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 2.6.32-504.23.4.el6 (RHEL6.6)
8 3.10.0-229.4.2.el7 (RHEL7.1)
9 3.0.101-0.47.52 (SLES11 SP3)
10 * Client known to build on unpatched kernels:
11 2.6.32-431.29.2.el6 (RHEL6.5)
12 2.6.32-504.23.4.el6 (RHEL6.6)
13 3.10.0-229.4.2.el7 (RHEL7.1)
14 3.0.101-0.47.52 (SLES11 SP3)
16 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
17 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
18 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
19 stack overflow. For more information, please refer to bugzilla 17630.
20 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
21 the re-exporting nodes to be mounted with "32bitapi" mount option
23 --------------------------------------------------------------------------------
25 03-10-2015 Intel Corporation
27 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
28 for currently supported client and server kernel versions.
29 * Server known to build on patched kernels:
30 2.6.32-431.29.2.el6 (RHEL6.5)
31 2.6.32-504.8.1.el6 (RHEL6.6)
32 3.0.101-0.46 (SLES11 SP3)
33 * Client known to build on unpatched kernels:
34 2.6.32-431.29.2.el6 (RHEL6.5)
35 2.6.32-504.8.1.el6 (RHEL6.6)
36 3.10.0-123.20.1.el7 (RHEL7)
37 3.0.101-0.46 (SLES11 SP3)
38 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
39 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
40 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
41 stack overflow. For more information, please refer to bugzilla 17630.
42 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
43 the re-exporting nodes to be mounted with "32bitapi" mount option
45 Severity : enhancement
47 Description: control OST-index in IDIF via ROCOMPAT flag.
48 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
49 last_rcvd file. For new formatted OST device, it will be auto set;
50 for the case of upgrading from old OST device, you can enable it
51 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
52 enabled, for new created OST-object, its IDIF-in-LMA will contain
53 the OST-index; for the existing OST-object, the OSD will convert
54 old format IDIF as new format IDIF with OST-index stored in the
55 LMA EA when accessing such OST-object or via OI scrub. Once such
56 flag is enabled, it cannot be reverted back, so the system cannot
57 be downgraded to the orignal incompatible version.
59 --------------------------------------------------------------------------------
61 07-30-2014 Intel Corporation
63 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
64 for currently supported client and server kernel versions.
65 * Server known to build on patched kernels:
66 2.6.32-431.20.3.el6 (RHEL6.5)
67 3.0.101-0.31 (SLES11 SP3)
68 * Client known to build on unpatched kernels:
69 2.6.32-431.20.3.el6 (RHEL6.5)
70 3.0.101-0.31 (SLES11 SP3)
73 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
74 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
75 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
76 stack overflow. For more information, please refer to bugzilla 17630.
77 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
78 the re-exporting nodes to be mounted with "32bitapi" mount option
80 --------------------------------------------------------------------------------
82 10-31-2013 Intel Corporation
84 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
85 * Server builds for kernels:
86 2.6.32-358.18.1.el6 (RHEL6.4)
87 * Client builds for unpatched kernels:
88 2.6.32-358.18.1.el6 (RHEL6.4)
89 3.0.92-0.8 (SLES11 SP3)
91 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
92 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
93 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
94 stack overflow. For more information, please refer to bugzilla 17630.
95 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
96 the re-exporting nodes to be mounted with "32bitapi" mount option
98 --------------------------------------------------------------------------------
100 05-30-2013 Intel Corporation
102 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
103 * Server builds for kernels:
104 2.6.32-358.6.2.el6 (RHEL6.4)
105 * Client builds for unpatched kernels:
106 2.6.32-358.6.2.el6 (RHEL6.4)
107 3.0.74-0.6.6 (SLES11 SP2)
109 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
110 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
111 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
112 stack overflow. For more information, please refer to bugzilla 17630.
113 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
114 the re-exporting nodes to be mounted with "32bitapi" mount option
116 --------------------------------------------------------------------------------
118 9-30-2012 Whamcloud, Inc.
120 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
121 * Server support for kernels:
122 2.6.32-279.5.1.el6 (RHEL6)
123 * Client support for unpatched kernels:
124 2.6.32-279.5.1.el6 (RHEL6)
126 2.6.18-238.19.1.el5 (RHEL5)
127 2.6.16.60-0.69.1 (SLES10)
128 * Recommended e2fsprogs version: 1.41.90.wc4
129 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
130 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
131 stack overflow. For more information, please refer to bugzilla 17630.
132 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
133 the re-exporting nodes to be mounted with "32bitapi" mount option
135 Severity : enhancement
137 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
139 Severity : enhancement
141 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
143 Severity : enhancement
145 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
147 Severity : enhancement
149 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
151 Severity : enhancement
153 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
155 --------------------------------------------------------------------------------
157 04-30-2012 Whamcloud, Inc.
159 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
160 * Server support for kernels:
161 2.6.32-220.4.2.el6 (RHEL6)
162 * Client support for unpatched kernels:
163 2.6.32-220.4.2.el6 (RHEL6)
165 2.6.18-238.19.1.el5 (RHEL5)
166 2.6.16.60-0.69.1 (SLES10)
167 * Recommended e2fsprogs version: 1.41.90.wc4
168 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
169 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
170 stack overflow. For more information, please refer to bugzilla 17630.
171 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
172 the re-exporting nodes to be mounted with "32bitapi" mount option
174 Severity : enhancement
176 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
178 Severity : enhancement
180 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
182 Severity : enhancement
184 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
186 Severity : enhancement
188 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
190 --------------------------------------------------------------------------------
192 09-30-2011 Whamcloud, Inc.
194 * Server support for kernels:
195 2.6.18-238.19.1.el5 (RHEL5)
196 2.6.32-131.6.1.el6 (RHEL6)
197 * Client support for unpatched kernels:
198 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
199 2.6.18-238.19.1.el5 (RHEL5)
200 2.6.32-131.6.1.el6 (RHEL6)
201 2.6.29.4-167.fc11 (FC11)
202 2.6.16.60-0.69.1 (SLES10)
204 * Recommended e2fsprogs version: 1.41.90.wc3
205 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
206 Lustre filesystem with 4K stack may cause a stack overflow. For more
207 information, please refer to bugzilla 17630.
208 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
209 mounted with "32bitapi" mount option
211 Severity : enhancement
212 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
214 Severity : enhancement
215 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
217 Severity : enhancement
218 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
221 Frequency : only with SLES10
223 Description: Use OFED "KMP" provided by Novell
224 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
225 Lustre is now built against this package. That means you need to
226 install the ofed-kmp package from Novell for the patchless client.
227 Note that the ofed-kmp that Novell ships may not exactly match the
228 kernel version but should still be compatible.
230 Severity : enhancement
232 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
233 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
235 --------------------------------------------------------------------------------
237 2010-07-15 Oracle, Inc.
239 * Server support for kernels:
240 2.6.18-164.11.1.el5 (RHEL 5)
241 2.6.18-164.11.1.0.1.el5 (OEL 5)
242 * Client support for unpatched kernels:
243 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
244 2.6.18-164.11.1.el5 (RHEL 5),
245 2.6.18-164.11.1.0.1.el5 (OEL 5)
246 2.6.16.60-0.42.8 (SLES 10),
248 2.6.29.4-167.fc11 (FC11)
249 * Recommended e2fsprogs version: 1.41.10-sun2
251 Severity : enhancement
253 Description: Distribute lfs_migrate script with lustre
254 Details : The lfs_migrate mentioned in the manual is now included in the
255 lustre tree in lustre/scripts and will distributed in lustre RPMs.
257 Severity : enhancement
259 Description: Failover nid list added to import proc file.
261 Severity : enhancement
263 Description: "som_preview" mount option required to use SOM
264 Details : The clients will need to use som_preview mount option
268 Description: Lustre does not do 1MB IOs to HW RAID
269 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
271 Severity : enhancement
273 Description: lfs quota output is not very convenient for awk/sed-parsing
274 Details : Some positions in lfs quota output table could be empty or
275 non-empty which made it hard to parse it with scripts, now
276 a dash is put instead of space where there is not supposed
281 Description: Update to OFED 1.5.1
282 Details : OFED 1.5.1 will be used in environments that don't use
283 vendor supplied OFED.
287 Description: Remove lnet. prefix from lctl params display
288 Details : Also renamed lnet.memused to lnet_memused to
293 Description: Use conf_param -d to remove permanant settings.
297 Description: Add list_param -R
298 Details : lctl list_param now supports recursive mode.
301 Bugzilla : 21829, 22312
302 Description: Fix llobdstat.
303 Details : 1. Now updating the write_bytes counter
304 2. Port script fixes from 1.8.
308 Description: decrease the usage of memory on clients.
309 Details : 1. On clients, recycle dentries and inodes unused.
310 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
315 Description: llobdstat fix and enhancement
316 Details : add a counter to set a limit to how many samples will be returned
317 fix a wildcard in the path to limit to obdfilter stats only
321 Description: lfs check only allowed for root
322 Details : Code cleanups and added a regresion test of non-root use of
327 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
328 Details : Fix hr->hr_index overload.
332 Description: Fix FIEMAP functionality.
336 Description: FC11 patchless client support added
340 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
341 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
345 Description: New acc-sm script and various test-framework enhancments.
349 Description: Previously landed patch was reverted.
353 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
357 Description: Add ldiskfs maxdirsize mount option.
361 Description: Fix mkfs.lustre support for 16TB LUNs.
365 Description: Print mmp_check_interval
366 Details : print mmp_check_interval and make it possible to abort
367 mount operation in case it takes too long.
371 Description: Add cascading_rw to lustre mpi tests.
375 Description: Store SOM data in EA.
376 Details : Also several SOM related cleanups.
380 Description: Add refcount to md_open_data
384 Description: Use refcount on lov_request_set to prevent memory corruption.
388 Description: Statahead: use parent dir's i_mutex for synchronization.
392 Description: loadgen improvements.
396 Description: Enable peer health detection in ksocklnd and ko2iblnd.
400 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
404 Description: Fix race on obd_devcie:md_stats
408 Description: Fix SLES 11 client builds.
409 Details : Resolved uninitalized pointer gcc warnings.
413 Description: Allow non-root access for "lfs check".
414 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
418 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
420 Severity : enhancement
422 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
423 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
427 Description: Sanity test_27p fails.
428 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
429 Sanity tests 27 were cleaned up and improved.
433 Description: Unify req format on client/servers
434 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
435 buffers and swabbers approach..
440 Description: drop join file stuff.
442 Severity : enhancement
444 Description: Add 2.6.27 and SLES11 (patchless client) support
448 Description: Fix in ptlrpc_expire_one_request() to print the signed time
451 Severity : enhancement
453 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
456 Severity : enhancement
458 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
460 Severity : enhancement
462 Description: correctly handle big reply message.
463 Details : send LNet event if reply is bigger than buffer and adjust this buffer
468 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
470 Severity : enhancement
472 Description: Add support for OEL5.
476 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
478 Severity : enhancement
480 Description: "weak-modules" support
481 Details : Implement "weak-modules" support which enables kernel modules
482 to be used with any kernel that implements the same kABI. In
483 order to achieve this modules are now installed in
484 /lib/modules/$(uname -r)/updates/kernel on all distributions.
488 Description: client could not reconnect to OST because of an active request.
489 Details : The client now retries to reconnect to the same server, if a
490 connect request failed with EBUSY or -EAGAIN. Test case 35b
491 conf-sanity.sh has been created.
495 Description: Don't allow make backward step on assignin osc next id.
496 Details : race between allocation next id and ll_sync thread can be cause
497 of set wrong osc next id and can be kill valid ost objects.
501 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
505 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
509 Description: Error handling in osc_statfs_interpret() has been improved.
510 Details : Check in osc_statfs_interpret() for EBADR.
514 Description: Do not send statfs() requests to OSTs disabled by administrator.
515 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
517 Severity : enhancement
519 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
521 Severity : enhancement
523 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
525 Severity : enhancement
527 Description: Enhancement for lfs(1) command to use numeric uid/gid.
531 Description: Improved cleanup procedure for conf-sanity test_46a.
535 Description: Do not start bulk transfer, if client tried to reconnect.
536 Details : Do not start bulk transfer, if client tried to reconnect,
537 but failed due to active rpcs. Check for exp_abort_active_req
538 has been implemented.
542 Description: Prevent inconsistences between linux and lustre mount structures.
543 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
544 Make the sleep interruptible.
546 Severity : enhancement
548 Description: provide server to client comms path
549 Details : server to client communications path via new LDLM_SET_INFO rpc
553 Description: truncate starts GFP_FS allocation under transaction causing deadlock
554 Details : ldiskfs_truncate calls grab_cache_page which may start page
555 allocation under an open transaction. This may lead to
556 calling prune_icache with consequent lustre reentrance.
560 Description: send correctly lsm on open replay
561 Details : MDS is trust to LSM size on replay open, but client can set wrong size
566 Description: enable client interface failover
567 Details : When a child reconnects from another NID, properly update export
568 nid hash position and ldlm reverse import.
570 Severity : enhancement
572 Description: Communicate OST degraded/readonly state via statfs to MDS
573 Details : Flags in the statfs returned from OSTs indicate whether the
574 OST is in a degraded RAID state, or if the filesystem has
575 turned read-only after a filesystem error is detected.
580 Description: don't panic if EPROTO was hit when reading symlink
581 Details : correctly handling request reference in error cases.
583 Severity : enhancement
585 Description: Add LustreNetLink, a kernel-userspace communcation path.
587 Severity : enhancement
589 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
594 Description: access to llog context before init.
595 Details : move handling CATALOGS file at osc layer and forbid access to llog
599 Frequency : rare, only when client is writing to OST on local node
601 Description: Avoid deadlock for local client writes
602 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
603 memory freeing context. This allows OST threads to set the
604 PF_MEMALLOC flag on task structures in order to allocate memory
605 from reserved pools and complete IO.
606 Use GFP_HIGHUSER for OST allocations for non-local client writes,
607 so that the OST threads generate memory pressure and allow
608 inactive pages to be reclaimed.
610 Severity : enhancement
612 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
617 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
618 Details : move ldlm namespace creation in setup phase to avoid grab
619 _lprocfs_lock with cli_sem held.
623 Description: Temporarily disable grant shrink.
624 Details : Disable the feature for debugging.
627 Frequency : only when formatting test filesystems
629 Description: Unable to run several mkfs.lustre on loop devices at the same time
630 Details : mkfs.lustre returns error 256 on the concurrent loop devices
631 formatting. The solution is to proper handle the error.
633 Severity : enhancement
635 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
637 Severity : enhancement
639 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
644 Description: resolve race between obd_disconnect and class_disconnect_exports
645 Details : if obd_disconnect will be called to already disconnected export he
646 forget release one reference and osc module can't unloaded.
648 Severity : enhancement
650 Description: Allow tuning service thread via /proc
651 Details : For each service a new
652 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
653 created that can be used to set min/max thread counts, and get the
654 current number of running threads.
659 Descriptoin: don't return error if have partially created objects for file.
660 Details : lov_update_create_set uses set->set_success as index for created
661 objects, so if some requests will be failed, they will have hole
662 at end of array and qos_shrink_lsm for allocate correct lsm.
664 Severity : enhancement
666 Description: Update OFED support to 1.4.1
671 Description: Reduce small size read RPC
672 Details : Set read-ahead limit for every file and only do read-ahead when
673 available read-ahead pages are bigger than 1M to avoid small size
676 Severity : enhancement
678 Description: move AT tunable parameters for more consistent usage
679 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
681 Severity : enhancement
683 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
684 Details : allow skip disconnected ost for send statfs request and hide error
690 Description: fix racy locking of mballoc block bitmaps causing BUG
691 Details : The locking of the mballoc buddy bitmap and the in-memory
692 block bitmap was using two different spin locks in some
693 cases. This made it possible to incorrectly access the
694 mballoc bitmap while another process was modifying it,
695 causing a sanity assertion to fail. While no on-disk corruption
696 was reported, there was some risk of this happening.
699 Frequency : rare, on llog test 6
701 Descriptoin: don't allow connect to already connected import
702 Details : allowing connect to already connected import is hide connecting problem.
707 Descriptoin: allow kill process which wait statahead result
708 Details : for some reasons 'ls' can stick in waiting result from statahead,
709 in this case need way for kill this process.
711 Severity : enhancement
713 Description: Add state history info file, enhance import info file
714 Details : Track import connection state changes in a new osc/mdc proc file;
715 add overview-type data to the osc/mdc import proc file.
717 Severity : enhancement
719 Description: MDS create should not wait for statfs RPC while holding DLM lock.
721 Severity : enhancement
723 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
728 Descriptoin: OST grant too much space to client even there are not enough space.
729 Details : Client will shrink its grant cache to OST if there are no write
730 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
731 this grant cache if there are already not enough avaible space
732 (left_space < total_clients * 32M).
735 Frequency : start MDS on uncleanly shutdowned MDS device
737 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
738 Details : stay in waiting mds<>ost recovery finished produce random bugs
739 due race between two ll_sync thread for one lov target. send
740 ACTIVATE event only if connect realy finished and import have
744 Frequency : rare, connect and disconnect target at same time
746 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
747 Details : don't call obd_disconnect under lov_lock. this long time
748 operation and can block ptlrpcd which answer to connect request.
753 Descriptoin: don't lose wakeup for imp_recovery_waitq
754 Details : recover_import_no_retry or invalidate_import and import_close can
755 both sleep on imp_recovery_waitq, but we was send only one wakeup
759 Frequency : always with long access acl
761 Descriptoin: mds can't pack reply with long acl.
762 Details : mds don't control size of acl but they limited by reint/getattr
765 Severity : enhancement
767 Description: Update to SLES10 kernel-2.6.16.60-0.33.
769 Severity : enhancement
771 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
774 Frequency : start MDS on uncleanly shutdowned MDS device
776 Descriptoin: aborting recovery hang on MDS
777 Details : don't throttle destroy RPCs for the MDT.
780 Frequency : on remount
782 Description: external journal device not working after the remount
783 Details : clear dev_rdonly flag for external journal devices in
789 Description: shutdown vs evict race
790 Details : client_disconnect_export vs connect request race.
791 if client will evicted at this time - we start invalidate
792 thread without referece to import and import can be freed
796 Frequency : rare, need acl's on inode.
798 Description: client can't handle ost additional correctly
799 Details : if ost was added after client connected to mds client can have
800 hit lnet_try_match_md ... to big messages to wide striped files.
801 in this case need teach client to handle config events about add
802 lov target and update client max ea size at that event.
804 Severity : enhancement
806 Description: Changelogs
807 Details : Changelogs are a lightweight mechanism to track filesystem
808 metadata and namespace changes. The changelog is recorded
809 permanently on the MDTs, and is periodically "consumed" / purged
810 when records are no longer needed.
812 Severity : enhancement
814 Description: compact fld format with extents
815 Details : Store range of seq rather than every seq in FLD. Seq
816 controller update FLD rather than clients. In Case of CMD, mdt0
817 has FLD, all other metadata server act as non persistent proxy
818 for FLD queries and cache fld entries in fld cache.
823 Description: don't skip ost target if they assigned to file
824 Details : Drop slow OSCs if we can, but not for requested start idx.
825 This means "if OSC is slow and it is not the requested
826 start OST, then it can be skipped, otherwise skip it only
827 if it is inactive/recovering/out-of-space.
831 Description: more cleanup in mds_lov
832 Details : not send LOV EA under replay, we can't know about they size at this
833 time. Don't allow client connect to mds before any ost connected,
834 for avoid problems with LOV EA size and returning EIO to client.
836 Severity : enhancement
838 Description: Interoperability at server side (Disk interoperability)
840 Severity : enhancement
842 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
844 Severity : enhancement
846 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
848 Severity : enhancement
850 Description: New client IO stack (CLIO).
852 Severity : enhancement
854 Description: Commit on sharing. Eliminate inter-client dependencies between
855 uncommitted transactions by doing transaction commits.
856 Thereby clients may recovery independently.
859 Frequency : Create a symlink file with a very long name
861 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
862 Details : If there is no extra space in the request for early cancels,
863 ldlm_req_handles_avail() returns 0 instead of a negative value.
865 Severity : enhancement
867 Description: Add /proc entry for import status
868 Details : The mdc, osc, and mgc import directories now have
869 an import directory that contains useful import data for debugging
872 Severity : enhancement
874 Description: Re-disable certain /proc logging
875 Details : Enable and disable client's offset_stats, extents_stats and
876 extents_stats_per_process stats logging on the fly.
879 Frequency : Only on FC kernels 2.6.22+
881 Description: oops in statahead
882 Details : Do not drop reference count for the dentry from VFS when lookup,
883 VFS will do that by itself.
885 Severity : enhancement
887 Description: Generic /proc file permissions
888 Details : Set /Proc file permissions in a more generic way to enable non-
889 root users operate on some /proc files.
893 Description: Hitting mdc_commit_close() ASSERTION
894 Details : Properly handle request reference release in
895 ll_release_openhandle().
899 Description: quota recovery deadlock during mds failover
900 Details : This patch includes att18982, att18236, att18237 in bz14840.
902 1. fix osts hang when mds does failover with quotaon
903 2. prevent watchdog storm when osts threads wait for the
908 Frequency : only patchless client
909 Description: add workaround for race between add/remove dentry from hash
911 Severity : enhancement
913 Description: Allow OST glimpses to return PW locks
917 Description: LBUG when llog conf file is full
918 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
922 Description: Prevent import from entering FULL state when server in recovery
926 Description: service mount cannot take device name with ":"
927 Details : Only when device name contains ":/" will mount treat it as
933 Description: replace ptlrpcd with the statahead thread to interpret the async
934 statahead RPC callback
938 Frequency : on recovery
939 Description: I/O failures after umount during fail back
940 Details : if client reconnected to restarted server we need join to recovery
941 instead of find server handler is changed and process self
942 eviction with cancel all locks.
944 Severity : enhancement
946 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
948 Severity : enhancement
950 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
952 Severity : enhancement
954 Description: Upcall on Lustre log has been dumped
955 Details : Allow for a user mode script to be called once a Lustre log has
956 been dumped. It passes the filename of the dumped log to the
957 script, the location of the script can be specified via
958 /proc/sys/lnet/debug_log_upcall.
963 Description: avoid idr_remove called for id which is not allocated.
964 Details : Move assigment s_dev for clustered nfs to end of initialization,
965 to avoid problem with error handling.
970 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
971 Details : When connection is reused this not moved from CONN_UNUSED_HASH
972 into CONN_USED_HASH and this prodice warning when put connection
973 again in unused hash.
976 Severity : enhancement
978 Description: File striping can now be set to use an arbitrary pool of OSTs.
980 Severity : enhancement
982 Description: Export bytes_read/bytes_write count on OSC/OST.
986 Description: Early reply size mismatch, MGC loses connection
987 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
988 the connect flags are properly negotiated.
993 Description: quotas are not honored with O_DIRECT
994 Details : all writes with the flag O_DIRECT will use grants which leads to
995 this problem. Now using OBD_BRW_SYNC to guard this.
999 Description: add quota statistics
1000 Details : 1. sort out quota proc entries and proc code.
1001 2. add quota statistics
1003 Severity : enhancement
1005 Description: enable quota support for HEAD.
1009 Description: Properly propagate oinfo flags from lov to osc for statfs
1010 Details : restore missing copy oi_flags to lov requests.
1012 Severity : enhancement
1014 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
1015 : l_getgroups(8), lst(8), routerstat(8)
1016 Details : included man pages for llobdstat(8), llstat(8),
1017 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
1019 Severity : enhancement
1021 Description: configure's --enable-quota should check the
1022 : kernel .config for CONFIG_QUOTA
1023 Details : configure is terminated if --enable-quota is passed but
1024 : no quota support is in kernel
1028 Description: Remove portals compatibility
1029 Details : Remove portals compatibility, not interoperable with releases
1034 Description: Resolve device initialization race
1035 Details : Prevent proc handler from accessing devices added to the
1036 obd_devs array but yet be intialized.
1038 Severity : enhancement
1040 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1042 Severity : enhancement
1044 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1049 Description: Using wrong pointer in osc_brw_prep_request
1050 Details : Access to array[-1] can produce panic if kernel compiled with
1051 CONFIG_PAGE_ALLOC enabled
1055 Description: Client runs out of low memory
1056 Details : Consider only lowmem when counting initial number of llap pages
1060 Description: *optional* service tags registration
1061 Details : if the "service tags" package is installed on a Lustre node
1062 When the filesystem is mounted, a local-node service tag will
1063 be created. See http://inventory.sun.com/ for more information
1064 about the Service Tags asset management system.
1068 Description: Kernel BUG tries to release flock
1069 Details : Lustre does not destroy flock lock before last reference goes
1070 away. So always drop flock locks when client is evicted and
1071 perform unlock regardless of successfulness of speaking to MDS.
1075 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1079 Description: sanity test 65a fails if stripecount of -1 is set
1080 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1085 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1086 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1089 Severity : enhancement
1091 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1095 Description: do not process already freed flock
1096 Details : flock can possibly be freed by another thread before it reaches
1097 to ldlm_flock_completion_ast.
1101 Description: LBUG during stress test
1102 Details : Need properly lock accesses the flock deadlock detection list.
1106 Description: oops in page fault handler
1107 Details : kernel page fault handler can return two special 'pages' in error
1108 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1112 Description: timeout with invalidate import.
1113 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1114 should be handled by ptlrpcd. This produce long age waiting and
1115 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1117 Severity : enhancement
1119 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1123 Description: enable MGS and MDT services start separately
1124 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1125 a co-located MGS without starting the MGS, which is a complement
1126 to 'nosvc' mount option.
1130 Frequency : after recovery
1131 Description: precreate to many object's after del orphan.
1132 Details : del orphan st in oscc last_id == next_id and this triger growing
1133 count of precreated objects. Set flag LOW to skip increase count
1134 of precreated objects.
1138 Frequency : rare, on clear nid stats
1139 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1140 Details : when clean nid stats sometimes try destroy live entry,
1141 and this produce panic in free.
1145 Description: Stack overflow during MDS log replay
1146 ease stack pressure by using a thread dealing llog_process.
1150 Description: wait until IO finished before start new when do lock cancel.
1151 Details : VM protocol want old IO finished before start new, in this case
1152 need wait until PG_writeback is cleared until check dirty flag and
1153 call writepages in lock cancel callback.
1155 Severity : enhancement
1157 Description: using special macro for print time and cleanup in includes.
1161 Description: mds_mfd_close() ASSERTION(rc == 0)
1162 Details : In mds_mfd_close(), we need protect inode's writecount change
1163 within its orphan write semaphore to prevent possible races.
1167 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1171 Frequency : rare, on shutdown ost
1172 Description: don't hit live lock with umount ost.
1173 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1174 use shrink_dcache_sb instead.
1178 Description: don't panic with use echo client
1179 Details : echo client pass NULL as client nid pointer and this produce null
1180 pointer dereference.
1184 Description: fix build on ppc32
1185 Details : compile code with -m64 flag produce wrong object file for ppc32.
1189 Description: add message levels for liblustreapi
1193 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1194 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1195 will result in an -EAGAIN and in the exit call path we call
1196 alloc_rr() which will with increasing aggressiveness attempt to
1197 aquire precreated objects on the minimum number of required OSCs.
1201 Description: Use old size assignment to avoid deadlock
1202 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1203 the scheduling while holding a spinlock. We do not need locking
1204 for size in ll_update_inode() because size is only updated from
1205 the MDS for directories or files without objects, so there is no
1206 other place to do the update, and concurrent access to such inodes
1207 are protected by the inode lock.
1211 Description: resolve "_IOWR redefined" build error on SLES10
1215 Description: dump the memory debugging after all modules are unloaded to
1216 suppress false negative in conf_sanity test 39
1218 Severity : enhancement
1220 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1225 Description: fix SLES kernel versioning
1226 Details : the kernel version for our SLES 10 kernel did not include a "-"
1227 before the "smp" at the end. while this was not a problem in
1228 general, it did mean that software trying to use the kernel
1229 version to try to detect a vendor specific kernel would fail.
1230 this was most evident by the OFED build scripts.
1234 Description: Don't update lov_desc members until making sure they are valid
1235 Details : When updating lov_desc members via proc fs, need fix their
1236 validities before doing the real update.
1240 Description: don't put request into delay list while invalidate in flight.
1241 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1242 import in flight. this produce timeout for invalidate and sometimes
1243 can cause stale data.
1247 Frequency : on ppc only
1248 Description: not convert ost objects for directory because it's not exist.
1249 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1253 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1255 Severity : enhancement
1257 Description: Update to support 2.6.22.14 vanilla kernel.
1261 Frequency : rare, on recovery
1262 Description: read procfs can produce deadlock in some situation
1263 Details : Holding lprocfs lock which send rpc can produce block for destroy
1264 obd objects and this also block reconnect with -EALREADY. This
1265 isn't fix all lprocfs bugs - but make it rare.
1267 Severity : enhancement
1269 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1272 Frequency : frequent on X2 node
1274 Description: mdc_set_open_replay_data LBUG
1275 Details : Set replay data for requests that are eligible for replay.
1279 Description: lustre_mgs: operation 101 on unconnected MGS
1280 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1281 MGC, and late on MGC cannot successfully connect to MGS and a lot
1282 of the error messages complaining that MGS is not connected.
1286 Frequency : on network error
1287 Description: panic with double free request if network error
1288 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1289 but it's true only for synchronus enqueue, for async enqueue
1290 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1293 Severity : enhancement
1295 Description: client-side metadata stat-ahead during readdir(directory readahead)
1296 Details : perform client-side metadata stat-ahead when the client detects
1297 readdir and sequential stat of dir entries therein
1300 Frequency : on start mds
1302 Description: Implement get_info(last_id) in obdfilter.
1305 Frequency : occasional
1307 Description: Correctly check stale fid, not start epoch if ost not support SOM
1308 Details : open with flag O_CREATE need set old fid in op_fid3 because
1309 op_fid2 was overwritten with new generated fid, but mds can answer
1310 with one of these two fids and both is not stale. Setattr
1311 incorrectly started an epoch and assume will be called
1312 done_writing, but without SOM done_writing ever being called.
1315 Frequency : rare, depends on device drivers and load
1317 Description: MDS or OSS nodes crash due to stack overflow
1318 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1319 In some cases, in conjunction with device drivers that use a lot
1320 of stack the MDS (or possibly OSS) service threads could overflow
1321 the stack. One change which was identified to consume additional
1322 stack has been reworked to avoid the extra stack usage.
1325 Frequency : occasional
1327 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1328 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1329 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1330 oscc_has_objects and see OSC has no objests and call
1331 oscc_internal_create to resend create request.
1333 Severity : enhancement
1335 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1337 Severity : enhancement
1339 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1342 Frequency : very rare
1344 Description: Fix replay if there is an un-replied request and open
1345 Details : In some cases, older replay request will revert the
1346 mcd->mcd_last_xid on MDS which is used to record the client's
1347 latest sent request.
1349 Severity : enhancement
1351 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1353 Severity : enhancement
1355 Description: Add rhel5 support to HEAD.
1357 Serverity : enhancement
1359 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1364 Description: Don't allow skipping OSTs if index has been specified.
1365 Details : Don't allow skipping OSTs if index has been specified, make
1366 locking in internal create lots better.
1370 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1371 Details : access to bitfield in structure is always rounded to long
1372 and this produce problem with not atomic change any bit.
1376 Description: Lustre make rpms failed.
1377 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1378 builds Lustre rpms from tarball.
1381 Frequency : rare on shutdown ost
1383 Description: If llog cancel was not send before clean_exports phase, this can
1384 produce deadlock in llog code.
1385 Details : If llog thread has last reference to obd and call class_import_put
1386 this produce deadlock because llog_cleanup_commit_master wait when
1387 last llog_commit_thread exited, but this never success because was
1388 called from llog_commit_thread.
1392 Description: allow userland application know is lost one of stripes.
1393 Details : fill lvb_blocks with error code on ost and return it to
1394 application if error flag found.
1398 Description: NULL lov_tgts causing MDS oops
1399 Details : more safe checks for NULL lov_tgts for avoid oops.
1401 Severity : enhancement
1403 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1407 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1408 Details : If an OST is down the MDS will hang indefinitely in
1409 obd_statfs_rqset() waiting for the statfs data. While for
1410 MDS QOS usage of statfs, it should not stuck in waiting.
1412 Severity : enhancement
1414 Description: remote_acl support
1415 Details : Support ACL-based permission check for remote user.
1416 Support setfacl/getfacl for remote user with the utils
1417 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1418 the system "{s,g}etfacl" utils.
1420 Severity : enhancement
1422 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1424 Severity : enhancement
1426 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1430 Description: make mgs_setparam() handle fsname containing dash
1431 Details : fsname containing a dash does not work with lctl conf_param
1433 Severity : enhancement
1435 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1437 Severity : enhancement
1439 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1443 Frequency : rare, at shutdown
1444 Description: access already free / zero obd_namespace.
1445 Details : if client_disconnect_export was called without force flag set,
1446 and exist connect request in flight, this can produce access to
1447 NULL pointer (or already free pointer) when connect_interpret
1448 store ocd flags in obd_namespace.
1452 Frequency : only at startup
1453 Description: not alloc memory with spinlock held.
1454 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1455 if any spinlock held.
1457 Severity : enhancement
1459 Description: make lustre randomly fail allocating memory
1460 Details : Make lustre randomly failed allocating memory for testing purpose.
1462 Severity : enhancement
1464 Description: lost problems with lov objid file
1465 Details : Fixes some scability and access to not inited memory problems
1466 in work with lov objdid file.
1471 Description: lfs find does not continue on file error
1472 Details : Continue other files processing when a file/dir is absent.
1476 Description: Inconsistent usage of lustre_pack_reply()
1477 Details : Standardize the usage of lustre_pack_reply() such that it
1478 always generate a CERROR on failure.
1481 Frequency : occasional
1483 Description: MDS hang or stay in waiting lock
1484 Details : If client receive lock with CBPENDING flag ldlm need send lock
1485 cancel as separate rpc, to avoid situation when cancel request
1486 can't processed due all i/o threads stay in wait lock.
1490 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1494 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1498 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1502 Description: Update to RHEL4 latest kernel.
1504 Severity : enhancement
1506 Description: Build SLES10 patchless client fails
1507 Details : The configure was broken by run ./configure with
1508 --with-linux-obj=.... argument for patchless client. When the
1509 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1510 can't search header adequately. Use absolute path such as
1511 -I($LINUX)/include instead.
1515 Description: interrupt oig_wait produce painc on resend.
1516 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1517 private set, and this produce situation when rq_ptlrpcd_data not
1518 copyed to new allocated request and triggered LBUG on assert
1519 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1520 ptlrpcd set if request is changed and can be safety changed to use
1525 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1526 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1527 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1528 these macros and replace them with their difinitions instead.
1532 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1533 Details : Update which_patch & target file for SLES10 latest kernel.
1536 Description: Remove client patches from SLES 10 kernel.
1537 Details : This causes SLES 10 clients to behave as patchless clients
1538 even on a Lustre-patched (server) kernel.
1540 Severity : enhancement
1542 Description: self-adjustable client's lru lists
1543 Details : use adaptive algorithm for managing client cached locks lru
1544 lists according to current server load, other client's work
1545 pattern, memory activities, etc. Both, server and client
1546 side namespaces provide number of proc tunables for controlling
1549 Severity : enhancement
1551 Description: light-weight GSS support
1552 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1553 and reduce performance overhead.
1555 Severity : enhancement
1557 Description: Linux keyring support
1558 Details : Support using service of Linux keyring for Lustre GSS internal
1559 context refresh/cache mechanism.
1563 Description: Fix errors in lfs documentation
1564 Details : Fixes man pages
1568 Description: don't use GFP_* in generic Lustre code.
1569 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1573 Description: obdclass is limited by single OBD_ALLOC(idarray)
1574 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1578 Description: warnings with build patchless client with vanila 2.6.19 and up
1579 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1580 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1584 Frequency : Only for SLES
1585 Description: sanity_quota fail test_1
1586 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1587 file, which makes TSTID[2] inunique.
1591 Frequency : Only for SLES9
1592 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1593 Details : Update target/ChangeLog/which_patch .
1597 Frequency : Only for test_10 in sanity-quota.sh
1598 Description: a bug in quota test code
1599 Details : checking a test flag in a wrong place
1603 Frequency : Only for test_13 in sanity-quota.sh
1604 Description: a bug in quota test script
1605 Details : shouldn't check overfull allocated quota
1609 Description: jbd statistics
1610 Details : Port older jbd statistics patch for sles10
1612 Severity : enhancement
1614 Description: Add printing inode info into message about error in writepage.
1619 Description: reply_lock_interpret crash due to race with it and lock cancel.
1620 Details : Do not replay locks that are being cancelled. Do not reference
1621 locks by their address during replay, just by their handle.
1625 Frequency : When flocks are used.
1626 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1627 Details : Flock locks might destroy just granted lock if it could be merged
1628 with another existing flock, this is done in completion handler,
1629 so teach ldlm_cli_enquque_fini that this is a valid case for
1635 Description: Oops in read and write path when failing to allocate lock.
1636 Details : Check if lock allocation failed and return error back.
1640 Description: lstripe command fails for valid OST index
1641 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1642 instead of lov->desc.ld_active_tgt_count.
1646 Description: sanity.sh failed test 103
1647 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1652 Description: df doesn't work properly if diskfs blocksize != 4K
1653 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1657 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1658 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1660 Severity : enhancement
1662 Description: Adaptive timeouts
1663 Details : RPC timeouts adapt to changing server load and network
1664 conditions to reduce resend attempts and improve recovery time.
1668 Description: llapi_file_create() does not allow some changes
1669 Details : add llapi_file_open() that allows specifying the mode and
1670 open flags, and also returns an open file handle.
1674 Description: merge and cleanup kernel patches.
1675 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1679 Description: Add journal checksum support.(Kernel part)
1680 Details : The journal checksum feature adds two new flags i.e
1681 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1682 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1683 indicates that the commit block contains the checksum for
1684 the blocks described by the descriptor blocks. Now commit
1685 record can be sent to disk without waiting for descriptor
1686 blocks to be written to disk. This behavior is controlled
1687 using JBD2_FEATURE_ASYNC_COMMIT flag.
1691 Description: OSS needs mutliple precreate threads
1692 Details : Add ability to start more than one create thread per OSS.
1696 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1697 Details : execute lfs setstripe on client
1701 Description: mds_obd_create error creating tmp object
1702 Details : When the user sets quota on root, llog will be affected and can't
1703 create files and write files.
1706 Frequency : Always on ia64 patchless client, and possibly others.
1708 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1709 Details : This allows the patchless client to be loaded on architectures
1710 without this export.
1714 Description: RedHat Update kernel for RHEL5
1715 Details : Add the kernel config file for RHEL5.
1719 Description: RedHat Update kernel for RHEL5
1720 Details : Modify the kernel config file more closer RHEL5.
1724 Description: Build failure against Centos5 (RHEL5)
1725 Details : Define PAGE_SIZE when it isn't present.
1729 Description: test_7 on sanity-quota.sh can't be used on separate machines
1730 Details : add facet to handle it
1734 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1735 Details : with NFS, the anon dentry's parent was set to itself in
1736 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1737 corresponding dentry other than use rec->ur_name.
1739 Severity : enhancement
1741 Description: lfs setstripe enhancement
1742 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1746 Description: enable data checksumming by default
1747 Details : enable checksum by default, allow --disable-checksum
1748 configure option and "-o nochecksum" mount option. Checksums
1749 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1753 Description: lustre support for RHEL5
1754 Details : Add support for RHEL5.
1758 Description: Client eviction due to failover config
1759 Details : after a connection loss, the lustre client should attempt to
1760 reconnect to the last active server first before trying the
1761 other potential connections.
1765 Description: when mds and osts use different quota unit(32bit and 64bit),
1766 quota will be released repeatly.
1767 Details : void sending multiple quota reqs to mds, which will keep the
1768 status between the reqs.
1772 Description: osts not allocated evenly to files
1773 Details : change the condition to increase offset_idx
1776 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1778 Description: Data corruption for OSTs that are formatted larger than 2TB
1780 Details : When generating the bio request for lustre file writes the
1781 sector number would overflow a temporary variable before being
1782 used for the IO. The data reads correctly from Lustre (which
1783 will overflow in a similar manner) but other file data or
1784 filesystem metadata may be corrupted in some cases.
1788 Description: Tune the kernel for good SCSI performance.
1789 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1790 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1795 Description: rewrite ext2-derived code in obdclass/uuid.c
1796 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1797 from scratch preserving functionality.
1801 Description: "lfs find -obd UUID" prints directories
1802 Details : "lfs find -obd UUID" will return all directory names instead
1803 of just file names. It is incorrect because the directories
1804 do not reside on the OSTs.
1808 Description: use i_size_read and i_size_write in 2.6 port
1809 Details : replace inode->i_size access with i_size_read/write()
1812 Frequency : when removing large files
1814 Description: scheduling issue during removal of large Lustre files
1815 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1816 It causes scheduling issues when removing large files (17TB in the
1820 Frequency : only with liblustre clients on XT3
1822 Description: evictions taking too long
1823 Details : allow llrd to evict clients directly on OSTs
1826 Frequency : only on ppc
1828 Description: /proc/fs/lustre/devices broken on ppc
1829 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1830 We should make sure the type of 'index' is loff_t and then cast
1831 explicitly as needed below. Do not assign an explicitly cast
1835 Frequency : only for rhel5
1837 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1838 Details : Modify the target file & which_kernel.
1840 Severity : enhancement
1842 Description: omit set fsid for export NFS
1843 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1844 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1848 Frequency : Always, for kernels after 2.6.16
1849 Description: Fix warning idr_remove called for id=.. which is not allocated.
1850 Details : Last kernels save old s_dev before kill super and not allow
1851 to restore from callback - restore it before call kill_anon_super.
1855 Description: buffer overruns could theoretically occur
1856 Details : llapi_semantic_traverse() modifies the "path" argument by
1857 appending values to the end of the origin string, and a
1858 overrun may occur. Adding buffer overrun check in liblustreapi.
1862 Description: Fix error on 'ls .' at the top of the Lustre mount.
1863 Details : Don't revalidate dentry if it is a root dentry.
1867 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1868 Details : Modify vm-tunables-rhel4.patch.
1872 Description: Kernel config for 2.6.18-vanilla.
1873 Details : Modify targets/2.6-vanilla.target.in.
1874 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1875 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1876 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1877 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1881 Description: improve handling recoverable errors
1882 Details : if request processig with error which can be recoverable on server
1883 request should be resend, otherwise page released from cache and
1888 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1889 Details : Modify target file & which_patch.
1890 A flaw was found in the IA32 system call emulation provided
1891 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1892 value could be stored in the %RAX register, which could trigger an
1893 out-of-bounds system call table access. An untrusted local user
1894 could exploit this flaw to run code in the kernel
1895 (ie a root privilege escalation). (CVE-2007-4573).
1899 Description: O_DIRECT bypasses client statistics.
1900 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1901 read_ahead_stats were updated. copied the stats section from
1902 osc_send_oap_rpc() into async_internal().
1906 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1910 Description: change order of libsysio includes
1911 Details : '#include sysio.h' should always come before '#include xtio.h'
1915 Description: handle "serious error: objid * already exists" more gracefully
1916 Details : If LAST_ID value on disk is smaller than the objects existing in
1917 the O/0/d* directories, it indicates disk corruption and causes an
1918 LBUG(). If the object is 0-length, then we should use the existing
1919 object. This will help to avoid a full fsck in most cases.
1921 Severity : enhancement
1923 Description: adapt the lustre_config script to support the upgrade case
1924 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1925 server targets to 1.6 in parallel.
1929 Description: To avoid grant space > avaible space when the disk is almost
1930 full. Without this patch you might see the error "grant XXXX >
1931 available" or some LBUG about grant, when the disk is almost
1933 Details : In filter_check_grant, for non_grant cache write, we should
1934 check the left space by if (*left > ungranted + bytes), instead
1935 of (*left > ungranted), because only we are sure the left space
1936 is enough for another "bytes", then the ungrant space should be
1937 increase. In client, we should update cl_avail_grant only there
1938 is OBD_MD_FLGRANT in the reply.
1942 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1943 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1944 described in CVE-2007-4573. This problem could allow untrusted
1945 local users to gain root access.
1948 Frequency : when using O_DIRECT and quotas
1950 Description: Incorrect file ownership on O_DIRECT output files
1951 Details : block usage reported by 'lfs quota' does not take into account
1952 files that have been written with O_DIRECT.
1957 Description: touch file failed when fs is not full
1958 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1959 otherwise we can get ENOSP while fs is not full.
1963 Description: parallel lock callbacks
1964 Details : Instead of sending blocking and completion callbacks as separated
1965 requests, adding them to a set and sending in parallel.
1968 Frequency : only for Cray XT3
1969 Bugzilla : 12829/13455
1970 Description: Changing primary group doesn't change the group lustre assigns to
1972 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
1973 overridden with the primary group provided by the group upcall,
1974 whereas the supplied fsgid can be trusted if it is in the list of
1975 supplementary groups returned by the group upcall.
1977 Severity : enhancement
1979 Description: Allow masking D_WARNING, D_ERROR messages from console
1980 Details : Console messages can now be disabled via lnet.printk.
1984 Description: User code with malformed file open parameter crashes client node
1985 Details : Before packing join_file req, all the related reference should be
1986 checked carefully in case some malformed flags cause fake
1987 join_file req on client.
1991 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
1992 Details : ldlm_completion_ast() assumes that a lock is granted when the req
1993 mode is equal to the granted mode. However, it should also check
1994 that LDLM_FL_CP_REQD is not set.
1998 Description: Heavy nfs access might result in deadlocks
1999 Details : After ELC code landed, it is now improper to enqueue any mds
2000 locks under och_sem, because enqueue might want to decide to
2001 cancel open locks for same inode we are holding och_sem for.
2005 Description: Client eviction while running blogbench
2006 Details : A lot of unlink operations with concurrent I/O can lead to a
2007 deadlock causing evictions. To address the problem, the number of
2008 oustanding OST_DESTROY requests is now throttled to
2009 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
2010 callbacks are processed in priority.
2014 Description: enable ACLs on MDS by default
2015 Details : ACLs must be enabled on MDS by default.
2018 Frequency : PPC/PPC64 only
2020 Description: conflicts between asm-ppc64/types.h and lustre_types.h
2021 Details : fix duplicated definitions between asm-ppc64/types.h and
2022 lustre_types.h on PPC.
2025 Frequency : PPC/PPC64 only
2027 Description: asm-ppc/segment.h does not exist
2028 Details : fix compile issue on PPC.
2032 Description: better handle error messages in extents code
2035 Frequency : RHEL4 only
2037 Description: mkfs is very slow on IA64/RHEL4
2038 Details : A performance regression has been discovered in the MPT Fusion
2039 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2040 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2041 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2043 Severity : enhancement
2045 Description: SNMP support enhancement
2046 Details : Adding total number of sampled request for an MDS node in snmp
2049 Severity : enhancement
2051 Description: Optimize ldlm waiting list processing for PR extent locks
2052 Details : When processing waiting list for read extent lock and meeting read
2053 lock that is same or wider to it that is not contended, skip
2054 processing rest of the list and immediatelly return current
2055 status of conflictness, since we are guaranteed there are no
2056 conflicting locks in the rest of the list.
2060 Description: Time out and refuse to reconnect
2061 Details : When the failover node is the primary node, it is possible
2062 to have two identical connections in imp_conn_list. We must
2063 compare not conn's pointers but NIDs, otherwise we can defeat
2064 connection throttling.
2068 Description: port llog fixes from b1_6 into HEAD
2069 Details : Port llog reference couting and some llog cleanups from b1_6
2070 (bug 10800) into HEAD, for protect from panic and access to already
2071 free llog structures.
2075 Description: Detect stride IO mode in read-ahead
2076 Details : When a client does stride read, read-ahead should detect that and
2077 read-ahead pages according to the detected stride pattern.
2081 Description: data checksumming impacts single node performance
2082 Details : add support for several checksum algorithm. Currently, only CRC32
2083 and Adler-32 are supported. The checksum type can be changed on
2084 the fly via /proc/fs/lustre/osc/*/checksum_type.
2088 Description: use adler32 for page checksums
2089 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2094 Description: build for x2 fails
2095 Details : fix compile issue on Cray systems.
2099 Description: Properly match for duplicate locks
2100 Details : Due to different lock order from skiplists code, we need to
2101 traverse entire list for now
2104 Frequency : only on PPC/SLES10
2106 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2107 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2108 be defined. Add a hack in mkfs_lustre.c to work around this compile
2113 Description: LASSERT on MDS when client holding flock lock dies
2114 Details : ldlm pool logic depends on number of granted locks equal to
2115 number of released locks which is not true for flock locks, so
2116 just exclude such locks from consideration.
2120 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2121 Details : Use fsfilt_sync() for both the whole filesystem sync and
2122 individual file sync to eliminate dangerous inode locking
2123 with I_LOCK that can lead to a deadlock.
2127 Description: performance in 1.6.3
2128 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2129 sure that 1MB requests are not fragmented by the block layer.
2131 Severity : enhancement
2133 Description: organize the server-side client stats on per-nid basis
2134 Details : Change the structure of stats under obdfilter and mds to
2142 The "uuid"s file would list the uuids of _active_ exports.
2143 And the clear entry is to clear all stats and stale nids.
2145 Severity : enhancement
2147 Description: eliminate client locks in face of contention
2148 Details : file contention detection and lockless i/o implementation
2149 for contended files.
2153 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2156 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2158 Description: MDS may lose file striping (and hence file data) in some cases
2159 Details : If there are additional extended attributes stored on the MDS,
2160 in particular ACLs, SELinux, or user attributes (if user_xattr
2161 is specified for the client mount options) then there is a risk
2162 of attribute loss. Additionally, the Lustre file striping
2163 needs to be larger than default (e.g. striped over all OSTs),
2164 and an additional attribute must be stored initially in the
2165 inode and then increase in size enough to be moved to the
2166 external attribute block (e.g. ACL growing in size) for file
2171 Description: skiplist implementation simplification
2172 Details : skiplists are used to group compatible locks on granted list
2173 that was implemented as tracking first and last lock of each
2174 lock group the patch changes that to using doubly linked lists
2178 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2179 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2180 because LASSERT on both the data supplied by a client, and the
2181 data on disk is dangerous and incorrect.
2183 Severity : enhancement
2185 Description: Slow truncate/writes to huge files at high offsets.
2186 Details : Directly associate cached pages to lock that protect those pages,
2187 this allows us to quickly find what pages to write and remove
2188 once lock callback is received.
2192 Description: more ldlm soft lockups
2193 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2194 starve other threads from the resource lock for a long time in
2195 case of long waiting queue, so change the debug level from
2196 D_OTHER to the less frequently used D_INFO.
2198 Severity : enhancement
2200 Description: add -gid, -group, -uid, -user options to lfs find
2204 Description: Hung threads in invalidate_inode_pages2_range
2205 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2206 once one is completed. As a result, some RPCs are stuck in the
2207 queue and are never sent.
2211 Description: filter threads hungs on waiting journal commit
2212 Details : Cleanup filter group llog code, then only filter group llog will
2213 be only created in the MDS/OST syncing process.
2217 Description: Procfs and llog threads access destoryed import sometimes.
2218 Details : Sync the import destoryed process with procfs and llog threads by
2219 the import refcount and semaphore.
2221 Severity : enhancement
2223 Description: openlock cache of b1_6 port to HEAD
2228 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2229 Details : If insertion of an extent fails, then discard the inode
2230 preallocation and free data blocks else it can lead to duplicate
2235 Description: don't always update ctime in ext3_xattr_set_handle()
2236 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2237 In some cases the ctime should not be updated, for example for
2238 2.0->1.8 compatibility it is necessary to delete an xattr and it
2239 should not update the ctime.
2243 Bugzilla : 15713/16362
2244 Description: Assertion in iopen_connect_dentry in 1.6.3
2245 Details : looking up an inode via iopen with the wrong generation number can
2246 populate the dcache with a disconneced dentry while the inode
2247 number is in the process of being reallocated. This causes an
2248 assertion failure in iopen since the inode's dentry list contains
2249 both a connected and disconnected dentry.
2253 Description: assertion failure in ldlm_handle2lock()
2254 Details : fix a race between class_handle_unhash() and class_handle2object()
2255 introduced in lustre 1.6.5 by bug 13622.
2260 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2261 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2266 Description: oops in sd_iostats_seq_show()
2267 Details : unloading/reloading the scsi low level driver triggers a kernel
2268 bug when trying to access the sd iostat file.
2273 Description: Kernel panics during QLogic driver reload
2274 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2275 patch, causing memory corruption.
2280 Description: journal_dev option does not work in b1_6
2281 Details : pass mount option during pre-mount.
2283 Severity : enhancement
2285 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2286 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2287 extent information of a file. It can be used to map logical blocks
2288 in a file to physical blocks in the block device.
2292 Description: LDLM soft lockups - improvement
2293 Details : It is be possible to send the lock handle along with each read
2294 or write request because the client is already doing a lock match
2295 itself so there isn't any reason the OST should have to re-do that
2299 Frequency : only on Cray X2
2301 Description: X2 build failures
2302 Details : fix build failures on Cray X2.
2306 Description: xid & resent requests
2307 Details : Initialize RPC XID from clock at startup (randomly if clock is
2310 Severity : enhancement
2312 Description: Add lustre_start utility to start or stop multiple Lustre servers
2317 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2318 Details : In case of memory pressure, list_del() can be called twice on
2319 req->rq_history_list, causing a kernel oops.
2323 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2324 Details : fix stack overflow in the distributed lock manager by defering
2325 export eviction after a failed AST to the elt thread instead of
2326 handling it in the dlm interpret routine.
2330 Description: Convert some comments to new format.
2331 Details : Update documenting comments to match doxygen conventions.
2335 Description: Grammar fixes.
2336 Details : A couple of trivial spelling fixes.
2340 Description: OSD_COUNTERS-mandatory
2341 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2342 to simplify the code.
2346 Description: simplify cmm_device freeing logic.
2347 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2351 Description: Add lockdep support to dt_object_operations locking interface.
2352 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2353 parameter indicating lock ordering. Update mdd code to use new
2358 Description: Introduce failloc constants for lockless IO tests.
2359 Details : Add two new failloc constants to test lockless IO. Only one of
2360 them in implemented---another is checked in yet to be landed
2365 Description: Add lockdep support for inode mutex.
2366 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2367 in the situations where Lustre has to lock more than one inode
2372 Description: Add optional invariants checking support.
2373 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2374 configure switch. This macro is to be used for consistency and
2375 sanity checks that are too expensive to be left in `production'
2380 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2381 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2386 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2387 Details : Use spin_lock_nested() in (the only) situation where more than
2388 one ldlm_lock is locked simultaneously. Also, fix possible
2389 dead-lock in ldlm_lock_change_resource() by enforcing particular
2394 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2395 Details : Instead of specifying each ldlm_lock call-back through separate
2396 parameter, wrap them into struct ldlm_callback_suite.
2400 Description: Kill join_lru obd method and its callers.
2401 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2402 in memory---a requirement implemented through ->o_join_lru() obd
2403 method in HEAD. Remove this method and its users.
2407 Description: Add asynchronous ldlm ENQUEUE completion handler.
2408 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2409 case that stock ldlm_completion_ast() cannot handle as it waits
2410 until lock is granted. Introduce new ldlm_completion_ast_async()
2411 for this. Also comment ldlm_completion_ast().
2415 Description: ldlm_error <-> errno conversion.
2416 Details : Add functions to map (rather arbitrary) between LDLM error codes
2417 and standard errno values. CLIO needs this to prevent LDLM specific
2418 constants from escaping ldlm and osc.
2422 Description: Kill unused ldlm_handle2lock_ns() function.
2423 Details : Kill unused ldlm_handle2lock_ns() function.
2427 Description: Add lu_ref support to ldlm_lock
2428 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2429 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2430 and ldlm_resource. LDLM interface has to be changed, because code that
2431 releases a reference on a lock, has to "know" what reference this is.
2432 In the most frequent case
2434 lock = ldlm_handle2lock(handle);
2436 LDLM_LOCK_PUT(lock);
2438 no changes are required. When any other reference (received _not_ from
2439 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2440 instead of LDLM_LOCK_PUT().
2442 Arguably, changes are pervasive, and interface requires some discipline
2443 for proper use. On the other hand, it was very instrumental in finding
2444 a few leaked lock references.
2448 Description: Add ldlm_lock_addref_try().
2449 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2450 attempts to addref a lock that might be being canceled
2455 Description: Add ldlm_weigh_callback().
2456 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2457 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2458 hard-coded `number of pages' logic.
2462 Description: Add lockdep annotations to llog code.
2463 Details : Use appropriately tagged _nested() locking calls in the places
2464 where llog takes more than one ->lgh_lock lock.
2468 Description: Add loi_kms_set().
2469 Details : Wrap kms updates into a helper function.
2473 Description: Constify instances of struct lsm_operations.
2474 Details : Constify instances of struct lsm_operations.
2478 Description: lu_conf support.
2479 Details : On a server, a file system object is uniquely identified
2480 by a fid, which is sufficient to locate and load all object
2481 state (inode). On a client, on the other hand, more data are
2482 necessary instantiate an object. Change lu_object_find() and
2483 friends to take additional `lu_conf' argument describing object.
2484 Typically this includes layout information.
2488 Description: lu_context fixes.
2489 Details : Introduce new lu_context functions that are needed on the client
2490 side, where some system threads (ptlrpcd) are shared by multiple
2491 modules, and so cannot be stopped during module shutdown.
2495 Description: Add start and stop methods to lu_device_type_operations.
2496 Details : Introduce two new methods in lu_device_type_operations, that are
2497 invoked when first instance of a given type is created and last one
2498 is destroyed respectively. This is need by CLIO.
2502 Description: Add lu_ref support to struct lu_device.
2503 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2504 track leaked references.
2508 Description: Introduce lu_kmem_descr.
2509 Details : lu_kmem_descr and its companion interface allow to create
2510 and destroy a number of kmem caches at once.
2514 Description: Fix lu_object finalization race.
2515 Details : Fix a race between lu_object_find() finding an object and its
2516 concurrent finalization. This race is (most likely) not possible
2517 on the server, but might happen on the client.
2521 Description: Introduce lu_ref interface.
2522 Details : lu_ref is a debugging module allowing to track references to
2523 a given object. It is quite cpu expensive, and has to be
2524 explicitly enabled with --enable-lu_ref. See usage description
2529 Description: Factor lu_site procfs stats into a separate function.
2530 Details : Separate lu_site stats printing code into a separate function
2531 that can be reused on a client.
2535 Description: Constify instances of struct {lu,dt,md}_device_operations.
2536 Details : Constify instances of struct {lu,dt,md}_device_operations.
2540 Description: Introduce struct md_site and move meta-data specific parts of
2541 struct lu_site here.
2542 Details : Move md-specific fields out of struct lu_site into special struct
2543 md_site, so that lu_site can be used on a client.
2547 Description: Kill mdd_lov_destroy().
2548 Details : Remove unused mdd code.
2552 Description: Add st_block checking to multistat.c.
2553 Details : Add st_block checking to multistat.c.
2557 Description: Add lu_ref support to struct obd_device.
2558 Details : Add lu_ref tracking to obd_device.
2562 Description: Kill obd_set_fail_loc().
2563 Details : Remove unused code.
2567 Description: Add special type for ptlrpc_request interpret functions.
2568 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2569 there. Actual usage will be in CLIO.
2573 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2574 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2575 doesn't work with lockdep.
2579 Description: Add rwv.c test program.
2580 Details : New testing program exercising readv(2) and writev(2) (Qian).
2584 Description: Add sendfile.c test program.
2585 Details : New testing program exercising sendfile(2) (Jay).
2589 Description: Ratelimit a message that can be very frequent.
2590 Details : Ratelimit a memory allocation failure message that can
2595 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2596 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2600 Description: Liblustre build fixes.
2601 Details : Liblustre build fixes.
2605 Description: libcfs: add cfs_{need,cond}_resched() interface.
2606 Details : libcfs: add cfs_{need,cond}_resched() definition and
2607 implementations for Linux, NT, and liblustre.
2609 Severity : enhancement
2611 Description: More exported tunables for mballoc
2612 Details : Add support for tunable preallocation window and new tunables for
2613 large/small requests
2617 Description: Detect corruption of block bitmap and checking for preallocations
2618 Details : Checks validity of on-disk block bitmap. Also it does better
2619 checking of number of applied preallocations. When corruption is
2620 found, it turns filesystem readonly to prevent further corruptions.
2624 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2625 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2626 window to 0. If it does hit cache miss, and read-pattern is still
2627 stride-io mode, does not reset the stride window, but also does not
2628 increase the stride window length in this case.
2632 Frequency : only for big-endian servers
2633 Description: Check if system is big-endian while mounting fs with extents feature
2634 Details : Mounting a filesystem with extents feature will fail on big-endian
2635 systems since ext3-based ldiskfs is not supported on big-endian
2636 systems. This can be over-riden with "bigendian_extents" mount option.
2638 Severity : enhancement
2640 Description: The root squash functionality
2641 Details : A security feature, which is to prevent users from being able
2642 to mount lustre on their desktop, run as root, and delete
2643 all of the files in the filesystem. The goal is accomplished by
2644 remapping user id (UID) and group id (GID) of the root user to
2645 a UID and GID specified by the system administartor via Lustre
2646 configuration management server (MGS). The functionality also
2647 allows to specify sets of clients for which the remapping does
2652 Description: Excessive recovery window
2653 Details : With AT enabled, the recovery window can be excessively long (6000+
2654 seconds). To address this problem, we no longer use
2655 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2656 timeout no longer depends on the service time, it is set to
2657 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2658 time via pb_service_time.
2662 Description: Watchdog triggered on MDS failover
2663 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2664 the OSTs know that the MDS "UUID" can be reused for the same export
2665 from a different NID, so we do not need to wait for the export to be
2669 Frequency : rare, only if using MMP with Linux RAID
2671 Description: MMP doesn't work with Linux RAID
2672 Details : While using HA for Lustre servers with Linux RAID, it is possible
2673 that MMP will not detect multiple mounts. To make this work we
2674 need to unplug the device queue in RAID when the MMP block is being
2675 written. Also while reading the MMP block, we should read it from
2676 disk and not the cached one.
2678 Severity : enhancement
2680 Description: open file using fid
2681 Details : A file can be opened using just its fid, like
2682 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2685 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2688 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2689 Details : add proper locking for creation of jbd_4k slab cache
2693 Description: MMP check in ext3_remount() fails without displaying any error
2694 Details : When multiple mount protection fails during remount, proper error
2697 Severity : enhancement
2699 Description: Allow stripe size to be up to 4G-64k
2700 Details : Fix math logic to allow large stripe sizes.
2704 Description: add check for >8TB ldiskfs filesystems
2705 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2706 Don't allow >8TB ldiskfs filesystems to be mounted without
2707 force_over_8tb mount option
2712 Descriptoin: OSS complains "too many blocks" and crashes
2713 Details : In filter_commitrw_write():
2714 1. lquota_chkquota();
2715 2. obdo_from_inode();
2716 3. lquota_pending_commit();
2717 "2." has changed uid and gid in this case, then caused
2718 lquota_chkquota() and lquota_pending_commit() to use
2719 different uid and gid. That is the root of the bug.
2723 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2724 Details : Detect and print out the 'stripe count = -1' case properly.
2728 Description: Out or order replies might be lost on replay
2729 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2730 request with tid smaller than one currently being added, add it
2731 to the start, not end of the list.
2733 --------------------------------------------------------------------------------
2735 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2737 * Support for kernels:
2738 2.6.5-7.283 (SLES 9),
2739 2.6.9-55.EL (RHEL 4),
2740 2.6.16.46-0.14 (SLES 10),
2741 2.6.18.8 vanilla (kernel.org)
2742 * Client support for unpatched kernels:
2743 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2744 2.6.16 - 2.6.22 vanilla (kernel.org)
2745 * Due to recently discovered recovery problems, we do not recommend
2746 using patchless RHEL 4 clients with this or any earlier release.
2747 * Recommended e2fsprogs version: 1.39.cfs8
2748 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2749 * Starting with this release, the ldiskfs backing filesystem required
2750 by Lustre is now in its own package, lustre-ldiskfs. This package
2751 should be installed. It is versioned separately from Lustre and
2752 may be released separately in future.
2756 Description: block reactivating mgc import until all deactivates complete
2757 Details : Fix race when failing back MDT/MGS to itself (testing)
2760 Frequency : at statup only
2762 Description: mds_lov_synchronize race leads to various problems
2763 Details : simultaneous MDT->OST connections at startup can cause the
2764 sync to abort, leaving the OSC in a bad state.
2766 Severity : enhancement
2768 Description: add optional extra BUILD_VERSION info
2769 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2770 to override the lustre version.
2773 Frequency : 2.6.18 servers only
2775 Description: ll_kern_mount() doesn't release the module reference
2776 Details : The ldiskfs module reference count never drops down to 0
2777 because ll_kern_mount() doesn't release the module reference.
2782 Description: server LBUG when using old ost_num_threads parameter
2783 Details : Accept the old ost_num_threads parameter but warn that it
2784 is deprecated, and fix an off-by-one error that caused an LBUG.
2789 Description: Transient SCSI error results in persistent IO issue
2790 Details : iobuf->dr_error is not reinitialized to 0 between two
2794 Frequency : sometimes when underlying device returns I/O errors
2796 Description: OSTs not going read-only during write failures
2797 Details : OSTs are not remounted read-only when the journal commit threads
2798 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2799 instead of the ext3 wrappers.
2803 Description: poor connect scaling with increasing client count
2804 Details : Don't run filter_grant_sanity_check for more than 100 exports
2805 to improve scaling for large numbers of clients.
2808 Frequency : SLES10 only
2810 Description: sanity-quota.sh quotacheck failed: rc = -22
2811 Details : Quotas cannot be enabled on SLES10.
2814 Frequency : liblustre clients only
2816 Description: getdirentries does not give error when run on compute nodes
2817 Details : getdirentries does not fail when the size specified as an argument
2818 is too small to contain at least one entry
2820 Severity : enhancement
2822 Description: Add LNET router traceability for debug purposes
2823 Details : If a checksum failure occurs with a router as part of the
2824 IO path, the NID of the last router that forwarded the bulk data
2825 is printed so it can be identified.
2830 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2831 Details : Due to a race condition, liblustre clients were occasionally
2832 evicted incorrectly.
2834 Severity : enhancement
2836 Description: lfs setstripe use optional parameters instead of postional
2839 Severity : enhancement
2841 Description: Nanosecond timestamp support for ldiskfs
2842 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2843 resolution timestamps. There is not yet support for this at
2844 the Lustre filesystem level.
2847 Frequency : during server recovery
2849 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2850 Details : request with rq_no_resend flag not awake l_wait_event if they get
2854 Frequency : nfs export on patchless client
2856 Description: connectathon hang when test nfs export over patchless client
2857 Details : Disconnected dentry cannot be found with lookup, so we do not need
2858 to unhash it or make it invalid
2861 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2862 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2863 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2868 Description: open req refcounting wrong on reconnect
2869 Details : If reconnect happened between getting open reply from server and
2870 call to mdc_set_replay_data in ll_file_open, we will schedule
2871 replay for unreferenced request that we are about to free.
2872 Subsequent close will crash in variety of ways.
2873 Check that request is still eligible for replay in
2874 mdc_set_replay_data().
2879 Description: disable writes to filesystem when reading health_check file
2880 Details : the default for reading the health_check proc file has changed
2881 to NOT do a journal transaction and write to disk, because this
2882 can cause reads of the /proc file to hang and block HA state
2883 checking on a healthy but otherwise heavily loaded system. It
2884 is possible to return to the previous behaviour during configure
2885 with --enable-health-write.
2887 Severity : enhancement
2889 Description: 64-bit inode version
2890 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2891 to the inode. This will be required for version-based recovery.
2896 Description: MDS fails to start if a duplicate client export is detected
2897 Details : in some rare cases it was possible for a client to connect to
2898 an MDS multiple times. Upon recovery the MDS would detect this
2899 and fail during startup. Handle this more gracefully.
2901 Severity : enhancement
2903 Description: Add -o localflock option to simulate old noflock
2905 Details : This will achieve local-only flock/fcntl locks
2911 Description: log_commit_thread vs filter_destroy race leads to crash
2912 Details : Take import reference before releasing llog record semaphore
2917 Description: Wrong request locking in request set processing
2918 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2919 imp_delayed_list, in this place should be used imp_lock.
2922 Frequency : when reconnection
2924 Description: Grant Leak when osc reconnect to OST
2925 Details : When osc reconnect ost, OST(filter) should check whether it
2926 should grant more space to client by comparing fed_grant and
2927 cl_avail_grant, and return the granted space to client instead
2928 of "new granted" space, because client will call osc_init_grant
2929 to update the client grant space info.
2932 Frequency : when client reconnect to OST
2934 Description: Grant Leak when osc do resend and replay bulk write
2935 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2936 bulk write request, because the grant info while be sync between
2937 OSC and OST when reconnect, and we should ignore the grant info
2938 these of resend/replay write req.
2943 Description: Grant space more than available left space sometimes.
2944 Details : When then OST is about to be full, if two bulk writing from
2945 different clients came to OST. Accord the avaliable space of the
2946 OST, the first req should be permitted, and the second one
2947 should be denied by ENOSPC. But if the seconde arrived before
2948 the first one is commited. The OST might wrongly permit second
2949 writing, which will cause grant space > available space.
2952 Frequency : when client is evicted
2954 Description: Grant might be wrongly erased when osc is evicted by OST
2955 Details : when the import is evicted by server, it will fork another
2956 thread ptlrpc_invalidate_import_thread to invalidate the
2957 import, where the grant will be set to 0. While the original
2958 thread will update the grant it got when connecting. So if
2959 the former happened latter, the grant will be wrongly errased
2960 because of this race.
2965 Description: Checking Stale with correct fid
2966 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
2967 to check whether it is stale, because sometimes, we want the
2968 enqueue happened anyway, and op_data.fid2 will not be initialized.
2970 Severity : enhancement
2972 Description: update patchless client
2973 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
2976 Frequency : only with 2.4 kernel
2978 Description: random memory corruption
2979 Details : size of struct ll_inode_info is to big for union inode.u and this
2980 can be cause of random memory corruption.
2985 Description: Memory leak in recovery
2986 Details : Lov_mds_md was not free in an error handler in mds_create_object.
2987 It should also check obd_fail before fsfilt_start, otherwise if
2988 fsfilt_start return -EROFS,(failover mds during mds recovery).
2989 then the req will return with repmsg->transno = 0 and rc = EROFS.
2990 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
2991 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
2992 be freed no matter whether fsfilt_commit success or not.
2995 Frequency : only with huge count clients
2997 Description: Prevents from taking the superblock lock in llap_from_page for
2999 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
3000 for llap_from_page call in ll_removepage prevents from taking the
3001 superblock lock for a soon died page.
3006 Description: Not check open intent error before release open handle
3007 Details : in some rare cases, the open intent error is not checked before
3008 release open handle, which may cause
3009 ASSERTION(open_req->rq_transno != 0), because it tries to release
3010 the failed open handle.
3015 Description: Set cat log bitmap only after create log success.
3016 Details : in some rare cases, the cat log bitmap is set too early. and it
3017 should be set only after create log success.
3021 Description: Accessing a block bevice can re-enable I/O when Lustre is
3022 tearing down a device.
3023 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3028 Description: service threads may hog cpus when there are a lot of requests
3029 Details : Insert cond_resched to give other threads a chance to use some CPU
3034 Description: the cat log was not initialized in recovery
3035 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3036 unlink log on mds will not be initialized until mds post
3037 recovery. And also in mds post recovery, the unlink log will
3038 initialization will be done asynchronausly, so there will be race
3039 between add unlink log and unlink log initialization.
3043 Description: brw_stats were being printed incorrectly
3044 Details : brw_stats were being printed as log2 but all of them were not
3045 recorded as log2. Also remove some code duplication arising from
3046 filter_tally_{read,write}.
3050 Frequency : rare, only in recovery.
3051 Description: ASSERTION(req->rq_type != LI_POISON) failed
3052 Details : imp_lock should be held while iterating over imp_sending_list for
3053 prevent destroy request after get timeout in ptlrpc_queue_wait.
3057 Description: replay-single.sh test 52 fails
3058 Details : A lock's skiplist need to be cleanup when it being unlinked
3059 from its resource list.
3063 Description: Short directio read returns full requested size rather than
3065 Details : Direct I/O operations should return actual amount of bytes
3066 transferred rather than requested size.
3068 Severity : enhancement
3070 Description: metadata RPC reduction (e.g. for rm performance)
3071 Details : decrease the amount of synchronous RPC between clients and servers
3072 by canceling conflicing lock before the operation on the client
3073 and packing thier handles into the main operation RPC to server.
3075 Severity : enhancement
3077 Description: Async OSC create to avoid the blocking unnecessarily.
3078 Details : If an OST has no remaining object, system will block on the
3079 creation when it needs to create a new object on this OST. Now,
3080 ways use pre-created objects when available, instead of blocking on
3081 an empty osc while others are not empty. If we must block, we
3082 block for the shortest possible period of time.
3086 Description: improve handling recoverable errors
3087 Details : if request processig with error which can be recoverable on server
3088 request should be resend, otherwise page released from cache and
3091 Severity : enhancement
3093 Description: refine locking for avoid write wrong info into lov_objid file
3094 Details : fix possible races with add new target and write/update data in
3097 --------------------------------------------------------------------------------
3099 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3104 Frequency : on some architectures
3106 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3107 Details : Uninitialized flags sometimes cause configuration commands to
3111 Frequency : patchless clients only
3113 Description: missing __iget() symbol export
3114 Details : The __iget() symbol export is missing. To avoid the need for
3115 this on patchless clients the deathrow inode reaper is turned
3116 off, and we depend on the VM to clean up old inodes. This
3117 dependency was during via the fix for bug 12181.
3119 --------------------------------------------------------------------------------
3121 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3123 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3124 INTEROPERATE with older versions automatically. In many cases a
3125 special upgrade step is needed. Please read the
3126 user documentation before upgrading any part of a live system.
3127 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3128 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3129 * WARNING: Lustre configuration and startup changes are required with
3130 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3134 Severity : enhancement
3136 Description: MountConf
3137 Details : Lustre configuration is now managed via mkfs and mount
3138 commands instead of lmc and lconf. New obd types (MGS, MGC)
3139 are added for dynamic configuration management. See
3140 https://mail.clusterfs.com/wikis/lustre/MountConf for
3143 Severity : enhancement
3145 Description: dynamic OST addition
3146 Details : OSTs can now be added to a live filesystem
3148 Severity : enhancement
3150 Description: startup order invariance
3151 Details : MDTs and OSTs can be started in any order. Clients only
3152 require the MDT to complete startup.
3154 Severity : enhancement
3156 Description: parallel, asynchronous orphan cleanup
3157 Details : orphan cleanup is now performed in separate threads for each
3158 OST, allowing parallel non-blocking operation.
3160 Severity : enhancement
3162 Description: optimized stripe assignment
3163 Details : stripe assignments are now made based on ost space available,
3164 ost previous usage, and OSS previous usage, in order to try
3165 to optimize storage space and networking resources.
3167 Severity : enhancement
3169 Description: Permanently set tunables
3170 Details : All writable /proc/fs/lustre tunables can now be permanently
3171 set on a per-server basis, at mkfs time or on a live system.
3173 Severity : enhancement
3175 Description: Lustre message v2
3176 Details : Add lustre message format v2.
3178 Severity : enhancement
3180 Description: client OST exclusion list
3181 Details : Clients can be started with a list of OSTs that should be
3182 declared "inactive" for known non-responsive OSTs.
3186 Description: SPEC SFS validation failure on NFS v2 over lustre.
3187 Details : Changes the blocksize for regular files to be 2x RPC size,
3188 and not depend on stripe size.
3190 Severity : enhancement
3192 Description: Multiple MD RPCs in flight.
3193 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3194 To avoid overly-overloading MDS, introduce a limit on number of
3195 MDS RPCs in flight for a single client and add /proc controls
3196 to adjust this limit.
3198 Severity : enhancement
3200 Description: client read/write statistics
3201 Details : Add client read/write call usage stats for performance
3202 analysis of user processes.
3203 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3204 file access. extents_stats shows chunk size distribution.
3205 extents_stats_per_process show chunk size distribution per
3208 Severity : enhancement
3210 Description: mds statistics
3211 Details : Add detailed mds operations statistics in
3212 /proc/fs/lustre/mds/*/stats.
3216 Description: Failure of copying files with lustre special EAs.
3217 Details : Client side always return success for setxattr call for lustre
3218 special xattr (currently only "trusted.lov").
3223 Description: Refcount LNET uuids
3224 Details : The global LNET uuid list grew linearly with every startup;
3225 refcount repeated list entries instead of always adding to
3228 Severity : enhancement
3230 Description: Dynamic service threads
3231 Details : Within a small range, start extra service threads
3232 automatically when the request queue builds up.
3235 Frequency : mixed-endian client/server environments
3237 Description: mixed-endian crashes
3238 Details : The new msg_v2 system had some failures in mixed-endian
3241 Severity : enhancement
3243 Description: Easy OST removal
3244 Details : OSTs can be permanently deactivated with e.g. 'lctl
3245 conf_param lustre-OST0001.osc.active=0'
3247 Severity : enhancement
3249 Description: MGS proc entries
3250 Details : Added basic proc entries for the MGS showing what filesystems
3253 Severity : enhancement
3255 Description: provide MGS failover
3256 Details : Added config lock reacquisition after MGS server failover.
3258 Severity : enhancement
3260 Description: add Linux 2.4 support
3261 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3265 Description: a large application tries to do I/O to the same resource and dies
3266 in the middle of it.
3267 Details : Check the req->rq_arrival time after the call to
3268 ost_brw_lock_get(), but before we do anything about
3269 processing it & sending the BULK transfer request. This
3270 should help move old stale pending locks off the queue as
3271 quickly as obd_timeout.
3274 Frequency : when an incorrect nid is specified during startup
3276 Description: ptlrpc connect to non-existant node causes kernel crash
3277 Details : LNET can't be re-entered from an event callback, which
3278 happened when we expire a message after the export has been
3279 cleaned up. Instead, hand the zombie cleanup off to another
3282 Severity : enhancement
3284 Description: plain/inodebits lock performance improvement
3285 Details : Grouping plain/inodebits in granted list by their request modes
3286 and bits policy, thus improving the performance of search through
3290 Frequency : only if OST filesystem is corrupted
3292 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3293 Details : for a short time RPCs with bulk IO are in the replay list,
3294 but replay of bulk IOs is unimplemented. If the OST filesystem
3295 is corrupted due to disk cache incoherency and then replay is
3296 started it is possible to trip an assertion. Avoid putting
3297 committed RPCs into the replay list at all to avoid this issue.
3300 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3302 Description: System hang on startup
3303 Details : This bug allowed the liblustre (e.g. catamount) client to
3304 return to the app before handling all startup RPCs. This
3305 could leave the node unresponsive to lustre network traffic
3306 and manifested as a server ptllnd timeout.
3308 Severity : enhancement
3310 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3311 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3312 boolean to control whether to print peer debug info when a
3313 client's RPC times out.
3316 Frequency : only for kernels with patches from Lustre below 1.4.3
3318 Description: Remove old rdonly API
3319 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3322 Frequency : only for devices with external journals
3324 Description: Set external device read-only also
3325 Details : During a commanded failover stop, we set the disk device
3326 read-only while the server shuts down. We now also set any
3327 external journal device read-only at the same time.
3330 Frequency : when upgrading from 1.4 while trying to change parameters
3332 Description: The wrong (new) MDC name was used when setting parameters for
3333 upgraded MDT's. Also allows changing of OSC (and MDC)
3334 parameters if --writeconf is specified at tunefs upgrade time.
3337 Frequency : when setting specific ost indicies
3339 Description: QOS code breaks on skipped indicies
3340 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3341 created with --index need not be sequential.
3343 Severity : enhancement
3345 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3346 Details : The uninit_groups feature works in conjunction with the kernel
3347 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3348 up the pass1 processing of e2fsck. This is a read-only feature
3349 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3350 mount filesystems that have had this feature enabled.
3352 Severity : enhancement
3354 Description: Improve multi-block allocation algorithm to avoid fragmentation
3355 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3356 allocation locality and avoid filesystem fragmentation.
3358 ------------------------------------------------------------------------------
3360 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3362 * Support for kernels:
3363 2.4.21-47.0.1.EL (RHEL 3)
3364 2.6.5-7.283 (SLES 9)
3365 2.6.9-42.0.10.EL (RHEL 4)
3366 2.6.12.6 vanilla (kernel.org)
3367 2.6.16.27-0.9 (SLES 10)
3368 * Recommended e2fsprogs version: 1.39.cfs5
3370 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3374 Frequency : occasional, depends on client load and configuration
3375 Bugzilla : 12181, 12203
3376 Description: data loss for recently-modified files
3378 Details : In some cases it is possible that recently written or created
3379 files may not be written to disk in a timely manner (this should
3380 normally be within 30s unless client IO load is very high).
3381 The problem appears as zero-length files or files that are a
3382 multiple of 1MB in size after a client crash or client eviction
3383 that are missing data at the end of the file.
3385 This problem is more likely to be hit on clients where files are
3386 repeatedly created and unlinked in the same directory, clients
3387 have a large amount of RAM, have many CPUs, the filesystem has
3388 many OSTs, the clients are rebooted frequently, and/or the files
3389 are not accessed by other nodes after being written.
3391 The presence of the problem can be detected by looking at
3392 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3393 smaller than the second (nr_unused) then dirty files will not
3394 be flushed automatically to disk. "sync; sleep 10" should be
3395 run several times on the node before unmounting it to update
3396 Lustre (this is also safe to run on nodes without this problem).
3398 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3399 that can cause this same problem, so customers using that kernel
3400 also need to update the kernel in addition to Lustre. In order
3401 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3403 It is normal that files written just before a client crash (less
3404 than 30s) may not yet have been flushed to disk, even for local
3408 Frequency : frequent on thin XT3 nodes
3410 Description: UUID collision on thin XT3 Linux nodes
3411 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3412 randomly, since we relied on an insufficiently-seeded PRNG.
3417 Description: OSS hangs after "All ost request buffers busy"
3418 Details : A deadlock between quota and journal operations caused OSS
3419 hangs after printing "All ost request buffers busy."
3422 Frequency : always on liblustre builds
3424 Description: Cleanup compiler warnings on liblustre
3427 Frequency : always on liblustre builds on XT3
3429 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3433 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3434 > 32000 subdirectories
3435 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3436 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3437 subdirectory count crosses 32000. This will aid e2fsck to
3438 correctly handle more than 32000 subdirectories.
3441 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3443 Description: System hang on startup
3444 Details : This bug allowed the liblustre (e.g. catamount) client to
3445 return to the app before handling all startup RPCs. This
3446 could leave the node unresponsive to lustre network traffic
3447 and manifested as a server ptllnd timeout.
3449 Severity : enhancement
3451 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3452 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3453 boolean to control whether to print peer debug info when a
3454 client's RPC times out.
3459 Description: make O_SYNC working on 2.6 kernels
3460 Details : 2.6 kernels use different method for mark pages for write,
3461 so need add a code to lustre for O_SYNC work.
3466 Description: Failure to close file and release space on NFS
3467 Details : Put inode details into lock acquired in ll_intent_file_open.
3468 Use mdc_intent_lock in ll_intent_open to properly
3469 detect all kind of errors unhandled by mdc_enqueue.
3474 Description: proc file read during shutdown sometimes raced obd removal,
3476 Details : Add lock to prevent obd access after proc file removal.
3479 Frequency : Only for files larger than 4GB on 32-bit clients.
3481 Description: improperly doing page alignment of locks
3482 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3483 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3488 Description: RPCs being resent when they shouldn't be
3489 Details : Some RPCs that should not be resent are being resent. This
3490 can cause inconsistencies in the RPC state machine. Do not
3491 resend such requests.
3494 Frequency : rare, only with NFS export
3496 Description: Crash on NFS re-export node
3497 Details : under very unusual load conditions an assertion is hit in
3498 ll_intent_file_open()
3501 Frequency : only if OST filesystem is corrupted
3503 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3504 Details : for a short time RPCs with bulk IO are in the replay list,
3505 but replay of bulk IOs is unimplemented. If the OST filesystem
3506 is corrupted due to disk cache incoherency and then replay is
3507 started it is possible to trip an assertion. Avoid putting
3508 committed RPCs into the replay list at all to avoid this issue.
3513 Description: large O_DIRECT requests fail under memory pressure/fragmentation
3514 Details : Large single O_DIRECT read and write calls can fail to allocate
3515 a sufficiently large buffer to process the request. In case of
3516 allocation failure the allocation is retried with a smaller
3517 buffer and broken into smaller requests.
3519 Severity : enhancement
3521 Description: Add -o localflock option to simulate old noflock behaviour.
3522 Details : This will achieve local-only flock/fcntl locks coherentness.
3527 Description: versioning check is incomplete
3528 Details : Checking the version difference of client vs. server, report
3529 error if the gap is too big.
3534 Description: add support PG_writeback bit
3535 Details : add support for PG_writeback bit for Lustre, for more carefull
3536 work with page cache in 2.6 kernel. This also fix some deadlocks
3537 and remove hack for work O_SYNC with 2.6 kernel.
3539 Severity : enhancement
3541 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3542 Details : The uninit_groups feature works in conjunction with the kernel
3543 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3544 up the pass1 processing of e2fsck. This is a read-only feature
3545 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3546 mount filesystems that have had this feature enabled.
3548 Severity : enhancement
3550 Description: Improve multi-block allocation algorithm to avoid fragmentation
3551 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3552 allocation locality and avoid filesystem fragmentation.
3554 ------------------------------------------------------------------------------
3556 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
git://git.whamcloud.com / fs / lustre-release.git / blob