3 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
4 for currently supported client and server kernel versions.
5 * Server known to build on patched kernels:
6 2.6.32-431.29.2.el6 (RHEL6.5)
7 2.6.32-504.8.1.el6 (RHEL6.6)
8 3.0.101-0.46 (SLES11 SP3)
9 * Client known to build on unpatched kernels:
10 2.6.32-431.29.2.el6 (RHEL6.5)
11 2.6.32-504.8.1.el6 (RHEL6.6)
12 3.10.0-123.20.1.el7 (RHEL7)
13 3.0.101-0.46 (SLES11 SP3)
14 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
15 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
16 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
17 stack overflow. For more information, please refer to bugzilla 17630.
18 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
19 the re-exporting nodes to be mounted with "32bitapi" mount option
21 Severity : enhancement
23 Description: control OST-index in IDIF via ROCOMPAT flag.
24 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
25 last_rcvd file. For new formatted OST device, it will be auto set;
26 for the case of upgrading from old OST device, you can enable it
27 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
28 enabled, for new created OST-object, its IDIF-in-LMA will contain
29 the OST-index; for the existing OST-object, the OSD will convert
30 old format IDIF as new format IDIF with OST-index stored in the
31 LMA EA when accessing such OST-object or via OI scrub. Once such
32 flag is enabled, it cannot be reverted back, so the system cannot
33 be downgraded to the orignal incompatible version.
35 --------------------------------------------------------------------------------
37 07-30-2014 Intel Corporation
39 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
40 for currently supported client and server kernel versions.
41 * Server known to build on patched kernels:
42 2.6.32-431.20.3.el6 (RHEL6.5)
43 3.0.101-0.31 (SLES11 SP3)
44 * Client known to build on unpatched kernels:
45 2.6.32-431.20.3.el6 (RHEL6.5)
46 3.0.101-0.31 (SLES11 SP3)
49 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
50 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
51 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
52 stack overflow. For more information, please refer to bugzilla 17630.
53 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
54 the re-exporting nodes to be mounted with "32bitapi" mount option
56 --------------------------------------------------------------------------------
58 10-31-2013 Intel Corporation
60 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
61 * Server builds for kernels:
62 2.6.32-358.18.1.el6 (RHEL6.4)
63 * Client builds for unpatched kernels:
64 2.6.32-358.18.1.el6 (RHEL6.4)
65 3.0.92-0.8 (SLES11 SP3)
67 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
68 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
69 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
70 stack overflow. For more information, please refer to bugzilla 17630.
71 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
72 the re-exporting nodes to be mounted with "32bitapi" mount option
74 --------------------------------------------------------------------------------
76 05-30-2013 Intel Corporation
78 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
79 * Server builds for kernels:
80 2.6.32-358.6.2.el6 (RHEL6.4)
81 * Client builds for unpatched kernels:
82 2.6.32-358.6.2.el6 (RHEL6.4)
83 3.0.74-0.6.6 (SLES11 SP2)
85 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
86 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
87 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
88 stack overflow. For more information, please refer to bugzilla 17630.
89 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
90 the re-exporting nodes to be mounted with "32bitapi" mount option
92 --------------------------------------------------------------------------------
94 9-30-2012 Whamcloud, Inc.
96 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
97 * Server support for kernels:
98 2.6.32-279.5.1.el6 (RHEL6)
99 * Client support for unpatched kernels:
100 2.6.32-279.5.1.el6 (RHEL6)
102 2.6.18-238.19.1.el5 (RHEL5)
103 2.6.16.60-0.69.1 (SLES10)
104 * Recommended e2fsprogs version: 1.41.90.wc4
105 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
106 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
107 stack overflow. For more information, please refer to bugzilla 17630.
108 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
109 the re-exporting nodes to be mounted with "32bitapi" mount option
111 Severity : enhancement
113 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
115 Severity : enhancement
117 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
119 Severity : enhancement
121 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
123 Severity : enhancement
125 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
127 Severity : enhancement
129 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
131 --------------------------------------------------------------------------------
133 04-30-2012 Whamcloud, Inc.
135 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
136 * Server support for kernels:
137 2.6.32-220.4.2.el6 (RHEL6)
138 * Client support for unpatched kernels:
139 2.6.32-220.4.2.el6 (RHEL6)
141 2.6.18-238.19.1.el5 (RHEL5)
142 2.6.16.60-0.69.1 (SLES10)
143 * Recommended e2fsprogs version: 1.41.90.wc4
144 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
145 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
146 stack overflow. For more information, please refer to bugzilla 17630.
147 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
148 the re-exporting nodes to be mounted with "32bitapi" mount option
150 Severity : enhancement
152 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
154 Severity : enhancement
156 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
158 Severity : enhancement
160 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
162 Severity : enhancement
164 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
166 --------------------------------------------------------------------------------
168 09-30-2011 Whamcloud, Inc.
170 * Server support for kernels:
171 2.6.18-238.19.1.el5 (RHEL5)
172 2.6.32-131.6.1.el6 (RHEL6)
173 * Client support for unpatched kernels:
174 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
175 2.6.18-238.19.1.el5 (RHEL5)
176 2.6.32-131.6.1.el6 (RHEL6)
177 2.6.29.4-167.fc11 (FC11)
178 2.6.16.60-0.69.1 (SLES10)
180 * Recommended e2fsprogs version: 1.41.90.wc3
181 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
182 Lustre filesystem with 4K stack may cause a stack overflow. For more
183 information, please refer to bugzilla 17630.
184 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
185 mounted with "32bitapi" mount option
187 Severity : enhancement
188 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
190 Severity : enhancement
191 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
193 Severity : enhancement
194 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
197 Frequency : only with SLES10
199 Description: Use OFED "KMP" provided by Novell
200 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
201 Lustre is now built against this package. That means you need to
202 install the ofed-kmp package from Novell for the patchless client.
203 Note that the ofed-kmp that Novell ships may not exactly match the
204 kernel version but should still be compatible.
206 Severity : enhancement
208 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
209 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
211 --------------------------------------------------------------------------------
213 2010-07-15 Oracle, Inc.
215 * Server support for kernels:
216 2.6.18-164.11.1.el5 (RHEL 5)
217 2.6.18-164.11.1.0.1.el5 (OEL 5)
218 * Client support for unpatched kernels:
219 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
220 2.6.18-164.11.1.el5 (RHEL 5),
221 2.6.18-164.11.1.0.1.el5 (OEL 5)
222 2.6.16.60-0.42.8 (SLES 10),
224 2.6.29.4-167.fc11 (FC11)
225 * Recommended e2fsprogs version: 1.41.10-sun2
227 Severity : enhancement
229 Description: Distribute lfs_migrate script with lustre
230 Details : The lfs_migrate mentioned in the manual is now included in the
231 lustre tree in lustre/scripts and will distributed in lustre RPMs.
233 Severity : enhancement
235 Description: Failover nid list added to import proc file.
237 Severity : enhancement
239 Description: "som_preview" mount option required to use SOM
240 Details : The clients will need to use som_preview mount option
244 Description: Lustre does not do 1MB IOs to HW RAID
245 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
247 Severity : enhancement
249 Description: lfs quota output is not very convenient for awk/sed-parsing
250 Details : Some positions in lfs quota output table could be empty or
251 non-empty which made it hard to parse it with scripts, now
252 a dash is put instead of space where there is not supposed
257 Description: Update to OFED 1.5.1
258 Details : OFED 1.5.1 will be used in environments that don't use
259 vendor supplied OFED.
263 Description: Remove lnet. prefix from lctl params display
264 Details : Also renamed lnet.memused to lnet_memused to
269 Description: Use conf_param -d to remove permanant settings.
273 Description: Add list_param -R
274 Details : lctl list_param now supports recursive mode.
277 Bugzilla : 21829, 22312
278 Description: Fix llobdstat.
279 Details : 1. Now updating the write_bytes counter
280 2. Port script fixes from 1.8.
284 Description: decrease the usage of memory on clients.
285 Details : 1. On clients, recycle dentries and inodes unused.
286 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
291 Description: llobdstat fix and enhancement
292 Details : add a counter to set a limit to how many samples will be returned
293 fix a wildcard in the path to limit to obdfilter stats only
297 Description: lfs check only allowed for root
298 Details : Code cleanups and added a regresion test of non-root use of
303 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
304 Details : Fix hr->hr_index overload.
308 Description: Fix FIEMAP functionality.
312 Description: FC11 patchless client support added
316 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
317 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
321 Description: New acc-sm script and various test-framework enhancments.
325 Description: Previously landed patch was reverted.
329 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
333 Description: Add ldiskfs maxdirsize mount option.
337 Description: Fix mkfs.lustre support for 16TB LUNs.
341 Description: Print mmp_check_interval
342 Details : print mmp_check_interval and make it possible to abort
343 mount operation in case it takes too long.
347 Description: Add cascading_rw to lustre mpi tests.
351 Description: Store SOM data in EA.
352 Details : Also several SOM related cleanups.
356 Description: Add refcount to md_open_data
360 Description: Use refcount on lov_request_set to prevent memory corruption.
364 Description: Statahead: use parent dir's i_mutex for synchronization.
368 Description: loadgen improvements.
372 Description: Enable peer health detection in ksocklnd and ko2iblnd.
376 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
380 Description: Fix race on obd_devcie:md_stats
384 Description: Fix SLES 11 client builds.
385 Details : Resolved uninitalized pointer gcc warnings.
389 Description: Allow non-root access for "lfs check".
390 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
394 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
396 Severity : enhancement
398 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
399 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
403 Description: Sanity test_27p fails.
404 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
405 Sanity tests 27 were cleaned up and improved.
409 Description: Unify req format on client/servers
410 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
411 buffers and swabbers approach..
416 Description: drop join file stuff.
418 Severity : enhancement
420 Description: Add 2.6.27 and SLES11 (patchless client) support
424 Description: Fix in ptlrpc_expire_one_request() to print the signed time
427 Severity : enhancement
429 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
432 Severity : enhancement
434 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
436 Severity : enhancement
438 Description: correctly handle big reply message.
439 Details : send LNet event if reply is bigger then buffer and adjust this buffer
444 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
446 Severity : enhancement
448 Description: Add support for OEL5.
452 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
454 Severity : enhancement
456 Description: "weak-modules" support
457 Details : Implement "weak-modules" support which enables kernel modules
458 to be used with any kernel that implements the same kABI. In
459 order to achieve this modules are now installed in
460 /lib/modules/$(uname -r)/updates/kernel on all distributions.
464 Description: client could not reconnect to OST because of an active request.
465 Details : The client now retries to reconnect to the same server, if a
466 connect request failed with EBUSY or -EAGAIN. Test case 35b
467 conf-sanity.sh has been created.
471 Description: Don't allow make backward step on assignin osc next id.
472 Details : race between allocation next id and ll_sync thread can be cause
473 of set wrong osc next id and can be kill valid ost objects.
477 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
481 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
485 Description: Error handling in osc_statfs_interpret() has been improved.
486 Details : Check in osc_statfs_interpret() for EBADR.
490 Description: Do not send statfs() requests to OSTs disabled by administrator.
491 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
493 Severity : enhancement
495 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
497 Severity : enhancement
499 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
501 Severity : enhancement
503 Description: Enhancement for lfs(1) command to use numeric uid/gid.
507 Description: Improved cleanup procedure for conf-sanity test_46a.
511 Description: Do not start bulk transfer, if client tried to reconnect.
512 Details : Do not start bulk transfer, if client tried to reconnect,
513 but failed due to active rpcs. Check for exp_abort_active_req
514 has been implemented.
518 Description: Prevent inconsistences between linux and lustre mount structures.
519 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
520 Make the sleep interruptible.
522 Severity : enhancement
524 Description: provide server to client comms path
525 Details : server to client communications path via new LDLM_SET_INFO rpc
529 Description: truncate starts GFP_FS allocation under transaction causing deadlock
530 Details : ldiskfs_truncate calls grab_cache_page which may start page
531 allocation under an open transaction. This may lead to
532 calling prune_icache with consequent lustre reentrance.
536 Description: send correctly lsm on open replay
537 Details : MDS is trust to LSM size on replay open, but client can set wrong size
542 Description: enable client interface failover
543 Details : When a child reconnects from another NID, properly update export
544 nid hash position and ldlm reverse import.
546 Severity : enhancement
548 Description: Communicate OST degraded/readonly state via statfs to MDS
549 Details : Flags in the statfs returned from OSTs indicate whether the
550 OST is in a degraded RAID state, or if the filesystem has
551 turned read-only after a filesystem error is detected.
556 Description: don't panic if EPROTO was hit when reading symlink
557 Details : correctly handling request reference in error cases.
559 Severity : enhancement
561 Description: Add LustreNetLink, a kernel-userspace communcation path.
563 Severity : enhancement
565 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
570 Description: access to llog context before init.
571 Details : move handling CATALOGS file at osc layer and forbid access to llog
575 Frequency : rare, only when client is writing to OST on local node
577 Description: Avoid deadlock for local client writes
578 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
579 memory freeing context. This allows OST threads to set the
580 PF_MEMALLOC flag on task structures in order to allocate memory
581 from reserved pools and complete IO.
582 Use GFP_HIGHUSER for OST allocations for non-local client writes,
583 so that the OST threads generate memory pressure and allow
584 inactive pages to be reclaimed.
586 Severity : enhancement
588 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
593 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
594 Details : move ldlm namespace creation in setup phase to avoid grab
595 _lprocfs_lock with cli_sem held.
599 Description: Temporarily disable grant shrink.
600 Details : Disable the feature for debugging.
603 Frequency : only when formatting test filesystems
605 Description: Unable to run several mkfs.lustre on loop devices at the same time
606 Details : mkfs.lustre returns error 256 on the concurrent loop devices
607 formatting. The solution is to proper handle the error.
609 Severity : enhancement
611 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
613 Severity : enhancement
615 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
620 Description: resolve race between obd_disconnect and class_disconnect_exports
621 Details : if obd_disconnect will be called to already disconnected export he
622 forget release one reference and osc module can't unloaded.
624 Severity : enhancement
626 Description: Allow tuning service thread via /proc
627 Details : For each service a new
628 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
629 created that can be used to set min/max thread counts, and get the
630 current number of running threads.
635 Descriptoin: don't return error if have partially created objects for file.
636 Details : lov_update_create_set uses set->set_success as index for created
637 objects, so if some requests will be failed, they will have hole
638 at end of array and qos_shrink_lsm for allocate correct lsm.
640 Severity : enhancement
642 Description: Update OFED support to 1.4.1
647 Description: Reduce small size read RPC
648 Details : Set read-ahead limit for every file and only do read-ahead when
649 available read-ahead pages are bigger than 1M to avoid small size
652 Severity : enhancement
654 Description: move AT tunable parameters for more consistent usage
655 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
657 Severity : enhancement
659 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
660 Details : allow skip disconnected ost for send statfs request and hide error
666 Description: fix racy locking of mballoc block bitmaps causing BUG
667 Details : The locking of the mballoc buddy bitmap and the in-memory
668 block bitmap was using two different spin locks in some
669 cases. This made it possible to incorrectly access the
670 mballoc bitmap while another process was modifying it,
671 causing a sanity assertion to fail. While no on-disk corruption
672 was reported, there was some risk of this happening.
675 Frequency : rare, on llog test 6
677 Descriptoin: don't allow connect to already connected import
678 Details : allowing connect to already connected import is hide connecting problem.
683 Descriptoin: allow kill process which wait statahead result
684 Details : for some reasons 'ls' can stick in waiting result from statahead,
685 in this case need way for kill this process.
687 Severity : enhancement
689 Description: Add state history info file, enhance import info file
690 Details : Track import connection state changes in a new osc/mdc proc file;
691 add overview-type data to the osc/mdc import proc file.
693 Severity : enhancement
695 Description: MDS create should not wait for statfs RPC while holding DLM lock.
697 Severity : enhancement
699 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
704 Descriptoin: OST grant too much space to client even there are not enough space.
705 Details : Client will shrink its grant cache to OST if there are no write
706 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
707 this grant cache if there are already not enough avaible space
708 (left_space < total_clients * 32M).
711 Frequency : start MDS on uncleanly shutdowned MDS device
713 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
714 Details : stay in waiting mds<>ost recovery finished produce random bugs
715 due race between two ll_sync thread for one lov target. send
716 ACTIVATE event only if connect realy finished and import have
720 Frequency : rare, connect and disconnect target at same time
722 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
723 Details : don't call obd_disconnect under lov_lock. this long time
724 operation and can block ptlrpcd which answer to connect request.
729 Descriptoin: don't lose wakeup for imp_recovery_waitq
730 Details : recover_import_no_retry or invalidate_import and import_close can
731 both sleep on imp_recovery_waitq, but we was send only one wakeup
735 Frequency : always with long access acl
737 Descriptoin: mds can't pack reply with long acl.
738 Details : mds don't control size of acl but they limited by reint/getattr
741 Severity : enhancement
743 Description: Update to SLES10 kernel-2.6.16.60-0.33.
745 Severity : enhancement
747 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
750 Frequency : start MDS on uncleanly shutdowned MDS device
752 Descriptoin: aborting recovery hang on MDS
753 Details : don't throttle destroy RPCs for the MDT.
756 Frequency : on remount
758 Description: external journal device not working after the remount
759 Details : clear dev_rdonly flag for external journal devices in
765 Description: shutdown vs evict race
766 Details : client_disconnect_export vs connect request race.
767 if client will evicted at this time - we start invalidate
768 thread without referece to import and import can be freed
772 Frequency : rare, need acl's on inode.
774 Description: client can't handle ost additional correctly
775 Details : if ost was added after client connected to mds client can have
776 hit lnet_try_match_md ... to big messages to wide striped files.
777 in this case need teach client to handle config events about add
778 lov target and update client max ea size at that event.
780 Severity : enhancement
782 Description: Changelogs
783 Details : Changelogs are a lightweight mechanism to track filesystem
784 metadata and namespace changes. The changelog is recorded
785 permanently on the MDTs, and is periodically "consumed" / purged
786 when records are no longer needed.
788 Severity : enhancement
790 Description: compact fld format with extents
791 Details : Store range of seq rather than every seq in FLD. Seq
792 controller update FLD rather than clients. In Case of CMD, mdt0
793 has FLD, all other metadata server act as non persistent proxy
794 for FLD queries and cache fld entries in fld cache.
799 Description: don't skip ost target if they assigned to file
800 Details : Drop slow OSCs if we can, but not for requested start idx.
801 This means "if OSC is slow and it is not the requested
802 start OST, then it can be skipped, otherwise skip it only
803 if it is inactive/recovering/out-of-space.
807 Description: more cleanup in mds_lov
808 Details : not send LOV EA under replay, we can't know about they size at this
809 time. Don't allow client connect to mds before any ost connected,
810 for avoid problems with LOV EA size and returning EIO to client.
812 Severity : enhancement
814 Description: Interoperability at server side (Disk interoperability)
816 Severity : enhancement
818 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
820 Severity : enhancement
822 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
824 Severity : enhancement
826 Description: New client IO stack (CLIO).
828 Severity : enhancement
830 Description: Commit on sharing. Eliminate inter-client dependencies between
831 uncommitted transactions by doing transaction commits.
832 Thereby clients may recovery independently.
835 Frequency : Create a symlink file with a very long name
837 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
838 Details : If there is no extra space in the request for early cancels,
839 ldlm_req_handles_avail() returns 0 instead of a negative value.
841 Severity : enhancement
843 Description: Add /proc entry for import status
844 Details : The mdc, osc, and mgc import directories now have
845 an import directory that contains useful import data for debugging
848 Severity : enhancement
850 Description: Re-disable certain /proc logging
851 Details : Enable and disable client's offset_stats, extents_stats and
852 extents_stats_per_process stats logging on the fly.
855 Frequency : Only on FC kernels 2.6.22+
857 Description: oops in statahead
858 Details : Do not drop reference count for the dentry from VFS when lookup,
859 VFS will do that by itself.
861 Severity : enhancement
863 Description: Generic /proc file permissions
864 Details : Set /Proc file permissions in a more generic way to enable non-
865 root users operate on some /proc files.
869 Description: Hitting mdc_commit_close() ASSERTION
870 Details : Properly handle request reference release in
871 ll_release_openhandle().
875 Description: quota recovery deadlock during mds failover
876 Details : This patch includes att18982, att18236, att18237 in bz14840.
878 1. fix osts hang when mds does failover with quotaon
879 2. prevent watchdog storm when osts threads wait for the
884 Frequency : only patchless client
885 Description: add workaround for race between add/remove dentry from hash
887 Severity : enhancement
889 Description: Allow OST glimpses to return PW locks
893 Description: LBUG when llog conf file is full
894 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
898 Description: Prevent import from entering FULL state when server in recovery
902 Description: service mount cannot take device name with ":"
903 Details : Only when device name contains ":/" will mount treat it as
909 Description: replace ptlrpcd with the statahead thread to interpret the async
910 statahead RPC callback
914 Frequency : on recovery
915 Description: I/O failures after umount during fail back
916 Details : if client reconnected to restarted server we need join to recovery
917 instead of find server handler is changed and process self
918 eviction with cancel all locks.
920 Severity : enhancement
922 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
924 Severity : enhancement
926 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
928 Severity : enhancement
930 Description: Upcall on Lustre log has been dumped
931 Details : Allow for a user mode script to be called once a Lustre log has
932 been dumped. It passes the filename of the dumped log to the
933 script, the location of the script can be specified via
934 /proc/sys/lnet/debug_log_upcall.
939 Description: avoid idr_remove called for id which is not allocated.
940 Details : Move assigment s_dev for clustered nfs to end of initialization,
941 to avoid problem with error handling.
946 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
947 Details : When connection is reused this not moved from CONN_UNUSED_HASH
948 into CONN_USED_HASH and this prodice warning when put connection
949 again in unused hash.
952 Severity : enhancement
954 Description: File striping can now be set to use an arbitrary pool of OSTs.
956 Severity : enhancement
958 Description: Export bytes_read/bytes_write count on OSC/OST.
962 Description: Early reply size mismatch, MGC loses connection
963 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
964 the connect flags are properly negotiated.
969 Description: quotas are not honored with O_DIRECT
970 Details : all writes with the flag O_DIRECT will use grants which leads to
971 this problem. Now using OBD_BRW_SYNC to guard this.
975 Description: add quota statistics
976 Details : 1. sort out quota proc entries and proc code.
977 2. add quota statistics
979 Severity : enhancement
981 Description: enable quota support for HEAD.
985 Description: Properly propagate oinfo flags from lov to osc for statfs
986 Details : restore missing copy oi_flags to lov requests.
988 Severity : enhancement
990 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
991 : l_getgroups(8), lst(8), routerstat(8)
992 Details : included man pages for llobdstat(8), llstat(8),
993 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
995 Severity : enhancement
997 Description: configure's --enable-quota should check the
998 : kernel .config for CONFIG_QUOTA
999 Details : configure is terminated if --enable-quota is passed but
1000 : no quota support is in kernel
1004 Description: Remove portals compatibility
1005 Details : Remove portals compatibility, not interoperable with releases
1010 Description: Resolve device initialization race
1011 Details : Prevent proc handler from accessing devices added to the
1012 obd_devs array but yet be intialized.
1014 Severity : enhancement
1016 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1018 Severity : enhancement
1020 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1025 Description: Using wrong pointer in osc_brw_prep_request
1026 Details : Access to array[-1] can produce panic if kernel compiled with
1027 CONFIG_PAGE_ALLOC enabled
1031 Description: Client runs out of low memory
1032 Details : Consider only lowmem when counting initial number of llap pages
1036 Description: *optional* service tags registration
1037 Details : if the "service tags" package is installed on a Lustre node
1038 When the filesystem is mounted, a local-node service tag will
1039 be created. See http://inventory.sun.com/ for more information
1040 about the Service Tags asset management system.
1044 Description: Kernel BUG tries to release flock
1045 Details : Lustre does not destroy flock lock before last reference goes
1046 away. So always drop flock locks when client is evicted and
1047 perform unlock regardless of successfulness of speaking to MDS.
1051 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1055 Description: sanity test 65a fails if stripecount of -1 is set
1056 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1061 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1062 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1065 Severity : enhancement
1067 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1071 Description: do not process already freed flock
1072 Details : flock can possibly be freed by another thread before it reaches
1073 to ldlm_flock_completion_ast.
1077 Description: LBUG during stress test
1078 Details : Need properly lock accesses the flock deadlock detection list.
1082 Description: oops in page fault handler
1083 Details : kernel page fault handler can return two special 'pages' in error
1084 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1088 Description: timeout with invalidate import.
1089 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1090 should be handled by ptlrpcd. This produce long age waiting and
1091 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1093 Severity : enhancement
1095 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1099 Description: enable MGS and MDT services start separately
1100 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1101 a co-located MGS without starting the MGS, which is a complement
1102 to 'nosvc' mount option.
1106 Frequency : after recovery
1107 Description: precreate to many object's after del orphan.
1108 Details : del orphan st in oscc last_id == next_id and this triger growing
1109 count of precreated objects. Set flag LOW to skip increase count
1110 of precreated objects.
1114 Frequency : rare, on clear nid stats
1115 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1116 Details : when clean nid stats sometimes try destroy live entry,
1117 and this produce panic in free.
1121 Description: Stack overflow during MDS log replay
1122 ease stack pressure by using a thread dealing llog_process.
1126 Description: wait until IO finished before start new when do lock cancel.
1127 Details : VM protocol want old IO finished before start new, in this case
1128 need wait until PG_writeback is cleared until check dirty flag and
1129 call writepages in lock cancel callback.
1131 Severity : enhancement
1133 Description: using special macro for print time and cleanup in includes.
1137 Description: mds_mfd_close() ASSERTION(rc == 0)
1138 Details : In mds_mfd_close(), we need protect inode's writecount change
1139 within its orphan write semaphore to prevent possible races.
1143 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1147 Frequency : rare, on shutdown ost
1148 Description: don't hit live lock with umount ost.
1149 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1150 use shrink_dcache_sb instead.
1154 Description: don't panic with use echo client
1155 Details : echo client pass NULL as client nid pointer and this produce null
1156 pointer dereference.
1160 Description: fix build on ppc32
1161 Details : compile code with -m64 flag produce wrong object file for ppc32.
1165 Description: add message levels for liblustreapi
1169 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1170 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1171 will result in an -EAGAIN and in the exit call path we call
1172 alloc_rr() which will with increasing aggressiveness attempt to
1173 aquire precreated objects on the minimum number of required OSCs.
1177 Description: Use old size assignment to avoid deadlock
1178 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1179 the scheduling while holding a spinlock. We do not need locking
1180 for size in ll_update_inode() because size is only updated from
1181 the MDS for directories or files without objects, so there is no
1182 other place to do the update, and concurrent access to such inodes
1183 are protected by the inode lock.
1187 Description: resolve "_IOWR redefined" build error on SLES10
1191 Description: dump the memory debugging after all modules are unloaded to
1192 suppress false negative in conf_sanity test 39
1194 Severity : enhancement
1196 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1201 Description: fix SLES kernel versioning
1202 Details : the kernel version for our SLES 10 kernel did not include a "-"
1203 before the "smp" at the end. while this was not a problem in
1204 general, it did mean that software trying to use the kernel
1205 version to try to detect a vendor specific kernel would fail.
1206 this was most evident by the OFED build scripts.
1210 Description: Don't update lov_desc members until making sure they are valid
1211 Details : When updating lov_desc members via proc fs, need fix their
1212 validities before doing the real update.
1216 Description: don't put request into delay list while invalidate in flight.
1217 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1218 import in flight. this produce timeout for invalidate and sometimes
1219 can cause stale data.
1223 Frequency : on ppc only
1224 Description: not convert ost objects for directory because it's not exist.
1225 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1229 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1231 Severity : enhancement
1233 Description: Update to support 2.6.22.14 vanilla kernel.
1237 Frequency : rare, on recovery
1238 Description: read procfs can produce deadlock in some situation
1239 Details : Holding lprocfs lock which send rpc can produce block for destroy
1240 obd objects and this also block reconnect with -EALREADY. This
1241 isn't fix all lprocfs bugs - but make it rare.
1243 Severity : enhancement
1245 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1248 Frequency : frequent on X2 node
1250 Description: mdc_set_open_replay_data LBUG
1251 Details : Set replay data for requests that are eligible for replay.
1255 Description: lustre_mgs: operation 101 on unconnected MGS
1256 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1257 MGC, and late on MGC cannot successfully connect to MGS and a lot
1258 of the error messages complaining that MGS is not connected.
1262 Frequency : on network error
1263 Description: panic with double free request if network error
1264 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1265 but it's true only for synchronus enqueue, for async enqueue
1266 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1269 Severity : enhancement
1271 Description: client-side metadata stat-ahead during readdir(directory readahead)
1272 Details : perform client-side metadata stat-ahead when the client detects
1273 readdir and sequential stat of dir entries therein
1276 Frequency : on start mds
1278 Description: Implement get_info(last_id) in obdfilter.
1281 Frequency : occasional
1283 Description: Correctly check stale fid, not start epoch if ost not support SOM
1284 Details : open with flag O_CREATE need set old fid in op_fid3 because
1285 op_fid2 was overwritten with new generated fid, but mds can answer
1286 with one of these two fids and both is not stale. Setattr
1287 incorrectly started an epoch and assume will be called
1288 done_writing, but without SOM done_writing ever being called.
1291 Frequency : rare, depends on device drivers and load
1293 Description: MDS or OSS nodes crash due to stack overflow
1294 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1295 In some cases, in conjunction with device drivers that use a lot
1296 of stack the MDS (or possibly OSS) service threads could overflow
1297 the stack. One change which was identified to consume additional
1298 stack has been reworked to avoid the extra stack usage.
1301 Frequency : occasional
1303 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1304 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1305 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1306 oscc_has_objects and see OSC has no objests and call
1307 oscc_internal_create to resend create request.
1309 Severity : enhancement
1311 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1313 Severity : enhancement
1315 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1318 Frequency : very rare
1320 Description: Fix replay if there is an un-replied request and open
1321 Details : In some cases, older replay request will revert the
1322 mcd->mcd_last_xid on MDS which is used to record the client's
1323 latest sent request.
1325 Severity : enhancement
1327 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1329 Severity : enhancement
1331 Description: Add rhel5 support to HEAD.
1333 Serverity : enhancement
1335 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1340 Description: Don't allow skipping OSTs if index has been specified.
1341 Details : Don't allow skipping OSTs if index has been specified, make
1342 locking in internal create lots better.
1346 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1347 Details : access to bitfield in structure is always rounded to long
1348 and this produce problem with not atomic change any bit.
1352 Description: Lustre make rpms failed.
1353 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1354 builds Lustre rpms from tarball.
1357 Frequency : rare on shutdown ost
1359 Description: If llog cancel was not send before clean_exports phase, this can
1360 produce deadlock in llog code.
1361 Details : If llog thread has last reference to obd and call class_import_put
1362 this produce deadlock because llog_cleanup_commit_master wait when
1363 last llog_commit_thread exited, but this never success because was
1364 called from llog_commit_thread.
1368 Description: allow userland application know is lost one of stripes.
1369 Details : fill lvb_blocks with error code on ost and return it to
1370 application if error flag found.
1374 Description: NULL lov_tgts causing MDS oops
1375 Details : more safe checks for NULL lov_tgts for avoid oops.
1377 Severity : enhancement
1379 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1383 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1384 Details : If an OST is down the MDS will hang indefinitely in
1385 obd_statfs_rqset() waiting for the statfs data. While for
1386 MDS QOS usage of statfs, it should not stuck in waiting.
1388 Severity : enhancement
1390 Description: remote_acl support
1391 Details : Support ACL-based permission check for remote user.
1392 Support setfacl/getfacl for remote user with the utils
1393 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1394 the system "{s,g}etfacl" utils.
1396 Severity : enhancement
1398 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1400 Severity : enhancement
1402 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1406 Description: make mgs_setparam() handle fsname containing dash
1407 Details : fsname containing a dash does not work with lctl conf_param
1409 Severity : enhancement
1411 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1413 Severity : enhancement
1415 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1419 Frequency : rare, at shutdown
1420 Description: access already free / zero obd_namespace.
1421 Details : if client_disconnect_export was called without force flag set,
1422 and exist connect request in flight, this can produce access to
1423 NULL pointer (or already free pointer) when connect_interpret
1424 store ocd flags in obd_namespace.
1428 Frequency : only at startup
1429 Description: not alloc memory with spinlock held.
1430 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1431 if any spinlock held.
1433 Severity : enhancement
1435 Description: make lustre randomly fail allocating memory
1436 Details : Make lustre randomly failed allocating memory for testing purpose.
1438 Severity : enhancement
1440 Description: lost problems with lov objid file
1441 Details : Fixes some scability and access to not inited memory problems
1442 in work with lov objdid file.
1447 Description: lfs find does not continue on file error
1448 Details : Continue other files processing when a file/dir is absent.
1452 Description: Inconsistent usage of lustre_pack_reply()
1453 Details : Standardize the usage of lustre_pack_reply() such that it
1454 always generate a CERROR on failure.
1457 Frequency : occasional
1459 Description: MDS hang or stay in waiting lock
1460 Details : If client receive lock with CBPENDING flag ldlm need send lock
1461 cancel as separate rpc, to avoid situation when cancel request
1462 can't processed due all i/o threads stay in wait lock.
1466 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1470 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1474 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1478 Description: Update to RHEL4 latest kernel.
1480 Severity : enhancement
1482 Description: Build SLES10 patchless client fails
1483 Details : The configure was broken by run ./configure with
1484 --with-linux-obj=.... argument for patchless client. When the
1485 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1486 can't search header adequately. Use absolute path such as
1487 -I($LINUX)/include instead.
1491 Description: interrupt oig_wait produce painc on resend.
1492 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1493 private set, and this produce situation when rq_ptlrpcd_data not
1494 copyed to new allocated request and triggered LBUG on assert
1495 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1496 ptlrpcd set if request is changed and can be safety changed to use
1501 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1502 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1503 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1504 these macros and replace them with their difinitions instead.
1508 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1509 Details : Update which_patch & target file for SLES10 latest kernel.
1512 Description: Remove client patches from SLES 10 kernel.
1513 Details : This causes SLES 10 clients to behave as patchless clients
1514 even on a Lustre-patched (server) kernel.
1516 Severity : enhancement
1518 Description: self-adjustable client's lru lists
1519 Details : use adaptive algorithm for managing client cached locks lru
1520 lists according to current server load, other client's work
1521 pattern, memory activities, etc. Both, server and client
1522 side namespaces provide number of proc tunables for controlling
1525 Severity : enhancement
1527 Description: light-weight GSS support
1528 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1529 and reduce performance overhead.
1531 Severity : enhancement
1533 Description: Linux keyring support
1534 Details : Support using service of Linux keyring for Lustre GSS internal
1535 context refresh/cache mechanism.
1539 Description: Fix errors in lfs documentation
1540 Details : Fixes man pages
1544 Description: don't use GFP_* in generic Lustre code.
1545 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1549 Description: obdclass is limited by single OBD_ALLOC(idarray)
1550 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1554 Description: warnings with build patchless client with vanila 2.6.19 and up
1555 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1556 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1560 Frequency : Only for SLES
1561 Description: sanity_quota fail test_1
1562 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1563 file, which makes TSTID[2] inunique.
1567 Frequency : Only for SLES9
1568 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1569 Details : Update target/ChangeLog/which_patch .
1573 Frequency : Only for test_10 in sanity-quota.sh
1574 Description: a bug in quota test code
1575 Details : checking a test flag in a wrong place
1579 Frequency : Only for test_13 in sanity-quota.sh
1580 Description: a bug in quota test script
1581 Details : shouldn't check overfull allocated quota
1585 Description: jbd statistics
1586 Details : Port older jbd statistics patch for sles10
1588 Severity : enhancement
1590 Description: Add printing inode info into message about error in writepage.
1595 Description: reply_lock_interpret crash due to race with it and lock cancel.
1596 Details : Do not replay locks that are being cancelled. Do not reference
1597 locks by their address during replay, just by their handle.
1601 Frequency : When flocks are used.
1602 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1603 Details : Flock locks might destroy just granted lock if it could be merged
1604 with another existing flock, this is done in completion handler,
1605 so teach ldlm_cli_enquque_fini that this is a valid case for
1611 Description: Oops in read and write path when failing to allocate lock.
1612 Details : Check if lock allocation failed and return error back.
1616 Description: lstripe command fails for valid OST index
1617 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1618 instead of lov->desc.ld_active_tgt_count.
1622 Description: sanity.sh failed test 103
1623 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1628 Description: df doesn't work properly if diskfs blocksize != 4K
1629 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1633 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1634 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1636 Severity : enhancement
1638 Description: Adaptive timeouts
1639 Details : RPC timeouts adapt to changing server load and network
1640 conditions to reduce resend attempts and improve recovery time.
1644 Description: llapi_file_create() does not allow some changes
1645 Details : add llapi_file_open() that allows specifying the mode and
1646 open flags, and also returns an open file handle.
1650 Description: merge and cleanup kernel patches.
1651 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1655 Description: Add journal checksum support.(Kernel part)
1656 Details : The journal checksum feature adds two new flags i.e
1657 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1658 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1659 indicates that the commit block contains the checksum for
1660 the blocks described by the descriptor blocks. Now commit
1661 record can be sent to disk without waiting for descriptor
1662 blocks to be written to disk. This behavior is controlled
1663 using JBD2_FEATURE_ASYNC_COMMIT flag.
1667 Description: OSS needs mutliple precreate threads
1668 Details : Add ability to start more than one create thread per OSS.
1672 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1673 Details : execute lfs setstripe on client
1677 Description: mds_obd_create error creating tmp object
1678 Details : When the user sets quota on root, llog will be affected and can't
1679 create files and write files.
1682 Frequency : Always on ia64 patchless client, and possibly others.
1684 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1685 Details : This allows the patchless client to be loaded on architectures
1686 without this export.
1690 Description: RedHat Update kernel for RHEL5
1691 Details : Add the kernel config file for RHEL5.
1695 Description: RedHat Update kernel for RHEL5
1696 Details : Modify the kernel config file more closer RHEL5.
1700 Description: Build failure against Centos5 (RHEL5)
1701 Details : Define PAGE_SIZE when it isn't present.
1705 Description: test_7 on sanity-quota.sh can't be used on separate machines
1706 Details : add facet to handle it
1710 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1711 Details : with NFS, the anon dentry's parent was set to itself in
1712 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1713 corresponding dentry other than use rec->ur_name.
1715 Severity : enhancement
1717 Description: lfs setstripe enhancement
1718 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1722 Description: enable data checksumming by default
1723 Details : enable checksum by default, allow --disable-checksum
1724 configure option and "-o nochecksum" mount option. Checksums
1725 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1729 Description: lustre support for RHEL5
1730 Details : Add support for RHEL5.
1734 Description: Client eviction due to failover config
1735 Details : after a connection loss, the lustre client should attempt to
1736 reconnect to the last active server first before trying the
1737 other potential connections.
1741 Description: when mds and osts use different quota unit(32bit and 64bit),
1742 quota will be released repeatly.
1743 Details : void sending multiple quota reqs to mds, which will keep the
1744 status between the reqs.
1748 Description: osts not allocated evenly to files
1749 Details : change the condition to increase offset_idx
1752 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1754 Description: Data corruption for OSTs that are formatted larger than 2TB
1756 Details : When generating the bio request for lustre file writes the
1757 sector number would overflow a temporary variable before being
1758 used for the IO. The data reads correctly from Lustre (which
1759 will overflow in a similar manner) but other file data or
1760 filesystem metadata may be corrupted in some cases.
1764 Description: Tune the kernel for good SCSI performance.
1765 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1766 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1771 Description: rewrite ext2-derived code in obdclass/uuid.c
1772 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1773 from scratch preserving functionality.
1777 Description: "lfs find -obd UUID" prints directories
1778 Details : "lfs find -obd UUID" will return all directory names instead
1779 of just file names. It is incorrect because the directories
1780 do not reside on the OSTs.
1784 Description: use i_size_read and i_size_write in 2.6 port
1785 Details : replace inode->i_size access with i_size_read/write()
1788 Frequency : when removing large files
1790 Description: scheduling issue during removal of large Lustre files
1791 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1792 It causes scheduling issues when removing large files (17TB in the
1796 Frequency : only with liblustre clients on XT3
1798 Description: evictions taking too long
1799 Details : allow llrd to evict clients directly on OSTs
1802 Frequency : only on ppc
1804 Description: /proc/fs/lustre/devices broken on ppc
1805 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1806 We should make sure the type of 'index' is loff_t and then cast
1807 explicitly as needed below. Do not assign an explicitly cast
1811 Frequency : only for rhel5
1813 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1814 Details : Modify the target file & which_kernel.
1816 Severity : enhancement
1818 Description: omit set fsid for export NFS
1819 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1820 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1824 Frequency : Always, for kernels after 2.6.16
1825 Description: Fix warning idr_remove called for id=.. which is not allocated.
1826 Details : Last kernels save old s_dev before kill super and not allow
1827 to restore from callback - restore it before call kill_anon_super.
1831 Description: buffer overruns could theoretically occur
1832 Details : llapi_semantic_traverse() modifies the "path" argument by
1833 appending values to the end of the origin string, and a
1834 overrun may occur. Adding buffer overrun check in liblustreapi.
1838 Description: Fix error on 'ls .' at the top of the Lustre mount.
1839 Details : Don't revalidate dentry if it is a root dentry.
1843 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1844 Details : Modify vm-tunables-rhel4.patch.
1848 Description: Kernel config for 2.6.18-vanilla.
1849 Details : Modify targets/2.6-vanilla.target.in.
1850 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1851 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1852 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1853 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1857 Description: improve handling recoverable errors
1858 Details : if request processig with error which can be recoverable on server
1859 request should be resend, otherwise page released from cache and
1864 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1865 Details : Modify target file & which_patch.
1866 A flaw was found in the IA32 system call emulation provided
1867 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1868 value could be stored in the %RAX register, which could trigger an
1869 out-of-bounds system call table access. An untrusted local user
1870 could exploit this flaw to run code in the kernel
1871 (ie a root privilege escalation). (CVE-2007-4573).
1875 Description: O_DIRECT bypasses client statistics.
1876 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1877 read_ahead_stats were updated. copied the stats section from
1878 osc_send_oap_rpc() into async_internal().
1882 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1886 Description: change order of libsysio includes
1887 Details : '#include sysio.h' should always come before '#include xtio.h'
1891 Description: handle "serious error: objid * already exists" more gracefully
1892 Details : If LAST_ID value on disk is smaller than the objects existing in
1893 the O/0/d* directories, it indicates disk corruption and causes an
1894 LBUG(). If the object is 0-length, then we should use the existing
1895 object. This will help to avoid a full fsck in most cases.
1897 Severity : enhancement
1899 Description: adapt the lustre_config script to support the upgrade case
1900 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1901 server targets to 1.6 in parallel.
1905 Description: To avoid grant space > avaible space when the disk is almost
1906 full. Without this patch you might see the error "grant XXXX >
1907 available" or some LBUG about grant, when the disk is almost
1909 Details : In filter_check_grant, for non_grant cache write, we should
1910 check the left space by if (*left > ungranted + bytes), instead
1911 of (*left > ungranted), because only we are sure the left space
1912 is enough for another "bytes", then the ungrant space should be
1913 increase. In client, we should update cl_avail_grant only there
1914 is OBD_MD_FLGRANT in the reply.
1918 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1919 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1920 described in CVE-2007-4573. This problem could allow untrusted
1921 local users to gain root access.
1924 Frequency : when using O_DIRECT and quotas
1926 Description: Incorrect file ownership on O_DIRECT output files
1927 Details : block usage reported by 'lfs quota' does not take into account
1928 files that have been written with O_DIRECT.
1933 Description: touch file failed when fs is not full
1934 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1935 otherwise we can get ENOSP while fs is not full.
1939 Description: parallel lock callbacks
1940 Details : Instead of sending blocking and completion callbacks as separated
1941 requests, adding them to a set and sending in parallel.
1944 Frequency : only for Cray XT3
1945 Bugzilla : 12829/13455
1946 Description: Changing primary group doesn't change the group lustre assigns to
1948 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
1949 overridden with the primary group provided by the group upcall,
1950 whereas the supplied fsgid can be trusted if it is in the list of
1951 supplementary groups returned by the group upcall.
1953 Severity : enhancement
1955 Description: Allow masking D_WARNING, D_ERROR messages from console
1956 Details : Console messages can now be disabled via lnet.printk.
1960 Description: User code with malformed file open parameter crashes client node
1961 Details : Before packing join_file req, all the related reference should be
1962 checked carefully in case some malformed flags cause fake
1963 join_file req on client.
1967 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
1968 Details : ldlm_completion_ast() assumes that a lock is granted when the req
1969 mode is equal to the granted mode. However, it should also check
1970 that LDLM_FL_CP_REQD is not set.
1974 Description: Heavy nfs access might result in deadlocks
1975 Details : After ELC code landed, it is now improper to enqueue any mds
1976 locks under och_sem, because enqueue might want to decide to
1977 cancel open locks for same inode we are holding och_sem for.
1981 Description: Client eviction while running blogbench
1982 Details : A lot of unlink operations with concurrent I/O can lead to a
1983 deadlock causing evictions. To address the problem, the number of
1984 oustanding OST_DESTROY requests is now throttled to
1985 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
1986 callbacks are processed in priority.
1990 Description: enable ACLs on MDS by default
1991 Details : ACLs must be enabled on MDS by default.
1994 Frequency : PPC/PPC64 only
1996 Description: conflicts between asm-ppc64/types.h and lustre_types.h
1997 Details : fix duplicated definitions between asm-ppc64/types.h and
1998 lustre_types.h on PPC.
2001 Frequency : PPC/PPC64 only
2003 Description: asm-ppc/segment.h does not exist
2004 Details : fix compile issue on PPC.
2008 Description: better handle error messages in extents code
2011 Frequency : RHEL4 only
2013 Description: mkfs is very slow on IA64/RHEL4
2014 Details : A performance regression has been discovered in the MPT Fusion
2015 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2016 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2017 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2019 Severity : enhancement
2021 Description: SNMP support enhancement
2022 Details : Adding total number of sampled request for an MDS node in snmp
2025 Severity : enhancement
2027 Description: Optimize ldlm waiting list processing for PR extent locks
2028 Details : When processing waiting list for read extent lock and meeting read
2029 lock that is same or wider to it that is not contended, skip
2030 processing rest of the list and immediatelly return current
2031 status of conflictness, since we are guaranteed there are no
2032 conflicting locks in the rest of the list.
2036 Description: Time out and refuse to reconnect
2037 Details : When the failover node is the primary node, it is possible
2038 to have two identical connections in imp_conn_list. We must
2039 compare not conn's pointers but NIDs, otherwise we can defeat
2040 connection throttling.
2044 Description: port llog fixes from b1_6 into HEAD
2045 Details : Port llog reference couting and some llog cleanups from b1_6
2046 (bug 10800) into HEAD, for protect from panic and access to already
2047 free llog structures.
2051 Description: Detect stride IO mode in read-ahead
2052 Details : When a client does stride read, read-ahead should detect that and
2053 read-ahead pages according to the detected stride pattern.
2057 Description: data checksumming impacts single node performance
2058 Details : add support for several checksum algorithm. Currently, only CRC32
2059 and Adler-32 are supported. The checksum type can be changed on
2060 the fly via /proc/fs/lustre/osc/*/checksum_type.
2064 Description: use adler32 for page checksums
2065 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2070 Description: build for x2 fails
2071 Details : fix compile issue on Cray systems.
2075 Description: Properly match for duplicate locks
2076 Details : Due to different lock order from skiplists code, we need to
2077 traverse entire list for now
2080 Frequency : only on PPC/SLES10
2082 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2083 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2084 be defined. Add a hack in mkfs_lustre.c to work around this compile
2089 Description: LASSERT on MDS when client holding flock lock dies
2090 Details : ldlm pool logic depends on number of granted locks equal to
2091 number of released locks which is not true for flock locks, so
2092 just exclude such locks from consideration.
2096 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2097 Details : Use fsfilt_sync() for both the whole filesystem sync and
2098 individual file sync to eliminate dangerous inode locking
2099 with I_LOCK that can lead to a deadlock.
2103 Description: performance in 1.6.3
2104 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2105 sure that 1MB requests are not fragmented by the block layer.
2107 Severity : enhancement
2109 Description: organize the server-side client stats on per-nid basis
2110 Details : Change the structure of stats under obdfilter and mds to
2118 The "uuid"s file would list the uuids of _active_ exports.
2119 And the clear entry is to clear all stats and stale nids.
2121 Severity : enhancement
2123 Description: eliminate client locks in face of contention
2124 Details : file contention detection and lockless i/o implementation
2125 for contended files.
2129 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2132 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2134 Description: MDS may lose file striping (and hence file data) in some cases
2135 Details : If there are additional extended attributes stored on the MDS,
2136 in particular ACLs, SELinux, or user attributes (if user_xattr
2137 is specified for the client mount options) then there is a risk
2138 of attribute loss. Additionally, the Lustre file striping
2139 needs to be larger than default (e.g. striped over all OSTs),
2140 and an additional attribute must be stored initially in the
2141 inode and then increase in size enough to be moved to the
2142 external attribute block (e.g. ACL growing in size) for file
2147 Description: skiplist implementation simplification
2148 Details : skiplists are used to group compatible locks on granted list
2149 that was implemented as tracking first and last lock of each
2150 lock group the patch changes that to using doubly linked lists
2154 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2155 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2156 because LASSERT on both the data supplied by a client, and the
2157 data on disk is dangerous and incorrect.
2159 Severity : enhancement
2161 Description: Slow truncate/writes to huge files at high offsets.
2162 Details : Directly associate cached pages to lock that protect those pages,
2163 this allows us to quickly find what pages to write and remove
2164 once lock callback is received.
2168 Description: more ldlm soft lockups
2169 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2170 starve other threads from the resource lock for a long time in
2171 case of long waiting queue, so change the debug level from
2172 D_OTHER to the less frequently used D_INFO.
2174 Severity : enhancement
2176 Description: add -gid, -group, -uid, -user options to lfs find
2180 Description: Hung threads in invalidate_inode_pages2_range
2181 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2182 once one is completed. As a result, some RPCs are stuck in the
2183 queue and are never sent.
2187 Description: filter threads hungs on waiting journal commit
2188 Details : Cleanup filter group llog code, then only filter group llog will
2189 be only created in the MDS/OST syncing process.
2193 Description: Procfs and llog threads access destoryed import sometimes.
2194 Details : Sync the import destoryed process with procfs and llog threads by
2195 the import refcount and semaphore.
2197 Severity : enhancement
2199 Description: openlock cache of b1_6 port to HEAD
2204 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2205 Details : If insertion of an extent fails, then discard the inode
2206 preallocation and free data blocks else it can lead to duplicate
2211 Description: don't always update ctime in ext3_xattr_set_handle()
2212 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2213 In some cases the ctime should not be updated, for example for
2214 2.0->1.8 compatibility it is necessary to delete an xattr and it
2215 should not update the ctime.
2219 Bugzilla : 15713/16362
2220 Description: Assertion in iopen_connect_dentry in 1.6.3
2221 Details : looking up an inode via iopen with the wrong generation number can
2222 populate the dcache with a disconneced dentry while the inode
2223 number is in the process of being reallocated. This causes an
2224 assertion failure in iopen since the inode's dentry list contains
2225 both a connected and disconnected dentry.
2229 Description: assertion failure in ldlm_handle2lock()
2230 Details : fix a race between class_handle_unhash() and class_handle2object()
2231 introduced in lustre 1.6.5 by bug 13622.
2236 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2237 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2242 Description: oops in sd_iostats_seq_show()
2243 Details : unloading/reloading the scsi low level driver triggers a kernel
2244 bug when trying to access the sd iostat file.
2249 Description: Kernel panics during QLogic driver reload
2250 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2251 patch, causing memory corruption.
2256 Description: journal_dev option does not work in b1_6
2257 Details : pass mount option during pre-mount.
2259 Severity : enhancement
2261 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2262 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2263 extent information of a file. It can be used to map logical blocks
2264 in a file to physical blocks in the block device.
2268 Description: LDLM soft lockups - improvement
2269 Details : It is be possible to send the lock handle along with each read
2270 or write request because the client is already doing a lock match
2271 itself so there isn't any reason the OST should have to re-do that
2275 Frequency : only on Cray X2
2277 Description: X2 build failures
2278 Details : fix build failures on Cray X2.
2282 Description: xid & resent requests
2283 Details : Initialize RPC XID from clock at startup (randomly if clock is
2286 Severity : enhancement
2288 Description: Add lustre_start utility to start or stop multiple Lustre servers
2293 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2294 Details : In case of memory pressure, list_del() can be called twice on
2295 req->rq_history_list, causing a kernel oops.
2299 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2300 Details : fix stack overflow in the distributed lock manager by defering
2301 export eviction after a failed AST to the elt thread instead of
2302 handling it in the dlm interpret routine.
2306 Description: Convert some comments to new format.
2307 Details : Update documenting comments to match doxygen conventions.
2311 Description: Grammar fixes.
2312 Details : A couple of trivial spelling fixes.
2316 Description: OSD_COUNTERS-mandatory
2317 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2318 to simplify the code.
2322 Description: simplify cmm_device freeing logic.
2323 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2327 Description: Add lockdep support to dt_object_operations locking interface.
2328 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2329 parameter indicating lock ordering. Update mdd code to use new
2334 Description: Introduce failloc constants for lockless IO tests.
2335 Details : Add two new failloc constants to test lockless IO. Only one of
2336 them in implemented---another is checked in yet to be landed
2341 Description: Add lockdep support for inode mutex.
2342 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2343 in the situations where Lustre has to lock more than one inode
2348 Description: Add optional invariants checking support.
2349 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2350 configure switch. This macro is to be used for consistency and
2351 sanity checks that are too expensive to be left in `production'
2356 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2357 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2362 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2363 Details : Use spin_lock_nested() in (the only) situation where more than
2364 one ldlm_lock is locked simultaneously. Also, fix possible
2365 dead-lock in ldlm_lock_change_resource() by enforcing particular
2370 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2371 Details : Instead of specifying each ldlm_lock call-back through separate
2372 parameter, wrap them into struct ldlm_callback_suite.
2376 Description: Kill join_lru obd method and its callers.
2377 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2378 in memory---a requirement implemented through ->o_join_lru() obd
2379 method in HEAD. Remove this method and its users.
2383 Description: Add asynchronous ldlm ENQUEUE completion handler.
2384 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2385 case that stock ldlm_completion_ast() cannot handle as it waits
2386 until lock is granted. Introduce new ldlm_completion_ast_async()
2387 for this. Also comment ldlm_completion_ast().
2391 Description: ldlm_error <-> errno conversion.
2392 Details : Add functions to map (rather arbitrary) between LDLM error codes
2393 and standard errno values. CLIO needs this to prevent LDLM specific
2394 constants from escaping ldlm and osc.
2398 Description: Kill unused ldlm_handle2lock_ns() function.
2399 Details : Kill unused ldlm_handle2lock_ns() function.
2403 Description: Add lu_ref support to ldlm_lock
2404 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2405 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2406 and ldlm_resource. LDLM interface has to be changed, because code that
2407 releases a reference on a lock, has to "know" what reference this is.
2408 In the most frequent case
2410 lock = ldlm_handle2lock(handle);
2412 LDLM_LOCK_PUT(lock);
2414 no changes are required. When any other reference (received _not_ from
2415 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2416 instead of LDLM_LOCK_PUT().
2418 Arguably, changes are pervasive, and interface requires some discipline
2419 for proper use. On the other hand, it was very instrumental in finding
2420 a few leaked lock references.
2424 Description: Add ldlm_lock_addref_try().
2425 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2426 attempts to addref a lock that might be being canceled
2431 Description: Add ldlm_weigh_callback().
2432 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2433 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2434 hard-coded `number of pages' logic.
2438 Description: Add lockdep annotations to llog code.
2439 Details : Use appropriately tagged _nested() locking calls in the places
2440 where llog takes more than one ->lgh_lock lock.
2444 Description: Add loi_kms_set().
2445 Details : Wrap kms updates into a helper function.
2449 Description: Constify instances of struct lsm_operations.
2450 Details : Constify instances of struct lsm_operations.
2454 Description: lu_conf support.
2455 Details : On a server, a file system object is uniquely identified
2456 by a fid, which is sufficient to locate and load all object
2457 state (inode). On a client, on the other hand, more data are
2458 necessary instantiate an object. Change lu_object_find() and
2459 friends to take additional `lu_conf' argument describing object.
2460 Typically this includes layout information.
2464 Description: lu_context fixes.
2465 Details : Introduce new lu_context functions that are needed on the client
2466 side, where some system threads (ptlrpcd) are shared by multiple
2467 modules, and so cannot be stopped during module shutdown.
2471 Description: Add start and stop methods to lu_device_type_operations.
2472 Details : Introduce two new methods in lu_device_type_operations, that are
2473 invoked when first instance of a given type is created and last one
2474 is destroyed respectively. This is need by CLIO.
2478 Description: Add lu_ref support to struct lu_device.
2479 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2480 track leaked references.
2484 Description: Introduce lu_kmem_descr.
2485 Details : lu_kmem_descr and its companion interface allow to create
2486 and destroy a number of kmem caches at once.
2490 Description: Fix lu_object finalization race.
2491 Details : Fix a race between lu_object_find() finding an object and its
2492 concurrent finalization. This race is (most likely) not possible
2493 on the server, but might happen on the client.
2497 Description: Introduce lu_ref interface.
2498 Details : lu_ref is a debugging module allowing to track references to
2499 a given object. It is quite cpu expensive, and has to be
2500 explicitly enabled with --enable-lu_ref. See usage description
2505 Description: Factor lu_site procfs stats into a separate function.
2506 Details : Separate lu_site stats printing code into a separate function
2507 that can be reused on a client.
2511 Description: Constify instances of struct {lu,dt,md}_device_operations.
2512 Details : Constify instances of struct {lu,dt,md}_device_operations.
2516 Description: Introduce struct md_site and move meta-data specific parts of
2517 struct lu_site here.
2518 Details : Move md-specific fields out of struct lu_site into special struct
2519 md_site, so that lu_site can be used on a client.
2523 Description: Kill mdd_lov_destroy().
2524 Details : Remove unused mdd code.
2528 Description: Add st_block checking to multistat.c.
2529 Details : Add st_block checking to multistat.c.
2533 Description: Add lu_ref support to struct obd_device.
2534 Details : Add lu_ref tracking to obd_device.
2538 Description: Kill obd_set_fail_loc().
2539 Details : Remove unused code.
2543 Description: Add special type for ptlrpc_request interpret functions.
2544 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2545 there. Actual usage will be in CLIO.
2549 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2550 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2551 doesn't work with lockdep.
2555 Description: Add rwv.c test program.
2556 Details : New testing program exercising readv(2) and writev(2) (Qian).
2560 Description: Add sendfile.c test program.
2561 Details : New testing program exercising sendfile(2) (Jay).
2565 Description: Ratelimit a message that can be very frequent.
2566 Details : Ratelimit a memory allocation failure message that can
2571 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2572 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2576 Description: Liblustre build fixes.
2577 Details : Liblustre build fixes.
2581 Description: libcfs: add cfs_{need,cond}_resched() interface.
2582 Details : libcfs: add cfs_{need,cond}_resched() definition and
2583 implementations for Linux, NT, and liblustre.
2585 Severity : enhancement
2587 Description: More exported tunables for mballoc
2588 Details : Add support for tunable preallocation window and new tunables for
2589 large/small requests
2593 Description: Detect corruption of block bitmap and checking for preallocations
2594 Details : Checks validity of on-disk block bitmap. Also it does better
2595 checking of number of applied preallocations. When corruption is
2596 found, it turns filesystem readonly to prevent further corruptions.
2600 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2601 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2602 window to 0. If it does hit cache miss, and read-pattern is still
2603 stride-io mode, does not reset the stride window, but also does not
2604 increase the stride window length in this case.
2608 Frequency : only for big-endian servers
2609 Description: Check if system is big-endian while mounting fs with extents feature
2610 Details : Mounting a filesystem with extents feature will fail on big-endian
2611 systems since ext3-based ldiskfs is not supported on big-endian
2612 systems. This can be over-riden with "bigendian_extents" mount option.
2614 Severity : enhancement
2616 Description: The root squash functionality
2617 Details : A security feature, which is to prevent users from being able
2618 to mount lustre on their desktop, run as root, and delete
2619 all of the files in the filesystem. The goal is accomplished by
2620 remapping user id (UID) and group id (GID) of the root user to
2621 a UID and GID specified by the system administartor via Lustre
2622 configuration management server (MGS). The functionality also
2623 allows to specify sets of clients for which the remapping does
2628 Description: Excessive recovery window
2629 Details : With AT enabled, the recovery window can be excessively long (6000+
2630 seconds). To address this problem, we no longer use
2631 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2632 timeout no longer depends on the service time, it is set to
2633 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2634 time via pb_service_time.
2638 Description: Watchdog triggered on MDS failover
2639 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2640 the OSTs know that the MDS "UUID" can be reused for the same export
2641 from a different NID, so we do not need to wait for the export to be
2645 Frequency : rare, only if using MMP with Linux RAID
2647 Description: MMP doesn't work with Linux RAID
2648 Details : While using HA for Lustre servers with Linux RAID, it is possible
2649 that MMP will not detect multiple mounts. To make this work we
2650 need to unplug the device queue in RAID when the MMP block is being
2651 written. Also while reading the MMP block, we should read it from
2652 disk and not the cached one.
2654 Severity : enhancement
2656 Description: open file using fid
2657 Details : A file can be opened using just its fid, like
2658 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2661 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2664 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2665 Details : add proper locking for creation of jbd_4k slab cache
2669 Description: MMP check in ext3_remount() fails without displaying any error
2670 Details : When multiple mount protection fails during remount, proper error
2673 Severity : enhancement
2675 Description: Allow stripe size to be up to 4G-64k
2676 Details : Fix math logic to allow large stripe sizes.
2680 Description: add check for >8TB ldiskfs filesystems
2681 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2682 Don't allow >8TB ldiskfs filesystems to be mounted without
2683 force_over_8tb mount option
2688 Descriptoin: OSS complains "too many blocks" and crashes
2689 Details : In filter_commitrw_write():
2690 1. lquota_chkquota();
2691 2. obdo_from_inode();
2692 3. lquota_pending_commit();
2693 "2." has changed uid and gid in this case, then caused
2694 lquota_chkquota() and lquota_pending_commit() to use
2695 different uid and gid. That is the root of the bug.
2699 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2700 Details : Detect and print out the 'stripe count = -1' case properly.
2704 Description: Out or order replies might be lost on replay
2705 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2706 request with tid smaller then one currently being added, add it
2707 to the start, not end of the list.
2709 --------------------------------------------------------------------------------
2711 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2713 * Support for kernels:
2714 2.6.5-7.283 (SLES 9),
2715 2.6.9-55.EL (RHEL 4),
2716 2.6.16.46-0.14 (SLES 10),
2717 2.6.18.8 vanilla (kernel.org)
2718 * Client support for unpatched kernels:
2719 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2720 2.6.16 - 2.6.22 vanilla (kernel.org)
2721 * Due to recently discovered recovery problems, we do not recommend
2722 using patchless RHEL 4 clients with this or any earlier release.
2723 * Recommended e2fsprogs version: 1.39.cfs8
2724 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2725 * Starting with this release, the ldiskfs backing filesystem required
2726 by Lustre is now in its own package, lustre-ldiskfs. This package
2727 should be installed. It is versioned separately from Lustre and
2728 may be released separately in future.
2732 Description: block reactivating mgc import until all deactivates complete
2733 Details : Fix race when failing back MDT/MGS to itself (testing)
2736 Frequency : at statup only
2738 Description: mds_lov_synchronize race leads to various problems
2739 Details : simultaneous MDT->OST connections at startup can cause the
2740 sync to abort, leaving the OSC in a bad state.
2742 Severity : enhancement
2744 Description: add optional extra BUILD_VERSION info
2745 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2746 to override the lustre version.
2749 Frequency : 2.6.18 servers only
2751 Description: ll_kern_mount() doesn't release the module reference
2752 Details : The ldiskfs module reference count never drops down to 0
2753 because ll_kern_mount() doesn't release the module reference.
2758 Description: server LBUG when using old ost_num_threads parameter
2759 Details : Accept the old ost_num_threads parameter but warn that it
2760 is deprecated, and fix an off-by-one error that caused an LBUG.
2765 Description: Transient SCSI error results in persistent IO issue
2766 Details : iobuf->dr_error is not reinitialized to 0 between two
2770 Frequency : sometimes when underlying device returns I/O errors
2772 Description: OSTs not going read-only during write failures
2773 Details : OSTs are not remounted read-only when the journal commit threads
2774 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2775 instead of the ext3 wrappers.
2779 Description: poor connect scaling with increasing client count
2780 Details : Don't run filter_grant_sanity_check for more than 100 exports
2781 to improve scaling for large numbers of clients.
2784 Frequency : SLES10 only
2786 Description: sanity-quota.sh quotacheck failed: rc = -22
2787 Details : Quotas cannot be enabled on SLES10.
2790 Frequency : liblustre clients only
2792 Description: getdirentries does not give error when run on compute nodes
2793 Details : getdirentries does not fail when the size specified as an argument
2794 is too small to contain at least one entry
2796 Severity : enhancement
2798 Description: Add LNET router traceability for debug purposes
2799 Details : If a checksum failure occurs with a router as part of the
2800 IO path, the NID of the last router that forwarded the bulk data
2801 is printed so it can be identified.
2806 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2807 Details : Due to a race condition, liblustre clients were occasionally
2808 evicted incorrectly.
2810 Severity : enhancement
2812 Description: lfs setstripe use optional parameters instead of postional
2815 Severity : enhancement
2817 Description: Nanosecond timestamp support for ldiskfs
2818 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2819 resolution timestamps. There is not yet support for this at
2820 the Lustre filesystem level.
2823 Frequency : during server recovery
2825 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2826 Details : request with rq_no_resend flag not awake l_wait_event if they get
2830 Frequency : nfs export on patchless client
2832 Description: connectathon hang when test nfs export over patchless client
2833 Details : Disconnected dentry cannot be found with lookup, so we do not need
2834 to unhash it or make it invalid
2837 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2838 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2839 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2844 Description: open req refcounting wrong on reconnect
2845 Details : If reconnect happened between getting open reply from server and
2846 call to mdc_set_replay_data in ll_file_open, we will schedule
2847 replay for unreferenced request that we are about to free.
2848 Subsequent close will crash in variety of ways.
2849 Check that request is still eligible for replay in
2850 mdc_set_replay_data().
2855 Description: disable writes to filesystem when reading health_check file
2856 Details : the default for reading the health_check proc file has changed
2857 to NOT do a journal transaction and write to disk, because this
2858 can cause reads of the /proc file to hang and block HA state
2859 checking on a healthy but otherwise heavily loaded system. It
2860 is possible to return to the previous behaviour during configure
2861 with --enable-health-write.
2863 Severity : enhancement
2865 Description: 64-bit inode version
2866 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2867 to the inode. This will be required for version-based recovery.
2872 Description: MDS fails to start if a duplicate client export is detected
2873 Details : in some rare cases it was possible for a client to connect to
2874 an MDS multiple times. Upon recovery the MDS would detect this
2875 and fail during startup. Handle this more gracefully.
2877 Severity : enhancement
2879 Description: Add -o localflock option to simulate old noflock
2881 Details : This will achieve local-only flock/fcntl locks
2887 Description: log_commit_thread vs filter_destroy race leads to crash
2888 Details : Take import reference before releasing llog record semaphore
2893 Description: Wrong request locking in request set processing
2894 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2895 imp_delayed_list, in this place should be used imp_lock.
2898 Frequency : when reconnection
2900 Description: Grant Leak when osc reconnect to OST
2901 Details : When osc reconnect ost, OST(filter) should check whether it
2902 should grant more space to client by comparing fed_grant and
2903 cl_avail_grant, and return the granted space to client instead
2904 of "new granted" space, because client will call osc_init_grant
2905 to update the client grant space info.
2908 Frequency : when client reconnect to OST
2910 Description: Grant Leak when osc do resend and replay bulk write
2911 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2912 bulk write request, because the grant info while be sync between
2913 OSC and OST when reconnect, and we should ignore the grant info
2914 these of resend/replay write req.
2919 Description: Grant space more than avaiable left space sometimes.
2920 Details : When then OST is about to be full, if two bulk writing from
2921 different clients came to OST. Accord the avaliable space of the
2922 OST, the first req should be permitted, and the second one
2923 should be denied by ENOSPC. But if the seconde arrived before
2924 the first one is commited. The OST might wrongly permit second
2925 writing, which will cause grant space > avaiable space.
2928 Frequency : when client is evicted
2930 Description: Grant might be wrongly erased when osc is evicted by OST
2931 Details : when the import is evicted by server, it will fork another
2932 thread ptlrpc_invalidate_import_thread to invalidate the
2933 import, where the grant will be set to 0. While the original
2934 thread will update the grant it got when connecting. So if
2935 the former happened latter, the grant will be wrongly errased
2936 because of this race.
2941 Description: Checking Stale with correct fid
2942 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
2943 to check whether it is stale, because sometimes, we want the
2944 enqueue happened anyway, and op_data.fid2 will not be initialized.
2946 Severity : enhancement
2948 Description: update patchless client
2949 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
2952 Frequency : only with 2.4 kernel
2954 Description: random memory corruption
2955 Details : size of struct ll_inode_info is to big for union inode.u and this
2956 can be cause of random memory corruption.
2961 Description: Memory leak in recovery
2962 Details : Lov_mds_md was not free in an error handler in mds_create_object.
2963 It should also check obd_fail before fsfilt_start, otherwise if
2964 fsfilt_start return -EROFS,(failover mds during mds recovery).
2965 then the req will return with repmsg->transno = 0 and rc = EROFS.
2966 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
2967 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
2968 be freed no matter whether fsfilt_commit success or not.
2971 Frequency : only with huge count clients
2973 Description: Prevents from taking the superblock lock in llap_from_page for
2975 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
2976 for llap_from_page call in ll_removepage prevents from taking the
2977 superblock lock for a soon died page.
2982 Description: Not check open intent error before release open handle
2983 Details : in some rare cases, the open intent error is not checked before
2984 release open handle, which may cause
2985 ASSERTION(open_req->rq_transno != 0), because it tries to release
2986 the failed open handle.
2991 Description: Set cat log bitmap only after create log success.
2992 Details : in some rare cases, the cat log bitmap is set too early. and it
2993 should be set only after create log success.
2997 Description: Accessing a block bevice can re-enable I/O when Lustre is
2998 tearing down a device.
2999 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3004 Description: service threads may hog cpus when there are a lot of requests
3005 Details : Insert cond_resched to give other threads a chance to use some CPU
3010 Description: the cat log was not initialized in recovery
3011 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3012 unlink log on mds will not be initialized until mds post
3013 recovery. And also in mds post recovery, the unlink log will
3014 initialization will be done asynchronausly, so there will be race
3015 between add unlink log and unlink log initialization.
3019 Description: brw_stats were being printed incorrectly
3020 Details : brw_stats were being printed as log2 but all of them were not
3021 recorded as log2. Also remove some code duplication arising from
3022 filter_tally_{read,write}.
3026 Frequency : rare, only in recovery.
3027 Description: ASSERTION(req->rq_type != LI_POISON) failed
3028 Details : imp_lock should be held while iterating over imp_sending_list for
3029 prevent destroy request after get timeout in ptlrpc_queue_wait.
3033 Description: replay-single.sh test 52 fails
3034 Details : A lock's skiplist need to be cleanup when it being unlinked
3035 from its resource list.
3039 Description: Short directio read returns full requested size rather than
3041 Details : Direct I/O operations should return actual amount of bytes
3042 transferred rather than requested size.
3044 Severity : enhancement
3046 Description: metadata RPC reduction (e.g. for rm performance)
3047 Details : decrease the amount of synchronous RPC between clients and servers
3048 by canceling conflicing lock before the operation on the client
3049 and packing thier handles into the main operation RPC to server.
3051 Severity : enhancement
3053 Description: Async OSC create to avoid the blocking unnecessarily.
3054 Details : If a OST has no remain object, system will block on the creating
3055 when need to create a new object on this OST. Now, ways use
3056 pre-created objects when available, instead of blocking on an
3057 empty osc while others are not empty. If we must block, we block
3058 for the shortest possible period of time.
3062 Description: improve handling recoverable errors
3063 Details : if request processig with error which can be recoverable on server
3064 request should be resend, otherwise page released from cache and
3067 Severity : enhancement
3069 Description: refine locking for avoid write wrong info into lov_objid file
3070 Details : fix possible races with add new target and write/update data in
3073 --------------------------------------------------------------------------------
3075 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3080 Frequency : on some architectures
3082 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3083 Details : Uninitialized flags sometimes cause configuration commands to
3087 Frequency : patchless clients only
3089 Description: missing __iget() symbol export
3090 Details : The __iget() symbol export is missing. To avoid the need for
3091 this on patchless clients the deathrow inode reaper is turned
3092 off, and we depend on the VM to clean up old inodes. This
3093 dependency was during via the fix for bug 12181.
3095 --------------------------------------------------------------------------------
3097 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3099 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3100 INTEROPERATE with older versions automatically. In many cases a
3101 special upgrade step is needed. Please read the
3102 user documentation before upgrading any part of a live system.
3103 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3104 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3105 * WARNING: Lustre configuration and startup changes are required with
3106 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3110 Severity : enhancement
3112 Description: MountConf
3113 Details : Lustre configuration is now managed via mkfs and mount
3114 commands instead of lmc and lconf. New obd types (MGS, MGC)
3115 are added for dynamic configuration management. See
3116 https://mail.clusterfs.com/wikis/lustre/MountConf for
3119 Severity : enhancement
3121 Description: dynamic OST addition
3122 Details : OSTs can now be added to a live filesystem
3124 Severity : enhancement
3126 Description: startup order invariance
3127 Details : MDTs and OSTs can be started in any order. Clients only
3128 require the MDT to complete startup.
3130 Severity : enhancement
3132 Description: parallel, asynchronous orphan cleanup
3133 Details : orphan cleanup is now performed in separate threads for each
3134 OST, allowing parallel non-blocking operation.
3136 Severity : enhancement
3138 Description: optimized stripe assignment
3139 Details : stripe assignments are now made based on ost space available,
3140 ost previous usage, and OSS previous usage, in order to try
3141 to optimize storage space and networking resources.
3143 Severity : enhancement
3145 Description: Permanently set tunables
3146 Details : All writable /proc/fs/lustre tunables can now be permanently
3147 set on a per-server basis, at mkfs time or on a live system.
3149 Severity : enhancement
3151 Description: Lustre message v2
3152 Details : Add lustre message format v2.
3154 Severity : enhancement
3156 Description: client OST exclusion list
3157 Details : Clients can be started with a list of OSTs that should be
3158 declared "inactive" for known non-responsive OSTs.
3162 Description: SPEC SFS validation failure on NFS v2 over lustre.
3163 Details : Changes the blocksize for regular files to be 2x RPC size,
3164 and not depend on stripe size.
3166 Severity : enhancement
3168 Description: Multiple MD RPCs in flight.
3169 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3170 To avoid overly-overloading MDS, introduce a limit on number of
3171 MDS RPCs in flight for a single client and add /proc controls
3172 to adjust this limit.
3174 Severity : enhancement
3176 Description: client read/write statistics
3177 Details : Add client read/write call usage stats for performance
3178 analysis of user processes.
3179 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3180 file access. extents_stats shows chunk size distribution.
3181 extents_stats_per_process show chunk size distribution per
3184 Severity : enhancement
3186 Description: mds statistics
3187 Details : Add detailed mds operations statistics in
3188 /proc/fs/lustre/mds/*/stats.
3192 Description: Failure of copying files with lustre special EAs.
3193 Details : Client side always return success for setxattr call for lustre
3194 special xattr (currently only "trusted.lov").
3199 Description: Refcount LNET uuids
3200 Details : The global LNET uuid list grew linearly with every startup;
3201 refcount repeated list entries instead of always adding to
3204 Severity : enhancement
3206 Description: Dynamic service threads
3207 Details : Within a small range, start extra service threads
3208 automatically when the request queue builds up.
3211 Frequency : mixed-endian client/server environments
3213 Description: mixed-endian crashes
3214 Details : The new msg_v2 system had some failures in mixed-endian
3217 Severity : enhancement
3219 Description: Easy OST removal
3220 Details : OSTs can be permanently deactivated with e.g. 'lctl
3221 conf_param lustre-OST0001.osc.active=0'
3223 Severity : enhancement
3225 Description: MGS proc entries
3226 Details : Added basic proc entries for the MGS showing what filesystems
3229 Severity : enhancement
3231 Description: provide MGS failover
3232 Details : Added config lock reacquisition after MGS server failover.
3234 Severity : enhancement
3236 Description: add Linux 2.4 support
3237 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3241 Description: a large application tries to do I/O to the same resource and dies
3242 in the middle of it.
3243 Details : Check the req->rq_arrival time after the call to
3244 ost_brw_lock_get(), but before we do anything about
3245 processing it & sending the BULK transfer request. This
3246 should help move old stale pending locks off the queue as
3247 quickly as obd_timeout.
3250 Frequency : when an incorrect nid is specified during startup
3252 Description: ptlrpc connect to non-existant node causes kernel crash
3253 Details : LNET can't be re-entered from an event callback, which
3254 happened when we expire a message after the export has been
3255 cleaned up. Instead, hand the zombie cleanup off to another
3258 Severity : enhancement
3260 Description: plain/inodebits lock performance improvement
3261 Details : Grouping plain/inodebits in granted list by their request modes
3262 and bits policy, thus improving the performance of search through
3266 Frequency : only if OST filesystem is corrupted
3268 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3269 Details : for a short time RPCs with bulk IO are in the replay list,
3270 but replay of bulk IOs is unimplemented. If the OST filesystem
3271 is corrupted due to disk cache incoherency and then replay is
3272 started it is possible to trip an assertion. Avoid putting
3273 committed RPCs into the replay list at all to avoid this issue.
3276 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3278 Description: System hang on startup
3279 Details : This bug allowed the liblustre (e.g. catamount) client to
3280 return to the app before handling all startup RPCs. This
3281 could leave the node unresponsive to lustre network traffic
3282 and manifested as a server ptllnd timeout.
3284 Severity : enhancement
3286 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3287 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3288 boolean to control whether to print peer debug info when a
3289 client's RPC times out.
3292 Frequency : only for kernels with patches from Lustre below 1.4.3
3294 Description: Remove old rdonly API
3295 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3298 Frequency : only for devices with external journals
3300 Description: Set external device read-only also
3301 Details : During a commanded failover stop, we set the disk device
3302 read-only while the server shuts down. We now also set any
3303 external journal device read-only at the same time.
3306 Frequency : when upgrading from 1.4 while trying to change parameters
3308 Description: The wrong (new) MDC name was used when setting parameters for
3309 upgraded MDT's. Also allows changing of OSC (and MDC)
3310 parameters if --writeconf is specified at tunefs upgrade time.
3313 Frequency : when setting specific ost indicies
3315 Description: QOS code breaks on skipped indicies
3316 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3317 created with --index need not be sequential.
3319 Severity : enhancement
3321 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3322 Details : The uninit_groups feature works in conjunction with the kernel
3323 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3324 up the pass1 processing of e2fsck. This is a read-only feature
3325 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3326 mount filesystems that have had this feature enabled.
3328 Severity : enhancement
3330 Description: Improve multi-block allocation algorithm to avoid fragmentation
3331 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3332 allocation locality and avoid filesystem fragmentation.
3334 ------------------------------------------------------------------------------
3336 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3338 * Support for kernels:
3339 2.4.21-47.0.1.EL (RHEL 3)
3340 2.6.5-7.283 (SLES 9)
3341 2.6.9-42.0.10.EL (RHEL 4)
3342 2.6.12.6 vanilla (kernel.org)
3343 2.6.16.27-0.9 (SLES 10)
3344 * Recommended e2fsprogs version: 1.39.cfs5
3346 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3350 Frequency : occasional, depends on client load and configuration
3351 Bugzilla : 12181, 12203
3352 Description: data loss for recently-modified files
3354 Details : In some cases it is possible that recently written or created
3355 files may not be written to disk in a timely manner (this should
3356 normally be within 30s unless client IO load is very high).
3357 The problem appears as zero-length files or files that are a
3358 multiple of 1MB in size after a client crash or client eviction
3359 that are missing data at the end of the file.
3361 This problem is more likely to be hit on clients where files are
3362 repeatedly created and unlinked in the same directory, clients
3363 have a large amount of RAM, have many CPUs, the filesystem has
3364 many OSTs, the clients are rebooted frequently, and/or the files
3365 are not accessed by other nodes after being written.
3367 The presence of the problem can be detected by looking at
3368 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3369 smaller than the second (nr_unused) then dirty files will not
3370 be flushed automatically to disk. "sync; sleep 10" should be
3371 run several times on the node before unmounting it to update
3372 Lustre (this is also safe to run on nodes without this problem).
3374 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3375 that can cause this same problem, so customers using that kernel
3376 also need to update the kernel in addition to Lustre. In order
3377 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3379 It is normal that files written just before a client crash (less
3380 than 30s) may not yet have been flushed to disk, even for local
3384 Frequency : frequent on thin XT3 nodes
3386 Description: UUID collision on thin XT3 Linux nodes
3387 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3388 randomly, since we relied on an insufficiently-seeded PRNG.
3393 Description: OSS hangs after "All ost request buffers busy"
3394 Details : A deadlock between quota and journal operations caused OSS
3395 hangs after printing "All ost request buffers busy."
3398 Frequency : always on liblustre builds
3400 Description: Cleanup compiler warnings on liblustre
3403 Frequency : always on liblustre builds on XT3
3405 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3409 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3410 > 32000 subdirectories
3411 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3412 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3413 subdirectory count crosses 32000. This will aid e2fsck to
3414 correctly handle more than 32000 subdirectories.
3417 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3419 Description: System hang on startup
3420 Details : This bug allowed the liblustre (e.g. catamount) client to
3421 return to the app before handling all startup RPCs. This
3422 could leave the node unresponsive to lustre network traffic
3423 and manifested as a server ptllnd timeout.
3425 Severity : enhancement
3427 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3428 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3429 boolean to control whether to print peer debug info when a
3430 client's RPC times out.
3435 Description: make O_SYNC working on 2.6 kernels
3436 Details : 2.6 kernels use different method for mark pages for write,
3437 so need add a code to lustre for O_SYNC work.
3442 Description: Failure to close file and release space on NFS
3443 Details : Put inode details into lock acquired in ll_intent_file_open.
3444 Use mdc_intent_lock in ll_intent_open to properly
3445 detect all kind of errors unhandled by mdc_enqueue.
3450 Description: proc file read during shutdown sometimes raced obd removal,
3452 Details : Add lock to prevent obd access after proc file removal.
3455 Frequency : Only for files larger than 4GB on 32-bit clients.
3457 Description: improperly doing page alignment of locks
3458 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3459 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3464 Description: RPCs being resent when they shouldn't be
3465 Details : Some RPCs that should not be resent are being resent. This
3466 can cause inconsistencies in the RPC state machine. Do not
3467 resend such requests.
3470 Frequency : rare, only with NFS export
3472 Description: Crash on NFS re-export node
3473 Details : under very unusual load conditions an assertion is hit in
3474 ll_intent_file_open()
3477 Frequency : only if OST filesystem is corrupted
3479 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3480 Details : for a short time RPCs with bulk IO are in the replay list,
3481 but replay of bulk IOs is unimplemented. If the OST filesystem
3482 is corrupted due to disk cache incoherency and then replay is
3483 started it is possible to trip an assertion. Avoid putting
3484 committed RPCs into the replay list at all to avoid this issue.
3489 Description: large O_DIRECT requests fail under memory pressure/fragmentation
3490 Details : Large single O_DIRECT read and write calls can fail to allocate
3491 a sufficiently large buffer to process the request. In case of
3492 allocation failure the allocation is retried with a smaller
3493 buffer and broken into smaller requests.
3495 Severity : enhancement
3497 Description: Add -o localflock option to simulate old noflock behaviour.
3498 Details : This will achieve local-only flock/fcntl locks coherentness.
3503 Description: versioning check is incomplete
3504 Details : Checking the version difference of client vs. server, report
3505 error if the gap is too big.
3510 Description: add support PG_writeback bit
3511 Details : add support for PG_writeback bit for Lustre, for more carefull
3512 work with page cache in 2.6 kernel. This also fix some deadlocks
3513 and remove hack for work O_SYNC with 2.6 kernel.
3515 Severity : enhancement
3517 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3518 Details : The uninit_groups feature works in conjunction with the kernel
3519 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3520 up the pass1 processing of e2fsck. This is a read-only feature
3521 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3522 mount filesystems that have had this feature enabled.
3524 Severity : enhancement
3526 Description: Improve multi-block allocation algorithm to avoid fragmentation
3527 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3528 allocation locality and avoid filesystem fragmentation.
3530 ------------------------------------------------------------------------------
3532 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
3534 * Support for kernels:
3535 2.6.9-42.0.3.EL (RHEL 4)
3536 2.6.5-7.276 (SLES 9)
3537 2.4.21-47.0.1.EL (RHEL 3)
3538 2.6.12.6 vanilla (kernel.org)
3539 2.6.16.21-0.8 (SLES10)
3540 * Recommended e2fsprogs version: 1.39.cfs2-0
3542 * The backwards-compatible /proc/sys/portals symlink has been removed
3543 in this release. Before upgrading, please ensure that you change
3544 any configuration scripts or /etc/sysctl.conf files that access
3545 /proc/sys/portals/* or sysctl portals.* to use the corresponding
3546 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
3547 in advance of the upgrade on any system running Lustre 1.4.6 or
3548 newer, since /proc/sys/lnet was added in that version.
3549 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3553 Frequency : only when quota is used
3555 Description: avoid scanning export list for quota master
3556 Details : Change the algorithms to avoid scanning export list in order
3557 to improve the efficiency.
git://git.whamcloud.com / fs / lustre-release.git / blob