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 2.6.32-504.30.3.el6 (RHEL6.6)
8 2.6.32-573.7.1.el6 (RHEL6.7)
9 3.10.0-229.14.1.el7 (RHEL7.1)
10 3.0.101-0.47.55 (SLES11 SP3)
11 * Client known to build on unpatched kernels:
12 2.6.32-431.29.2.el6 (RHEL6.5)
13 2.6.32-504.30.3.el6 (RHEL6.6)
14 2.6.32-573.7.1.el6 (RHEL6.7)
15 3.10.0-229.14.1.el7 (RHEL7.1)
16 3.0.101-0.47.55 (SLES11 SP3)
18 * Recommended e2fsprogs version: 1.42.13.wc3 or newer
19 * Recommended ZFS / SPL version: 0.6.5.2
20 * Tested with ZFS / SPL version: 0.6.5.2
21 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
22 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
23 stack overflow. For more information, please refer to bugzilla 17630.
24 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
25 the re-exporting nodes to be mounted with "32bitapi" mount option
27 --------------------------------------------------------------------------------
29 03-10-2015 Intel Corporation
31 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
32 for currently supported client and server kernel versions.
33 * Server known to build on patched kernels:
34 2.6.32-431.29.2.el6 (RHEL6.5)
35 2.6.32-504.8.1.el6 (RHEL6.6)
36 3.0.101-0.46 (SLES11 SP3)
37 * Client known to build on unpatched kernels:
38 2.6.32-431.29.2.el6 (RHEL6.5)
39 2.6.32-504.8.1.el6 (RHEL6.6)
40 3.10.0-123.20.1.el7 (RHEL7)
41 3.0.101-0.46 (SLES11 SP3)
42 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
43 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
44 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
45 stack overflow. For more information, please refer to bugzilla 17630.
46 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
47 the re-exporting nodes to be mounted with "32bitapi" mount option
49 Severity : enhancement
51 Description: control OST-index in IDIF via ROCOMPAT flag.
52 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
53 last_rcvd file. For new formatted OST device, it will be auto set;
54 for the case of upgrading from old OST device, you can enable it
55 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
56 enabled, for new created OST-object, its IDIF-in-LMA will contain
57 the OST-index; for the existing OST-object, the OSD will convert
58 old format IDIF as new format IDIF with OST-index stored in the
59 LMA EA when accessing such OST-object or via OI scrub. Once such
60 flag is enabled, it cannot be reverted back, so the system cannot
61 be downgraded to the orignal incompatible version.
63 --------------------------------------------------------------------------------
65 07-30-2014 Intel Corporation
67 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
68 for currently supported client and server kernel versions.
69 * Server known to build on patched kernels:
70 2.6.32-431.20.3.el6 (RHEL6.5)
71 3.0.101-0.31 (SLES11 SP3)
72 * Client known to build on unpatched kernels:
73 2.6.32-431.20.3.el6 (RHEL6.5)
74 3.0.101-0.31 (SLES11 SP3)
77 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
78 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
79 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
80 stack overflow. For more information, please refer to bugzilla 17630.
81 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
82 the re-exporting nodes to be mounted with "32bitapi" mount option
84 --------------------------------------------------------------------------------
86 10-31-2013 Intel Corporation
88 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
89 * Server builds for kernels:
90 2.6.32-358.18.1.el6 (RHEL6.4)
91 * Client builds for unpatched kernels:
92 2.6.32-358.18.1.el6 (RHEL6.4)
93 3.0.92-0.8 (SLES11 SP3)
95 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
96 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
97 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
98 stack overflow. For more information, please refer to bugzilla 17630.
99 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
100 the re-exporting nodes to be mounted with "32bitapi" mount option
102 --------------------------------------------------------------------------------
104 05-30-2013 Intel Corporation
106 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
107 * Server builds for kernels:
108 2.6.32-358.6.2.el6 (RHEL6.4)
109 * Client builds for unpatched kernels:
110 2.6.32-358.6.2.el6 (RHEL6.4)
111 3.0.74-0.6.6 (SLES11 SP2)
113 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
114 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
115 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
116 stack overflow. For more information, please refer to bugzilla 17630.
117 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
118 the re-exporting nodes to be mounted with "32bitapi" mount option
120 --------------------------------------------------------------------------------
122 9-30-2012 Whamcloud, Inc.
124 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
125 * Server support for kernels:
126 2.6.32-279.5.1.el6 (RHEL6)
127 * Client support for unpatched kernels:
128 2.6.32-279.5.1.el6 (RHEL6)
130 2.6.18-238.19.1.el5 (RHEL5)
131 2.6.16.60-0.69.1 (SLES10)
132 * Recommended e2fsprogs version: 1.41.90.wc4
133 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
134 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
135 stack overflow. For more information, please refer to bugzilla 17630.
136 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
137 the re-exporting nodes to be mounted with "32bitapi" mount option
139 Severity : enhancement
141 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
143 Severity : enhancement
145 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
147 Severity : enhancement
149 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
151 Severity : enhancement
153 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
155 Severity : enhancement
157 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
159 --------------------------------------------------------------------------------
161 04-30-2012 Whamcloud, Inc.
163 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
164 * Server support for kernels:
165 2.6.32-220.4.2.el6 (RHEL6)
166 * Client support for unpatched kernels:
167 2.6.32-220.4.2.el6 (RHEL6)
169 2.6.18-238.19.1.el5 (RHEL5)
170 2.6.16.60-0.69.1 (SLES10)
171 * Recommended e2fsprogs version: 1.41.90.wc4
172 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
173 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
174 stack overflow. For more information, please refer to bugzilla 17630.
175 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
176 the re-exporting nodes to be mounted with "32bitapi" mount option
178 Severity : enhancement
180 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
182 Severity : enhancement
184 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
186 Severity : enhancement
188 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
190 Severity : enhancement
192 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
194 --------------------------------------------------------------------------------
196 09-30-2011 Whamcloud, Inc.
198 * Server support for kernels:
199 2.6.18-238.19.1.el5 (RHEL5)
200 2.6.32-131.6.1.el6 (RHEL6)
201 * Client support for unpatched kernels:
202 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
203 2.6.18-238.19.1.el5 (RHEL5)
204 2.6.32-131.6.1.el6 (RHEL6)
205 2.6.29.4-167.fc11 (FC11)
206 2.6.16.60-0.69.1 (SLES10)
208 * Recommended e2fsprogs version: 1.41.90.wc3
209 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
210 Lustre filesystem with 4K stack may cause a stack overflow. For more
211 information, please refer to bugzilla 17630.
212 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
213 mounted with "32bitapi" mount option
215 Severity : enhancement
216 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
218 Severity : enhancement
219 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
221 Severity : enhancement
222 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
225 Frequency : only with SLES10
227 Description: Use OFED "KMP" provided by Novell
228 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
229 Lustre is now built against this package. That means you need to
230 install the ofed-kmp package from Novell for the patchless client.
231 Note that the ofed-kmp that Novell ships may not exactly match the
232 kernel version but should still be compatible.
234 Severity : enhancement
236 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
237 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
239 --------------------------------------------------------------------------------
241 2010-07-15 Oracle, Inc.
243 * Server support for kernels:
244 2.6.18-164.11.1.el5 (RHEL 5)
245 2.6.18-164.11.1.0.1.el5 (OEL 5)
246 * Client support for unpatched kernels:
247 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
248 2.6.18-164.11.1.el5 (RHEL 5),
249 2.6.18-164.11.1.0.1.el5 (OEL 5)
250 2.6.16.60-0.42.8 (SLES 10),
252 2.6.29.4-167.fc11 (FC11)
253 * Recommended e2fsprogs version: 1.41.10-sun2
255 Severity : enhancement
257 Description: Distribute lfs_migrate script with lustre
258 Details : The lfs_migrate mentioned in the manual is now included in the
259 lustre tree in lustre/scripts and will distributed in lustre RPMs.
261 Severity : enhancement
263 Description: Failover nid list added to import proc file.
265 Severity : enhancement
267 Description: "som_preview" mount option required to use SOM
268 Details : The clients will need to use som_preview mount option
272 Description: Lustre does not do 1MB IOs to HW RAID
273 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
275 Severity : enhancement
277 Description: lfs quota output is not very convenient for awk/sed-parsing
278 Details : Some positions in lfs quota output table could be empty or
279 non-empty which made it hard to parse it with scripts, now
280 a dash is put instead of space where there is not supposed
285 Description: Update to OFED 1.5.1
286 Details : OFED 1.5.1 will be used in environments that don't use
287 vendor supplied OFED.
291 Description: Remove lnet. prefix from lctl params display
292 Details : Also renamed lnet.memused to lnet_memused to
297 Description: Use conf_param -d to remove permanant settings.
301 Description: Add list_param -R
302 Details : lctl list_param now supports recursive mode.
305 Bugzilla : 21829, 22312
306 Description: Fix llobdstat.
307 Details : 1. Now updating the write_bytes counter
308 2. Port script fixes from 1.8.
312 Description: decrease the usage of memory on clients.
313 Details : 1. On clients, recycle dentries and inodes unused.
314 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
319 Description: llobdstat fix and enhancement
320 Details : add a counter to set a limit to how many samples will be returned
321 fix a wildcard in the path to limit to obdfilter stats only
325 Description: lfs check only allowed for root
326 Details : Code cleanups and added a regresion test of non-root use of
331 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
332 Details : Fix hr->hr_index overload.
336 Description: Fix FIEMAP functionality.
340 Description: FC11 patchless client support added
344 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
345 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
349 Description: New acc-sm script and various test-framework enhancments.
353 Description: Previously landed patch was reverted.
357 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
361 Description: Add ldiskfs maxdirsize mount option.
365 Description: Fix mkfs.lustre support for 16TB LUNs.
369 Description: Print mmp_check_interval
370 Details : print mmp_check_interval and make it possible to abort
371 mount operation in case it takes too long.
375 Description: Add cascading_rw to lustre mpi tests.
379 Description: Store SOM data in EA.
380 Details : Also several SOM related cleanups.
384 Description: Add refcount to md_open_data
388 Description: Use refcount on lov_request_set to prevent memory corruption.
392 Description: Statahead: use parent dir's i_mutex for synchronization.
396 Description: loadgen improvements.
400 Description: Enable peer health detection in ksocklnd and ko2iblnd.
404 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
408 Description: Fix race on obd_devcie:md_stats
412 Description: Fix SLES 11 client builds.
413 Details : Resolved uninitalized pointer gcc warnings.
417 Description: Allow non-root access for "lfs check".
418 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
422 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
424 Severity : enhancement
426 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
427 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
431 Description: Sanity test_27p fails.
432 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
433 Sanity tests 27 were cleaned up and improved.
437 Description: Unify req format on client/servers
438 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
439 buffers and swabbers approach..
444 Description: drop join file stuff.
446 Severity : enhancement
448 Description: Add 2.6.27 and SLES11 (patchless client) support
452 Description: Fix in ptlrpc_expire_one_request() to print the signed time
455 Severity : enhancement
457 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
460 Severity : enhancement
462 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
464 Severity : enhancement
466 Description: correctly handle big reply message.
467 Details : send LNet event if reply is bigger than buffer and adjust this buffer
472 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
474 Severity : enhancement
476 Description: Add support for OEL5.
480 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
482 Severity : enhancement
484 Description: "weak-modules" support
485 Details : Implement "weak-modules" support which enables kernel modules
486 to be used with any kernel that implements the same kABI. In
487 order to achieve this modules are now installed in
488 /lib/modules/$(uname -r)/updates/kernel on all distributions.
492 Description: client could not reconnect to OST because of an active request.
493 Details : The client now retries to reconnect to the same server, if a
494 connect request failed with EBUSY or -EAGAIN. Test case 35b
495 conf-sanity.sh has been created.
499 Description: Don't allow make backward step on assignin osc next id.
500 Details : race between allocation next id and ll_sync thread can be cause
501 of set wrong osc next id and can be kill valid ost objects.
505 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
509 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
513 Description: Error handling in osc_statfs_interpret() has been improved.
514 Details : Check in osc_statfs_interpret() for EBADR.
518 Description: Do not send statfs() requests to OSTs disabled by administrator.
519 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
521 Severity : enhancement
523 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
525 Severity : enhancement
527 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
529 Severity : enhancement
531 Description: Enhancement for lfs(1) command to use numeric uid/gid.
535 Description: Improved cleanup procedure for conf-sanity test_46a.
539 Description: Do not start bulk transfer, if client tried to reconnect.
540 Details : Do not start bulk transfer, if client tried to reconnect,
541 but failed due to active rpcs. Check for exp_abort_active_req
542 has been implemented.
546 Description: Prevent inconsistences between linux and lustre mount structures.
547 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
548 Make the sleep interruptible.
550 Severity : enhancement
552 Description: provide server to client comms path
553 Details : server to client communications path via new LDLM_SET_INFO rpc
557 Description: truncate starts GFP_FS allocation under transaction causing deadlock
558 Details : ldiskfs_truncate calls grab_cache_page which may start page
559 allocation under an open transaction. This may lead to
560 calling prune_icache with consequent lustre reentrance.
564 Description: send correctly lsm on open replay
565 Details : MDS is trust to LSM size on replay open, but client can set wrong size
570 Description: enable client interface failover
571 Details : When a child reconnects from another NID, properly update export
572 nid hash position and ldlm reverse import.
574 Severity : enhancement
576 Description: Communicate OST degraded/readonly state via statfs to MDS
577 Details : Flags in the statfs returned from OSTs indicate whether the
578 OST is in a degraded RAID state, or if the filesystem has
579 turned read-only after a filesystem error is detected.
584 Description: don't panic if EPROTO was hit when reading symlink
585 Details : correctly handling request reference in error cases.
587 Severity : enhancement
589 Description: Add LustreNetLink, a kernel-userspace communcation path.
591 Severity : enhancement
593 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
598 Description: access to llog context before init.
599 Details : move handling CATALOGS file at osc layer and forbid access to llog
603 Frequency : rare, only when client is writing to OST on local node
605 Description: Avoid deadlock for local client writes
606 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
607 memory freeing context. This allows OST threads to set the
608 PF_MEMALLOC flag on task structures in order to allocate memory
609 from reserved pools and complete IO.
610 Use GFP_HIGHUSER for OST allocations for non-local client writes,
611 so that the OST threads generate memory pressure and allow
612 inactive pages to be reclaimed.
614 Severity : enhancement
616 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
621 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
622 Details : move ldlm namespace creation in setup phase to avoid grab
623 _lprocfs_lock with cli_sem held.
627 Description: Temporarily disable grant shrink.
628 Details : Disable the feature for debugging.
631 Frequency : only when formatting test filesystems
633 Description: Unable to run several mkfs.lustre on loop devices at the same time
634 Details : mkfs.lustre returns error 256 on the concurrent loop devices
635 formatting. The solution is to proper handle the error.
637 Severity : enhancement
639 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
641 Severity : enhancement
643 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
648 Description: resolve race between obd_disconnect and class_disconnect_exports
649 Details : if obd_disconnect will be called to already disconnected export he
650 forget release one reference and osc module can't unloaded.
652 Severity : enhancement
654 Description: Allow tuning service thread via /proc
655 Details : For each service a new
656 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
657 created that can be used to set min/max thread counts, and get the
658 current number of running threads.
663 Descriptoin: don't return error if have partially created objects for file.
664 Details : lov_update_create_set uses set->set_success as index for created
665 objects, so if some requests will be failed, they will have hole
666 at end of array and qos_shrink_lsm for allocate correct lsm.
668 Severity : enhancement
670 Description: Update OFED support to 1.4.1
675 Description: Reduce small size read RPC
676 Details : Set read-ahead limit for every file and only do read-ahead when
677 available read-ahead pages are bigger than 1M to avoid small size
680 Severity : enhancement
682 Description: move AT tunable parameters for more consistent usage
683 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
685 Severity : enhancement
687 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
688 Details : allow skip disconnected ost for send statfs request and hide error
694 Description: fix racy locking of mballoc block bitmaps causing BUG
695 Details : The locking of the mballoc buddy bitmap and the in-memory
696 block bitmap was using two different spin locks in some
697 cases. This made it possible to incorrectly access the
698 mballoc bitmap while another process was modifying it,
699 causing a sanity assertion to fail. While no on-disk corruption
700 was reported, there was some risk of this happening.
703 Frequency : rare, on llog test 6
705 Descriptoin: don't allow connect to already connected import
706 Details : allowing connect to already connected import is hide connecting problem.
711 Descriptoin: allow kill process which wait statahead result
712 Details : for some reasons 'ls' can stick in waiting result from statahead,
713 in this case need way for kill this process.
715 Severity : enhancement
717 Description: Add state history info file, enhance import info file
718 Details : Track import connection state changes in a new osc/mdc proc file;
719 add overview-type data to the osc/mdc import proc file.
721 Severity : enhancement
723 Description: MDS create should not wait for statfs RPC while holding DLM lock.
725 Severity : enhancement
727 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
732 Descriptoin: OST grant too much space to client even there are not enough space.
733 Details : Client will shrink its grant cache to OST if there are no write
734 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
735 this grant cache if there are already not enough avaible space
736 (left_space < total_clients * 32M).
739 Frequency : start MDS on uncleanly shutdowned MDS device
741 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
742 Details : stay in waiting mds<>ost recovery finished produce random bugs
743 due race between two ll_sync thread for one lov target. send
744 ACTIVATE event only if connect realy finished and import have
748 Frequency : rare, connect and disconnect target at same time
750 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
751 Details : don't call obd_disconnect under lov_lock. this long time
752 operation and can block ptlrpcd which answer to connect request.
757 Descriptoin: don't lose wakeup for imp_recovery_waitq
758 Details : recover_import_no_retry or invalidate_import and import_close can
759 both sleep on imp_recovery_waitq, but we was send only one wakeup
763 Frequency : always with long access acl
765 Descriptoin: mds can't pack reply with long acl.
766 Details : mds don't control size of acl but they limited by reint/getattr
769 Severity : enhancement
771 Description: Update to SLES10 kernel-2.6.16.60-0.33.
773 Severity : enhancement
775 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
778 Frequency : start MDS on uncleanly shutdowned MDS device
780 Descriptoin: aborting recovery hang on MDS
781 Details : don't throttle destroy RPCs for the MDT.
784 Frequency : on remount
786 Description: external journal device not working after the remount
787 Details : clear dev_rdonly flag for external journal devices in
793 Description: shutdown vs evict race
794 Details : client_disconnect_export vs connect request race.
795 if client will evicted at this time - we start invalidate
796 thread without referece to import and import can be freed
800 Frequency : rare, need acl's on inode.
802 Description: client can't handle ost additional correctly
803 Details : if ost was added after client connected to mds client can have
804 hit lnet_try_match_md ... to big messages to wide striped files.
805 in this case need teach client to handle config events about add
806 lov target and update client max ea size at that event.
808 Severity : enhancement
810 Description: Changelogs
811 Details : Changelogs are a lightweight mechanism to track filesystem
812 metadata and namespace changes. The changelog is recorded
813 permanently on the MDTs, and is periodically "consumed" / purged
814 when records are no longer needed.
816 Severity : enhancement
818 Description: compact fld format with extents
819 Details : Store range of seq rather than every seq in FLD. Seq
820 controller update FLD rather than clients. In Case of CMD, mdt0
821 has FLD, all other metadata server act as non persistent proxy
822 for FLD queries and cache fld entries in fld cache.
827 Description: don't skip ost target if they assigned to file
828 Details : Drop slow OSCs if we can, but not for requested start idx.
829 This means "if OSC is slow and it is not the requested
830 start OST, then it can be skipped, otherwise skip it only
831 if it is inactive/recovering/out-of-space.
835 Description: more cleanup in mds_lov
836 Details : not send LOV EA under replay, we can't know about they size at this
837 time. Don't allow client connect to mds before any ost connected,
838 for avoid problems with LOV EA size and returning EIO to client.
840 Severity : enhancement
842 Description: Interoperability at server side (Disk interoperability)
844 Severity : enhancement
846 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
848 Severity : enhancement
850 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
852 Severity : enhancement
854 Description: New client IO stack (CLIO).
856 Severity : enhancement
858 Description: Commit on sharing. Eliminate inter-client dependencies between
859 uncommitted transactions by doing transaction commits.
860 Thereby clients may recovery independently.
863 Frequency : Create a symlink file with a very long name
865 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
866 Details : If there is no extra space in the request for early cancels,
867 ldlm_req_handles_avail() returns 0 instead of a negative value.
869 Severity : enhancement
871 Description: Add /proc entry for import status
872 Details : The mdc, osc, and mgc import directories now have
873 an import directory that contains useful import data for debugging
876 Severity : enhancement
878 Description: Re-disable certain /proc logging
879 Details : Enable and disable client's offset_stats, extents_stats and
880 extents_stats_per_process stats logging on the fly.
883 Frequency : Only on FC kernels 2.6.22+
885 Description: oops in statahead
886 Details : Do not drop reference count for the dentry from VFS when lookup,
887 VFS will do that by itself.
889 Severity : enhancement
891 Description: Generic /proc file permissions
892 Details : Set /Proc file permissions in a more generic way to enable non-
893 root users operate on some /proc files.
897 Description: Hitting mdc_commit_close() ASSERTION
898 Details : Properly handle request reference release in
899 ll_release_openhandle().
903 Description: quota recovery deadlock during mds failover
904 Details : This patch includes att18982, att18236, att18237 in bz14840.
906 1. fix osts hang when mds does failover with quotaon
907 2. prevent watchdog storm when osts threads wait for the
912 Frequency : only patchless client
913 Description: add workaround for race between add/remove dentry from hash
915 Severity : enhancement
917 Description: Allow OST glimpses to return PW locks
921 Description: LBUG when llog conf file is full
922 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
926 Description: Prevent import from entering FULL state when server in recovery
930 Description: service mount cannot take device name with ":"
931 Details : Only when device name contains ":/" will mount treat it as
937 Description: replace ptlrpcd with the statahead thread to interpret the async
938 statahead RPC callback
942 Frequency : on recovery
943 Description: I/O failures after umount during fail back
944 Details : if client reconnected to restarted server we need join to recovery
945 instead of find server handler is changed and process self
946 eviction with cancel all locks.
948 Severity : enhancement
950 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
952 Severity : enhancement
954 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
956 Severity : enhancement
958 Description: Upcall on Lustre log has been dumped
959 Details : Allow for a user mode script to be called once a Lustre log has
960 been dumped. It passes the filename of the dumped log to the
961 script, the location of the script can be specified via
962 /proc/sys/lnet/debug_log_upcall.
967 Description: avoid idr_remove called for id which is not allocated.
968 Details : Move assigment s_dev for clustered nfs to end of initialization,
969 to avoid problem with error handling.
974 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
975 Details : When connection is reused this not moved from CONN_UNUSED_HASH
976 into CONN_USED_HASH and this prodice warning when put connection
977 again in unused hash.
980 Severity : enhancement
982 Description: File striping can now be set to use an arbitrary pool of OSTs.
984 Severity : enhancement
986 Description: Export bytes_read/bytes_write count on OSC/OST.
990 Description: Early reply size mismatch, MGC loses connection
991 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
992 the connect flags are properly negotiated.
997 Description: quotas are not honored with O_DIRECT
998 Details : all writes with the flag O_DIRECT will use grants which leads to
999 this problem. Now using OBD_BRW_SYNC to guard this.
1003 Description: add quota statistics
1004 Details : 1. sort out quota proc entries and proc code.
1005 2. add quota statistics
1007 Severity : enhancement
1009 Description: enable quota support for HEAD.
1013 Description: Properly propagate oinfo flags from lov to osc for statfs
1014 Details : restore missing copy oi_flags to lov requests.
1016 Severity : enhancement
1018 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
1019 : l_getgroups(8), lst(8), routerstat(8)
1020 Details : included man pages for llobdstat(8), llstat(8),
1021 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
1023 Severity : enhancement
1025 Description: configure's --enable-quota should check the
1026 : kernel .config for CONFIG_QUOTA
1027 Details : configure is terminated if --enable-quota is passed but
1028 : no quota support is in kernel
1032 Description: Remove portals compatibility
1033 Details : Remove portals compatibility, not interoperable with releases
1038 Description: Resolve device initialization race
1039 Details : Prevent proc handler from accessing devices added to the
1040 obd_devs array but yet be intialized.
1042 Severity : enhancement
1044 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1046 Severity : enhancement
1048 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1053 Description: Using wrong pointer in osc_brw_prep_request
1054 Details : Access to array[-1] can produce panic if kernel compiled with
1055 CONFIG_PAGE_ALLOC enabled
1059 Description: Client runs out of low memory
1060 Details : Consider only lowmem when counting initial number of llap pages
1064 Description: *optional* service tags registration
1065 Details : if the "service tags" package is installed on a Lustre node
1066 When the filesystem is mounted, a local-node service tag will
1067 be created. See http://inventory.sun.com/ for more information
1068 about the Service Tags asset management system.
1072 Description: Kernel BUG tries to release flock
1073 Details : Lustre does not destroy flock lock before last reference goes
1074 away. So always drop flock locks when client is evicted and
1075 perform unlock regardless of successfulness of speaking to MDS.
1079 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1083 Description: sanity test 65a fails if stripecount of -1 is set
1084 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1089 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1090 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1093 Severity : enhancement
1095 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1099 Description: do not process already freed flock
1100 Details : flock can possibly be freed by another thread before it reaches
1101 to ldlm_flock_completion_ast.
1105 Description: LBUG during stress test
1106 Details : Need properly lock accesses the flock deadlock detection list.
1110 Description: oops in page fault handler
1111 Details : kernel page fault handler can return two special 'pages' in error
1112 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1116 Description: timeout with invalidate import.
1117 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1118 should be handled by ptlrpcd. This produce long age waiting and
1119 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1121 Severity : enhancement
1123 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1127 Description: enable MGS and MDT services start separately
1128 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1129 a co-located MGS without starting the MGS, which is a complement
1130 to 'nosvc' mount option.
1134 Frequency : after recovery
1135 Description: precreate to many object's after del orphan.
1136 Details : del orphan st in oscc last_id == next_id and this triger growing
1137 count of precreated objects. Set flag LOW to skip increase count
1138 of precreated objects.
1142 Frequency : rare, on clear nid stats
1143 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1144 Details : when clean nid stats sometimes try destroy live entry,
1145 and this produce panic in free.
1149 Description: Stack overflow during MDS log replay
1150 ease stack pressure by using a thread dealing llog_process.
1154 Description: wait until IO finished before start new when do lock cancel.
1155 Details : VM protocol want old IO finished before start new, in this case
1156 need wait until PG_writeback is cleared until check dirty flag and
1157 call writepages in lock cancel callback.
1159 Severity : enhancement
1161 Description: using special macro for print time and cleanup in includes.
1165 Description: mds_mfd_close() ASSERTION(rc == 0)
1166 Details : In mds_mfd_close(), we need protect inode's writecount change
1167 within its orphan write semaphore to prevent possible races.
1171 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1175 Frequency : rare, on shutdown ost
1176 Description: don't hit live lock with umount ost.
1177 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1178 use shrink_dcache_sb instead.
1182 Description: don't panic with use echo client
1183 Details : echo client pass NULL as client nid pointer and this produce null
1184 pointer dereference.
1188 Description: fix build on ppc32
1189 Details : compile code with -m64 flag produce wrong object file for ppc32.
1193 Description: add message levels for liblustreapi
1197 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1198 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1199 will result in an -EAGAIN and in the exit call path we call
1200 alloc_rr() which will with increasing aggressiveness attempt to
1201 aquire precreated objects on the minimum number of required OSCs.
1205 Description: Use old size assignment to avoid deadlock
1206 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1207 the scheduling while holding a spinlock. We do not need locking
1208 for size in ll_update_inode() because size is only updated from
1209 the MDS for directories or files without objects, so there is no
1210 other place to do the update, and concurrent access to such inodes
1211 are protected by the inode lock.
1215 Description: resolve "_IOWR redefined" build error on SLES10
1219 Description: dump the memory debugging after all modules are unloaded to
1220 suppress false negative in conf_sanity test 39
1222 Severity : enhancement
1224 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1229 Description: fix SLES kernel versioning
1230 Details : the kernel version for our SLES 10 kernel did not include a "-"
1231 before the "smp" at the end. while this was not a problem in
1232 general, it did mean that software trying to use the kernel
1233 version to try to detect a vendor specific kernel would fail.
1234 this was most evident by the OFED build scripts.
1238 Description: Don't update lov_desc members until making sure they are valid
1239 Details : When updating lov_desc members via proc fs, need fix their
1240 validities before doing the real update.
1244 Description: don't put request into delay list while invalidate in flight.
1245 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1246 import in flight. this produce timeout for invalidate and sometimes
1247 can cause stale data.
1251 Frequency : on ppc only
1252 Description: not convert ost objects for directory because it's not exist.
1253 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1257 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1259 Severity : enhancement
1261 Description: Update to support 2.6.22.14 vanilla kernel.
1265 Frequency : rare, on recovery
1266 Description: read procfs can produce deadlock in some situation
1267 Details : Holding lprocfs lock which send rpc can produce block for destroy
1268 obd objects and this also block reconnect with -EALREADY. This
1269 isn't fix all lprocfs bugs - but make it rare.
1271 Severity : enhancement
1273 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1276 Frequency : frequent on X2 node
1278 Description: mdc_set_open_replay_data LBUG
1279 Details : Set replay data for requests that are eligible for replay.
1283 Description: lustre_mgs: operation 101 on unconnected MGS
1284 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1285 MGC, and late on MGC cannot successfully connect to MGS and a lot
1286 of the error messages complaining that MGS is not connected.
1290 Frequency : on network error
1291 Description: panic with double free request if network error
1292 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1293 but it's true only for synchronus enqueue, for async enqueue
1294 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1297 Severity : enhancement
1299 Description: client-side metadata stat-ahead during readdir(directory readahead)
1300 Details : perform client-side metadata stat-ahead when the client detects
1301 readdir and sequential stat of dir entries therein
1304 Frequency : on start mds
1306 Description: Implement get_info(last_id) in obdfilter.
1309 Frequency : occasional
1311 Description: Correctly check stale fid, not start epoch if ost not support SOM
1312 Details : open with flag O_CREATE need set old fid in op_fid3 because
1313 op_fid2 was overwritten with new generated fid, but mds can answer
1314 with one of these two fids and both is not stale. Setattr
1315 incorrectly started an epoch and assume will be called
1316 done_writing, but without SOM done_writing ever being called.
1319 Frequency : rare, depends on device drivers and load
1321 Description: MDS or OSS nodes crash due to stack overflow
1322 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1323 In some cases, in conjunction with device drivers that use a lot
1324 of stack the MDS (or possibly OSS) service threads could overflow
1325 the stack. One change which was identified to consume additional
1326 stack has been reworked to avoid the extra stack usage.
1329 Frequency : occasional
1331 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1332 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1333 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1334 oscc_has_objects and see OSC has no objests and call
1335 oscc_internal_create to resend create request.
1337 Severity : enhancement
1339 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1341 Severity : enhancement
1343 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1346 Frequency : very rare
1348 Description: Fix replay if there is an un-replied request and open
1349 Details : In some cases, older replay request will revert the
1350 mcd->mcd_last_xid on MDS which is used to record the client's
1351 latest sent request.
1353 Severity : enhancement
1355 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1357 Severity : enhancement
1359 Description: Add rhel5 support to HEAD.
1361 Serverity : enhancement
1363 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1368 Description: Don't allow skipping OSTs if index has been specified.
1369 Details : Don't allow skipping OSTs if index has been specified, make
1370 locking in internal create lots better.
1374 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1375 Details : access to bitfield in structure is always rounded to long
1376 and this produce problem with not atomic change any bit.
1380 Description: Lustre make rpms failed.
1381 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1382 builds Lustre rpms from tarball.
1385 Frequency : rare on shutdown ost
1387 Description: If llog cancel was not send before clean_exports phase, this can
1388 produce deadlock in llog code.
1389 Details : If llog thread has last reference to obd and call class_import_put
1390 this produce deadlock because llog_cleanup_commit_master wait when
1391 last llog_commit_thread exited, but this never success because was
1392 called from llog_commit_thread.
1396 Description: allow userland application know is lost one of stripes.
1397 Details : fill lvb_blocks with error code on ost and return it to
1398 application if error flag found.
1402 Description: NULL lov_tgts causing MDS oops
1403 Details : more safe checks for NULL lov_tgts for avoid oops.
1405 Severity : enhancement
1407 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1411 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1412 Details : If an OST is down the MDS will hang indefinitely in
1413 obd_statfs_rqset() waiting for the statfs data. While for
1414 MDS QOS usage of statfs, it should not stuck in waiting.
1416 Severity : enhancement
1418 Description: remote_acl support
1419 Details : Support ACL-based permission check for remote user.
1420 Support setfacl/getfacl for remote user with the utils
1421 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1422 the system "{s,g}etfacl" utils.
1424 Severity : enhancement
1426 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1428 Severity : enhancement
1430 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1434 Description: make mgs_setparam() handle fsname containing dash
1435 Details : fsname containing a dash does not work with lctl conf_param
1437 Severity : enhancement
1439 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1441 Severity : enhancement
1443 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1447 Frequency : rare, at shutdown
1448 Description: access already free / zero obd_namespace.
1449 Details : if client_disconnect_export was called without force flag set,
1450 and exist connect request in flight, this can produce access to
1451 NULL pointer (or already free pointer) when connect_interpret
1452 store ocd flags in obd_namespace.
1456 Frequency : only at startup
1457 Description: not alloc memory with spinlock held.
1458 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1459 if any spinlock held.
1461 Severity : enhancement
1463 Description: make lustre randomly fail allocating memory
1464 Details : Make lustre randomly failed allocating memory for testing purpose.
1466 Severity : enhancement
1468 Description: lost problems with lov objid file
1469 Details : Fixes some scability and access to not inited memory problems
1470 in work with lov objdid file.
1475 Description: lfs find does not continue on file error
1476 Details : Continue other files processing when a file/dir is absent.
1480 Description: Inconsistent usage of lustre_pack_reply()
1481 Details : Standardize the usage of lustre_pack_reply() such that it
1482 always generate a CERROR on failure.
1485 Frequency : occasional
1487 Description: MDS hang or stay in waiting lock
1488 Details : If client receive lock with CBPENDING flag ldlm need send lock
1489 cancel as separate rpc, to avoid situation when cancel request
1490 can't processed due all i/o threads stay in wait lock.
1494 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1498 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1502 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1506 Description: Update to RHEL4 latest kernel.
1508 Severity : enhancement
1510 Description: Build SLES10 patchless client fails
1511 Details : The configure was broken by run ./configure with
1512 --with-linux-obj=.... argument for patchless client. When the
1513 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1514 can't search header adequately. Use absolute path such as
1515 -I($LINUX)/include instead.
1519 Description: interrupt oig_wait produce painc on resend.
1520 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1521 private set, and this produce situation when rq_ptlrpcd_data not
1522 copyed to new allocated request and triggered LBUG on assert
1523 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1524 ptlrpcd set if request is changed and can be safety changed to use
1529 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1530 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1531 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1532 these macros and replace them with their difinitions instead.
1536 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1537 Details : Update which_patch & target file for SLES10 latest kernel.
1540 Description: Remove client patches from SLES 10 kernel.
1541 Details : This causes SLES 10 clients to behave as patchless clients
1542 even on a Lustre-patched (server) kernel.
1544 Severity : enhancement
1546 Description: self-adjustable client's lru lists
1547 Details : use adaptive algorithm for managing client cached locks lru
1548 lists according to current server load, other client's work
1549 pattern, memory activities, etc. Both, server and client
1550 side namespaces provide number of proc tunables for controlling
1553 Severity : enhancement
1555 Description: light-weight GSS support
1556 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1557 and reduce performance overhead.
1559 Severity : enhancement
1561 Description: Linux keyring support
1562 Details : Support using service of Linux keyring for Lustre GSS internal
1563 context refresh/cache mechanism.
1567 Description: Fix errors in lfs documentation
1568 Details : Fixes man pages
1572 Description: don't use GFP_* in generic Lustre code.
1573 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1577 Description: obdclass is limited by single OBD_ALLOC(idarray)
1578 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1582 Description: warnings with build patchless client with vanila 2.6.19 and up
1583 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1584 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1588 Frequency : Only for SLES
1589 Description: sanity_quota fail test_1
1590 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1591 file, which makes TSTID[2] inunique.
1595 Frequency : Only for SLES9
1596 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1597 Details : Update target/ChangeLog/which_patch .
1601 Frequency : Only for test_10 in sanity-quota.sh
1602 Description: a bug in quota test code
1603 Details : checking a test flag in a wrong place
1607 Frequency : Only for test_13 in sanity-quota.sh
1608 Description: a bug in quota test script
1609 Details : shouldn't check overfull allocated quota
1613 Description: jbd statistics
1614 Details : Port older jbd statistics patch for sles10
1616 Severity : enhancement
1618 Description: Add printing inode info into message about error in writepage.
1623 Description: reply_lock_interpret crash due to race with it and lock cancel.
1624 Details : Do not replay locks that are being cancelled. Do not reference
1625 locks by their address during replay, just by their handle.
1629 Frequency : When flocks are used.
1630 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1631 Details : Flock locks might destroy just granted lock if it could be merged
1632 with another existing flock, this is done in completion handler,
1633 so teach ldlm_cli_enquque_fini that this is a valid case for
1639 Description: Oops in read and write path when failing to allocate lock.
1640 Details : Check if lock allocation failed and return error back.
1644 Description: lstripe command fails for valid OST index
1645 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1646 instead of lov->desc.ld_active_tgt_count.
1650 Description: sanity.sh failed test 103
1651 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1656 Description: df doesn't work properly if diskfs blocksize != 4K
1657 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1661 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1662 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1664 Severity : enhancement
1666 Description: Adaptive timeouts
1667 Details : RPC timeouts adapt to changing server load and network
1668 conditions to reduce resend attempts and improve recovery time.
1672 Description: llapi_file_create() does not allow some changes
1673 Details : add llapi_file_open() that allows specifying the mode and
1674 open flags, and also returns an open file handle.
1678 Description: merge and cleanup kernel patches.
1679 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1683 Description: Add journal checksum support.(Kernel part)
1684 Details : The journal checksum feature adds two new flags i.e
1685 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1686 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1687 indicates that the commit block contains the checksum for
1688 the blocks described by the descriptor blocks. Now commit
1689 record can be sent to disk without waiting for descriptor
1690 blocks to be written to disk. This behavior is controlled
1691 using JBD2_FEATURE_ASYNC_COMMIT flag.
1695 Description: OSS needs mutliple precreate threads
1696 Details : Add ability to start more than one create thread per OSS.
1700 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1701 Details : execute lfs setstripe on client
1705 Description: mds_obd_create error creating tmp object
1706 Details : When the user sets quota on root, llog will be affected and can't
1707 create files and write files.
1710 Frequency : Always on ia64 patchless client, and possibly others.
1712 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1713 Details : This allows the patchless client to be loaded on architectures
1714 without this export.
1718 Description: RedHat Update kernel for RHEL5
1719 Details : Add the kernel config file for RHEL5.
1723 Description: RedHat Update kernel for RHEL5
1724 Details : Modify the kernel config file more closer RHEL5.
1728 Description: Build failure against Centos5 (RHEL5)
1729 Details : Define PAGE_SIZE when it isn't present.
1733 Description: test_7 on sanity-quota.sh can't be used on separate machines
1734 Details : add facet to handle it
1738 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1739 Details : with NFS, the anon dentry's parent was set to itself in
1740 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1741 corresponding dentry other than use rec->ur_name.
1743 Severity : enhancement
1745 Description: lfs setstripe enhancement
1746 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1750 Description: enable data checksumming by default
1751 Details : enable checksum by default, allow --disable-checksum
1752 configure option and "-o nochecksum" mount option. Checksums
1753 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1757 Description: lustre support for RHEL5
1758 Details : Add support for RHEL5.
1762 Description: Client eviction due to failover config
1763 Details : after a connection loss, the lustre client should attempt to
1764 reconnect to the last active server first before trying the
1765 other potential connections.
1769 Description: when mds and osts use different quota unit(32bit and 64bit),
1770 quota will be released repeatly.
1771 Details : void sending multiple quota reqs to mds, which will keep the
1772 status between the reqs.
1776 Description: osts not allocated evenly to files
1777 Details : change the condition to increase offset_idx
1780 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1782 Description: Data corruption for OSTs that are formatted larger than 2TB
1784 Details : When generating the bio request for lustre file writes the
1785 sector number would overflow a temporary variable before being
1786 used for the IO. The data reads correctly from Lustre (which
1787 will overflow in a similar manner) but other file data or
1788 filesystem metadata may be corrupted in some cases.
1792 Description: Tune the kernel for good SCSI performance.
1793 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1794 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1799 Description: rewrite ext2-derived code in obdclass/uuid.c
1800 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1801 from scratch preserving functionality.
1805 Description: "lfs find -obd UUID" prints directories
1806 Details : "lfs find -obd UUID" will return all directory names instead
1807 of just file names. It is incorrect because the directories
1808 do not reside on the OSTs.
1812 Description: use i_size_read and i_size_write in 2.6 port
1813 Details : replace inode->i_size access with i_size_read/write()
1816 Frequency : when removing large files
1818 Description: scheduling issue during removal of large Lustre files
1819 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1820 It causes scheduling issues when removing large files (17TB in the
1824 Frequency : only with liblustre clients on XT3
1826 Description: evictions taking too long
1827 Details : allow llrd to evict clients directly on OSTs
1830 Frequency : only on ppc
1832 Description: /proc/fs/lustre/devices broken on ppc
1833 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1834 We should make sure the type of 'index' is loff_t and then cast
1835 explicitly as needed below. Do not assign an explicitly cast
1839 Frequency : only for rhel5
1841 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1842 Details : Modify the target file & which_kernel.
1844 Severity : enhancement
1846 Description: omit set fsid for export NFS
1847 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1848 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1852 Frequency : Always, for kernels after 2.6.16
1853 Description: Fix warning idr_remove called for id=.. which is not allocated.
1854 Details : Last kernels save old s_dev before kill super and not allow
1855 to restore from callback - restore it before call kill_anon_super.
1859 Description: buffer overruns could theoretically occur
1860 Details : llapi_semantic_traverse() modifies the "path" argument by
1861 appending values to the end of the origin string, and a
1862 overrun may occur. Adding buffer overrun check in liblustreapi.
1866 Description: Fix error on 'ls .' at the top of the Lustre mount.
1867 Details : Don't revalidate dentry if it is a root dentry.
1871 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1872 Details : Modify vm-tunables-rhel4.patch.
1876 Description: Kernel config for 2.6.18-vanilla.
1877 Details : Modify targets/2.6-vanilla.target.in.
1878 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1879 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1880 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1881 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1885 Description: improve handling recoverable errors
1886 Details : if request processig with error which can be recoverable on server
1887 request should be resend, otherwise page released from cache and
1892 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1893 Details : Modify target file & which_patch.
1894 A flaw was found in the IA32 system call emulation provided
1895 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1896 value could be stored in the %RAX register, which could trigger an
1897 out-of-bounds system call table access. An untrusted local user
1898 could exploit this flaw to run code in the kernel
1899 (ie a root privilege escalation). (CVE-2007-4573).
1903 Description: O_DIRECT bypasses client statistics.
1904 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1905 read_ahead_stats were updated. copied the stats section from
1906 osc_send_oap_rpc() into async_internal().
1910 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1914 Description: change order of libsysio includes
1915 Details : '#include sysio.h' should always come before '#include xtio.h'
1919 Description: handle "serious error: objid * already exists" more gracefully
1920 Details : If LAST_ID value on disk is smaller than the objects existing in
1921 the O/0/d* directories, it indicates disk corruption and causes an
1922 LBUG(). If the object is 0-length, then we should use the existing
1923 object. This will help to avoid a full fsck in most cases.
1925 Severity : enhancement
1927 Description: adapt the lustre_config script to support the upgrade case
1928 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1929 server targets to 1.6 in parallel.
1933 Description: To avoid grant space > avaible space when the disk is almost
1934 full. Without this patch you might see the error "grant XXXX >
1935 available" or some LBUG about grant, when the disk is almost
1937 Details : In filter_check_grant, for non_grant cache write, we should
1938 check the left space by if (*left > ungranted + bytes), instead
1939 of (*left > ungranted), because only we are sure the left space
1940 is enough for another "bytes", then the ungrant space should be
1941 increase. In client, we should update cl_avail_grant only there
1942 is OBD_MD_FLGRANT in the reply.
1946 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1947 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1948 described in CVE-2007-4573. This problem could allow untrusted
1949 local users to gain root access.
1952 Frequency : when using O_DIRECT and quotas
1954 Description: Incorrect file ownership on O_DIRECT output files
1955 Details : block usage reported by 'lfs quota' does not take into account
1956 files that have been written with O_DIRECT.
1961 Description: touch file failed when fs is not full
1962 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1963 otherwise we can get ENOSP while fs is not full.
1967 Description: parallel lock callbacks
1968 Details : Instead of sending blocking and completion callbacks as separated
1969 requests, adding them to a set and sending in parallel.
1972 Frequency : only for Cray XT3
1973 Bugzilla : 12829/13455
1974 Description: Changing primary group doesn't change the group lustre assigns to
1976 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
1977 overridden with the primary group provided by the group upcall,
1978 whereas the supplied fsgid can be trusted if it is in the list of
1979 supplementary groups returned by the group upcall.
1981 Severity : enhancement
1983 Description: Allow masking D_WARNING, D_ERROR messages from console
1984 Details : Console messages can now be disabled via lnet.printk.
1988 Description: User code with malformed file open parameter crashes client node
1989 Details : Before packing join_file req, all the related reference should be
1990 checked carefully in case some malformed flags cause fake
1991 join_file req on client.
1995 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
1996 Details : ldlm_completion_ast() assumes that a lock is granted when the req
1997 mode is equal to the granted mode. However, it should also check
1998 that LDLM_FL_CP_REQD is not set.
2002 Description: Heavy nfs access might result in deadlocks
2003 Details : After ELC code landed, it is now improper to enqueue any mds
2004 locks under och_sem, because enqueue might want to decide to
2005 cancel open locks for same inode we are holding och_sem for.
2009 Description: Client eviction while running blogbench
2010 Details : A lot of unlink operations with concurrent I/O can lead to a
2011 deadlock causing evictions. To address the problem, the number of
2012 oustanding OST_DESTROY requests is now throttled to
2013 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
2014 callbacks are processed in priority.
2018 Description: enable ACLs on MDS by default
2019 Details : ACLs must be enabled on MDS by default.
2022 Frequency : PPC/PPC64 only
2024 Description: conflicts between asm-ppc64/types.h and lustre_types.h
2025 Details : fix duplicated definitions between asm-ppc64/types.h and
2026 lustre_types.h on PPC.
2029 Frequency : PPC/PPC64 only
2031 Description: asm-ppc/segment.h does not exist
2032 Details : fix compile issue on PPC.
2036 Description: better handle error messages in extents code
2039 Frequency : RHEL4 only
2041 Description: mkfs is very slow on IA64/RHEL4
2042 Details : A performance regression has been discovered in the MPT Fusion
2043 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2044 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2045 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2047 Severity : enhancement
2049 Description: SNMP support enhancement
2050 Details : Adding total number of sampled request for an MDS node in snmp
2053 Severity : enhancement
2055 Description: Optimize ldlm waiting list processing for PR extent locks
2056 Details : When processing waiting list for read extent lock and meeting read
2057 lock that is same or wider to it that is not contended, skip
2058 processing rest of the list and immediatelly return current
2059 status of conflictness, since we are guaranteed there are no
2060 conflicting locks in the rest of the list.
2064 Description: Time out and refuse to reconnect
2065 Details : When the failover node is the primary node, it is possible
2066 to have two identical connections in imp_conn_list. We must
2067 compare not conn's pointers but NIDs, otherwise we can defeat
2068 connection throttling.
2072 Description: port llog fixes from b1_6 into HEAD
2073 Details : Port llog reference couting and some llog cleanups from b1_6
2074 (bug 10800) into HEAD, for protect from panic and access to already
2075 free llog structures.
2079 Description: Detect stride IO mode in read-ahead
2080 Details : When a client does stride read, read-ahead should detect that and
2081 read-ahead pages according to the detected stride pattern.
2085 Description: data checksumming impacts single node performance
2086 Details : add support for several checksum algorithm. Currently, only CRC32
2087 and Adler-32 are supported. The checksum type can be changed on
2088 the fly via /proc/fs/lustre/osc/*/checksum_type.
2092 Description: use adler32 for page checksums
2093 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2098 Description: build for x2 fails
2099 Details : fix compile issue on Cray systems.
2103 Description: Properly match for duplicate locks
2104 Details : Due to different lock order from skiplists code, we need to
2105 traverse entire list for now
2108 Frequency : only on PPC/SLES10
2110 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2111 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2112 be defined. Add a hack in mkfs_lustre.c to work around this compile
2117 Description: LASSERT on MDS when client holding flock lock dies
2118 Details : ldlm pool logic depends on number of granted locks equal to
2119 number of released locks which is not true for flock locks, so
2120 just exclude such locks from consideration.
2124 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2125 Details : Use fsfilt_sync() for both the whole filesystem sync and
2126 individual file sync to eliminate dangerous inode locking
2127 with I_LOCK that can lead to a deadlock.
2131 Description: performance in 1.6.3
2132 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2133 sure that 1MB requests are not fragmented by the block layer.
2135 Severity : enhancement
2137 Description: organize the server-side client stats on per-nid basis
2138 Details : Change the structure of stats under obdfilter and mds to
2146 The "uuid"s file would list the uuids of _active_ exports.
2147 And the clear entry is to clear all stats and stale nids.
2149 Severity : enhancement
2151 Description: eliminate client locks in face of contention
2152 Details : file contention detection and lockless i/o implementation
2153 for contended files.
2157 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2160 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2162 Description: MDS may lose file striping (and hence file data) in some cases
2163 Details : If there are additional extended attributes stored on the MDS,
2164 in particular ACLs, SELinux, or user attributes (if user_xattr
2165 is specified for the client mount options) then there is a risk
2166 of attribute loss. Additionally, the Lustre file striping
2167 needs to be larger than default (e.g. striped over all OSTs),
2168 and an additional attribute must be stored initially in the
2169 inode and then increase in size enough to be moved to the
2170 external attribute block (e.g. ACL growing in size) for file
2175 Description: skiplist implementation simplification
2176 Details : skiplists are used to group compatible locks on granted list
2177 that was implemented as tracking first and last lock of each
2178 lock group the patch changes that to using doubly linked lists
2182 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2183 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2184 because LASSERT on both the data supplied by a client, and the
2185 data on disk is dangerous and incorrect.
2187 Severity : enhancement
2189 Description: Slow truncate/writes to huge files at high offsets.
2190 Details : Directly associate cached pages to lock that protect those pages,
2191 this allows us to quickly find what pages to write and remove
2192 once lock callback is received.
2196 Description: more ldlm soft lockups
2197 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2198 starve other threads from the resource lock for a long time in
2199 case of long waiting queue, so change the debug level from
2200 D_OTHER to the less frequently used D_INFO.
2202 Severity : enhancement
2204 Description: add -gid, -group, -uid, -user options to lfs find
2208 Description: Hung threads in invalidate_inode_pages2_range
2209 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2210 once one is completed. As a result, some RPCs are stuck in the
2211 queue and are never sent.
2215 Description: filter threads hungs on waiting journal commit
2216 Details : Cleanup filter group llog code, then only filter group llog will
2217 be only created in the MDS/OST syncing process.
2221 Description: Procfs and llog threads access destoryed import sometimes.
2222 Details : Sync the import destoryed process with procfs and llog threads by
2223 the import refcount and semaphore.
2225 Severity : enhancement
2227 Description: openlock cache of b1_6 port to HEAD
2232 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2233 Details : If insertion of an extent fails, then discard the inode
2234 preallocation and free data blocks else it can lead to duplicate
2239 Description: don't always update ctime in ext3_xattr_set_handle()
2240 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2241 In some cases the ctime should not be updated, for example for
2242 2.0->1.8 compatibility it is necessary to delete an xattr and it
2243 should not update the ctime.
2247 Bugzilla : 15713/16362
2248 Description: Assertion in iopen_connect_dentry in 1.6.3
2249 Details : looking up an inode via iopen with the wrong generation number can
2250 populate the dcache with a disconneced dentry while the inode
2251 number is in the process of being reallocated. This causes an
2252 assertion failure in iopen since the inode's dentry list contains
2253 both a connected and disconnected dentry.
2257 Description: assertion failure in ldlm_handle2lock()
2258 Details : fix a race between class_handle_unhash() and class_handle2object()
2259 introduced in lustre 1.6.5 by bug 13622.
2264 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2265 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2270 Description: oops in sd_iostats_seq_show()
2271 Details : unloading/reloading the scsi low level driver triggers a kernel
2272 bug when trying to access the sd iostat file.
2277 Description: Kernel panics during QLogic driver reload
2278 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2279 patch, causing memory corruption.
2284 Description: journal_dev option does not work in b1_6
2285 Details : pass mount option during pre-mount.
2287 Severity : enhancement
2289 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2290 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2291 extent information of a file. It can be used to map logical blocks
2292 in a file to physical blocks in the block device.
2296 Description: LDLM soft lockups - improvement
2297 Details : It is be possible to send the lock handle along with each read
2298 or write request because the client is already doing a lock match
2299 itself so there isn't any reason the OST should have to re-do that
2303 Frequency : only on Cray X2
2305 Description: X2 build failures
2306 Details : fix build failures on Cray X2.
2310 Description: xid & resent requests
2311 Details : Initialize RPC XID from clock at startup (randomly if clock is
2314 Severity : enhancement
2316 Description: Add lustre_start utility to start or stop multiple Lustre servers
2321 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2322 Details : In case of memory pressure, list_del() can be called twice on
2323 req->rq_history_list, causing a kernel oops.
2327 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2328 Details : fix stack overflow in the distributed lock manager by defering
2329 export eviction after a failed AST to the elt thread instead of
2330 handling it in the dlm interpret routine.
2334 Description: Convert some comments to new format.
2335 Details : Update documenting comments to match doxygen conventions.
2339 Description: Grammar fixes.
2340 Details : A couple of trivial spelling fixes.
2344 Description: OSD_COUNTERS-mandatory
2345 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2346 to simplify the code.
2350 Description: simplify cmm_device freeing logic.
2351 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2355 Description: Add lockdep support to dt_object_operations locking interface.
2356 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2357 parameter indicating lock ordering. Update mdd code to use new
2362 Description: Introduce failloc constants for lockless IO tests.
2363 Details : Add two new failloc constants to test lockless IO. Only one of
2364 them in implemented---another is checked in yet to be landed
2369 Description: Add lockdep support for inode mutex.
2370 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2371 in the situations where Lustre has to lock more than one inode
2376 Description: Add optional invariants checking support.
2377 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2378 configure switch. This macro is to be used for consistency and
2379 sanity checks that are too expensive to be left in `production'
2384 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2385 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2390 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2391 Details : Use spin_lock_nested() in (the only) situation where more than
2392 one ldlm_lock is locked simultaneously. Also, fix possible
2393 dead-lock in ldlm_lock_change_resource() by enforcing particular
2398 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2399 Details : Instead of specifying each ldlm_lock call-back through separate
2400 parameter, wrap them into struct ldlm_callback_suite.
2404 Description: Kill join_lru obd method and its callers.
2405 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2406 in memory---a requirement implemented through ->o_join_lru() obd
2407 method in HEAD. Remove this method and its users.
2411 Description: Add asynchronous ldlm ENQUEUE completion handler.
2412 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2413 case that stock ldlm_completion_ast() cannot handle as it waits
2414 until lock is granted. Introduce new ldlm_completion_ast_async()
2415 for this. Also comment ldlm_completion_ast().
2419 Description: ldlm_error <-> errno conversion.
2420 Details : Add functions to map (rather arbitrary) between LDLM error codes
2421 and standard errno values. CLIO needs this to prevent LDLM specific
2422 constants from escaping ldlm and osc.
2426 Description: Kill unused ldlm_handle2lock_ns() function.
2427 Details : Kill unused ldlm_handle2lock_ns() function.
2431 Description: Add lu_ref support to ldlm_lock
2432 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2433 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2434 and ldlm_resource. LDLM interface has to be changed, because code that
2435 releases a reference on a lock, has to "know" what reference this is.
2436 In the most frequent case
2438 lock = ldlm_handle2lock(handle);
2440 LDLM_LOCK_PUT(lock);
2442 no changes are required. When any other reference (received _not_ from
2443 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2444 instead of LDLM_LOCK_PUT().
2446 Arguably, changes are pervasive, and interface requires some discipline
2447 for proper use. On the other hand, it was very instrumental in finding
2448 a few leaked lock references.
2452 Description: Add ldlm_lock_addref_try().
2453 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2454 attempts to addref a lock that might be being canceled
2459 Description: Add ldlm_weigh_callback().
2460 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2461 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2462 hard-coded `number of pages' logic.
2466 Description: Add lockdep annotations to llog code.
2467 Details : Use appropriately tagged _nested() locking calls in the places
2468 where llog takes more than one ->lgh_lock lock.
2472 Description: Add loi_kms_set().
2473 Details : Wrap kms updates into a helper function.
2477 Description: Constify instances of struct lsm_operations.
2478 Details : Constify instances of struct lsm_operations.
2482 Description: lu_conf support.
2483 Details : On a server, a file system object is uniquely identified
2484 by a fid, which is sufficient to locate and load all object
2485 state (inode). On a client, on the other hand, more data are
2486 necessary instantiate an object. Change lu_object_find() and
2487 friends to take additional `lu_conf' argument describing object.
2488 Typically this includes layout information.
2492 Description: lu_context fixes.
2493 Details : Introduce new lu_context functions that are needed on the client
2494 side, where some system threads (ptlrpcd) are shared by multiple
2495 modules, and so cannot be stopped during module shutdown.
2499 Description: Add start and stop methods to lu_device_type_operations.
2500 Details : Introduce two new methods in lu_device_type_operations, that are
2501 invoked when first instance of a given type is created and last one
2502 is destroyed respectively. This is need by CLIO.
2506 Description: Add lu_ref support to struct lu_device.
2507 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2508 track leaked references.
2512 Description: Introduce lu_kmem_descr.
2513 Details : lu_kmem_descr and its companion interface allow to create
2514 and destroy a number of kmem caches at once.
2518 Description: Fix lu_object finalization race.
2519 Details : Fix a race between lu_object_find() finding an object and its
2520 concurrent finalization. This race is (most likely) not possible
2521 on the server, but might happen on the client.
2525 Description: Introduce lu_ref interface.
2526 Details : lu_ref is a debugging module allowing to track references to
2527 a given object. It is quite cpu expensive, and has to be
2528 explicitly enabled with --enable-lu_ref. See usage description
2533 Description: Factor lu_site procfs stats into a separate function.
2534 Details : Separate lu_site stats printing code into a separate function
2535 that can be reused on a client.
2539 Description: Constify instances of struct {lu,dt,md}_device_operations.
2540 Details : Constify instances of struct {lu,dt,md}_device_operations.
2544 Description: Introduce struct md_site and move meta-data specific parts of
2545 struct lu_site here.
2546 Details : Move md-specific fields out of struct lu_site into special struct
2547 md_site, so that lu_site can be used on a client.
2551 Description: Kill mdd_lov_destroy().
2552 Details : Remove unused mdd code.
2556 Description: Add st_block checking to multistat.c.
2557 Details : Add st_block checking to multistat.c.
2561 Description: Add lu_ref support to struct obd_device.
2562 Details : Add lu_ref tracking to obd_device.
2566 Description: Kill obd_set_fail_loc().
2567 Details : Remove unused code.
2571 Description: Add special type for ptlrpc_request interpret functions.
2572 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2573 there. Actual usage will be in CLIO.
2577 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2578 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2579 doesn't work with lockdep.
2583 Description: Add rwv.c test program.
2584 Details : New testing program exercising readv(2) and writev(2) (Qian).
2588 Description: Add sendfile.c test program.
2589 Details : New testing program exercising sendfile(2) (Jay).
2593 Description: Ratelimit a message that can be very frequent.
2594 Details : Ratelimit a memory allocation failure message that can
2599 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2600 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2604 Description: Liblustre build fixes.
2605 Details : Liblustre build fixes.
2609 Description: libcfs: add cfs_{need,cond}_resched() interface.
2610 Details : libcfs: add cfs_{need,cond}_resched() definition and
2611 implementations for Linux, NT, and liblustre.
2613 Severity : enhancement
2615 Description: More exported tunables for mballoc
2616 Details : Add support for tunable preallocation window and new tunables for
2617 large/small requests
2621 Description: Detect corruption of block bitmap and checking for preallocations
2622 Details : Checks validity of on-disk block bitmap. Also it does better
2623 checking of number of applied preallocations. When corruption is
2624 found, it turns filesystem readonly to prevent further corruptions.
2628 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2629 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2630 window to 0. If it does hit cache miss, and read-pattern is still
2631 stride-io mode, does not reset the stride window, but also does not
2632 increase the stride window length in this case.
2636 Frequency : only for big-endian servers
2637 Description: Check if system is big-endian while mounting fs with extents feature
2638 Details : Mounting a filesystem with extents feature will fail on big-endian
2639 systems since ext3-based ldiskfs is not supported on big-endian
2640 systems. This can be over-riden with "bigendian_extents" mount option.
2642 Severity : enhancement
2644 Description: The root squash functionality
2645 Details : A security feature, which is to prevent users from being able
2646 to mount lustre on their desktop, run as root, and delete
2647 all of the files in the filesystem. The goal is accomplished by
2648 remapping user id (UID) and group id (GID) of the root user to
2649 a UID and GID specified by the system administartor via Lustre
2650 configuration management server (MGS). The functionality also
2651 allows to specify sets of clients for which the remapping does
2656 Description: Excessive recovery window
2657 Details : With AT enabled, the recovery window can be excessively long (6000+
2658 seconds). To address this problem, we no longer use
2659 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2660 timeout no longer depends on the service time, it is set to
2661 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2662 time via pb_service_time.
2666 Description: Watchdog triggered on MDS failover
2667 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2668 the OSTs know that the MDS "UUID" can be reused for the same export
2669 from a different NID, so we do not need to wait for the export to be
2673 Frequency : rare, only if using MMP with Linux RAID
2675 Description: MMP doesn't work with Linux RAID
2676 Details : While using HA for Lustre servers with Linux RAID, it is possible
2677 that MMP will not detect multiple mounts. To make this work we
2678 need to unplug the device queue in RAID when the MMP block is being
2679 written. Also while reading the MMP block, we should read it from
2680 disk and not the cached one.
2682 Severity : enhancement
2684 Description: open file using fid
2685 Details : A file can be opened using just its fid, like
2686 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2689 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2692 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2693 Details : add proper locking for creation of jbd_4k slab cache
2697 Description: MMP check in ext3_remount() fails without displaying any error
2698 Details : When multiple mount protection fails during remount, proper error
2701 Severity : enhancement
2703 Description: Allow stripe size to be up to 4G-64k
2704 Details : Fix math logic to allow large stripe sizes.
2708 Description: add check for >8TB ldiskfs filesystems
2709 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2710 Don't allow >8TB ldiskfs filesystems to be mounted without
2711 force_over_8tb mount option
2716 Descriptoin: OSS complains "too many blocks" and crashes
2717 Details : In filter_commitrw_write():
2718 1. lquota_chkquota();
2719 2. obdo_from_inode();
2720 3. lquota_pending_commit();
2721 "2." has changed uid and gid in this case, then caused
2722 lquota_chkquota() and lquota_pending_commit() to use
2723 different uid and gid. That is the root of the bug.
2727 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2728 Details : Detect and print out the 'stripe count = -1' case properly.
2732 Description: Out or order replies might be lost on replay
2733 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2734 request with tid smaller than one currently being added, add it
2735 to the start, not end of the list.
2737 --------------------------------------------------------------------------------
2739 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2741 * Support for kernels:
2742 2.6.5-7.283 (SLES 9),
2743 2.6.9-55.EL (RHEL 4),
2744 2.6.16.46-0.14 (SLES 10),
2745 2.6.18.8 vanilla (kernel.org)
2746 * Client support for unpatched kernels:
2747 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2748 2.6.16 - 2.6.22 vanilla (kernel.org)
2749 * Due to recently discovered recovery problems, we do not recommend
2750 using patchless RHEL 4 clients with this or any earlier release.
2751 * Recommended e2fsprogs version: 1.39.cfs8
2752 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2753 * Starting with this release, the ldiskfs backing filesystem required
2754 by Lustre is now in its own package, lustre-ldiskfs. This package
2755 should be installed. It is versioned separately from Lustre and
2756 may be released separately in future.
2760 Description: block reactivating mgc import until all deactivates complete
2761 Details : Fix race when failing back MDT/MGS to itself (testing)
2764 Frequency : at statup only
2766 Description: mds_lov_synchronize race leads to various problems
2767 Details : simultaneous MDT->OST connections at startup can cause the
2768 sync to abort, leaving the OSC in a bad state.
2770 Severity : enhancement
2772 Description: add optional extra BUILD_VERSION info
2773 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2774 to override the lustre version.
2777 Frequency : 2.6.18 servers only
2779 Description: ll_kern_mount() doesn't release the module reference
2780 Details : The ldiskfs module reference count never drops down to 0
2781 because ll_kern_mount() doesn't release the module reference.
2786 Description: server LBUG when using old ost_num_threads parameter
2787 Details : Accept the old ost_num_threads parameter but warn that it
2788 is deprecated, and fix an off-by-one error that caused an LBUG.
2793 Description: Transient SCSI error results in persistent IO issue
2794 Details : iobuf->dr_error is not reinitialized to 0 between two
2798 Frequency : sometimes when underlying device returns I/O errors
2800 Description: OSTs not going read-only during write failures
2801 Details : OSTs are not remounted read-only when the journal commit threads
2802 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2803 instead of the ext3 wrappers.
2807 Description: poor connect scaling with increasing client count
2808 Details : Don't run filter_grant_sanity_check for more than 100 exports
2809 to improve scaling for large numbers of clients.
2812 Frequency : SLES10 only
2814 Description: sanity-quota.sh quotacheck failed: rc = -22
2815 Details : Quotas cannot be enabled on SLES10.
2818 Frequency : liblustre clients only
2820 Description: getdirentries does not give error when run on compute nodes
2821 Details : getdirentries does not fail when the size specified as an argument
2822 is too small to contain at least one entry
2824 Severity : enhancement
2826 Description: Add LNET router traceability for debug purposes
2827 Details : If a checksum failure occurs with a router as part of the
2828 IO path, the NID of the last router that forwarded the bulk data
2829 is printed so it can be identified.
2834 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2835 Details : Due to a race condition, liblustre clients were occasionally
2836 evicted incorrectly.
2838 Severity : enhancement
2840 Description: lfs setstripe use optional parameters instead of postional
2843 Severity : enhancement
2845 Description: Nanosecond timestamp support for ldiskfs
2846 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2847 resolution timestamps. There is not yet support for this at
2848 the Lustre filesystem level.
2851 Frequency : during server recovery
2853 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2854 Details : request with rq_no_resend flag not awake l_wait_event if they get
2858 Frequency : nfs export on patchless client
2860 Description: connectathon hang when test nfs export over patchless client
2861 Details : Disconnected dentry cannot be found with lookup, so we do not need
2862 to unhash it or make it invalid
2865 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2866 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2867 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2872 Description: open req refcounting wrong on reconnect
2873 Details : If reconnect happened between getting open reply from server and
2874 call to mdc_set_replay_data in ll_file_open, we will schedule
2875 replay for unreferenced request that we are about to free.
2876 Subsequent close will crash in variety of ways.
2877 Check that request is still eligible for replay in
2878 mdc_set_replay_data().
2883 Description: disable writes to filesystem when reading health_check file
2884 Details : the default for reading the health_check proc file has changed
2885 to NOT do a journal transaction and write to disk, because this
2886 can cause reads of the /proc file to hang and block HA state
2887 checking on a healthy but otherwise heavily loaded system. It
2888 is possible to return to the previous behaviour during configure
2889 with --enable-health-write.
2891 Severity : enhancement
2893 Description: 64-bit inode version
2894 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2895 to the inode. This will be required for version-based recovery.
2900 Description: MDS fails to start if a duplicate client export is detected
2901 Details : in some rare cases it was possible for a client to connect to
2902 an MDS multiple times. Upon recovery the MDS would detect this
2903 and fail during startup. Handle this more gracefully.
2905 Severity : enhancement
2907 Description: Add -o localflock option to simulate old noflock
2909 Details : This will achieve local-only flock/fcntl locks
2915 Description: log_commit_thread vs filter_destroy race leads to crash
2916 Details : Take import reference before releasing llog record semaphore
2921 Description: Wrong request locking in request set processing
2922 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2923 imp_delayed_list, in this place should be used imp_lock.
2926 Frequency : when reconnection
2928 Description: Grant Leak when osc reconnect to OST
2929 Details : When osc reconnect ost, OST(filter) should check whether it
2930 should grant more space to client by comparing fed_grant and
2931 cl_avail_grant, and return the granted space to client instead
2932 of "new granted" space, because client will call osc_init_grant
2933 to update the client grant space info.
2936 Frequency : when client reconnect to OST
2938 Description: Grant Leak when osc do resend and replay bulk write
2939 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2940 bulk write request, because the grant info while be sync between
2941 OSC and OST when reconnect, and we should ignore the grant info
2942 these of resend/replay write req.
2947 Description: Grant space more than available left space sometimes.
2948 Details : When then OST is about to be full, if two bulk writing from
2949 different clients came to OST. Accord the avaliable space of the
2950 OST, the first req should be permitted, and the second one
2951 should be denied by ENOSPC. But if the seconde arrived before
2952 the first one is commited. The OST might wrongly permit second
2953 writing, which will cause grant space > available space.
2956 Frequency : when client is evicted
2958 Description: Grant might be wrongly erased when osc is evicted by OST
2959 Details : when the import is evicted by server, it will fork another
2960 thread ptlrpc_invalidate_import_thread to invalidate the
2961 import, where the grant will be set to 0. While the original
2962 thread will update the grant it got when connecting. So if
2963 the former happened latter, the grant will be wrongly errased
2964 because of this race.
2969 Description: Checking Stale with correct fid
2970 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
2971 to check whether it is stale, because sometimes, we want the
2972 enqueue happened anyway, and op_data.fid2 will not be initialized.
2974 Severity : enhancement
2976 Description: update patchless client
2977 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
2980 Frequency : only with 2.4 kernel
2982 Description: random memory corruption
2983 Details : size of struct ll_inode_info is to big for union inode.u and this
2984 can be cause of random memory corruption.
2989 Description: Memory leak in recovery
2990 Details : Lov_mds_md was not free in an error handler in mds_create_object.
2991 It should also check obd_fail before fsfilt_start, otherwise if
2992 fsfilt_start return -EROFS,(failover mds during mds recovery).
2993 then the req will return with repmsg->transno = 0 and rc = EROFS.
2994 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
2995 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
2996 be freed no matter whether fsfilt_commit success or not.
2999 Frequency : only with huge count clients
3001 Description: Prevents from taking the superblock lock in llap_from_page for
3003 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
3004 for llap_from_page call in ll_removepage prevents from taking the
3005 superblock lock for a soon died page.
3010 Description: Not check open intent error before release open handle
3011 Details : in some rare cases, the open intent error is not checked before
3012 release open handle, which may cause
3013 ASSERTION(open_req->rq_transno != 0), because it tries to release
3014 the failed open handle.
3019 Description: Set cat log bitmap only after create log success.
3020 Details : in some rare cases, the cat log bitmap is set too early. and it
3021 should be set only after create log success.
3025 Description: Accessing a block bevice can re-enable I/O when Lustre is
3026 tearing down a device.
3027 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3032 Description: service threads may hog cpus when there are a lot of requests
3033 Details : Insert cond_resched to give other threads a chance to use some CPU
3038 Description: the cat log was not initialized in recovery
3039 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3040 unlink log on mds will not be initialized until mds post
3041 recovery. And also in mds post recovery, the unlink log will
3042 initialization will be done asynchronausly, so there will be race
3043 between add unlink log and unlink log initialization.
3047 Description: brw_stats were being printed incorrectly
3048 Details : brw_stats were being printed as log2 but all of them were not
3049 recorded as log2. Also remove some code duplication arising from
3050 filter_tally_{read,write}.
3054 Frequency : rare, only in recovery.
3055 Description: ASSERTION(req->rq_type != LI_POISON) failed
3056 Details : imp_lock should be held while iterating over imp_sending_list for
3057 prevent destroy request after get timeout in ptlrpc_queue_wait.
3061 Description: replay-single.sh test 52 fails
3062 Details : A lock's skiplist need to be cleanup when it being unlinked
3063 from its resource list.
3067 Description: Short directio read returns full requested size rather than
3069 Details : Direct I/O operations should return actual amount of bytes
3070 transferred rather than requested size.
3072 Severity : enhancement
3074 Description: metadata RPC reduction (e.g. for rm performance)
3075 Details : decrease the amount of synchronous RPC between clients and servers
3076 by canceling conflicing lock before the operation on the client
3077 and packing thier handles into the main operation RPC to server.
3079 Severity : enhancement
3081 Description: Async OSC create to avoid the blocking unnecessarily.
3082 Details : If an OST has no remaining object, system will block on the
3083 creation when it needs to create a new object on this OST. Now,
3084 ways use pre-created objects when available, instead of blocking on
3085 an empty osc while others are not empty. If we must block, we
3086 block for the shortest possible period of time.
3090 Description: improve handling recoverable errors
3091 Details : if request processig with error which can be recoverable on server
3092 request should be resend, otherwise page released from cache and
3095 Severity : enhancement
3097 Description: refine locking for avoid write wrong info into lov_objid file
3098 Details : fix possible races with add new target and write/update data in
3101 --------------------------------------------------------------------------------
3103 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3108 Frequency : on some architectures
3110 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3111 Details : Uninitialized flags sometimes cause configuration commands to
3115 Frequency : patchless clients only
3117 Description: missing __iget() symbol export
3118 Details : The __iget() symbol export is missing. To avoid the need for
3119 this on patchless clients the deathrow inode reaper is turned
3120 off, and we depend on the VM to clean up old inodes. This
3121 dependency was during via the fix for bug 12181.
3123 --------------------------------------------------------------------------------
3125 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3127 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3128 INTEROPERATE with older versions automatically. In many cases a
3129 special upgrade step is needed. Please read the
3130 user documentation before upgrading any part of a live system.
3131 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3132 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3133 * WARNING: Lustre configuration and startup changes are required with
3134 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3138 Severity : enhancement
3140 Description: MountConf
3141 Details : Lustre configuration is now managed via mkfs and mount
3142 commands instead of lmc and lconf. New obd types (MGS, MGC)
3143 are added for dynamic configuration management. See
3144 https://mail.clusterfs.com/wikis/lustre/MountConf for
3147 Severity : enhancement
3149 Description: dynamic OST addition
3150 Details : OSTs can now be added to a live filesystem
3152 Severity : enhancement
3154 Description: startup order invariance
3155 Details : MDTs and OSTs can be started in any order. Clients only
3156 require the MDT to complete startup.
3158 Severity : enhancement
3160 Description: parallel, asynchronous orphan cleanup
3161 Details : orphan cleanup is now performed in separate threads for each
3162 OST, allowing parallel non-blocking operation.
3164 Severity : enhancement
3166 Description: optimized stripe assignment
3167 Details : stripe assignments are now made based on ost space available,
3168 ost previous usage, and OSS previous usage, in order to try
3169 to optimize storage space and networking resources.
3171 Severity : enhancement
3173 Description: Permanently set tunables
3174 Details : All writable /proc/fs/lustre tunables can now be permanently
3175 set on a per-server basis, at mkfs time or on a live system.
3177 Severity : enhancement
3179 Description: Lustre message v2
3180 Details : Add lustre message format v2.
3182 Severity : enhancement
3184 Description: client OST exclusion list
3185 Details : Clients can be started with a list of OSTs that should be
3186 declared "inactive" for known non-responsive OSTs.
3190 Description: SPEC SFS validation failure on NFS v2 over lustre.
3191 Details : Changes the blocksize for regular files to be 2x RPC size,
3192 and not depend on stripe size.
3194 Severity : enhancement
3196 Description: Multiple MD RPCs in flight.
3197 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3198 To avoid overly-overloading MDS, introduce a limit on number of
3199 MDS RPCs in flight for a single client and add /proc controls
3200 to adjust this limit.
3202 Severity : enhancement
3204 Description: client read/write statistics
3205 Details : Add client read/write call usage stats for performance
3206 analysis of user processes.
3207 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3208 file access. extents_stats shows chunk size distribution.
3209 extents_stats_per_process show chunk size distribution per
3212 Severity : enhancement
3214 Description: mds statistics
3215 Details : Add detailed mds operations statistics in
3216 /proc/fs/lustre/mds/*/stats.
3220 Description: Failure of copying files with lustre special EAs.
3221 Details : Client side always return success for setxattr call for lustre
3222 special xattr (currently only "trusted.lov").
3227 Description: Refcount LNET uuids
3228 Details : The global LNET uuid list grew linearly with every startup;
3229 refcount repeated list entries instead of always adding to
3232 Severity : enhancement
3234 Description: Dynamic service threads
3235 Details : Within a small range, start extra service threads
3236 automatically when the request queue builds up.
3239 Frequency : mixed-endian client/server environments
3241 Description: mixed-endian crashes
3242 Details : The new msg_v2 system had some failures in mixed-endian
3245 Severity : enhancement
3247 Description: Easy OST removal
3248 Details : OSTs can be permanently deactivated with e.g. 'lctl
3249 conf_param lustre-OST0001.osc.active=0'
3251 Severity : enhancement
3253 Description: MGS proc entries
3254 Details : Added basic proc entries for the MGS showing what filesystems
3257 Severity : enhancement
3259 Description: provide MGS failover
3260 Details : Added config lock reacquisition after MGS server failover.
3262 Severity : enhancement
3264 Description: add Linux 2.4 support
3265 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3269 Description: a large application tries to do I/O to the same resource and dies
3270 in the middle of it.
3271 Details : Check the req->rq_arrival time after the call to
3272 ost_brw_lock_get(), but before we do anything about
3273 processing it & sending the BULK transfer request. This
3274 should help move old stale pending locks off the queue as
3275 quickly as obd_timeout.
3278 Frequency : when an incorrect nid is specified during startup
3280 Description: ptlrpc connect to non-existant node causes kernel crash
3281 Details : LNET can't be re-entered from an event callback, which
3282 happened when we expire a message after the export has been
3283 cleaned up. Instead, hand the zombie cleanup off to another
3286 Severity : enhancement
3288 Description: plain/inodebits lock performance improvement
3289 Details : Grouping plain/inodebits in granted list by their request modes
3290 and bits policy, thus improving the performance of search through
3294 Frequency : only if OST filesystem is corrupted
3296 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3297 Details : for a short time RPCs with bulk IO are in the replay list,
3298 but replay of bulk IOs is unimplemented. If the OST filesystem
3299 is corrupted due to disk cache incoherency and then replay is
3300 started it is possible to trip an assertion. Avoid putting
3301 committed RPCs into the replay list at all to avoid this issue.
3304 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3306 Description: System hang on startup
3307 Details : This bug allowed the liblustre (e.g. catamount) client to
3308 return to the app before handling all startup RPCs. This
3309 could leave the node unresponsive to lustre network traffic
3310 and manifested as a server ptllnd timeout.
3312 Severity : enhancement
3314 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3315 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3316 boolean to control whether to print peer debug info when a
3317 client's RPC times out.
3320 Frequency : only for kernels with patches from Lustre below 1.4.3
3322 Description: Remove old rdonly API
3323 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3326 Frequency : only for devices with external journals
3328 Description: Set external device read-only also
3329 Details : During a commanded failover stop, we set the disk device
3330 read-only while the server shuts down. We now also set any
3331 external journal device read-only at the same time.
3334 Frequency : when upgrading from 1.4 while trying to change parameters
3336 Description: The wrong (new) MDC name was used when setting parameters for
3337 upgraded MDT's. Also allows changing of OSC (and MDC)
3338 parameters if --writeconf is specified at tunefs upgrade time.
3341 Frequency : when setting specific ost indicies
3343 Description: QOS code breaks on skipped indicies
3344 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3345 created with --index need not be sequential.
3347 Severity : enhancement
3349 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3350 Details : The uninit_groups feature works in conjunction with the kernel
3351 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3352 up the pass1 processing of e2fsck. This is a read-only feature
3353 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3354 mount filesystems that have had this feature enabled.
3356 Severity : enhancement
3358 Description: Improve multi-block allocation algorithm to avoid fragmentation
3359 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3360 allocation locality and avoid filesystem fragmentation.
3362 ------------------------------------------------------------------------------
3364 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3366 * Support for kernels:
3367 2.4.21-47.0.1.EL (RHEL 3)
3368 2.6.5-7.283 (SLES 9)
3369 2.6.9-42.0.10.EL (RHEL 4)
3370 2.6.12.6 vanilla (kernel.org)
3371 2.6.16.27-0.9 (SLES 10)
3372 * Recommended e2fsprogs version: 1.39.cfs5
3374 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3378 Frequency : occasional, depends on client load and configuration
3379 Bugzilla : 12181, 12203
3380 Description: data loss for recently-modified files
3382 Details : In some cases it is possible that recently written or created
3383 files may not be written to disk in a timely manner (this should
3384 normally be within 30s unless client IO load is very high).
3385 The problem appears as zero-length files or files that are a
3386 multiple of 1MB in size after a client crash or client eviction
3387 that are missing data at the end of the file.
3389 This problem is more likely to be hit on clients where files are
3390 repeatedly created and unlinked in the same directory, clients
3391 have a large amount of RAM, have many CPUs, the filesystem has
3392 many OSTs, the clients are rebooted frequently, and/or the files
3393 are not accessed by other nodes after being written.
3395 The presence of the problem can be detected by looking at
3396 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3397 smaller than the second (nr_unused) then dirty files will not
3398 be flushed automatically to disk. "sync; sleep 10" should be
3399 run several times on the node before unmounting it to update
3400 Lustre (this is also safe to run on nodes without this problem).
3402 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3403 that can cause this same problem, so customers using that kernel
3404 also need to update the kernel in addition to Lustre. In order
3405 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3407 It is normal that files written just before a client crash (less
3408 than 30s) may not yet have been flushed to disk, even for local
3412 Frequency : frequent on thin XT3 nodes
3414 Description: UUID collision on thin XT3 Linux nodes
3415 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3416 randomly, since we relied on an insufficiently-seeded PRNG.
3421 Description: OSS hangs after "All ost request buffers busy"
3422 Details : A deadlock between quota and journal operations caused OSS
3423 hangs after printing "All ost request buffers busy."
3426 Frequency : always on liblustre builds
3428 Description: Cleanup compiler warnings on liblustre
3431 Frequency : always on liblustre builds on XT3
3433 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3437 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3438 > 32000 subdirectories
3439 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3440 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3441 subdirectory count crosses 32000. This will aid e2fsck to
3442 correctly handle more than 32000 subdirectories.
3445 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3447 Description: System hang on startup
3448 Details : This bug allowed the liblustre (e.g. catamount) client to
3449 return to the app before handling all startup RPCs. This
3450 could leave the node unresponsive to lustre network traffic
3451 and manifested as a server ptllnd timeout.
3453 Severity : enhancement
3455 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3456 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3457 boolean to control whether to print peer debug info when a
3458 client's RPC times out.
3463 Description: make O_SYNC working on 2.6 kernels
3464 Details : 2.6 kernels use different method for mark pages for write,
3465 so need add a code to lustre for O_SYNC work.
3470 Description: Failure to close file and release space on NFS
3471 Details : Put inode details into lock acquired in ll_intent_file_open.
3472 Use mdc_intent_lock in ll_intent_open to properly
3473 detect all kind of errors unhandled by mdc_enqueue.
3478 Description: proc file read during shutdown sometimes raced obd removal,
3480 Details : Add lock to prevent obd access after proc file removal.
3483 Frequency : Only for files larger than 4GB on 32-bit clients.
3485 Description: improperly doing page alignment of locks
3486 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3487 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3492 Description: RPCs being resent when they shouldn't be
3493 Details : Some RPCs that should not be resent are being resent. This
3494 can cause inconsistencies in the RPC state machine. Do not
3495 resend such requests.
3498 Frequency : rare, only with NFS export
3500 Description: Crash on NFS re-export node
3501 Details : under very unusual load conditions an assertion is hit in
3502 ll_intent_file_open()
3505 Frequency : only if OST filesystem is corrupted
3507 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3508 Details : for a short time RPCs with bulk IO are in the replay list,
3509 but replay of bulk IOs is unimplemented. If the OST filesystem
3510 is corrupted due to disk cache incoherency and then replay is
3511 started it is possible to trip an assertion. Avoid putting
3512 committed RPCs into the replay list at all to avoid this issue.
3517 Description: large O_DIRECT requests fail under memory pressure/fragmentation
3518 Details : Large single O_DIRECT read and write calls can fail to allocate
3519 a sufficiently large buffer to process the request. In case of
3520 allocation failure the allocation is retried with a smaller
3521 buffer and broken into smaller requests.
3523 Severity : enhancement
3525 Description: Add -o localflock option to simulate old noflock behaviour.
3526 Details : This will achieve local-only flock/fcntl locks coherentness.
3531 Description: versioning check is incomplete
3532 Details : Checking the version difference of client vs. server, report
3533 error if the gap is too big.
3538 Description: add support PG_writeback bit
3539 Details : add support for PG_writeback bit for Lustre, for more carefull
3540 work with page cache in 2.6 kernel. This also fix some deadlocks
3541 and remove hack for work O_SYNC with 2.6 kernel.
3543 Severity : enhancement
3545 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3546 Details : The uninit_groups feature works in conjunction with the kernel
3547 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3548 up the pass1 processing of e2fsck. This is a read-only feature
3549 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3550 mount filesystems that have had this feature enabled.
3552 Severity : enhancement
3554 Description: Improve multi-block allocation algorithm to avoid fragmentation
3555 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3556 allocation locality and avoid filesystem fragmentation.
git://git.whamcloud.com / fs / lustre-release.git / blob