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 2.6.32-573.8.1.el6 (RHEL6.7)
9 3.10.0-327.3.1.el7 (RHEL7.2)
10 3.0.101-0.47.67 (SLES11 SP3)
11 3.0.101-65 (SLES11 SP4)
12 vanilla linux 4.2.1 (ZFS only)
13 * Client known to build on unpatched kernels:
14 2.6.32-431.29.2.el6 (RHEL6.5)
15 2.6.32-504.30.3.el6 (RHEL6.6)
16 2.6.32-573.8.1.el6 (RHEL6.7)
17 3.10.0-327.3.1.el7 (RHEL7.2)
18 3.0.101-0.47.67 (SLES11 SP3)
19 3.0.101-65 (SLES11 SP4)
22 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
23 * Recommended ZFS / SPL version: 0.6.5.3
24 * Tested with ZFS / SPL version: 0.6.5.3
25 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
26 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
27 stack overflow. For more information, please refer to bugzilla 17630.
28 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
29 the re-exporting nodes to be mounted with "32bitapi" mount option
31 --------------------------------------------------------------------------------
33 03-10-2015 Intel Corporation
35 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
36 for currently supported client and server kernel versions.
37 * Server known to build on patched kernels:
38 2.6.32-431.29.2.el6 (RHEL6.5)
39 2.6.32-504.8.1.el6 (RHEL6.6)
40 3.0.101-0.46 (SLES11 SP3)
41 * Client known to build on unpatched kernels:
42 2.6.32-431.29.2.el6 (RHEL6.5)
43 2.6.32-504.8.1.el6 (RHEL6.6)
44 3.10.0-123.20.1.el7 (RHEL7)
45 3.0.101-0.46 (SLES11 SP3)
46 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
47 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
48 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
49 stack overflow. For more information, please refer to bugzilla 17630.
50 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
51 the re-exporting nodes to be mounted with "32bitapi" mount option
53 Severity : enhancement
55 Description: control OST-index in IDIF via ROCOMPAT flag.
56 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
57 last_rcvd file. For new formatted OST device, it will be auto set;
58 for the case of upgrading from old OST device, you can enable it
59 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
60 enabled, for new created OST-object, its IDIF-in-LMA will contain
61 the OST-index; for the existing OST-object, the OSD will convert
62 old format IDIF as new format IDIF with OST-index stored in the
63 LMA EA when accessing such OST-object or via OI scrub. Once such
64 flag is enabled, it cannot be reverted back, so the system cannot
65 be downgraded to the orignal incompatible version.
67 --------------------------------------------------------------------------------
69 07-30-2014 Intel Corporation
71 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
72 for currently supported client and server kernel versions.
73 * Server known to build on patched kernels:
74 2.6.32-431.20.3.el6 (RHEL6.5)
75 3.0.101-0.31 (SLES11 SP3)
76 * Client known to build on unpatched kernels:
77 2.6.32-431.20.3.el6 (RHEL6.5)
78 3.0.101-0.31 (SLES11 SP3)
81 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
82 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
83 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
84 stack overflow. For more information, please refer to bugzilla 17630.
85 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
86 the re-exporting nodes to be mounted with "32bitapi" mount option
88 --------------------------------------------------------------------------------
90 10-31-2013 Intel Corporation
92 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
93 * Server builds for kernels:
94 2.6.32-358.18.1.el6 (RHEL6.4)
95 * Client builds for unpatched kernels:
96 2.6.32-358.18.1.el6 (RHEL6.4)
97 3.0.92-0.8 (SLES11 SP3)
99 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
100 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
101 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
102 stack overflow. For more information, please refer to bugzilla 17630.
103 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
104 the re-exporting nodes to be mounted with "32bitapi" mount option
106 --------------------------------------------------------------------------------
108 05-30-2013 Intel Corporation
110 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
111 * Server builds for kernels:
112 2.6.32-358.6.2.el6 (RHEL6.4)
113 * Client builds for unpatched kernels:
114 2.6.32-358.6.2.el6 (RHEL6.4)
115 3.0.74-0.6.6 (SLES11 SP2)
117 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
118 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
119 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
120 stack overflow. For more information, please refer to bugzilla 17630.
121 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
122 the re-exporting nodes to be mounted with "32bitapi" mount option
124 --------------------------------------------------------------------------------
126 9-30-2012 Whamcloud, Inc.
128 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
129 * Server support for kernels:
130 2.6.32-279.5.1.el6 (RHEL6)
131 * Client support for unpatched kernels:
132 2.6.32-279.5.1.el6 (RHEL6)
134 2.6.18-238.19.1.el5 (RHEL5)
135 2.6.16.60-0.69.1 (SLES10)
136 * Recommended e2fsprogs version: 1.41.90.wc4
137 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
138 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
139 stack overflow. For more information, please refer to bugzilla 17630.
140 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
141 the re-exporting nodes to be mounted with "32bitapi" mount option
143 Severity : enhancement
145 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
147 Severity : enhancement
149 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
151 Severity : enhancement
153 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
155 Severity : enhancement
157 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
159 Severity : enhancement
161 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
163 --------------------------------------------------------------------------------
165 04-30-2012 Whamcloud, Inc.
167 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
168 * Server support for kernels:
169 2.6.32-220.4.2.el6 (RHEL6)
170 * Client support for unpatched kernels:
171 2.6.32-220.4.2.el6 (RHEL6)
173 2.6.18-238.19.1.el5 (RHEL5)
174 2.6.16.60-0.69.1 (SLES10)
175 * Recommended e2fsprogs version: 1.41.90.wc4
176 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
177 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
178 stack overflow. For more information, please refer to bugzilla 17630.
179 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
180 the re-exporting nodes to be mounted with "32bitapi" mount option
182 Severity : enhancement
184 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
186 Severity : enhancement
188 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
190 Severity : enhancement
192 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
194 Severity : enhancement
196 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
198 --------------------------------------------------------------------------------
200 09-30-2011 Whamcloud, Inc.
202 * Server support for kernels:
203 2.6.18-238.19.1.el5 (RHEL5)
204 2.6.32-131.6.1.el6 (RHEL6)
205 * Client support for unpatched kernels:
206 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
207 2.6.18-238.19.1.el5 (RHEL5)
208 2.6.32-131.6.1.el6 (RHEL6)
209 2.6.29.4-167.fc11 (FC11)
210 2.6.16.60-0.69.1 (SLES10)
212 * Recommended e2fsprogs version: 1.41.90.wc3
213 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
214 Lustre filesystem with 4K stack may cause a stack overflow. For more
215 information, please refer to bugzilla 17630.
216 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
217 mounted with "32bitapi" mount option
219 Severity : enhancement
220 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
222 Severity : enhancement
223 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
225 Severity : enhancement
226 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
229 Frequency : only with SLES10
231 Description: Use OFED "KMP" provided by Novell
232 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
233 Lustre is now built against this package. That means you need to
234 install the ofed-kmp package from Novell for the patchless client.
235 Note that the ofed-kmp that Novell ships may not exactly match the
236 kernel version but should still be compatible.
238 Severity : enhancement
240 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
241 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
243 --------------------------------------------------------------------------------
245 2010-07-15 Oracle, Inc.
247 * Server support for kernels:
248 2.6.18-164.11.1.el5 (RHEL 5)
249 2.6.18-164.11.1.0.1.el5 (OEL 5)
250 * Client support for unpatched kernels:
251 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
252 2.6.18-164.11.1.el5 (RHEL 5),
253 2.6.18-164.11.1.0.1.el5 (OEL 5)
254 2.6.16.60-0.42.8 (SLES 10),
256 2.6.29.4-167.fc11 (FC11)
257 * Recommended e2fsprogs version: 1.41.10-sun2
259 Severity : enhancement
261 Description: Distribute lfs_migrate script with lustre
262 Details : The lfs_migrate mentioned in the manual is now included in the
263 lustre tree in lustre/scripts and will distributed in lustre RPMs.
265 Severity : enhancement
267 Description: Failover nid list added to import proc file.
269 Severity : enhancement
271 Description: "som_preview" mount option required to use SOM
272 Details : The clients will need to use som_preview mount option
276 Description: Lustre does not do 1MB IOs to HW RAID
277 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
279 Severity : enhancement
281 Description: lfs quota output is not very convenient for awk/sed-parsing
282 Details : Some positions in lfs quota output table could be empty or
283 non-empty which made it hard to parse it with scripts, now
284 a dash is put instead of space where there is not supposed
289 Description: Update to OFED 1.5.1
290 Details : OFED 1.5.1 will be used in environments that don't use
291 vendor supplied OFED.
295 Description: Remove lnet. prefix from lctl params display
296 Details : Also renamed lnet.memused to lnet_memused to
301 Description: Use conf_param -d to remove permanant settings.
305 Description: Add list_param -R
306 Details : lctl list_param now supports recursive mode.
309 Bugzilla : 21829, 22312
310 Description: Fix llobdstat.
311 Details : 1. Now updating the write_bytes counter
312 2. Port script fixes from 1.8.
316 Description: decrease the usage of memory on clients.
317 Details : 1. On clients, recycle dentries and inodes unused.
318 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
323 Description: llobdstat fix and enhancement
324 Details : add a counter to set a limit to how many samples will be returned
325 fix a wildcard in the path to limit to obdfilter stats only
329 Description: lfs check only allowed for root
330 Details : Code cleanups and added a regresion test of non-root use of
335 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
336 Details : Fix hr->hr_index overload.
340 Description: Fix FIEMAP functionality.
344 Description: FC11 patchless client support added
348 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
349 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
353 Description: New acc-sm script and various test-framework enhancments.
357 Description: Previously landed patch was reverted.
361 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
365 Description: Add ldiskfs maxdirsize mount option.
369 Description: Fix mkfs.lustre support for 16TB LUNs.
373 Description: Print mmp_check_interval
374 Details : print mmp_check_interval and make it possible to abort
375 mount operation in case it takes too long.
379 Description: Add cascading_rw to lustre mpi tests.
383 Description: Store SOM data in EA.
384 Details : Also several SOM related cleanups.
388 Description: Add refcount to md_open_data
392 Description: Use refcount on lov_request_set to prevent memory corruption.
396 Description: Statahead: use parent dir's i_mutex for synchronization.
400 Description: loadgen improvements.
404 Description: Enable peer health detection in ksocklnd and ko2iblnd.
408 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
412 Description: Fix race on obd_devcie:md_stats
416 Description: Fix SLES 11 client builds.
417 Details : Resolved uninitalized pointer gcc warnings.
421 Description: Allow non-root access for "lfs check".
422 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
426 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
428 Severity : enhancement
430 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
431 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
435 Description: Sanity test_27p fails.
436 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
437 Sanity tests 27 were cleaned up and improved.
441 Description: Unify req format on client/servers
442 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
443 buffers and swabbers approach..
448 Description: drop join file stuff.
450 Severity : enhancement
452 Description: Add 2.6.27 and SLES11 (patchless client) support
456 Description: Fix in ptlrpc_expire_one_request() to print the signed time
459 Severity : enhancement
461 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
464 Severity : enhancement
466 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
468 Severity : enhancement
470 Description: correctly handle big reply message.
471 Details : send LNet event if reply is bigger than buffer and adjust this buffer
476 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
478 Severity : enhancement
480 Description: Add support for OEL5.
484 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
486 Severity : enhancement
488 Description: "weak-modules" support
489 Details : Implement "weak-modules" support which enables kernel modules
490 to be used with any kernel that implements the same kABI. In
491 order to achieve this modules are now installed in
492 /lib/modules/$(uname -r)/updates/kernel on all distributions.
496 Description: client could not reconnect to OST because of an active request.
497 Details : The client now retries to reconnect to the same server, if a
498 connect request failed with EBUSY or -EAGAIN. Test case 35b
499 conf-sanity.sh has been created.
503 Description: Don't allow make backward step on assignin osc next id.
504 Details : race between allocation next id and ll_sync thread can be cause
505 of set wrong osc next id and can be kill valid ost objects.
509 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
513 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
517 Description: Error handling in osc_statfs_interpret() has been improved.
518 Details : Check in osc_statfs_interpret() for EBADR.
522 Description: Do not send statfs() requests to OSTs disabled by administrator.
523 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
525 Severity : enhancement
527 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
529 Severity : enhancement
531 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
533 Severity : enhancement
535 Description: Enhancement for lfs(1) command to use numeric uid/gid.
539 Description: Improved cleanup procedure for conf-sanity test_46a.
543 Description: Do not start bulk transfer, if client tried to reconnect.
544 Details : Do not start bulk transfer, if client tried to reconnect,
545 but failed due to active rpcs. Check for exp_abort_active_req
546 has been implemented.
550 Description: Prevent inconsistences between linux and lustre mount structures.
551 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
552 Make the sleep interruptible.
554 Severity : enhancement
556 Description: provide server to client comms path
557 Details : server to client communications path via new LDLM_SET_INFO rpc
561 Description: truncate starts GFP_FS allocation under transaction causing deadlock
562 Details : ldiskfs_truncate calls grab_cache_page which may start page
563 allocation under an open transaction. This may lead to
564 calling prune_icache with consequent lustre reentrance.
568 Description: send correctly lsm on open replay
569 Details : MDS is trust to LSM size on replay open, but client can set wrong size
574 Description: enable client interface failover
575 Details : When a child reconnects from another NID, properly update export
576 nid hash position and ldlm reverse import.
578 Severity : enhancement
580 Description: Communicate OST degraded/readonly state via statfs to MDS
581 Details : Flags in the statfs returned from OSTs indicate whether the
582 OST is in a degraded RAID state, or if the filesystem has
583 turned read-only after a filesystem error is detected.
588 Description: don't panic if EPROTO was hit when reading symlink
589 Details : correctly handling request reference in error cases.
591 Severity : enhancement
593 Description: Add LustreNetLink, a kernel-userspace communcation path.
595 Severity : enhancement
597 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
602 Description: access to llog context before init.
603 Details : move handling CATALOGS file at osc layer and forbid access to llog
607 Frequency : rare, only when client is writing to OST on local node
609 Description: Avoid deadlock for local client writes
610 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
611 memory freeing context. This allows OST threads to set the
612 PF_MEMALLOC flag on task structures in order to allocate memory
613 from reserved pools and complete IO.
614 Use GFP_HIGHUSER for OST allocations for non-local client writes,
615 so that the OST threads generate memory pressure and allow
616 inactive pages to be reclaimed.
618 Severity : enhancement
620 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
625 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
626 Details : move ldlm namespace creation in setup phase to avoid grab
627 _lprocfs_lock with cli_sem held.
631 Description: Temporarily disable grant shrink.
632 Details : Disable the feature for debugging.
635 Frequency : only when formatting test filesystems
637 Description: Unable to run several mkfs.lustre on loop devices at the same time
638 Details : mkfs.lustre returns error 256 on the concurrent loop devices
639 formatting. The solution is to proper handle the error.
641 Severity : enhancement
643 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
645 Severity : enhancement
647 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
652 Description: resolve race between obd_disconnect and class_disconnect_exports
653 Details : if obd_disconnect will be called to already disconnected export he
654 forget release one reference and osc module can't unloaded.
656 Severity : enhancement
658 Description: Allow tuning service thread via /proc
659 Details : For each service a new
660 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
661 created that can be used to set min/max thread counts, and get the
662 current number of running threads.
667 Descriptoin: don't return error if have partially created objects for file.
668 Details : lov_update_create_set uses set->set_success as index for created
669 objects, so if some requests will be failed, they will have hole
670 at end of array and qos_shrink_lsm for allocate correct lsm.
672 Severity : enhancement
674 Description: Update OFED support to 1.4.1
679 Description: Reduce small size read RPC
680 Details : Set read-ahead limit for every file and only do read-ahead when
681 available read-ahead pages are bigger than 1M to avoid small size
684 Severity : enhancement
686 Description: move AT tunable parameters for more consistent usage
687 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
689 Severity : enhancement
691 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
692 Details : allow skip disconnected ost for send statfs request and hide error
698 Description: fix racy locking of mballoc block bitmaps causing BUG
699 Details : The locking of the mballoc buddy bitmap and the in-memory
700 block bitmap was using two different spin locks in some
701 cases. This made it possible to incorrectly access the
702 mballoc bitmap while another process was modifying it,
703 causing a sanity assertion to fail. While no on-disk corruption
704 was reported, there was some risk of this happening.
707 Frequency : rare, on llog test 6
709 Descriptoin: don't allow connect to already connected import
710 Details : allowing connect to already connected import is hide connecting problem.
715 Descriptoin: allow kill process which wait statahead result
716 Details : for some reasons 'ls' can stick in waiting result from statahead,
717 in this case need way for kill this process.
719 Severity : enhancement
721 Description: Add state history info file, enhance import info file
722 Details : Track import connection state changes in a new osc/mdc proc file;
723 add overview-type data to the osc/mdc import proc file.
725 Severity : enhancement
727 Description: MDS create should not wait for statfs RPC while holding DLM lock.
729 Severity : enhancement
731 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
736 Descriptoin: OST grant too much space to client even there are not enough space.
737 Details : Client will shrink its grant cache to OST if there are no write
738 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
739 this grant cache if there are already not enough avaible space
740 (left_space < total_clients * 32M).
743 Frequency : start MDS on uncleanly shutdowned MDS device
745 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
746 Details : stay in waiting mds<>ost recovery finished produce random bugs
747 due race between two ll_sync thread for one lov target. send
748 ACTIVATE event only if connect realy finished and import have
752 Frequency : rare, connect and disconnect target at same time
754 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
755 Details : don't call obd_disconnect under lov_lock. this long time
756 operation and can block ptlrpcd which answer to connect request.
761 Descriptoin: don't lose wakeup for imp_recovery_waitq
762 Details : recover_import_no_retry or invalidate_import and import_close can
763 both sleep on imp_recovery_waitq, but we was send only one wakeup
767 Frequency : always with long access acl
769 Descriptoin: mds can't pack reply with long acl.
770 Details : mds don't control size of acl but they limited by reint/getattr
773 Severity : enhancement
775 Description: Update to SLES10 kernel-2.6.16.60-0.33.
777 Severity : enhancement
779 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
782 Frequency : start MDS on uncleanly shutdowned MDS device
784 Descriptoin: aborting recovery hang on MDS
785 Details : don't throttle destroy RPCs for the MDT.
788 Frequency : on remount
790 Description: external journal device not working after the remount
791 Details : clear dev_rdonly flag for external journal devices in
797 Description: shutdown vs evict race
798 Details : client_disconnect_export vs connect request race.
799 if client will evicted at this time - we start invalidate
800 thread without referece to import and import can be freed
804 Frequency : rare, need acl's on inode.
806 Description: client can't handle ost additional correctly
807 Details : if ost was added after client connected to mds client can have
808 hit lnet_try_match_md ... to big messages to wide striped files.
809 in this case need teach client to handle config events about add
810 lov target and update client max ea size at that event.
812 Severity : enhancement
814 Description: Changelogs
815 Details : Changelogs are a lightweight mechanism to track filesystem
816 metadata and namespace changes. The changelog is recorded
817 permanently on the MDTs, and is periodically "consumed" / purged
818 when records are no longer needed.
820 Severity : enhancement
822 Description: compact fld format with extents
823 Details : Store range of seq rather than every seq in FLD. Seq
824 controller update FLD rather than clients. In Case of CMD, mdt0
825 has FLD, all other metadata server act as non persistent proxy
826 for FLD queries and cache fld entries in fld cache.
831 Description: don't skip ost target if they assigned to file
832 Details : Drop slow OSCs if we can, but not for requested start idx.
833 This means "if OSC is slow and it is not the requested
834 start OST, then it can be skipped, otherwise skip it only
835 if it is inactive/recovering/out-of-space.
839 Description: more cleanup in mds_lov
840 Details : not send LOV EA under replay, we can't know about they size at this
841 time. Don't allow client connect to mds before any ost connected,
842 for avoid problems with LOV EA size and returning EIO to client.
844 Severity : enhancement
846 Description: Interoperability at server side (Disk interoperability)
848 Severity : enhancement
850 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
852 Severity : enhancement
854 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
856 Severity : enhancement
858 Description: New client IO stack (CLIO).
860 Severity : enhancement
862 Description: Commit on sharing. Eliminate inter-client dependencies between
863 uncommitted transactions by doing transaction commits.
864 Thereby clients may recovery independently.
867 Frequency : Create a symlink file with a very long name
869 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
870 Details : If there is no extra space in the request for early cancels,
871 ldlm_req_handles_avail() returns 0 instead of a negative value.
873 Severity : enhancement
875 Description: Add /proc entry for import status
876 Details : The mdc, osc, and mgc import directories now have
877 an import directory that contains useful import data for debugging
880 Severity : enhancement
882 Description: Re-disable certain /proc logging
883 Details : Enable and disable client's offset_stats, extents_stats and
884 extents_stats_per_process stats logging on the fly.
887 Frequency : Only on FC kernels 2.6.22+
889 Description: oops in statahead
890 Details : Do not drop reference count for the dentry from VFS when lookup,
891 VFS will do that by itself.
893 Severity : enhancement
895 Description: Generic /proc file permissions
896 Details : Set /Proc file permissions in a more generic way to enable non-
897 root users operate on some /proc files.
901 Description: Hitting mdc_commit_close() ASSERTION
902 Details : Properly handle request reference release in
903 ll_release_openhandle().
907 Description: quota recovery deadlock during mds failover
908 Details : This patch includes att18982, att18236, att18237 in bz14840.
910 1. fix osts hang when mds does failover with quotaon
911 2. prevent watchdog storm when osts threads wait for the
916 Frequency : only patchless client
917 Description: add workaround for race between add/remove dentry from hash
919 Severity : enhancement
921 Description: Allow OST glimpses to return PW locks
925 Description: LBUG when llog conf file is full
926 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
930 Description: Prevent import from entering FULL state when server in recovery
934 Description: service mount cannot take device name with ":"
935 Details : Only when device name contains ":/" will mount treat it as
941 Description: replace ptlrpcd with the statahead thread to interpret the async
942 statahead RPC callback
946 Frequency : on recovery
947 Description: I/O failures after umount during fail back
948 Details : if client reconnected to restarted server we need join to recovery
949 instead of find server handler is changed and process self
950 eviction with cancel all locks.
952 Severity : enhancement
954 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
956 Severity : enhancement
958 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
960 Severity : enhancement
962 Description: Upcall on Lustre log has been dumped
963 Details : Allow for a user mode script to be called once a Lustre log has
964 been dumped. It passes the filename of the dumped log to the
965 script, the location of the script can be specified via
966 /proc/sys/lnet/debug_log_upcall.
971 Description: avoid idr_remove called for id which is not allocated.
972 Details : Move assigment s_dev for clustered nfs to end of initialization,
973 to avoid problem with error handling.
978 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
979 Details : When connection is reused this not moved from CONN_UNUSED_HASH
980 into CONN_USED_HASH and this prodice warning when put connection
981 again in unused hash.
984 Severity : enhancement
986 Description: File striping can now be set to use an arbitrary pool of OSTs.
988 Severity : enhancement
990 Description: Export bytes_read/bytes_write count on OSC/OST.
994 Description: Early reply size mismatch, MGC loses connection
995 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
996 the connect flags are properly negotiated.
1001 Description: quotas are not honored with O_DIRECT
1002 Details : all writes with the flag O_DIRECT will use grants which leads to
1003 this problem. Now using OBD_BRW_SYNC to guard this.
1007 Description: add quota statistics
1008 Details : 1. sort out quota proc entries and proc code.
1009 2. add quota statistics
1011 Severity : enhancement
1013 Description: enable quota support for HEAD.
1017 Description: Properly propagate oinfo flags from lov to osc for statfs
1018 Details : restore missing copy oi_flags to lov requests.
1020 Severity : enhancement
1022 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
1023 : l_getgroups(8), lst(8), routerstat(8)
1024 Details : included man pages for llobdstat(8), llstat(8),
1025 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
1027 Severity : enhancement
1029 Description: configure's --enable-quota should check the
1030 : kernel .config for CONFIG_QUOTA
1031 Details : configure is terminated if --enable-quota is passed but
1032 : no quota support is in kernel
1036 Description: Remove portals compatibility
1037 Details : Remove portals compatibility, not interoperable with releases
1042 Description: Resolve device initialization race
1043 Details : Prevent proc handler from accessing devices added to the
1044 obd_devs array but yet be intialized.
1046 Severity : enhancement
1048 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1050 Severity : enhancement
1052 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1057 Description: Using wrong pointer in osc_brw_prep_request
1058 Details : Access to array[-1] can produce panic if kernel compiled with
1059 CONFIG_PAGE_ALLOC enabled
1063 Description: Client runs out of low memory
1064 Details : Consider only lowmem when counting initial number of llap pages
1068 Description: *optional* service tags registration
1069 Details : if the "service tags" package is installed on a Lustre node
1070 When the filesystem is mounted, a local-node service tag will
1071 be created. See http://inventory.sun.com/ for more information
1072 about the Service Tags asset management system.
1076 Description: Kernel BUG tries to release flock
1077 Details : Lustre does not destroy flock lock before last reference goes
1078 away. So always drop flock locks when client is evicted and
1079 perform unlock regardless of successfulness of speaking to MDS.
1083 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1087 Description: sanity test 65a fails if stripecount of -1 is set
1088 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1093 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1094 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1097 Severity : enhancement
1099 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1103 Description: do not process already freed flock
1104 Details : flock can possibly be freed by another thread before it reaches
1105 to ldlm_flock_completion_ast.
1109 Description: LBUG during stress test
1110 Details : Need properly lock accesses the flock deadlock detection list.
1114 Description: oops in page fault handler
1115 Details : kernel page fault handler can return two special 'pages' in error
1116 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1120 Description: timeout with invalidate import.
1121 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1122 should be handled by ptlrpcd. This produce long age waiting and
1123 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1125 Severity : enhancement
1127 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1131 Description: enable MGS and MDT services start separately
1132 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1133 a co-located MGS without starting the MGS, which is a complement
1134 to 'nosvc' mount option.
1138 Frequency : after recovery
1139 Description: precreate to many object's after del orphan.
1140 Details : del orphan st in oscc last_id == next_id and this triger growing
1141 count of precreated objects. Set flag LOW to skip increase count
1142 of precreated objects.
1146 Frequency : rare, on clear nid stats
1147 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1148 Details : when clean nid stats sometimes try destroy live entry,
1149 and this produce panic in free.
1153 Description: Stack overflow during MDS log replay
1154 ease stack pressure by using a thread dealing llog_process.
1158 Description: wait until IO finished before start new when do lock cancel.
1159 Details : VM protocol want old IO finished before start new, in this case
1160 need wait until PG_writeback is cleared until check dirty flag and
1161 call writepages in lock cancel callback.
1163 Severity : enhancement
1165 Description: using special macro for print time and cleanup in includes.
1169 Description: mds_mfd_close() ASSERTION(rc == 0)
1170 Details : In mds_mfd_close(), we need protect inode's writecount change
1171 within its orphan write semaphore to prevent possible races.
1175 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1179 Frequency : rare, on shutdown ost
1180 Description: don't hit live lock with umount ost.
1181 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1182 use shrink_dcache_sb instead.
1186 Description: don't panic with use echo client
1187 Details : echo client pass NULL as client nid pointer and this produce null
1188 pointer dereference.
1192 Description: fix build on ppc32
1193 Details : compile code with -m64 flag produce wrong object file for ppc32.
1197 Description: add message levels for liblustreapi
1201 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1202 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1203 will result in an -EAGAIN and in the exit call path we call
1204 alloc_rr() which will with increasing aggressiveness attempt to
1205 aquire precreated objects on the minimum number of required OSCs.
1209 Description: Use old size assignment to avoid deadlock
1210 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1211 the scheduling while holding a spinlock. We do not need locking
1212 for size in ll_update_inode() because size is only updated from
1213 the MDS for directories or files without objects, so there is no
1214 other place to do the update, and concurrent access to such inodes
1215 are protected by the inode lock.
1219 Description: resolve "_IOWR redefined" build error on SLES10
1223 Description: dump the memory debugging after all modules are unloaded to
1224 suppress false negative in conf_sanity test 39
1226 Severity : enhancement
1228 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1233 Description: fix SLES kernel versioning
1234 Details : the kernel version for our SLES 10 kernel did not include a "-"
1235 before the "smp" at the end. while this was not a problem in
1236 general, it did mean that software trying to use the kernel
1237 version to try to detect a vendor specific kernel would fail.
1238 this was most evident by the OFED build scripts.
1242 Description: Don't update lov_desc members until making sure they are valid
1243 Details : When updating lov_desc members via proc fs, need fix their
1244 validities before doing the real update.
1248 Description: don't put request into delay list while invalidate in flight.
1249 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1250 import in flight. this produce timeout for invalidate and sometimes
1251 can cause stale data.
1255 Frequency : on ppc only
1256 Description: not convert ost objects for directory because it's not exist.
1257 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1261 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1263 Severity : enhancement
1265 Description: Update to support 2.6.22.14 vanilla kernel.
1269 Frequency : rare, on recovery
1270 Description: read procfs can produce deadlock in some situation
1271 Details : Holding lprocfs lock which send rpc can produce block for destroy
1272 obd objects and this also block reconnect with -EALREADY. This
1273 isn't fix all lprocfs bugs - but make it rare.
1275 Severity : enhancement
1277 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1280 Frequency : frequent on X2 node
1282 Description: mdc_set_open_replay_data LBUG
1283 Details : Set replay data for requests that are eligible for replay.
1287 Description: lustre_mgs: operation 101 on unconnected MGS
1288 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1289 MGC, and late on MGC cannot successfully connect to MGS and a lot
1290 of the error messages complaining that MGS is not connected.
1294 Frequency : on network error
1295 Description: panic with double free request if network error
1296 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1297 but it's true only for synchronus enqueue, for async enqueue
1298 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1301 Severity : enhancement
1303 Description: client-side metadata stat-ahead during readdir(directory readahead)
1304 Details : perform client-side metadata stat-ahead when the client detects
1305 readdir and sequential stat of dir entries therein
1308 Frequency : on start mds
1310 Description: Implement get_info(last_id) in obdfilter.
1313 Frequency : occasional
1315 Description: Correctly check stale fid, not start epoch if ost not support SOM
1316 Details : open with flag O_CREATE need set old fid in op_fid3 because
1317 op_fid2 was overwritten with new generated fid, but mds can answer
1318 with one of these two fids and both is not stale. Setattr
1319 incorrectly started an epoch and assume will be called
1320 done_writing, but without SOM done_writing ever being called.
1323 Frequency : rare, depends on device drivers and load
1325 Description: MDS or OSS nodes crash due to stack overflow
1326 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1327 In some cases, in conjunction with device drivers that use a lot
1328 of stack the MDS (or possibly OSS) service threads could overflow
1329 the stack. One change which was identified to consume additional
1330 stack has been reworked to avoid the extra stack usage.
1333 Frequency : occasional
1335 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1336 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1337 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1338 oscc_has_objects and see OSC has no objests and call
1339 oscc_internal_create to resend create request.
1341 Severity : enhancement
1343 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1345 Severity : enhancement
1347 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1350 Frequency : very rare
1352 Description: Fix replay if there is an un-replied request and open
1353 Details : In some cases, older replay request will revert the
1354 mcd->mcd_last_xid on MDS which is used to record the client's
1355 latest sent request.
1357 Severity : enhancement
1359 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1361 Severity : enhancement
1363 Description: Add rhel5 support to HEAD.
1365 Serverity : enhancement
1367 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1372 Description: Don't allow skipping OSTs if index has been specified.
1373 Details : Don't allow skipping OSTs if index has been specified, make
1374 locking in internal create lots better.
1378 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1379 Details : access to bitfield in structure is always rounded to long
1380 and this produce problem with not atomic change any bit.
1384 Description: Lustre make rpms failed.
1385 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1386 builds Lustre rpms from tarball.
1389 Frequency : rare on shutdown ost
1391 Description: If llog cancel was not send before clean_exports phase, this can
1392 produce deadlock in llog code.
1393 Details : If llog thread has last reference to obd and call class_import_put
1394 this produce deadlock because llog_cleanup_commit_master wait when
1395 last llog_commit_thread exited, but this never success because was
1396 called from llog_commit_thread.
1400 Description: allow userland application know is lost one of stripes.
1401 Details : fill lvb_blocks with error code on ost and return it to
1402 application if error flag found.
1406 Description: NULL lov_tgts causing MDS oops
1407 Details : more safe checks for NULL lov_tgts for avoid oops.
1409 Severity : enhancement
1411 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1415 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1416 Details : If an OST is down the MDS will hang indefinitely in
1417 obd_statfs_rqset() waiting for the statfs data. While for
1418 MDS QOS usage of statfs, it should not stuck in waiting.
1420 Severity : enhancement
1422 Description: remote_acl support
1423 Details : Support ACL-based permission check for remote user.
1424 Support setfacl/getfacl for remote user with the utils
1425 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1426 the system "{s,g}etfacl" utils.
1428 Severity : enhancement
1430 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1432 Severity : enhancement
1434 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1438 Description: make mgs_setparam() handle fsname containing dash
1439 Details : fsname containing a dash does not work with lctl conf_param
1441 Severity : enhancement
1443 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1445 Severity : enhancement
1447 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1451 Frequency : rare, at shutdown
1452 Description: access already free / zero obd_namespace.
1453 Details : if client_disconnect_export was called without force flag set,
1454 and exist connect request in flight, this can produce access to
1455 NULL pointer (or already free pointer) when connect_interpret
1456 store ocd flags in obd_namespace.
1460 Frequency : only at startup
1461 Description: not alloc memory with spinlock held.
1462 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1463 if any spinlock held.
1465 Severity : enhancement
1467 Description: make lustre randomly fail allocating memory
1468 Details : Make lustre randomly failed allocating memory for testing purpose.
1470 Severity : enhancement
1472 Description: lost problems with lov objid file
1473 Details : Fixes some scability and access to not inited memory problems
1474 in work with lov objdid file.
1479 Description: lfs find does not continue on file error
1480 Details : Continue other files processing when a file/dir is absent.
1484 Description: Inconsistent usage of lustre_pack_reply()
1485 Details : Standardize the usage of lustre_pack_reply() such that it
1486 always generate a CERROR on failure.
1489 Frequency : occasional
1491 Description: MDS hang or stay in waiting lock
1492 Details : If client receive lock with CBPENDING flag ldlm need send lock
1493 cancel as separate rpc, to avoid situation when cancel request
1494 can't processed due all i/o threads stay in wait lock.
1498 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1502 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1506 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1510 Description: Update to RHEL4 latest kernel.
1512 Severity : enhancement
1514 Description: Build SLES10 patchless client fails
1515 Details : The configure was broken by run ./configure with
1516 --with-linux-obj=.... argument for patchless client. When the
1517 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1518 can't search header adequately. Use absolute path such as
1519 -I($LINUX)/include instead.
1523 Description: interrupt oig_wait produce painc on resend.
1524 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1525 private set, and this produce situation when rq_ptlrpcd_data not
1526 copyed to new allocated request and triggered LBUG on assert
1527 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1528 ptlrpcd set if request is changed and can be safety changed to use
1533 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1534 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1535 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1536 these macros and replace them with their difinitions instead.
1540 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1541 Details : Update which_patch & target file for SLES10 latest kernel.
1544 Description: Remove client patches from SLES 10 kernel.
1545 Details : This causes SLES 10 clients to behave as patchless clients
1546 even on a Lustre-patched (server) kernel.
1548 Severity : enhancement
1550 Description: self-adjustable client's lru lists
1551 Details : use adaptive algorithm for managing client cached locks lru
1552 lists according to current server load, other client's work
1553 pattern, memory activities, etc. Both, server and client
1554 side namespaces provide number of proc tunables for controlling
1557 Severity : enhancement
1559 Description: light-weight GSS support
1560 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1561 and reduce performance overhead.
1563 Severity : enhancement
1565 Description: Linux keyring support
1566 Details : Support using service of Linux keyring for Lustre GSS internal
1567 context refresh/cache mechanism.
1571 Description: Fix errors in lfs documentation
1572 Details : Fixes man pages
1576 Description: don't use GFP_* in generic Lustre code.
1577 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1581 Description: obdclass is limited by single OBD_ALLOC(idarray)
1582 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1586 Description: warnings with build patchless client with vanila 2.6.19 and up
1587 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1588 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1592 Frequency : Only for SLES
1593 Description: sanity_quota fail test_1
1594 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1595 file, which makes TSTID[2] inunique.
1599 Frequency : Only for SLES9
1600 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1601 Details : Update target/ChangeLog/which_patch .
1605 Frequency : Only for test_10 in sanity-quota.sh
1606 Description: a bug in quota test code
1607 Details : checking a test flag in a wrong place
1611 Frequency : Only for test_13 in sanity-quota.sh
1612 Description: a bug in quota test script
1613 Details : shouldn't check overfull allocated quota
1617 Description: jbd statistics
1618 Details : Port older jbd statistics patch for sles10
1620 Severity : enhancement
1622 Description: Add printing inode info into message about error in writepage.
1627 Description: reply_lock_interpret crash due to race with it and lock cancel.
1628 Details : Do not replay locks that are being cancelled. Do not reference
1629 locks by their address during replay, just by their handle.
1633 Frequency : When flocks are used.
1634 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1635 Details : Flock locks might destroy just granted lock if it could be merged
1636 with another existing flock, this is done in completion handler,
1637 so teach ldlm_cli_enquque_fini that this is a valid case for
1643 Description: Oops in read and write path when failing to allocate lock.
1644 Details : Check if lock allocation failed and return error back.
1648 Description: lstripe command fails for valid OST index
1649 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1650 instead of lov->desc.ld_active_tgt_count.
1654 Description: sanity.sh failed test 103
1655 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1660 Description: df doesn't work properly if diskfs blocksize != 4K
1661 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1665 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1666 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1668 Severity : enhancement
1670 Description: Adaptive timeouts
1671 Details : RPC timeouts adapt to changing server load and network
1672 conditions to reduce resend attempts and improve recovery time.
1676 Description: llapi_file_create() does not allow some changes
1677 Details : add llapi_file_open() that allows specifying the mode and
1678 open flags, and also returns an open file handle.
1682 Description: merge and cleanup kernel patches.
1683 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1687 Description: Add journal checksum support.(Kernel part)
1688 Details : The journal checksum feature adds two new flags i.e
1689 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1690 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1691 indicates that the commit block contains the checksum for
1692 the blocks described by the descriptor blocks. Now commit
1693 record can be sent to disk without waiting for descriptor
1694 blocks to be written to disk. This behavior is controlled
1695 using JBD2_FEATURE_ASYNC_COMMIT flag.
1699 Description: OSS needs mutliple precreate threads
1700 Details : Add ability to start more than one create thread per OSS.
1704 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1705 Details : execute lfs setstripe on client
1709 Description: mds_obd_create error creating tmp object
1710 Details : When the user sets quota on root, llog will be affected and can't
1711 create files and write files.
1714 Frequency : Always on ia64 patchless client, and possibly others.
1716 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1717 Details : This allows the patchless client to be loaded on architectures
1718 without this export.
1722 Description: RedHat Update kernel for RHEL5
1723 Details : Add the kernel config file for RHEL5.
1727 Description: RedHat Update kernel for RHEL5
1728 Details : Modify the kernel config file more closer RHEL5.
1732 Description: Build failure against Centos5 (RHEL5)
1733 Details : Define PAGE_SIZE when it isn't present.
1737 Description: test_7 on sanity-quota.sh can't be used on separate machines
1738 Details : add facet to handle it
1742 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1743 Details : with NFS, the anon dentry's parent was set to itself in
1744 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1745 corresponding dentry other than use rec->ur_name.
1747 Severity : enhancement
1749 Description: lfs setstripe enhancement
1750 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1754 Description: enable data checksumming by default
1755 Details : enable checksum by default, allow --disable-checksum
1756 configure option and "-o nochecksum" mount option. Checksums
1757 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1761 Description: lustre support for RHEL5
1762 Details : Add support for RHEL5.
1766 Description: Client eviction due to failover config
1767 Details : after a connection loss, the lustre client should attempt to
1768 reconnect to the last active server first before trying the
1769 other potential connections.
1773 Description: when mds and osts use different quota unit(32bit and 64bit),
1774 quota will be released repeatly.
1775 Details : void sending multiple quota reqs to mds, which will keep the
1776 status between the reqs.
1780 Description: osts not allocated evenly to files
1781 Details : change the condition to increase offset_idx
1784 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1786 Description: Data corruption for OSTs that are formatted larger than 2TB
1788 Details : When generating the bio request for lustre file writes the
1789 sector number would overflow a temporary variable before being
1790 used for the IO. The data reads correctly from Lustre (which
1791 will overflow in a similar manner) but other file data or
1792 filesystem metadata may be corrupted in some cases.
1796 Description: Tune the kernel for good SCSI performance.
1797 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1798 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1803 Description: rewrite ext2-derived code in obdclass/uuid.c
1804 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1805 from scratch preserving functionality.
1809 Description: "lfs find -obd UUID" prints directories
1810 Details : "lfs find -obd UUID" will return all directory names instead
1811 of just file names. It is incorrect because the directories
1812 do not reside on the OSTs.
1816 Description: use i_size_read and i_size_write in 2.6 port
1817 Details : replace inode->i_size access with i_size_read/write()
1820 Frequency : when removing large files
1822 Description: scheduling issue during removal of large Lustre files
1823 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1824 It causes scheduling issues when removing large files (17TB in the
1828 Frequency : only with liblustre clients on XT3
1830 Description: evictions taking too long
1831 Details : allow llrd to evict clients directly on OSTs
1834 Frequency : only on ppc
1836 Description: /proc/fs/lustre/devices broken on ppc
1837 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1838 We should make sure the type of 'index' is loff_t and then cast
1839 explicitly as needed below. Do not assign an explicitly cast
1843 Frequency : only for rhel5
1845 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1846 Details : Modify the target file & which_kernel.
1848 Severity : enhancement
1850 Description: omit set fsid for export NFS
1851 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1852 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1856 Frequency : Always, for kernels after 2.6.16
1857 Description: Fix warning idr_remove called for id=.. which is not allocated.
1858 Details : Last kernels save old s_dev before kill super and not allow
1859 to restore from callback - restore it before call kill_anon_super.
1863 Description: buffer overruns could theoretically occur
1864 Details : llapi_semantic_traverse() modifies the "path" argument by
1865 appending values to the end of the origin string, and a
1866 overrun may occur. Adding buffer overrun check in liblustreapi.
1870 Description: Fix error on 'ls .' at the top of the Lustre mount.
1871 Details : Don't revalidate dentry if it is a root dentry.
1875 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1876 Details : Modify vm-tunables-rhel4.patch.
1880 Description: Kernel config for 2.6.18-vanilla.
1881 Details : Modify targets/2.6-vanilla.target.in.
1882 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1883 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1884 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1885 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1889 Description: improve handling recoverable errors
1890 Details : if request processig with error which can be recoverable on server
1891 request should be resend, otherwise page released from cache and
1896 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1897 Details : Modify target file & which_patch.
1898 A flaw was found in the IA32 system call emulation provided
1899 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1900 value could be stored in the %RAX register, which could trigger an
1901 out-of-bounds system call table access. An untrusted local user
1902 could exploit this flaw to run code in the kernel
1903 (ie a root privilege escalation). (CVE-2007-4573).
1907 Description: O_DIRECT bypasses client statistics.
1908 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1909 read_ahead_stats were updated. copied the stats section from
1910 osc_send_oap_rpc() into async_internal().
1914 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1918 Description: change order of libsysio includes
1919 Details : '#include sysio.h' should always come before '#include xtio.h'
1923 Description: handle "serious error: objid * already exists" more gracefully
1924 Details : If LAST_ID value on disk is smaller than the objects existing in
1925 the O/0/d* directories, it indicates disk corruption and causes an
1926 LBUG(). If the object is 0-length, then we should use the existing
1927 object. This will help to avoid a full fsck in most cases.
1929 Severity : enhancement
1931 Description: adapt the lustre_config script to support the upgrade case
1932 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1933 server targets to 1.6 in parallel.
1937 Description: To avoid grant space > avaible space when the disk is almost
1938 full. Without this patch you might see the error "grant XXXX >
1939 available" or some LBUG about grant, when the disk is almost
1941 Details : In filter_check_grant, for non_grant cache write, we should
1942 check the left space by if (*left > ungranted + bytes), instead
1943 of (*left > ungranted), because only we are sure the left space
1944 is enough for another "bytes", then the ungrant space should be
1945 increase. In client, we should update cl_avail_grant only there
1946 is OBD_MD_FLGRANT in the reply.
1950 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1951 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1952 described in CVE-2007-4573. This problem could allow untrusted
1953 local users to gain root access.
1956 Frequency : when using O_DIRECT and quotas
1958 Description: Incorrect file ownership on O_DIRECT output files
1959 Details : block usage reported by 'lfs quota' does not take into account
1960 files that have been written with O_DIRECT.
1965 Description: touch file failed when fs is not full
1966 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1967 otherwise we can get ENOSP while fs is not full.
1971 Description: parallel lock callbacks
1972 Details : Instead of sending blocking and completion callbacks as separated
1973 requests, adding them to a set and sending in parallel.
1976 Frequency : only for Cray XT3
1977 Bugzilla : 12829/13455
1978 Description: Changing primary group doesn't change the group lustre assigns to
1980 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
1981 overridden with the primary group provided by the group upcall,
1982 whereas the supplied fsgid can be trusted if it is in the list of
1983 supplementary groups returned by the group upcall.
1985 Severity : enhancement
1987 Description: Allow masking D_WARNING, D_ERROR messages from console
1988 Details : Console messages can now be disabled via lnet.printk.
1992 Description: User code with malformed file open parameter crashes client node
1993 Details : Before packing join_file req, all the related reference should be
1994 checked carefully in case some malformed flags cause fake
1995 join_file req on client.
1999 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
2000 Details : ldlm_completion_ast() assumes that a lock is granted when the req
2001 mode is equal to the granted mode. However, it should also check
2002 that LDLM_FL_CP_REQD is not set.
2006 Description: Heavy nfs access might result in deadlocks
2007 Details : After ELC code landed, it is now improper to enqueue any mds
2008 locks under och_sem, because enqueue might want to decide to
2009 cancel open locks for same inode we are holding och_sem for.
2013 Description: Client eviction while running blogbench
2014 Details : A lot of unlink operations with concurrent I/O can lead to a
2015 deadlock causing evictions. To address the problem, the number of
2016 oustanding OST_DESTROY requests is now throttled to
2017 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
2018 callbacks are processed in priority.
2022 Description: enable ACLs on MDS by default
2023 Details : ACLs must be enabled on MDS by default.
2026 Frequency : PPC/PPC64 only
2028 Description: conflicts between asm-ppc64/types.h and lustre_types.h
2029 Details : fix duplicated definitions between asm-ppc64/types.h and
2030 lustre_types.h on PPC.
2033 Frequency : PPC/PPC64 only
2035 Description: asm-ppc/segment.h does not exist
2036 Details : fix compile issue on PPC.
2040 Description: better handle error messages in extents code
2043 Frequency : RHEL4 only
2045 Description: mkfs is very slow on IA64/RHEL4
2046 Details : A performance regression has been discovered in the MPT Fusion
2047 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2048 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2049 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2051 Severity : enhancement
2053 Description: SNMP support enhancement
2054 Details : Adding total number of sampled request for an MDS node in snmp
2057 Severity : enhancement
2059 Description: Optimize ldlm waiting list processing for PR extent locks
2060 Details : When processing waiting list for read extent lock and meeting read
2061 lock that is same or wider to it that is not contended, skip
2062 processing rest of the list and immediatelly return current
2063 status of conflictness, since we are guaranteed there are no
2064 conflicting locks in the rest of the list.
2068 Description: Time out and refuse to reconnect
2069 Details : When the failover node is the primary node, it is possible
2070 to have two identical connections in imp_conn_list. We must
2071 compare not conn's pointers but NIDs, otherwise we can defeat
2072 connection throttling.
2076 Description: port llog fixes from b1_6 into HEAD
2077 Details : Port llog reference couting and some llog cleanups from b1_6
2078 (bug 10800) into HEAD, for protect from panic and access to already
2079 free llog structures.
2083 Description: Detect stride IO mode in read-ahead
2084 Details : When a client does stride read, read-ahead should detect that and
2085 read-ahead pages according to the detected stride pattern.
2089 Description: data checksumming impacts single node performance
2090 Details : add support for several checksum algorithm. Currently, only CRC32
2091 and Adler-32 are supported. The checksum type can be changed on
2092 the fly via /proc/fs/lustre/osc/*/checksum_type.
2096 Description: use adler32 for page checksums
2097 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2102 Description: build for x2 fails
2103 Details : fix compile issue on Cray systems.
2107 Description: Properly match for duplicate locks
2108 Details : Due to different lock order from skiplists code, we need to
2109 traverse entire list for now
2112 Frequency : only on PPC/SLES10
2114 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2115 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2116 be defined. Add a hack in mkfs_lustre.c to work around this compile
2121 Description: LASSERT on MDS when client holding flock lock dies
2122 Details : ldlm pool logic depends on number of granted locks equal to
2123 number of released locks which is not true for flock locks, so
2124 just exclude such locks from consideration.
2128 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2129 Details : Use fsfilt_sync() for both the whole filesystem sync and
2130 individual file sync to eliminate dangerous inode locking
2131 with I_LOCK that can lead to a deadlock.
2135 Description: performance in 1.6.3
2136 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2137 sure that 1MB requests are not fragmented by the block layer.
2139 Severity : enhancement
2141 Description: organize the server-side client stats on per-nid basis
2142 Details : Change the structure of stats under obdfilter and mds to
2150 The "uuid"s file would list the uuids of _active_ exports.
2151 And the clear entry is to clear all stats and stale nids.
2153 Severity : enhancement
2155 Description: eliminate client locks in face of contention
2156 Details : file contention detection and lockless i/o implementation
2157 for contended files.
2161 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2164 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2166 Description: MDS may lose file striping (and hence file data) in some cases
2167 Details : If there are additional extended attributes stored on the MDS,
2168 in particular ACLs, SELinux, or user attributes (if user_xattr
2169 is specified for the client mount options) then there is a risk
2170 of attribute loss. Additionally, the Lustre file striping
2171 needs to be larger than default (e.g. striped over all OSTs),
2172 and an additional attribute must be stored initially in the
2173 inode and then increase in size enough to be moved to the
2174 external attribute block (e.g. ACL growing in size) for file
2179 Description: skiplist implementation simplification
2180 Details : skiplists are used to group compatible locks on granted list
2181 that was implemented as tracking first and last lock of each
2182 lock group the patch changes that to using doubly linked lists
2186 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2187 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2188 because LASSERT on both the data supplied by a client, and the
2189 data on disk is dangerous and incorrect.
2191 Severity : enhancement
2193 Description: Slow truncate/writes to huge files at high offsets.
2194 Details : Directly associate cached pages to lock that protect those pages,
2195 this allows us to quickly find what pages to write and remove
2196 once lock callback is received.
2200 Description: more ldlm soft lockups
2201 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2202 starve other threads from the resource lock for a long time in
2203 case of long waiting queue, so change the debug level from
2204 D_OTHER to the less frequently used D_INFO.
2206 Severity : enhancement
2208 Description: add -gid, -group, -uid, -user options to lfs find
2212 Description: Hung threads in invalidate_inode_pages2_range
2213 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2214 once one is completed. As a result, some RPCs are stuck in the
2215 queue and are never sent.
2219 Description: filter threads hungs on waiting journal commit
2220 Details : Cleanup filter group llog code, then only filter group llog will
2221 be only created in the MDS/OST syncing process.
2225 Description: Procfs and llog threads access destoryed import sometimes.
2226 Details : Sync the import destoryed process with procfs and llog threads by
2227 the import refcount and semaphore.
2229 Severity : enhancement
2231 Description: openlock cache of b1_6 port to HEAD
2236 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2237 Details : If insertion of an extent fails, then discard the inode
2238 preallocation and free data blocks else it can lead to duplicate
2243 Description: don't always update ctime in ext3_xattr_set_handle()
2244 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2245 In some cases the ctime should not be updated, for example for
2246 2.0->1.8 compatibility it is necessary to delete an xattr and it
2247 should not update the ctime.
2251 Bugzilla : 15713/16362
2252 Description: Assertion in iopen_connect_dentry in 1.6.3
2253 Details : looking up an inode via iopen with the wrong generation number can
2254 populate the dcache with a disconneced dentry while the inode
2255 number is in the process of being reallocated. This causes an
2256 assertion failure in iopen since the inode's dentry list contains
2257 both a connected and disconnected dentry.
2261 Description: assertion failure in ldlm_handle2lock()
2262 Details : fix a race between class_handle_unhash() and class_handle2object()
2263 introduced in lustre 1.6.5 by bug 13622.
2268 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2269 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2274 Description: oops in sd_iostats_seq_show()
2275 Details : unloading/reloading the scsi low level driver triggers a kernel
2276 bug when trying to access the sd iostat file.
2281 Description: Kernel panics during QLogic driver reload
2282 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2283 patch, causing memory corruption.
2288 Description: journal_dev option does not work in b1_6
2289 Details : pass mount option during pre-mount.
2291 Severity : enhancement
2293 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2294 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2295 extent information of a file. It can be used to map logical blocks
2296 in a file to physical blocks in the block device.
2300 Description: LDLM soft lockups - improvement
2301 Details : It is be possible to send the lock handle along with each read
2302 or write request because the client is already doing a lock match
2303 itself so there isn't any reason the OST should have to re-do that
2307 Frequency : only on Cray X2
2309 Description: X2 build failures
2310 Details : fix build failures on Cray X2.
2314 Description: xid & resent requests
2315 Details : Initialize RPC XID from clock at startup (randomly if clock is
2318 Severity : enhancement
2320 Description: Add lustre_start utility to start or stop multiple Lustre servers
2325 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2326 Details : In case of memory pressure, list_del() can be called twice on
2327 req->rq_history_list, causing a kernel oops.
2331 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2332 Details : fix stack overflow in the distributed lock manager by defering
2333 export eviction after a failed AST to the elt thread instead of
2334 handling it in the dlm interpret routine.
2338 Description: Convert some comments to new format.
2339 Details : Update documenting comments to match doxygen conventions.
2343 Description: Grammar fixes.
2344 Details : A couple of trivial spelling fixes.
2348 Description: OSD_COUNTERS-mandatory
2349 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2350 to simplify the code.
2354 Description: simplify cmm_device freeing logic.
2355 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2359 Description: Add lockdep support to dt_object_operations locking interface.
2360 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2361 parameter indicating lock ordering. Update mdd code to use new
2366 Description: Introduce failloc constants for lockless IO tests.
2367 Details : Add two new failloc constants to test lockless IO. Only one of
2368 them in implemented---another is checked in yet to be landed
2373 Description: Add lockdep support for inode mutex.
2374 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2375 in the situations where Lustre has to lock more than one inode
2380 Description: Add optional invariants checking support.
2381 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2382 configure switch. This macro is to be used for consistency and
2383 sanity checks that are too expensive to be left in `production'
2388 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2389 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2394 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2395 Details : Use spin_lock_nested() in (the only) situation where more than
2396 one ldlm_lock is locked simultaneously. Also, fix possible
2397 dead-lock in ldlm_lock_change_resource() by enforcing particular
2402 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2403 Details : Instead of specifying each ldlm_lock call-back through separate
2404 parameter, wrap them into struct ldlm_callback_suite.
2408 Description: Kill join_lru obd method and its callers.
2409 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2410 in memory---a requirement implemented through ->o_join_lru() obd
2411 method in HEAD. Remove this method and its users.
2415 Description: Add asynchronous ldlm ENQUEUE completion handler.
2416 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2417 case that stock ldlm_completion_ast() cannot handle as it waits
2418 until lock is granted. Introduce new ldlm_completion_ast_async()
2419 for this. Also comment ldlm_completion_ast().
2423 Description: ldlm_error <-> errno conversion.
2424 Details : Add functions to map (rather arbitrary) between LDLM error codes
2425 and standard errno values. CLIO needs this to prevent LDLM specific
2426 constants from escaping ldlm and osc.
2430 Description: Kill unused ldlm_handle2lock_ns() function.
2431 Details : Kill unused ldlm_handle2lock_ns() function.
2435 Description: Add lu_ref support to ldlm_lock
2436 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2437 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2438 and ldlm_resource. LDLM interface has to be changed, because code that
2439 releases a reference on a lock, has to "know" what reference this is.
2440 In the most frequent case
2442 lock = ldlm_handle2lock(handle);
2444 LDLM_LOCK_PUT(lock);
2446 no changes are required. When any other reference (received _not_ from
2447 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2448 instead of LDLM_LOCK_PUT().
2450 Arguably, changes are pervasive, and interface requires some discipline
2451 for proper use. On the other hand, it was very instrumental in finding
2452 a few leaked lock references.
2456 Description: Add ldlm_lock_addref_try().
2457 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2458 attempts to addref a lock that might be being canceled
2463 Description: Add ldlm_weigh_callback().
2464 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2465 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2466 hard-coded `number of pages' logic.
2470 Description: Add lockdep annotations to llog code.
2471 Details : Use appropriately tagged _nested() locking calls in the places
2472 where llog takes more than one ->lgh_lock lock.
2476 Description: Add loi_kms_set().
2477 Details : Wrap kms updates into a helper function.
2481 Description: Constify instances of struct lsm_operations.
2482 Details : Constify instances of struct lsm_operations.
2486 Description: lu_conf support.
2487 Details : On a server, a file system object is uniquely identified
2488 by a fid, which is sufficient to locate and load all object
2489 state (inode). On a client, on the other hand, more data are
2490 necessary instantiate an object. Change lu_object_find() and
2491 friends to take additional `lu_conf' argument describing object.
2492 Typically this includes layout information.
2496 Description: lu_context fixes.
2497 Details : Introduce new lu_context functions that are needed on the client
2498 side, where some system threads (ptlrpcd) are shared by multiple
2499 modules, and so cannot be stopped during module shutdown.
2503 Description: Add start and stop methods to lu_device_type_operations.
2504 Details : Introduce two new methods in lu_device_type_operations, that are
2505 invoked when first instance of a given type is created and last one
2506 is destroyed respectively. This is need by CLIO.
2510 Description: Add lu_ref support to struct lu_device.
2511 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2512 track leaked references.
2516 Description: Introduce lu_kmem_descr.
2517 Details : lu_kmem_descr and its companion interface allow to create
2518 and destroy a number of kmem caches at once.
2522 Description: Fix lu_object finalization race.
2523 Details : Fix a race between lu_object_find() finding an object and its
2524 concurrent finalization. This race is (most likely) not possible
2525 on the server, but might happen on the client.
2529 Description: Introduce lu_ref interface.
2530 Details : lu_ref is a debugging module allowing to track references to
2531 a given object. It is quite cpu expensive, and has to be
2532 explicitly enabled with --enable-lu_ref. See usage description
2537 Description: Factor lu_site procfs stats into a separate function.
2538 Details : Separate lu_site stats printing code into a separate function
2539 that can be reused on a client.
2543 Description: Constify instances of struct {lu,dt,md}_device_operations.
2544 Details : Constify instances of struct {lu,dt,md}_device_operations.
2548 Description: Introduce struct md_site and move meta-data specific parts of
2549 struct lu_site here.
2550 Details : Move md-specific fields out of struct lu_site into special struct
2551 md_site, so that lu_site can be used on a client.
2555 Description: Kill mdd_lov_destroy().
2556 Details : Remove unused mdd code.
2560 Description: Add st_block checking to multistat.c.
2561 Details : Add st_block checking to multistat.c.
2565 Description: Add lu_ref support to struct obd_device.
2566 Details : Add lu_ref tracking to obd_device.
2570 Description: Kill obd_set_fail_loc().
2571 Details : Remove unused code.
2575 Description: Add special type for ptlrpc_request interpret functions.
2576 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2577 there. Actual usage will be in CLIO.
2581 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2582 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2583 doesn't work with lockdep.
2587 Description: Add rwv.c test program.
2588 Details : New testing program exercising readv(2) and writev(2) (Qian).
2592 Description: Add sendfile.c test program.
2593 Details : New testing program exercising sendfile(2) (Jay).
2597 Description: Ratelimit a message that can be very frequent.
2598 Details : Ratelimit a memory allocation failure message that can
2603 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2604 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2608 Description: Liblustre build fixes.
2609 Details : Liblustre build fixes.
2613 Description: libcfs: add cfs_{need,cond}_resched() interface.
2614 Details : libcfs: add cfs_{need,cond}_resched() definition and
2615 implementations for Linux, NT, and liblustre.
2617 Severity : enhancement
2619 Description: More exported tunables for mballoc
2620 Details : Add support for tunable preallocation window and new tunables for
2621 large/small requests
2625 Description: Detect corruption of block bitmap and checking for preallocations
2626 Details : Checks validity of on-disk block bitmap. Also it does better
2627 checking of number of applied preallocations. When corruption is
2628 found, it turns filesystem readonly to prevent further corruptions.
2632 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2633 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2634 window to 0. If it does hit cache miss, and read-pattern is still
2635 stride-io mode, does not reset the stride window, but also does not
2636 increase the stride window length in this case.
2640 Frequency : only for big-endian servers
2641 Description: Check if system is big-endian while mounting fs with extents feature
2642 Details : Mounting a filesystem with extents feature will fail on big-endian
2643 systems since ext3-based ldiskfs is not supported on big-endian
2644 systems. This can be over-riden with "bigendian_extents" mount option.
2646 Severity : enhancement
2648 Description: The root squash functionality
2649 Details : A security feature, which is to prevent users from being able
2650 to mount lustre on their desktop, run as root, and delete
2651 all of the files in the filesystem. The goal is accomplished by
2652 remapping user id (UID) and group id (GID) of the root user to
2653 a UID and GID specified by the system administartor via Lustre
2654 configuration management server (MGS). The functionality also
2655 allows to specify sets of clients for which the remapping does
2660 Description: Excessive recovery window
2661 Details : With AT enabled, the recovery window can be excessively long (6000+
2662 seconds). To address this problem, we no longer use
2663 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2664 timeout no longer depends on the service time, it is set to
2665 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2666 time via pb_service_time.
2670 Description: Watchdog triggered on MDS failover
2671 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2672 the OSTs know that the MDS "UUID" can be reused for the same export
2673 from a different NID, so we do not need to wait for the export to be
2677 Frequency : rare, only if using MMP with Linux RAID
2679 Description: MMP doesn't work with Linux RAID
2680 Details : While using HA for Lustre servers with Linux RAID, it is possible
2681 that MMP will not detect multiple mounts. To make this work we
2682 need to unplug the device queue in RAID when the MMP block is being
2683 written. Also while reading the MMP block, we should read it from
2684 disk and not the cached one.
2686 Severity : enhancement
2688 Description: open file using fid
2689 Details : A file can be opened using just its fid, like
2690 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2693 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2696 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2697 Details : add proper locking for creation of jbd_4k slab cache
2701 Description: MMP check in ext3_remount() fails without displaying any error
2702 Details : When multiple mount protection fails during remount, proper error
2705 Severity : enhancement
2707 Description: Allow stripe size to be up to 4G-64k
2708 Details : Fix math logic to allow large stripe sizes.
2712 Description: add check for >8TB ldiskfs filesystems
2713 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2714 Don't allow >8TB ldiskfs filesystems to be mounted without
2715 force_over_8tb mount option
2720 Descriptoin: OSS complains "too many blocks" and crashes
2721 Details : In filter_commitrw_write():
2722 1. lquota_chkquota();
2723 2. obdo_from_inode();
2724 3. lquota_pending_commit();
2725 "2." has changed uid and gid in this case, then caused
2726 lquota_chkquota() and lquota_pending_commit() to use
2727 different uid and gid. That is the root of the bug.
2731 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2732 Details : Detect and print out the 'stripe count = -1' case properly.
2736 Description: Out or order replies might be lost on replay
2737 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2738 request with tid smaller than one currently being added, add it
2739 to the start, not end of the list.
2741 --------------------------------------------------------------------------------
2743 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2745 * Support for kernels:
2746 2.6.5-7.283 (SLES 9),
2747 2.6.9-55.EL (RHEL 4),
2748 2.6.16.46-0.14 (SLES 10),
2749 2.6.18.8 vanilla (kernel.org)
2750 * Client support for unpatched kernels:
2751 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2752 2.6.16 - 2.6.22 vanilla (kernel.org)
2753 * Due to recently discovered recovery problems, we do not recommend
2754 using patchless RHEL 4 clients with this or any earlier release.
2755 * Recommended e2fsprogs version: 1.39.cfs8
2756 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2757 * Starting with this release, the ldiskfs backing filesystem required
2758 by Lustre is now in its own package, lustre-ldiskfs. This package
2759 should be installed. It is versioned separately from Lustre and
2760 may be released separately in future.
2764 Description: block reactivating mgc import until all deactivates complete
2765 Details : Fix race when failing back MDT/MGS to itself (testing)
2768 Frequency : at statup only
2770 Description: mds_lov_synchronize race leads to various problems
2771 Details : simultaneous MDT->OST connections at startup can cause the
2772 sync to abort, leaving the OSC in a bad state.
2774 Severity : enhancement
2776 Description: add optional extra BUILD_VERSION info
2777 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2778 to override the lustre version.
2781 Frequency : 2.6.18 servers only
2783 Description: ll_kern_mount() doesn't release the module reference
2784 Details : The ldiskfs module reference count never drops down to 0
2785 because ll_kern_mount() doesn't release the module reference.
2790 Description: server LBUG when using old ost_num_threads parameter
2791 Details : Accept the old ost_num_threads parameter but warn that it
2792 is deprecated, and fix an off-by-one error that caused an LBUG.
2797 Description: Transient SCSI error results in persistent IO issue
2798 Details : iobuf->dr_error is not reinitialized to 0 between two
2802 Frequency : sometimes when underlying device returns I/O errors
2804 Description: OSTs not going read-only during write failures
2805 Details : OSTs are not remounted read-only when the journal commit threads
2806 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2807 instead of the ext3 wrappers.
2811 Description: poor connect scaling with increasing client count
2812 Details : Don't run filter_grant_sanity_check for more than 100 exports
2813 to improve scaling for large numbers of clients.
2816 Frequency : SLES10 only
2818 Description: sanity-quota.sh quotacheck failed: rc = -22
2819 Details : Quotas cannot be enabled on SLES10.
2822 Frequency : liblustre clients only
2824 Description: getdirentries does not give error when run on compute nodes
2825 Details : getdirentries does not fail when the size specified as an argument
2826 is too small to contain at least one entry
2828 Severity : enhancement
2830 Description: Add LNET router traceability for debug purposes
2831 Details : If a checksum failure occurs with a router as part of the
2832 IO path, the NID of the last router that forwarded the bulk data
2833 is printed so it can be identified.
2838 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2839 Details : Due to a race condition, liblustre clients were occasionally
2840 evicted incorrectly.
2842 Severity : enhancement
2844 Description: lfs setstripe use optional parameters instead of postional
2847 Severity : enhancement
2849 Description: Nanosecond timestamp support for ldiskfs
2850 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2851 resolution timestamps. There is not yet support for this at
2852 the Lustre filesystem level.
2855 Frequency : during server recovery
2857 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2858 Details : request with rq_no_resend flag not awake l_wait_event if they get
2862 Frequency : nfs export on patchless client
2864 Description: connectathon hang when test nfs export over patchless client
2865 Details : Disconnected dentry cannot be found with lookup, so we do not need
2866 to unhash it or make it invalid
2869 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2870 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2871 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2876 Description: open req refcounting wrong on reconnect
2877 Details : If reconnect happened between getting open reply from server and
2878 call to mdc_set_replay_data in ll_file_open, we will schedule
2879 replay for unreferenced request that we are about to free.
2880 Subsequent close will crash in variety of ways.
2881 Check that request is still eligible for replay in
2882 mdc_set_replay_data().
2887 Description: disable writes to filesystem when reading health_check file
2888 Details : the default for reading the health_check proc file has changed
2889 to NOT do a journal transaction and write to disk, because this
2890 can cause reads of the /proc file to hang and block HA state
2891 checking on a healthy but otherwise heavily loaded system. It
2892 is possible to return to the previous behaviour during configure
2893 with --enable-health-write.
2895 Severity : enhancement
2897 Description: 64-bit inode version
2898 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2899 to the inode. This will be required for version-based recovery.
2904 Description: MDS fails to start if a duplicate client export is detected
2905 Details : in some rare cases it was possible for a client to connect to
2906 an MDS multiple times. Upon recovery the MDS would detect this
2907 and fail during startup. Handle this more gracefully.
2909 Severity : enhancement
2911 Description: Add -o localflock option to simulate old noflock
2913 Details : This will achieve local-only flock/fcntl locks
2919 Description: log_commit_thread vs filter_destroy race leads to crash
2920 Details : Take import reference before releasing llog record semaphore
2925 Description: Wrong request locking in request set processing
2926 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2927 imp_delayed_list, in this place should be used imp_lock.
2930 Frequency : when reconnection
2932 Description: Grant Leak when osc reconnect to OST
2933 Details : When osc reconnect ost, OST(filter) should check whether it
2934 should grant more space to client by comparing fed_grant and
2935 cl_avail_grant, and return the granted space to client instead
2936 of "new granted" space, because client will call osc_init_grant
2937 to update the client grant space info.
2940 Frequency : when client reconnect to OST
2942 Description: Grant Leak when osc do resend and replay bulk write
2943 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2944 bulk write request, because the grant info while be sync between
2945 OSC and OST when reconnect, and we should ignore the grant info
2946 these of resend/replay write req.
2951 Description: Grant space more than available left space sometimes.
2952 Details : When then OST is about to be full, if two bulk writing from
2953 different clients came to OST. Accord the avaliable space of the
2954 OST, the first req should be permitted, and the second one
2955 should be denied by ENOSPC. But if the seconde arrived before
2956 the first one is committed. The OST might wrongly permit second
2957 writing, which will cause grant space > available space.
2960 Frequency : when client is evicted
2962 Description: Grant might be wrongly erased when osc is evicted by OST
2963 Details : when the import is evicted by server, it will fork another
2964 thread ptlrpc_invalidate_import_thread to invalidate the
2965 import, where the grant will be set to 0. While the original
2966 thread will update the grant it got when connecting. So if
2967 the former happened latter, the grant will be wrongly errased
2968 because of this race.
2973 Description: Checking Stale with correct fid
2974 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
2975 to check whether it is stale, because sometimes, we want the
2976 enqueue happened anyway, and op_data.fid2 will not be initialized.
2978 Severity : enhancement
2980 Description: update patchless client
2981 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
2984 Frequency : only with 2.4 kernel
2986 Description: random memory corruption
2987 Details : size of struct ll_inode_info is to big for union inode.u and this
2988 can be cause of random memory corruption.
2993 Description: Memory leak in recovery
2994 Details : Lov_mds_md was not free in an error handler in mds_create_object.
2995 It should also check obd_fail before fsfilt_start, otherwise if
2996 fsfilt_start return -EROFS,(failover mds during mds recovery).
2997 then the req will return with repmsg->transno = 0 and rc = EROFS.
2998 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
2999 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
3000 be freed no matter whether fsfilt_commit success or not.
3003 Frequency : only with huge count clients
3005 Description: Prevents from taking the superblock lock in llap_from_page for
3007 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
3008 for llap_from_page call in ll_removepage prevents from taking the
3009 superblock lock for a soon died page.
3014 Description: Not check open intent error before release open handle
3015 Details : in some rare cases, the open intent error is not checked before
3016 release open handle, which may cause
3017 ASSERTION(open_req->rq_transno != 0), because it tries to release
3018 the failed open handle.
3023 Description: Set cat log bitmap only after create log success.
3024 Details : in some rare cases, the cat log bitmap is set too early. and it
3025 should be set only after create log success.
3029 Description: Accessing a block bevice can re-enable I/O when Lustre is
3030 tearing down a device.
3031 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3036 Description: service threads may hog cpus when there are a lot of requests
3037 Details : Insert cond_resched to give other threads a chance to use some CPU
3042 Description: the cat log was not initialized in recovery
3043 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3044 unlink log on mds will not be initialized until mds post
3045 recovery. And also in mds post recovery, the unlink log will
3046 initialization will be done asynchronausly, so there will be race
3047 between add unlink log and unlink log initialization.
3051 Description: brw_stats were being printed incorrectly
3052 Details : brw_stats were being printed as log2 but all of them were not
3053 recorded as log2. Also remove some code duplication arising from
3054 filter_tally_{read,write}.
3058 Frequency : rare, only in recovery.
3059 Description: ASSERTION(req->rq_type != LI_POISON) failed
3060 Details : imp_lock should be held while iterating over imp_sending_list for
3061 prevent destroy request after get timeout in ptlrpc_queue_wait.
3065 Description: replay-single.sh test 52 fails
3066 Details : A lock's skiplist need to be cleanup when it being unlinked
3067 from its resource list.
3071 Description: Short directio read returns full requested size rather than
3073 Details : Direct I/O operations should return actual amount of bytes
3074 transferred rather than requested size.
3076 Severity : enhancement
3078 Description: metadata RPC reduction (e.g. for rm performance)
3079 Details : decrease the amount of synchronous RPC between clients and servers
3080 by canceling conflicing lock before the operation on the client
3081 and packing thier handles into the main operation RPC to server.
3083 Severity : enhancement
3085 Description: Async OSC create to avoid the blocking unnecessarily.
3086 Details : If an OST has no remaining object, system will block on the
3087 creation when it needs to create a new object on this OST. Now,
3088 ways use pre-created objects when available, instead of blocking on
3089 an empty osc while others are not empty. If we must block, we
3090 block for the shortest possible period of time.
3094 Description: improve handling recoverable errors
3095 Details : if request processig with error which can be recoverable on server
3096 request should be resend, otherwise page released from cache and
3099 Severity : enhancement
3101 Description: refine locking for avoid write wrong info into lov_objid file
3102 Details : fix possible races with add new target and write/update data in
3105 --------------------------------------------------------------------------------
3107 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3112 Frequency : on some architectures
3114 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3115 Details : Uninitialized flags sometimes cause configuration commands to
3119 Frequency : patchless clients only
3121 Description: missing __iget() symbol export
3122 Details : The __iget() symbol export is missing. To avoid the need for
3123 this on patchless clients the deathrow inode reaper is turned
3124 off, and we depend on the VM to clean up old inodes. This
3125 dependency was during via the fix for bug 12181.
3127 --------------------------------------------------------------------------------
3129 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3131 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3132 INTEROPERATE with older versions automatically. In many cases a
3133 special upgrade step is needed. Please read the
3134 user documentation before upgrading any part of a live system.
3135 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3136 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3137 * WARNING: Lustre configuration and startup changes are required with
3138 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3142 Severity : enhancement
3144 Description: MountConf
3145 Details : Lustre configuration is now managed via mkfs and mount
3146 commands instead of lmc and lconf. New obd types (MGS, MGC)
3147 are added for dynamic configuration management. See
3148 https://mail.clusterfs.com/wikis/lustre/MountConf for
3151 Severity : enhancement
3153 Description: dynamic OST addition
3154 Details : OSTs can now be added to a live filesystem
3156 Severity : enhancement
3158 Description: startup order invariance
3159 Details : MDTs and OSTs can be started in any order. Clients only
3160 require the MDT to complete startup.
3162 Severity : enhancement
3164 Description: parallel, asynchronous orphan cleanup
3165 Details : orphan cleanup is now performed in separate threads for each
3166 OST, allowing parallel non-blocking operation.
3168 Severity : enhancement
3170 Description: optimized stripe assignment
3171 Details : stripe assignments are now made based on ost space available,
3172 ost previous usage, and OSS previous usage, in order to try
3173 to optimize storage space and networking resources.
3175 Severity : enhancement
3177 Description: Permanently set tunables
3178 Details : All writable /proc/fs/lustre tunables can now be permanently
3179 set on a per-server basis, at mkfs time or on a live system.
3181 Severity : enhancement
3183 Description: Lustre message v2
3184 Details : Add lustre message format v2.
3186 Severity : enhancement
3188 Description: client OST exclusion list
3189 Details : Clients can be started with a list of OSTs that should be
3190 declared "inactive" for known non-responsive OSTs.
3194 Description: SPEC SFS validation failure on NFS v2 over lustre.
3195 Details : Changes the blocksize for regular files to be 2x RPC size,
3196 and not depend on stripe size.
3198 Severity : enhancement
3200 Description: Multiple MD RPCs in flight.
3201 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3202 To avoid overly-overloading MDS, introduce a limit on number of
3203 MDS RPCs in flight for a single client and add /proc controls
3204 to adjust this limit.
3206 Severity : enhancement
3208 Description: client read/write statistics
3209 Details : Add client read/write call usage stats for performance
3210 analysis of user processes.
3211 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3212 file access. extents_stats shows chunk size distribution.
3213 extents_stats_per_process show chunk size distribution per
3216 Severity : enhancement
3218 Description: mds statistics
3219 Details : Add detailed mds operations statistics in
3220 /proc/fs/lustre/mds/*/stats.
3224 Description: Failure of copying files with lustre special EAs.
3225 Details : Client side always return success for setxattr call for lustre
3226 special xattr (currently only "trusted.lov").
3231 Description: Refcount LNET uuids
3232 Details : The global LNET uuid list grew linearly with every startup;
3233 refcount repeated list entries instead of always adding to
3236 Severity : enhancement
3238 Description: Dynamic service threads
3239 Details : Within a small range, start extra service threads
3240 automatically when the request queue builds up.
3243 Frequency : mixed-endian client/server environments
3245 Description: mixed-endian crashes
3246 Details : The new msg_v2 system had some failures in mixed-endian
3249 Severity : enhancement
3251 Description: Easy OST removal
3252 Details : OSTs can be permanently deactivated with e.g. 'lctl
3253 conf_param lustre-OST0001.osc.active=0'
3255 Severity : enhancement
3257 Description: MGS proc entries
3258 Details : Added basic proc entries for the MGS showing what filesystems
3261 Severity : enhancement
3263 Description: provide MGS failover
3264 Details : Added config lock reacquisition after MGS server failover.
3266 Severity : enhancement
3268 Description: add Linux 2.4 support
3269 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3273 Description: a large application tries to do I/O to the same resource and dies
3274 in the middle of it.
3275 Details : Check the req->rq_arrival time after the call to
3276 ost_brw_lock_get(), but before we do anything about
3277 processing it & sending the BULK transfer request. This
3278 should help move old stale pending locks off the queue as
3279 quickly as obd_timeout.
3282 Frequency : when an incorrect nid is specified during startup
3284 Description: ptlrpc connect to non-existant node causes kernel crash
3285 Details : LNET can't be re-entered from an event callback, which
3286 happened when we expire a message after the export has been
3287 cleaned up. Instead, hand the zombie cleanup off to another
3290 Severity : enhancement
3292 Description: plain/inodebits lock performance improvement
3293 Details : Grouping plain/inodebits in granted list by their request modes
3294 and bits policy, thus improving the performance of search through
3298 Frequency : only if OST filesystem is corrupted
3300 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3301 Details : for a short time RPCs with bulk IO are in the replay list,
3302 but replay of bulk IOs is unimplemented. If the OST filesystem
3303 is corrupted due to disk cache incoherency and then replay is
3304 started it is possible to trip an assertion. Avoid putting
3305 committed RPCs into the replay list at all to avoid this issue.
3308 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3310 Description: System hang on startup
3311 Details : This bug allowed the liblustre (e.g. catamount) client to
3312 return to the app before handling all startup RPCs. This
3313 could leave the node unresponsive to lustre network traffic
3314 and manifested as a server ptllnd timeout.
3316 Severity : enhancement
3318 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3319 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3320 boolean to control whether to print peer debug info when a
3321 client's RPC times out.
3324 Frequency : only for kernels with patches from Lustre below 1.4.3
3326 Description: Remove old rdonly API
3327 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3330 Frequency : only for devices with external journals
3332 Description: Set external device read-only also
3333 Details : During a commanded failover stop, we set the disk device
3334 read-only while the server shuts down. We now also set any
3335 external journal device read-only at the same time.
3338 Frequency : when upgrading from 1.4 while trying to change parameters
3340 Description: The wrong (new) MDC name was used when setting parameters for
3341 upgraded MDT's. Also allows changing of OSC (and MDC)
3342 parameters if --writeconf is specified at tunefs upgrade time.
3345 Frequency : when setting specific ost indicies
3347 Description: QOS code breaks on skipped indicies
3348 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3349 created with --index need not be sequential.
3351 Severity : enhancement
3353 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3354 Details : The uninit_groups feature works in conjunction with the kernel
3355 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3356 up the pass1 processing of e2fsck. This is a read-only feature
3357 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3358 mount filesystems that have had this feature enabled.
3360 Severity : enhancement
3362 Description: Improve multi-block allocation algorithm to avoid fragmentation
3363 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3364 allocation locality and avoid filesystem fragmentation.
3366 ------------------------------------------------------------------------------
3368 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3370 * Support for kernels:
3371 2.4.21-47.0.1.EL (RHEL 3)
3372 2.6.5-7.283 (SLES 9)
3373 2.6.9-42.0.10.EL (RHEL 4)
3374 2.6.12.6 vanilla (kernel.org)
3375 2.6.16.27-0.9 (SLES 10)
3376 * Recommended e2fsprogs version: 1.39.cfs5
3378 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3382 Frequency : occasional, depends on client load and configuration
3383 Bugzilla : 12181, 12203
3384 Description: data loss for recently-modified files
3386 Details : In some cases it is possible that recently written or created
3387 files may not be written to disk in a timely manner (this should
3388 normally be within 30s unless client IO load is very high).
3389 The problem appears as zero-length files or files that are a
3390 multiple of 1MB in size after a client crash or client eviction
3391 that are missing data at the end of the file.
3393 This problem is more likely to be hit on clients where files are
3394 repeatedly created and unlinked in the same directory, clients
3395 have a large amount of RAM, have many CPUs, the filesystem has
3396 many OSTs, the clients are rebooted frequently, and/or the files
3397 are not accessed by other nodes after being written.
3399 The presence of the problem can be detected by looking at
3400 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3401 smaller than the second (nr_unused) then dirty files will not
3402 be flushed automatically to disk. "sync; sleep 10" should be
3403 run several times on the node before unmounting it to update
3404 Lustre (this is also safe to run on nodes without this problem).
3406 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3407 that can cause this same problem, so customers using that kernel
3408 also need to update the kernel in addition to Lustre. In order
3409 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3411 It is normal that files written just before a client crash (less
3412 than 30s) may not yet have been flushed to disk, even for local
3416 Frequency : frequent on thin XT3 nodes
3418 Description: UUID collision on thin XT3 Linux nodes
3419 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3420 randomly, since we relied on an insufficiently-seeded PRNG.
3425 Description: OSS hangs after "All ost request buffers busy"
3426 Details : A deadlock between quota and journal operations caused OSS
3427 hangs after printing "All ost request buffers busy."
3430 Frequency : always on liblustre builds
3432 Description: Cleanup compiler warnings on liblustre
3435 Frequency : always on liblustre builds on XT3
3437 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3441 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3442 > 32000 subdirectories
3443 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3444 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3445 subdirectory count crosses 32000. This will aid e2fsck to
3446 correctly handle more than 32000 subdirectories.
3449 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3451 Description: System hang on startup
3452 Details : This bug allowed the liblustre (e.g. catamount) client to
3453 return to the app before handling all startup RPCs. This
3454 could leave the node unresponsive to lustre network traffic
3455 and manifested as a server ptllnd timeout.
3457 Severity : enhancement
3459 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3460 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3461 boolean to control whether to print peer debug info when a
3462 client's RPC times out.
3467 Description: make O_SYNC working on 2.6 kernels
3468 Details : 2.6 kernels use different method for mark pages for write,
3469 so need add a code to lustre for O_SYNC work.
3474 Description: Failure to close file and release space on NFS
3475 Details : Put inode details into lock acquired in ll_intent_file_open.
3476 Use mdc_intent_lock in ll_intent_open to properly
3477 detect all kind of errors unhandled by mdc_enqueue.
3482 Description: proc file read during shutdown sometimes raced obd removal,
3484 Details : Add lock to prevent obd access after proc file removal.
3487 Frequency : Only for files larger than 4GB on 32-bit clients.
3489 Description: improperly doing page alignment of locks
3490 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3491 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3496 Description: RPCs being resent when they shouldn't be
3497 Details : Some RPCs that should not be resent are being resent. This
3498 can cause inconsistencies in the RPC state machine. Do not
3499 resend such requests.
3502 Frequency : rare, only with NFS export
3504 Description: Crash on NFS re-export node
3505 Details : under very unusual load conditions an assertion is hit in
3506 ll_intent_file_open()
3509 Frequency : only if OST filesystem is corrupted
3511 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3512 Details : for a short time RPCs with bulk IO are in the replay list,
3513 but replay of bulk IOs is unimplemented. If the OST filesystem
3514 is corrupted due to disk cache incoherency and then replay is
3515 started it is possible to trip an assertion. Avoid putting
3516 committed RPCs into the replay list at all to avoid this issue.
3521 Description: large O_DIRECT requests fail under memory pressure/fragmentation
3522 Details : Large single O_DIRECT read and write calls can fail to allocate
3523 a sufficiently large buffer to process the request. In case of
3524 allocation failure the allocation is retried with a smaller
3525 buffer and broken into smaller requests.
3527 Severity : enhancement
3529 Description: Add -o localflock option to simulate old noflock behaviour.
3530 Details : This will achieve local-only flock/fcntl locks coherentness.
3535 Description: versioning check is incomplete
3536 Details : Checking the version difference of client vs. server, report
3537 error if the gap is too big.
3542 Description: add support PG_writeback bit
3543 Details : add support for PG_writeback bit for Lustre, for more carefull
3544 work with page cache in 2.6 kernel. This also fix some deadlocks
3545 and remove hack for work O_SYNC with 2.6 kernel.
3547 Severity : enhancement
3549 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3550 Details : The uninit_groups feature works in conjunction with the kernel
3551 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3552 up the pass1 processing of e2fsck. This is a read-only feature
3553 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3554 mount filesystems that have had this feature enabled.
git://git.whamcloud.com / fs / lustre-release.git / blob