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 2.6.32-573.18.1.el6 (RHEL6.7)
9 3.10.0-327.3.1.el7 (RHEL7.2)
10 3.0.101-0.47.71 (SLES11 SP3)
11 3.0.101-68 (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 2.6.32-573.18.1.el6 (RHEL6.7)
17 3.10.0-327.3.1.el7 (RHEL7.2)
18 3.0.101-0.47.71 (SLES11 SP3)
19 3.0.101-68 (SLES11 SP4)
22 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
23 * Recommended ZFS / SPL version: 0.6.4.2
24 * Tested with ZFS / SPL version: 0.6.4.2
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 02-29-2016 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 2.6.32-504.30.3.el6 (RHEL6.6)
40 2.6.32-573.12.1.el6 (RHEL6.7)
41 3.10.0-327.3.1.el7 (RHEL7.2)
42 3.0.101-0.47.71 (SLES11 SP3)
43 3.0.101-68 (SLES11 SP4)
44 vanilla linux 4.2.1 (ZFS only)
45 * Client known to build on unpatched kernels:
46 2.6.32-431.29.2.el6 (RHEL6.5)
47 2.6.32-504.30.3.el6 (RHEL6.6)
48 2.6.32-573.12.1.el6 (RHEL6.7)
49 3.10.0-327.3.1.el7 (RHEL7.2)
50 3.0.101-0.47.71 (SLES11 SP3)
51 3.0.101-68 (SLES11 SP4)
54 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
55 * Recommended ZFS / SPL version: 0.6.4.2
56 * Tested with ZFS / SPL version: 0.6.4.2
57 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
58 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
59 stack overflow. For more information, please refer to bugzilla 17630.
60 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
61 the re-exporting nodes to be mounted with "32bitapi" mount option
63 --------------------------------------------------------------------------------
65 03-10-2015 Intel Corporation
67 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
68 for currently supported client and server kernel versions.
69 * Server known to build on patched kernels:
70 2.6.32-431.29.2.el6 (RHEL6.5)
71 2.6.32-504.8.1.el6 (RHEL6.6)
72 3.0.101-0.46 (SLES11 SP3)
73 * Client known to build on unpatched kernels:
74 2.6.32-431.29.2.el6 (RHEL6.5)
75 2.6.32-504.8.1.el6 (RHEL6.6)
76 3.10.0-123.20.1.el7 (RHEL7)
77 3.0.101-0.46 (SLES11 SP3)
78 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
79 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
80 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
81 stack overflow. For more information, please refer to bugzilla 17630.
82 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
83 the re-exporting nodes to be mounted with "32bitapi" mount option
85 Severity : enhancement
87 Description: control OST-index in IDIF via ROCOMPAT flag.
88 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
89 last_rcvd file. For new formatted OST device, it will be auto set;
90 for the case of upgrading from old OST device, you can enable it
91 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
92 enabled, for new created OST-object, its IDIF-in-LMA will contain
93 the OST-index; for the existing OST-object, the OSD will convert
94 old format IDIF as new format IDIF with OST-index stored in the
95 LMA EA when accessing such OST-object or via OI scrub. Once such
96 flag is enabled, it cannot be reverted back, so the system cannot
97 be downgraded to the orignal incompatible version.
99 --------------------------------------------------------------------------------
101 07-30-2014 Intel Corporation
103 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
104 for currently supported client and server kernel versions.
105 * Server known to build on patched kernels:
106 2.6.32-431.20.3.el6 (RHEL6.5)
107 3.0.101-0.31 (SLES11 SP3)
108 * Client known to build on unpatched kernels:
109 2.6.32-431.20.3.el6 (RHEL6.5)
110 3.0.101-0.31 (SLES11 SP3)
113 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
114 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
115 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
116 stack overflow. For more information, please refer to bugzilla 17630.
117 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
118 the re-exporting nodes to be mounted with "32bitapi" mount option
120 --------------------------------------------------------------------------------
122 10-31-2013 Intel Corporation
124 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
125 * Server builds for kernels:
126 2.6.32-358.18.1.el6 (RHEL6.4)
127 * Client builds for unpatched kernels:
128 2.6.32-358.18.1.el6 (RHEL6.4)
129 3.0.92-0.8 (SLES11 SP3)
131 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
132 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
133 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
134 stack overflow. For more information, please refer to bugzilla 17630.
135 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
136 the re-exporting nodes to be mounted with "32bitapi" mount option
138 --------------------------------------------------------------------------------
140 05-30-2013 Intel Corporation
142 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
143 * Server builds for kernels:
144 2.6.32-358.6.2.el6 (RHEL6.4)
145 * Client builds for unpatched kernels:
146 2.6.32-358.6.2.el6 (RHEL6.4)
147 3.0.74-0.6.6 (SLES11 SP2)
149 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
150 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
151 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
152 stack overflow. For more information, please refer to bugzilla 17630.
153 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
154 the re-exporting nodes to be mounted with "32bitapi" mount option
156 --------------------------------------------------------------------------------
158 9-30-2012 Whamcloud, Inc.
160 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
161 * Server support for kernels:
162 2.6.32-279.5.1.el6 (RHEL6)
163 * Client support for unpatched kernels:
164 2.6.32-279.5.1.el6 (RHEL6)
166 2.6.18-238.19.1.el5 (RHEL5)
167 2.6.16.60-0.69.1 (SLES10)
168 * Recommended e2fsprogs version: 1.41.90.wc4
169 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
170 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
171 stack overflow. For more information, please refer to bugzilla 17630.
172 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
173 the re-exporting nodes to be mounted with "32bitapi" mount option
175 Severity : enhancement
177 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
179 Severity : enhancement
181 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
183 Severity : enhancement
185 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
187 Severity : enhancement
189 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
191 Severity : enhancement
193 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
195 --------------------------------------------------------------------------------
197 04-30-2012 Whamcloud, Inc.
199 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
200 * Server support for kernels:
201 2.6.32-220.4.2.el6 (RHEL6)
202 * Client support for unpatched kernels:
203 2.6.32-220.4.2.el6 (RHEL6)
205 2.6.18-238.19.1.el5 (RHEL5)
206 2.6.16.60-0.69.1 (SLES10)
207 * Recommended e2fsprogs version: 1.41.90.wc4
208 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
209 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
210 stack overflow. For more information, please refer to bugzilla 17630.
211 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
212 the re-exporting nodes to be mounted with "32bitapi" mount option
214 Severity : enhancement
216 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
218 Severity : enhancement
220 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
222 Severity : enhancement
224 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
226 Severity : enhancement
228 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
230 --------------------------------------------------------------------------------
232 09-30-2011 Whamcloud, Inc.
234 * Server support for kernels:
235 2.6.18-238.19.1.el5 (RHEL5)
236 2.6.32-131.6.1.el6 (RHEL6)
237 * Client support for unpatched kernels:
238 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
239 2.6.18-238.19.1.el5 (RHEL5)
240 2.6.32-131.6.1.el6 (RHEL6)
241 2.6.29.4-167.fc11 (FC11)
242 2.6.16.60-0.69.1 (SLES10)
244 * Recommended e2fsprogs version: 1.41.90.wc3
245 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
246 Lustre filesystem with 4K stack may cause a stack overflow. For more
247 information, please refer to bugzilla 17630.
248 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
249 mounted with "32bitapi" mount option
251 Severity : enhancement
252 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
254 Severity : enhancement
255 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
257 Severity : enhancement
258 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
261 Frequency : only with SLES10
263 Description: Use OFED "KMP" provided by Novell
264 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
265 Lustre is now built against this package. That means you need to
266 install the ofed-kmp package from Novell for the patchless client.
267 Note that the ofed-kmp that Novell ships may not exactly match the
268 kernel version but should still be compatible.
270 Severity : enhancement
272 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
273 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
275 --------------------------------------------------------------------------------
277 2010-07-15 Oracle, Inc.
279 * Server support for kernels:
280 2.6.18-164.11.1.el5 (RHEL 5)
281 2.6.18-164.11.1.0.1.el5 (OEL 5)
282 * Client support for unpatched kernels:
283 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
284 2.6.18-164.11.1.el5 (RHEL 5),
285 2.6.18-164.11.1.0.1.el5 (OEL 5)
286 2.6.16.60-0.42.8 (SLES 10),
288 2.6.29.4-167.fc11 (FC11)
289 * Recommended e2fsprogs version: 1.41.10-sun2
291 Severity : enhancement
293 Description: Distribute lfs_migrate script with lustre
294 Details : The lfs_migrate mentioned in the manual is now included in the
295 lustre tree in lustre/scripts and will distributed in lustre RPMs.
297 Severity : enhancement
299 Description: Failover nid list added to import proc file.
301 Severity : enhancement
303 Description: "som_preview" mount option required to use SOM
304 Details : The clients will need to use som_preview mount option
308 Description: Lustre does not do 1MB IOs to HW RAID
309 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
311 Severity : enhancement
313 Description: lfs quota output is not very convenient for awk/sed-parsing
314 Details : Some positions in lfs quota output table could be empty or
315 non-empty which made it hard to parse it with scripts, now
316 a dash is put instead of space where there is not supposed
321 Description: Update to OFED 1.5.1
322 Details : OFED 1.5.1 will be used in environments that don't use
323 vendor supplied OFED.
327 Description: Remove lnet. prefix from lctl params display
328 Details : Also renamed lnet.memused to lnet_memused to
333 Description: Use conf_param -d to remove permanant settings.
337 Description: Add list_param -R
338 Details : lctl list_param now supports recursive mode.
341 Bugzilla : 21829, 22312
342 Description: Fix llobdstat.
343 Details : 1. Now updating the write_bytes counter
344 2. Port script fixes from 1.8.
348 Description: decrease the usage of memory on clients.
349 Details : 1. On clients, recycle dentries and inodes unused.
350 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
355 Description: llobdstat fix and enhancement
356 Details : add a counter to set a limit to how many samples will be returned
357 fix a wildcard in the path to limit to obdfilter stats only
361 Description: lfs check only allowed for root
362 Details : Code cleanups and added a regresion test of non-root use of
367 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
368 Details : Fix hr->hr_index overload.
372 Description: Fix FIEMAP functionality.
376 Description: FC11 patchless client support added
380 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
381 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
385 Description: New acc-sm script and various test-framework enhancments.
389 Description: Previously landed patch was reverted.
393 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
397 Description: Add ldiskfs maxdirsize mount option.
401 Description: Fix mkfs.lustre support for 16TB LUNs.
405 Description: Print mmp_check_interval
406 Details : print mmp_check_interval and make it possible to abort
407 mount operation in case it takes too long.
411 Description: Add cascading_rw to lustre mpi tests.
415 Description: Store SOM data in EA.
416 Details : Also several SOM related cleanups.
420 Description: Add refcount to md_open_data
424 Description: Use refcount on lov_request_set to prevent memory corruption.
428 Description: Statahead: use parent dir's i_mutex for synchronization.
432 Description: loadgen improvements.
436 Description: Enable peer health detection in ksocklnd and ko2iblnd.
440 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
444 Description: Fix race on obd_devcie:md_stats
448 Description: Fix SLES 11 client builds.
449 Details : Resolved uninitalized pointer gcc warnings.
453 Description: Allow non-root access for "lfs check".
454 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
458 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
460 Severity : enhancement
462 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
463 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
467 Description: Sanity test_27p fails.
468 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
469 Sanity tests 27 were cleaned up and improved.
473 Description: Unify req format on client/servers
474 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
475 buffers and swabbers approach..
480 Description: drop join file stuff.
482 Severity : enhancement
484 Description: Add 2.6.27 and SLES11 (patchless client) support
488 Description: Fix in ptlrpc_expire_one_request() to print the signed time
491 Severity : enhancement
493 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
496 Severity : enhancement
498 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
500 Severity : enhancement
502 Description: correctly handle big reply message.
503 Details : send LNet event if reply is bigger than buffer and adjust this buffer
508 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
510 Severity : enhancement
512 Description: Add support for OEL5.
516 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
518 Severity : enhancement
520 Description: "weak-modules" support
521 Details : Implement "weak-modules" support which enables kernel modules
522 to be used with any kernel that implements the same kABI. In
523 order to achieve this modules are now installed in
524 /lib/modules/$(uname -r)/updates/kernel on all distributions.
528 Description: client could not reconnect to OST because of an active request.
529 Details : The client now retries to reconnect to the same server, if a
530 connect request failed with EBUSY or -EAGAIN. Test case 35b
531 conf-sanity.sh has been created.
535 Description: Don't allow make backward step on assignin osc next id.
536 Details : race between allocation next id and ll_sync thread can be cause
537 of set wrong osc next id and can be kill valid ost objects.
541 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
545 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
549 Description: Error handling in osc_statfs_interpret() has been improved.
550 Details : Check in osc_statfs_interpret() for EBADR.
554 Description: Do not send statfs() requests to OSTs disabled by administrator.
555 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
557 Severity : enhancement
559 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
561 Severity : enhancement
563 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
565 Severity : enhancement
567 Description: Enhancement for lfs(1) command to use numeric uid/gid.
571 Description: Improved cleanup procedure for conf-sanity test_46a.
575 Description: Do not start bulk transfer, if client tried to reconnect.
576 Details : Do not start bulk transfer, if client tried to reconnect,
577 but failed due to active rpcs. Check for exp_abort_active_req
578 has been implemented.
582 Description: Prevent inconsistences between linux and lustre mount structures.
583 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
584 Make the sleep interruptible.
586 Severity : enhancement
588 Description: provide server to client comms path
589 Details : server to client communications path via new LDLM_SET_INFO rpc
593 Description: truncate starts GFP_FS allocation under transaction causing deadlock
594 Details : ldiskfs_truncate calls grab_cache_page which may start page
595 allocation under an open transaction. This may lead to
596 calling prune_icache with consequent lustre reentrance.
600 Description: send correctly lsm on open replay
601 Details : MDS is trust to LSM size on replay open, but client can set wrong size
606 Description: enable client interface failover
607 Details : When a child reconnects from another NID, properly update export
608 nid hash position and ldlm reverse import.
610 Severity : enhancement
612 Description: Communicate OST degraded/readonly state via statfs to MDS
613 Details : Flags in the statfs returned from OSTs indicate whether the
614 OST is in a degraded RAID state, or if the filesystem has
615 turned read-only after a filesystem error is detected.
620 Description: don't panic if EPROTO was hit when reading symlink
621 Details : correctly handling request reference in error cases.
623 Severity : enhancement
625 Description: Add LustreNetLink, a kernel-userspace communcation path.
627 Severity : enhancement
629 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
634 Description: access to llog context before init.
635 Details : move handling CATALOGS file at osc layer and forbid access to llog
639 Frequency : rare, only when client is writing to OST on local node
641 Description: Avoid deadlock for local client writes
642 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
643 memory freeing context. This allows OST threads to set the
644 PF_MEMALLOC flag on task structures in order to allocate memory
645 from reserved pools and complete IO.
646 Use GFP_HIGHUSER for OST allocations for non-local client writes,
647 so that the OST threads generate memory pressure and allow
648 inactive pages to be reclaimed.
650 Severity : enhancement
652 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
657 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
658 Details : move ldlm namespace creation in setup phase to avoid grab
659 _lprocfs_lock with cli_sem held.
663 Description: Temporarily disable grant shrink.
664 Details : Disable the feature for debugging.
667 Frequency : only when formatting test filesystems
669 Description: Unable to run several mkfs.lustre on loop devices at the same time
670 Details : mkfs.lustre returns error 256 on the concurrent loop devices
671 formatting. The solution is to proper handle the error.
673 Severity : enhancement
675 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
677 Severity : enhancement
679 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
684 Description: resolve race between obd_disconnect and class_disconnect_exports
685 Details : if obd_disconnect will be called to already disconnected export he
686 forget release one reference and osc module can't unloaded.
688 Severity : enhancement
690 Description: Allow tuning service thread via /proc
691 Details : For each service a new
692 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
693 created that can be used to set min/max thread counts, and get the
694 current number of running threads.
699 Descriptoin: don't return error if have partially created objects for file.
700 Details : lov_update_create_set uses set->set_success as index for created
701 objects, so if some requests will be failed, they will have hole
702 at end of array and qos_shrink_lsm for allocate correct lsm.
704 Severity : enhancement
706 Description: Update OFED support to 1.4.1
711 Description: Reduce small size read RPC
712 Details : Set read-ahead limit for every file and only do read-ahead when
713 available read-ahead pages are bigger than 1M to avoid small size
716 Severity : enhancement
718 Description: move AT tunable parameters for more consistent usage
719 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
721 Severity : enhancement
723 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
724 Details : allow skip disconnected ost for send statfs request and hide error
730 Description: fix racy locking of mballoc block bitmaps causing BUG
731 Details : The locking of the mballoc buddy bitmap and the in-memory
732 block bitmap was using two different spin locks in some
733 cases. This made it possible to incorrectly access the
734 mballoc bitmap while another process was modifying it,
735 causing a sanity assertion to fail. While no on-disk corruption
736 was reported, there was some risk of this happening.
739 Frequency : rare, on llog test 6
741 Descriptoin: don't allow connect to already connected import
742 Details : allowing connect to already connected import is hide connecting problem.
747 Descriptoin: allow kill process which wait statahead result
748 Details : for some reasons 'ls' can stick in waiting result from statahead,
749 in this case need way for kill this process.
751 Severity : enhancement
753 Description: Add state history info file, enhance import info file
754 Details : Track import connection state changes in a new osc/mdc proc file;
755 add overview-type data to the osc/mdc import proc file.
757 Severity : enhancement
759 Description: MDS create should not wait for statfs RPC while holding DLM lock.
761 Severity : enhancement
763 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
768 Descriptoin: OST grant too much space to client even there are not enough space.
769 Details : Client will shrink its grant cache to OST if there are no write
770 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
771 this grant cache if there are already not enough avaible space
772 (left_space < total_clients * 32M).
775 Frequency : start MDS on uncleanly shutdowned MDS device
777 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
778 Details : stay in waiting mds<>ost recovery finished produce random bugs
779 due race between two ll_sync thread for one lov target. send
780 ACTIVATE event only if connect realy finished and import have
784 Frequency : rare, connect and disconnect target at same time
786 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
787 Details : don't call obd_disconnect under lov_lock. this long time
788 operation and can block ptlrpcd which answer to connect request.
793 Descriptoin: don't lose wakeup for imp_recovery_waitq
794 Details : recover_import_no_retry or invalidate_import and import_close can
795 both sleep on imp_recovery_waitq, but we was send only one wakeup
799 Frequency : always with long access acl
801 Descriptoin: mds can't pack reply with long acl.
802 Details : mds don't control size of acl but they limited by reint/getattr
805 Severity : enhancement
807 Description: Update to SLES10 kernel-2.6.16.60-0.33.
809 Severity : enhancement
811 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
814 Frequency : start MDS on uncleanly shutdowned MDS device
816 Descriptoin: aborting recovery hang on MDS
817 Details : don't throttle destroy RPCs for the MDT.
820 Frequency : on remount
822 Description: external journal device not working after the remount
823 Details : clear dev_rdonly flag for external journal devices in
829 Description: shutdown vs evict race
830 Details : client_disconnect_export vs connect request race.
831 if client will evicted at this time - we start invalidate
832 thread without referece to import and import can be freed
836 Frequency : rare, need acl's on inode.
838 Description: client can't handle ost additional correctly
839 Details : if ost was added after client connected to mds client can have
840 hit lnet_try_match_md ... to big messages to wide striped files.
841 in this case need teach client to handle config events about add
842 lov target and update client max ea size at that event.
844 Severity : enhancement
846 Description: Changelogs
847 Details : Changelogs are a lightweight mechanism to track filesystem
848 metadata and namespace changes. The changelog is recorded
849 permanently on the MDTs, and is periodically "consumed" / purged
850 when records are no longer needed.
852 Severity : enhancement
854 Description: compact fld format with extents
855 Details : Store range of seq rather than every seq in FLD. Seq
856 controller update FLD rather than clients. In Case of CMD, mdt0
857 has FLD, all other metadata server act as non persistent proxy
858 for FLD queries and cache fld entries in fld cache.
863 Description: don't skip ost target if they assigned to file
864 Details : Drop slow OSCs if we can, but not for requested start idx.
865 This means "if OSC is slow and it is not the requested
866 start OST, then it can be skipped, otherwise skip it only
867 if it is inactive/recovering/out-of-space.
871 Description: more cleanup in mds_lov
872 Details : not send LOV EA under replay, we can't know about they size at this
873 time. Don't allow client connect to mds before any ost connected,
874 for avoid problems with LOV EA size and returning EIO to client.
876 Severity : enhancement
878 Description: Interoperability at server side (Disk interoperability)
880 Severity : enhancement
882 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
884 Severity : enhancement
886 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
888 Severity : enhancement
890 Description: New client IO stack (CLIO).
892 Severity : enhancement
894 Description: Commit on sharing. Eliminate inter-client dependencies between
895 uncommitted transactions by doing transaction commits.
896 Thereby clients may recovery independently.
899 Frequency : Create a symlink file with a very long name
901 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
902 Details : If there is no extra space in the request for early cancels,
903 ldlm_req_handles_avail() returns 0 instead of a negative value.
905 Severity : enhancement
907 Description: Add /proc entry for import status
908 Details : The mdc, osc, and mgc import directories now have
909 an import directory that contains useful import data for debugging
912 Severity : enhancement
914 Description: Re-disable certain /proc logging
915 Details : Enable and disable client's offset_stats, extents_stats and
916 extents_stats_per_process stats logging on the fly.
919 Frequency : Only on FC kernels 2.6.22+
921 Description: oops in statahead
922 Details : Do not drop reference count for the dentry from VFS when lookup,
923 VFS will do that by itself.
925 Severity : enhancement
927 Description: Generic /proc file permissions
928 Details : Set /Proc file permissions in a more generic way to enable non-
929 root users operate on some /proc files.
933 Description: Hitting mdc_commit_close() ASSERTION
934 Details : Properly handle request reference release in
935 ll_release_openhandle().
939 Description: quota recovery deadlock during mds failover
940 Details : This patch includes att18982, att18236, att18237 in bz14840.
942 1. fix osts hang when mds does failover with quotaon
943 2. prevent watchdog storm when osts threads wait for the
948 Frequency : only patchless client
949 Description: add workaround for race between add/remove dentry from hash
951 Severity : enhancement
953 Description: Allow OST glimpses to return PW locks
957 Description: LBUG when llog conf file is full
958 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
962 Description: Prevent import from entering FULL state when server in recovery
966 Description: service mount cannot take device name with ":"
967 Details : Only when device name contains ":/" will mount treat it as
973 Description: replace ptlrpcd with the statahead thread to interpret the async
974 statahead RPC callback
978 Frequency : on recovery
979 Description: I/O failures after umount during fail back
980 Details : if client reconnected to restarted server we need join to recovery
981 instead of find server handler is changed and process self
982 eviction with cancel all locks.
984 Severity : enhancement
986 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
988 Severity : enhancement
990 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
992 Severity : enhancement
994 Description: Upcall on Lustre log has been dumped
995 Details : Allow for a user mode script to be called once a Lustre log has
996 been dumped. It passes the filename of the dumped log to the
997 script, the location of the script can be specified via
998 /proc/sys/lnet/debug_log_upcall.
1003 Description: avoid idr_remove called for id which is not allocated.
1004 Details : Move assigment s_dev for clustered nfs to end of initialization,
1005 to avoid problem with error handling.
1010 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
1011 Details : When connection is reused this not moved from CONN_UNUSED_HASH
1012 into CONN_USED_HASH and this prodice warning when put connection
1013 again in unused hash.
1016 Severity : enhancement
1018 Description: File striping can now be set to use an arbitrary pool of OSTs.
1020 Severity : enhancement
1022 Description: Export bytes_read/bytes_write count on OSC/OST.
1026 Description: Early reply size mismatch, MGC loses connection
1027 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
1028 the connect flags are properly negotiated.
1033 Description: quotas are not honored with O_DIRECT
1034 Details : all writes with the flag O_DIRECT will use grants which leads to
1035 this problem. Now using OBD_BRW_SYNC to guard this.
1039 Description: add quota statistics
1040 Details : 1. sort out quota proc entries and proc code.
1041 2. add quota statistics
1043 Severity : enhancement
1045 Description: enable quota support for HEAD.
1049 Description: Properly propagate oinfo flags from lov to osc for statfs
1050 Details : restore missing copy oi_flags to lov requests.
1052 Severity : enhancement
1054 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
1055 : l_getgroups(8), lst(8), routerstat(8)
1056 Details : included man pages for llobdstat(8), llstat(8),
1057 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
1059 Severity : enhancement
1061 Description: configure's --enable-quota should check the
1062 : kernel .config for CONFIG_QUOTA
1063 Details : configure is terminated if --enable-quota is passed but
1064 : no quota support is in kernel
1068 Description: Remove portals compatibility
1069 Details : Remove portals compatibility, not interoperable with releases
1074 Description: Resolve device initialization race
1075 Details : Prevent proc handler from accessing devices added to the
1076 obd_devs array but yet be intialized.
1078 Severity : enhancement
1080 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1082 Severity : enhancement
1084 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1089 Description: Using wrong pointer in osc_brw_prep_request
1090 Details : Access to array[-1] can produce panic if kernel compiled with
1091 CONFIG_PAGE_ALLOC enabled
1095 Description: Client runs out of low memory
1096 Details : Consider only lowmem when counting initial number of llap pages
1100 Description: *optional* service tags registration
1101 Details : if the "service tags" package is installed on a Lustre node
1102 When the filesystem is mounted, a local-node service tag will
1103 be created. See http://inventory.sun.com/ for more information
1104 about the Service Tags asset management system.
1108 Description: Kernel BUG tries to release flock
1109 Details : Lustre does not destroy flock lock before last reference goes
1110 away. So always drop flock locks when client is evicted and
1111 perform unlock regardless of successfulness of speaking to MDS.
1115 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1119 Description: sanity test 65a fails if stripecount of -1 is set
1120 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1125 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1126 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1129 Severity : enhancement
1131 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1135 Description: do not process already freed flock
1136 Details : flock can possibly be freed by another thread before it reaches
1137 to ldlm_flock_completion_ast.
1141 Description: LBUG during stress test
1142 Details : Need properly lock accesses the flock deadlock detection list.
1146 Description: oops in page fault handler
1147 Details : kernel page fault handler can return two special 'pages' in error
1148 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1152 Description: timeout with invalidate import.
1153 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1154 should be handled by ptlrpcd. This produce long age waiting and
1155 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1157 Severity : enhancement
1159 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1163 Description: enable MGS and MDT services start separately
1164 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1165 a co-located MGS without starting the MGS, which is a complement
1166 to 'nosvc' mount option.
1170 Frequency : after recovery
1171 Description: precreate to many object's after del orphan.
1172 Details : del orphan st in oscc last_id == next_id and this triger growing
1173 count of precreated objects. Set flag LOW to skip increase count
1174 of precreated objects.
1178 Frequency : rare, on clear nid stats
1179 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1180 Details : when clean nid stats sometimes try destroy live entry,
1181 and this produce panic in free.
1185 Description: Stack overflow during MDS log replay
1186 ease stack pressure by using a thread dealing llog_process.
1190 Description: wait until IO finished before start new when do lock cancel.
1191 Details : VM protocol want old IO finished before start new, in this case
1192 need wait until PG_writeback is cleared until check dirty flag and
1193 call writepages in lock cancel callback.
1195 Severity : enhancement
1197 Description: using special macro for print time and cleanup in includes.
1201 Description: mds_mfd_close() ASSERTION(rc == 0)
1202 Details : In mds_mfd_close(), we need protect inode's writecount change
1203 within its orphan write semaphore to prevent possible races.
1207 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1211 Frequency : rare, on shutdown ost
1212 Description: don't hit live lock with umount ost.
1213 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1214 use shrink_dcache_sb instead.
1218 Description: don't panic with use echo client
1219 Details : echo client pass NULL as client nid pointer and this produce null
1220 pointer dereference.
1224 Description: fix build on ppc32
1225 Details : compile code with -m64 flag produce wrong object file for ppc32.
1229 Description: add message levels for liblustreapi
1233 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1234 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1235 will result in an -EAGAIN and in the exit call path we call
1236 alloc_rr() which will with increasing aggressiveness attempt to
1237 aquire precreated objects on the minimum number of required OSCs.
1241 Description: Use old size assignment to avoid deadlock
1242 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1243 the scheduling while holding a spinlock. We do not need locking
1244 for size in ll_update_inode() because size is only updated from
1245 the MDS for directories or files without objects, so there is no
1246 other place to do the update, and concurrent access to such inodes
1247 are protected by the inode lock.
1251 Description: resolve "_IOWR redefined" build error on SLES10
1255 Description: dump the memory debugging after all modules are unloaded to
1256 suppress false negative in conf_sanity test 39
1258 Severity : enhancement
1260 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1265 Description: fix SLES kernel versioning
1266 Details : the kernel version for our SLES 10 kernel did not include a "-"
1267 before the "smp" at the end. while this was not a problem in
1268 general, it did mean that software trying to use the kernel
1269 version to try to detect a vendor specific kernel would fail.
1270 this was most evident by the OFED build scripts.
1274 Description: Don't update lov_desc members until making sure they are valid
1275 Details : When updating lov_desc members via proc fs, need fix their
1276 validities before doing the real update.
1280 Description: don't put request into delay list while invalidate in flight.
1281 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1282 import in flight. this produce timeout for invalidate and sometimes
1283 can cause stale data.
1287 Frequency : on ppc only
1288 Description: not convert ost objects for directory because it's not exist.
1289 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1293 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1295 Severity : enhancement
1297 Description: Update to support 2.6.22.14 vanilla kernel.
1301 Frequency : rare, on recovery
1302 Description: read procfs can produce deadlock in some situation
1303 Details : Holding lprocfs lock which send rpc can produce block for destroy
1304 obd objects and this also block reconnect with -EALREADY. This
1305 isn't fix all lprocfs bugs - but make it rare.
1307 Severity : enhancement
1309 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1312 Frequency : frequent on X2 node
1314 Description: mdc_set_open_replay_data LBUG
1315 Details : Set replay data for requests that are eligible for replay.
1319 Description: lustre_mgs: operation 101 on unconnected MGS
1320 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1321 MGC, and late on MGC cannot successfully connect to MGS and a lot
1322 of the error messages complaining that MGS is not connected.
1326 Frequency : on network error
1327 Description: panic with double free request if network error
1328 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1329 but it's true only for synchronus enqueue, for async enqueue
1330 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1333 Severity : enhancement
1335 Description: client-side metadata stat-ahead during readdir(directory readahead)
1336 Details : perform client-side metadata stat-ahead when the client detects
1337 readdir and sequential stat of dir entries therein
1340 Frequency : on start mds
1342 Description: Implement get_info(last_id) in obdfilter.
1345 Frequency : occasional
1347 Description: Correctly check stale fid, not start epoch if ost not support SOM
1348 Details : open with flag O_CREATE need set old fid in op_fid3 because
1349 op_fid2 was overwritten with new generated fid, but mds can answer
1350 with one of these two fids and both is not stale. Setattr
1351 incorrectly started an epoch and assume will be called
1352 done_writing, but without SOM done_writing ever being called.
1355 Frequency : rare, depends on device drivers and load
1357 Description: MDS or OSS nodes crash due to stack overflow
1358 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1359 In some cases, in conjunction with device drivers that use a lot
1360 of stack the MDS (or possibly OSS) service threads could overflow
1361 the stack. One change which was identified to consume additional
1362 stack has been reworked to avoid the extra stack usage.
1365 Frequency : occasional
1367 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1368 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1369 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1370 oscc_has_objects and see OSC has no objests and call
1371 oscc_internal_create to resend create request.
1373 Severity : enhancement
1375 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1377 Severity : enhancement
1379 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1382 Frequency : very rare
1384 Description: Fix replay if there is an un-replied request and open
1385 Details : In some cases, older replay request will revert the
1386 mcd->mcd_last_xid on MDS which is used to record the client's
1387 latest sent request.
1389 Severity : enhancement
1391 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1393 Severity : enhancement
1395 Description: Add rhel5 support to HEAD.
1397 Serverity : enhancement
1399 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1404 Description: Don't allow skipping OSTs if index has been specified.
1405 Details : Don't allow skipping OSTs if index has been specified, make
1406 locking in internal create lots better.
1410 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1411 Details : access to bitfield in structure is always rounded to long
1412 and this produce problem with not atomic change any bit.
1416 Description: Lustre make rpms failed.
1417 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1418 builds Lustre rpms from tarball.
1421 Frequency : rare on shutdown ost
1423 Description: If llog cancel was not send before clean_exports phase, this can
1424 produce deadlock in llog code.
1425 Details : If llog thread has last reference to obd and call class_import_put
1426 this produce deadlock because llog_cleanup_commit_master wait when
1427 last llog_commit_thread exited, but this never success because was
1428 called from llog_commit_thread.
1432 Description: allow userland application know is lost one of stripes.
1433 Details : fill lvb_blocks with error code on ost and return it to
1434 application if error flag found.
1438 Description: NULL lov_tgts causing MDS oops
1439 Details : more safe checks for NULL lov_tgts for avoid oops.
1441 Severity : enhancement
1443 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1447 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1448 Details : If an OST is down the MDS will hang indefinitely in
1449 obd_statfs_rqset() waiting for the statfs data. While for
1450 MDS QOS usage of statfs, it should not stuck in waiting.
1452 Severity : enhancement
1454 Description: remote_acl support
1455 Details : Support ACL-based permission check for remote user.
1456 Support setfacl/getfacl for remote user with the utils
1457 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1458 the system "{s,g}etfacl" utils.
1460 Severity : enhancement
1462 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1464 Severity : enhancement
1466 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1470 Description: make mgs_setparam() handle fsname containing dash
1471 Details : fsname containing a dash does not work with lctl conf_param
1473 Severity : enhancement
1475 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1477 Severity : enhancement
1479 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1483 Frequency : rare, at shutdown
1484 Description: access already free / zero obd_namespace.
1485 Details : if client_disconnect_export was called without force flag set,
1486 and exist connect request in flight, this can produce access to
1487 NULL pointer (or already free pointer) when connect_interpret
1488 store ocd flags in obd_namespace.
1492 Frequency : only at startup
1493 Description: not alloc memory with spinlock held.
1494 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1495 if any spinlock held.
1497 Severity : enhancement
1499 Description: make lustre randomly fail allocating memory
1500 Details : Make lustre randomly failed allocating memory for testing purpose.
1502 Severity : enhancement
1504 Description: lost problems with lov objid file
1505 Details : Fixes some scability and access to not inited memory problems
1506 in work with lov objdid file.
1511 Description: lfs find does not continue on file error
1512 Details : Continue other files processing when a file/dir is absent.
1516 Description: Inconsistent usage of lustre_pack_reply()
1517 Details : Standardize the usage of lustre_pack_reply() such that it
1518 always generate a CERROR on failure.
1521 Frequency : occasional
1523 Description: MDS hang or stay in waiting lock
1524 Details : If client receive lock with CBPENDING flag ldlm need send lock
1525 cancel as separate rpc, to avoid situation when cancel request
1526 can't processed due all i/o threads stay in wait lock.
1530 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1534 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1538 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1542 Description: Update to RHEL4 latest kernel.
1544 Severity : enhancement
1546 Description: Build SLES10 patchless client fails
1547 Details : The configure was broken by run ./configure with
1548 --with-linux-obj=.... argument for patchless client. When the
1549 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1550 can't search header adequately. Use absolute path such as
1551 -I($LINUX)/include instead.
1555 Description: interrupt oig_wait produce painc on resend.
1556 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1557 private set, and this produce situation when rq_ptlrpcd_data not
1558 copyed to new allocated request and triggered LBUG on assert
1559 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1560 ptlrpcd set if request is changed and can be safety changed to use
1565 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1566 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1567 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1568 these macros and replace them with their difinitions instead.
1572 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1573 Details : Update which_patch & target file for SLES10 latest kernel.
1576 Description: Remove client patches from SLES 10 kernel.
1577 Details : This causes SLES 10 clients to behave as patchless clients
1578 even on a Lustre-patched (server) kernel.
1580 Severity : enhancement
1582 Description: self-adjustable client's lru lists
1583 Details : use adaptive algorithm for managing client cached locks lru
1584 lists according to current server load, other client's work
1585 pattern, memory activities, etc. Both, server and client
1586 side namespaces provide number of proc tunables for controlling
1589 Severity : enhancement
1591 Description: light-weight GSS support
1592 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1593 and reduce performance overhead.
1595 Severity : enhancement
1597 Description: Linux keyring support
1598 Details : Support using service of Linux keyring for Lustre GSS internal
1599 context refresh/cache mechanism.
1603 Description: Fix errors in lfs documentation
1604 Details : Fixes man pages
1608 Description: don't use GFP_* in generic Lustre code.
1609 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1613 Description: obdclass is limited by single OBD_ALLOC(idarray)
1614 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1618 Description: warnings with build patchless client with vanila 2.6.19 and up
1619 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1620 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1624 Frequency : Only for SLES
1625 Description: sanity_quota fail test_1
1626 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1627 file, which makes TSTID[2] inunique.
1631 Frequency : Only for SLES9
1632 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1633 Details : Update target/ChangeLog/which_patch .
1637 Frequency : Only for test_10 in sanity-quota.sh
1638 Description: a bug in quota test code
1639 Details : checking a test flag in a wrong place
1643 Frequency : Only for test_13 in sanity-quota.sh
1644 Description: a bug in quota test script
1645 Details : shouldn't check overfull allocated quota
1649 Description: jbd statistics
1650 Details : Port older jbd statistics patch for sles10
1652 Severity : enhancement
1654 Description: Add printing inode info into message about error in writepage.
1659 Description: reply_lock_interpret crash due to race with it and lock cancel.
1660 Details : Do not replay locks that are being cancelled. Do not reference
1661 locks by their address during replay, just by their handle.
1665 Frequency : When flocks are used.
1666 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1667 Details : Flock locks might destroy just granted lock if it could be merged
1668 with another existing flock, this is done in completion handler,
1669 so teach ldlm_cli_enquque_fini that this is a valid case for
1675 Description: Oops in read and write path when failing to allocate lock.
1676 Details : Check if lock allocation failed and return error back.
1680 Description: lstripe command fails for valid OST index
1681 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1682 instead of lov->desc.ld_active_tgt_count.
1686 Description: sanity.sh failed test 103
1687 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1692 Description: df doesn't work properly if diskfs blocksize != 4K
1693 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1697 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1698 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1700 Severity : enhancement
1702 Description: Adaptive timeouts
1703 Details : RPC timeouts adapt to changing server load and network
1704 conditions to reduce resend attempts and improve recovery time.
1708 Description: llapi_file_create() does not allow some changes
1709 Details : add llapi_file_open() that allows specifying the mode and
1710 open flags, and also returns an open file handle.
1714 Description: merge and cleanup kernel patches.
1715 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1719 Description: Add journal checksum support.(Kernel part)
1720 Details : The journal checksum feature adds two new flags i.e
1721 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1722 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1723 indicates that the commit block contains the checksum for
1724 the blocks described by the descriptor blocks. Now commit
1725 record can be sent to disk without waiting for descriptor
1726 blocks to be written to disk. This behavior is controlled
1727 using JBD2_FEATURE_ASYNC_COMMIT flag.
1731 Description: OSS needs mutliple precreate threads
1732 Details : Add ability to start more than one create thread per OSS.
1736 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1737 Details : execute lfs setstripe on client
1741 Description: mds_obd_create error creating tmp object
1742 Details : When the user sets quota on root, llog will be affected and can't
1743 create files and write files.
1746 Frequency : Always on ia64 patchless client, and possibly others.
1748 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1749 Details : This allows the patchless client to be loaded on architectures
1750 without this export.
1754 Description: RedHat Update kernel for RHEL5
1755 Details : Add the kernel config file for RHEL5.
1759 Description: RedHat Update kernel for RHEL5
1760 Details : Modify the kernel config file more closer RHEL5.
1764 Description: Build failure against Centos5 (RHEL5)
1765 Details : Define PAGE_SIZE when it isn't present.
1769 Description: test_7 on sanity-quota.sh can't be used on separate machines
1770 Details : add facet to handle it
1774 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1775 Details : with NFS, the anon dentry's parent was set to itself in
1776 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1777 corresponding dentry other than use rec->ur_name.
1779 Severity : enhancement
1781 Description: lfs setstripe enhancement
1782 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1786 Description: enable data checksumming by default
1787 Details : enable checksum by default, allow --disable-checksum
1788 configure option and "-o nochecksum" mount option. Checksums
1789 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1793 Description: lustre support for RHEL5
1794 Details : Add support for RHEL5.
1798 Description: Client eviction due to failover config
1799 Details : after a connection loss, the lustre client should attempt to
1800 reconnect to the last active server first before trying the
1801 other potential connections.
1805 Description: when mds and osts use different quota unit(32bit and 64bit),
1806 quota will be released repeatly.
1807 Details : void sending multiple quota reqs to mds, which will keep the
1808 status between the reqs.
1812 Description: osts not allocated evenly to files
1813 Details : change the condition to increase offset_idx
1816 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1818 Description: Data corruption for OSTs that are formatted larger than 2TB
1820 Details : When generating the bio request for lustre file writes the
1821 sector number would overflow a temporary variable before being
1822 used for the IO. The data reads correctly from Lustre (which
1823 will overflow in a similar manner) but other file data or
1824 filesystem metadata may be corrupted in some cases.
1828 Description: Tune the kernel for good SCSI performance.
1829 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1830 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1835 Description: rewrite ext2-derived code in obdclass/uuid.c
1836 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1837 from scratch preserving functionality.
1841 Description: "lfs find -obd UUID" prints directories
1842 Details : "lfs find -obd UUID" will return all directory names instead
1843 of just file names. It is incorrect because the directories
1844 do not reside on the OSTs.
1848 Description: use i_size_read and i_size_write in 2.6 port
1849 Details : replace inode->i_size access with i_size_read/write()
1852 Frequency : when removing large files
1854 Description: scheduling issue during removal of large Lustre files
1855 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1856 It causes scheduling issues when removing large files (17TB in the
1860 Frequency : only with liblustre clients on XT3
1862 Description: evictions taking too long
1863 Details : allow llrd to evict clients directly on OSTs
1866 Frequency : only on ppc
1868 Description: /proc/fs/lustre/devices broken on ppc
1869 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1870 We should make sure the type of 'index' is loff_t and then cast
1871 explicitly as needed below. Do not assign an explicitly cast
1875 Frequency : only for rhel5
1877 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1878 Details : Modify the target file & which_kernel.
1880 Severity : enhancement
1882 Description: omit set fsid for export NFS
1883 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1884 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1888 Frequency : Always, for kernels after 2.6.16
1889 Description: Fix warning idr_remove called for id=.. which is not allocated.
1890 Details : Last kernels save old s_dev before kill super and not allow
1891 to restore from callback - restore it before call kill_anon_super.
1895 Description: buffer overruns could theoretically occur
1896 Details : llapi_semantic_traverse() modifies the "path" argument by
1897 appending values to the end of the origin string, and a
1898 overrun may occur. Adding buffer overrun check in liblustreapi.
1902 Description: Fix error on 'ls .' at the top of the Lustre mount.
1903 Details : Don't revalidate dentry if it is a root dentry.
1907 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1908 Details : Modify vm-tunables-rhel4.patch.
1912 Description: Kernel config for 2.6.18-vanilla.
1913 Details : Modify targets/2.6-vanilla.target.in.
1914 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1915 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1916 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1917 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1921 Description: improve handling recoverable errors
1922 Details : if request processig with error which can be recoverable on server
1923 request should be resend, otherwise page released from cache and
1928 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1929 Details : Modify target file & which_patch.
1930 A flaw was found in the IA32 system call emulation provided
1931 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1932 value could be stored in the %RAX register, which could trigger an
1933 out-of-bounds system call table access. An untrusted local user
1934 could exploit this flaw to run code in the kernel
1935 (ie a root privilege escalation). (CVE-2007-4573).
1939 Description: O_DIRECT bypasses client statistics.
1940 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1941 read_ahead_stats were updated. copied the stats section from
1942 osc_send_oap_rpc() into async_internal().
1946 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1950 Description: change order of libsysio includes
1951 Details : '#include sysio.h' should always come before '#include xtio.h'
1955 Description: handle "serious error: objid * already exists" more gracefully
1956 Details : If LAST_ID value on disk is smaller than the objects existing in
1957 the O/0/d* directories, it indicates disk corruption and causes an
1958 LBUG(). If the object is 0-length, then we should use the existing
1959 object. This will help to avoid a full fsck in most cases.
1961 Severity : enhancement
1963 Description: adapt the lustre_config script to support the upgrade case
1964 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1965 server targets to 1.6 in parallel.
1969 Description: To avoid grant space > avaible space when the disk is almost
1970 full. Without this patch you might see the error "grant XXXX >
1971 available" or some LBUG about grant, when the disk is almost
1973 Details : In filter_check_grant, for non_grant cache write, we should
1974 check the left space by if (*left > ungranted + bytes), instead
1975 of (*left > ungranted), because only we are sure the left space
1976 is enough for another "bytes", then the ungrant space should be
1977 increase. In client, we should update cl_avail_grant only there
1978 is OBD_MD_FLGRANT in the reply.
1982 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1983 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1984 described in CVE-2007-4573. This problem could allow untrusted
1985 local users to gain root access.
1988 Frequency : when using O_DIRECT and quotas
1990 Description: Incorrect file ownership on O_DIRECT output files
1991 Details : block usage reported by 'lfs quota' does not take into account
1992 files that have been written with O_DIRECT.
1997 Description: touch file failed when fs is not full
1998 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1999 otherwise we can get ENOSP while fs is not full.
2003 Description: parallel lock callbacks
2004 Details : Instead of sending blocking and completion callbacks as separated
2005 requests, adding them to a set and sending in parallel.
2008 Frequency : only for Cray XT3
2009 Bugzilla : 12829/13455
2010 Description: Changing primary group doesn't change the group lustre assigns to
2012 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
2013 overridden with the primary group provided by the group upcall,
2014 whereas the supplied fsgid can be trusted if it is in the list of
2015 supplementary groups returned by the group upcall.
2017 Severity : enhancement
2019 Description: Allow masking D_WARNING, D_ERROR messages from console
2020 Details : Console messages can now be disabled via lnet.printk.
2024 Description: User code with malformed file open parameter crashes client node
2025 Details : Before packing join_file req, all the related reference should be
2026 checked carefully in case some malformed flags cause fake
2027 join_file req on client.
2031 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
2032 Details : ldlm_completion_ast() assumes that a lock is granted when the req
2033 mode is equal to the granted mode. However, it should also check
2034 that LDLM_FL_CP_REQD is not set.
2038 Description: Heavy nfs access might result in deadlocks
2039 Details : After ELC code landed, it is now improper to enqueue any mds
2040 locks under och_sem, because enqueue might want to decide to
2041 cancel open locks for same inode we are holding och_sem for.
2045 Description: Client eviction while running blogbench
2046 Details : A lot of unlink operations with concurrent I/O can lead to a
2047 deadlock causing evictions. To address the problem, the number of
2048 oustanding OST_DESTROY requests is now throttled to
2049 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
2050 callbacks are processed in priority.
2054 Description: enable ACLs on MDS by default
2055 Details : ACLs must be enabled on MDS by default.
2058 Frequency : PPC/PPC64 only
2060 Description: conflicts between asm-ppc64/types.h and lustre_types.h
2061 Details : fix duplicated definitions between asm-ppc64/types.h and
2062 lustre_types.h on PPC.
2065 Frequency : PPC/PPC64 only
2067 Description: asm-ppc/segment.h does not exist
2068 Details : fix compile issue on PPC.
2072 Description: better handle error messages in extents code
2075 Frequency : RHEL4 only
2077 Description: mkfs is very slow on IA64/RHEL4
2078 Details : A performance regression has been discovered in the MPT Fusion
2079 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2080 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2081 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2083 Severity : enhancement
2085 Description: SNMP support enhancement
2086 Details : Adding total number of sampled request for an MDS node in snmp
2089 Severity : enhancement
2091 Description: Optimize ldlm waiting list processing for PR extent locks
2092 Details : When processing waiting list for read extent lock and meeting read
2093 lock that is same or wider to it that is not contended, skip
2094 processing rest of the list and immediatelly return current
2095 status of conflictness, since we are guaranteed there are no
2096 conflicting locks in the rest of the list.
2100 Description: Time out and refuse to reconnect
2101 Details : When the failover node is the primary node, it is possible
2102 to have two identical connections in imp_conn_list. We must
2103 compare not conn's pointers but NIDs, otherwise we can defeat
2104 connection throttling.
2108 Description: port llog fixes from b1_6 into HEAD
2109 Details : Port llog reference couting and some llog cleanups from b1_6
2110 (bug 10800) into HEAD, for protect from panic and access to already
2111 free llog structures.
2115 Description: Detect stride IO mode in read-ahead
2116 Details : When a client does stride read, read-ahead should detect that and
2117 read-ahead pages according to the detected stride pattern.
2121 Description: data checksumming impacts single node performance
2122 Details : add support for several checksum algorithm. Currently, only CRC32
2123 and Adler-32 are supported. The checksum type can be changed on
2124 the fly via /proc/fs/lustre/osc/*/checksum_type.
2128 Description: use adler32 for page checksums
2129 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2134 Description: build for x2 fails
2135 Details : fix compile issue on Cray systems.
2139 Description: Properly match for duplicate locks
2140 Details : Due to different lock order from skiplists code, we need to
2141 traverse entire list for now
2144 Frequency : only on PPC/SLES10
2146 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2147 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2148 be defined. Add a hack in mkfs_lustre.c to work around this compile
2153 Description: LASSERT on MDS when client holding flock lock dies
2154 Details : ldlm pool logic depends on number of granted locks equal to
2155 number of released locks which is not true for flock locks, so
2156 just exclude such locks from consideration.
2160 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2161 Details : Use fsfilt_sync() for both the whole filesystem sync and
2162 individual file sync to eliminate dangerous inode locking
2163 with I_LOCK that can lead to a deadlock.
2167 Description: performance in 1.6.3
2168 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2169 sure that 1MB requests are not fragmented by the block layer.
2171 Severity : enhancement
2173 Description: organize the server-side client stats on per-nid basis
2174 Details : Change the structure of stats under obdfilter and mds to
2182 The "uuid"s file would list the uuids of _active_ exports.
2183 And the clear entry is to clear all stats and stale nids.
2185 Severity : enhancement
2187 Description: eliminate client locks in face of contention
2188 Details : file contention detection and lockless i/o implementation
2189 for contended files.
2193 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2196 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2198 Description: MDS may lose file striping (and hence file data) in some cases
2199 Details : If there are additional extended attributes stored on the MDS,
2200 in particular ACLs, SELinux, or user attributes (if user_xattr
2201 is specified for the client mount options) then there is a risk
2202 of attribute loss. Additionally, the Lustre file striping
2203 needs to be larger than default (e.g. striped over all OSTs),
2204 and an additional attribute must be stored initially in the
2205 inode and then increase in size enough to be moved to the
2206 external attribute block (e.g. ACL growing in size) for file
2211 Description: skiplist implementation simplification
2212 Details : skiplists are used to group compatible locks on granted list
2213 that was implemented as tracking first and last lock of each
2214 lock group the patch changes that to using doubly linked lists
2218 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2219 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2220 because LASSERT on both the data supplied by a client, and the
2221 data on disk is dangerous and incorrect.
2223 Severity : enhancement
2225 Description: Slow truncate/writes to huge files at high offsets.
2226 Details : Directly associate cached pages to lock that protect those pages,
2227 this allows us to quickly find what pages to write and remove
2228 once lock callback is received.
2232 Description: more ldlm soft lockups
2233 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2234 starve other threads from the resource lock for a long time in
2235 case of long waiting queue, so change the debug level from
2236 D_OTHER to the less frequently used D_INFO.
2238 Severity : enhancement
2240 Description: add -gid, -group, -uid, -user options to lfs find
2244 Description: Hung threads in invalidate_inode_pages2_range
2245 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2246 once one is completed. As a result, some RPCs are stuck in the
2247 queue and are never sent.
2251 Description: filter threads hungs on waiting journal commit
2252 Details : Cleanup filter group llog code, then only filter group llog will
2253 be only created in the MDS/OST syncing process.
2257 Description: Procfs and llog threads access destoryed import sometimes.
2258 Details : Sync the import destoryed process with procfs and llog threads by
2259 the import refcount and semaphore.
2261 Severity : enhancement
2263 Description: openlock cache of b1_6 port to HEAD
2268 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2269 Details : If insertion of an extent fails, then discard the inode
2270 preallocation and free data blocks else it can lead to duplicate
2275 Description: don't always update ctime in ext3_xattr_set_handle()
2276 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2277 In some cases the ctime should not be updated, for example for
2278 2.0->1.8 compatibility it is necessary to delete an xattr and it
2279 should not update the ctime.
2283 Bugzilla : 15713/16362
2284 Description: Assertion in iopen_connect_dentry in 1.6.3
2285 Details : looking up an inode via iopen with the wrong generation number can
2286 populate the dcache with a disconneced dentry while the inode
2287 number is in the process of being reallocated. This causes an
2288 assertion failure in iopen since the inode's dentry list contains
2289 both a connected and disconnected dentry.
2293 Description: assertion failure in ldlm_handle2lock()
2294 Details : fix a race between class_handle_unhash() and class_handle2object()
2295 introduced in lustre 1.6.5 by bug 13622.
2300 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2301 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2306 Description: oops in sd_iostats_seq_show()
2307 Details : unloading/reloading the scsi low level driver triggers a kernel
2308 bug when trying to access the sd iostat file.
2313 Description: Kernel panics during QLogic driver reload
2314 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2315 patch, causing memory corruption.
2320 Description: journal_dev option does not work in b1_6
2321 Details : pass mount option during pre-mount.
2323 Severity : enhancement
2325 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2326 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2327 extent information of a file. It can be used to map logical blocks
2328 in a file to physical blocks in the block device.
2332 Description: LDLM soft lockups - improvement
2333 Details : It is be possible to send the lock handle along with each read
2334 or write request because the client is already doing a lock match
2335 itself so there isn't any reason the OST should have to re-do that
2339 Frequency : only on Cray X2
2341 Description: X2 build failures
2342 Details : fix build failures on Cray X2.
2346 Description: xid & resent requests
2347 Details : Initialize RPC XID from clock at startup (randomly if clock is
2350 Severity : enhancement
2352 Description: Add lustre_start utility to start or stop multiple Lustre servers
2357 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2358 Details : In case of memory pressure, list_del() can be called twice on
2359 req->rq_history_list, causing a kernel oops.
2363 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2364 Details : fix stack overflow in the distributed lock manager by defering
2365 export eviction after a failed AST to the elt thread instead of
2366 handling it in the dlm interpret routine.
2370 Description: Convert some comments to new format.
2371 Details : Update documenting comments to match doxygen conventions.
2375 Description: Grammar fixes.
2376 Details : A couple of trivial spelling fixes.
2380 Description: OSD_COUNTERS-mandatory
2381 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2382 to simplify the code.
2386 Description: simplify cmm_device freeing logic.
2387 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2391 Description: Add lockdep support to dt_object_operations locking interface.
2392 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2393 parameter indicating lock ordering. Update mdd code to use new
2398 Description: Introduce failloc constants for lockless IO tests.
2399 Details : Add two new failloc constants to test lockless IO. Only one of
2400 them in implemented---another is checked in yet to be landed
2405 Description: Add lockdep support for inode mutex.
2406 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2407 in the situations where Lustre has to lock more than one inode
2412 Description: Add optional invariants checking support.
2413 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2414 configure switch. This macro is to be used for consistency and
2415 sanity checks that are too expensive to be left in `production'
2420 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2421 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2426 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2427 Details : Use spin_lock_nested() in (the only) situation where more than
2428 one ldlm_lock is locked simultaneously. Also, fix possible
2429 dead-lock in ldlm_lock_change_resource() by enforcing particular
2434 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2435 Details : Instead of specifying each ldlm_lock call-back through separate
2436 parameter, wrap them into struct ldlm_callback_suite.
2440 Description: Kill join_lru obd method and its callers.
2441 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2442 in memory---a requirement implemented through ->o_join_lru() obd
2443 method in HEAD. Remove this method and its users.
2447 Description: Add asynchronous ldlm ENQUEUE completion handler.
2448 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2449 case that stock ldlm_completion_ast() cannot handle as it waits
2450 until lock is granted. Introduce new ldlm_completion_ast_async()
2451 for this. Also comment ldlm_completion_ast().
2455 Description: ldlm_error <-> errno conversion.
2456 Details : Add functions to map (rather arbitrary) between LDLM error codes
2457 and standard errno values. CLIO needs this to prevent LDLM specific
2458 constants from escaping ldlm and osc.
2462 Description: Kill unused ldlm_handle2lock_ns() function.
2463 Details : Kill unused ldlm_handle2lock_ns() function.
2467 Description: Add lu_ref support to ldlm_lock
2468 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2469 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2470 and ldlm_resource. LDLM interface has to be changed, because code that
2471 releases a reference on a lock, has to "know" what reference this is.
2472 In the most frequent case
2474 lock = ldlm_handle2lock(handle);
2476 LDLM_LOCK_PUT(lock);
2478 no changes are required. When any other reference (received _not_ from
2479 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2480 instead of LDLM_LOCK_PUT().
2482 Arguably, changes are pervasive, and interface requires some discipline
2483 for proper use. On the other hand, it was very instrumental in finding
2484 a few leaked lock references.
2488 Description: Add ldlm_lock_addref_try().
2489 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2490 attempts to addref a lock that might be being canceled
2495 Description: Add ldlm_weigh_callback().
2496 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2497 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2498 hard-coded `number of pages' logic.
2502 Description: Add lockdep annotations to llog code.
2503 Details : Use appropriately tagged _nested() locking calls in the places
2504 where llog takes more than one ->lgh_lock lock.
2508 Description: Add loi_kms_set().
2509 Details : Wrap kms updates into a helper function.
2513 Description: Constify instances of struct lsm_operations.
2514 Details : Constify instances of struct lsm_operations.
2518 Description: lu_conf support.
2519 Details : On a server, a file system object is uniquely identified
2520 by a fid, which is sufficient to locate and load all object
2521 state (inode). On a client, on the other hand, more data are
2522 necessary instantiate an object. Change lu_object_find() and
2523 friends to take additional `lu_conf' argument describing object.
2524 Typically this includes layout information.
2528 Description: lu_context fixes.
2529 Details : Introduce new lu_context functions that are needed on the client
2530 side, where some system threads (ptlrpcd) are shared by multiple
2531 modules, and so cannot be stopped during module shutdown.
2535 Description: Add start and stop methods to lu_device_type_operations.
2536 Details : Introduce two new methods in lu_device_type_operations, that are
2537 invoked when first instance of a given type is created and last one
2538 is destroyed respectively. This is need by CLIO.
2542 Description: Add lu_ref support to struct lu_device.
2543 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2544 track leaked references.
2548 Description: Introduce lu_kmem_descr.
2549 Details : lu_kmem_descr and its companion interface allow to create
2550 and destroy a number of kmem caches at once.
2554 Description: Fix lu_object finalization race.
2555 Details : Fix a race between lu_object_find() finding an object and its
2556 concurrent finalization. This race is (most likely) not possible
2557 on the server, but might happen on the client.
2561 Description: Introduce lu_ref interface.
2562 Details : lu_ref is a debugging module allowing to track references to
2563 a given object. It is quite cpu expensive, and has to be
2564 explicitly enabled with --enable-lu_ref. See usage description
2569 Description: Factor lu_site procfs stats into a separate function.
2570 Details : Separate lu_site stats printing code into a separate function
2571 that can be reused on a client.
2575 Description: Constify instances of struct {lu,dt,md}_device_operations.
2576 Details : Constify instances of struct {lu,dt,md}_device_operations.
2580 Description: Introduce struct md_site and move meta-data specific parts of
2581 struct lu_site here.
2582 Details : Move md-specific fields out of struct lu_site into special struct
2583 md_site, so that lu_site can be used on a client.
2587 Description: Kill mdd_lov_destroy().
2588 Details : Remove unused mdd code.
2592 Description: Add st_block checking to multistat.c.
2593 Details : Add st_block checking to multistat.c.
2597 Description: Add lu_ref support to struct obd_device.
2598 Details : Add lu_ref tracking to obd_device.
2602 Description: Kill obd_set_fail_loc().
2603 Details : Remove unused code.
2607 Description: Add special type for ptlrpc_request interpret functions.
2608 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2609 there. Actual usage will be in CLIO.
2613 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2614 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2615 doesn't work with lockdep.
2619 Description: Add rwv.c test program.
2620 Details : New testing program exercising readv(2) and writev(2) (Qian).
2624 Description: Add sendfile.c test program.
2625 Details : New testing program exercising sendfile(2) (Jay).
2629 Description: Ratelimit a message that can be very frequent.
2630 Details : Ratelimit a memory allocation failure message that can
2635 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2636 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2640 Description: Liblustre build fixes.
2641 Details : Liblustre build fixes.
2645 Description: libcfs: add cfs_{need,cond}_resched() interface.
2646 Details : libcfs: add cfs_{need,cond}_resched() definition and
2647 implementations for Linux, NT, and liblustre.
2649 Severity : enhancement
2651 Description: More exported tunables for mballoc
2652 Details : Add support for tunable preallocation window and new tunables for
2653 large/small requests
2657 Description: Detect corruption of block bitmap and checking for preallocations
2658 Details : Checks validity of on-disk block bitmap. Also it does better
2659 checking of number of applied preallocations. When corruption is
2660 found, it turns filesystem readonly to prevent further corruptions.
2664 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2665 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2666 window to 0. If it does hit cache miss, and read-pattern is still
2667 stride-io mode, does not reset the stride window, but also does not
2668 increase the stride window length in this case.
2672 Frequency : only for big-endian servers
2673 Description: Check if system is big-endian while mounting fs with extents feature
2674 Details : Mounting a filesystem with extents feature will fail on big-endian
2675 systems since ext3-based ldiskfs is not supported on big-endian
2676 systems. This can be over-riden with "bigendian_extents" mount option.
2678 Severity : enhancement
2680 Description: The root squash functionality
2681 Details : A security feature, which is to prevent users from being able
2682 to mount lustre on their desktop, run as root, and delete
2683 all of the files in the filesystem. The goal is accomplished by
2684 remapping user id (UID) and group id (GID) of the root user to
2685 a UID and GID specified by the system administartor via Lustre
2686 configuration management server (MGS). The functionality also
2687 allows to specify sets of clients for which the remapping does
2692 Description: Excessive recovery window
2693 Details : With AT enabled, the recovery window can be excessively long (6000+
2694 seconds). To address this problem, we no longer use
2695 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2696 timeout no longer depends on the service time, it is set to
2697 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2698 time via pb_service_time.
2702 Description: Watchdog triggered on MDS failover
2703 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2704 the OSTs know that the MDS "UUID" can be reused for the same export
2705 from a different NID, so we do not need to wait for the export to be
2709 Frequency : rare, only if using MMP with Linux RAID
2711 Description: MMP doesn't work with Linux RAID
2712 Details : While using HA for Lustre servers with Linux RAID, it is possible
2713 that MMP will not detect multiple mounts. To make this work we
2714 need to unplug the device queue in RAID when the MMP block is being
2715 written. Also while reading the MMP block, we should read it from
2716 disk and not the cached one.
2718 Severity : enhancement
2720 Description: open file using fid
2721 Details : A file can be opened using just its fid, like
2722 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2725 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2728 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2729 Details : add proper locking for creation of jbd_4k slab cache
2733 Description: MMP check in ext3_remount() fails without displaying any error
2734 Details : When multiple mount protection fails during remount, proper error
2737 Severity : enhancement
2739 Description: Allow stripe size to be up to 4G-64k
2740 Details : Fix math logic to allow large stripe sizes.
2744 Description: add check for >8TB ldiskfs filesystems
2745 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2746 Don't allow >8TB ldiskfs filesystems to be mounted without
2747 force_over_8tb mount option
2752 Descriptoin: OSS complains "too many blocks" and crashes
2753 Details : In filter_commitrw_write():
2754 1. lquota_chkquota();
2755 2. obdo_from_inode();
2756 3. lquota_pending_commit();
2757 "2." has changed uid and gid in this case, then caused
2758 lquota_chkquota() and lquota_pending_commit() to use
2759 different uid and gid. That is the root of the bug.
2763 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2764 Details : Detect and print out the 'stripe count = -1' case properly.
2768 Description: Out or order replies might be lost on replay
2769 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2770 request with tid smaller than one currently being added, add it
2771 to the start, not end of the list.
2773 --------------------------------------------------------------------------------
2775 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2777 * Support for kernels:
2778 2.6.5-7.283 (SLES 9),
2779 2.6.9-55.EL (RHEL 4),
2780 2.6.16.46-0.14 (SLES 10),
2781 2.6.18.8 vanilla (kernel.org)
2782 * Client support for unpatched kernels:
2783 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2784 2.6.16 - 2.6.22 vanilla (kernel.org)
2785 * Due to recently discovered recovery problems, we do not recommend
2786 using patchless RHEL 4 clients with this or any earlier release.
2787 * Recommended e2fsprogs version: 1.39.cfs8
2788 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2789 * Starting with this release, the ldiskfs backing filesystem required
2790 by Lustre is now in its own package, lustre-ldiskfs. This package
2791 should be installed. It is versioned separately from Lustre and
2792 may be released separately in future.
2796 Description: block reactivating mgc import until all deactivates complete
2797 Details : Fix race when failing back MDT/MGS to itself (testing)
2800 Frequency : at statup only
2802 Description: mds_lov_synchronize race leads to various problems
2803 Details : simultaneous MDT->OST connections at startup can cause the
2804 sync to abort, leaving the OSC in a bad state.
2806 Severity : enhancement
2808 Description: add optional extra BUILD_VERSION info
2809 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2810 to override the lustre version.
2813 Frequency : 2.6.18 servers only
2815 Description: ll_kern_mount() doesn't release the module reference
2816 Details : The ldiskfs module reference count never drops down to 0
2817 because ll_kern_mount() doesn't release the module reference.
2822 Description: server LBUG when using old ost_num_threads parameter
2823 Details : Accept the old ost_num_threads parameter but warn that it
2824 is deprecated, and fix an off-by-one error that caused an LBUG.
2829 Description: Transient SCSI error results in persistent IO issue
2830 Details : iobuf->dr_error is not reinitialized to 0 between two
2834 Frequency : sometimes when underlying device returns I/O errors
2836 Description: OSTs not going read-only during write failures
2837 Details : OSTs are not remounted read-only when the journal commit threads
2838 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2839 instead of the ext3 wrappers.
2843 Description: poor connect scaling with increasing client count
2844 Details : Don't run filter_grant_sanity_check for more than 100 exports
2845 to improve scaling for large numbers of clients.
2848 Frequency : SLES10 only
2850 Description: sanity-quota.sh quotacheck failed: rc = -22
2851 Details : Quotas cannot be enabled on SLES10.
2854 Frequency : liblustre clients only
2856 Description: getdirentries does not give error when run on compute nodes
2857 Details : getdirentries does not fail when the size specified as an argument
2858 is too small to contain at least one entry
2860 Severity : enhancement
2862 Description: Add LNET router traceability for debug purposes
2863 Details : If a checksum failure occurs with a router as part of the
2864 IO path, the NID of the last router that forwarded the bulk data
2865 is printed so it can be identified.
2870 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2871 Details : Due to a race condition, liblustre clients were occasionally
2872 evicted incorrectly.
2874 Severity : enhancement
2876 Description: lfs setstripe use optional parameters instead of postional
2879 Severity : enhancement
2881 Description: Nanosecond timestamp support for ldiskfs
2882 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2883 resolution timestamps. There is not yet support for this at
2884 the Lustre filesystem level.
2887 Frequency : during server recovery
2889 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2890 Details : request with rq_no_resend flag not awake l_wait_event if they get
2894 Frequency : nfs export on patchless client
2896 Description: connectathon hang when test nfs export over patchless client
2897 Details : Disconnected dentry cannot be found with lookup, so we do not need
2898 to unhash it or make it invalid
2901 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2902 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2903 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2908 Description: open req refcounting wrong on reconnect
2909 Details : If reconnect happened between getting open reply from server and
2910 call to mdc_set_replay_data in ll_file_open, we will schedule
2911 replay for unreferenced request that we are about to free.
2912 Subsequent close will crash in variety of ways.
2913 Check that request is still eligible for replay in
2914 mdc_set_replay_data().
2919 Description: disable writes to filesystem when reading health_check file
2920 Details : the default for reading the health_check proc file has changed
2921 to NOT do a journal transaction and write to disk, because this
2922 can cause reads of the /proc file to hang and block HA state
2923 checking on a healthy but otherwise heavily loaded system. It
2924 is possible to return to the previous behaviour during configure
2925 with --enable-health-write.
2927 Severity : enhancement
2929 Description: 64-bit inode version
2930 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2931 to the inode. This will be required for version-based recovery.
2936 Description: MDS fails to start if a duplicate client export is detected
2937 Details : in some rare cases it was possible for a client to connect to
2938 an MDS multiple times. Upon recovery the MDS would detect this
2939 and fail during startup. Handle this more gracefully.
2941 Severity : enhancement
2943 Description: Add -o localflock option to simulate old noflock
2945 Details : This will achieve local-only flock/fcntl locks
2951 Description: log_commit_thread vs filter_destroy race leads to crash
2952 Details : Take import reference before releasing llog record semaphore
2957 Description: Wrong request locking in request set processing
2958 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2959 imp_delayed_list, in this place should be used imp_lock.
2962 Frequency : when reconnection
2964 Description: Grant Leak when osc reconnect to OST
2965 Details : When osc reconnect ost, OST(filter) should check whether it
2966 should grant more space to client by comparing fed_grant and
2967 cl_avail_grant, and return the granted space to client instead
2968 of "new granted" space, because client will call osc_init_grant
2969 to update the client grant space info.
2972 Frequency : when client reconnect to OST
2974 Description: Grant Leak when osc do resend and replay bulk write
2975 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2976 bulk write request, because the grant info while be sync between
2977 OSC and OST when reconnect, and we should ignore the grant info
2978 these of resend/replay write req.
2983 Description: Grant space more than available left space sometimes.
2984 Details : When then OST is about to be full, if two bulk writing from
2985 different clients came to OST. Accord the avaliable space of the
2986 OST, the first req should be permitted, and the second one
2987 should be denied by ENOSPC. But if the seconde arrived before
2988 the first one is committed. The OST might wrongly permit second
2989 writing, which will cause grant space > available space.
2992 Frequency : when client is evicted
2994 Description: Grant might be wrongly erased when osc is evicted by OST
2995 Details : when the import is evicted by server, it will fork another
2996 thread ptlrpc_invalidate_import_thread to invalidate the
2997 import, where the grant will be set to 0. While the original
2998 thread will update the grant it got when connecting. So if
2999 the former happened latter, the grant will be wrongly errased
3000 because of this race.
3005 Description: Checking Stale with correct fid
3006 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
3007 to check whether it is stale, because sometimes, we want the
3008 enqueue happened anyway, and op_data.fid2 will not be initialized.
3010 Severity : enhancement
3012 Description: update patchless client
3013 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
3016 Frequency : only with 2.4 kernel
3018 Description: random memory corruption
3019 Details : size of struct ll_inode_info is to big for union inode.u and this
3020 can be cause of random memory corruption.
3025 Description: Memory leak in recovery
3026 Details : Lov_mds_md was not free in an error handler in mds_create_object.
3027 It should also check obd_fail before fsfilt_start, otherwise if
3028 fsfilt_start return -EROFS,(failover mds during mds recovery).
3029 then the req will return with repmsg->transno = 0 and rc = EROFS.
3030 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
3031 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
3032 be freed no matter whether fsfilt_commit success or not.
3035 Frequency : only with huge count clients
3037 Description: Prevents from taking the superblock lock in llap_from_page for
3039 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
3040 for llap_from_page call in ll_removepage prevents from taking the
3041 superblock lock for a soon died page.
3046 Description: Not check open intent error before release open handle
3047 Details : in some rare cases, the open intent error is not checked before
3048 release open handle, which may cause
3049 ASSERTION(open_req->rq_transno != 0), because it tries to release
3050 the failed open handle.
3055 Description: Set cat log bitmap only after create log success.
3056 Details : in some rare cases, the cat log bitmap is set too early. and it
3057 should be set only after create log success.
3061 Description: Accessing a block bevice can re-enable I/O when Lustre is
3062 tearing down a device.
3063 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3068 Description: service threads may hog cpus when there are a lot of requests
3069 Details : Insert cond_resched to give other threads a chance to use some CPU
3074 Description: the cat log was not initialized in recovery
3075 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3076 unlink log on mds will not be initialized until mds post
3077 recovery. And also in mds post recovery, the unlink log will
3078 initialization will be done asynchronausly, so there will be race
3079 between add unlink log and unlink log initialization.
3083 Description: brw_stats were being printed incorrectly
3084 Details : brw_stats were being printed as log2 but all of them were not
3085 recorded as log2. Also remove some code duplication arising from
3086 filter_tally_{read,write}.
3090 Frequency : rare, only in recovery.
3091 Description: ASSERTION(req->rq_type != LI_POISON) failed
3092 Details : imp_lock should be held while iterating over imp_sending_list for
3093 prevent destroy request after get timeout in ptlrpc_queue_wait.
3097 Description: replay-single.sh test 52 fails
3098 Details : A lock's skiplist need to be cleanup when it being unlinked
3099 from its resource list.
3103 Description: Short directio read returns full requested size rather than
3105 Details : Direct I/O operations should return actual amount of bytes
3106 transferred rather than requested size.
3108 Severity : enhancement
3110 Description: metadata RPC reduction (e.g. for rm performance)
3111 Details : decrease the amount of synchronous RPC between clients and servers
3112 by canceling conflicing lock before the operation on the client
3113 and packing thier handles into the main operation RPC to server.
3115 Severity : enhancement
3117 Description: Async OSC create to avoid the blocking unnecessarily.
3118 Details : If an OST has no remaining object, system will block on the
3119 creation when it needs to create a new object on this OST. Now,
3120 ways use pre-created objects when available, instead of blocking on
3121 an empty osc while others are not empty. If we must block, we
3122 block for the shortest possible period of time.
3126 Description: improve handling recoverable errors
3127 Details : if request processig with error which can be recoverable on server
3128 request should be resend, otherwise page released from cache and
3131 Severity : enhancement
3133 Description: refine locking for avoid write wrong info into lov_objid file
3134 Details : fix possible races with add new target and write/update data in
3137 --------------------------------------------------------------------------------
3139 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3144 Frequency : on some architectures
3146 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3147 Details : Uninitialized flags sometimes cause configuration commands to
3151 Frequency : patchless clients only
3153 Description: missing __iget() symbol export
3154 Details : The __iget() symbol export is missing. To avoid the need for
3155 this on patchless clients the deathrow inode reaper is turned
3156 off, and we depend on the VM to clean up old inodes. This
3157 dependency was during via the fix for bug 12181.
3159 --------------------------------------------------------------------------------
3161 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3163 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3164 INTEROPERATE with older versions automatically. In many cases a
3165 special upgrade step is needed. Please read the
3166 user documentation before upgrading any part of a live system.
3167 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3168 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3169 * WARNING: Lustre configuration and startup changes are required with
3170 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3174 Severity : enhancement
3176 Description: MountConf
3177 Details : Lustre configuration is now managed via mkfs and mount
3178 commands instead of lmc and lconf. New obd types (MGS, MGC)
3179 are added for dynamic configuration management. See
3180 https://mail.clusterfs.com/wikis/lustre/MountConf for
3183 Severity : enhancement
3185 Description: dynamic OST addition
3186 Details : OSTs can now be added to a live filesystem
3188 Severity : enhancement
3190 Description: startup order invariance
3191 Details : MDTs and OSTs can be started in any order. Clients only
3192 require the MDT to complete startup.
3194 Severity : enhancement
3196 Description: parallel, asynchronous orphan cleanup
3197 Details : orphan cleanup is now performed in separate threads for each
3198 OST, allowing parallel non-blocking operation.
3200 Severity : enhancement
3202 Description: optimized stripe assignment
3203 Details : stripe assignments are now made based on ost space available,
3204 ost previous usage, and OSS previous usage, in order to try
3205 to optimize storage space and networking resources.
3207 Severity : enhancement
3209 Description: Permanently set tunables
3210 Details : All writable /proc/fs/lustre tunables can now be permanently
3211 set on a per-server basis, at mkfs time or on a live system.
3213 Severity : enhancement
3215 Description: Lustre message v2
3216 Details : Add lustre message format v2.
3218 Severity : enhancement
3220 Description: client OST exclusion list
3221 Details : Clients can be started with a list of OSTs that should be
3222 declared "inactive" for known non-responsive OSTs.
3226 Description: SPEC SFS validation failure on NFS v2 over lustre.
3227 Details : Changes the blocksize for regular files to be 2x RPC size,
3228 and not depend on stripe size.
3230 Severity : enhancement
3232 Description: Multiple MD RPCs in flight.
3233 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3234 To avoid overly-overloading MDS, introduce a limit on number of
3235 MDS RPCs in flight for a single client and add /proc controls
3236 to adjust this limit.
3238 Severity : enhancement
3240 Description: client read/write statistics
3241 Details : Add client read/write call usage stats for performance
3242 analysis of user processes.
3243 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3244 file access. extents_stats shows chunk size distribution.
3245 extents_stats_per_process show chunk size distribution per
3248 Severity : enhancement
3250 Description: mds statistics
3251 Details : Add detailed mds operations statistics in
3252 /proc/fs/lustre/mds/*/stats.
3256 Description: Failure of copying files with lustre special EAs.
3257 Details : Client side always return success for setxattr call for lustre
3258 special xattr (currently only "trusted.lov").
3263 Description: Refcount LNET uuids
3264 Details : The global LNET uuid list grew linearly with every startup;
3265 refcount repeated list entries instead of always adding to
3268 Severity : enhancement
3270 Description: Dynamic service threads
3271 Details : Within a small range, start extra service threads
3272 automatically when the request queue builds up.
3275 Frequency : mixed-endian client/server environments
3277 Description: mixed-endian crashes
3278 Details : The new msg_v2 system had some failures in mixed-endian
3281 Severity : enhancement
3283 Description: Easy OST removal
3284 Details : OSTs can be permanently deactivated with e.g. 'lctl
3285 conf_param lustre-OST0001.osc.active=0'
3287 Severity : enhancement
3289 Description: MGS proc entries
3290 Details : Added basic proc entries for the MGS showing what filesystems
3293 Severity : enhancement
3295 Description: provide MGS failover
3296 Details : Added config lock reacquisition after MGS server failover.
3298 Severity : enhancement
3300 Description: add Linux 2.4 support
3301 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3305 Description: a large application tries to do I/O to the same resource and dies
3306 in the middle of it.
3307 Details : Check the req->rq_arrival time after the call to
3308 ost_brw_lock_get(), but before we do anything about
3309 processing it & sending the BULK transfer request. This
3310 should help move old stale pending locks off the queue as
3311 quickly as obd_timeout.
3314 Frequency : when an incorrect nid is specified during startup
3316 Description: ptlrpc connect to non-existant node causes kernel crash
3317 Details : LNET can't be re-entered from an event callback, which
3318 happened when we expire a message after the export has been
3319 cleaned up. Instead, hand the zombie cleanup off to another
3322 Severity : enhancement
3324 Description: plain/inodebits lock performance improvement
3325 Details : Grouping plain/inodebits in granted list by their request modes
3326 and bits policy, thus improving the performance of search through
3330 Frequency : only if OST filesystem is corrupted
3332 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3333 Details : for a short time RPCs with bulk IO are in the replay list,
3334 but replay of bulk IOs is unimplemented. If the OST filesystem
3335 is corrupted due to disk cache incoherency and then replay is
3336 started it is possible to trip an assertion. Avoid putting
3337 committed RPCs into the replay list at all to avoid this issue.
3340 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3342 Description: System hang on startup
3343 Details : This bug allowed the liblustre (e.g. catamount) client to
3344 return to the app before handling all startup RPCs. This
3345 could leave the node unresponsive to lustre network traffic
3346 and manifested as a server ptllnd timeout.
3348 Severity : enhancement
3350 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3351 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3352 boolean to control whether to print peer debug info when a
3353 client's RPC times out.
3356 Frequency : only for kernels with patches from Lustre below 1.4.3
3358 Description: Remove old rdonly API
3359 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3362 Frequency : only for devices with external journals
3364 Description: Set external device read-only also
3365 Details : During a commanded failover stop, we set the disk device
3366 read-only while the server shuts down. We now also set any
3367 external journal device read-only at the same time.
3370 Frequency : when upgrading from 1.4 while trying to change parameters
3372 Description: The wrong (new) MDC name was used when setting parameters for
3373 upgraded MDT's. Also allows changing of OSC (and MDC)
3374 parameters if --writeconf is specified at tunefs upgrade time.
3377 Frequency : when setting specific ost indicies
3379 Description: QOS code breaks on skipped indicies
3380 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3381 created with --index need not be sequential.
3383 Severity : enhancement
3385 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3386 Details : The uninit_groups feature works in conjunction with the kernel
3387 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3388 up the pass1 processing of e2fsck. This is a read-only feature
3389 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3390 mount filesystems that have had this feature enabled.
3392 Severity : enhancement
3394 Description: Improve multi-block allocation algorithm to avoid fragmentation
3395 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3396 allocation locality and avoid filesystem fragmentation.
3398 ------------------------------------------------------------------------------
3400 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3402 * Support for kernels:
3403 2.4.21-47.0.1.EL (RHEL 3)
3404 2.6.5-7.283 (SLES 9)
3405 2.6.9-42.0.10.EL (RHEL 4)
3406 2.6.12.6 vanilla (kernel.org)
3407 2.6.16.27-0.9 (SLES 10)
3408 * Recommended e2fsprogs version: 1.39.cfs5
3410 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3414 Frequency : occasional, depends on client load and configuration
3415 Bugzilla : 12181, 12203
3416 Description: data loss for recently-modified files
3418 Details : In some cases it is possible that recently written or created
3419 files may not be written to disk in a timely manner (this should
3420 normally be within 30s unless client IO load is very high).
3421 The problem appears as zero-length files or files that are a
3422 multiple of 1MB in size after a client crash or client eviction
3423 that are missing data at the end of the file.
3425 This problem is more likely to be hit on clients where files are
3426 repeatedly created and unlinked in the same directory, clients
3427 have a large amount of RAM, have many CPUs, the filesystem has
3428 many OSTs, the clients are rebooted frequently, and/or the files
3429 are not accessed by other nodes after being written.
3431 The presence of the problem can be detected by looking at
3432 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3433 smaller than the second (nr_unused) then dirty files will not
3434 be flushed automatically to disk. "sync; sleep 10" should be
3435 run several times on the node before unmounting it to update
3436 Lustre (this is also safe to run on nodes without this problem).
3438 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3439 that can cause this same problem, so customers using that kernel
3440 also need to update the kernel in addition to Lustre. In order
3441 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3443 It is normal that files written just before a client crash (less
3444 than 30s) may not yet have been flushed to disk, even for local
3448 Frequency : frequent on thin XT3 nodes
3450 Description: UUID collision on thin XT3 Linux nodes
3451 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3452 randomly, since we relied on an insufficiently-seeded PRNG.
3457 Description: OSS hangs after "All ost request buffers busy"
3458 Details : A deadlock between quota and journal operations caused OSS
3459 hangs after printing "All ost request buffers busy."
3462 Frequency : always on liblustre builds
3464 Description: Cleanup compiler warnings on liblustre
3467 Frequency : always on liblustre builds on XT3
3469 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3473 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3474 > 32000 subdirectories
3475 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3476 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3477 subdirectory count crosses 32000. This will aid e2fsck to
3478 correctly handle more than 32000 subdirectories.
3481 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3483 Description: System hang on startup
3484 Details : This bug allowed the liblustre (e.g. catamount) client to
3485 return to the app before handling all startup RPCs. This
3486 could leave the node unresponsive to lustre network traffic
3487 and manifested as a server ptllnd timeout.
3489 Severity : enhancement
3491 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3492 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3493 boolean to control whether to print peer debug info when a
3494 client's RPC times out.
3499 Description: make O_SYNC working on 2.6 kernels
3500 Details : 2.6 kernels use different method for mark pages for write,
3501 so need add a code to lustre for O_SYNC work.
3506 Description: Failure to close file and release space on NFS
3507 Details : Put inode details into lock acquired in ll_intent_file_open.
3508 Use mdc_intent_lock in ll_intent_open to properly
3509 detect all kind of errors unhandled by mdc_enqueue.
3514 Description: proc file read during shutdown sometimes raced obd removal,
3516 Details : Add lock to prevent obd access after proc file removal.
3519 Frequency : Only for files larger than 4GB on 32-bit clients.
3521 Description: improperly doing page alignment of locks
3522 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3523 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3528 Description: RPCs being resent when they shouldn't be
3529 Details : Some RPCs that should not be resent are being resent. This
3530 can cause inconsistencies in the RPC state machine. Do not
3531 resend such requests.
3534 Frequency : rare, only with NFS export
3536 Description: Crash on NFS re-export node
3537 Details : under very unusual load conditions an assertion is hit in
3538 ll_intent_file_open()
3541 Frequency : only if OST filesystem is corrupted
3543 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3544 Details : for a short time RPCs with bulk IO are in the replay list,
3545 but replay of bulk IOs is unimplemented. If the OST filesystem
3546 is corrupted due to disk cache incoherency and then replay is
3547 started it is possible to trip an assertion. Avoid putting
3548 committed RPCs into the replay list at all to avoid this issue.
3553 Description: large O_DIRECT requests fail under memory pressure/fragmentation
3554 Details : Large single O_DIRECT read and write calls can fail to allocate