3 * See http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix
4 * Server support for kernels:
5 2.6.32-220.4.2.el6 (RHEL6)
6 * Client support for unpatched kernels:
7 2.6.32-220.4.2.el6 (RHEL6)
9 2.6.18-238.19.1.el5 (RHEL5)
10 2.6.16.60-0.69.1 (SLES10)
11 * Recommended e2fsprogs version: 1.41.90.wc4
12 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
13 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
14 stack overflow. For more information, please refer to bugzilla 17630.
15 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
16 the re-exporting nodes to be mounted with "32bitapi" mount option
18 Severity : enhancement
20 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
22 Severity : enhancement
24 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
26 Severity : enhancement
28 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
30 Severity : enhancement
32 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
34 --------------------------------------------------------------------------------
36 09-30-2011 Whamcloud, Inc.
38 * Server support for kernels:
39 2.6.18-238.19.1.el5 (RHEL5)
40 2.6.32-131.6.1.el6 (RHEL6)
41 * Client support for unpatched kernels:
42 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
43 2.6.18-238.19.1.el5 (RHEL5)
44 2.6.32-131.6.1.el6 (RHEL6)
45 2.6.29.4-167.fc11 (FC11)
46 2.6.16.60-0.69.1 (SLES10)
48 * Recommended e2fsprogs version: 1.41.90.wc3
49 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
50 Lustre filesystem with 4K stack may cause a stack overflow. For more
51 information, please refer to bugzilla 17630.
52 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
53 mounted with "32bitapi" mount option
55 Severity : enhancement
56 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
58 Severity : enhancement
59 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
61 Severity : enhancement
62 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
65 Frequency : only with SLES10
67 Description: Use OFED "KMP" provided by Novell
68 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
69 Lustre is now built against this package. That means you need to
70 install the ofed-kmp package from Novell for the patchless client.
71 Note that the ofed-kmp that Novell ships may not exactly match the
72 kernel version but should still be compatible.
74 Severity : enhancement
76 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
77 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
79 --------------------------------------------------------------------------------
81 2010-07-15 Oracle, Inc.
83 * Server support for kernels:
84 2.6.18-164.11.1.el5 (RHEL 5)
85 2.6.18-164.11.1.0.1.el5 (OEL 5)
86 * Client support for unpatched kernels:
87 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
88 2.6.18-164.11.1.el5 (RHEL 5),
89 2.6.18-164.11.1.0.1.el5 (OEL 5)
90 2.6.16.60-0.42.8 (SLES 10),
92 2.6.29.4-167.fc11 (FC11)
93 * Recommended e2fsprogs version: 1.41.10-sun2
95 Severity : enhancement
97 Description: Distribute lfs_migrate script with lustre
98 Details : The lfs_migrate mentioned in the manual is now included in the
99 lustre tree in lustre/scripts and will distributed in lustre RPMs.
101 Severity : enhancement
103 Description: Failover nid list added to import proc file.
105 Severity : enhancement
107 Description: "som_preview" mount option required to use SOM
108 Details : The clients will need to use som_preview mount option
112 Description: Lustre does not do 1MB IOs to HW RAID
113 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
115 Severity : enhancement
117 Description: lfs quota output is not very convenient for awk/sed-parsing
118 Details : Some positions in lfs quota output table could be empty or
119 non-empty which made it hard to parse it with scripts, now
120 a dash is put instead of space where there is not supposed
125 Description: Update to OFED 1.5.1
126 Details : OFED 1.5.1 will be used in environments that don't use
127 vendor supplied OFED.
131 Description: Remove lnet. prefix from lctl params display
132 Details : Also renamed lnet.memused to lnet_memused to
137 Description: Use conf_param -d to remove permanant settings.
141 Description: Add list_param -R
142 Details : lctl list_param now supports recursive mode.
145 Bugzilla : 21829, 22312
146 Description: Fix llobdstat.
147 Details : 1. Now updating the write_bytes counter
148 2. Port script fixes from 1.8.
152 Description: decrease the usage of memory on clients.
153 Details : 1. On clients, recycle dentries and inodes unused.
154 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
159 Description: llobdstat fix and enhancement
160 Details : add a counter to set a limit to how many samples will be returned
161 fix a wildcard in the path to limit to obdfilter stats only
165 Description: lfs check only allowed for root
166 Details : Code cleanups and added a regresion test of non-root use of
171 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
172 Details : Fix hr->hr_index overload.
176 Description: Fix FIEMAP functionality.
180 Description: FC11 patchless client support added
184 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
185 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
189 Description: New acc-sm script and various test-framework enhancments.
193 Description: Previously landed patch was reverted.
197 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
201 Description: Add ldiskfs maxdirsize mount option.
205 Description: Fix mkfs.lustre support for 16TB LUNs.
209 Description: Print mmp_check_interval
210 Details : print mmp_check_interval and make it possible to abort
211 mount operation in case it takes too long.
215 Description: Add cascading_rw to lustre mpi tests.
219 Description: Store SOM data in EA.
220 Details : Also several SOM related cleanups.
224 Description: Add refcount to md_open_data
228 Description: Use refcount on lov_request_set to prevent memory corruption.
232 Description: Statahead: use parent dir's i_mutex for synchronization.
236 Description: loadgen improvements.
240 Description: Enable peer health detection in ksocklnd and ko2iblnd.
244 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
248 Description: Fix race on obd_devcie:md_stats
252 Description: Fix SLES 11 client builds.
253 Details : Resolved uninitalized pointer gcc warnings.
257 Description: Allow non-root access for "lfs check".
258 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
262 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
264 Severity : enhancement
266 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
267 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
271 Description: Sanity test_27p fails.
272 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
273 Sanity tests 27 were cleaned up and improved.
277 Description: Unify req format on client/servers
278 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
279 buffers and swabbers approach..
284 Description: drop join file stuff.
286 Severity : enhancement
288 Description: Add 2.6.27 and SLES11 (patchless client) support
292 Description: Fix in ptlrpc_expire_one_request() to print the signed time
295 Severity : enhancement
297 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
300 Severity : enhancement
302 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
304 Severity : enhancement
306 Description: correctly handle big reply message.
307 Details : send LNet event if reply is bigger then buffer and adjust this buffer
312 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
314 Severity : enhancement
316 Description: Add support for OEL5.
320 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
322 Severity : enhancement
324 Description: "weak-modules" support
325 Details : Implement "weak-modules" support which enables kernel modules
326 to be used with any kernel that implements the same kABI. In
327 order to achieve this modules are now installed in
328 /lib/modules/$(uname -r)/updates/kernel on all distributions.
332 Description: client could not reconnect to OST because of an active request.
333 Details : The client now retries to reconnect to the same server, if a
334 connect request failed with EBUSY or -EAGAIN. Test case 35b
335 conf-sanity.sh has been created.
339 Description: Don't allow make backward step on assignin osc next id.
340 Details : race between allocation next id and ll_sync thread can be cause
341 of set wrong osc next id and can be kill valid ost objects.
345 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
349 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
353 Description: Error handling in osc_statfs_interpret() has been improved.
354 Details : Check in osc_statfs_interpret() for EBADR.
358 Description: Do not send statfs() requests to OSTs disabled by administrator.
359 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
361 Severity : enhancement
363 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
365 Severity : enhancement
367 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
369 Severity : enhancement
371 Description: Enhancement for lfs(1) command to use numeric uid/gid.
375 Description: Improved cleanup procedure for conf-sanity test_46a.
379 Description: Do not start bulk transfer, if client tried to reconnect.
380 Details : Do not start bulk transfer, if client tried to reconnect,
381 but failed due to active rpcs. Check for exp_abort_active_req
382 has been implemented.
386 Description: Prevent inconsistences between linux and lustre mount structures.
387 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
388 Make the sleep interruptible.
390 Severity : enhancement
392 Description: provide server to client comms path
393 Details : server to client communications path via new LDLM_SET_INFO rpc
397 Description: truncate starts GFP_FS allocation under transaction causing deadlock
398 Details : ldiskfs_truncate calls grab_cache_page which may start page
399 allocation under an open transaction. This may lead to
400 calling prune_icache with consequent lustre reentrance.
404 Description: send correctly lsm on open replay
405 Details : MDS is trust to LSM size on replay open, but client can set wrong size
410 Description: enable client interface failover
411 Details : When a child reconnects from another NID, properly update export
412 nid hash position and ldlm reverse import.
414 Severity : enhancement
416 Description: Communicate OST degraded/readonly state via statfs to MDS
417 Details : Flags in the statfs returned from OSTs indicate whether the
418 OST is in a degraded RAID state, or if the filesystem has
419 turned read-only after a filesystem error is detected.
424 Description: don't panic if EPROTO was hit when reading symlink
425 Details : correctly handling request reference in error cases.
427 Severity : enhancement
429 Description: Add LustreNetLink, a kernel-userspace communcation path.
431 Severity : enhancement
433 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
438 Description: access to llog context before init.
439 Details : move handling CATALOGS file at osc layer and forbid access to llog
443 Frequency : rare, only when client is writing to OST on local node
445 Description: Avoid deadlock for local client writes
446 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
447 memory freeing context. This allows OST threads to set the
448 PF_MEMALLOC flag on task structures in order to allocate memory
449 from reserved pools and complete IO.
450 Use GFP_HIGHUSER for OST allocations for non-local client writes,
451 so that the OST threads generate memory pressure and allow
452 inactive pages to be reclaimed.
454 Severity : enhancement
456 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
461 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
462 Details : move ldlm namespace creation in setup phase to avoid grab
463 _lprocfs_lock with cli_sem held.
467 Description: Temporarily disable grant shrink.
468 Details : Disable the feature for debugging.
471 Frequency : only when formatting test filesystems
473 Description: Unable to run several mkfs.lustre on loop devices at the same time
474 Details : mkfs.lustre returns error 256 on the concurrent loop devices
475 formatting. The solution is to proper handle the error.
477 Severity : enhancement
479 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
481 Severity : enhancement
483 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
488 Description: resolve race between obd_disconnect and class_disconnect_exports
489 Details : if obd_disconnect will be called to already disconnected export he
490 forget release one reference and osc module can't unloaded.
492 Severity : enhancement
494 Description: Allow tuning service thread via /proc
495 Details : For each service a new
496 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
497 created that can be used to set min/max thread counts, and get the
498 current number of running threads.
503 Descriptoin: don't return error if have partially created objects for file.
504 Details : lov_update_create_set uses set->set_success as index for created
505 objects, so if some requests will be failed, they will have hole
506 at end of array and qos_shrink_lsm for allocate correct lsm.
508 Severity : enhancement
510 Description: Update OFED support to 1.4.1
515 Description: Reduce small size read RPC
516 Details : Set read-ahead limit for every file and only do read-ahead when
517 available read-ahead pages are bigger than 1M to avoid small size
520 Severity : enhancement
522 Description: move AT tunable parameters for more consistent usage
523 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
525 Severity : enhancement
527 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
528 Details : allow skip disconnected ost for send statfs request and hide error
534 Description: fix racy locking of mballoc block bitmaps causing BUG
535 Details : The locking of the mballoc buddy bitmap and the in-memory
536 block bitmap was using two different spin locks in some
537 cases. This made it possible to incorrectly access the
538 mballoc bitmap while another process was modifying it,
539 causing a sanity assertion to fail. While no on-disk corruption
540 was reported, there was some risk of this happening.
543 Frequency : rare, on llog test 6
545 Descriptoin: don't allow connect to already connected import
546 Details : allowing connect to already connected import is hide connecting problem.
551 Descriptoin: allow kill process which wait statahead result
552 Details : for some reasons 'ls' can stick in waiting result from statahead,
553 in this case need way for kill this process.
555 Severity : enhancement
557 Description: Add state history info file, enhance import info file
558 Details : Track import connection state changes in a new osc/mdc proc file;
559 add overview-type data to the osc/mdc import proc file.
561 Severity : enhancement
563 Description: MDS create should not wait for statfs RPC while holding DLM lock.
565 Severity : enhancement
567 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
572 Descriptoin: OST grant too much space to client even there are not enough space.
573 Details : Client will shrink its grant cache to OST if there are no write
574 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
575 this grant cache if there are already not enough avaible space
576 (left_space < total_clients * 32M).
579 Frequency : start MDS on uncleanly shutdowned MDS device
581 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
582 Details : stay in waiting mds<>ost recovery finished produce random bugs
583 due race between two ll_sync thread for one lov target. send
584 ACTIVATE event only if connect realy finished and import have
588 Frequency : rare, connect and disconnect target at same time
590 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
591 Details : don't call obd_disconnect under lov_lock. this long time
592 operation and can block ptlrpcd which answer to connect request.
597 Descriptoin: don't lose wakeup for imp_recovery_waitq
598 Details : recover_import_no_retry or invalidate_import and import_close can
599 both sleep on imp_recovery_waitq, but we was send only one wakeup
603 Frequency : always with long access acl
605 Descriptoin: mds can't pack reply with long acl.
606 Details : mds don't control size of acl but they limited by reint/getattr
609 Severity : enhancement
611 Description: Update to SLES10 kernel-2.6.16.60-0.33.
613 Severity : enhancement
615 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
618 Frequency : start MDS on uncleanly shutdowned MDS device
620 Descriptoin: aborting recovery hang on MDS
621 Details : don't throttle destroy RPCs for the MDT.
624 Frequency : on remount
626 Description: external journal device not working after the remount
627 Details : clear dev_rdonly flag for external journal devices in
633 Description: shutdown vs evict race
634 Details : client_disconnect_export vs connect request race.
635 if client will evicted at this time - we start invalidate
636 thread without referece to import and import can be freed
640 Frequency : rare, need acl's on inode.
642 Description: client can't handle ost additional correctly
643 Details : if ost was added after client connected to mds client can have
644 hit lnet_try_match_md ... to big messages to wide striped files.
645 in this case need teach client to handle config events about add
646 lov target and update client max ea size at that event.
648 Severity : enhancement
650 Description: Changelogs
651 Details : Changelogs are a lightweight mechanism to track filesystem
652 metadata and namespace changes. The changelog is recorded
653 permanently on the MDTs, and is periodically "consumed" / purged
654 when records are no longer needed.
656 Severity : enhancement
658 Description: compact fld format with extents
659 Details : Store range of seq rather than every seq in FLD. Seq
660 controller update FLD rather than clients. In Case of CMD, mdt0
661 has FLD, all other metadata server act as non persistent proxy
662 for FLD queries and cache fld entries in fld cache.
667 Description: don't skip ost target if they assigned to file
668 Details : Drop slow OSCs if we can, but not for requested start idx.
669 This means "if OSC is slow and it is not the requested
670 start OST, then it can be skipped, otherwise skip it only
671 if it is inactive/recovering/out-of-space.
675 Description: more cleanup in mds_lov
676 Details : not send LOV EA under replay, we can't know about they size at this
677 time. Don't allow client connect to mds before any ost connected,
678 for avoid problems with LOV EA size and returning EIO to client.
680 Severity : enhancement
682 Description: Interoperability at server side (Disk interoperability)
684 Severity : enhancement
686 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
688 Severity : enhancement
690 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
692 Severity : enhancement
694 Description: New client IO stack (CLIO).
696 Severity : enhancement
698 Description: Commit on sharing. Eliminate inter-client dependencies between
699 uncommitted transactions by doing transaction commits.
700 Thereby clients may recovery independently.
703 Frequency : Create a symlink file with a very long name
705 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
706 Details : If there is no extra space in the request for early cancels,
707 ldlm_req_handles_avail() returns 0 instead of a negative value.
709 Severity : enhancement
711 Description: Add /proc entry for import status
712 Details : The mdc, osc, and mgc import directories now have
713 an import directory that contains useful import data for debugging
716 Severity : enhancement
718 Description: Re-disable certain /proc logging
719 Details : Enable and disable client's offset_stats, extents_stats and
720 extents_stats_per_process stats logging on the fly.
723 Frequency : Only on FC kernels 2.6.22+
725 Description: oops in statahead
726 Details : Do not drop reference count for the dentry from VFS when lookup,
727 VFS will do that by itself.
729 Severity : enhancement
731 Description: Generic /proc file permissions
732 Details : Set /Proc file permissions in a more generic way to enable non-
733 root users operate on some /proc files.
737 Description: Hitting mdc_commit_close() ASSERTION
738 Details : Properly handle request reference release in
739 ll_release_openhandle().
743 Description: quota recovery deadlock during mds failover
744 Details : This patch includes att18982, att18236, att18237 in bz14840.
746 1. fix osts hang when mds does failover with quotaon
747 2. prevent watchdog storm when osts threads wait for the
752 Frequency : only patchless client
753 Description: add workaround for race between add/remove dentry from hash
755 Severity : enhancement
757 Description: Allow OST glimpses to return PW locks
761 Description: LBUG when llog conf file is full
762 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
766 Description: Prevent import from entering FULL state when server in recovery
770 Description: service mount cannot take device name with ":"
771 Details : Only when device name contains ":/" will mount treat it as
777 Description: replace ptlrpcd with the statahead thread to interpret the async
778 statahead RPC callback
782 Frequency : on recovery
783 Description: I/O failures after umount during fail back
784 Details : if client reconnected to restarted server we need join to recovery
785 instead of find server handler is changed and process self
786 eviction with cancel all locks.
788 Severity : enhancement
790 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
792 Severity : enhancement
794 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
796 Severity : enhancement
798 Description: Upcall on Lustre log has been dumped
799 Details : Allow for a user mode script to be called once a Lustre log has
800 been dumped. It passes the filename of the dumped log to the
801 script, the location of the script can be specified via
802 /proc/sys/lnet/debug_log_upcall.
807 Description: avoid idr_remove called for id which is not allocated.
808 Details : Move assigment s_dev for clustered nfs to end of initialization,
809 to avoid problem with error handling.
814 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
815 Details : When connection is reused this not moved from CONN_UNUSED_HASH
816 into CONN_USED_HASH and this prodice warning when put connection
817 again in unused hash.
820 Severity : enhancement
822 Description: File striping can now be set to use an arbitrary pool of OSTs.
824 Severity : enhancement
826 Description: Export bytes_read/bytes_write count on OSC/OST.
830 Description: Early reply size mismatch, MGC loses connection
831 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
832 the connect flags are properly negotiated.
837 Description: quotas are not honored with O_DIRECT
838 Details : all writes with the flag O_DIRECT will use grants which leads to
839 this problem. Now using OBD_BRW_SYNC to guard this.
843 Description: add quota statistics
844 Details : 1. sort out quota proc entries and proc code.
845 2. add quota statistics
847 Severity : enhancement
849 Description: enable quota support for HEAD.
853 Description: Properly propagate oinfo flags from lov to osc for statfs
854 Details : restore missing copy oi_flags to lov requests.
856 Severity : enhancement
858 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
859 : l_getgroups(8), lst(8), routerstat(8)
860 Details : included man pages for llobdstat(8), llstat(8),
861 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
863 Severity : enhancement
865 Description: configure's --enable-quota should check the
866 : kernel .config for CONFIG_QUOTA
867 Details : configure is terminated if --enable-quota is passed but
868 : no quota support is in kernel
872 Description: Remove portals compatibility
873 Details : Remove portals compatibility, not interoperable with releases
878 Description: Resolve device initialization race
879 Details : Prevent proc handler from accessing devices added to the
880 obd_devs array but yet be intialized.
882 Severity : enhancement
884 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
886 Severity : enhancement
888 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
893 Description: Using wrong pointer in osc_brw_prep_request
894 Details : Access to array[-1] can produce panic if kernel compiled with
895 CONFIG_PAGE_ALLOC enabled
899 Description: Client runs out of low memory
900 Details : Consider only lowmem when counting initial number of llap pages
904 Description: *optional* service tags registration
905 Details : if the "service tags" package is installed on a Lustre node
906 When the filesystem is mounted, a local-node service tag will
907 be created. See http://inventory.sun.com/ for more information
908 about the Service Tags asset management system.
912 Description: Kernel BUG tries to release flock
913 Details : Lustre does not destroy flock lock before last reference goes
914 away. So always drop flock locks when client is evicted and
915 perform unlock regardless of successfulness of speaking to MDS.
919 Description: add refcount protection for osc callbacks, avoid panic on shutdown
923 Description: sanity test 65a fails if stripecount of -1 is set
924 Details : handle -1 striping on filesystem in ll_dirstripe_verify
929 Description: ASSERTION(CheckWriteback(page,cmd)) failed
930 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
933 Severity : enhancement
935 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
939 Description: do not process already freed flock
940 Details : flock can possibly be freed by another thread before it reaches
941 to ldlm_flock_completion_ast.
945 Description: LBUG during stress test
946 Details : Need properly lock accesses the flock deadlock detection list.
950 Description: oops in page fault handler
951 Details : kernel page fault handler can return two special 'pages' in error
952 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
956 Description: timeout with invalidate import.
957 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
958 should be handled by ptlrpcd. This produce long age waiting and
959 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
961 Severity : enhancement
963 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
967 Description: enable MGS and MDT services start separately
968 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
969 a co-located MGS without starting the MGS, which is a complement
970 to 'nosvc' mount option.
974 Frequency : after recovery
975 Description: precreate to many object's after del orphan.
976 Details : del orphan st in oscc last_id == next_id and this triger growing
977 count of precreated objects. Set flag LOW to skip increase count
978 of precreated objects.
982 Frequency : rare, on clear nid stats
983 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
984 Details : when clean nid stats sometimes try destroy live entry,
985 and this produce panic in free.
989 Description: Stack overflow during MDS log replay
990 ease stack pressure by using a thread dealing llog_process.
994 Description: wait until IO finished before start new when do lock cancel.
995 Details : VM protocol want old IO finished before start new, in this case
996 need wait until PG_writeback is cleared until check dirty flag and
997 call writepages in lock cancel callback.
999 Severity : enhancement
1001 Description: using special macro for print time and cleanup in includes.
1005 Description: mds_mfd_close() ASSERTION(rc == 0)
1006 Details : In mds_mfd_close(), we need protect inode's writecount change
1007 within its orphan write semaphore to prevent possible races.
1011 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1015 Frequency : rare, on shutdown ost
1016 Description: don't hit live lock with umount ost.
1017 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1018 use shrink_dcache_sb instead.
1022 Description: don't panic with use echo client
1023 Details : echo client pass NULL as client nid pointer and this produce null
1024 pointer dereference.
1028 Description: fix build on ppc32
1029 Details : compile code with -m64 flag produce wrong object file for ppc32.
1033 Description: add message levels for liblustreapi
1037 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1038 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1039 will result in an -EAGAIN and in the exit call path we call
1040 alloc_rr() which will with increasing aggressiveness attempt to
1041 aquire precreated objects on the minimum number of required OSCs.
1045 Description: Use old size assignment to avoid deadlock
1046 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1047 the scheduling while holding a spinlock. We do not need locking
1048 for size in ll_update_inode() because size is only updated from
1049 the MDS for directories or files without objects, so there is no
1050 other place to do the update, and concurrent access to such inodes
1051 are protected by the inode lock.
1055 Description: resolve "_IOWR redefined" build error on SLES10
1059 Description: dump the memory debugging after all modules are unloaded to
1060 suppress false negative in conf_sanity test 39
1062 Severity : enhancement
1064 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1069 Description: fix SLES kernel versioning
1070 Details : the kernel version for our SLES 10 kernel did not include a "-"
1071 before the "smp" at the end. while this was not a problem in
1072 general, it did mean that software trying to use the kernel
1073 version to try to detect a vendor specific kernel would fail.
1074 this was most evident by the OFED build scripts.
1078 Description: Don't update lov_desc members until making sure they are valid
1079 Details : When updating lov_desc members via proc fs, need fix their
1080 validities before doing the real update.
1084 Description: don't put request into delay list while invalidate in flight.
1085 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1086 import in flight. this produce timeout for invalidate and sometimes
1087 can cause stale data.
1091 Frequency : on ppc only
1092 Description: not convert ost objects for directory because it's not exist.
1093 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1097 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1099 Severity : enhancement
1101 Description: Update to support 2.6.22.14 vanilla kernel.
1105 Frequency : rare, on recovery
1106 Description: read procfs can produce deadlock in some situation
1107 Details : Holding lprocfs lock which send rpc can produce block for destroy
1108 obd objects and this also block reconnect with -EALREADY. This
1109 isn't fix all lprocfs bugs - but make it rare.
1111 Severity : enhancement
1113 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1116 Frequency : frequent on X2 node
1118 Description: mdc_set_open_replay_data LBUG
1119 Details : Set replay data for requests that are eligible for replay.
1123 Description: lustre_mgs: operation 101 on unconnected MGS
1124 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1125 MGC, and late on MGC cannot successfully connect to MGS and a lot
1126 of the error messages complaining that MGS is not connected.
1130 Frequency : on network error
1131 Description: panic with double free request if network error
1132 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1133 but it's true only for synchronus enqueue, for async enqueue
1134 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1137 Severity : enhancement
1139 Description: client-side metadata stat-ahead during readdir(directory readahead)
1140 Details : perform client-side metadata stat-ahead when the client detects
1141 readdir and sequential stat of dir entries therein
1144 Frequency : on start mds
1146 Description: Implement get_info(last_id) in obdfilter.
1149 Frequency : occasional
1151 Description: Correctly check stale fid, not start epoch if ost not support SOM
1152 Details : open with flag O_CREATE need set old fid in op_fid3 because
1153 op_fid2 was overwritten with new generated fid, but mds can answer
1154 with one of these two fids and both is not stale. Setattr
1155 incorrectly started an epoch and assume will be called
1156 done_writing, but without SOM done_writing ever being called.
1159 Frequency : rare, depends on device drivers and load
1161 Description: MDS or OSS nodes crash due to stack overflow
1162 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1163 In some cases, in conjunction with device drivers that use a lot
1164 of stack the MDS (or possibly OSS) service threads could overflow
1165 the stack. One change which was identified to consume additional
1166 stack has been reworked to avoid the extra stack usage.
1169 Frequency : occasional
1171 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1172 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1173 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1174 oscc_has_objects and see OSC has no objests and call
1175 oscc_internal_create to resend create request.
1177 Severity : enhancement
1179 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1181 Severity : enhancement
1183 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1186 Frequency : very rare
1188 Description: Fix replay if there is an un-replied request and open
1189 Details : In some cases, older replay request will revert the
1190 mcd->mcd_last_xid on MDS which is used to record the client's
1191 latest sent request.
1193 Severity : enhancement
1195 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1197 Severity : enhancement
1199 Description: Add rhel5 support to HEAD.
1201 Serverity : enhancement
1203 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1208 Description: Don't allow skipping OSTs if index has been specified.
1209 Details : Don't allow skipping OSTs if index has been specified, make
1210 locking in internal create lots better.
1214 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1215 Details : access to bitfield in structure is always rounded to long
1216 and this produce problem with not atomic change any bit.
1220 Description: Lustre make rpms failed.
1221 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1222 builds Lustre rpms from tarball.
1225 Frequency : rare on shutdown ost
1227 Description: If llog cancel was not send before clean_exports phase, this can
1228 produce deadlock in llog code.
1229 Details : If llog thread has last reference to obd and call class_import_put
1230 this produce deadlock because llog_cleanup_commit_master wait when
1231 last llog_commit_thread exited, but this never success because was
1232 called from llog_commit_thread.
1236 Description: allow userland application know is lost one of stripes.
1237 Details : fill lvb_blocks with error code on ost and return it to
1238 application if error flag found.
1242 Description: NULL lov_tgts causing MDS oops
1243 Details : more safe checks for NULL lov_tgts for avoid oops.
1245 Severity : enhancement
1247 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1251 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1252 Details : If an OST is down the MDS will hang indefinitely in
1253 obd_statfs_rqset() waiting for the statfs data. While for
1254 MDS QOS usage of statfs, it should not stuck in waiting.
1256 Severity : enhancement
1258 Description: remote_acl support
1259 Details : Support ACL-based permission check for remote user.
1260 Support setfacl/getfacl for remote user with the utils
1261 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1262 the system "{s,g}etfacl" utils.
1264 Severity : enhancement
1266 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1268 Severity : enhancement
1270 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1274 Description: make mgs_setparam() handle fsname containing dash
1275 Details : fsname containing a dash does not work with lctl conf_param
1277 Severity : enhancement
1279 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1281 Severity : enhancement
1283 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1287 Frequency : rare, at shutdown
1288 Description: access already free / zero obd_namespace.
1289 Details : if client_disconnect_export was called without force flag set,
1290 and exist connect request in flight, this can produce access to
1291 NULL pointer (or already free pointer) when connect_interpret
1292 store ocd flags in obd_namespace.
1296 Frequency : only at startup
1297 Description: not alloc memory with spinlock held.
1298 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1299 if any spinlock held.
1301 Severity : enhancement
1303 Description: make lustre randomly fail allocating memory
1304 Details : Make lustre randomly failed allocating memory for testing purpose.
1306 Severity : enhancement
1308 Description: lost problems with lov objid file
1309 Details : Fixes some scability and access to not inited memory problems
1310 in work with lov objdid file.
1315 Description: lfs find does not continue on file error
1316 Details : Continue other files processing when a file/dir is absent.
1320 Description: Inconsistent usage of lustre_pack_reply()
1321 Details : Standardize the usage of lustre_pack_reply() such that it
1322 always generate a CERROR on failure.
1325 Frequency : occasional
1327 Description: MDS hang or stay in waiting lock
1328 Details : If client receive lock with CBPENDING flag ldlm need send lock
1329 cancel as separate rpc, to avoid situation when cancel request
1330 can't processed due all i/o threads stay in wait lock.
1334 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1338 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1342 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1346 Description: Update to RHEL4 latest kernel.
1348 Severity : enhancement
1350 Description: Build SLES10 patchless client fails
1351 Details : The configure was broken by run ./configure with
1352 --with-linux-obj=.... argument for patchless client. When the
1353 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1354 can't search header adequately. Use absolute path such as
1355 -I($LINUX)/include instead.
1359 Description: interrupt oig_wait produce painc on resend.
1360 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1361 private set, and this produce situation when rq_ptlrpcd_data not
1362 copyed to new allocated request and triggered LBUG on assert
1363 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1364 ptlrpcd set if request is changed and can be safety changed to use
1369 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1370 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1371 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1372 these macros and replace them with their difinitions instead.
1376 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1377 Details : Update which_patch & target file for SLES10 latest kernel.
1380 Description: Remove client patches from SLES 10 kernel.
1381 Details : This causes SLES 10 clients to behave as patchless clients
1382 even on a Lustre-patched (server) kernel.
1384 Severity : enhancement
1386 Description: self-adjustable client's lru lists
1387 Details : use adaptive algorithm for managing client cached locks lru
1388 lists according to current server load, other client's work
1389 pattern, memory activities, etc. Both, server and client
1390 side namespaces provide number of proc tunables for controlling
1393 Severity : enhancement
1395 Description: light-weight GSS support
1396 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1397 and reduce performance overhead.
1399 Severity : enhancement
1401 Description: Linux keyring support
1402 Details : Support using service of Linux keyring for Lustre GSS internal
1403 context refresh/cache mechanism.
1407 Description: Fix errors in lfs documentation
1408 Details : Fixes man pages
1412 Description: don't use GFP_* in generic Lustre code.
1413 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1417 Description: obdclass is limited by single OBD_ALLOC(idarray)
1418 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1422 Description: warnings with build patchless client with vanila 2.6.19 and up
1423 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1424 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1428 Frequency : Only for SLES
1429 Description: sanity_quota fail test_1
1430 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1431 file, which makes TSTID[2] inunique.
1435 Frequency : Only for SLES9
1436 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1437 Details : Update target/ChangeLog/which_patch .
1441 Frequency : Only for test_10 in sanity-quota.sh
1442 Description: a bug in quota test code
1443 Details : checking a test flag in a wrong place
1447 Frequency : Only for test_13 in sanity-quota.sh
1448 Description: a bug in quota test script
1449 Details : shouldn't check overfull allocated quota
1453 Description: jbd statistics
1454 Details : Port older jbd statistics patch for sles10
1456 Severity : enhancement
1458 Description: Add printing inode info into message about error in writepage.
1463 Description: reply_lock_interpret crash due to race with it and lock cancel.
1464 Details : Do not replay locks that are being cancelled. Do not reference
1465 locks by their address during replay, just by their handle.
1469 Frequency : When flocks are used.
1470 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1471 Details : Flock locks might destroy just granted lock if it could be merged
1472 with another existing flock, this is done in completion handler,
1473 so teach ldlm_cli_enquque_fini that this is a valid case for
1479 Description: Oops in read and write path when failing to allocate lock.
1480 Details : Check if lock allocation failed and return error back.
1484 Description: lstripe command fails for valid OST index
1485 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1486 instead of lov->desc.ld_active_tgt_count.
1490 Description: sanity.sh failed test 103
1491 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1496 Description: df doesn't work properly if diskfs blocksize != 4K
1497 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1501 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1502 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1504 Severity : enhancement
1506 Description: Adaptive timeouts
1507 Details : RPC timeouts adapt to changing server load and network
1508 conditions to reduce resend attempts and improve recovery time.
1512 Description: llapi_file_create() does not allow some changes
1513 Details : add llapi_file_open() that allows specifying the mode and
1514 open flags, and also returns an open file handle.
1518 Description: merge and cleanup kernel patches.
1519 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1523 Description: Add journal checksum support.(Kernel part)
1524 Details : The journal checksum feature adds two new flags i.e
1525 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1526 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1527 indicates that the commit block contains the checksum for
1528 the blocks described by the descriptor blocks. Now commit
1529 record can be sent to disk without waiting for descriptor
1530 blocks to be written to disk. This behavior is controlled
1531 using JBD2_FEATURE_ASYNC_COMMIT flag.
1535 Description: OSS needs mutliple precreate threads
1536 Details : Add ability to start more than one create thread per OSS.
1540 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1541 Details : execute lfs setstripe on client
1545 Description: mds_obd_create error creating tmp object
1546 Details : When the user sets quota on root, llog will be affected and can't
1547 create files and write files.
1550 Frequency : Always on ia64 patchless client, and possibly others.
1552 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1553 Details : This allows the patchless client to be loaded on architectures
1554 without this export.
1558 Description: RedHat Update kernel for RHEL5
1559 Details : Add the kernel config file for RHEL5.
1563 Description: RedHat Update kernel for RHEL5
1564 Details : Modify the kernel config file more closer RHEL5.
1568 Description: Build failure against Centos5 (RHEL5)
1569 Details : Define PAGE_SIZE when it isn't present.
1573 Description: test_7 on sanity-quota.sh can't be used on separate machines
1574 Details : add facet to handle it
1578 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1579 Details : with NFS, the anon dentry's parent was set to itself in
1580 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1581 corresponding dentry other than use rec->ur_name.
1583 Severity : enhancement
1585 Description: lfs setstripe enhancement
1586 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1590 Description: enable data checksumming by default
1591 Details : enable checksum by default, allow --disable-checksum
1592 configure option and "-o nochecksum" mount option. Checksums
1593 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1597 Description: lustre support for RHEL5
1598 Details : Add support for RHEL5.
1602 Description: Client eviction due to failover config
1603 Details : after a connection loss, the lustre client should attempt to
1604 reconnect to the last active server first before trying the
1605 other potential connections.
1609 Description: when mds and osts use different quota unit(32bit and 64bit),
1610 quota will be released repeatly.
1611 Details : void sending multiple quota reqs to mds, which will keep the
1612 status between the reqs.
1616 Description: osts not allocated evenly to files
1617 Details : change the condition to increase offset_idx
1620 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1622 Description: Data corruption for OSTs that are formatted larger than 2TB
1624 Details : When generating the bio request for lustre file writes the
1625 sector number would overflow a temporary variable before being
1626 used for the IO. The data reads correctly from Lustre (which
1627 will overflow in a similar manner) but other file data or
1628 filesystem metadata may be corrupted in some cases.
1632 Description: Tune the kernel for good SCSI performance.
1633 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1634 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1639 Description: rewrite ext2-derived code in obdclass/uuid.c
1640 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1641 from scratch preserving functionality.
1645 Description: "lfs find -obd UUID" prints directories
1646 Details : "lfs find -obd UUID" will return all directory names instead
1647 of just file names. It is incorrect because the directories
1648 do not reside on the OSTs.
1652 Description: use i_size_read and i_size_write in 2.6 port
1653 Details : replace inode->i_size access with i_size_read/write()
1656 Frequency : when removing large files
1658 Description: scheduling issue during removal of large Lustre files
1659 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1660 It causes scheduling issues when removing large files (17TB in the
1664 Frequency : only with liblustre clients on XT3
1666 Description: evictions taking too long
1667 Details : allow llrd to evict clients directly on OSTs
1670 Frequency : only on ppc
1672 Description: /proc/fs/lustre/devices broken on ppc
1673 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1674 We should make sure the type of 'index' is loff_t and then cast
1675 explicitly as needed below. Do not assign an explicitly cast
1679 Frequency : only for rhel5
1681 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1682 Details : Modify the target file & which_kernel.
1684 Severity : enhancement
1686 Description: omit set fsid for export NFS
1687 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1688 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1692 Frequency : Always, for kernels after 2.6.16
1693 Description: Fix warning idr_remove called for id=.. which is not allocated.
1694 Details : Last kernels save old s_dev before kill super and not allow
1695 to restore from callback - restore it before call kill_anon_super.
1699 Description: buffer overruns could theoretically occur
1700 Details : llapi_semantic_traverse() modifies the "path" argument by
1701 appending values to the end of the origin string, and a
1702 overrun may occur. Adding buffer overrun check in liblustreapi.
1706 Description: Fix error on 'ls .' at the top of the Lustre mount.
1707 Details : Don't revalidate dentry if it is a root dentry.
1711 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1712 Details : Modify vm-tunables-rhel4.patch.
1716 Description: Kernel config for 2.6.18-vanilla.
1717 Details : Modify targets/2.6-vanilla.target.in.
1718 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1719 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1720 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1721 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1725 Description: improve handling recoverable errors
1726 Details : if request processig with error which can be recoverable on server
1727 request should be resend, otherwise page released from cache and
1732 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1733 Details : Modify target file & which_patch.
1734 A flaw was found in the IA32 system call emulation provided
1735 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1736 value could be stored in the %RAX register, which could trigger an
1737 out-of-bounds system call table access. An untrusted local user
1738 could exploit this flaw to run code in the kernel
1739 (ie a root privilege escalation). (CVE-2007-4573).
1743 Description: O_DIRECT bypasses client statistics.
1744 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1745 read_ahead_stats were updated. copied the stats section from
1746 osc_send_oap_rpc() into async_internal().
1750 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1754 Description: change order of libsysio includes
1755 Details : '#include sysio.h' should always come before '#include xtio.h'
1759 Description: handle "serious error: objid * already exists" more gracefully
1760 Details : If LAST_ID value on disk is smaller than the objects existing in
1761 the O/0/d* directories, it indicates disk corruption and causes an
1762 LBUG(). If the object is 0-length, then we should use the existing
1763 object. This will help to avoid a full fsck in most cases.
1765 Severity : enhancement
1767 Description: adapt the lustre_config script to support the upgrade case
1768 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1769 server targets to 1.6 in parallel.
1773 Description: To avoid grant space > avaible space when the disk is almost
1774 full. Without this patch you might see the error "grant XXXX >
1775 available" or some LBUG about grant, when the disk is almost
1777 Details : In filter_check_grant, for non_grant cache write, we should
1778 check the left space by if (*left > ungranted + bytes), instead
1779 of (*left > ungranted), because only we are sure the left space
1780 is enough for another "bytes", then the ungrant space should be
1781 increase. In client, we should update cl_avail_grant only there
1782 is OBD_MD_FLGRANT in the reply.
1786 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1787 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1788 described in CVE-2007-4573. This problem could allow untrusted
1789 local users to gain root access.
1792 Frequency : when using O_DIRECT and quotas
1794 Description: Incorrect file ownership on O_DIRECT output files
1795 Details : block usage reported by 'lfs quota' does not take into account
1796 files that have been written with O_DIRECT.
1801 Description: touch file failed when fs is not full
1802 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1803 otherwise we can get ENOSP while fs is not full.
1807 Description: parallel lock callbacks
1808 Details : Instead of sending blocking and completion callbacks as separated
1809 requests, adding them to a set and sending in parallel.
1812 Frequency : only for Cray XT3
1813 Bugzilla : 12829/13455
1814 Description: Changing primary group doesn't change the group lustre assigns to
1816 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
1817 overridden with the primary group provided by the group upcall,
1818 whereas the supplied fsgid can be trusted if it is in the list of
1819 supplementary groups returned by the group upcall.
1821 Severity : enhancement
1823 Description: Allow masking D_WARNING, D_ERROR messages from console
1824 Details : Console messages can now be disabled via lnet.printk.
1828 Description: User code with malformed file open parameter crashes client node
1829 Details : Before packing join_file req, all the related reference should be
1830 checked carefully in case some malformed flags cause fake
1831 join_file req on client.
1835 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
1836 Details : ldlm_completion_ast() assumes that a lock is granted when the req
1837 mode is equal to the granted mode. However, it should also check
1838 that LDLM_FL_CP_REQD is not set.
1842 Description: Heavy nfs access might result in deadlocks
1843 Details : After ELC code landed, it is now improper to enqueue any mds
1844 locks under och_sem, because enqueue might want to decide to
1845 cancel open locks for same inode we are holding och_sem for.
1849 Description: Client eviction while running blogbench
1850 Details : A lot of unlink operations with concurrent I/O can lead to a
1851 deadlock causing evictions. To address the problem, the number of
1852 oustanding OST_DESTROY requests is now throttled to
1853 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
1854 callbacks are processed in priority.
1858 Description: enable ACLs on MDS by default
1859 Details : ACLs must be enabled on MDS by default.
1862 Frequency : PPC/PPC64 only
1864 Description: conflicts between asm-ppc64/types.h and lustre_types.h
1865 Details : fix duplicated definitions between asm-ppc64/types.h and
1866 lustre_types.h on PPC.
1869 Frequency : PPC/PPC64 only
1871 Description: asm-ppc/segment.h does not exist
1872 Details : fix compile issue on PPC.
1876 Description: better handle error messages in extents code
1879 Frequency : RHEL4 only
1881 Description: mkfs is very slow on IA64/RHEL4
1882 Details : A performance regression has been discovered in the MPT Fusion
1883 driver between versions 3.02.73rh and 3.02.99.00rh. As a
1884 consequence, we have downgraded the MPT Fusion driver in the RHEL4
1885 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
1887 Severity : enhancement
1889 Description: SNMP support enhancement
1890 Details : Adding total number of sampled request for an MDS node in snmp
1893 Severity : enhancement
1895 Description: Optimize ldlm waiting list processing for PR extent locks
1896 Details : When processing waiting list for read extent lock and meeting read
1897 lock that is same or wider to it that is not contended, skip
1898 processing rest of the list and immediatelly return current
1899 status of conflictness, since we are guaranteed there are no
1900 conflicting locks in the rest of the list.
1904 Description: Time out and refuse to reconnect
1905 Details : When the failover node is the primary node, it is possible
1906 to have two identical connections in imp_conn_list. We must
1907 compare not conn's pointers but NIDs, otherwise we can defeat
1908 connection throttling.
1912 Description: port llog fixes from b1_6 into HEAD
1913 Details : Port llog reference couting and some llog cleanups from b1_6
1914 (bug 10800) into HEAD, for protect from panic and access to already
1915 free llog structures.
1919 Description: Detect stride IO mode in read-ahead
1920 Details : When a client does stride read, read-ahead should detect that and
1921 read-ahead pages according to the detected stride pattern.
1925 Description: data checksumming impacts single node performance
1926 Details : add support for several checksum algorithm. Currently, only CRC32
1927 and Adler-32 are supported. The checksum type can be changed on
1928 the fly via /proc/fs/lustre/osc/*/checksum_type.
1932 Description: use adler32 for page checksums
1933 Details : when available, use the Adler-32 algorithm instead of CRC32 for
1938 Description: build for x2 fails
1939 Details : fix compile issue on Cray systems.
1943 Description: Properly match for duplicate locks
1944 Details : Due to different lock order from skiplists code, we need to
1945 traverse entire list for now
1948 Frequency : only on PPC/SLES10
1950 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
1951 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
1952 be defined. Add a hack in mkfs_lustre.c to work around this compile
1957 Description: LASSERT on MDS when client holding flock lock dies
1958 Details : ldlm pool logic depends on number of granted locks equal to
1959 number of released locks which is not true for flock locks, so
1960 just exclude such locks from consideration.
1964 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
1965 Details : Use fsfilt_sync() for both the whole filesystem sync and
1966 individual file sync to eliminate dangerous inode locking
1967 with I_LOCK that can lead to a deadlock.
1971 Description: performance in 1.6.3
1972 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
1973 sure that 1MB requests are not fragmented by the block layer.
1975 Severity : enhancement
1977 Description: organize the server-side client stats on per-nid basis
1978 Details : Change the structure of stats under obdfilter and mds to
1986 The "uuid"s file would list the uuids of _active_ exports.
1987 And the clear entry is to clear all stats and stale nids.
1989 Severity : enhancement
1991 Description: eliminate client locks in face of contention
1992 Details : file contention detection and lockless i/o implementation
1993 for contended files.
1997 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2000 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2002 Description: MDS may lose file striping (and hence file data) in some cases
2003 Details : If there are additional extended attributes stored on the MDS,
2004 in particular ACLs, SELinux, or user attributes (if user_xattr
2005 is specified for the client mount options) then there is a risk
2006 of attribute loss. Additionally, the Lustre file striping
2007 needs to be larger than default (e.g. striped over all OSTs),
2008 and an additional attribute must be stored initially in the
2009 inode and then increase in size enough to be moved to the
2010 external attribute block (e.g. ACL growing in size) for file
2015 Description: skiplist implementation simplification
2016 Details : skiplists are used to group compatible locks on granted list
2017 that was implemented as tracking first and last lock of each
2018 lock group the patch changes that to using doubly linked lists
2022 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2023 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2024 because LASSERT on both the data supplied by a client, and the
2025 data on disk is dangerous and incorrect.
2027 Severity : enhancement
2029 Description: Slow truncate/writes to huge files at high offsets.
2030 Details : Directly associate cached pages to lock that protect those pages,
2031 this allows us to quickly find what pages to write and remove
2032 once lock callback is received.
2036 Description: more ldlm soft lockups
2037 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2038 starve other threads from the resource lock for a long time in
2039 case of long waiting queue, so change the debug level from
2040 D_OTHER to the less frequently used D_INFO.
2042 Severity : enhancement
2044 Description: add -gid, -group, -uid, -user options to lfs find
2048 Description: Hung threads in invalidate_inode_pages2_range
2049 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2050 once one is completed. As a result, some RPCs are stuck in the
2051 queue and are never sent.
2055 Description: filter threads hungs on waiting journal commit
2056 Details : Cleanup filter group llog code, then only filter group llog will
2057 be only created in the MDS/OST syncing process.
2061 Description: Procfs and llog threads access destoryed import sometimes.
2062 Details : Sync the import destoryed process with procfs and llog threads by
2063 the import refcount and semaphore.
2065 Severity : enhancement
2067 Description: openlock cache of b1_6 port to HEAD
2072 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2073 Details : If insertion of an extent fails, then discard the inode
2074 preallocation and free data blocks else it can lead to duplicate
2079 Description: don't always update ctime in ext3_xattr_set_handle()
2080 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2081 In some cases the ctime should not be updated, for example for
2082 2.0->1.8 compatibility it is necessary to delete an xattr and it
2083 should not update the ctime.
2087 Bugzilla : 15713/16362
2088 Description: Assertion in iopen_connect_dentry in 1.6.3
2089 Details : looking up an inode via iopen with the wrong generation number can
2090 populate the dcache with a disconneced dentry while the inode
2091 number is in the process of being reallocated. This causes an
2092 assertion failure in iopen since the inode's dentry list contains
2093 both a connected and disconnected dentry.
2097 Description: assertion failure in ldlm_handle2lock()
2098 Details : fix a race between class_handle_unhash() and class_handle2object()
2099 introduced in lustre 1.6.5 by bug 13622.
2104 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2105 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2110 Description: oops in sd_iostats_seq_show()
2111 Details : unloading/reloading the scsi low level driver triggers a kernel
2112 bug when trying to access the sd iostat file.
2117 Description: Kernel panics during QLogic driver reload
2118 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2119 patch, causing memory corruption.
2124 Description: journal_dev option does not work in b1_6
2125 Details : pass mount option during pre-mount.
2127 Severity : enhancement
2129 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2130 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2131 extent information of a file. It can be used to map logical blocks
2132 in a file to physical blocks in the block device.
2136 Description: LDLM soft lockups - improvement
2137 Details : It is be possible to send the lock handle along with each read
2138 or write request because the client is already doing a lock match
2139 itself so there isn't any reason the OST should have to re-do that
2143 Frequency : only on Cray X2
2145 Description: X2 build failures
2146 Details : fix build failures on Cray X2.
2150 Description: xid & resent requests
2151 Details : Initialize RPC XID from clock at startup (randomly if clock is
2154 Severity : enhancement
2156 Description: Add lustre_start utility to start or stop multiple Lustre servers
2161 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2162 Details : In case of memory pressure, list_del() can be called twice on
2163 req->rq_history_list, causing a kernel oops.
2167 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2168 Details : fix stack overflow in the distributed lock manager by defering
2169 export eviction after a failed AST to the elt thread instead of
2170 handling it in the dlm interpret routine.
2174 Description: Convert some comments to new format.
2175 Details : Update documenting comments to match doxygen conventions.
2179 Description: Grammar fixes.
2180 Details : A couple of trivial spelling fixes.
2184 Description: OSD_COUNTERS-mandatory
2185 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2186 to simplify the code.
2190 Description: simplify cmm_device freeing logic.
2191 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2195 Description: Add lockdep support to dt_object_operations locking interface.
2196 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2197 parameter indicating lock ordering. Update mdd code to use new
2202 Description: Introduce failloc constants for lockless IO tests.
2203 Details : Add two new failloc constants to test lockless IO. Only one of
2204 them in implemented---another is checked in yet to be landed
2209 Description: Add lockdep support for inode mutex.
2210 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2211 in the situations where Lustre has to lock more than one inode
2216 Description: Add optional invariants checking support.
2217 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2218 configure switch. This macro is to be used for consistency and
2219 sanity checks that are too expensive to be left in `production'
2224 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2225 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2230 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2231 Details : Use spin_lock_nested() in (the only) situation where more than
2232 one ldlm_lock is locked simultaneously. Also, fix possible
2233 dead-lock in ldlm_lock_change_resource() by enforcing particular
2238 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2239 Details : Instead of specifying each ldlm_lock call-back through separate
2240 parameter, wrap them into struct ldlm_callback_suite.
2244 Description: Kill join_lru obd method and its callers.
2245 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2246 in memory---a requirement implemented through ->o_join_lru() obd
2247 method in HEAD. Remove this method and its users.
2251 Description: Add asynchronous ldlm ENQUEUE completion handler.
2252 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2253 case that stock ldlm_completion_ast() cannot handle as it waits
2254 until lock is granted. Introduce new ldlm_completion_ast_async()
2255 for this. Also comment ldlm_completion_ast().
2259 Description: ldlm_error <-> errno conversion.
2260 Details : Add functions to map (rather arbitrary) between LDLM error codes
2261 and standard errno values. CLIO needs this to prevent LDLM specific
2262 constants from escaping ldlm and osc.
2266 Description: Kill unused ldlm_handle2lock_ns() function.
2267 Details : Kill unused ldlm_handle2lock_ns() function.
2271 Description: Add lu_ref support to ldlm_lock
2272 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2273 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2274 and ldlm_resource. LDLM interface has to be changed, because code that
2275 releases a reference on a lock, has to "know" what reference this is.
2276 In the most frequent case
2278 lock = ldlm_handle2lock(handle);
2280 LDLM_LOCK_PUT(lock);
2282 no changes are required. When any other reference (received _not_ from
2283 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2284 instead of LDLM_LOCK_PUT().
2286 Arguably, changes are pervasive, and interface requires some discipline
2287 for proper use. On the other hand, it was very instrumental in finding
2288 a few leaked lock references.
2292 Description: Add ldlm_lock_addref_try().
2293 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2294 attempts to addref a lock that might be being canceled
2299 Description: Add ldlm_weigh_callback().
2300 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2301 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2302 hard-coded `number of pages' logic.
2306 Description: Add lockdep annotations to llog code.
2307 Details : Use appropriately tagged _nested() locking calls in the places
2308 where llog takes more than one ->lgh_lock lock.
2312 Description: Add loi_kms_set().
2313 Details : Wrap kms updates into a helper function.
2317 Description: Constify instances of struct lsm_operations.
2318 Details : Constify instances of struct lsm_operations.
2322 Description: lu_conf support.
2323 Details : On a server, a file system object is uniquely identified
2324 by a fid, which is sufficient to locate and load all object
2325 state (inode). On a client, on the other hand, more data are
2326 necessary instantiate an object. Change lu_object_find() and
2327 friends to take additional `lu_conf' argument describing object.
2328 Typically this includes layout information.
2332 Description: lu_context fixes.
2333 Details : Introduce new lu_context functions that are needed on the client
2334 side, where some system threads (ptlrpcd) are shared by multiple
2335 modules, and so cannot be stopped during module shutdown.
2339 Description: Add start and stop methods to lu_device_type_operations.
2340 Details : Introduce two new methods in lu_device_type_operations, that are
2341 invoked when first instance of a given type is created and last one
2342 is destroyed respectively. This is need by CLIO.
2346 Description: Add lu_ref support to struct lu_device.
2347 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2348 track leaked references.
2352 Description: Introduce lu_kmem_descr.
2353 Details : lu_kmem_descr and its companion interface allow to create
2354 and destroy a number of kmem caches at once.
2358 Description: Fix lu_object finalization race.
2359 Details : Fix a race between lu_object_find() finding an object and its
2360 concurrent finalization. This race is (most likely) not possible
2361 on the server, but might happen on the client.
2365 Description: Introduce lu_ref interface.
2366 Details : lu_ref is a debugging module allowing to track references to
2367 a given object. It is quite cpu expensive, and has to be
2368 explicitly enabled with --enable-lu_ref. See usage description
2373 Description: Factor lu_site procfs stats into a separate function.
2374 Details : Separate lu_site stats printing code into a separate function
2375 that can be reused on a client.
2379 Description: Constify instances of struct {lu,dt,md}_device_operations.
2380 Details : Constify instances of struct {lu,dt,md}_device_operations.
2384 Description: Introduce struct md_site and move meta-data specific parts of
2385 struct lu_site here.
2386 Details : Move md-specific fields out of struct lu_site into special struct
2387 md_site, so that lu_site can be used on a client.
2391 Description: Kill mdd_lov_destroy().
2392 Details : Remove unused mdd code.
2396 Description: Add st_block checking to multistat.c.
2397 Details : Add st_block checking to multistat.c.
2401 Description: Add lu_ref support to struct obd_device.
2402 Details : Add lu_ref tracking to obd_device.
2406 Description: Kill obd_set_fail_loc().
2407 Details : Remove unused code.
2411 Description: Add special type for ptlrpc_request interpret functions.
2412 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2413 there. Actual usage will be in CLIO.
2417 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2418 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2419 doesn't work with lockdep.
2423 Description: Add rwv.c test program.
2424 Details : New testing program exercising readv(2) and writev(2) (Qian).
2428 Description: Add sendfile.c test program.
2429 Details : New testing program exercising sendfile(2) (Jay).
2433 Description: Ratelimit a message that can be very frequent.
2434 Details : Ratelimit a memory allocation failure message that can
2439 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2440 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2444 Description: Liblustre build fixes.
2445 Details : Liblustre build fixes.
2449 Description: libcfs: add cfs_{need,cond}_resched() interface.
2450 Details : libcfs: add cfs_{need,cond}_resched() definition and
2451 implementations for Linux, NT, and liblustre.
2453 Severity : enhancement
2455 Description: More exported tunables for mballoc
2456 Details : Add support for tunable preallocation window and new tunables for
2457 large/small requests
2461 Description: Detect corruption of block bitmap and checking for preallocations
2462 Details : Checks validity of on-disk block bitmap. Also it does better
2463 checking of number of applied preallocations. When corruption is
2464 found, it turns filesystem readonly to prevent further corruptions.
2468 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2469 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2470 window to 0. If it does hit cache miss, and read-pattern is still
2471 stride-io mode, does not reset the stride window, but also does not
2472 increase the stride window length in this case.
2476 Frequency : only for big-endian servers
2477 Description: Check if system is big-endian while mounting fs with extents feature
2478 Details : Mounting a filesystem with extents feature will fail on big-endian
2479 systems since ext3-based ldiskfs is not supported on big-endian
2480 systems. This can be over-riden with "bigendian_extents" mount option.
2482 Severity : enhancement
2484 Description: The root squash functionality
2485 Details : A security feature, which is to prevent users from being able
2486 to mount lustre on their desktop, run as root, and delete
2487 all of the files in the filesystem. The goal is accomplished by
2488 remapping user id (UID) and group id (GID) of the root user to
2489 a UID and GID specified by the system administartor via Lustre
2490 configuration management server (MGS). The functionality also
2491 allows to specify sets of clients for which the remapping does
2496 Description: Excessive recovery window
2497 Details : With AT enabled, the recovery window can be excessively long (6000+
2498 seconds). To address this problem, we no longer use
2499 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2500 timeout no longer depends on the service time, it is set to
2501 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2502 time via pb_service_time.
2506 Description: Watchdog triggered on MDS failover
2507 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2508 the OSTs know that the MDS "UUID" can be reused for the same export
2509 from a different NID, so we do not need to wait for the export to be
2513 Frequency : rare, only if using MMP with Linux RAID
2515 Description: MMP doesn't work with Linux RAID
2516 Details : While using HA for Lustre servers with Linux RAID, it is possible
2517 that MMP will not detect multiple mounts. To make this work we
2518 need to unplug the device queue in RAID when the MMP block is being
2519 written. Also while reading the MMP block, we should read it from
2520 disk and not the cached one.
2522 Severity : enhancement
2524 Description: open file using fid
2525 Details : A file can be opened using just its fid, like
2526 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2529 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2532 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2533 Details : add proper locking for creation of jbd_4k slab cache
2537 Description: MMP check in ext3_remount() fails without displaying any error
2538 Details : When multiple mount protection fails during remount, proper error
2541 Severity : enhancement
2543 Description: Allow stripe size to be up to 4G-64k
2544 Details : Fix math logic to allow large stripe sizes.
2548 Description: add check for >8TB ldiskfs filesystems
2549 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2550 Don't allow >8TB ldiskfs filesystems to be mounted without
2551 force_over_8tb mount option
2556 Descriptoin: OSS complains "too many blocks" and crashes
2557 Details : In filter_commitrw_write():
2558 1. lquota_chkquota();
2559 2. obdo_from_inode();
2560 3. lquota_pending_commit();
2561 "2." has changed uid and gid in this case, then caused
2562 lquota_chkquota() and lquota_pending_commit() to use
2563 different uid and gid. That is the root of the bug.
2567 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2568 Details : Detect and print out the 'stripe count = -1' case properly.
2572 Description: Out or order replies might be lost on replay
2573 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2574 request with tid smaller then one currently being added, add it
2575 to the start, not end of the list.
2577 --------------------------------------------------------------------------------
2579 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2581 * Support for kernels:
2582 2.6.5-7.283 (SLES 9),
2583 2.6.9-55.EL (RHEL 4),
2584 2.6.16.46-0.14 (SLES 10),
2585 2.6.18.8 vanilla (kernel.org)
2586 * Client support for unpatched kernels:
2587 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2588 2.6.16 - 2.6.22 vanilla (kernel.org)
2589 * Due to recently discovered recovery problems, we do not recommend
2590 using patchless RHEL 4 clients with this or any earlier release.
2591 * Recommended e2fsprogs version: 1.39.cfs8
2592 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2593 * Starting with this release, the ldiskfs backing filesystem required
2594 by Lustre is now in its own package, lustre-ldiskfs. This package
2595 should be installed. It is versioned separately from Lustre and
2596 may be released separately in future.
2600 Description: block reactivating mgc import until all deactivates complete
2601 Details : Fix race when failing back MDT/MGS to itself (testing)
2604 Frequency : at statup only
2606 Description: mds_lov_synchronize race leads to various problems
2607 Details : simultaneous MDT->OST connections at startup can cause the
2608 sync to abort, leaving the OSC in a bad state.
2610 Severity : enhancement
2612 Description: add optional extra BUILD_VERSION info
2613 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2614 to override the lustre version.
2617 Frequency : 2.6.18 servers only
2619 Description: ll_kern_mount() doesn't release the module reference
2620 Details : The ldiskfs module reference count never drops down to 0
2621 because ll_kern_mount() doesn't release the module reference.
2626 Description: server LBUG when using old ost_num_threads parameter
2627 Details : Accept the old ost_num_threads parameter but warn that it
2628 is deprecated, and fix an off-by-one error that caused an LBUG.
2633 Description: Transient SCSI error results in persistent IO issue
2634 Details : iobuf->dr_error is not reinitialized to 0 between two
2638 Frequency : sometimes when underlying device returns I/O errors
2640 Description: OSTs not going read-only during write failures
2641 Details : OSTs are not remounted read-only when the journal commit threads
2642 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2643 instead of the ext3 wrappers.
2647 Description: poor connect scaling with increasing client count
2648 Details : Don't run filter_grant_sanity_check for more than 100 exports
2649 to improve scaling for large numbers of clients.
2652 Frequency : SLES10 only
2654 Description: sanity-quota.sh quotacheck failed: rc = -22
2655 Details : Quotas cannot be enabled on SLES10.
2658 Frequency : liblustre clients only
2660 Description: getdirentries does not give error when run on compute nodes
2661 Details : getdirentries does not fail when the size specified as an argument
2662 is too small to contain at least one entry
2664 Severity : enhancement
2666 Description: Add LNET router traceability for debug purposes
2667 Details : If a checksum failure occurs with a router as part of the
2668 IO path, the NID of the last router that forwarded the bulk data
2669 is printed so it can be identified.
2674 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2675 Details : Due to a race condition, liblustre clients were occasionally
2676 evicted incorrectly.
2678 Severity : enhancement
2680 Description: lfs setstripe use optional parameters instead of postional
2683 Severity : enhancement
2685 Description: Nanosecond timestamp support for ldiskfs
2686 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2687 resolution timestamps. There is not yet support for this at
2688 the Lustre filesystem level.
2691 Frequency : during server recovery
2693 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2694 Details : request with rq_no_resend flag not awake l_wait_event if they get
2698 Frequency : nfs export on patchless client
2700 Description: connectathon hang when test nfs export over patchless client
2701 Details : Disconnected dentry cannot be found with lookup, so we do not need
2702 to unhash it or make it invalid
2705 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2706 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2707 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2712 Description: open req refcounting wrong on reconnect
2713 Details : If reconnect happened between getting open reply from server and
2714 call to mdc_set_replay_data in ll_file_open, we will schedule
2715 replay for unreferenced request that we are about to free.
2716 Subsequent close will crash in variety of ways.
2717 Check that request is still eligible for replay in
2718 mdc_set_replay_data().
2723 Description: disable writes to filesystem when reading health_check file
2724 Details : the default for reading the health_check proc file has changed
2725 to NOT do a journal transaction and write to disk, because this
2726 can cause reads of the /proc file to hang and block HA state
2727 checking on a healthy but otherwise heavily loaded system. It
2728 is possible to return to the previous behaviour during configure
2729 with --enable-health-write.
2731 Severity : enhancement
2733 Description: 64-bit inode version
2734 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2735 to the inode. This will be required for version-based recovery.
2740 Description: MDS fails to start if a duplicate client export is detected
2741 Details : in some rare cases it was possible for a client to connect to
2742 an MDS multiple times. Upon recovery the MDS would detect this
2743 and fail during startup. Handle this more gracefully.
2745 Severity : enhancement
2747 Description: Add -o localflock option to simulate old noflock
2749 Details : This will achieve local-only flock/fcntl locks
2755 Description: log_commit_thread vs filter_destroy race leads to crash
2756 Details : Take import reference before releasing llog record semaphore
2761 Description: Wrong request locking in request set processing
2762 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2763 imp_delayed_list, in this place should be used imp_lock.
2766 Frequency : when reconnection
2768 Description: Grant Leak when osc reconnect to OST
2769 Details : When osc reconnect ost, OST(filter) should check whether it
2770 should grant more space to client by comparing fed_grant and
2771 cl_avail_grant, and return the granted space to client instead
2772 of "new granted" space, because client will call osc_init_grant
2773 to update the client grant space info.
2776 Frequency : when client reconnect to OST
2778 Description: Grant Leak when osc do resend and replay bulk write
2779 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2780 bulk write request, because the grant info while be sync between
2781 OSC and OST when reconnect, and we should ignore the grant info
2782 these of resend/replay write req.
2787 Description: Grant space more than avaiable left space sometimes.
2788 Details : When then OST is about to be full, if two bulk writing from
2789 different clients came to OST. Accord the avaliable space of the
2790 OST, the first req should be permitted, and the second one
2791 should be denied by ENOSPC. But if the seconde arrived before
2792 the first one is commited. The OST might wrongly permit second
2793 writing, which will cause grant space > avaiable space.
2796 Frequency : when client is evicted
2798 Description: Grant might be wrongly erased when osc is evicted by OST
2799 Details : when the import is evicted by server, it will fork another
2800 thread ptlrpc_invalidate_import_thread to invalidate the
2801 import, where the grant will be set to 0. While the original
2802 thread will update the grant it got when connecting. So if
2803 the former happened latter, the grant will be wrongly errased
2804 because of this race.
2809 Description: Checking Stale with correct fid
2810 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
2811 to check whether it is stale, because sometimes, we want the
2812 enqueue happened anyway, and op_data.fid2 will not be initialized.
2814 Severity : enhancement
2816 Description: update patchless client
2817 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
2820 Frequency : only with 2.4 kernel
2822 Description: random memory corruption
2823 Details : size of struct ll_inode_info is to big for union inode.u and this
2824 can be cause of random memory corruption.
2829 Description: Memory leak in recovery
2830 Details : Lov_mds_md was not free in an error handler in mds_create_object.
2831 It should also check obd_fail before fsfilt_start, otherwise if
2832 fsfilt_start return -EROFS,(failover mds during mds recovery).
2833 then the req will return with repmsg->transno = 0 and rc = EROFS.
2834 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
2835 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
2836 be freed no matter whether fsfilt_commit success or not.
2839 Frequency : only with huge count clients
2841 Description: Prevents from taking the superblock lock in llap_from_page for
2843 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
2844 for llap_from_page call in ll_removepage prevents from taking the
2845 superblock lock for a soon died page.
2850 Description: Not check open intent error before release open handle
2851 Details : in some rare cases, the open intent error is not checked before
2852 release open handle, which may cause
2853 ASSERTION(open_req->rq_transno != 0), because it tries to release
2854 the failed open handle.
2859 Description: Set cat log bitmap only after create log success.
2860 Details : in some rare cases, the cat log bitmap is set too early. and it
2861 should be set only after create log success.
2865 Description: Accessing a block bevice can re-enable I/O when Lustre is
2866 tearing down a device.
2867 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
2872 Description: service threads may hog cpus when there are a lot of requests
2873 Details : Insert cond_resched to give other threads a chance to use some CPU
2878 Description: the cat log was not initialized in recovery
2879 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
2880 unlink log on mds will not be initialized until mds post
2881 recovery. And also in mds post recovery, the unlink log will
2882 initialization will be done asynchronausly, so there will be race
2883 between add unlink log and unlink log initialization.
2887 Description: brw_stats were being printed incorrectly
2888 Details : brw_stats were being printed as log2 but all of them were not
2889 recorded as log2. Also remove some code duplication arising from
2890 filter_tally_{read,write}.
2894 Frequency : rare, only in recovery.
2895 Description: ASSERTION(req->rq_type != LI_POISON) failed
2896 Details : imp_lock should be held while iterating over imp_sending_list for
2897 prevent destroy request after get timeout in ptlrpc_queue_wait.
2901 Description: replay-single.sh test 52 fails
2902 Details : A lock's skiplist need to be cleanup when it being unlinked
2903 from its resource list.
2907 Description: Short directio read returns full requested size rather than
2909 Details : Direct I/O operations should return actual amount of bytes
2910 transferred rather than requested size.
2912 Severity : enhancement
2914 Description: metadata RPC reduction (e.g. for rm performance)
2915 Details : decrease the amount of synchronous RPC between clients and servers
2916 by canceling conflicing lock before the operation on the client
2917 and packing thier handles into the main operation RPC to server.
2919 Severity : enhancement
2921 Description: Async OSC create to avoid the blocking unnecessarily.
2922 Details : If a OST has no remain object, system will block on the creating
2923 when need to create a new object on this OST. Now, ways use
2924 pre-created objects when available, instead of blocking on an
2925 empty osc while others are not empty. If we must block, we block
2926 for the shortest possible period of time.
2930 Description: improve handling recoverable errors
2931 Details : if request processig with error which can be recoverable on server
2932 request should be resend, otherwise page released from cache and
2935 Severity : enhancement
2937 Description: refine locking for avoid write wrong info into lov_objid file
2938 Details : fix possible races with add new target and write/update data in
2941 --------------------------------------------------------------------------------
2943 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
2948 Frequency : on some architectures
2950 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
2951 Details : Uninitialized flags sometimes cause configuration commands to
2955 Frequency : patchless clients only
2957 Description: missing __iget() symbol export
2958 Details : The __iget() symbol export is missing. To avoid the need for
2959 this on patchless clients the deathrow inode reaper is turned
2960 off, and we depend on the VM to clean up old inodes. This
2961 dependency was during via the fix for bug 12181.
2963 --------------------------------------------------------------------------------
2965 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
2967 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
2968 INTEROPERATE with older versions automatically. In many cases a
2969 special upgrade step is needed. Please read the
2970 user documentation before upgrading any part of a live system.
2971 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
2972 version will not interoperate with 1.6 betas before beta5 (1.5.95).
2973 * WARNING: Lustre configuration and startup changes are required with
2974 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
2978 Severity : enhancement
2980 Description: MountConf
2981 Details : Lustre configuration is now managed via mkfs and mount
2982 commands instead of lmc and lconf. New obd types (MGS, MGC)
2983 are added for dynamic configuration management. See
2984 https://mail.clusterfs.com/wikis/lustre/MountConf for
2987 Severity : enhancement
2989 Description: dynamic OST addition
2990 Details : OSTs can now be added to a live filesystem
2992 Severity : enhancement
2994 Description: startup order invariance
2995 Details : MDTs and OSTs can be started in any order. Clients only
2996 require the MDT to complete startup.
2998 Severity : enhancement
3000 Description: parallel, asynchronous orphan cleanup
3001 Details : orphan cleanup is now performed in separate threads for each
3002 OST, allowing parallel non-blocking operation.
3004 Severity : enhancement
3006 Description: optimized stripe assignment
3007 Details : stripe assignments are now made based on ost space available,
3008 ost previous usage, and OSS previous usage, in order to try
3009 to optimize storage space and networking resources.
3011 Severity : enhancement
3013 Description: Permanently set tunables
3014 Details : All writable /proc/fs/lustre tunables can now be permanently
3015 set on a per-server basis, at mkfs time or on a live system.
3017 Severity : enhancement
3019 Description: Lustre message v2
3020 Details : Add lustre message format v2.
3022 Severity : enhancement
3024 Description: client OST exclusion list
3025 Details : Clients can be started with a list of OSTs that should be
3026 declared "inactive" for known non-responsive OSTs.
3030 Description: SPEC SFS validation failure on NFS v2 over lustre.
3031 Details : Changes the blocksize for regular files to be 2x RPC size,
3032 and not depend on stripe size.
3034 Severity : enhancement
3036 Description: Multiple MD RPCs in flight.
3037 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3038 To avoid overly-overloading MDS, introduce a limit on number of
3039 MDS RPCs in flight for a single client and add /proc controls
3040 to adjust this limit.
3042 Severity : enhancement
3044 Description: client read/write statistics
3045 Details : Add client read/write call usage stats for performance
3046 analysis of user processes.
3047 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3048 file access. extents_stats shows chunk size distribution.
3049 extents_stats_per_process show chunk size distribution per
3052 Severity : enhancement
3054 Description: mds statistics
3055 Details : Add detailed mds operations statistics in
3056 /proc/fs/lustre/mds/*/stats.
3060 Description: Failure of copying files with lustre special EAs.
3061 Details : Client side always return success for setxattr call for lustre
3062 special xattr (currently only "trusted.lov").
3067 Description: Refcount LNET uuids
3068 Details : The global LNET uuid list grew linearly with every startup;
3069 refcount repeated list entries instead of always adding to
3072 Severity : enhancement
3074 Description: Dynamic service threads
3075 Details : Within a small range, start extra service threads
3076 automatically when the request queue builds up.
3079 Frequency : mixed-endian client/server environments
3081 Description: mixed-endian crashes
3082 Details : The new msg_v2 system had some failures in mixed-endian
3085 Severity : enhancement
3087 Description: Easy OST removal
3088 Details : OSTs can be permanently deactivated with e.g. 'lctl
3089 conf_param lustre-OST0001.osc.active=0'
3091 Severity : enhancement
3093 Description: MGS proc entries
3094 Details : Added basic proc entries for the MGS showing what filesystems
3097 Severity : enhancement
3099 Description: provide MGS failover
3100 Details : Added config lock reacquisition after MGS server failover.
3102 Severity : enhancement
3104 Description: add Linux 2.4 support
3105 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3109 Description: a large application tries to do I/O to the same resource and dies
3110 in the middle of it.
3111 Details : Check the req->rq_arrival time after the call to
3112 ost_brw_lock_get(), but before we do anything about
3113 processing it & sending the BULK transfer request. This
3114 should help move old stale pending locks off the queue as
3115 quickly as obd_timeout.
3118 Frequency : when an incorrect nid is specified during startup
3120 Description: ptlrpc connect to non-existant node causes kernel crash
3121 Details : LNET can't be re-entered from an event callback, which
3122 happened when we expire a message after the export has been
3123 cleaned up. Instead, hand the zombie cleanup off to another
3126 Severity : enhancement
3128 Description: plain/inodebits lock performance improvement
3129 Details : Grouping plain/inodebits in granted list by their request modes
3130 and bits policy, thus improving the performance of search through
3134 Frequency : only if OST filesystem is corrupted
3136 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3137 Details : for a short time RPCs with bulk IO are in the replay list,
3138 but replay of bulk IOs is unimplemented. If the OST filesystem
3139 is corrupted due to disk cache incoherency and then replay is
3140 started it is possible to trip an assertion. Avoid putting
3141 committed RPCs into the replay list at all to avoid this issue.
3144 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3146 Description: System hang on startup
3147 Details : This bug allowed the liblustre (e.g. catamount) client to
3148 return to the app before handling all startup RPCs. This
3149 could leave the node unresponsive to lustre network traffic
3150 and manifested as a server ptllnd timeout.
3152 Severity : enhancement
3154 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3155 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3156 boolean to control whether to print peer debug info when a
3157 client's RPC times out.
3160 Frequency : only for kernels with patches from Lustre below 1.4.3
3162 Description: Remove old rdonly API
3163 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3166 Frequency : only for devices with external journals
3168 Description: Set external device read-only also
3169 Details : During a commanded failover stop, we set the disk device
3170 read-only while the server shuts down. We now also set any
3171 external journal device read-only at the same time.
3174 Frequency : when upgrading from 1.4 while trying to change parameters
3176 Description: The wrong (new) MDC name was used when setting parameters for
3177 upgraded MDT's. Also allows changing of OSC (and MDC)
3178 parameters if --writeconf is specified at tunefs upgrade time.
3181 Frequency : when setting specific ost indicies
3183 Description: QOS code breaks on skipped indicies
3184 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3185 created with --index need not be sequential.
3187 Severity : enhancement
3189 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3190 Details : The uninit_groups feature works in conjunction with the kernel
3191 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3192 up the pass1 processing of e2fsck. This is a read-only feature
3193 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3194 mount filesystems that have had this feature enabled.
3196 Severity : enhancement
3198 Description: Improve multi-block allocation algorithm to avoid fragmentation
3199 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3200 allocation locality and avoid filesystem fragmentation.
3202 ------------------------------------------------------------------------------
3204 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3206 * Support for kernels:
3207 2.4.21-47.0.1.EL (RHEL 3)
3208 2.6.5-7.283 (SLES 9)
3209 2.6.9-42.0.10.EL (RHEL 4)
3210 2.6.12.6 vanilla (kernel.org)
3211 2.6.16.27-0.9 (SLES 10)
3212 * Recommended e2fsprogs version: 1.39.cfs5
3214 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3218 Frequency : occasional, depends on client load and configuration
3219 Bugzilla : 12181, 12203
3220 Description: data loss for recently-modified files
3222 Details : In some cases it is possible that recently written or created
3223 files may not be written to disk in a timely manner (this should
3224 normally be within 30s unless client IO load is very high).
3225 The problem appears as zero-length files or files that are a
3226 multiple of 1MB in size after a client crash or client eviction
3227 that are missing data at the end of the file.
3229 This problem is more likely to be hit on clients where files are
3230 repeatedly created and unlinked in the same directory, clients
3231 have a large amount of RAM, have many CPUs, the filesystem has
3232 many OSTs, the clients are rebooted frequently, and/or the files
3233 are not accessed by other nodes after being written.
3235 The presence of the problem can be detected by looking at
3236 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3237 smaller than the second (nr_unused) then dirty files will not
3238 be flushed automatically to disk. "sync; sleep 10" should be
3239 run several times on the node before unmounting it to update
3240 Lustre (this is also safe to run on nodes without this problem).
3242 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3243 that can cause this same problem, so customers using that kernel
3244 also need to update the kernel in addition to Lustre. In order
3245 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3247 It is normal that files written just before a client crash (less
3248 than 30s) may not yet have been flushed to disk, even for local
3252 Frequency : frequent on thin XT3 nodes
3254 Description: UUID collision on thin XT3 Linux nodes
3255 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3256 randomly, since we relied on an insufficiently-seeded PRNG.
3261 Description: OSS hangs after "All ost request buffers busy"
3262 Details : A deadlock between quota and journal operations caused OSS
3263 hangs after printing "All ost request buffers busy."
3266 Frequency : always on liblustre builds
3268 Description: Cleanup compiler warnings on liblustre
3271 Frequency : always on liblustre builds on XT3
3273 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3277 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3278 > 32000 subdirectories
3279 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3280 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3281 subdirectory count crosses 32000. This will aid e2fsck to
3282 correctly handle more than 32000 subdirectories.
3285 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3287 Description: System hang on startup
3288 Details : This bug allowed the liblustre (e.g. catamount) client to
3289 return to the app before handling all startup RPCs. This
3290 could leave the node unresponsive to lustre network traffic
3291 and manifested as a server ptllnd timeout.
3293 Severity : enhancement
3295 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3296 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3297 boolean to control whether to print peer debug info when a
3298 client's RPC times out.
3303 Description: make O_SYNC working on 2.6 kernels
3304 Details : 2.6 kernels use different method for mark pages for write,
3305 so need add a code to lustre for O_SYNC work.
3310 Description: Failure to close file and release space on NFS
3311 Details : Put inode details into lock acquired in ll_intent_file_open.
3312 Use mdc_intent_lock in ll_intent_open to properly
3313 detect all kind of errors unhandled by mdc_enqueue.
3318 Description: proc file read during shutdown sometimes raced obd removal,
3320 Details : Add lock to prevent obd access after proc file removal.
3323 Frequency : Only for files larger than 4GB on 32-bit clients.
3325 Description: improperly doing page alignment of locks
3326 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3327 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3332 Description: RPCs being resent when they shouldn't be
3333 Details : Some RPCs that should not be resent are being resent. This
3334 can cause inconsistencies in the RPC state machine. Do not
3335 resend such requests.
3338 Frequency : rare, only with NFS export
3340 Description: Crash on NFS re-export node
3341 Details : under very unusual load conditions an assertion is hit in
3342 ll_intent_file_open()
3345 Frequency : only if OST filesystem is corrupted
3347 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3348 Details : for a short time RPCs with bulk IO are in the replay list,
3349 but replay of bulk IOs is unimplemented. If the OST filesystem
3350 is corrupted due to disk cache incoherency and then replay is
3351 started it is possible to trip an assertion. Avoid putting
3352 committed RPCs into the replay list at all to avoid this issue.
3357 Description: large O_DIRECT requests fail under memory pressure/fragmentation
3358 Details : Large single O_DIRECT read and write calls can fail to allocate
3359 a sufficiently large buffer to process the request. In case of
3360 allocation failure the allocation is retried with a smaller
3361 buffer and broken into smaller requests.
3363 Severity : enhancement
3365 Description: Add -o localflock option to simulate old noflock behaviour.
3366 Details : This will achieve local-only flock/fcntl locks coherentness.
3371 Description: versioning check is incomplete
3372 Details : Checking the version difference of client vs. server, report
3373 error if the gap is too big.
3378 Description: add support PG_writeback bit
3379 Details : add support for PG_writeback bit for Lustre, for more carefull
3380 work with page cache in 2.6 kernel. This also fix some deadlocks
3381 and remove hack for work O_SYNC with 2.6 kernel.
3383 Severity : enhancement
3385 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3386 Details : The uninit_groups feature works in conjunction with the kernel
3387 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3388 up the pass1 processing of e2fsck. This is a read-only feature
3389 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3390 mount filesystems that have had this feature enabled.
3392 Severity : enhancement
3394 Description: Improve multi-block allocation algorithm to avoid fragmentation
3395 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3396 allocation locality and avoid filesystem fragmentation.
3398 ------------------------------------------------------------------------------
3400 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
3402 * Support for kernels:
3403 2.6.9-42.0.3.EL (RHEL 4)
3404 2.6.5-7.276 (SLES 9)
3405 2.4.21-47.0.1.EL (RHEL 3)
3406 2.6.12.6 vanilla (kernel.org)
3407 2.6.16.21-0.8 (SLES10)
3408 * Recommended e2fsprogs version: 1.39.cfs2-0
3410 * The backwards-compatible /proc/sys/portals symlink has been removed
3411 in this release. Before upgrading, please ensure that you change
3412 any configuration scripts or /etc/sysctl.conf files that access
3413 /proc/sys/portals/* or sysctl portals.* to use the corresponding
3414 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
3415 in advance of the upgrade on any system running Lustre 1.4.6 or
3416 newer, since /proc/sys/lnet was added in that version.
3417 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3421 Frequency : only when quota is used
3423 Description: avoid scanning export list for quota master
3424 Details : Change the algorithms to avoid scanning export list in order
3425 to improve the efficiency.
3428 Frequency : MDS failover only, very rarely
3430 Description: "went back in time" messages on mds failover
3431 Details : The greatest transno may be lost when the current operation
3432 finishes with an error (transno==0) and the client's last_rcvd
3433 record is over-written. Save the greatest transno in the
3434 mds_last_transno for this case.
3437 Frequency : always for specific kernels and striping counts
3439 Description: client may get "Matching packet too big" without ACL support
3440 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
3441 when trying to access files in certain configurations. The
3442 clients should in fact be denied when mounting because they do
3443 not understand ACLs.
3446 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
3448 Description: many clients connecting with IO in progress causes connect timeouts
3449 Details : Avoid synchronous journal commits to avoid delays caused by many
3450 clients connecting/disconnecting when bulk IO is in progress.
3451 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
3452 OST_IO_PORTAL to avoid delays behind potentially many pending
3456 Frequency : occasionally with multiple writers to a single file
3458 Description: shared writes to file may result in wrong size reported by stat()
3459 Details : Allow growing of kms when extent lock is cancelled
3462 Frequency : always with random mmap IO to multi-striped file
3464 Description: mmap write might be lost if we are writing to a 'hole' in stripe
3465 Details : Only if the hole is at the end of OST object so that kms is too
3466 small. Fix is to increase kms accordingly in ll_nopage.
3469 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
3471 Description: writes to a missing object would leak memory on the OST
3472 Details : If there is an inconsistency between the MDS and OST filesystems,
3473 such that the MDS references an object that doesn't exist, writes
3474 to that object will leak memory due to incorrect cleanup in the
3475 error handling path, eventually running out of memory on the OST.
3480 Description: Creating too long symlink causes lustre errors
3481 Details : Check symlink and name lengths before sending requests to MDS.
3484 Frequency : only if flock is enabled (not on by default)
3486 Description: posix locks not released on fd closure on 2.6.9+
3487 Details : We failed to add posix locks to list of inode locks on 2.6.9+
3488 kernels, this caused such locks not to be released on fd close and
3489 then assertions on fs unmount about still used locks.
3492 Frequency : MDS failover only, very rarely
3494 Description: clients may get ASSERTION(granted_lock != NULL)
3495 Details : When request was taking a long time, and a client was resending
3496 a getattr by name lock request. The were multiple lock requests
3497 with the same client lock handle and
3498 mds_getattr_name->fixup_handle_for_resent_request found one of the
3499 lock handles but later failed with ASSERTION(granted_lock != NULL).
3504 Description: handle->h_buffer_credits > 0, assertion failure
3505 Details : h_buffer_credits is zero after truncate, causing assertion
3506 failure. This patch extends the transaction or creates a new
3510 Frequency : NFS re-export or patchless client
3511 Bugzilla : 11179, 10796
3512 Description: Crash on NFS re-export node (__d_move)
3513 Details : We do not want to hash the dentry if we don't have a lock.
3514 But if this dentry is later used in d_move, we'd hit uninitialised
3515 list head d_hash, so we just do this to init d_hash field but
3516 leave dentry unhashed.
3519 Frequency : NFS re-export or patchless client
3521 Description: NFS exports has problem with symbolic link
3522 Details : lustre client didn't properly install dentry when re-exported
3523 to NFS or running patchless client.
3526 Frequency : NFS re-export or patchless client
3528 Description: Various nfs/patchless fixes.
3529 Details : fixes reuse disconected alias for lookup process - this fixes
3530 warning "find_exported_dentry: npd != pd",
3531 fix permission error with open files at nfs.
3532 fix apply umask when do revalidate.
3535 Frequency : occasional
3537 Description: Crash on NFS re-export node
3538 Details : calling clear_page() on the wrong pointer triggered oops in
3539 generic_mapping_read().
3542 Frequency : rarely, using O_DIRECT IO
3544 Description: unaligned directio crashes client with LASSERT
3545 Details : check for unaligned buffers before trying any requests.
3548 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
3550 Description: stale data returned from RAID cache
3551 Details : If only a small amount of IO is done to the RAID device before
3552 reading it again it is possible to get stale data from the RAID
3553 cache instead of reading it from disk.
3556 Frequency : always for sles10 kernel
3558 Description: sles10 support
3559 Details : ll_follow_link: compile fixes and using of nd_set_link
3560 under newer kernels.
3563 Frequency : depends on arch, kernel and compiler version, always&n