TBD Intel Corporation * version 2.5.0 * See http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix * Server support for kernels: 2.6.32-358.18.1.el6 (RHEL6) * Client support for unpatched kernels: 2.6.32-358.18.1.el6 (RHEL6) 2.6.27.19-5 (SLES11) 2.6.18-348.3.1.el5 (RHEL5) 2.6.16.60-0.69.1 (SLES10) 3.6.10-2.fc17 (FC17) * Recommended e2fsprogs version: 1.42.7.wc1 * NFS export disabled when stack size < 8192 (32-bit Lustre clients), since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla 17630. * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on the re-exporting nodes to be mounted with "32bitapi" mount option -------------------------------------------------------------------------------- 05-30-2013 Intel Corporation * version 2.4.0 * See http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix * Server support for kernels: 2.6.32-358.6.1.el6 (RHEL6) * Client support for unpatched kernels: 2.6.32-358.6.1.el6 (RHEL6) 2.6.27.19-5 (SLES11) 2.6.18-348.3.1.el5 (RHEL5) 2.6.16.60-0.69.1 (SLES10) 3.6.10-2.fc17 (FC17) * Recommended e2fsprogs version: 1.42.7.wc1 * NFS export disabled when stack size < 8192 (32-bit Lustre clients), since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla 17630. * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on the re-exporting nodes to be mounted with "32bitapi" mount option -------------------------------------------------------------------------------- 9-30-2012 Whamcloud, Inc. * version 2.3.0 * See http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix * Server support for kernels: 2.6.32-279.5.1.el6 (RHEL6) * Client support for unpatched kernels: 2.6.32-279.5.1.el6 (RHEL6) 2.6.27.19-5 (SLES11) 2.6.18-238.19.1.el5 (RHEL5) 2.6.16.60-0.69.1 (SLES10) * Recommended e2fsprogs version: 1.41.90.wc4 * NFS export disabled when stack size < 8192 (32-bit Lustre clients), since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla 17630. * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on the re-exporting nodes to be mounted with "32bitapi" mount option Severity : enhancement Jira : LU-1754 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6. Severity : enhancement Jira : LU-1477 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6. Severity : enhancement Jira : LU-1424 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6 Severity : enhancement Jira : LU-1358 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6 Severity : enhancement Jira : LU-1241 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6 -------------------------------------------------------------------------------- 04-30-2012 Whamcloud, Inc. * version 2.2.0 * See http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix * Server support for kernels: 2.6.32-220.4.2.el6 (RHEL6) * Client support for unpatched kernels: 2.6.32-220.4.2.el6 (RHEL6) 2.6.27.19-5 (SLES11) 2.6.18-238.19.1.el5 (RHEL5) 2.6.16.60-0.69.1 (SLES10) * Recommended e2fsprogs version: 1.41.90.wc4 * NFS export disabled when stack size < 8192 (32-bit Lustre clients), since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla 17630. * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on the re-exporting nodes to be mounted with "32bitapi" mount option Severity : enhancement Jira : LU-1120 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6 Severity : enhancement Jira : LU-1054 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6 Severity : enhancement Jira : LU-751 Description: Update RHEL6.2 kernel to 2.6.32-220.el6 Severity : enhancement Jira : LU-624 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6 -------------------------------------------------------------------------------- 09-30-2011 Whamcloud, Inc. * version 2.1.0 * Server support for kernels: 2.6.18-238.19.1.el5 (RHEL5) 2.6.32-131.6.1.el6 (RHEL6) * Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.18-238.19.1.el5 (RHEL5) 2.6.32-131.6.1.el6 (RHEL6) 2.6.29.4-167.fc11 (FC11) 2.6.16.60-0.69.1 (SLES10) 2.6.27.19-5 (SLES11) * Recommended e2fsprogs version: 1.41.90.wc3 * NFS export disabled when stack size < 8192. Since the NFSv4 export of Lustre filesystem with 4K stack may cause a stack overflow. For more information, please refer to bugzilla 17630. * NFSv4 reexport requires Lustre client on the re-exporting nodes to be mounted with "32bitapi" mount option Severity : enhancement Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6 Severity : enhancement Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5 Severity : enhancement Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5 Severity : normal Frequency : only with SLES10 Bugzilla : 20744 Description: Use OFED "KMP" provided by Novell Details : SLES10 SP3 ships with OFED in a separate "KMP" package. Lustre is now built against this package. That means you need to install the ofed-kmp package from Novell for the patchless client. Note that the ofed-kmp that Novell ships may not exactly match the kernel version but should still be compatible. Severity : enhancement Bugzilla : 22514 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5. -------------------------------------------------------------------------------- 2010-07-15 Oracle, Inc. * version 2.0.0 * Server support for kernels: 2.6.18-164.11.1.el5 (RHEL 5) 2.6.18-164.11.1.0.1.el5 (OEL 5) * Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.18-164.11.1.el5 (RHEL 5), 2.6.18-164.11.1.0.1.el5 (OEL 5) 2.6.16.60-0.42.8 (SLES 10), 2.6.27.19-5 (SLES11) 2.6.29.4-167.fc11 (FC11) * Recommended e2fsprogs version: 1.41.10-sun2 Severity : enhancement Bugzilla : 22481 Description: Distribute lfs_migrate script with lustre Details : The lfs_migrate mentioned in the manual is now included in the lustre tree in lustre/scripts and will distributed in lustre RPMs. Severity : enhancement Bugzilla : 15253 Description: Failover nid list added to import proc file. Severity : enhancement Bugzilla : 22864 Description: "som_preview" mount option required to use SOM Details : The clients will need to use som_preview mount option in order to use SOM. Bugzilla : 22850 Description: Lustre does not do 1MB IOs to HW RAID Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel. Severity : enhancement Bugzilla : 22194 Description: lfs quota output is not very convenient for awk/sed-parsing Details : Some positions in lfs quota output table could be empty or non-empty which made it hard to parse it with scripts, now a dash is put instead of space where there is not supposed to be any data. Severity : normal Bugzilla : 22787 Description: Update to OFED 1.5.1 Details : OFED 1.5.1 will be used in environments that don't use vendor supplied OFED. Severity : normal Bugzilla : 22455 Description: Remove lnet. prefix from lctl params display Details : Also renamed lnet.memused to lnet_memused to avoid name conflict. Severity : normal Bugzilla : 15253 Description: Use conf_param -d to remove permanant settings. Severity : normal Bugzilla : 22455 Description: Add list_param -R Details : lctl list_param now supports recursive mode. Severity : normal Bugzilla : 21829, 22312 Description: Fix llobdstat. Details : 1. Now updating the write_bytes counter 2. Port script fixes from 1.8. Severity : normal Bugzilla : 20433 Description: decrease the usage of memory on clients. Details : 1. On clients, recycle dentries and inodes unused. 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It is useless now. Severity : normal Bugzilla : 21829 Description: llobdstat fix and enhancement Details : add a counter to set a limit to how many samples will be returned fix a wildcard in the path to limit to obdfilter stats only Severity : normal Bugzilla : 21259 Description: lfs check only allowed for root Details : Code cleanups and added a regresion test of non-root use of lfs check. Severity : normal Bugzilla : 21879 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add() Details : Fix hr->hr_index overload. Severity : normal Bugzilla : 19742 Description: Fix FIEMAP functionality. Severity : normal Bugzilla : 19808 Description: FC11 patchless client support added Severity : normal Bugzilla : 21632 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5. Severity : normal Bugzilla : 20057 Description: New acc-sm script and various test-framework enhancments. Severity : normal Bugzilla : 15962 Description: Previously landed patch was reverted. Severity : normal Bugzilla : 20758 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless) Severity : normal Bugzilla : 19673 Description: Add ldiskfs maxdirsize mount option. Severity : normal Bugzilla : 20301 Description: Fix mkfs.lustre support for 16TB LUNs. Severity : normal Bugzilla : 21564 Description: Print mmp_check_interval Details : print mmp_check_interval and make it possible to abort mount operation in case it takes too long. Severity : normal Bugzilla : 21547 Description: Add cascading_rw to lustre mpi tests. Severity : normal Bugzilla : 19964 Description: Store SOM data in EA. Details : Also several SOM related cleanups. Severity : normal Bugzilla : 20098 Description: Add refcount to md_open_data Severity : normal Bugzilla : 20607 Description: Use refcount on lov_request_set to prevent memory corruption. Severity : normal Bugzilla : 15692 Description: Statahead: use parent dir's i_mutex for synchronization. Severity : normal Bugzilla : 21571 Description: loadgen improvements. Severity : normal Bugzilla : 16186 Description: Enable peer health detection in ksocklnd and ko2iblnd. Severity : normal Bugzilla : 17545 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock Severity : normal Bugzilla : 21591 Description: Fix race on obd_devcie:md_stats Severity : normal Bugzilla : 21600 Description: Fix SLES 11 client builds. Details : Resolved uninitalized pointer gcc warnings. Severity : normal Bugzilla : 21259 Description: Allow non-root access for "lfs check". Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET. Severity : normal Bugzilla : 21513 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret() Severity : enhancement Bugzilla : 20773 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled). Severity : normal Bugzilla : 21049 Description: Sanity test_27p fails. Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs(). Sanity tests 27 were cleaned up and improved. Severity : normal$ Bugzilla : 18631 Description: Unify req format on client/servers Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC buffers and swabbers approach.. Severity : normal Frequency : cleanup Bugzilla : 19200 Description: drop join file stuff. Severity : enhancement Bugzilla : 14250 Description: Add 2.6.27 and SLES11 (patchless client) support Severity : normal Bugzilla : 20302 Description: Fix in ptlrpc_expire_one_request() to print the signed time difference. Severity : enhancement Bugzilla : 16312 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own kernel spec file. Severity : enhancement Bugzilla : 19662 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC Severity : enhancement Bugzilla : 19526 Description: correctly handle big reply message. Details : send LNet event if reply is bigger then buffer and adjust this buffer correctly. Severity : normal Bugzilla : 19917 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page() Severity : enhancement Bugzilla : 20539 Description: Add support for OEL5. Severity : normal Bugzilla : 20482 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic. Severity : enhancement Bugzilla : 21452 Description: "weak-modules" support Details : Implement "weak-modules" support which enables kernel modules to be used with any kernel that implements the same kABI. In order to achieve this modules are now installed in /lib/modules/$(uname -r)/updates/kernel on all distributions. Severity : normal Bugzilla : 18674 Description: client could not reconnect to OST because of an active request. Details : The client now retries to reconnect to the same server, if a connect request failed with EBUSY or -EAGAIN. Test case 35b conf-sanity.sh has been created. Severity : normal Bugzilla : 19557 Description: Don't allow make backward step on assignin osc next id. Details : race between allocation next id and ll_sync thread can be cause of set wrong osc next id and can be kill valid ost objects. Severity : normal Bugzilla : 20533 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly Severity : normal Bugzilla : 20533 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11 Severity : normal Bugzilla : 20482 Description: Error handling in osc_statfs_interpret() has been improved. Details : Check in osc_statfs_interpret() for EBADR. Severity : normal Bugzilla : 20482 Description: Do not send statfs() requests to OSTs disabled by administrator. Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp. Severity : enhancement Bugzilla : 20200 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid. Severity : enhancement Bugzilla : 20400 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5. Severity : enhancement Bugzilla : 20200 Description: Enhancement for lfs(1) command to use numeric uid/gid. Severity : normal Bugzilla : 14951 Description: Improved cleanup procedure for conf-sanity test_46a. Severity : normal Bugzilla : 18674 Description: Do not start bulk transfer, if client tried to reconnect. Details : Do not start bulk transfer, if client tried to reconnect, but failed due to active rpcs. Check for exp_abort_active_req has been implemented. Severity : normal Bugzilla : 19566 Description: Prevent inconsistences between linux and lustre mount structures. Details : Wait indefinitely in server_wait_finished() until mnt_count drops. Make the sleep interruptible. Severity : enhancement Bugzilla : 19955 Description: provide server to client comms path Details : server to client communications path via new LDLM_SET_INFO rpc Severity : normal Bugzilla : 20008 Description: truncate starts GFP_FS allocation under transaction causing deadlock Details : ldiskfs_truncate calls grab_cache_page which may start page allocation under an open transaction. This may lead to calling prune_icache with consequent lustre reentrance. Severity : normal Bugzilla : 19934 Description: send correctly lsm on open replay Details : MDS is trust to LSM size on replay open, but client can set wrong size to lsm buffer. Severity : normal Bugzilla : 19854 Description: enable client interface failover Details : When a child reconnects from another NID, properly update export nid hash position and ldlm reverse import. Severity : enhancement Bugzilla : 18539 Description: Communicate OST degraded/readonly state via statfs to MDS Details : Flags in the statfs returned from OSTs indicate whether the OST is in a degraded RAID state, or if the filesystem has turned read-only after a filesystem error is detected. Severity : normal Bugzilla : 20122 Frequency : rare Description: don't panic if EPROTO was hit when reading symlink Details : correctly handling request reference in error cases. Severity : enhancement Bugzilla : 19856 Description: Add LustreNetLink, a kernel-userspace communcation path. Severity : enhancement Bugzilla : 19847 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3. Severity : normal Frequency : rare Bugzilla : 18800 Description: access to llog context before init. Details : move handling CATALOGS file at osc layer and forbid access to llog context before init. Severity : normal Frequency : rare, only when client is writing to OST on local node Bugzilla : 19529 Description: Avoid deadlock for local client writes Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the memory freeing context. This allows OST threads to set the PF_MEMALLOC flag on task structures in order to allocate memory from reserved pools and complete IO. Use GFP_HIGHUSER for OST allocations for non-local client writes, so that the OST threads generate memory pressure and allow inactive pages to be reclaimed. Severity : enhancement Bugzilla : 19846 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5. Severity : normal Frequency : rare Bugzilla : 18380 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock Details : move ldlm namespace creation in setup phase to avoid grab _lprocfs_lock with cli_sem held. Severity : normal Bugzilla : 19507 Description: Temporarily disable grant shrink. Details : Disable the feature for debugging. Severity : normal Frequency : only when formatting test filesystems Bugzilla : 18624 Description: Unable to run several mkfs.lustre on loop devices at the same time Details : mkfs.lustre returns error 256 on the concurrent loop devices formatting. The solution is to proper handle the error. Severity : enhancement Bugzilla : 19024 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5. Severity : enhancement Bugzilla : 19212 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37. Severity : normal Frequency : rare Bugzilla : 19528 Description: resolve race between obd_disconnect and class_disconnect_exports Details : if obd_disconnect will be called to already disconnected export he forget release one reference and osc module can't unloaded. Severity : enhancement Bugzilla : 18688 Description: Allow tuning service thread via /proc Details : For each service a new /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is created that can be used to set min/max thread counts, and get the current number of running threads. Severity : normal Frequency : rare Bugzilla : 18382 Descriptoin: don't return error if have partially created objects for file. Details : lov_update_create_set uses set->set_success as index for created objects, so if some requests will be failed, they will have hole at end of array and qos_shrink_lsm for allocate correct lsm. Severity : enhancement Bugzilla : 17671 Description: Update OFED support to 1.4.1 Severity : normal Frequency : common Bugzilla : 18645 Description: Reduce small size read RPC Details : Set read-ahead limit for every file and only do read-ahead when available read-ahead pages are bigger than 1M to avoid small size read RPC. Severity : enhancement Bugzilla : 19293 Description: move AT tunable parameters for more consistent usage Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing Severity : enhancement Bugzilla : 17974 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs Details : allow skip disconnected ost for send statfs request and hide error in this case. Severity : major Frequency : rare Bugzilla : 18810 Description: fix racy locking of mballoc block bitmaps causing BUG Details : The locking of the mballoc buddy bitmap and the in-memory block bitmap was using two different spin locks in some cases. This made it possible to incorrectly access the mballoc bitmap while another process was modifying it, causing a sanity assertion to fail. While no on-disk corruption was reported, there was some risk of this happening. Severity : normal Frequency : rare, on llog test 6 Bugzilla : 16839 Descriptoin: don't allow connect to already connected import Details : allowing connect to already connected import is hide connecting problem. Severity : normal Frequency : rare Bugzilla : 18902 Descriptoin: allow kill process which wait statahead result Details : for some reasons 'ls' can stick in waiting result from statahead, in this case need way for kill this process. Severity : enhancement Bugzilla : 18798 Description: Add state history info file, enhance import info file Details : Track import connection state changes in a new osc/mdc proc file; add overview-type data to the osc/mdc import proc file. Severity : enhancement Bugzilla : 17536 Description: MDS create should not wait for statfs RPC while holding DLM lock. Severity : enhancement Bugzilla : 18289 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5. Severity : normal Frequency : normal Bugzilla : 12069 Descriptoin: OST grant too much space to client even there are not enough space. Details : Client will shrink its grant cache to OST if there are no write activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve this grant cache if there are already not enough avaible space (left_space < total_clients * 32M). Severity : normal Frequency : start MDS on uncleanly shutdowned MDS device Bugzilla : 16839 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished Details : stay in waiting mds<>ost recovery finished produce random bugs due race between two ll_sync thread for one lov target. send ACTIVATE event only if connect realy finished and import have FULL state. Severity : normal Frequency : rare, connect and disconnect target at same time Bugzilla : 17310 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0 Details : don't call obd_disconnect under lov_lock. this long time operation and can block ptlrpcd which answer to connect request. Severity : normal Frequency : rare Bugzilla : 18154 Descriptoin: don't lose wakeup for imp_recovery_waitq Details : recover_import_no_retry or invalidate_import and import_close can both sleep on imp_recovery_waitq, but we was send only one wakeup to sleep queue. Severity : normal Frequency : always with long access acl Bugzilla : 17636 Descriptoin: mds can't pack reply with long acl. Details : mds don't control size of acl but they limited by reint/getattr reply buffer. Severity : enhancement Bugzilla : 18061 Description: Update to SLES10 kernel-2.6.16.60-0.33. Severity : enhancement Bugzilla : 18060 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5. Severity : normal Frequency : start MDS on uncleanly shutdowned MDS device Bugzilla : 18049 Descriptoin: aborting recovery hang on MDS Details : don't throttle destroy RPCs for the MDT. Severity : major Frequency : on remount Bugzilla : 18018 Description: external journal device not working after the remount Details : clear dev_rdonly flag for external journal devices in blkdev_put() Severity : minor Frequency : rare Bugzilla : 17802 Description: shutdown vs evict race Details : client_disconnect_export vs connect request race. if client will evicted at this time - we start invalidate thread without referece to import and import can be freed at same time. Severity : normal Frequency : rare, need acl's on inode. Bugzilla : 16492 Description: client can't handle ost additional correctly Details : if ost was added after client connected to mds client can have hit lnet_try_match_md ... to big messages to wide striped files. in this case need teach client to handle config events about add lov target and update client max ea size at that event. Severity : enhancement Bugzilla : 15699 Description: Changelogs Details : Changelogs are a lightweight mechanism to track filesystem metadata and namespace changes. The changelog is recorded permanently on the MDTs, and is periodically "consumed" / purged when records are no longer needed. Severity : enhancement Bugzilla : 15957 Description: compact fld format with extents Details : Store range of seq rather than every seq in FLD. Seq controller update FLD rather than clients. In Case of CMD, mdt0 has FLD, all other metadata server act as non persistent proxy for FLD queries and cache fld entries in fld cache. Severity : normal Frequency : rare Bugzilla : 16081 Description: don't skip ost target if they assigned to file Details : Drop slow OSCs if we can, but not for requested start idx. This means "if OSC is slow and it is not the requested start OST, then it can be skipped, otherwise skip it only if it is inactive/recovering/out-of-space. Severity : normal Bugzilla : 16080 Description: more cleanup in mds_lov Details : not send LOV EA under replay, we can't know about they size at this time. Don't allow client connect to mds before any ost connected, for avoid problems with LOV EA size and returning EIO to client. Severity : enhancement Bugzilla : 11826 Description: Interoperability at server side (Disk interoperability) Severity : enhancement Bugzilla : 17201 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5. Severity : enhancement Bugzilla : 17458 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31. Severity : enhancement Bugzilla : 14166 Description: New client IO stack (CLIO). Severity : enhancement Bugzilla : 15393 Description: Commit on sharing. Eliminate inter-client dependencies between uncommitted transactions by doing transaction commits. Thereby clients may recovery independently. Severity : normal Frequency : Create a symlink file with a very long name Bugzilla : 16578 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count) Details : If there is no extra space in the request for early cancels, ldlm_req_handles_avail() returns 0 instead of a negative value. Severity : enhancement Bugzilla : 1819 Description: Add /proc entry for import status Details : The mdc, osc, and mgc import directories now have an import directory that contains useful import data for debugging connection problems. Severity : enhancement Bugzilla : 15966 Description: Re-disable certain /proc logging Details : Enable and disable client's offset_stats, extents_stats and extents_stats_per_process stats logging on the fly. Severity : major Frequency : Only on FC kernels 2.6.22+ Bugzilla : 16303 Description: oops in statahead Details : Do not drop reference count for the dentry from VFS when lookup, VFS will do that by itself. Severity : enhancement Bugzilla : 16643 Description: Generic /proc file permissions Details : Set /Proc file permissions in a more generic way to enable non- root users operate on some /proc files. Severity : major Bugzilla : 16561 Description: Hitting mdc_commit_close() ASSERTION Details : Properly handle request reference release in ll_release_openhandle(). Severity : major Bugzilla : 14840 Description: quota recovery deadlock during mds failover Details : This patch includes att18982, att18236, att18237 in bz14840. Slove the problems: 1. fix osts hang when mds does failover with quotaon 2. prevent watchdog storm when osts threads wait for the recovery of mds Severity : normal Bugzilla : 15975 Frequency : only patchless client Description: add workaround for race between add/remove dentry from hash Severity : enhancement Bugzilla : 16845 Description: Allow OST glimpses to return PW locks Severity : minor Bugzilla : 16717 Description: LBUG when llog conf file is full Details : When llog bitmap is full, ENOSPC should be returned for plain log. Severity : normal Bugzilla : 16907 Description: Prevent import from entering FULL state when server in recovery Severity : major Bugzilla : 16750 Description: service mount cannot take device name with ":" Details : Only when device name contains ":/" will mount treat it as client mount. Severity : normal Bugzilla : 15927 Frequency : rare Description: replace ptlrpcd with the statahead thread to interpret the async statahead RPC callback Severity : normal Bugzilla : 16611 Frequency : on recovery Description: I/O failures after umount during fail back Details : if client reconnected to restarted server we need join to recovery instead of find server handler is changed and process self eviction with cancel all locks. Severity : enhancement Bugzilla : 16633 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5. Severity : enhancement Bugzilla : 16547 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27. Severity : enhancement Bugzilla : 16566 Description: Upcall on Lustre log has been dumped Details : Allow for a user mode script to be called once a Lustre log has been dumped. It passes the filename of the dumped log to the script, the location of the script can be specified via /proc/sys/lnet/debug_log_upcall. Severity : minor Bugzilla : 16583 Frequency : rare Description: avoid idr_remove called for id which is not allocated. Details : Move assigment s_dev for clustered nfs to end of initialization, to avoid problem with error handling. Severity : minor Bugzilla : 16109 Frequency : rare Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages Details : When connection is reused this not moved from CONN_UNUSED_HASH into CONN_USED_HASH and this prodice warning when put connection again in unused hash. Severity : enhancement Bugzilla : 15899 Description: File striping can now be set to use an arbitrary pool of OSTs. Severity : enhancement Bugzilla : 16573 Description: Export bytes_read/bytes_write count on OSC/OST. Severity : normal Bugzilla : 16237 Description: Early reply size mismatch, MGC loses connection Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so the connect flags are properly negotiated. Severity : normal Frequency : often Bugzilla : 16125 Description: quotas are not honored with O_DIRECT Details : all writes with the flag O_DIRECT will use grants which leads to this problem. Now using OBD_BRW_SYNC to guard this. Severity : normal Bugzilla : 15058 Description: add quota statistics Details : 1. sort out quota proc entries and proc code. 2. add quota statistics Severity : enhancement Bugzilla : 13058 Description: enable quota support for HEAD. Severity : normal Bugzilla : 16006 Description: Properly propagate oinfo flags from lov to osc for statfs Details : restore missing copy oi_flags to lov requests. Severity : enhancement Bugzilla : 16581 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8), : l_getgroups(8), lst(8), routerstat(8) Details : included man pages for llobdstat(8), llstat(8), : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8) Severity : enhancement Bugzilla : 16091 Description: configure's --enable-quota should check the : kernel .config for CONFIG_QUOTA Details : configure is terminated if --enable-quota is passed but : no quota support is in kernel Severity : normal Bugzilla : 13139 Description: Remove portals compatibility Details : Remove portals compatibility, not interoperable with releases before 1.4.6 Severity : normal Bugzilla : 15576 Description: Resolve device initialization race Details : Prevent proc handler from accessing devices added to the obd_devs array but yet be intialized. Severity : enhancement Bugzilla : 15308 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23. Severity : enhancement Bugzilla : 16190 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5. Severity : normal Bugzilla : 12975 Frequency : rare Description: Using wrong pointer in osc_brw_prep_request Details : Access to array[-1] can produce panic if kernel compiled with CONFIG_PAGE_ALLOC enabled Severity : normal Bugzilla : 16037 Description: Client runs out of low memory Details : Consider only lowmem when counting initial number of llap pages Severity : normal Bugzilla : 15625 Description: *optional* service tags registration Details : if the "service tags" package is installed on a Lustre node When the filesystem is mounted, a local-node service tag will be created. See http://inventory.sun.com/ for more information about the Service Tags asset management system. Severity : normal Bugzilla : 15825 Description: Kernel BUG tries to release flock Details : Lustre does not destroy flock lock before last reference goes away. So always drop flock locks when client is evicted and perform unlock regardless of successfulness of speaking to MDS. Severity : normal Bugzilla : 15210 Description: add refcount protection for osc callbacks, avoid panic on shutdown Severity : normal Bugzilla : 12653 Description: sanity test 65a fails if stripecount of -1 is set Details : handle -1 striping on filesystem in ll_dirstripe_verify Severity : normal Bugzilla : 14742 Frequency : rare Description: ASSERTION(CheckWriteback(page,cmd)) failed Details : badly clear PG_Writeback bit in ll_ap_completion can produce false positive assertion. Severity : enhancement Bugzilla : 15865 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5. Severity : major Bugzilla : 15924 Description: do not process already freed flock Details : flock can possibly be freed by another thread before it reaches to ldlm_flock_completion_ast. Severity : normal Bugzilla : 14480 Description: LBUG during stress test Details : Need properly lock accesses the flock deadlock detection list. Severity : minor Bugzilla : 15837 Description: oops in page fault handler Details : kernel page fault handler can return two special 'pages' in error case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM. Severity : minor Bugzilla : 15716 Description: timeout with invalidate import. Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which should be handled by ptlrpcd. This produce long age waiting and -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT. Severity : enhancement Bugzilla : 15741 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5. Severity : major Bugzilla : 14134 Description: enable MGS and MDT services start separately Details : add a 'nomgs' option in mount.lustre to enable start a MDT with a co-located MGS without starting the MGS, which is a complement to 'nosvc' mount option. Severity : normal Bugzilla : 14835 Frequency : after recovery Description: precreate to many object's after del orphan. Details : del orphan st in oscc last_id == next_id and this triger growing count of precreated objects. Set flag LOW to skip increase count of precreated objects. Severity : normal Bugzilla : 15139 Frequency : rare, on clear nid stats Description: ASSERTION(client_stat->nid_exp_ref_count == 0) Details : when clean nid stats sometimes try destroy live entry, and this produce panic in free. Severity : major Bugzilla : 15575 Description: Stack overflow during MDS log replay ease stack pressure by using a thread dealing llog_process. Severity : normal Bugzilla : 15443 Description: wait until IO finished before start new when do lock cancel. Details : VM protocol want old IO finished before start new, in this case need wait until PG_writeback is cleared until check dirty flag and call writepages in lock cancel callback. Severity : enhancement Bugzilla : 14929 Description: using special macro for print time and cleanup in includes. Severity : normal Bugzilla : 12888 Description: mds_mfd_close() ASSERTION(rc == 0) Details : In mds_mfd_close(), we need protect inode's writecount change within its orphan write semaphore to prevent possible races. Severity : minor Bugzilla : 14929 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead. Severity : minor Bugzilla : 14645 Frequency : rare, on shutdown ost Description: don't hit live lock with umount ost. Details : shrink_dcache_parent can be in long loop with destroy dentries, use shrink_dcache_sb instead. Severity : minor Bugzilla : 14949 Description: don't panic with use echo client Details : echo client pass NULL as client nid pointer and this produce null pointer dereference. Severity : normal Bugzilla : 15278 Description: fix build on ppc32 Details : compile code with -m64 flag produce wrong object file for ppc32. Severity : normal Bugzilla : 12191 Description: add message levels for liblustreapi Severity : normal Bugzilla : 13380 Description: fix for occasional failure case of -ENOSPC in recovery-small tests Details : Move the 'good_osts' check before the 'total_bavail' check. This will result in an -EAGAIN and in the exit call path we call alloc_rr() which will with increasing aggressiveness attempt to aquire precreated objects on the minimum number of required OSCs. Severity : major Bugzilla : 14326 Description: Use old size assignment to avoid deadlock Details : Reverts the changes in bugs 2369 and bug 14138 that introduced the scheduling while holding a spinlock. We do not need locking for size in ll_update_inode() because size is only updated from the MDS for directories or files without objects, so there is no other place to do the update, and concurrent access to such inodes are protected by the inode lock. Severity : normal Bugzilla : 14746 Description: resolve "_IOWR redefined" build error on SLES10 Severity : normal Bugzilla : 14763 Description: dump the memory debugging after all modules are unloaded to suppress false negative in conf_sanity test 39 Severity : enhancement Bugzilla : 15316 Description: build kernel-ib packages for OFED 1.3 in our release cycle Severity : minor Bugzilla : 13969 Frequency : always Description: fix SLES kernel versioning Details : the kernel version for our SLES 10 kernel did not include a "-" before the "smp" at the end. while this was not a problem in general, it did mean that software trying to use the kernel version to try to detect a vendor specific kernel would fail. this was most evident by the OFED build scripts. Severity : normal Bugzilla : 14803 Description: Don't update lov_desc members until making sure they are valid Details : When updating lov_desc members via proc fs, need fix their validities before doing the real update. Severity : normal Bugzilla : 15069 Description: don't put request into delay list while invalidate in flight. Details : ptlrpc_delay_request sometimes put in delay list while invalidate import in flight. this produce timeout for invalidate and sometimes can cause stale data. Severity : minor Bugzilla : 14856 Frequency : on ppc only Description: not convert ost objects for directory because it's not exist. Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong. Severity : normal Bugzilla : 12652 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel. Severity : enhancement Bugzilla : 13397 Description: Update to support 2.6.22.14 vanilla kernel. Severity : normal Bugzilla : 14533 Frequency : rare, on recovery Description: read procfs can produce deadlock in some situation Details : Holding lprocfs lock which send rpc can produce block for destroy obd objects and this also block reconnect with -EALREADY. This isn't fix all lprocfs bugs - but make it rare. Severity : enhancement Bugzilla : 15152 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5. Severity : major Frequency : frequent on X2 node Bugzilla : 15010 Description: mdc_set_open_replay_data LBUG Details : Set replay data for requests that are eligible for replay. Severity : normal Bugzilla : 14321 Description: lustre_mgs: operation 101 on unconnected MGS Details : When MGC is disconnected from MGS long enough, MGS will evict the MGC, and late on MGC cannot successfully connect to MGS and a lot of the error messages complaining that MGS is not connected. Severity : major Bugzilla : 15027 Frequency : on network error Description: panic with double free request if network error Details : mdc_finish_enqueue is finish request if any network error ocuring, but it's true only for synchronus enqueue, for async enqueue (via ptlrpcd) this incorrect and ptlrpcd want finish request himself. Severity : enhancement Bugzilla : 11401 Description: client-side metadata stat-ahead during readdir(directory readahead) Details : perform client-side metadata stat-ahead when the client detects readdir and sequential stat of dir entries therein Severity : major Frequency : on start mds Bugzilla : 14884 Description: Implement get_info(last_id) in obdfilter. Severity : normal Frequency : occasional Bugzilla : 13537 Description: Correctly check stale fid, not start epoch if ost not support SOM Details : open with flag O_CREATE need set old fid in op_fid3 because op_fid2 was overwritten with new generated fid, but mds can answer with one of these two fids and both is not stale. Setattr incorrectly started an epoch and assume will be called done_writing, but without SOM done_writing ever being called. Severity : major Frequency : rare, depends on device drivers and load Bugzilla : 14529 Description: MDS or OSS nodes crash due to stack overflow Details : Code changes in 1.8.0 increased the stack usage of some functions. In some cases, in conjunction with device drivers that use a lot of stack the MDS (or possibly OSS) service threads could overflow the stack. One change which was identified to consume additional stack has been reworked to avoid the extra stack usage. Severity : normal Frequency : occasional Bugzilla : 13730 Description: Do not fail import if osc_interpret_create gets -EAGAIN Details : If osc_interpret_create got -EAGAIN it immediately exits and wakeup oscc_waitq. After wakeup oscc_wait_for_objects call oscc_has_objects and see OSC has no objests and call oscc_internal_create to resend create request. Severity : enhancement Bugzilla : 14858 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5. Severity : enhancement Bugzilla : 14876 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5. Severity : normal Frequency : very rare Bugzilla : 3462 Description: Fix replay if there is an un-replied request and open Details : In some cases, older replay request will revert the mcd->mcd_last_xid on MDS which is used to record the client's latest sent request. Severity : enhancement Bugzilla : 14720 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5. Severity : enhancement Bugzilla : 14482 Description: Add rhel5 support to HEAD. Serverity : enhancement Bugzilla : 14793 Description: Update RHEL4 kernel to 2.6.9-67.0.4. Severity : minor Frequency : rare Bugzilla : 13196 Description: Don't allow skipping OSTs if index has been specified. Details : Don't allow skipping OSTs if index has been specified, make locking in internal create lots better. Severity : normal Bugzilla : 12228 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00 Details : access to bitfield in structure is always rounded to long and this produce problem with not atomic change any bit. Severity : normal Bugzilla : 13647 Description: Lustre make rpms failed. Details : Remove ldiskfs spec file to avoids rpmbuild be confused when builds Lustre rpms from tarball. Severity : normal Frequency : rare on shutdown ost Bugzilla : 14608 Description: If llog cancel was not send before clean_exports phase, this can produce deadlock in llog code. Details : If llog thread has last reference to obd and call class_import_put this produce deadlock because llog_cleanup_commit_master wait when last llog_commit_thread exited, but this never success because was called from llog_commit_thread. Severity : normal Bugzilla : 9977 Description: allow userland application know is lost one of stripes. Details : fill lvb_blocks with error code on ost and return it to application if error flag found. Severity : normal Bugzilla : 14607 Description: NULL lov_tgts causing MDS oops Details : more safe checks for NULL lov_tgts for avoid oops. Severity : enhancement Bugzilla : 14531 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL. Severity : normal Bugzilla : 13375 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset() Details : If an OST is down the MDS will hang indefinitely in obd_statfs_rqset() waiting for the statfs data. While for MDS QOS usage of statfs, it should not stuck in waiting. Severity : enhancement Bugzilla : 11842 Description: remote_acl support Details : Support ACL-based permission check for remote user. Support setfacl/getfacl for remote user with the utils "lfs {l,r}{s,g}etfacl" which follow the same parameter format as the system "{s,g}etfacl" utils. Severity : enhancement Bugzilla : 14288 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL. Severity : enhancement Bugzilla : 14368 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5. Severity : normal Bugzilla : 14136 Description: make mgs_setparam() handle fsname containing dash Details : fsname containing a dash does not work with lctl conf_param Severity : enhancement Bugzilla : 14388 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3. Severity : enhancement Bugzilla : 14289 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5. Severity : major Bugzilla : 14260 Frequency : rare, at shutdown Description: access already free / zero obd_namespace. Details : if client_disconnect_export was called without force flag set, and exist connect request in flight, this can produce access to NULL pointer (or already free pointer) when connect_interpret store ocd flags in obd_namespace. Severity : minor Bugzilla : 14418 Frequency : only at startup Description: not alloc memory with spinlock held. Details : allocation memory with GFP_KERNEL can produce sleep deadlock, if any spinlock held. Severity : enhancement Bugzilla : 12211 Description: make lustre randomly fail allocating memory Details : Make lustre randomly failed allocating memory for testing purpose. Severity : enhancement Bugzilla : 12702 Description: lost problems with lov objid file Details : Fixes some scability and access to not inited memory problems in work with lov objdid file. Severity : major Frequency : always Bugzilla : 14270 Description: lfs find does not continue on file error Details : Continue other files processing when a file/dir is absent. Severity : normal Bugzilla : 11791 Description: Inconsistent usage of lustre_pack_reply() Details : Standardize the usage of lustre_pack_reply() such that it always generate a CERROR on failure. Severity : major Frequency : occasional Bugzilla : 13917 Description: MDS hang or stay in waiting lock Details : If client receive lock with CBPENDING flag ldlm need send lock cancel as separate rpc, to avoid situation when cancel request can't processed due all i/o threads stay in wait lock. Severity : normal Bugzilla : 13969 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5. Severity : normal Bugzilla : 13874 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16 Severity : normal Bugzilla : 13889 Description: Update to SLES9 kernel-2.6.5-7.287.3. Severity : normal Bugzilla : 14041 Description: Update to RHEL4 latest kernel. Severity : enhancement Bugzilla : 13690 Description: Build SLES10 patchless client fails Details : The configure was broken by run ./configure with --with-linux-obj=.... argument for patchless client. When the configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude can't search header adequately. Use absolute path such as -I($LINUX)/include instead. Severity : normal Bugzilla : 13888 Description: interrupt oig_wait produce painc on resend. Details : brw_redo_request can be used for resend requests from ptlrpcd and private set, and this produce situation when rq_ptlrpcd_data not copyed to new allocated request and triggered LBUG on assert req->rq_ptlrpcd_data != NULL. But this member used only for wakeup ptlrpcd set if request is changed and can be safety changed to use rq_set directly. Severity : normal Bugzilla : 13497 Description: LASSERT_{REQ,REP}SWAB macros are buggy Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop these macros and replace them with their difinitions instead. Severity : normal Bugzilla : 13521 Description: Update kernel patches for SLES10 2.6.16.53-0.8. Details : Update which_patch & target file for SLES10 latest kernel. Bugzilla : 12411 Description: Remove client patches from SLES 10 kernel. Details : This causes SLES 10 clients to behave as patchless clients even on a Lustre-patched (server) kernel. Severity : enhancement Bugzilla : 2262 Description: self-adjustable client's lru lists Details : use adaptive algorithm for managing client cached locks lru lists according to current server load, other client's work pattern, memory activities, etc. Both, server and client side namespaces provide number of proc tunables for controlling things Severity : enhancement Bugzilla : 13641 Description: light-weight GSS support Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication and reduce performance overhead. Severity : enhancement Bugzilla : 11832 Description: Linux keyring support Details : Support using service of Linux keyring for Lustre GSS internal context refresh/cache mechanism. Severity : normal Bugzilla : 12186 Description: Fix errors in lfs documentation Details : Fixes man pages Severity : normal Bugzilla : 12606 Description: don't use GFP_* in generic Lustre code. Details : Use cfs_alloc_* functions and CFS_* flags for code portability. Severity : normal Bugzilla : 12333 Description: obdclass is limited by single OBD_ALLOC(idarray) Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE Severity : normal Bugzilla : 13006 Description: warnings with build patchless client with vanila 2.6.19 and up Details : change old ctl_table style and replace ctl_table/ctl_table_header with cfs_sysctl_table_t/cfs_sysctl_table_header_t Severity : normal Bugzilla : 13177 Frequency : Only for SLES Description: sanity_quota fail test_1 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group file, which makes TSTID[2] inunique. Severity : normal Bugzilla : 13249 Frequency : Only for SLES9 Description: Kernel patches for SLES9 2.6.5-7.286 kernel Details : Update target/ChangeLog/which_patch . Severity : normal Bugzilla : 13170 Frequency : Only for test_10 in sanity-quota.sh Description: a bug in quota test code Details : checking a test flag in a wrong place Severity : normal Bugzilla : 13171 Frequency : Only for test_13 in sanity-quota.sh Description: a bug in quota test script Details : shouldn't check overfull allocated quota Severity : normal Bugzilla : 12955 Description: jbd statistics Details : Port older jbd statistics patch for sles10 Severity : enhancement Bugzilla : 11721 Description: Add printing inode info into message about error in writepage. Severity : normal Bugzilla : 11974 Frequency : Rare Description: reply_lock_interpret crash due to race with it and lock cancel. Details : Do not replay locks that are being cancelled. Do not reference locks by their address during replay, just by their handle. Severity : normal Bugzilla : 13103 Frequency : When flocks are used. Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock. Details : Flock locks might destroy just granted lock if it could be merged with another existing flock, this is done in completion handler, so teach ldlm_cli_enquque_fini that this is a valid case for flock locks. Severity : minor Bugzilla : 13276 Frequency : rare Description: Oops in read and write path when failing to allocate lock. Details : Check if lock allocation failed and return error back. Severity : normal Bugzilla : 11679 Description: lstripe command fails for valid OST index Details : The stripe offset is compared to lov->desc.ld_tgt_count instead of lov->desc.ld_active_tgt_count. Severity : normal Bugzilla : 12584 Description: sanity.sh failed test 103 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl with param "-X". Severity : normal Bugzilla : 12743 Description: df doesn't work properly if diskfs blocksize != 4K Details : Choose biggest blocksize of OST's as the LOV's blocksize. Severity : normal Bugzilla : 12836 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common() Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count. Severity : enhancement Bugzilla : 3055 Description: Adaptive timeouts Details : RPC timeouts adapt to changing server load and network conditions to reduce resend attempts and improve recovery time. Severity : normal Bugzilla : 12192 Description: llapi_file_create() does not allow some changes Details : add llapi_file_open() that allows specifying the mode and open flags, and also returns an open file handle. Severity : normal Bugzilla : 11248 Description: merge and cleanup kernel patches. Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch. Severity : normal Bugzilla : 10657 Description: Add journal checksum support.(Kernel part) Details : The journal checksum feature adds two new flags i.e JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag indicates that the commit block contains the checksum for the blocks described by the descriptor blocks. Now commit record can be sent to disk without waiting for descriptor blocks to be written to disk. This behavior is controlled using JBD2_FEATURE_ASYNC_COMMIT flag. Severity : minor Bugzilla : 12446 Description: OSS needs mutliple precreate threads Details : Add ability to start more than one create thread per OSS. Severity : normal Bugzilla : 13362 Description: Sanity.sh test_65k failed: setstripe should have succeeded Details : execute lfs setstripe on client Severity : major Bugzilla : 12223 Description: mds_obd_create error creating tmp object Details : When the user sets quota on root, llog will be affected and can't create files and write files. Severity : normal Frequency : Always on ia64 patchless client, and possibly others. Bugzilla : 12826 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol. Details : This allows the patchless client to be loaded on architectures without this export. Severity : normal Bugzilla : 13039 Description: RedHat Update kernel for RHEL5 Details : Add the kernel config file for RHEL5. Severity : normal Bugzilla : 13039 Description: RedHat Update kernel for RHEL5 Details : Modify the kernel config file more closer RHEL5. Severity : normal Bugzilla : 13360 Description: Build failure against Centos5 (RHEL5) Details : Define PAGE_SIZE when it isn't present. Severity : minor Bugzilla : 13363 Description: test_7 on sanity-quota.sh can't be used on separate machines Details : add facet to handle it Severity : normal Bugzilla : 13030 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs Details : with NFS, the anon dentry's parent was set to itself in d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the corresponding dentry other than use rec->ur_name. Severity : enhancement Bugzilla : 12786 Description: lfs setstripe enhancement Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size. Severity : normal Bugzilla : 12398 Description: enable data checksumming by default Details : enable checksum by default, allow --disable-checksum configure option and "-o nochecksum" mount option. Checksums can also be disabled at runtime via $LPROC/osc/*/checksum_pages. Severity : normal Bugzilla : 11802 Description: lustre support for RHEL5 Details : Add support for RHEL5. Severity : normal Bugzilla : 12459 Description: Client eviction due to failover config Details : after a connection loss, the lustre client should attempt to reconnect to the last active server first before trying the other potential connections. Severity : minor Bugzilla : 12588 Description: when mds and osts use different quota unit(32bit and 64bit), quota will be released repeatly. Details : void sending multiple quota reqs to mds, which will keep the status between the reqs. Severity : normal Bugzilla : 13125 Description: osts not allocated evenly to files Details : change the condition to increase offset_idx Severity : critical Frequency : Always for filesystems larger than 2TB on 32-bit systems. Bugzilla : 13547 Description: Data corruption for OSTs that are formatted larger than 2TB on 32-bit servers. Details : When generating the bio request for lustre file writes the sector number would overflow a temporary variable before being used for the IO. The data reads correctly from Lustre (which will overflow in a similar manner) but other file data or filesystem metadata may be corrupted in some cases. Severity : normal Bugzilla : 11230 Description: Tune the kernel for good SCSI performance. Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb to the value of /sys/block/{dev}/queue/max_hw_sectors_kb in mount_lustre. Severity : cleanup Bugzilla : 13532 Description: rewrite ext2-derived code in obdclass/uuid.c Details : rewrite inherited code (uuid parsing code from ext2 utils) from scratch preserving functionality. Severity : normal Bugzilla : 13600 Description: "lfs find -obd UUID" prints directories Details : "lfs find -obd UUID" will return all directory names instead of just file names. It is incorrect because the directories do not reside on the OSTs. Severity : minor Bugzilla : 2369 Description: use i_size_read and i_size_write in 2.6 port Details : replace inode->i_size access with i_size_read/write() Severity : normal Frequency : when removing large files Bugzilla : 13181 Description: scheduling issue during removal of large Lustre files Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels. It causes scheduling issues when removing large files (17TB in the present case). Severity : normal Frequency : only with liblustre clients on XT3 Bugzilla : 12418 Description: evictions taking too long Details : allow llrd to evict clients directly on OSTs Severity : normal Frequency : only on ppc Bugzilla : 12234 Description: /proc/fs/lustre/devices broken on ppc Details : The patch as applied to 1.6.2 doesn't look correct for all arches. We should make sure the type of 'index' is loff_t and then cast explicitly as needed below. Do not assign an explicitly cast loff_t to an int. Severity : normal Frequency : only for rhel5 Bugzilla : 13616 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5. Details : Modify the target file & which_kernel. Severity : enhancement Bugzilla : 10786 Description: omit set fsid for export NFS Details : fix set/restore device id for avoid EMFILE error and mark lustre fs as FS_REQUIRES_DEV for avoid problems with generate fsid. Severity : normal Bugzilla : 13304 Frequency : Always, for kernels after 2.6.16 Description: Fix warning idr_remove called for id=.. which is not allocated. Details : Last kernels save old s_dev before kill super and not allow to restore from callback - restore it before call kill_anon_super. Severity : minor Bugzilla : 12948 Description: buffer overruns could theoretically occur Details : llapi_semantic_traverse() modifies the "path" argument by appending values to the end of the origin string, and a overrun may occur. Adding buffer overrun check in liblustreapi. Severity : normal Bugzilla : 13334 Description: Fix error on 'ls .' at the top of the Lustre mount. Details : Don't revalidate dentry if it is a root dentry. Severity : normal Bugzilla : 13518 Description: Kernel patches update for RHEL4 2.6.9-55.0.6. Details : Modify vm-tunables-rhel4.patch. Severity : normal Bugzilla : 13452 Description: Kernel config for 2.6.18-vanilla. Details : Modify targets/2.6-vanilla.target.in. Add config file kernel-2.6.18-2.6-vanilla-i686.config. Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64.config. Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config. Severity : major Bugzilla : 11710 Description: improve handling recoverable errors Details : if request processig with error which can be recoverable on server request should be resend, otherwise page released from cache and marked as error. Severity : critical Bugzilla : 13751 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5. Details : Modify target file & which_patch. A flaw was found in the IA32 system call emulation provided on AMD64 and Intel 64 platforms. An improperly validated 64-bit value could be stored in the %RAX register, which could trigger an out-of-bounds system call table access. An untrusted local user could exploit this flaw to run code in the kernel (ie a root privilege escalation). (CVE-2007-4573). Severity : major Bugzilla : 13093 Description: O_DIRECT bypasses client statistics. Details : When running with O_DIRECT I/O, neither the client rpc_stats nor read_ahead_stats were updated. copied the stats section from osc_send_oap_rpc() into async_internal(). Severity : normal Bugzilla : 13454 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla Severity : minor Bugzilla : 13732 Description: change order of libsysio includes Details : '#include sysio.h' should always come before '#include xtio.h' Severity : normal Bugzilla : 11673 Description: handle "serious error: objid * already exists" more gracefully Details : If LAST_ID value on disk is smaller than the objects existing in the O/0/d* directories, it indicates disk corruption and causes an LBUG(). If the object is 0-length, then we should use the existing object. This will help to avoid a full fsck in most cases. Severity : enhancement Bugzilla : 13207 Description: adapt the lustre_config script to support the upgrade case Details : Add "-u" option for lustre_config script to support upgrading 1.4 server targets to 1.6 in parallel. Severity : normal Bugzilla : 13570 Description: To avoid grant space > avaible space when the disk is almost full. Without this patch you might see the error "grant XXXX > available" or some LBUG about grant, when the disk is almost full. Details : In filter_check_grant, for non_grant cache write, we should check the left space by if (*left > ungranted + bytes), instead of (*left > ungranted), because only we are sure the left space is enough for another "bytes", then the ungrant space should be increase. In client, we should update cl_avail_grant only there is OBD_MD_FLGRANT in the reply. Severity : critical Bugzilla : 13748 Description: Update RHEL 4 kernel to fix local root privilege escalation. Details : Update to the latest RHEL 4 kernel to fix the vulnerability described in CVE-2007-4573. This problem could allow untrusted local users to gain root access. Severity : normal Frequency : when using O_DIRECT and quotas Bugzilla : 13930 Description: Incorrect file ownership on O_DIRECT output files Details : block usage reported by 'lfs quota' does not take into account files that have been written with O_DIRECT. Severity : normal Frequency : always Bugzilla : 13976 Description: touch file failed when fs is not full Details : OST in recovery should not be discarded by MDS in alloc_qos(), otherwise we can get ENOSP while fs is not full. Severity : normal Bugzilla : 11301 Description: parallel lock callbacks Details : Instead of sending blocking and completion callbacks as separated requests, adding them to a set and sending in parallel. Severity : normal Frequency : only for Cray XT3 Bugzilla : 12829/13455 Description: Changing primary group doesn't change the group lustre assigns to a file Details : When CRAY_XT3 is defined, the fsgid supplied by the client is overridden with the primary group provided by the group upcall, whereas the supplied fsgid can be trusted if it is in the list of supplementary groups returned by the group upcall. Severity : enhancement Bugzilla : 14398 Description: Allow masking D_WARNING, D_ERROR messages from console Details : Console messages can now be disabled via lnet.printk. Severity : normal Bugzilla : 14614 Description: User code with malformed file open parameter crashes client node Details : Before packing join_file req, all the related reference should be checked carefully in case some malformed flags cause fake join_file req on client. Severity : normal Bugzilla : 14225 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK Details : ldlm_completion_ast() assumes that a lock is granted when the req mode is equal to the granted mode. However, it should also check that LDLM_FL_CP_REQD is not set. Severity : normal Bugzilla : 14360 Description: Heavy nfs access might result in deadlocks Details : After ELC code landed, it is now improper to enqueue any mds locks under och_sem, because enqueue might want to decide to cancel open locks for same inode we are holding och_sem for. Severity : normal Bugzilla : 13843 Description: Client eviction while running blogbench Details : A lot of unlink operations with concurrent I/O can lead to a deadlock causing evictions. To address the problem, the number of oustanding OST_DESTROY requests is now throttled to max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking callbacks are processed in priority. Severity : normal Bugzilla : 13829 Description: enable ACLs on MDS by default Details : ACLs must be enabled on MDS by default. Severity : normal Frequency : PPC/PPC64 only Bugzilla : 14845 Description: conflicts between asm-ppc64/types.h and lustre_types.h Details : fix duplicated definitions between asm-ppc64/types.h and lustre_types.h on PPC. Severity : normal Frequency : PPC/PPC64 only Bugzilla : 14844 Description: asm-ppc/segment.h does not exist Details : fix compile issue on PPC. Severity : normal Bugzilla : 14864 Description: better handle error messages in extents code Severity : normal Frequency : RHEL4 only Bugzilla : 14618 Description: mkfs is very slow on IA64/RHEL4 Details : A performance regression has been discovered in the MPT Fusion driver between versions 3.02.73rh and 3.02.99.00rh. As a consequence, we have downgraded the MPT Fusion driver in the RHEL4 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed. Severity : enhancement Bugzilla : 14729 Description: SNMP support enhancement Details : Adding total number of sampled request for an MDS node in snmp support. Severity : enhancement Bugzilla : 14748 Description: Optimize ldlm waiting list processing for PR extent locks Details : When processing waiting list for read extent lock and meeting read lock that is same or wider to it that is not contended, skip processing rest of the list and immediatelly return current status of conflictness, since we are guaranteed there are no conflicting locks in the rest of the list. Severity : normal Bugzilla : 14774 Description: Time out and refuse to reconnect Details : When the failover node is the primary node, it is possible to have two identical connections in imp_conn_list. We must compare not conn's pointers but NIDs, otherwise we can defeat connection throttling. Severity : normal Bugzilla : 13821 Description: port llog fixes from b1_6 into HEAD Details : Port llog reference couting and some llog cleanups from b1_6 (bug 10800) into HEAD, for protect from panic and access to already free llog structures. Severity : normal Bugzilla : 14483 Description: Detect stride IO mode in read-ahead Details : When a client does stride read, read-ahead should detect that and read-ahead pages according to the detected stride pattern. Severity : normal Bugzilla : 13805 Description: data checksumming impacts single node performance Details : add support for several checksum algorithm. Currently, only CRC32 and Adler-32 are supported. The checksum type can be changed on the fly via /proc/fs/lustre/osc/*/checksum_type. Severity : normal Bugzilla : 14648 Description: use adler32 for page checksums Details : when available, use the Adler-32 algorithm instead of CRC32 for page checksums. Severity : normal Bugzilla : 15033 Description: build for x2 fails Details : fix compile issue on Cray systems. Severity : normal Bugzilla : 14379 Description: Properly match for duplicate locks Details : Due to different lock order from skiplists code, we need to traverse entire list for now Severity : normal Frequency : only on PPC/SLES10 Bugzilla : 14855 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to be defined. Add a hack in mkfs_lustre.c to work around this compile issue. Severity : normal Bugzilla : 14257 Description: LASSERT on MDS when client holding flock lock dies Details : ldlm pool logic depends on number of granted locks equal to number of released locks which is not true for flock locks, so just exclude such locks from consideration. Severity : normal Bugzilla : 15188 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled Details : Use fsfilt_sync() for both the whole filesystem sync and individual file sync to eliminate dangerous inode locking with I_LOCK that can lead to a deadlock. Severity : normal Bugzilla : 14410 Description: performance in 1.6.3 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be sure that 1MB requests are not fragmented by the block layer. Severity : enhancement Bugzilla : 11089 Description: organize the server-side client stats on per-nid basis Details : Change the structure of stats under obdfilter and mds to New structure: +- exports +- nid#1 | + stats | + uuids +- nid#2... +- clear The "uuid"s file would list the uuids of _active_ exports. And the clear entry is to clear all stats and stale nids. Severity : enhancement Bugzilla : 11270 Description: eliminate client locks in face of contention Details : file contention detection and lockless i/o implementation for contended files. Severity : normal Bugzilla : 15212 Description: Reinitialize optind to 0 so that interactive lfs works in all cases Severity : critical Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12 Bugzilla : 15777 Description: MDS may lose file striping (and hence file data) in some cases Details : If there are additional extended attributes stored on the MDS, in particular ACLs, SELinux, or user attributes (if user_xattr is specified for the client mount options) then there is a risk of attribute loss. Additionally, the Lustre file striping needs to be larger than default (e.g. striped over all OSTs), and an additional attribute must be stored initially in the inode and then increase in size enough to be moved to the external attribute block (e.g. ACL growing in size) for file data to be lost. Severity : normal Bugzilla : 15346 Description: skiplist implementation simplification Details : skiplists are used to group compatible locks on granted list that was implemented as tracking first and last lock of each lock group the patch changes that to using doubly linked lists Severity : normal Bugzilla : 15574 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild)) Details : Change LASSERTs to client eviction (i.e. abort client's recovery) because LASSERT on both the data supplied by a client, and the data on disk is dangerous and incorrect. Severity : enhancement Bugzilla : 10718 Description: Slow truncate/writes to huge files at high offsets. Details : Directly associate cached pages to lock that protect those pages, this allows us to quickly find what pages to write and remove once lock callback is received. Severity : normal Bugzilla : 15953 Description: more ldlm soft lockups Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump() starve other threads from the resource lock for a long time in case of long waiting queue, so change the debug level from D_OTHER to the less frequently used D_INFO. Severity : enhancement Bugzilla : 13128 Description: add -gid, -group, -uid, -user options to lfs find Severity : normal Bugzilla : 15950 Description: Hung threads in invalidate_inode_pages2_range Details : The direct IO path doesn't call check_rpcs to submit a new RPC once one is completed. As a result, some RPCs are stuck in the queue and are never sent. Severity : normal Bugzilla : 14629 Description: filter threads hungs on waiting journal commit Details : Cleanup filter group llog code, then only filter group llog will be only created in the MDS/OST syncing process. Severity : normal Bugzilla : 15684 Description: Procfs and llog threads access destoryed import sometimes. Details : Sync the import destoryed process with procfs and llog threads by the import refcount and semaphore. Severity : enhancement Bugzilla : 14975 Description: openlock cache of b1_6 port to HEAD Severity : major Frequncy : rare Bugzilla : 16226 Description: kernel BUG at ldiskfs2_ext_new_extent_cb Details : If insertion of an extent fails, then discard the inode preallocation and free data blocks else it can lead to duplicate blocks. Severity : normal Bugzilla : 16199 Description: don't always update ctime in ext3_xattr_set_handle() Details : Current xattr code updates inode ctime in ext3_xattr_set_handle. In some cases the ctime should not be updated, for example for 2.0->1.8 compatibility it is necessary to delete an xattr and it should not update the ctime. Severity : major Frequency : rare Bugzilla : 15713/16362 Description: Assertion in iopen_connect_dentry in 1.6.3 Details : looking up an inode via iopen with the wrong generation number can populate the dcache with a disconneced dentry while the inode number is in the process of being reallocated. This causes an assertion failure in iopen since the inode's dentry list contains both a connected and disconnected dentry. Severity : normal Bugzilla : 16496 Description: assertion failure in ldlm_handle2lock() Details : fix a race between class_handle_unhash() and class_handle2object() introduced in lustre 1.6.5 by bug 13622. Severity : minor Frequency : rare Bugzilla : 12755 Description: Kernel BUG: sd_iostats_bump: unexpected disk index Details : remove the limit of 256 scsi disks in the sd_iostat patch Severity : minor Frequency : rare Bugzilla : 16494 Description: oops in sd_iostats_seq_show() Details : unloading/reloading the scsi low level driver triggers a kernel bug when trying to access the sd iostat file. Severity : major Frequency : rare Bugzilla : 16404 Description: Kernel panics during QLogic driver reload Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat patch, causing memory corruption. Severity : minor Frequency : rare Bugzilla : 16140 Description: journal_dev option does not work in b1_6 Details : pass mount option during pre-mount. Severity : enhancement Bugzilla : 10555 Description: Add a FIEMAP(FIle Extent MAP) ioctl Details : FIEMAP ioctl will allow an application to efficiently fetch the extent information of a file. It can be used to map logical blocks in a file to physical blocks in the block device. Severity : normal Bugzilla : 15198 Description: LDLM soft lockups - improvement Details : It is be possible to send the lock handle along with each read or write request because the client is already doing a lock match itself so there isn't any reason the OST should have to re-do that search. Severity : normal Frequency : only on Cray X2 Bugzilla : 16813 Description: X2 build failures Details : fix build failures on Cray X2. Severity : normal Bugzilla : 2066 Description: xid & resent requests Details : Initialize RPC XID from clock at startup (randomly if clock is bad). Severity : enhancement Bugzilla : 14095 Description: Add lustre_start utility to start or stop multiple Lustre servers from a CSV file. Severity : major Bugzilla : 17024 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373} Details : In case of memory pressure, list_del() can be called twice on req->rq_history_list, causing a kernel oops. Severity : normal Bugzilla : 17026 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed Details : fix stack overflow in the distributed lock manager by defering export eviction after a failed AST to the elt thread instead of handling it in the dlm interpret routine. Severity : normal Bugzilla : 16450 Description: Convert some comments to new format. Details : Update documenting comments to match doxygen conventions. Severity : normal Bugzilla : 16450 Description: Grammar fixes. Details : A couple of trivial spelling fixes. Severity : normal Bugzilla : 16450 Description: OSD_COUNTERS-mandatory Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory to simplify the code. Severity : normal Bugzilla : 16450 Description: simplify cmm_device freeing logic. Details : Call cmm_device_free() in the failure path of cmm_device_alloc(). Severity : normal Bugzilla : 16450 Description: Add lockdep support to dt_object_operations locking interface. Details : Augment ->do_{read,write}_lock() prototypes with a `role' parameter indicating lock ordering. Update mdd code to use new locking interface. Severity : normal Bugzilla : 16450 Description: Introduce failloc constants for lockless IO tests. Details : Add two new failloc constants to test lockless IO. Only one of them in implemented---another is checked in yet to be landed core CLIO code. Severity : normal Bugzilla : 16450 Description: Add lockdep support for inode mutex. Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used in the situations where Lustre has to lock more than one inode mutex at a time. Severity : normal Bugzilla : 16450 Description: Add optional invariants checking support. Details : Add new LINVRNT() macro, optional on new --enable-invariants configure switch. This macro is to be used for consistency and sanity checks that are too expensive to be left in `production' mode. Severity : minor Bugzilla : 16450 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE. Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to its initial state. Severity : normal Bugzilla : 16450 Description: Add lockdep support for ldlm_lock and ldlm_resource. Details : Use spin_lock_nested() in (the only) situation where more than one ldlm_lock is locked simultaneously. Also, fix possible dead-lock in ldlm_lock_change_resource() by enforcing particular lock ordering. Severity : normal Bugzilla : 16450 Description: Use struct ldlm_callback_suite in ldlm_lock_create(). Details : Instead of specifying each ldlm_lock call-back through separate parameter, wrap them into struct ldlm_callback_suite. Severity : normal Bugzilla : 16450 Description: Kill join_lru obd method and its callers. Details : CLIO uses lock weighting policy to keep locks over mmapped regions in memory---a requirement implemented through ->o_join_lru() obd method in HEAD. Remove this method and its users. Severity : normal Bugzilla : 16450 Description: Add asynchronous ldlm ENQUEUE completion handler. Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a case that stock ldlm_completion_ast() cannot handle as it waits until lock is granted. Introduce new ldlm_completion_ast_async() for this. Also comment ldlm_completion_ast(). Severity : normal Bugzilla : 16450 Description: ldlm_error <-> errno conversion. Details : Add functions to map (rather arbitrary) between LDLM error codes and standard errno values. CLIO needs this to prevent LDLM specific constants from escaping ldlm and osc. Severity : minor Bugzilla : 16450 Description: Kill unused ldlm_handle2lock_ns() function. Details : Kill unused ldlm_handle2lock_ns() function. Severity : normal Bugzilla : 16450 Description: Add lu_ref support to ldlm_lock Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch. lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock and ldlm_resource. LDLM interface has to be changed, because code that releases a reference on a lock, has to "know" what reference this is. In the most frequent case lock = ldlm_handle2lock(handle); ... LDLM_LOCK_PUT(lock); no changes are required. When any other reference (received _not_ from ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called instead of LDLM_LOCK_PUT(). Arguably, changes are pervasive, and interface requires some discipline for proper use. On the other hand, it was very instrumental in finding a few leaked lock references. Severity : normal Bugzilla : 16450 Description: Add ldlm_lock_addref_try(). Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that attempts to addref a lock that might be being canceled concurrently. Severity : normal Bugzilla : 16450 Description: Add ldlm_weigh_callback(). Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called by ldlm_cancel_shrink_policy() to estimate lock "value", instead of hard-coded `number of pages' logic. Severity : normal Bugzilla : 16450 Description: Add lockdep annotations to llog code. Details : Use appropriately tagged _nested() locking calls in the places where llog takes more than one ->lgh_lock lock. Severity : minor Bugzilla : 16450 Description: Add loi_kms_set(). Details : Wrap kms updates into a helper function. Severity : minor Bugzilla : 16450 Description: Constify instances of struct lsm_operations. Details : Constify instances of struct lsm_operations. Severity : normal Bugzilla : 16450 Description: lu_conf support. Details : On a server, a file system object is uniquely identified by a fid, which is sufficient to locate and load all object state (inode). On a client, on the other hand, more data are necessary instantiate an object. Change lu_object_find() and friends to take additional `lu_conf' argument describing object. Typically this includes layout information. Severity : normal Bugzilla : 16450 Description: lu_context fixes. Details : Introduce new lu_context functions that are needed on the client side, where some system threads (ptlrpcd) are shared by multiple modules, and so cannot be stopped during module shutdown. Severity : normal Bugzilla : 16450 Description: Add start and stop methods to lu_device_type_operations. Details : Introduce two new methods in lu_device_type_operations, that are invoked when first instance of a given type is created and last one is destroyed respectively. This is need by CLIO. Severity : normal Bugzilla : 16450 Description: Add lu_ref support to struct lu_device. Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to track leaked references. Severity : normal Bugzilla : 16450 Description: Introduce lu_kmem_descr. Details : lu_kmem_descr and its companion interface allow to create and destroy a number of kmem caches at once. Severity : normal Bugzilla : 16450 Description: Fix lu_object finalization race. Details : Fix a race between lu_object_find() finding an object and its concurrent finalization. This race is (most likely) not possible on the server, but might happen on the client. Severity : normal Bugzilla : 16450 Description: Introduce lu_ref interface. Details : lu_ref is a debugging module allowing to track references to a given object. It is quite cpu expensive, and has to be explicitly enabled with --enable-lu_ref. See usage description within the patch. Severity : minor Bugzilla : 16450 Description: Factor lu_site procfs stats into a separate function. Details : Separate lu_site stats printing code into a separate function that can be reused on a client. Severity : minor Bugzilla : 16450 Description: Constify instances of struct {lu,dt,md}_device_operations. Details : Constify instances of struct {lu,dt,md}_device_operations. Severity : normal Bugzilla : 16450 Description: Introduce struct md_site and move meta-data specific parts of struct lu_site here. Details : Move md-specific fields out of struct lu_site into special struct md_site, so that lu_site can be used on a client. Severity : minor Bugzilla : 16450 Description: Kill mdd_lov_destroy(). Details : Remove unused mdd code. Severity : minor Bugzilla : 16450 Description: Add st_block checking to multistat.c. Details : Add st_block checking to multistat.c. Severity : normal Bugzilla : 16450 Description: Add lu_ref support to struct obd_device. Details : Add lu_ref tracking to obd_device. Severity : minor Bugzilla : 16450 Description: Kill obd_set_fail_loc(). Details : Remove unused code. Severity : normal Bugzilla : 16450 Description: Add special type for ptlrpc_request interpret functions. Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed there. Actual usage will be in CLIO. Severity : normal Bugzilla : 16450 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init(). Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former doesn't work with lockdep. Severity : normal Bugzilla : 16450 Description: Add rwv.c test program. Details : New testing program exercising readv(2) and writev(2) (Qian). Severity : normal Bugzilla : 16450 Description: Add sendfile.c test program. Details : New testing program exercising sendfile(2) (Jay). Severity : minor Bugzilla : 16450 Description: Ratelimit a message that can be very frequent. Details : Ratelimit a memory allocation failure message that can be too chatty. Severity : minor Bugzilla : 16450 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs. Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs. Severity : normal Bugzilla : 16450 Description: Liblustre build fixes. Details : Liblustre build fixes. Severity : normal Bugzilla : 16450 Description: libcfs: add cfs_{need,cond}_resched() interface. Details : libcfs: add cfs_{need,cond}_resched() definition and implementations for Linux, NT, and liblustre. Severity : enhancement Bugzilla : 12800 Description: More exported tunables for mballoc Details : Add support for tunable preallocation window and new tunables for large/small requests Severity : normal Bugzilla : 16680 Description: Detect corruption of block bitmap and checking for preallocations Details : Checks validity of on-disk block bitmap. Also it does better checking of number of applied preallocations. When corruption is found, it turns filesystem readonly to prevent further corruptions. Severity : normal Bugzilla : 17197 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead window to 0. If it does hit cache miss, and read-pattern is still stride-io mode, does not reset the stride window, but also does not increase the stride window length in this case. Severity : normal Bugzilla : 16438 Frequency : only for big-endian servers Description: Check if system is big-endian while mounting fs with extents feature Details : Mounting a filesystem with extents feature will fail on big-endian systems since ext3-based ldiskfs is not supported on big-endian systems. This can be over-riden with "bigendian_extents" mount option. Severity : enhancement Bugzilla : 12749 Description: The root squash functionality Details : A security feature, which is to prevent users from being able to mount lustre on their desktop, run as root, and delete all of the files in the filesystem. The goal is accomplished by remapping user id (UID) and group id (GID) of the root user to a UID and GID specified by the system administartor via Lustre configuration management server (MGS). The functionality also allows to specify sets of clients for which the remapping does not apply. Severity : normal Bugzilla : 16860 Description: Excessive recovery window Details : With AT enabled, the recovery window can be excessively long (6000+ seconds). To address this problem, we no longer use OBD_RECOVERY_FACTOR when extending the recovery window (the connect timeout no longer depends on the service time, it is set to INITIAL_CONNECT_TIMEOUT now) and clients report the old service time via pb_service_time. Severity : normal Bugzilla : 16522 Description: Watchdog triggered on MDS failover Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that the OSTs know that the MDS "UUID" can be reused for the same export from a different NID, so we do not need to wait for the export to be evicted Severity : major Frequency : rare, only if using MMP with Linux RAID Bugzilla : 17895 Description: MMP doesn't work with Linux RAID Details : While using HA for Lustre servers with Linux RAID, it is possible that MMP will not detect multiple mounts. To make this work we need to unplug the device queue in RAID when the MMP block is being written. Also while reading the MMP block, we should read it from disk and not the cached one. Severity : enhancement Bugzilla : 17187 Description: open file using fid Details : A file can be opened using just its fid, like /.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication Severity : normal Frequency : Only in RHEL5 when mounting multiple ext3 filesystems simultaneously Bugzilla : 19184 Description: "kmem_cache_create: duplicate cache jbd_4k" error message Details : add proper locking for creation of jbd_4k slab cache Severity : normal Bugzilla : 19058 Description: MMP check in ext3_remount() fails without displaying any error Details : When multiple mount protection fails during remount, proper error should be returned Severity : enhancement Bugzilla : 16823 Description: Allow stripe size to be up to 4G-64k Details : Fix math logic to allow large stripe sizes. Severity : high Bugzilla : 17569 Description: add check for >8TB ldiskfs filesystems Details : ext3-based ldiskfs does not support greater than 8TB LUNs. Don't allow >8TB ldiskfs filesystems to be mounted without force_over_8tb mount option Severity : normal Frequency : rare Bugzilla : 18793 Descriptoin: OSS complains "too many blocks" and crashes Details : In filter_commitrw_write(): 1. lquota_chkquota(); 2. obdo_from_inode(); 3. lquota_pending_commit(); "2." has changed uid and gid in this case, then caused lquota_chkquota() and lquota_pending_commit() to use different uid and gid. That is the root of the bug. Severity : normal Bugzilla : 20463 Descriptoin: getstripe doesn't report stripe count = -1 sanely Details : Detect and print out the 'stripe count = -1' case properly. Severity : normal Bugzilla : 19128 Description: Out or order replies might be lost on replay Details : In ptlrpc_retain_replayable_request if we cannot find retained request with tid smaller then one currently being added, add it to the start, not end of the list. -------------------------------------------------------------------------------- 2007-08-10 Cluster File Systems, Inc. * version 1.6.1 * Support for kernels: 2.6.5-7.283 (SLES 9), 2.6.9-55.EL (RHEL 4), 2.6.16.46-0.14 (SLES 10), 2.6.18.8 vanilla (kernel.org) * Client support for unpatched kernels: (see http://wiki.lustre.org/index.php?title=Patchless_Client) 2.6.16 - 2.6.22 vanilla (kernel.org) * Due to recently discovered recovery problems, we do not recommend using patchless RHEL 4 clients with this or any earlier release. * Recommended e2fsprogs version: 1.39.cfs8 * Note that reiserfs quotas are disabled on SLES 10 in this kernel. * Starting with this release, the ldiskfs backing filesystem required by Lustre is now in its own package, lustre-ldiskfs. This package should be installed. It is versioned separately from Lustre and may be released separately in future. Severity : minor Bugzilla : 13147 Description: block reactivating mgc import until all deactivates complete Details : Fix race when failing back MDT/MGS to itself (testing) Severity : minor Frequency : at statup only Bugzilla : 12860 Description: mds_lov_synchronize race leads to various problems Details : simultaneous MDT->OST connections at startup can cause the sync to abort, leaving the OSC in a bad state. Severity : enhancement Bugzilla : 12194 Description: add optional extra BUILD_VERSION info Details : add a new environment variable (namely LUSTRE_VERS) which allows to override the lustre version. Severity : normal Frequency : 2.6.18 servers only Bugzilla : 12546 Description: ll_kern_mount() doesn't release the module reference Details : The ldiskfs module reference count never drops down to 0 because ll_kern_mount() doesn't release the module reference. Severity : normal Frequency : rare Bugzilla : 12470 Description: server LBUG when using old ost_num_threads parameter Details : Accept the old ost_num_threads parameter but warn that it is deprecated, and fix an off-by-one error that caused an LBUG. Severity : normal Frequency : rare Bugzilla : 11722 Description: Transient SCSI error results in persistent IO issue Details : iobuf->dr_error is not reinitialized to 0 between two uses. Severity : normal Frequency : sometimes when underlying device returns I/O errors Bugzilla : 11743 Description: OSTs not going read-only during write failures Details : OSTs are not remounted read-only when the journal commit threads get I/O errors because fsfilt_ext3 calls journal_start/stop() instead of the ext3 wrappers. Severity : minor Bugzilla : 12364 Description: poor connect scaling with increasing client count Details : Don't run filter_grant_sanity_check for more than 100 exports to improve scaling for large numbers of clients. Severity : normal Frequency : SLES10 only Bugzilla : 12538 Description: sanity-quota.sh quotacheck failed: rc = -22 Details : Quotas cannot be enabled on SLES10. Severity : normal Frequency : liblustre clients only Bugzilla : 12229 Description: getdirentries does not give error when run on compute nodes Details : getdirentries does not fail when the size specified as an argument is too small to contain at least one entry Severity : enhancement Bugzilla : 11548 Description: Add LNET router traceability for debug purposes Details : If a checksum failure occurs with a router as part of the IO path, the NID of the last router that forwarded the bulk data is printed so it can be identified. Severity : normal Frequency : rare Bugzilla : 11315 Description: OST "spontaneously" evicts client; client has imp_pingable == 0 Details : Due to a race condition, liblustre clients were occasionally evicted incorrectly. Severity : enhancement Bugzilla : 10997 Description: lfs setstripe use optional parameters instead of postional parameters. Severity : enhancement Bugzilla : 10651 Description: Nanosecond timestamp support for ldiskfs Details : The on-disk ldiskfs filesystem has added support for nanosecond resolution timestamps. There is not yet support for this at the Lustre filesystem level. Severity : normal Frequency : during server recovery Bugzilla : 11203 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING Details : request with rq_no_resend flag not awake l_wait_event if they get a timeout. Severity : minor Frequency : nfs export on patchless client Bugzilla : 11970 Description: connectathon hang when test nfs export over patchless client Details : Disconnected dentry cannot be found with lookup, so we do not need to unhash it or make it invalid Bugzilla : 11757 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead of using an ioctl. This allows lfsck for > 160 OSTs to succeed. Severity : minor Frequency : rare Bugzilla : 11546 Description: open req refcounting wrong on reconnect Details : If reconnect happened between getting open reply from server and call to mdc_set_replay_data in ll_file_open, we will schedule replay for unreferenced request that we are about to free. Subsequent close will crash in variety of ways. Check that request is still eligible for replay in mdc_set_replay_data(). Severity : minor Frequency : rare Bugzilla : 11512 Description: disable writes to filesystem when reading health_check file Details : the default for reading the health_check proc file has changed to NOT do a journal transaction and write to disk, because this can cause reads of the /proc file to hang and block HA state checking on a healthy but otherwise heavily loaded system. It is possible to return to the previous behaviour during configure with --enable-health-write. Severity : enhancement Bugzilla : 10768 Description: 64-bit inode version Details: : Add a on-disk 64-bit inode version for ext3 to track changes made to the inode. This will be required for version-based recovery. Severity : normal Frequency : rare Bugzilla : 11818 Description: MDS fails to start if a duplicate client export is detected Details : in some rare cases it was possible for a client to connect to an MDS multiple times. Upon recovery the MDS would detect this and fail during startup. Handle this more gracefully. Severity : enhancement Bugzilla : 11563 Description: Add -o localflock option to simulate old noflock behaviour. Details : This will achieve local-only flock/fcntl locks coherentness. Severity : minor Frequency : rare Bugzilla : 11658 Description: log_commit_thread vs filter_destroy race leads to crash Details : Take import reference before releasing llog record semaphore Severity : normal Frequency : rare Bugzilla : 12477 Description: Wrong request locking in request set processing Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to imp_delayed_list, in this place should be used imp_lock. Severity : normal Frequency : when reconnection Bugzilla : 11662 Description: Grant Leak when osc reconnect to OST Details : When osc reconnect ost, OST(filter) should check whether it should grant more space to client by comparing fed_grant and cl_avail_grant, and return the granted space to client instead of "new granted" space, because client will call osc_init_grant to update the client grant space info. Severity : normal Frequency : when client reconnect to OST Bugzilla : 11662 Description: Grant Leak when osc do resend and replay bulk write Details : When osc reconnect to OST, OST(filter)should clear grant info of bulk write request, because the grant info while be sync between OSC and OST when reconnect, and we should ignore the grant info these of resend/replay write req. Severity : normal Frequency : rare Bugzilla : 11662 Description: Grant space more than avaiable left space sometimes. Details : When then OST is about to be full, if two bulk writing from different clients came to OST. Accord the avaliable space of the OST, the first req should be permitted, and the second one should be denied by ENOSPC. But if the seconde arrived before the first one is commited. The OST might wrongly permit second writing, which will cause grant space > avaiable space. Severity : normal Frequency : when client is evicted Bugzilla : 12371 Description: Grant might be wrongly erased when osc is evicted by OST Details : when the import is evicted by server, it will fork another thread ptlrpc_invalidate_import_thread to invalidate the import, where the grant will be set to 0. While the original thread will update the grant it got when connecting. So if the former happened latter, the grant will be wrongly errased because of this race. Severity : normal Frequency : rare Bugzilla : 12401 Description: Checking Stale with correct fid Details : ll_revalidate_it should uses de_inode instead of op_data.fid2 to check whether it is stale, because sometimes, we want the enqueue happened anyway, and op_data.fid2 will not be initialized. Severity : enhancement Bugzilla : 11647 Description: update patchless client Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5 Severity : normal Frequency : only with 2.4 kernel Bugzilla : 12134 Description: random memory corruption Details : size of struct ll_inode_info is to big for union inode.u and this can be cause of random memory corruption. Severity : normal Frequency : rare Bugzilla : 10818 Description: Memory leak in recovery Details : Lov_mds_md was not free in an error handler in mds_create_object. It should also check obd_fail before fsfilt_start, otherwise if fsfilt_start return -EROFS,(failover mds during mds recovery). then the req will return with repmsg->transno = 0 and rc = EROFS. and we met hit the assert LASSERT(req->rq_reqmsg->transno == req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should be freed no matter whether fsfilt_commit success or not. Severity : minor Frequency : only with huge count clients Bugzilla : 11817 Description: Prevents from taking the superblock lock in llap_from_page for a soon died page. Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW for llap_from_page call in ll_removepage prevents from taking the superblock lock for a soon died page. Severity : normal Frequency : rare Bugzilla : 11935 Description: Not check open intent error before release open handle Details : in some rare cases, the open intent error is not checked before release open handle, which may cause ASSERTION(open_req->rq_transno != 0), because it tries to release the failed open handle. Severity : normal Frequency : rare Bugzilla : 12556 Description: Set cat log bitmap only after create log success. Details : in some rare cases, the cat log bitmap is set too early. and it should be set only after create log success. Severity : major Bugzilla : 11971 Description: Accessing a block bevice can re-enable I/O when Lustre is tearing down a device. Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of blkdev_put(). Severity : minor Bugzilla : 11706 Description: service threads may hog cpus when there are a lot of requests Details : Insert cond_resched to give other threads a chance to use some CPU Severity : normal Frequency : rare Bugzilla : 12086 Description: the cat log was not initialized in recovery Details : When mds(mgs) do recovery, the tgt_count might be zero, so the unlink log on mds will not be initialized until mds post recovery. And also in mds post recovery, the unlink log will initialization will be done asynchronausly, so there will be race between add unlink log and unlink log initialization. Severity : normal Bugzilla : 12597 Description: brw_stats were being printed incorrectly Details : brw_stats were being printed as log2 but all of them were not recorded as log2. Also remove some code duplication arising from filter_tally_{read,write}. Severity : normal Bugzilla : 11674 Frequency : rare, only in recovery. Description: ASSERTION(req->rq_type != LI_POISON) failed Details : imp_lock should be held while iterating over imp_sending_list for prevent destroy request after get timeout in ptlrpc_queue_wait. Severity : normal Bugzilla : 12689 Description: replay-single.sh test 52 fails Details : A lock's skiplist need to be cleanup when it being unlinked from its resource list. Severity : normal Bugzilla : 11737 Description: Short directio read returns full requested size rather than actual amount read. Details : Direct I/O operations should return actual amount of bytes transferred rather than requested size. Severity : enhancement Bugzilla : 10589 Description: metadata RPC reduction (e.g. for rm performance) Details : decrease the amount of synchronous RPC between clients and servers by canceling conflicing lock before the operation on the client and packing thier handles into the main operation RPC to server. Severity : enhancement Bugzilla : 4900 Description: Async OSC create to avoid the blocking unnecessarily. Details : If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time. Severity : major Bugzilla : 11710 Description: improve handling recoverable errors Details : if request processig with error which can be recoverable on server request should be resend, otherwise page released from cache and marked as error. Severity : enhancement Bugzilla : 12702 Description: refine locking for avoid write wrong info into lov_objid file Details : fix possible races with add new target and write/update data in lov_objid file. -------------------------------------------------------------------------------- 2007-05-03 Cluster File Systems, Inc. * version 1.6.0.1 * bug fixes Severity : normal Frequency : on some architectures Bugzilla : 12404 Description: 1.6 client sometimes fails to mount from a 1.4 MDT Details : Uninitialized flags sometimes cause configuration commands to be skipped. Severity : normal Frequency : patchless clients only Bugzilla : 12391 Description: missing __iget() symbol export Details : The __iget() symbol export is missing. To avoid the need for this on patchless clients the deathrow inode reaper is turned off, and we depend on the VM to clean up old inodes. This dependency was during via the fix for bug 12181. -------------------------------------------------------------------------------- 2007-04-19 Cluster File Systems, Inc. * version 1.6.0 * CONFIGURATION CHANGE. This version of Lustre WILL NOT INTEROPERATE with older versions automatically. In many cases a special upgrade step is needed. Please read the user documentation before upgrading any part of a live system. * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This version will not interoperate with 1.6 betas before beta5 (1.5.95). * WARNING: Lustre configuration and startup changes are required with this release. See https://mail.clusterfs.com/wikis/lustre/MountConf for details. * bug fixes Severity : enhancement Bugzilla : 8007 Description: MountConf Details : Lustre configuration is now managed via mkfs and mount commands instead of lmc and lconf. New obd types (MGS, MGC) are added for dynamic configuration management. See https://mail.clusterfs.com/wikis/lustre/MountConf for details. Severity : enhancement Bugzilla : 4482 Description: dynamic OST addition Details : OSTs can now be added to a live filesystem Severity : enhancement Bugzilla : 9851 Description: startup order invariance Details : MDTs and OSTs can be started in any order. Clients only require the MDT to complete startup. Severity : enhancement Bugzilla : 4899 Description: parallel, asynchronous orphan cleanup Details : orphan cleanup is now performed in separate threads for each OST, allowing parallel non-blocking operation. Severity : enhancement Bugzilla : 9862 Description: optimized stripe assignment Details : stripe assignments are now made based on ost space available, ost previous usage, and OSS previous usage, in order to try to optimize storage space and networking resources. Severity : enhancement Bugzilla : 4226 Description: Permanently set tunables Details : All writable /proc/fs/lustre tunables can now be permanently set on a per-server basis, at mkfs time or on a live system. Severity : enhancement Bugzilla : 10547 Description: Lustre message v2 Details : Add lustre message format v2. Severity : enhancement Bugzilla : 9866 Description: client OST exclusion list Details : Clients can be started with a list of OSTs that should be declared "inactive" for known non-responsive OSTs. Severity : minor Bugzilla : 6062 Description: SPEC SFS validation failure on NFS v2 over lustre. Details : Changes the blocksize for regular files to be 2x RPC size, and not depend on stripe size. Severity : enhancement Bugzilla : 9293 Description: Multiple MD RPCs in flight. Details : Further unserialise some read-only MDS RPCs - learn about intents. To avoid overly-overloading MDS, introduce a limit on number of MDS RPCs in flight for a single client and add /proc controls to adjust this limit. Severity : enhancement Bugzilla : 22484 Description: client read/write statistics Details : Add client read/write call usage stats for performance analysis of user processes. /proc/fs/lustre/llite/*/offset_stats shows non-sequential file access. extents_stats shows chunk size distribution. extents_stats_per_process show chunk size distribution per user process. Severity : enhancement Bugzilla : 22486 Description: mds statistics Details : Add detailed mds operations statistics in /proc/fs/lustre/mds/*/stats. Severity : minor Bugzilla : 10667 Description: Failure of copying files with lustre special EAs. Details : Client side always return success for setxattr call for lustre special xattr (currently only "trusted.lov"). Severity : minor Frequency : always Bugzilla : 10345 Description: Refcount LNET uuids Details : The global LNET uuid list grew linearly with every startup; refcount repeated list entries instead of always adding to the list. Severity : enhancement Bugzilla : 2258 Description: Dynamic service threads Details : Within a small range, start extra service threads automatically when the request queue builds up. Severity : major Frequency : mixed-endian client/server environments Bugzilla : 11214 Description: mixed-endian crashes Details : The new msg_v2 system had some failures in mixed-endian environments. Severity : enhancement Bugzilla : 11229 Description: Easy OST removal Details : OSTs can be permanently deactivated with e.g. 'lctl conf_param lustre-OST0001.osc.active=0' Severity : enhancement Bugzilla : 11335 Description: MGS proc entries Details : Added basic proc entries for the MGS showing what filesystems are served. Severity : enhancement Bugzilla : 10998 Description: provide MGS failover Details : Added config lock reacquisition after MGS server failover. Severity : enhancement Bugzilla : 11461 Description: add Linux 2.4 support Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients Severity : normal Bugzilla : 11330 Description: a large application tries to do I/O to the same resource and dies in the middle of it. Details : Check the req->rq_arrival time after the call to ost_brw_lock_get(), but before we do anything about processing it & sending the BULK transfer request. This should help move old stale pending locks off the queue as quickly as obd_timeout. Severity : major Frequency : when an incorrect nid is specified during startup Bugzilla : 10734 Description: ptlrpc connect to non-existant node causes kernel crash Details : LNET can't be re-entered from an event callback, which happened when we expire a message after the export has been cleaned up. Instead, hand the zombie cleanup off to another thread. Severity : enhancement Bugzilla : 10902 Description: plain/inodebits lock performance improvement Details : Grouping plain/inodebits in granted list by their request modes and bits policy, thus improving the performance of search through the granted list. Severity : major Frequency : only if OST filesystem is corrupted Bugzilla : 9829 Description: client incorrectly hits assertion in ptlrpc_replay_req() Details : for a short time RPCs with bulk IO are in the replay list, but replay of bulk IOs is unimplemented. If the OST filesystem is corrupted due to disk cache incoherency and then replay is started it is possible to trip an assertion. Avoid putting committed RPCs into the replay list at all to avoid this issue. Severity : major Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS Bugzilla : 11684 Description: System hang on startup Details : This bug allowed the liblustre (e.g. catamount) client to return to the app before handling all startup RPCs. This could leave the node unresponsive to lustre network traffic and manifested as a server ptllnd timeout. Severity : enhancement Bugzilla : 11667 Description: Add "/proc/sys/lustre/debug_peer_on_timeout" Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT boolean to control whether to print peer debug info when a client's RPC times out. Severity : minor Frequency : only for kernels with patches from Lustre below 1.4.3 Bugzilla : 11248 Description: Remove old rdonly API Details : Remove old rdonly API which unused from at least lustre 1.4.3 Severity : major Frequency : only for devices with external journals Bugzilla : 10719 Description: Set external device read-only also Details : During a commanded failover stop, we set the disk device read-only while the server shuts down. We now also set any external journal device read-only at the same time. Severity : minor Frequency : when upgrading from 1.4 while trying to change parameters Bugzilla : 11692 Description: The wrong (new) MDC name was used when setting parameters for upgraded MDT's. Also allows changing of OSC (and MDC) parameters if --writeconf is specified at tunefs upgrade time. Severity : major Frequency : when setting specific ost indicies Bugzilla : 11149 Description: QOS code breaks on skipped indicies Details : Add checks for missing OST indicies in the QOS code, so OSTs created with --index need not be sequential. Severity : enhancement Bugzilla : 11264 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck Details : The uninit_groups feature works in conjunction with the kernel filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed up the pass1 processing of e2fsck. This is a read-only feature in ldiskfs2 only, so older kernels and current ldiskfs cannot mount filesystems that have had this feature enabled. Severity : enhancement Bugzilla : 10816 Description: Improve multi-block allocation algorithm to avoid fragmentation Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve allocation locality and avoid filesystem fragmentation. ------------------------------------------------------------------------------ 2007-04-01 Cluster File Systems, Inc. * version 1.4.10 * Support for kernels: 2.4.21-47.0.1.EL (RHEL 3) 2.6.5-7.283 (SLES 9) 2.6.9-42.0.10.EL (RHEL 4) 2.6.12.6 vanilla (kernel.org) 2.6.16.27-0.9 (SLES 10) * Recommended e2fsprogs version: 1.39.cfs5 * Note that reiserfs quotas are disabled on SLES 10 in this kernel * bug fixes Severity : critical Frequency : occasional, depends on client load and configuration Bugzilla : 12181, 12203 Description: data loss for recently-modified files Introduced : 1.4.6 Details : In some cases it is possible that recently written or created files may not be written to disk in a timely manner (this should normally be within 30s unless client IO load is very high). The problem appears as zero-length files or files that are a multiple of 1MB in size after a client crash or client eviction that are missing data at the end of the file. This problem is more likely to be hit on clients where files are repeatedly created and unlinked in the same directory, clients have a large amount of RAM, have many CPUs, the filesystem has many OSTs, the clients are rebooted frequently, and/or the files are not accessed by other nodes after being written. The presence of the problem can be detected by looking at /proc/sys/fs/inode-state. If the first number (nr_inodes) is smaller than the second (nr_unused) then dirty files will not be flushed automatically to disk. "sync; sleep 10" should be run several times on the node before unmounting it to update Lustre (this is also safe to run on nodes without this problem). There is also a related kernel bug in the RHEL4 4 2.6.9 kernel that can cause this same problem, so customers using that kernel also need to update the kernel in addition to Lustre. In order to properly fix this bug, the RHEL3 2.4.21 kernel is also updated. It is normal that files written just before a client crash (less than 30s) may not yet have been flushed to disk, even for local filesystems. Severity : normal Frequency : frequent on thin XT3 nodes Bugzilla : 10802 Description: UUID collision on thin XT3 Linux nodes Details : UUIDs on Compute Node Linux XT3 nodes were not generated randomly, since we relied on an insufficiently-seeded PRNG. Severity : normal Frequency : rare Bugzilla : 11693 Description: OSS hangs after "All ost request buffers busy" Details : A deadlock between quota and journal operations caused OSS hangs after printing "All ost request buffers busy." Severity : minor Frequency : always on liblustre builds Bugzilla : 11175 Description: Cleanup compiler warnings on liblustre Severity : minor Frequency : always on liblustre builds on XT3 Bugzilla : 12146 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3. Frequency : always Bugzilla : 3244 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for > 32000 subdirectories Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever subdirectory count crosses 32000. This will aid e2fsck to correctly handle more than 32000 subdirectories. Severity : major Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS Bugzilla : 11684 Description: System hang on startup Details : This bug allowed the liblustre (e.g. catamount) client to return to the app before handling all startup RPCs. This could leave the node unresponsive to lustre network traffic and manifested as a server ptllnd timeout. Severity : enhancement Bugzilla : 11667 Description: Add "/proc/sys/lustre/debug_peer_on_timeout" (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT) boolean to control whether to print peer debug info when a client's RPC times out. Severity : normal Frequency : always Bugzilla : 10214 Description: make O_SYNC working on 2.6 kernels Details : 2.6 kernels use different method for mark pages for write, so need add a code to lustre for O_SYNC work. Severity : minor Frequency : always Bugzilla : 11110 Description: Failure to close file and release space on NFS Details : Put inode details into lock acquired in ll_intent_file_open. Use mdc_intent_lock in ll_intent_open to properly detect all kind of errors unhandled by mdc_enqueue. Severity : major Frequency : rare Bugzilla : 10866 Description: proc file read during shutdown sometimes raced obd removal, causing node crash Details : Add lock to prevent obd access after proc file removal. Severity : normal Frequency : Only for files larger than 4GB on 32-bit clients. Bugzilla : 11237 Description: improperly doing page alignment of locks Details : Modify lustre core code to use CFS_PAGE_* defines instead of PAGE_*. Make CFS_PAGE_MASK a 64-bit mask. Severity : normal Frequency : rarely Bugzilla : 11203 Description: RPCs being resent when they shouldn't be Details : Some RPCs that should not be resent are being resent. This can cause inconsistencies in the RPC state machine. Do not resend such requests. Severity : normal Frequency : rare, only with NFS export Bugzilla : 11669 Description: Crash on NFS re-export node Details : under very unusual load conditions an assertion is hit in ll_intent_file_open() Severity : major Frequency : only if OST filesystem is corrupted Bugzilla : 9829 Description: client incorrectly hits assertion in ptlrpc_replay_req() Details : for a short time RPCs with bulk IO are in the replay list, but replay of bulk IOs is unimplemented. If the OST filesystem is corrupted due to disk cache incoherency and then replay is started it is possible to trip an assertion. Avoid putting committed RPCs into the replay list at all to avoid this issue. Severity : normal Frequency : always Bugzilla : 10901 Description: large O_DIRECT requests fail under memory pressure/fragmentation Details : Large single O_DIRECT read and write calls can fail to allocate a sufficiently large buffer to process the request. In case of allocation failure the allocation is retried with a smaller buffer and broken into smaller requests. Severity : enhancement Bugzilla : 11563 Description: Add -o localflock option to simulate old noflock behaviour. Details : This will achieve local-only flock/fcntl locks coherentness. Severity : normal Frequency : always Bugzilla : 11090 Description: versioning check is incomplete Details : Checking the version difference of client vs. server, report error if the gap is too big. Severity : major Bugzilla : 11710 Frequency : always Description: add support PG_writeback bit Details : add support for PG_writeback bit for Lustre, for more carefull work with page cache in 2.6 kernel. This also fix some deadlocks and remove hack for work O_SYNC with 2.6 kernel. Severity : enhancement Bugzilla : 11264 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck Details : The uninit_groups feature works in conjunction with the kernel filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed up the pass1 processing of e2fsck. This is a read-only feature in ldiskfs2 only, so older kernels and current ldiskfs cannot mount filesystems that have had this feature enabled. Severity : enhancement Bugzilla : 10816 Description: Improve multi-block allocation algorithm to avoid fragmentation Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve allocation locality and avoid filesystem fragmentation. ------------------------------------------------------------------------------ 2007-02-09 Cluster File Systems, Inc. * version 1.4.9 * Support for kernels: 2.6.9-42.0.3.EL (RHEL 4) 2.6.5-7.276 (SLES 9) 2.4.21-47.0.1.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org) 2.6.16.21-0.8 (SLES10) * Recommended e2fsprogs version: 1.39.cfs2-0 * The backwards-compatible /proc/sys/portals symlink has been removed in this release. Before upgrading, please ensure that you change any configuration scripts or /etc/sysctl.conf files that access /proc/sys/portals/* or sysctl portals.* to use the corresponding entry in /proc/sys/lnet or sysctl lnet.*. This change can be made in advance of the upgrade on any system running Lustre 1.4.6 or newer, since /proc/sys/lnet was added in that version. * Note that reiserfs quotas are disabled on SLES 10 in this kernel * bug fixes Severity : minor Frequency : only when quota is used Bugzilla : 11286 Description: avoid scanning export list for quota master Details : Change the algorithms to avoid scanning export list in order to improve the efficiency. Severity : critical Frequency : MDS failover only, very rarely Bugzilla : 11125 Description: "went back in time" messages on mds failover Details : The greatest transno may be lost when the current operation finishes with an error (transno==0) and the client's last_rcvd record is over-written. Save the greatest transno in the mds_last_transno for this case. Severity : minor Frequency : always for specific kernels and striping counts Bugzilla : 11042 Description: client may get "Matching packet too big" without ACL support Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message when trying to access files in certain configurations. The clients should in fact be denied when mounting because they do not understand ACLs. Severity : major Frequency : Cray XT3 with more than 4000 clients and multiple jobs Bugzilla : 10906 Description: many clients connecting with IO in progress causes connect timeouts Details : Avoid synchronous journal commits to avoid delays caused by many clients connecting/disconnecting when bulk IO is in progress. Queue liblustre connect requests on OST_REQUEST_PORTAL instead of OST_IO_PORTAL to avoid delays behind potentially many pending slow IO requests. Severity : normal Frequency : occasionally with multiple writers to a single file Bugzilla : 11081 Description: shared writes to file may result in wrong size reported by stat() Details : Allow growing of kms when extent lock is cancelled Severity : minor Frequency : always with random mmap IO to multi-striped file Bugzilla : 10919 Description: mmap write might be lost if we are writing to a 'hole' in stripe Details : Only if the hole is at the end of OST object so that kms is too small. Fix is to increase kms accordingly in ll_nopage. Severity : normal Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem Bugzilla : 11211 Description: writes to a missing object would leak memory on the OST Details : If there is an inconsistency between the MDS and OST filesystems, such that the MDS references an object that doesn't exist, writes to that object will leak memory due to incorrect cleanup in the error handling path, eventually running out of memory on the OST. Severity : minor Frequency : rare Bugzilla : 11040 Description: Creating too long symlink causes lustre errors Details : Check symlink and name lengths before sending requests to MDS. Severity : normal Frequency : only if flock is enabled (not on by default) Bugzilla : 11415 Description: posix locks not released on fd closure on 2.6.9+ Details : We failed to add posix locks to list of inode locks on 2.6.9+ kernels, this caused such locks not to be released on fd close and then assertions on fs unmount about still used locks. Severity : minor Frequency : MDS failover only, very rarely Bugzilla : 11277 Description: clients may get ASSERTION(granted_lock != NULL) Details : When request was taking a long time, and a client was resending a getattr by name lock request. The were multiple lock requests with the same client lock handle and mds_getattr_name->fixup_handle_for_resent_request found one of the lock handles but later failed with ASSERTION(granted_lock != NULL). Severity : major Frequency : rare Bugzilla : 10891 Description: handle->h_buffer_credits > 0, assertion failure Details : h_buffer_credits is zero after truncate, causing assertion failure. This patch extends the transaction or creates a new one after truncate. Severity : normal Frequency : NFS re-export or patchless client Bugzilla : 11179, 10796 Description: Crash on NFS re-export node (__d_move) Details : We do not want to hash the dentry if we don't have a lock. But if this dentry is later used in d_move, we'd hit uninitialised list head d_hash, so we just do this to init d_hash field but leave dentry unhashed. Severity : normal Frequency : NFS re-export or patchless client Bugzilla : 11135 Description: NFS exports has problem with symbolic link Details : lustre client didn't properly install dentry when re-exported to NFS or running patchless client. Severity : normal Frequency : NFS re-export or patchless client Bugzilla : 10796 Description: Various nfs/patchless fixes. Details : fixes reuse disconected alias for lookup process - this fixes warning "find_exported_dentry: npd != pd", fix permission error with open files at nfs. fix apply umask when do revalidate. Severity : normal Frequency : occasional Bugzilla : 11191 Description: Crash on NFS re-export node Details : calling clear_page() on the wrong pointer triggered oops in generic_mapping_read(). Severity : normal Frequency : rarely, using O_DIRECT IO Bugzilla : 10903 Description: unaligned directio crashes client with LASSERT Details : check for unaligned buffers before trying any requests. Severity : major Frequency : rarely, using CFS RAID5 patches in non-standard kernel series Bugzilla : 11313 Description: stale data returned from RAID cache Details : If only a small amount of IO is done to the RAID device before reading it again it is possible to get stale data from the RAID cache instead of reading it from disk. Severity : normal Frequency : always for sles10 kernel Bugzilla : 10947 Description: sles10 support Details : ll_follow_link: compile fixes and using of nd_set_link under newer kernels. Severity : major Frequency : depends on arch, kernel and compiler version, always on sles10 kernel and x86_64 Bugzilla : 11562 Description: recursive or deep enough symlinks cause stack overflow Details : getting rid of large stack-allocated variable in __vfs_follow_link Severity : minor Frequency : depends on hardware Bugzilla : 11540 Description: lustre write performance loss in the SLES10 kernel Details : the performance loss is caused by using of write barriers in the ext3 code. The SLES10 kernel turns barrier support on by default. The fix is to undo that change for ldiskfs. ------------------------------------------------------------------------------ 2006-12-09 Cluster File Systems, Inc. * version 1.4.8 * Support for kernels: 2.6.9-42.0.3EL (RHEL 4) 2.6.5-7.276 (SLES 9) 2.4.21-47.0.1.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org) * bug fixes Severity : major Frequency : quota enabled and large files being deleted Bugzilla : 10707 Description: releasing more than 4GB of quota at once hangs OST Details : If a user deletes more than 4GB of files on a single OST it will cause the OST to spin in an infinite loop. Release quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+. Severity : minor Frequency : rare Bugzilla : 10845 Description: statfs data retrieved from /proc may be stale or zero Details : When reading per-device statfs data from /proc, in the {kbytes,files}_{total,free,avail} files, it may appear as zero or be out of date. Severity : minor Frequency : systems with MD RAID1 external journal devices Bugzilla : 10832 Description: lconf's call to blkid is confused by RAID1 journal devices Details : Use the "blkid -l" flag to locate the MD RAID device instead of returning all block devices that match the journal UUID. Severity : normal Frequency : always, for aggregate stripe size over 4GB Bugzilla : 10725 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)" Severity : minor Frequency : always if "lfs find" used on a local file/directory Bugzilla : 10864 Description: "lfs find" segfaults if used on a local file/directory Details : The case where a directory component was not specified wasn't handled correctly. Handle this properly. Severity : normal Frequency : always on ppc64 Bugzilla : 10634 Description: the write to an ext3 filesystem mounted with mballoc got stuck Details : ext3_mb_generate_buddy() uses find_next_bit() which does not perform endianness conversion. Severity : major Frequency : rarely (truncate to non-zero file size after write under load) Bugzilla : 10730, 10687 Description: Files padded with zeros to next 4K multiple Details : With filesystems mounted using the "extents" option (2.6 kernels) it is possible that files that are truncated to a non-zero size immediately after being written are filled with zero bytes beyond the truncated size. No file data is lost. Severity : enhancement Bugzilla : 10452 Description: Allow recovery/failover for liblustre clients. Details : liblustre clients were unaware of failover configurations until now. Severity : enhancement Bugzilla : 10743 Description: user file locks should fail when not mounting with flock option Details : Set up an error-returning stub in ll_file_operations.lock field to prevent incorrect behaviour when client is mounted without flock option. Also, set up properly f_op->flock field for RHEL4 kernels. Severity : minor Frequency : always on ia64 Bugzilla : 10905 Description: "lfs df" loops on printing out MDS statfs information Details : The obd_ioctl_data was not initialized and in some systems this caused a failure during the ioctl that did not return an error. Initialize the struct and return an error on failure. Severity : minor Frequency : SLES 9 only Bugzilla : 10667 Description: Error of copying files with lustre special EAs as root Details : Client side always return success for setxattr call for lustre special xattr (currently only "trusted.lov"). Severity : normal Frequency : rarely on clusters with both ia64+i386 clients Bugzilla : 10672 Description: ia64+i686 clients doing shared IO on the same file may LBUG Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE) clients are doing concurrent writes to the same file it is possible that the ia64 clients may LASSERT because the OST extent locks are not PAGE_SIZE aligned. Ensure that grown locks are always aligned on the request boundary. Severity : normal Frequency : specific use, occasional Bugzilla : 7040 Description: Overwriting in use executable truncates on-disk binary image Details : If one node attempts to overwrite an executable in use by another node, we now correctly return ETXTBSY instead of truncating the file. Severity : enhancement Bugzilla : 4900 Description: Async OSC create to avoid the blocking unnecessarily. Details : If a OST has no remain object, system will block on the creating when need to create a new object on this OST. Now, ways use pre-created objects when available, instead of blocking on an empty osc while others are not empty. If we must block, we block for the shortest possible period of time. Severity : normal Frequency : rare Bugzilla : 2707 Description: chmod on Lustre root is propagated to other clients Details : Re-validate root's dentry in ll_lookup_it to avoid having it invalid by the follow_mount time. Severity : minor Frequency : liblustre clients only Bugzilla : 10883 Description: Race in 'instant cancel' lock handling could lead to such locks never to be granted in case of SMP MDS Details : Do not destroy not yet granted but cbpending locks in handle_enqueue Severity : minor Frequency : replay/resend of open Bugzilla : 10991 Description: non null lock assetion failure in mds_intent_policy Details : Trying to replay/resend lockless open requests resulted in mds_open() returning 0 with no lock. Now it sets a flag if a lock is going to be returned. Severity : enhancement Bugzilla : 10889 Description: Checksum enhancements Details : New checksum enhancements allow for resending RPCs that failed checksum checks. Severity : enhancement Bugzilla : 7376 Description: Tunables on number of dirty pages in cacche Details : Allow to set limit on number of dirty pages cached. Severity : normal Frequency : rare Bugzilla : 10643 Description: client crash on unmount - lock still has references Details : In some error handling cases it was possible to leak a lock reference on a client while accessing a file. This was not harmful to the client during operation, but would cause the client to crash when the filesystem is unmounted. Severity : normal Frequency : specific case, rare Bugzilla : 10921 Description: ETXTBSY on mds though file not in use by client Details : ETXTBSY is no longer incorrectly returned when attempting to chmod or chown a directory that the user previously tried to execute or a currently-executing binary. Severity : major Frequency : extremely rare except on liblustre-based clients Bugzilla : 10480 Description: Lustre space not freed when files are deleted Details : Clean up open-unlinked files after client eviction. Previously the unlink was skipped and the files remained as orphans. Severity : normal Frequency : rare Bugzilla : 10999 Description: OST failure "would be an LBUG" in waiting_locks_callback() Details : In some cases it was possible to send a blocking callback to a client doing a glimpse, even though that client didn't get a lock granted. When the glimpse lock is cancelled on the OST the freed lock is left on the waiting list and corrupted the list. Severity : major Frequency : all core dumps Bugzilla : 11103 Description: Broke core dumps to lustre Details : Negative dentry may be unhashed if parent does not have UPDATE lock, but some callers, e.g. do_coredump, expect dentry to be hashed after successful create, hash it in ll_create_it. ------------------------------------------------------------------------------ 2006-09-13 Cluster File Systems, Inc. * version 1.4.7.1 * Support for kernels: 2.6.9-42.0.2.EL (RHEL 4) 2.6.5-7.276 (SLES 9) 2.4.21-40.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org) * bug fix Severity : major Frequency : always on RHEL 3 Bugzilla : 10867 Description: Number of open files grows over time Details : The number of open files grows over time, whether or not Lustre is started. This was due to a filp leak introduced by one of our kernel patches. ------------------------------------------------------------------------------ 08-20-2006 Cluster File Systems, Inc. * version 1.4.7 * Support for kernels: 2.6.9-42.EL (RHEL 4) 2.6.5-7.276 (SLES 9) 2.4.21-40.EL (RHEL 3) 2.6.12.6 vanilla (kernel.org) * bug fixes Severity : major Frequency : rare Bugzilla : 5719, 9635, 9792, 9684 Description: OST (or MDS) trips assertions in (re)connection under heavy load Details : If a server is under heavy load and cannot reply to new connection requests before the client resends the (re)connect, the connection handling code can behave badly if two service threads are concurrently handing separate (re)connections from the same client. Add better locking to the connection handling code, and ensure that only a single connection will be processed for a given client UUID, even if the lock is dropped. Severity : enhancement Bugzilla : 3627 Description: add TCP zero-copy support to kernel Details : Add support to the kernel TCP stack to allow zero-copy bulk sends if the hardware supports scatter-gather and checksumming. This allows socklnd to do client-write and server-read more efficiently and reduce CPU utilization from skbuf copying. Severity : minor Frequency : only if NFS exporting from client Bugzilla : 10258 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file Details : If setting attributes on a file created under NFS that had never been opened it would be possible to oops the client if the file had no objects. Severity : minor Frequency : always for liblustre Bugzilla : 10290 Description: liblustre client does MDS+OSTs setattr RPC for each write Details : When doing a write from a liblustre client, the client incorrectly issued an RPC to the MDS and each OST the file was striped over in order to update the timestamps. When writing with small chunks and many clients this could overwhelm the MDS with RPCs. In all cases it would slow down the write because these RPCs are unnecessary. Severity : enhancement Bugzilla : 9340 Description: allow number of MDS service threads to be changed at module load Details : It is now possible to change the number of MDS service threads running. Adding "options mds mds_num_threads={N}" to the MDS's /etc/modprobe.conf will set the number of threads for the next time Lustre is restarted (assuming the "mds" module is also reloaded at that time). The default number of threads will stay the same, 32 for most systems. Severity : major Frequency : rare Bugzilla : 10300 Description: OST crash if filesystem is unformatted or corrupt Details : If an OST is started on a device that has never been formatted or if the filesystem is corrupt and cannot even mount then the error handling cleanup routines would dereference a NULL pointer. Severity : medium Frequency : rare Bugzilla : 10047 Description: NULL pointer deref in llap_from_page. Details : get_cache_page_nowait can return a page with NULL (or otherwise incorrect) mapping if the page was truncated/reclaimed while it was searched for. Check for this condition and skip such pages when doing readahead. Introduce extra check to llap_from_page() to verify page->mapping->host is non-NULL (so page is not anonymous). Severity : minor Frequency : Sometimes when using sys_sendfile Bugzilla : 7020 Description: "page not covered by a lock" warnings from ll_readpage Details : sendfile called ll_readpage without right page locks present. Now we introduced ll_file_sendfile that does necessary locking around call to generic_file_sendfile() much like we do in ll_file_read(). Severity : medium Frequency : with certain MDS communication failures at client mount time Bugzilla : 10268 Description: NULL pointer deref after failed client mount Details : a client connection request may delayed by the network layer and not be sent until after the PTLRPC layer has timed out the request. If the client fails the mount immediately it will try to clean up before the network times out the request. Add a reference from the request import to the obd device and delay the cleanup until the network drops the request. Severity : medium Frequency : occasionally during client (re)connect Bugzilla : 9387 Description: assertion failure during client (re)connect Details : processing a client connection request may be delayed by the client or server longer than the client connect timeout. This causes the client to resend the connection request. If the original connection request is replied in this interval, the client may trip an assertion failure in ptlrpc_connect_interpret() which thought it would be the only running connect process. Severity : medium Frequency : only with obd_echo servers and clients that are rebooted Bugzilla : 10140 Description: kernel BUG accessing uninitialized data structure Details : When running an obd_echo server it did not start the ping_evictor thread, and when a client was evicted an uninitialized data structure was accessed. Start the ping_evictor in the RPC service startup instead of the OBD startup. Severity : enhancement Bugzilla : 10193 (patchless) Description: Remove dependency on various unexported kernel interfaces. Details : No longer need reparent_to_init, exit_mm, exit_files, sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp. Severity : minor Frequency : rare (only users of deprecated and unsupported LDAP config) Bugzilla : 9337 Description: write_conf for zeroconf mount queried LDAP incorrectly for client Details : LDAP apparently contains 'lustreName' attributes instead of 'name'. A simple remapping of the name is sufficient. Severity : major Frequency : rare (only with non-default dump_on_timeout debug enabled) Bugzilla : 10397 Description: waiting_locks_callback trips kernel BUG if client is evicted Details : Running with the dump_on_timeout debug flag turned on makes it possible that the waiting_locks_callback() can try to dump the Lustre kernel debug logs from an interrupt handler. Defer this log dumping to the expired_lock_main() thread. Severity : enhancement Bugzilla : 10420 Description: Support NFS exporting on 2.6 kernels. Details : Implement non-rawops metadata methods for NFS server to use without changing NFS server code. Severity : medium Frequency : very rare (synthetic metadata workload only) Bugzilla : 9974 Description: two racing renames might cause an MDS thread to deadlock Details : Running the "racer" program may cause one MDS thread to rename a file from being the source of a rename to being the target of a rename at exactly the same time that another thread is doing so, and the second thread has already enqueued these locks after doing a lookup of the target and is trying to relock them in order. Ensure that we don't try to re-lock the same resource. Severity : major Frequency : only very large systems with liblustre clients Bugzilla : 7304 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to all OSTs in parallel. This allows the eviction of stale liblustre clients to proceed much faster than if they were done in series, and also offers similar improvements for other set_info RPCs. Severity : minor Frequency : common Bugzilla : 10265 Description: excessive CPU usage during initial read phase on client Details : During the initial read phase on a client, it would agressively retry readahead on the file, consuming too much CPU and impacting performance (since 1.4.5.8). Improve the readahead algorithm to avoid this, and also improve some other common cases (read of small files in particular, where "small" is files smaller than /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default). Severity : minor Frequency : rare Bugzilla : 10450 Description: MDS crash when receiving packet with unknown intent. Details : Do not LBUG in unknown intent case, just return -EFAULT Severity : enhancement Bugzilla : 9293, 9385 Description: MDS RPCs are serialised on client. This is unnecessary for some. Details : Do not serialize getattr (non-intent version) and statfs. Severity : minor Frequency : occasional, when OST network is overloaded/intermittent Bugzilla : 10416 Description: client evicted by OST after bulk IO timeout Details : If a client sends a bulk IO request (read or write) the OST may evict the client if it is unresposive to its data GET/PUT request. This is incorrect if the network is overloaded (takes too long to transfer the RPC data) or dropped the OST GET/PUT request. There is no need to evict the client at all, since the pinger and/or lock callbacks will handle this, and the client can restart the bulk request. Severity : minor Frequency : Always when mmapping file with no objects Bugzilla : 10438 Description: client crashes when mmapping file with no objects Details : Check that we actually have objects in a file before doing any operations on objects in ll_vm_open, ll_vm_close and ll_glimpse_size. Severity : minor Frequency : Rare Bugzilla : 10484 Description: Request leak when working with deleted CWD Details : Introduce advanced request refcount tracking for requests referenced from lustre intent. Severity : Enhancement Bugzilla : 10482 Description: Cache open file handles on client. Details : MDS now will return special lock along with openhandle, if requested and client is allowed to hold openhandle, even if unused, until such a lock is revoked. Helps NFS a lot, since NFS is opening closing files for every read/write openration. Severity : Enhancement Bugzilla : 9291 Description: Cache open negative dentries on client when possible. Details : Guard negative dentries with UPDATE lock on parent dir, drop negative dentries on lock revocation. Severity : minor Frequency : Always Bugzilla : 10510 Description: Remounting a client read-only wasn't possible with a zconf mount Details : It wasn't possible to remount a client read-only with llmount. Severity : enhancement Description: Include MPICH 1.2.6 Lustre ADIO interface patch Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for MPICH is included to add Lustre-specific ADIO interfaces. This is based closely on the UFS ADIO layer and only differs in file creation, in order to allow the OST striping to be set. This is user-contributed code and not supported by CFS. Severity : minor Frequency : Always Bugzilla : 9486 Description: extended inode attributes (immutable, append-only) work improperly when 2.4 and 2.6 kernels are used on client/server or vice versa Details : Introduce kernel-independent values for these flags. Severity : enhancement Frequency : Always Bugzilla : 10248 Description: Allow fractional MB tunings for lustre in /proc/ filesystem. Details : Many of the /proc/ tunables can only be tuned at a megabyte granularity. Now, Fractional MB granularity is be supported, this is very useful for low memory system. Severity : enhancement Bugzilla : 9292 Description: Getattr by fid Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP locks, avoids extra getattr rpc requests to MDS, allows '/' to have locks and avoids getattr rpc requests for it on every stat. Severity : major Frequency : Always, for filesystems larger than 2TB Bugzilla : 6191 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc Details : Kenrel kmalloc limits allocations to 128kB and this prevents filesystems larger than 2TB to be mounted with mballoc enabled. Severity : critical Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB Bugzilla : 6191 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a filesystems larger than 2TB is mounted then the kernel will silently corrupt the start of the filesystem. CONFIG_LBD is enabled for all CFS-supported kernels, but the possibility of this happening with a modified kernel config exists. Severity : enhancement Bugzilla : 10462 Description: add client O_DIRECT support for 2.6 kernels Details : It is now possible to do O_DIRECT reads and writes to files in the Lustre client mountpoint on 2.6 kernel clients. Severity : enhancement Bugzilla : 10446 Description: parallel glimpse, setattr, statfs, punch, destroy requests Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in parallel, not waiting for response from every OST before sending a rpc to the next OST. Severity : minor Frequency : rare Bugzilla : 10150 Description: setattr vs write race when updating file timestamps Details : Client processes that update a file timestamp into the past right after writing to the file (e.g. tar) it is possible that the updated file modification time can be reset to the current time due to a race between processing the setattr and write RPC. Severity : enhancement Bugzilla : 10318 Description: Bring 'lfs find' closer in line with regular Linux find. Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print, -print0 options and obtains all the needed info through the lustre ioctls. Severity : enhancement Bugzilla : 6221 Description: support up to 1024 configured devices on one node Details : change obd_dev array from statically allocated to dynamically allocated structs as they are first used to reduce memory usage Severity : minor Frequency : rare Bugzilla : 10437 Description: Flush dirty partially truncated pages during truncate Details : Immediatelly flush partially truncated pages in filter_setattr, this way we completely avoid having any pages in page cache on OST and can retire ugly workarounds during writes to flush such pages. Severity : minor Frequency : rare Bugzilla : 10409 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink. Details : protect inode from truncation within vfs_unlink() context just take a reference before calling vfs_unlink() and release it when parent's i_sem is free. Severity : major Frequency : rare Bugzilla : 4778 Description: last_id value checked outside lock on OST caused LASSERT failure Details : If there were multiple MDS->OST object precreate requests in flight, it was possible that the OST's last object id was checked outside a lock and incorrectly tripped an assertion. Move checks inside locks, and discard old precreate requests. Severity : minor Frequency : always, if extents are used on OSTs Bugzilla : 10703 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index Details : OSTs using the extents format would not zero the high 16 bits of the index physical block number. This is not a problem for any OST filesystems smaller than 16TB, and no kernels support ext3 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all new/modified files) and can be fixed for existing filesystems with e2fsprogs-1.39-cfs1. Severity : minor Frequency : rare Bugzilla : 9387 Description: import connection selection may be incorrect if timer wraps Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup import connections to be ignored if the 32-bit jiffies counter wraps. Use a 64-bit jiffies counter. Severity : minor Frequency : very large clusters immediately after boot Bugzilla : 10083 Description: LNET request buffers exhausted under heavy short-term load Details : If a large number of client requests are generated on a service that has previously never seen so many requests it is possible that the request buffer growth cannot keep up with the spike in demand. Instead of dropping incoming requests, they are held in the LND until the RPC service can accept more requests. Severity : minor Frequency : Sometimes during replay Bugzilla : 9314 Description: Assertion failure in ll_local_open after replay. Details : If replay happened on an open request reply before we were able to set replay handler, reply will become not swabbed tripping the assertion in ll_local_open. Now we set the handler right after recognising of open request Severity : trivial Frequency : very rare Bugzilla : 10584 Description: kernel reports "badness in vsnprintf" Details : Reading from the "recovery_status" /proc file in small chunks may cause a negative length in lprocfs_obd_rd_recovery_status() call to vsnprintf() (which is otherwise harmless). Exit early if there is no more space in the output buffer. Severity : enhancement Bugzilla : 2259 Description: clear OBD RPC statistics by writing to them Details : It is now possible to clear the OBD RPC statistics by writing to the "stats" file. Severity : minor Frequency : rare Bugzilla : 10641 Description: Client mtime is not the same on different clients after utimes Details : In some cases, the client was using the utimes() syscall on a file cached on another node. The clients now validate the ctime from the MDS + OSTs to determine which one is right. Severity : minor Frequency : always Bugzilla : 10611 Description: Inability to activate failout mode Details : lconf script incorrectly assumed that in pythong string's numeric value is used in comparisons. Severity : minor Frequency : always with multiple stripes per file Bugzilla : 10671 Description: Inefficient object allocation for mutli-stripe files Details : When selecting which OSTs to stripe files over, for files with a stripe count that divides evenly into the number of OSTs, the MDS is always picking the same starting OST for each file. Return the OST selection heuristic to the original design. Severity : trivial Frequency : rare Bugzilla : 10673 Description: mount failures may take full timeout to return an error Details : Under some heavy load conditions it is possible that a failed mount can wait for the full obd_timeout interval, possibly several minutes, before reporting an error. Instead return an error as soon as the status is known. Severity : major Frequency : quota enabled and large files being deleted Bugzilla : 10707 Description: releasing more than 4GB of quota at once hangs OST Details : If a user deletes more than 4GB of files on a single OST it will cause the OST to spin in an infinite loop. Release quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+. Severity : trivial Frequency : rare Bugzilla : 10845 Description: statfs data retrieved from /proc may be stale or zero Details : When reading per-device statfs data from /proc, in the {kbytes,files}_{total,free,avail} files, it may appear as zero or be out of date. Severity : trivial Frequency : systems with MD RAID1 external journal devices Bugzilla : 10832 Description: lconf's call to blkid is confused by RAID1 journal devices Details : Use the "blkid -l" flag to locate the MD RAID device instead of returning all block devices that match the journal UUID. Severity : normal Frequency : always, for aggregate stripe size over 4GB Bugzilla : 10725 Description: assertion fails when trying to use 4GB stripe size Details : Use "setstripe" to set stripe size over 4GB will fail the kernel, complaining "ASSERTION(lsm->lsm_xfersize != 0)" Severity : normal Frequency : always on ppc64 Bugzilla : 10634 Description: the first write on an ext3 filesystem with mballoc got stuck Details : ext3_mb_generate_buddy() uses find_next_bit() which does not perform endianness conversion. ------------------------------------------------------------------------------ 02-14-2006 Cluster File Systems, Inc. * version 1.4.6 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT INTEROPERATE with older versions automatically. Please read the user documentation before upgrading any part of a live system. * WARNING: Lustre networking configuration changes are required with this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052 for details. * bug fixes * Support for kernels: 2.6.9-22.0.2.EL (RHEL 4) 2.6.5-7.244 (SLES 9) 2.6.12.6 vanilla (kernel.org) Severity : enhancement Bugzilla : 7981/8208 Description: Introduced Lustre Networking (LNET) Details : LNET is new networking infrastructure for Lustre, it includes a reorganized network configuration mode (see the user documentation for full details) as well as support for routing between different network fabrics. Lustre Networking Devices (LNDs) for the supported network fabrics have also been created for this new infrastructure. Severity : enhancement Description: Introduced Access control lists Details : clients can set ACLs on files and directories in order to have more fine-grained permissions than the standard Unix UGO+RWX. The MDS must be started with the "-o acl" mount option. Severity : enhancement Description: Introduced filesystem quotas Details : Administrators may now establish per-user quotas on the filesystem. Severity : enhancement Bugzilla : 7982 Description: Configuration change for the XT3 The PTLLND is now used to run Lustre over Portals on the XT3 The configure option(s) --with-cray-portals are no longer used. Rather --with-portals= is used to enable building on the XT3. In addition to enable XT3 specific features the option --enable-cray-xt3 must be used. Severity : major Frequency : rare Bugzilla : 7407 Description: Running on many-way SMP OSTs can trigger oops in llcd_send() Details : A race between allocating a new llcd and re-getting the llcd_lock allowed another thread to grab newly-allocated llcd. Severity : enhancement Bugzilla : 7116 Description: 2.6 OST async journal commit and locking fix to improve performance Details : The filter_direct_io()+filter_commitrw_write() journal commits for 2.6 kernels are now async as they already were in 2.4 kernels so that they can commit concurrently with the network bulk transfer. For block-allocated files the filter allocation semaphore is held to avoid filesystem fragmentation during allocation. BKL lock removed for 2.6 xattr operations where it is no longer needed. Severity : minor Frequency : rare Bugzilla : 8320 Description: lconf incorrectly determined whether two IP networks could talk Details : In some more complicated routing and multiple-network configurations, lconf will avoid trying to make a network connection to a disjoint part of the IP space. It was doing the math incorrectly for one set of cases. Severity : major Frequency : rare Bugzilla : 7359 Description: Fix for potential infinite loop processing records in an llog. Details : If an llog record is corrupted/zeroed, it is possible to loop forever in llog_process(). Validate the llog record length and skip the remainder of the block on error. Severity : minor Frequency : occasional (liblustre only) Bugzilla : 6363 Description: liblustre could not open files whose last component is a symlink Details : sysio_path_walk() would incorrectly pass the open intent to intermediate path components. Severity : minor Frequency : rare (liblustre only with non-standard tuning) Bugzilla : 7201 (7350) Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT Details : llu_lookup_finish_locks() tries to set lock data on a lock after it has been released, only do this for referenced locks Severity : enhancement Bugzilla : 7328 Description: specifying an (invalid) directory default stripe_size of -1 would reset the directory default striping Details : stripe_size -1 was used internally to signal directory stripe removal, now use "all default" to signal dir stripe removal as a directory striping of "all default" is not useful Severity : minor Frequency : common for large clusters running liblustre clients Bugzilla : 7198 Description: doing an ls when liblustre clients are running is slow Details : sending a glimpse AST to a liblustre client waits for every AST to time out, as liblustre clients will not respond. Since they cannot cache data we refresh the OST lock LVB from disk instead. Severity : enhancement Bugzilla : 7198 Description: doing an ls at the same time as file IO can be slow Details : enqueue and other "small" requests can be blocked behind many large IO requests. Create a new OST IO portal for non-IO requests so they can be processed faster. Severity : minor Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol) Bugzilla : 5781 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly created file with mode 000 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to allow an ftruncate() as a non-root user to a file with mode 000. Lustre now respects this flag to disable mode checks when truncating a file owned by the user Severity : minor Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes busy Bugzilla : 7313 Description: Revoking locks from clients that went dead or catatonic might take a lot of time. Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes cancellation of such locks instant on servers without waiting for any reply from clients. Clients drops these locks when cancel notification from server is received without replying. Severity : minor Frequency : liblustre-only, when liblustre client dies or becomes busy Bugzilla : 7311 Description: Doing ls on Linux clients can take a long time with active liblustre clients Details : Liblustre client cannot handle ASTs in timely manner, so avoid granting such locks to it in the first place if possible. Locks are taken by proxy on the OST during the read or write and dropped immediately afterward. Add connect flags handling, do not grant locks to liblustre clients for glimpse ASTs. Severity : enhancement Bugzilla : 6252 Description: Improve read-ahead algorithm to avoid excessive IO for random reads Details : Existing read-ahead algorithm is tuned for the case of streamlined sequential reads and behaves badly with applications doing random reads. Improve it by reading ahead at least read region, and avoiding excessive large RPC for small reads. Severity : enhancement Bugzilla : 8330 Description: Creating more than 1000 files for a single job may cause a load imbalance on the OSTs if there are also a large number of OSTs. Details : qos_prep_create() uses an OST index reseed value that is an even multiple of the number of available OSTs so that if the reseed happens in the middle of the object allocation it will still utilize the OSTs as uniformly as possible. Severity : major Frequency : rare Bugzilla : 8322 Description: OST or MDS may oops in ping_evictor_main() Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export but doesn't restart at beginning of obd_exports_timed list afterward. Severity : enhancement Bugzilla : 7304 Description: improve by-nid export eviction on the MDS and OST Details : allow multiple exports with the same NID to be evicted at one time without re-searching the exports list. Severity : major Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels Bugzilla : 7273 Description: MDS may oops in groups_free() Details : in rare race conditions a newly allocated group_info struct is freed again, and this can be NULL. The 2.4 compatibility code for groups_free() checked for a NULL pointer, but 2.6 did not. Severity : minor Frequency : common for liblustre clients doing little filesystem IO Bugzilla : 9352, 7313 Description: server may evict liblustre clients accessing contended locks Details : if a client is granted a lock or receives a completion AST with a blocking AST already set it would not reply to the AST for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs. Severity : minor Frequency : lfs setstripe, only systems with more than 160 OSTs Bugzilla : 9440 Description: unable to set striping with a starting offset beyond OST 160 Details : llapi_create_file() incorrectly limited the starting stripe index to the maximum single-file stripe count. Severity : minor Frequency : LDAP users only Bugzilla : 6163 Description: lconf did not handle in-kernel recovery with LDAP properly Details : lconf/LustreDB get_refs() is searching the wrong namespace Severity : enhancement Bugzilla : 7342 Description: bind OST threads to NUMA nodes to improve performance Details : all OST threads are uniformly bound to CPUs on a single NUMA node and do their allocations there to localize memory access Severity : enhancement Bugzilla : 7979 Description: llmount can determine client NID directly from Myrinet (GM) Details : the client NID code from gmnalnid was moved directly into llmount, removing the need to use this or specifying the client NID explicitly when mounting GM clients with zeroconf Severity : minor Frequency : if client is started with down MDS Bugzilla : 7184 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait Details : Having an LWI_INTR() wait event (interruptible, but no timeout) will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after ptlrpc_import_delayed_req() because we didn't check if the request was interrupted, and we also didn't break out of the event loop if there was no timeout Severity : major Frequency : rare Bugzilla : 5047 Description: data loss during non-page-aligned writes to a single file from both multiple nodes and multiple threads on one node at same time Details : updates to KMS and lsm weren't protected by common lock. Resulting inconsistency led to false short-reads, that were cached and later used by ->prepare_write() to fill in partially written page, leading to data loss. Severity : minor Frequency : always, if lconf --abort_recovery used Bugzilla : 7047 Description: lconf --abort_recovery fails with 'Operation not supported' Details : lconf was attempting to abort recovery on the MDT device and not the MDS device Severity : enhancement Bugzilla : 9445 Description: remove cleanup logs Details : replace lconf-generated cleanup logs with lustre internal cleanup routines. Eliminates the need for client-cleanup and mds-cleanup logs. Severity : enhancement Bugzilla : 8592 Description: add support for EAs (user and system) on lustre filesystems Details : it is now possible to store extended attributes in the Lustre client filesystem, and with the user_xattr mount option it is possible to allow users to store EAs on their files also Severity : enhancement Bugzilla : 7293 Description: Add possibility (config option) to show minimal available OST free space. Details : When compiled with --enable-mindf configure option, statfs(2) (and so, df) will return least minimal free space available from all OSTs as amount of free space on FS, instead of summary of free spaces of all OSTs. Severity : enhancement Bugzilla : 7311 Description: do not expand extent locks acquired on OST-side Details : Modify ldlm_extent_policy() to not expand local locks, acquired by server: they are not cached anyway. Severity : major Frequency : when mmap is used/binaries executed from Lustre Bugzilla : 9482 Description: Unmmap pages before throwing them away from read cache. Details : llap_shrink cache now attempts to unmap pages before discarding them (if unmapping failed - do not discard). SLES9 kernel has extra checks that trigger if this unmapping is not done first. Severity : minor Frequency : rare Bugzilla : 6034 Description: lconf didn't resolve symlinks before checking to see whether a given mountpoint was already in use Severity : minor Frequency : when migrating failover services Bugzilla : 6395, 9514 Description: When migrating a subset of services from a node (e.g. failback from a failover service node) the remaining services would time out and evict clients. Details : lconf --force (implied by --failover) sets the global obd_timeout to 5 seconds in order to quickly disconnect, but this caused other RPCs to time out too quickly. Do not change the global obd_timeout for force cleanup, only set it for DISCONNECT RPCs. Severity : enhancement Frequency : if MDS is started with down OST Bugzilla : 9439,5706 Description: Allow startup/shutdown of an MDS without depending on the availability of the OSTs. Details : Asynchronously call mds_lov_synchronize during MDS startup. Add appropriate locking and lov-osc refcounts for safe cleaning. Add osc abort_inflight calls in case the synchronize never started. Severity : minor Frequency : occasional (Cray XT3 only) Bugzilla : 7305 Description: root not authorized to access files in CRAY_PORTALS environment Details : The client process capabilities were not honoured on the MDS in a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously been accessed by an authorized user then root was able to access the file on the local client also. The root user capabilities are now allowed on the MDS, as this environment has secure UID. Severity : minor Frequency : occasional Bugzilla : 6449 Description: ldiskfs "too long searching" message happens too often Details : A debugging message (otherwise harmless) prints too often on the OST console. This has been reduced to only happen when there are fragmentation problems on the filesystem. Severity : minor Frequency : rare Bugzilla : 9598 Description: Division by zero in statfs when all OSCs are inactive Details : lov_get_stripecnt() returns zero due to incorrect order of checks, lov_statfs divides by value returned by lov_get_stripecnt(). Severity : minor Frequency : common Bugzilla : 9489, 3273 Description: First write from each client to each OST was only 4kB in size, to initialize client writeback cache, which caused sub-optimal RPCs and poor layout on disk for the first writen file. Details : Clients now request an initial cache grant at (re)connect time and so that they can start streaming writes to the cache right away and always do full-sized RPCs if there is enough data. If the OST is rebooted the client also re-establishes its grant so that client cached writes will be honoured under the grant. Severity : minor Frequency : common Bugzilla : 7198 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs Details : Now I/O RPCs go to different portal number and (presumably) fast lock requests (and glimses) and other RPCs get their own service threads pool that should be able to service those RPCs immediatelly. Severity : enhancement Bugzilla : 7417 Description: Ability to exchange lustre version between client and servers and issue warnings at client side if client is too old. Also for liblustre clients there is ability to refuse connection of too old clients. Details : New 'version' field is added to connect data structure that is filled with version info. That info is later checked by server and by client. Severity : minor Frequency : rare, liblustre only. Bugzilla : 9296, 9581 Description: Two simultaneous writes from liblustre at offset within same page might proceed at the same time overwriting eachother with stale data. Details : I/O lock withing llu_file_prwv was released too early, before data actually was hitting the wire. Extended lock-holding time until server acknowledges receiving data. Severity : minor Frequency : extremely rare. Never observed in practice. Bugzilla : 9652 Description: avoid generating lustre_handle cookie of 0. Details : class_handle_hash() generates handle cookies by incrementing global counter, and can hit 0 occasionaly (this is unlikely, but not impossible, because initial value of cookie counter is selected randonly). Value of 0 is used as a sentinel meaning "unassigned handle" --- avoid it. Also coalesce two critical sections in this function into one. Severity : enhancement Bugzilla : 9528 Description: allow liblustre clients to delegate truncate locking to OST Details : To avoid overhead of locking, liblustre client instructs OST to take extent lock in ost_punch() on client's behalf. New connection flag is added to handle backward compatibility. Severity : enhancement Bugzilla : 4928, 7341, 9758 Description: allow number of OST service threads to be specified Details : a module parameter allows the number of OST service threads to be specified via "options ost ost_num_threads={N}" in the OSS's /etc/modules.conf or /etc/modprobe.conf. Severity : major Frequency : rare Bugzilla : 6146, 9635, 9895 Description: servers crash with bad pointer in target_handle_connect() Details : In rare cases when a client is reconnecting it was possible that the connection request was the last reference for that export. We would temporarily drop the export reference and get a new one, but this may have been the last reference and the export was just destroyed. Get new reference before dropping old one. Severity : enhancement Frequency : if client is started with failover MDS Bugzilla : 9818 Description: Allow multiple MDS hostnames in the mount command Details : Try to read the configuration from all specified MDS hostnames during a client mount in case the "primary" MDS is down. Severity : enhancement Bugzilla : 9297 Description: Stop sending data to evicted clients as soon as possible. Details : Check if the client we are about to send or are sending data to was evicted already. (Check is done every second of waiting, for which l_wait_event interface was extended to allow checking of exit condition at specified intervals). Severity : minor Frequency : rare, normally only when NFS exporting is done from client Bugzilla : 9301 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files without objects Details : Make mds_get_md() recognise empty md case and set lmm size to 0. Severity : minor Frequency : always, if srand() is called before liblustre initialization Bugzilla : 9794 Description: Liblustre uses system PRNG disturbing its usage by user application Details : Introduce internal to lustre fast and high-quality PRNG for lustre usage and make liblustre and some other places in generic lustre code to use it. Severity : enhancement Bugzilla : 9477, 9557, 9870 Description: Verify that the MDS configuration logs are updated when xml is Details : Check if the .xml configuration logs are newer than the config logs stored on the MDS and report an error if this is the case. Request --write-conf, or allow starting with --old_conf. Severity : enhancement Bugzilla : 6034 Description: Handle symlinks in the path when checking if Lustre is mounted. Details : Resolve intermediate symlinks when checking if a client has mounted a filesystem to avoid duplicate client mounts. Severity : minor Frequency : rare Bugzilla : 9309 Description: lconf can hit an error exception but still return success. Details : The lconf command catches the Command error exception at the top level script context and will exit with the associated exit status, but doesn't ensure that this exit status is non-zero. Severity : minor Frequency : rare Bugzilla : 9493 Description: failure of ptlrpc thread startup can cause oops Details : Starting a ptlrpc service thread can fail if there are a large number of threads or the server memory is very fragmented. Handle this without oopsing. Severity : minor Frequency : always, only if liblustre and non-default acceptor port was used Bugzilla : 9933 Description: liblustre cannot connect to servers with non-default acceptor port Details : tcpnal_set_default_params() was not called and was therefore ignoring the environment varaible TCPNAL_PORT, as well as other TCPNAL_ environment variables Severity : minor Frequency : rare Bugzilla : 9923 Description: two objects could be created on the same OST for a single file Details : If an OST is down, in some cases it was possible to create two objects on a single OST for a single file. No problems other than potential performance impact and spurious error messages. Severity : minor Frequency : rare Bugzilla : 5681, 9562 Description: Client may oops in ll_unhash_aliases Details : Client dcache may become inconsistent in race condition. In some cases "getcwd" can fail if the current directory is modified. Severity : minor Frequency : always Bugzilla : 9942 Description: Inode refcounting problems in NFS export code Details : link_raw functions used to call d_instantiate without obtaining extra inode reference first. Severity : minor Frequency : rare Bugzilla : 9942, 9903 Description: Referencing freed requests leading to crash, memleaks with NFS. Details : We used to require that call to ll_revalidate_it was always followed by ll_lookup_it. Also with revalidate_special() it is possible to call ll_revalidate_it() twice for the same dentry even if first occurence returned success. This fix changes semantic between DISP_ENQ_COMPLETE disposition flag to mean there is extra reference on a request referred from the intent. ll_intent_release() then releases such a request. Severity : minor Frequency : rare, normally benchmark loads only Bugzilla : 1443 Description: unlinked inodes were kept in memory on the client Details : If a client is repeatedly creating and unlinking files it can accumulate a lot of stale inodes in the inode slab cache. If there is no other client load running this can cause the client node to run out of memory. Instead flush old inodes from client cache that have the same inode number as a new inode. Severity : minor Frequency : SLES9 2.6.5 kernel and long filenames only Bugzilla : 9969, 10379 Description: utime reports stale NFS file handle Details : SLES9 uses out-of-dentry names in some cases, which confused the lustre dentry revalidation. Change it to always use the in-dentry qstr. Severity : major Frequency : rare, unless heavy write-truncate concurrency is continuous Bugzilla : 4180, 6984, 7171, 9963, 9331 Description: OST becomes very slow and/or deadlocked during object unlink Details : filter_destroy() was holding onto the parent directory lock while truncating+unlinking objects. For very large objects this may block other threads for a long time and slow overall OST responsiveness. It may also be possible to get a lock ordering deadlock in this case, or run out of journal credits because of the combined truncate+unlink. Solution is to do object truncate first in one transaction without parent lock, and then do the final unlink in a new transaction with the parent lock. This reduces the lock hold time dramatically. Severity : major Frequency : rare, 2.4 kernels only Bugzilla : 9967 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock before unmounting their filesystem in order to avoid deadlock. The kernel_locked() function in 2.4 kernels only checks whether the kernel lock is held, not whether it is this process that is holding it as 2.6 kernels do. Severity : major Frequency : rare Bugzilla : 9635 Description: MDS or OST may oops/LBUG if a client is connecting multiple times Details : The client ptlrpc code may be trying to reconnect to a down server before a previous connection attempt has timed out. Increase the reconnect interval to be longer than the connection timeout interval to avoid sending duplicate connections to servers. Severity : minor Frequency : echo_client brw_test command Bugzilla : 9919 Description: fix echo_client to work with OST preallocated code Details : OST preallocation code (5137) didn't take echo_client IO path into account: echo_client calls filter methods outside of any OST thread and, hence, there is no per-thread preallocated pages and buffers to use. Solution: hijack pga pages for IO. As a byproduct, this avoids unnecessary data copying. Severity : minor Frequency : rare Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574 Description: Client can oops in mdc_commit_close() after open replay Details : It was possible for the MDS to return an open request with no transaction number in mds_finish_transno() if the client was evicted, but without actually returning an error. Clients would later try to replay that open and may trip an assertion Simplify the client close codepath, and always return an error from the MDS in case the open is not successful. Severity : major Frequency : rare, 2.6 OSTs only Bugzilla : 10076 Description: OST may deadlock under high load on fragmented files Details : If there was a heavy load and highly-fragmented OST filesystems it was possible to have all the OST threads deadlock waiting on allocation of biovecs, because the biovecs were not released until the entire RPC IO was completed. Instead, release biovecs as soon as they are complete to ensure forward IO progress. Severity : enhancement Bugzilla : 9578 Description: Support for specifying external journal device at mount Details : If an OST or MDS device is formatted with an external journal device, this device major/minor is stored in the ext3 superblock and may not be valid for failover. Allow detecting and specifying the external journal at mount time. Severity : major Frequency : rare Bugzilla : 10235 Description: Mounting an MDS with pending unlinked files may cause oops Details : target_finish_recovery() calls mds_postrecov() which returned the number of orphans unlinked. mds_lov_connect->mds_postsetup() considers this an error and immediately begins cleaning up the lov, just after starting the mds_lov process Severity : enhancement Bugzilla : 9461 Description: Implement 'lfs df' to report actual free space on per-OST basis Details : Add sub-command 'df' on 'lfs' to report the disk space usage of MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report usage of objects; '-h' to report in human readable format. ------------------------------------------------------------------------------ 08-26-2005 Cluster File Systems, Inc. * version 1.4.5 * bug fixes Severity : major Frequency : rare Bugzilla : 7264 Description: Mounting an ldiskfs file system with mballoc may crash OST node. Details : ldiskfs mballoc code may reference an uninitialized buddy struct at startup during orphan unlinking. Instead, skip buddy update before setup, as it will be regenerated after recovery is complete. Severity : minor Frequency : rare Bugzilla : 7039 Description: If an OST is inactive, its locks might reference stale inodes. Details : lov_change_cbdata() must iterate over all namespaces, even if they are inactive to clear inode references from the lock. Severity : enhancement Frequency : occasional, if non-standard max_dirty_mb used Bugzilla : 7138 Description: Client will block write RPCs if not enough grant Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight, then the client will block writes while waiting for another RPC to complete instead of consuming its dirty limit. With change we get improved performance when max_dirty_mb is small. Severity : enhancement Bugzilla : 3389, 6253 Description: Add support for supplementary groups on the MDS. Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side lookups for user supplementary groups into a cache. Severity : minor Bugzilla : 7278 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST Details : Make libsysio to not enforce O_EXCL by clearing the flag, for liblustre O_EXCL is enforced by MDS. Severity : minor Bugzilla : 6455 Description: readdir never returns NULL in liblustre. Details : Corrected llu_iop_getdirentries logic, to return offset of next dentry in struct dirent. Severity : minor Bugzilla : 7137 Frequency : liblustre only, depends on application IO pattern Description: liblustre clients evicted if not contacting servers Details : Don't put liblustre clients into the ping_evictor list, so they will not be evicted by the pinger ever. Severity : enhancement Bugzilla : 6902 Description: Add ability to evict clients by NID from MDS. Details : By echoing "nid:$NID" string into /proc/fs/lustre/mds/.../evict_client client with nid that equals to $NID would be instantly evicted from this MDS and from all active OSTs connected to it. Severity : minor Bugzilla : 7198 Description: Do not query file size twice, somewhat slowing stat(2) calls. Details : lookup_it_finish() used to query file size from OSTs that was not needed. Severity : minor Bugzilla : 6237 Description: service threads change working directory to that of init Details : Starting lustre service threads may pin the working directory of the parent thread, making that filesystem busy. Threads now change to the working directory of init to avoid this. Severity : minor Bugzilla : 6827 Frequency : during shutdown only Description: shutdown with a failed MDS or OST can cause unmount to hang Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import() if server is down. Severity : minor Bugzilla : 7331 Frequency : 2.6 only Description: chmod/chown may include an extra supplementary group Details : ll{,u}_mdc_pack_op_data() does not properly initialize the supplementary group and if none is specified this is used. Severity : minor Bugzilla : 5479 (6816) Frequency : rare Description: Racing open + rm can assert client in mdc_set_open_replay_data() Details : If lookup is in progress on a file that is unlinked we might try to revalidate the inode and fail in revalidate after lookup is complete and ll_file_open() enqueues the open again but it_open_error() was not checking DISP_OPEN_OPEN errors correctly. Severity : minor Frequency : always, if lconf --abort_recovery used Bugzilla : 7047 Description: lconf --abort_recovery fails with 'Operation not supported' Details : lconf was attempting to abort recovery on the MDT device and not the MDS device ------------------------------------------------------------------------------ 2005-08-08 Cluster File Systems, Inc. * version 1.4.4 * bug fixes Severity : major Frequency : rare (only unsupported configurations with a node running as an OST and a client) Bugzilla : 6514, 5137 Description: Mounting a Lustre file system on a node running as an OST could lead to deadlocks Details : OSTs now preallocates memory needed to write out data at startup, instead of when needed, to avoid having to allocate memory in possibly low memory situations. Specifically, if the file system is mounted on on OST, memory pressure could force it to try to write out data, which it needed to allocate memory to do. Due to the low memory, it would be unable to do so and the node would become unresponsive. Severity : enhancement Bugzilla : 7015 Description: Addition of lconf --service command line option Details : lconf now accepts a '--service ' option, which is shorthand for 'lconf --group --select =' Severity : enhancement Bugzilla : 6101 Description: Failover mode is now the default for OSTs. Details : By default, OSTs will now run in failover mode. To return to the old behaviour, add '--failout' to the lmc line for OSTs. Severity : enhancement Bugzilla : 1693 Description: Health checks are now provided for MDS and OSTs Details : Additional detailed health check information on MSD and OSTs is now provided through the procfs health_check value. Severity : minor Frequency : occasional, depends on IO load Bugzilla : 4466 Description: Disk fragmentation on the OSTs could eventually cause slowdowns after numerous create/delete cycles Details : The ext3 inode allocation policy would not allocate new inodes very well on the OSTs because there are no new directories being created. Instead we look for groups with free space if the parent directories are nearly full. Severity : major Bugzilla : 6302 Frequency : rare Description: Network or server problems during mount may cause partially mounted clients instead of returning an error. Details : The config llog parsing code may overwrite the error return code during mount error handling, returning success instead of an error. Severity : minor Bugzilla : 6422 Frequency : rare Description: MDS can fail to allocate large reply buffers Details : After long uptimes the MDS can fail to allocate large reply buffers (e.g. zconf client mount config records) due to memory fragmentation or consumption by the buffer cache. Preallocate some large reply buffers so that these replies can be sent even under memory pressure. Severity : minor Bugzilla : 6266 Frequency : rare (liblustre) Description: fsx running with liblustre complained that using truncate() to extend the file doesn't work. This patch corrects that issue. Details : This is the liblustre equivalent of the fix for bug 6196. Fixes ATTR_SIZE and lsm use in llu_setattr_raw. Severity : critical Bugzilla : 6866 Frequency : rare, only 2.6 kernels Description: Unusual file access patterns on the MDS may result in inode data being lost in very rare circumstances. Details : Bad interaction between the ea-in-inode patch and the "no-read" code in the 2.6 kernel caused the inode and/or EA data not to be read from disk, causing single-file corruption. Severity : critical Bugzilla : 6998 Frequency : rare, only 2.6 filesystems using extents Description: Heavy concurrent write and delete load may cause data corruption. Details : It was possible under high-load situations to have an extent metadata block in the block device cache from a just-unlinked file overwrite a newly-allocated data block. We now unmap any metadata buffers that alias just-allocated data blocks. Severity : minor Bugzilla : 7241 Frequency : filesystems with default stripe_count larger than 77 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes Details : lconf specifies an inode size of 4096 bytes when the default stripe_count is larger than 77. This conflicts with the default inode density of 1 per 4096 bytes. Allocate smaller inodes in this case to avoid pinning too much memory for large EAs. ------------------------------------------------------------------------------ 2005-07-07 Cluster File Systems, Inc. * version 1.4.3 * bug fixes Severity : minor Frequency : rare (extremely heavy IO load with hundreds of clients) Bugzilla : 6172 Description: Client is evicted, gets IO error writing to file Details : lock ordering changes for bug 5492 reintroduced bug 3267 and caused clients to be evicted for AST timeouts. The fixes in bug 5192 mean we no longer need to have such short AST timeouts so ldlm_timeout has been increased. Severity : major Frequency : occasional during --force or --failover shutdown under load Bugzilla : 5949, 4834 Description: Server oops/LBUG if stopped with --force or --failover under load Details : a collection of import/export refcount and cleanup ordering issues fixed for safer force cleanup Severity : major Frequency : only filesystems larger than 120 OSTs Bugzilla : 5990, 6223 Description: lfs getstripe would oops on a very large filesystem Details : lov_getconfig used kfree on vmalloc'd memory Severity : minor Frequency : only filesystems exporting via NFS to Solaris 10 clients Bugzilla : 6242, 6243 Description: reading from files that had been truncated to a non-zero size but never opened returned no data Details : ll_file_read() reads zeros from no-object files to EOF Severity : major Frequency : rare Bugzilla : 6200 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion Details : There's little harm in aborting MDS/OSS recovery and letting it try again, so I removed the LASSERT and return an error instead. Severity : enhancement Bugzilla : 5902 Description: New debugging infrastructure for tracking down data corruption Details : The I/O checksum code was replaced to: (a) control it at runtime, (b) cover more of the client-side code path, and (c) try to narrow down where problems occurred Severity : major Frequency : rare Bugzilla : 3819, 4364, 4397, 6313 Description: Racing close and eviction MDS could cause assertion in mds_close Details : It was possible to get multiple mfd references during close and client eviction, leading to one thread referencing a freed mfd. Severity: : enhancement Bugzilla : 3262, 6359 Description: Attempts to reconnect to servers are now more aggressive. Details : This builds on the enhanced upcall-less recovery that was added in 1.4.2. When trying to reconnect to servers, clients will now try each server in the failover group every 10 seconds. By default, clients would previously try one server every 25 seconds. Severity : major Frequency : rare Bugzilla : 6371 Description: After recovery, certain operations trigger a failed assertion on a client. Details : Failing over an mds, using lconf -d --failover, while a client was doing a readdir() call would cause the client to LBUG after recovery completed and the readdir() was resent. Severity : enhancement Bugzilla : 6296 Description: Default groups are now added by lconf Details : You can now run lconf --group without having to manually add groups with lmc. Severity : major Frequency : occasional Bugzilla : 6412 Description: Nodes with an elan id of 0 trigger a failed assertion Severity : minor Frequency : always when accessing e.g. tty/console device nodes Bugzilla : 3790 Description: tty and some other devices nodes cannot be used on lustre Details : file's private_data field is used by device data and lustre values in there got lost. New field was added to struct file to store fs-specific private data. Severity : minor Frequency : when exporting Lustre via NFS Bugzilla : 5275 Description: NFSD failed occasionally when looking up a path component Details : NFSD is looking up ".." which was broken in ext3 directories that had grown large enough to become hashed. Severity : minor Frequency : Clusters with multiple interfaces not on the same subnet Bugzilla : 5541 Description: Nodes will repeatedly try to reconnect to an interface which it cannot reach and report an error to the log. Details : Extra peer list entries will be created by lconf with some peers unreachable. lconf now validates the peer before adding it. Severity : major Frequency : Only if a default stripe is set on the filesystem root. Bugzilla : 6367 Description: Setting a default stripe on the filesystem root prevented the filesystem from being remounted. Details : The client was sending extra request flags in the root getattr request and did not allocate a reply buffer for the dir EA. Severity : major Frequency : occasional, higher if lots of files are accessed by one client Bugzilla : 6159, 6097 Description: Client trips assertion regarding lsm mismatch/magic Details : While revalidating inodes the VFS looks up inodes with ifind() and in rare cases can find an inode that is being freed. The ll_test_inode() code will free the lsm during ifind() when it finds an existing inode and then the VFS later attaches this free lsm to a new inode. Severity : major Frequency : rare Bugzilla : 6422, 7030 Description: MDS deadlock between mkdir and client eviction Details : Creating a new file via mkdir or mknod (starting a transaction and getting the ns lock) can deadlock with client eviction (gets ns lock and trying to finish a synchronous transaction). Severity : minor Frequency : occasional Description: While starting a server, the fsfilt_ext3 module could not be loaded. Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6 kernels. Previously, lconf would still use the ext3 name when trying to load modules. Now, it will correctly use ext3 on 2.4 and ldiskfs on 2.6. Severity : enhancement Description: The default stripe count has been changed to 1 Details : The interpretation of the default stripe count (0, to lfs or lmc) has been changed to mean striping across a single OST, rather than all available. For general usage we have found a stripe count of 1 or 2 works best. Severity : enhancement Description: Add support for compiling against Cray portals. Details : Conditional compiling for some areas that are different on Cray Portals. Severity : major Frequency : occasional Bugzilla : 6409, 6834 Description: Creating files with an explicit stripe count may lead to a failed assertion on the MDS Details : If some OSTs are full or unavailable, creating files may trigger a failed assertion on the MDS. Now, Lustre will try to use other servers or return an error to the client. Severity : minor Frequency : occasional Bugzilla : 6469 Description: Multiple concurrent overlapping read+write on multiple SMP nodes caused lock timeout during readahead (since 1.4.2). Details : Processes doing readahead might match a lock that hasn't been granted yet if there are overlapping and conflicting lock requests. The readahead process waits on ungranted lock (original lock is CBPENDING), while OST waits for that process to cancel CBPENDING read lock and eventually evicts client. Severity : enhancement Bugzilla : 6931 Description: Initial enabling of flock support for clients Details : Implements fcntl advisory locking and file status functions. This feature is provided as an optional mount flag (default off), and is NOT CURRENTLY SUPPORTED. Not all types of record locking are implemented yet, and those that are are not guaranteed to be completely correct in production environments. mount -t lustre -o [flock|noflock] ... Severity : major Frequency : occasional Bugzilla : 6198 Description: OSTs running 2.4 kernels but with extents enabled might trip an assertion in the ext3 JBD (journaling) layer. Details : The b_committed_data struct is protected by the big kernel lock in 2.4 kernels, serializing journal_commit_transaction() and ext3_get_block_handle->ext3_new_block->find_next_usable_block() access to this struct. In 2.6 kernels there is finer grained locking to improve SMP performance of the JBD layer. Severity : minor Bugzilla : 6147 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled" Severity : Minor Frequency : Rare Bugzilla : 11248 Description: merge and cleanup kernel patches. Details : ----------------------------------------------------------------------------- 2005-05-05 Cluster File Systems, Inc. * version 1.4.2 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous versions of Lustre. Please update all servers and clients to version 1.4.2 or later at the same time. You must also run "lconf --write-conf {config}.xml" on the MDS while it is stopped to update the configuration logs. * bug fixes - fix for HPUX NFS client breakage when NFS exporting Lustre (5781) - mdc_enqueue does not need max_mds_easize request buffer on send (5707) - swab llog records of type '0' so we get proper header size/idx (5861) - send llog cancel req to DLM cancel portal instead of cb portal (5515) - fix rename of one directory over another leaking an inode (5953) - avoid SetPageDirty on 2.6 (5981) - don't re-add just-being-destroyed locks to the waiting list (5653) - when creating new directories, inherit the parent's custom striping settings if present parent (3048) - flush buffers from cache before direct IO in 2.6 obdfilter (4982) - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077) - don't hold client locks on temporary worklist from l_lru (5666) - handle IO errors in 2.6 obdfilter bio completion routine (6046) - automatically evict dead clients (5921) - Update file size properly in create+truncate+fstat case (6196) - Do not unhash mountpoint dentries, do not allow removal of mountpoints (5907) - Avoid lock ordering deadlock issue with write/truncate (6203,5654) - reserve enough journal credits in fsfilt_start_log for setattr (4554) - ldlm_enqueue freed-export error path would always LBUG (6149,6184) - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170) - don't overwrite last_rcvd if there is a *_client_add() error (6086) - Correctly handle reads of files with no objects (6243) - lctl recover will also mark a device active if deactivate used (5933) * miscellania - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs - allow --write-conf on an MDS with different nettype than client (5619) - don't write config llogs to MDS for mounts not from that MDS (5617) - lconf should create multiple TCP connections from a client (5201) - init scripts are now turned off by default; run chkconfig --on lustre and chkconfig --on lustrefs to use them - upcalls are no longer needed for clients to recover to failover servers (3262) - add --abort-recovery option to lconf to abort recovery on device startup (6017) - add support for an arbitrary number of OSTs (3026) - Quota support protocol changes. - forward compatibility changes to wire structs (6007) - rmmod NALs that might be loaded because of /etc/modules.conf (6133) - support for mountfsoptions and clientoptions to the Lustre LDAP (5873) - improved "lustre status" script - initialize blocksize for non-regular files (6062) - added --disable-server and --disable-client configure options (5782) - introduce a lookup cache for lconf to avoid repeated DB scans (6204) - Vanilla 2.4.29 support - increase maximum number of obd devices to 520 (6242) - remove the tcp-zero-copy patch from the suse-2.4 series (5902) - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and SLES 9 2.6.5 kernels - limit stripes per file to 160 (the maximum EA size) (6093) 2005-03-22 Cluster File Systems, Inc. * version 1.4.1 * bug fixes - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760) - hold NS lock when calling handle_ast_error->del_waiting_lock (5746) - fix setattr mtime regression from lovcleanup merge (4829, 5669) - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210) - small ext3 extents cleanups and fixes (5733) - improved mballoc code, several small races and bugs fixed (5733, 5638) - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695) - avoid needless client->OST connect, fix handle mismatch (5317) - fix DLM error path that led to out-of-sync client, long delays (5779) - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637) - fix several locking issues related to i_size (5492,5624,5654,5672) - don't move pending lock onto export if it is already evicted (5683) - fix kernel oops when creating .foo in unlinked directory (5548) - fix deadlock in obdfilter statistics vs. object create (5811) - use time_{before,after} to avoid timer jiffies wrap (5882) - shutdown --force/--failover stability (3607,3651,4797,5203,4834) - Do not leak request if server was not able to process it (5154) - If mds_open unable to find parent dir, make that negative lookup(5154) - don't create new directories with extent-mapping (5909, 5936) * miscellania - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702) - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import - change obd_increase_kms to obd_adjust_kms (up or down) (5654) - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800) - support for RHEL4 kernel on i686 (5773) - provide error messages when incompatible logs are encountered (5898) 2005-02-18 Cluster File Systems, Inc. * version 1.4.0.10 (1.4.1 release candidate 1) * bug fixes - don't keep a lock reference when lock is not granted (4238) - unsafe list practices (rarely) led to infinite eviction loop (4908) - add per-fs limit of Lustre pages in page cache, avoid OOM (4699) - drop import inflight refcount on signal_completed_replay error (5255) - unlock page after async write error during send (3677) - handle missing objects in filter_preprw_read properly (5265) - no transno return for symlink open, don't save no-trasno open (3440) - don't try to complete elan receive that already failed (4012) - free RPC server reply state on error (5406) - clean up thread from ptlrpc_start_thread() on error (5160) - readahead could read extra page into cache that wasn't ejected (5388) - prevent races in class_attach/setup/cleanup/detach (5260) - don't dereference de->d_inode after l_dput of de (5458) - use "int" for stripe value returned from lock_to_stripe (5544) - mballoc allocation and error-checking fixes in 2.6 (5504) - block device patches to fix I/O request sizes in 2.6 (5482) - look up hostnames for IB nals (5602) - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654) - don't start multiple acceptors for the same port (5277) - fix incorrect LASSERT in mds_getattr_name (5635) - export a proc file for general "ping" checking (5628) - fix "lfs check" to not block when the MDS is down (5628) * miscellania - service request history (4965) - put {ll,lov,osc}_async_page structs in a single slab (4699) - create an "evict_client" /proc entry on OSTs, like the MDS has - fix mount usage message, return errors per mount(8) (5168) - change grep [] to grep "[]" in tests so they work in more UMLs - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389) - remove ancient LOV_MAGIC_V0 EA support (5047) - add "disk I/Os in flight" and "I/O req time" stats in obdfilter - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451) - allow readahead allocations to fail when low on memory (5383) - mmap locking landed again, after considerable improvement (2828) - add get_hostaddr() to lustreDB.py for LDAP support (5459) 2004-11-23 Cluster File Systems, Inc. * version 1.4.0 * bug fixes - send OST transaction number in read/write reply to free req (4966) - don't ASSERT in ptl_send_rpc() if we run out of memory (5119) - lock /proc/sys/portals/routes internal state, avoiding oops (4827) - the watchdog thread now runs as interruptible (5246) - flock/lockf fixes (but it's still disabled, pending 5135) - don't use EXT3 constants in llite code (5094) - memory shortage at startup could cause assertion (5176) * miscellania - reorganization of lov code - single portals codebase - Infiniband NAL - add extents/mballoc support (5025) - direct I/O reads in the obdfilter (4048) - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec) tbd Cluster File Systems, Inc. * version 1.2.9 * bug fixes - send OST transaction number in read/write reply to free req (4966) - don't ASSERT in ptl_send_rpc() if we run out of memory (5119) - lock /proc/sys/portals/routes internal state, avoiding oops (4827) - the watchdog thread now runs as interruptible (5246) - handle missing objects in filter_preprw_read properly (5265) - unsafe list practices (rarely) led to infinite eviction loop (4908) - drop import inflight refcount on signal_completed_replay error (5255) - unlock page after async write error during send (3677) - return original error code on reconstructed replies (3761) - no transno return for symlink open, don't save no-trasno open (3440) * miscellania - add pid to ldlm debugging output (4922) - bump the watchdog timeouts -- we can't handle 30sec yet - extra debugging for orphan dentry/inode bug (5259) 2004-11-16 Cluster File Systems, Inc. * version 1.2.8 * bug fixes - fix TCP_NODELAY bug, which caused extreme perf regression (5134) - allocate qswnal tx descriptors singly to avoid fragmentation (4504) - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800) - fix NULL dereference in /proc/sys/portals/routes (4827) - allow failed mdc_close() operations to be interrupted (4561) - stop precreate on OST before MDS would time out on it (4778) - don't send partial-page writes before EOF from client (4410) - discard client grant for sub-page writes on large-page clients (4520) - don't free dentries not owned by NFS code, check generation (4806) - fix lsm leak if mds_create_objects() fails (4801) - limit debug_daemon file size, always print CERROR messages (4789) - use transno after validating reply (3892) - process timed out requests if import state changes (3754) - update mtime on OST during writes, return in glimpse (4829) - add mkfsoptions to LDAP (4679) - use ->max_readahead method instead of zapping global ra (5039) - don't interrupt __l_wait_event() during strace * miscellania - add software watchdogs to catch hung threads quickly (4941) - make lustrefs init script start after nfs is mounted - fix CWARN/ERROR duplication (4930) - return async write errors to application if possible (2248) - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC) - print NAL number in %x format (4645) - update barely-supported suse-2.4.21-171 series (4842) - support for sles 9 %post scripts - support for building 2.6 kernel-source packages - support for sles km_* packages 2004-10-07 Cluster File Systems, Inc. * version 1.2.7 * bug fixes - ignore -ENOENT errors in osc_destroy (3639) - notify osc create thread that OSC is being cleaned up (4600) - add nettype argument for llmount in #5d in conf-sanity.sh (3936) - reconstruct ost_handle() like mds_handle() (4657) - create a new thread to do import eviction to avoid deadlock (3969) - let lconf resolve symlinked-to devices (4629) - don't unlink "objects" from directory with default EA (4554) - hold socknal file ref over connect in case target is down (4394) - allow more than 32000 subdirectories in a single directory (3244) - fix blocks count for O_DIRECT writes (3751) - OST returns ENOSPC from object create when no space left (4539) - don't send truncate RPC if file size isn't changing (4410) - limit OSC precreate to 1/2 of value OST considers bogus (4778) - bind to privileged port in socknal and tcpnal (3689) * miscellania - rate limit CERROR/CWARN console message to avoid overload (4519) - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327) - basic mmap support (3918) - kernel patch series update from b1_4 (4711) 2004-09-16 Cluster File Systems, Inc. * version 1.2.6 * bug fixes - avoid crash during MDS cleanup with OST shut down (2775) - fix loi_list_lock/oig_lock inversion on interrupted IO (4136) - don't use bad inodes on the MDS (3744) - dynamic object preallocation to improve recovery speed (4236) - don't hold spinlock over lock dumping or change debug flags (4401) - don't zero obd_dev when it is force cleaned (3651) - print grants to console if they go negative (4431) - "lctl deactivate" will stop automatic recovery attempts (3406) - look for existing locks in ldlm_handle_enqueue() (3764) - don't resolve lock handle twice in recovery avoiding race (4401) - revalidate should check working dir is a directory (4134) * miscellania - don't always mark "slow" obdfilter messages as errors (4418) 2004-08-24 Cluster File Systems, Inc. * version 1.2.5 * bug fixes - don't close LustreDB during write_conf until it is done (3860) - fix typo in lconf for_each_profile (3821) - allow dumping logs from multiple threads at one time (3820) - don't allow multiple threads in OSC recovery (3812) - fix debug_size parameters (3864) - fix mds_postrecov to initialize import for llog ctxt (3121) - replace config semaphore with spinlock (3306) - be sure to send a reply for a CANCEL rpc with bad export (3863) - don't allow enqueue to complete on a destroyed export (3822) - down write_lock before checking llog header bitmap (3825) - recover from lock replay timeout (3764) - up llog sem before sending rpc (3652) - reduce ns lock hold times when setting kms (3267) - change a dlm LBUG to LASSERTF, to maybe learn something (4228) - fix NULL deref and obd_dev leak on setup error (3312) - replace some LBUG about llog ops with error handling (3841) - don't match INVALID dentries from d_lookup and spin (3784) - hold dcache_lock while marking dentries INVALID and hashing (4255) - fix invalid assertion in ptlrpc_set_wait (3880) * miscellania - add libwrap support for the TCP acceptor (3996) - add /proc/sys/portals/routes for non-root route listing (3994) - allow setting MDS UUID in .xml (2580) - print the stack of a process that LBUGs (4228) 2004-07-14 Cluster File Systems, Inc. * version 1.2.4 * bug fixes - don't cleanup request in ll_file_open() on failed MDS open (3430) - make sure to unset replay flag from failed open requests (3440) - if default stripe count is 0, use OST count for inode size (3636) - update parent mtime/ctime on client for create/unlink (2611) - drop dentry ref in ext3_add_link from open_connect_dentry (3266) - free recovery state on server during a forced cleanup (3571) - unregister_reply for resent reqs (3063) - loop back devices mounting and status check on 2.6 (3563) - fix resource-creation race that can provoke i_size == 0 (3513) - don't try to use bad inodes returned from MDS/OST fs lookup (3688) - more debugging for page-accounting assertion (3746) - return -ENOENT instead of asserting if ost getattr+unlink race (3558) - avoid deadlock after precreation failure (3758) - fix race and lock order deadlock in orphan handling (3450, 3750) - add validity checks when grabbing inodes from l_ast_data (3599) * miscellania - add /proc/.../recovery_status to obdfilter (3428) - lightweight CDEBUG infrastructure, debug daemon (3668) - change default OSC RPC parameters to be better on small clusters - turn off OST read cache for files smaller than 32MB - install man pages and include them in rpms (3100) - add new init script for (un)mounting lustre filesystems (2593) - run chkconfig in %post for init scripts (3701) - drop scimac NAL (unmaintained) 2004-06-17 Cluster File Systems, Inc. * version 1.2.3 * bug fixes - clean kiobufs before and after use (3485) - strip trailing '/'s before comparing paths with /proc/mounts (3486) - remove assertions to work around "in-flight rpcs" recovery bug (3063) - change init script to fail more clearly if not run as root (1528) - allow clients to reconnect during replay (1742) - fix ns_lock/i_sem lock ordering deadlock for kms update (3477) - don't do DNS lookups on NIDs too small for IP addresses (3442) - re-awaken ptlrpcd if new requests arrive during check_set (3554) - fix cond_resched (3554) - only evict unfinished clients after recovery (3515) - allow bulk resend, prevent data loss (3570) - dynamic ptlrpc request buffer allocation (2102) - don't allow unlinking open directory if it isn't empty (2904) - set MDS/OST threads to umask 0 to not clobber client modes (3359) - remove extraneous obd dereference causing LASSERT failure (3334) - don't use get_cycles() when creating temp. files on the mds (3156) - hold i_sem when setting i_size in ll_extent_lock() (3564) - handle EEXIST for set-stripe, set proper directory name (3336) * miscellania - servers can dump a log evicting a client - lustre.dump_on_timeout=1 - fix ksocknal_fmb_callback() error messages (2918) 2004-05-27 Cluster File Systems, Inc. * version 1.2.2 * bug fixes - don't copy lvb into (possibly NULL) reply on error (2983) - don't deref dentry after dput, don't free lvb on error (2922) - use the kms to determine writeback rpc length (2947) - increment oti_logcookies when osc is inactive (2948) - update client's i_blocks count via lvb messages (2543) - handle intent open/close of special files properly (1557) - mount MDS with errors=remount-ro, like obdfilter (2009) - initialize lock handle to avoid ASSERT on error cleanup (3057) - don't use cancelling-locks' kms values (2947) - use highest lock extent for kms, not last one (2925) - don't dereference ERR_PTR() dentry in error handling path (3107) - fix thread race in portals_debug_dumplog() (3122) - create lprocfs device entries at setup instead of at attach (1519) - common AST error handler, don't evict client on completion race (3145) - zero nameidata in detach_mnt in 2.6 (3118) - verify d_inode after revalidate_special is valid in 2.6 (3116) - use lustre_put_super() to handle zconf unmounts in 2.6 (3064) - initialize RPC timeout timer earlier for 2.6 (3219) - don't dereference NULL reply buffer if mdc_close was never sent (2410) - print nal/nid for unknown nid (3258) - additional checks for oscc recovery before doing precreate (3284) - fix ll_extent_lock() error return code for 64-bit systems (3043) - don't crash in mdc_close for bad permissions on open (3285) - zero i_rdev for non-device files (3147) - clear page->private before handing to FS, better assertion (3119) - tune the read pipeline (3236) - fix incorrect decref of invalidated dentry (2350) - provide read-ahead stats and refine rpc in flight stats (3328) - don't hold journal transaction open across create RPC (3313) - update atime on MDS at close time (3265) - close LDAP connection when recovering to avoid server load (3315) - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301) - don't leak open file on MDS after open resend (3325) - serialize filter_precreate and filter_destroy_precreated (3329) - loop device shouldn't call sync_dev() for nul device (3092) - clear page cache after eviction (2766) - resynchronize MDS->OST in background (2824) - refuse to mount the same filesystem twice on same mountpoint (3394) - allow llmount to create routes for mounting behind routers (3320) - push lock cancellation to blocking thread for glimpse ASTs (3409) - don't call osc_set_data_with_check() for TEST_LOCK matches (3159) - fix rare problem with rename on htree directories (3417) * miscellania - allow default OST striping configuration per directory (1414) - fix compilation for qswnal for 2.6 kernels (3125) - increase maximum number of MDS request buffers for large systems - change liblustreapi to be useful for external progs like lfsck (3098) - increase local configuration timeout for slow disks (3353) - allow configuring ldlm AST timeout - lustre.ldlm_timeout= 2004-03-22 Cluster File Systems, Inc. * version 1.2.1 * bug fixes - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818) - don't overwrite extent policy data in reply if lock was blocked (2901) - drop filter export grants atomically with removal from device (2663) - del obd_self_export from work_list in class_disconnect_exports (2908) - don't LBUG if MDS recovery times out during orphan cleanup (2530) - swab reply message in mdc_close, other PPC fixes (2464) - fix destroying of named logs (2325) - overwrite old logs when running lconf --write_conf (2264) - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306) - fix race in target_handle_connect (2898) - mds_reint_create() should take same inode create lock (2926) - correct journal credits calculated for CANCEL_UNLINK_LOG (2931) - don't close files for self_export to avoid uninitialized obd (2936) - allow MDS with the same name as client node (2939) - hold dentry reference for closed log files for unlink (2325) - reserve space for all logs during transactions (2059) - don't evict page beyond end of stripe extent (2925) - don't oops on a deleted current working directory (2399) - handle hard links to targets without a parent properly (2517) - don't dereference NULL lock when racing during eviction (2867) - don't grow lock extents when lots of conflicting locks (2919) 2004-03-04 Cluster File Systems, Inc. * version 1.2.0 * bug fixes - account for cache space usage on clients to avoid data loss (974) - lfsck support in lustre kernel code (2349) - reduce journal credits needed for BRW writes (2370) - orphan handling to avoid losing space on client/server crashes - ptlrpcd can be blocked, stopping ALL progress (2477) - use lock value blocks to assist in proper KMS, faster stat (1021) - takes i_sem instead of DLM locks internally on obdfilter (2720) - recovery for initial connections (2355) - fixes for mds_cleanup_orphans (1934) - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584) - block all file creations until orphan recovery completes (1901) - client remove rq_connection from request struct (2423) - conf-sanity test_5, proper cleanup in umount log not availale (2640) - recovery timer race (2670) - mdc_close recovey bug (2532) - ptlrpc cleanup bug (2710) - mds timeout on local locks (2588) - namespace lock held during RPCs (2431) - handle interrupted sync write properly (2503) - don't try to handle a message that hasn't been replied to (2699) - client assert failure during cleanup after abort recovery (2701) - leak mdc device after failed mount (2712) - ptlrpc_check_set allows timedout requests to complete (2714) - wait for inflight reqs when ptlrpcd finishes (2710) - make sure unregistered services are removed from the srv_list - reset bulk XID's when resending them (caught by 1138 test) - unregister_bulk after timeout - fix lconf error (2694) - handle write after unfinished setstripe, stripe-only getstripe (2388) - readahead locks pages, leaves pending causing memory pressure (2673) - increase OST request buffers to 4096 on large machines (2729) - fix up permission of existing directories in simple_mkdir (2661) - init deleted item, add assertions ptlrpc_abort_inflight() (2725) - don't assign transno to errored transactions (2742) - don't delete objects on OST if given a bogus objid from MDS (2751) - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777) - if rq_no_resend, then timeout request after recovery (2432) - fix MDS llog_logid record size, 64-bit array alignment (2733) - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773) - put magic in mount.lustre data, check for bad/NULL mount data (2529) - MDS recovery shouldn't delete objects that it has given out (2730) - if enqueue arrives after completion, don't clobber LVB (2819) - don't unlock pages twice when trigger_group_io returns error (2814) - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822) - don't write pages to disk if there was an error (1450) - don't ping imports that have recovery disabled (2676) - take buffered bytes into account when balancing socknal conn (2817) - hold a DLM lock over readdir always, use truncate_inode_pages (2706) - reconnect unlink llog connection after MDS reconnects to OST (2816) - remove little-endian swabbing of llog records (1987) - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884) - retry reposting request buffers if they fail (1191) - grow extent at grant time to avoid granting a revoked lock (2809) - lock revoke doesn't evict page if covered by a second lock (2765) - disable VM readahead to avoid reading outside lock extents (2805) * miscellania - return LL_SUPER_MAGIC from statfs for the filesystem type (1972) - updated kernel patches for hp-2.4.20 kernel (2681) 2004-02-07 Cluster File Systems, Inc. * version 1.0.4 * kernel patches - fix truncated write corruption (2366) - fix for failed assertion in iopen_connect_dentry (1792,2517) * bug fixes - don't flag the ptlrpcd thread with PF_MEMALLOC (2636) - ensure len(uuid) < 37 in lmc (1171) - fix ia64 OOPS in llog_test (2255) - zero end of page at obdfilter for partial page writes (2648) - don't leave stale dentries around after renames (bug 2428) - fix timeouts when evicting a client with a single lock held (2642) - set deadline for the initial HELLO message to drain (2634) - print out dotted-quad IP addresses in the socknal (2302) * miscellania - additional debugging for MDS client eviction problem (2443) - fix mkfsoptions support for osts (2603, 2604) 2004-01-27 Cluster File Systems, Inc. * version 1.0.3 * kernel patches - add series for the vanilla 2.6.0 kernel - add series for the vanilla 2.4.24 kernel - add series for a cray x86/64 UL kernel drop - fix xattr patches for the vanilla 2.4.19 series * bug fixes - generate true UUIDs in lmc (1171) - have portals stack dumping break in UML (2466) - avoid bad dchild deref; avoid inum lock w/o creation (2362) - allocate with _NOFS in ldlm to avoid deadlock (1933) - wake callback waiting threads on client eviction (2460) - Add --ptldebug and --subsystem to lmc (1719) - update assertion to allow safe interrupt allocation - set rq_no_resend for cancel requests (2432) - recalculate ptlrpcd timeout after resend (2494) - call vfs_rmdir when removing pending directories (2368) - fix renaming a file to itself (2429) - lmc creates a default one-stripe lov (2454) - expand procfs space to handle large clusters (2326) - increase UML stack to avoid overflow - update lconf's list of debug and subsystem masks - fix lfs find --obd (2510) - /proc tunable for disabling filter read caching (2591) - stop rpm packages from altering slapd.conf (2301) - disable nagle in the socknal under 0conf (2578) - choose mds inode size based on stripe count (2572) - fix kernel-source rpm problems (2516) * miscellania - add --disable-doc to avoid pdf generation (2421) - update documentation, tests, type-os, comments - avoid format warnings on ia64 - remove the TOE NAL - tiny code cleanups by removing unused fields 2004-01-07 Cluster File Systems, Inc. * version 1.0.2 * bug fixes - fix obvious semaphore misuse in as-yet-unused setattr path (2348) - remove the most blatant lies from BUILDING file (2371) - change default debug level to reasonable production setting - reduce client side cache size to reduce cache flush time - reduce max RPCs in flight to avoid unnecessary file fragmentation - make TCP zerocopy and pinger support enabled by default (2476) - sync writes completed after process exits caused crashes (2319) - maintain correct mount count on the MDS (2356) - backout 1557, because 2316 wasn't really fixed - better file I/O statistics gathering in /proc - don't take unnecessary, deadlock-inducing bug in readpage (2383) - another kernel patch to fix zero-copy TCP function export - don't take duplicate lock when processing re-sent getattr (2420) - lctl uses obd_self_export instead of creating new conn (2353) - MDS/OST recovery case which requires object creation asserted (2425) - move lfs from /usr/sbin to /usr/bin in packages - fix race between mds_client_add and mds_client_free (2417) - use kmalloc instead of slabs in portals (2430) - don't create duplicate records when a failover MDS is present (2442) - remove unnecessary mount age check (2332) - don't remove directory inodes from locks prematurely (2451) - don't break if MDS service name is the same as hostname (2103) - fix races in client write RPC generation when cache full (2482) 2003-12-13 Cluster File Systems, Inc. * version 1.0.1 * bug fixes - remove now-unused request->rq_obd (278) - if an allocation fails, print out how much memory we've used (1933) - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933) - add the "configurable stack size" patch to most series files (1256) - ability to write large log records, for 100+ OST configs (2306) - fix NULL deref when filter_prep fails (2314) - fix operator precedence error in filter_sync - dynamic allocation of socknal TX descriptors (2315) - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310) - fix gcc 2.96 compilation problem in xattr kernel patch (2294) - ensure that CWARN messages in Portals always get to the syslog - __init/__exit are not for prototype decls (ldlm_init/exit) - x86-64 compile warning fixes - fix gateway LMC keyword conflict (2318) - fix MDS lock inversions in getattr/reint paths (1844) - fix a rare lock re-ordering bug, which caused deadlock (2322) - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306) - DLM race condition prevented some lock evictions (2328) - ENOMEM detection and retry on socknal sends (2230) - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230) - move osc_rpcd into ptlrpc, for use in MDC and others (2329) - protect MDS inode fsdata with stronger locking; fixes assertion (2313) - better error messages when a client is rejected during recovery (1505) - avoid cancelling locks which were never granted, after failure (2330) - fix i_sem/journal inversion in mds_client_add (2333) - fix truncate/getattr lock cycle deadlock (2334) - use rpcd to send close; allows resend after timeout, avoid leak (1897) - fix two rare exit paths which could leak an l_lock() ref (2321) - fencepost error in MDS/OST orphan recovery (2226) - make log record alignment 8 bytes (1988) - lstripe now fails when requested offset > ost_count (2237) - ensure that all kernel series have a complete list.h (1607) - fix crashes in special-file operations (2316) - lctl create/brw OID mismatch, caused by obsolete filter loop (2339) * miscellania - allow configurable automake binary, for testing new versions - small update to the lfs documentation 2003-12-03 Cluster File Systems, Inc. * version 1.0.0 * fix negative export reference count in fsfilt_sync (2312) 2003-12-01 Cluster File Systems, Inc. * release candidate 0.9.1 * bug fixes - orphans are moved into the PENDING directory for possible recovery - replayed opens now open by fid for orphan/rename safety (1042) - last close of an orphan inode generates a transno (683) - chdir() and mount() now pin the directory entry (1020) - avoid CERROR in normal ll_setattr_raw() error case (1500) - discard very old requests without processing them (1502) - remove some common, well-understood CERRORs (1505) - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609) - clear "grant" flags in OST replies until OST grant code lands (1644) - fix read performance by not clobbering i_blksize on client (1598) - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625) - make LRU size a /proc tunable, clears locks when reduced (707) - fix some lprocfs rot that prevented ptlbd from loading (1732) - server locks take references on exports now (1558) - build fixes for 2.4.20-rh trees (1663) - return an error from lov_create if all OSCs are inactive (1751) - fix import levels when a reconnect happens without a timeout (1597) - exit early from mds_open if we get a lookup error (1749) - partial page read at EOF wouldn't wait for disk before sending (1642) - avoid NULL deref in obdfilter when reading page past EOF (1592) - avoid LASSERT in ll_intent_lock if server failed very early (1090) - fix LBUG in ll_it_open_error with rc = -2 (1861) - write/truncate lock inversion (1639) - Don't auto-load obdclass, portals modules during cleanup (1495) - fix timestamps from jumping to "now" (1763) - extra journal assertions (1648) - add an extra multiunlink test (1771) - fix read_record/write_record API (1776) - fix leak of offset_extent, possible incorrect i_size later (1772) - fix lasserts in mis-matched transnos during open-unlink testing (1541) - Debugging for the kqswnal_get_idle_tx problems (1820) - Allow recovery to be attempted multiple times (1536) - Write out MDS last_rcvd file after it is first created (1600) - Fix tx_descriptor leak in failed transmit situations (1827) - ext3 journaling fixes for assertion failure after IO error (1871) - class_export_put() on freed export after completion AST error (1896) - Fix revalidate looping in VFS (1322) - Don't access a freed export during MDS_REINT timeout (1521) - Add open-unlink recovery support on the MDS (1673,1764) - Return an error if no MDS data was read from last_rcvd (1946) - Fix for lookup "." or ".." crash on error (1932,1931,1935) - Don't setup a disk device that doesn't match exported UUID (317) - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845) - avoid committing NULL handle in force close - local.sh is now a one-stripe LOV configuration - POSIX utime.4 -EPERM on FIFO not owned by user (56) - fix ext3 htree duplicate directory entry corruption (1516) - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020) - update to new LOV EA format (2097) - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042) 2003-06-15 Phil Schwan * version v0_7 * bug fixes - imports and exports cleanup too early, need refcounts (349, 879, 1045) - per-import/export recovery handling (958, 931, 959) - multiple last-rcvd slots, for serving multiple FSes (949) - connections are again shared between multiple imp/exports (963, 964) - "umount -f" would hang if any requests needed to be sent (393, 978) - avoid pinning large req buffer by copying for queued messages (989) - add "uuid" to "lctl device" command to help upcalls (991) - "open" RPCs with transnos would confuse recovery counters (1037) - do proper endian conversion of all wire messages (288, 340, 891) - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126) - call waiting locks callback from LDLM recovery thread (1127, 1151) - fix ptlrpc_connection leak in target_handle_connect (1174) - fix import refcounting bug in OST and MDS cleanup (1134) - if an invalid-at-open-time OSC returned before close(), LBUG (1150) - fix very unlikely obd_types race condition (501) - remove osc_open hack for echo_client (1187) - we leaked exports/dlmimps for forcibly disconnected clients (1143) - a failure in read_inode2 leads to deadlock (1139) - cancel ack-locks as soon as transaction is committed (1072) - fix major leaks and crashes in the bulk I/O path (937, 1057) - make sure to commitrw after any preprw to avoid deadlock (1162) - failing to execute a file in a lustre FS would lock inode (1203) - small DEBUG_REQ fix to avoid dereferencing a NULL (1227) - don't ASSERT while cleaning up an incompletely-setup obd (1248) - obd_uuid2tgt would walk off the end of the list (1255) - on IA64 the osc would give portals incorrect bulk size (1258) - fix debug daemon ioctl interface; allows daemon on ia64 (1274) - fix lock inversion caused by new llite matching code (1282) - limit the number of dirty pages on a client to 10MB (1286) - timed out locks were not being corrected cancelled (1289) - fix O_DIRECT above 4GB on IA-32 (1292) * major user-visible changes - fail out/fail over policy now controlled by the upcall (993) * protocol changes - add OBD_PING to check server availability and failure (954) - lustre messages are now sent in sending host order (288, 340, 891) - add eadatalen to MDS getattr reply (340) - OST read replies may contain second buffer, with per-page status (593) 2003-03-11 Phil Schwan * version v0_6 * bug fixes - LDLM_DEBUG macro fix, for gcc 3.2 (850) - failed open()s could cause deadlock; fixed (867, 869) - stop cancelling OST locks when files are closed (481) - overlapping XID spaces caused network corruption (851, 853) - fix unsafe fsfilt counter arithmetic; change to atomic_t - setattr_raw added, to do single-RPC, server-side setattrs - lmc/lconf syntax change for OST UUIDs - fix crashy race condition between ptlrpc_free_req and osc_close - don't use request in mdc_enqueue if we hit a timeout (889) - don't set the inode i_size for regular files from the MDS (896) - handle out of order completion AST (842) - don't LBUG if a lock request times out after receiving AST (913) - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock - if a bad lock AST arrives, send an error instead of dropping entirely - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912) - fix leak in bulk IO when only partially completed (899, 900, 926) - fix O_DIRECT for ia64 (55) - (almost) eliminate Lustre-kernel-thread effects on load average (722) - C-z after timeout could hang a process forever; fixed (977) * Features - client-side I/O cache (678, 924, 929, 941, 970) * protocol changes - READPAGE and SETATTRs which don't take server-side locks get their own portal 2003-02-11 Phil Schwan * version v0_5_20 * bug fixes - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592) - Fix fsfilt_extN_readpage() to read a full page of directory entries, or fake the remainder if PAGE_SIZE != blocksize (500) - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604) - Fix imbalanced LOV object allocation and out-of-bound access (469) - Most intent operations were removed, in favour of a new RPC mode that does a single RPC to the server and bypasses most of the VFS - All LDLM resource ID arrays were removed in favour of ldlm_res_id - Aggressively cancel local locks on DLM servers - mds_reint_unlink sends EA to the client if it's the last nlink. client uses that EA to unlink OST objects. - mds_reint_{rename,unlink,link} were rewritten to take ordered locks - recursive symlinks were fixed (439) - fixed NULL deref in DEBUG_REQ - filter_update_lastobjid no longer calls sync, which annoyed extN - fixed multi-client small-writes to a single file problem (445) - fixed mtime updates during file writes (607) - fixed vector writes on obdfilter causing problems when ENOSPC (670) - fixed bug in obd_brw_read/write() (under guise of testing 367) - fixed Linux OST size reporting problem (444, 656) - OST now updates object mtime with writes or setattr (607, 619) - client verifies file size before zeroing page past EOF (445) - OST now writes last allocated objid to disk with allocation (108) - LOV on echo now works (409) * protocol changes - mds_reint_unlink sends a new buffer, with the EA included. this buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only set if a regular file was being unlinked, and it was the last link - use PtlGet from the target for bulk writes (315) - OST now updates object mtime with writes or setattr (607, 619) - LDLM now has a grant-time callback to revalidate locked items, if necessary (604) - Many MDS operations were reorganized to combat race conditions * other changes - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre - configure check to avoid gcc version 2.96 20000731-2.96-98) (606) 2003-01-06 Andreas Dilger * version v0_5_19 * bug fixes - Fully reactivate OST imports after reconnection (512, others) - Make sure client sees our -ENOTCONN from mds_handle (513 - partial) - More graceful error handling for truncating on dead OST (515) - Don't error out unless we're actually accessing dead stripes (474) - Fix garbage sizes when stripes are missing (410) - LRU counters were broken, causing constant lock purge (433, 432) - garbage on read from stripes with failed OSTs (441) - mark OSCs as active before reconnecting during recovery (438) - lov_enqueue and lov_cancel need to handle inactive OSTs (403) - lfind did not preserve OST order in output (443) - symlinks cause hung clients, incorrect data (439) - stop dereferencing request after dropping refcount (457) - don't LASSERT(spin_is_locked) on non-SMP (455) - fixes for many rename() bugs - fstat didn't correctly synchronize attributes (399) - server must handle lock cancellation during blocking AST prep (487) - bulk descriptors were free()d too soon (511) - fix paths in lconf, which would load incorrect modules (451, 507) - fix confusing lconf 'host not found' error message (386) - fix lock order deadlock on OST (O/R i_sem before journal ops, 478) - fix race condition in mdc_blocking_ast() for inode access (526) - fix lov_unpackmd() unpacking wrong number of stripes (537) - fix lov_set_osc_active() marking wrong OSC inactive (440) - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527) - fix multiple writes of stripe MD to MDS (358, maybe 519) - fix lstripe in several ways (kernel side) (527) - fix request leak in ldlm_cli_enqueue (262) - incorrect OSC was marked inactive after OST failure - call mds_fs_cleanup before unmounting filesystem (524) - fix races between taking ns_lock and ldlm_lock_change_resource - fix races updating LOV export open file list - fix lov_enqueue error path, avoid decref-ing bad lock handle - fix recovery NULL deref in ldlm_cli_cancel_unused - fix some DLM races by using new hash table for lock handles (419) - permit the client to specify desired inodes, at replay - duplicate requests when we queue them for replay reintegration - fix last_rcvd offset calculation - sync after each recovered transaction, so we always make progress - never, not always, ERESTART requests without transnos - store the lov_desc in the MDS, so we don't depend on getlovinfo to set it - skip replay if the MDS says that the client is already connected - don't check for a recovery-enabled export to match lctl's UUID - don't INC_USE_COUNT for phantom exports - don't crash when cleaning up phantom exports (567) - don't double-finish or set replay data for errored mdc_open requests - abort requests when they time out, so we don't get old replies - send/receive replies for AST messages again - if the client says that it doesn't have the lock, cancel it on the server - if we timeout during I/O, don't try to cancel an in-use lock; instead mark it as destroyed, it will all work out when decref is called - fix module use counts (22, 581) * protocol changes - ASTs now expect a reply (server cancels lock on error reply) 2002-12-02 Andreas Dilger * version v0_5_18 * bug fixes - fix many simultaneous client startup (392) - fix dentry->d_it clobbering - credentials weren't being shipped for readdir/getattr operations - remove invalid assertions triggered during some concurrent MD updates - proper Lustre versions added (336, 389) - fix memory leak for create error case (398) - fix LOV locking bug that would get cli/srv out of sync - fix echo client over LOV (409) - fix dbench 2, extN refcount problem (170, 258, 356, 418) - fix double-O_EXCL intent crash (424) - avoid sending multiple lock CANCELs (352) * Features - MDS can do multi-client recovery (modulo bugs in new code) * Documentation - many updates, edits, cleanups 2002-11-18 Phil Schwan * version v0_5_17 * bug fixes - fix null d_it dereference (346) - fix full OST/dbench hang (333) - fix permission problem with file removal (286) - fix removal of OSCs from LOV when they fail - fix NULL deref during bulk timeout (214) - fix problems related to multiple filesystems on one MDS (241) - fixed serious subtle metadata locking bugs - free locks on clients when inodes are removed due to memory pressure (201) - fix inode pointer in lock data (285) - partial support for multiple MDS on a single host (241) - data locks weren't cancelled at clear_inode time (290, 311) - intent locks could lead to unbounded lock growth (205) - added a maximum lock count, an LRU list, and a flusher - fix multiple rename (365) - properly abstracted the echo client - OSC locked 1 byte too many; fixed - rewrote brw callback code: - fixed recovery bugs related to LOVs (306) - fixed too-many-pages-in-one-write crash (191) - fixed (again) crash in sync_io_timeout (214) - probably fixed callback-related race (385) * protocol change - Add capability to MDS protocol - LDLM cancellations and callbacks on different portals 2002-10-28 Andreas Dilger * version v0_5_16 * bug fixes: - limit client IOV size to PTL_MD_MAX_IOV (611336, 191) - defer open object destruction to close time (601981, 138) - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138) - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069) - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256) - don't call obd_setattr in ll_file_release for destroyed objects * protocol change to lustre_msg: move |version| and add |flags| * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks" * lock replay: for LDLM_FL_REPLAY trust client to do right thing * added replay of create, unlink, link and rename operations during MDS failover; recovery should be much more robust now * remove failed OSCs from LOVs (only lov_create uses this so far) * the lustre-HOWTO was brought (more) up to date (582544) 2002-10-23 Phil Schwan * version v0_5_15 * bug fixes: - in-use dentries weren't being reused properly (617851) - prevent multiple LDLM setup (599178) - fix LOV size calculations for truncate (617853) - fix client handling of MDS intent errors (POSIX) - fix permission bug in lovstripe.c test (624321) - fix MDS thread deadlock - move LDLM handler to DLM portal (625069) - truncate past end of file could corrupt data - proper cleanup after timeouts, crashes, etc (592524, 550815) - a race in recovery could return ETIMEDOUT to apps (623947) - building outside the source directory was fixed * the lustre-HOWTO was brought (more) up to date (582544) * major progress was made on recovery functionality 2002-10-10 Phil Schwan * version v0_5_14 * bug fixes: - recovery deadlock fix - rm -rf causes LBUG fix (617817) - file open by multiple tasks fix (618962) - directory permissions bugs (602707 and 620007) - journal_stop fixed with locking (611313) - O_APPEND failures resolved (618273, perhaps 614459) - lconf PATH fix (619770) - IA64 build fix (621450) - RPC buffer sizes scale with amount of memory 2002-10-01 Phil Schwan * version v0_5_13 * bug fixes: - locks would be cancelled without throwing away data pages, resulting in inconsistent data (605627) - inode attributes were not always being refreshed (605627, 612449) - lconf now continues to cleanup after lctl reports an error - MDS now enforces user permissions (602707) - lprocfs cleanup fixed, but not yet enabled (614157) - fixed infinite server hang, should a client not respond to an AST - avoid going into recovery if user calls readlink() with a buffer that's too small (613941) - AST RPCs no longer require replies (614867) -- this may be changed - don't crash server if client sends an IOV that's too big (611336) - fixed lock conversion deadlock (611892) - fixed the following of symlinks (614622) * recovery: the server can remove locks from a client that dies, other clients can make progress * more extN patch fixes * compile-time configurable ptlrpc buffer allocations * documentation - collaborative read cache document - Lustre Lite Performance CDR document-in-progress 2002-09-20 Andreas Dilger * version v0_5_12 * bug fix - fix typo in patch-2.4.18 2002-09-20 Andreas Dilger * version v0_5_11 * bug fixes - clear ptlrpc request each time in handle_incoming_request() - unlink of files now destroys the object on the OST 2002-09-19 Peter Braam * version 0_5_10 * add hard link support * change obdfile creation method * kernel patch changed 2002-09-19 Peter Braam * version 0_5_9 * bug fix - stack overflow bug in extN fixed 2002-09-18 Andreas Dilger * version 0_5_8 * documentation updates - add man pages for config tools - update tests/README to describe testing with new config tools - finish metadata API descriptions * bug fixes and cleanups - statfs workaround for 16TB limit - LOV stripe allocation improved, can stripe on subset of OSTs - LOV file size/IO offset was wrong for files > 4GB in size - object EA data was being dropped, caused files to be unreadable - memory overflow with non-LOV OST caused memory corruption - fixed regression tests to work with new config tools, obdfilter - fixed bug when directory size became larger than 1 block - fixed bug (for single client case) when PWD was deleted - invalidate local directory pages when doing intent-based ops - avoid LDLM oops when lock callback contained bad data 2002-09-09 Andreas Dilger * version 0_5_7 * documentation updates * bug fixes and cleanups - configuration tools - LOV - imports/exports - 64-bit compile warnings - 64-bit internal statfs data - many more * test_brw on persistent OST devices * MDS recovery * lprocfs (disabled) 2002-09-04 Andreas Dilger * version 0_5_6 * documentation updates * bug fixes and cleanups * configuration tools 2002-08-30 Peter J. Braam * version v0_5_5 * many small fixes to 0_5_4 * io/network handling * thinkos in MDS operations 2002-08-24 Peter J. Braam * version v0_5_4 * crucial basic fixes to 0.5.3 * IOR, Iozone work over Elan * EOF locks added 2002-08-07 Phil Schwan * version 0_5_3, our first alpha * we use the new Portals iovs * documentation updates * bug fixes and cleanups * small changes in the DLM wire protocol 2002-07-25 Peter J. Braam * version 0_5_1 with some initial stability, * locking on MD and file I/O. * documentation updates * several bug fixes since 0.5.0 * small changes in wire protocol 2002-07-18 Phil Schwan * version v0_4_5 * delivered as Lustre Light Alpha * fixed a crash after handling invalid MDS requests * fixed directory pages for architectures with non-4k pages sizes 2002-07-11 Andreas Dilger * release version v0_4_4 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead of 1234. * Fixes a number of interruption problems with OST operations. * Update documentation for portals header changes * Move all wire protocol structs/defines to lustre_idl.h * Fixes symlink length bug. * Add tcpdump to repository. 2002-07-05 Andreas Dilger * release version v0_4_3 * Fixes statfs for inodes on extN. * Fixes bug in runtests which would delete /etc/hosts. * Use 64-bit object IDs wherever possible (not into VFS though) Remove ost_get_info, which is unused by lustre, and out of date. 2002-07-03 Peter Braam * release version v0_4_2 Fixes a lookup error (type not passed) * move forward to head of Portals * move forward to latest Lustre kernel 2002-06-25 Peter Braam * release version v0_4_1. Hopefully stable on single node use.