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 2.6.32-573.26.1.el6 (RHEL6.7)
9 2.6.32-642.1.1.el6 (RHEL6.8)
10 3.10.0-327.18.2.el7 (RHEL7.2)
11 3.0.101-0.47.71 (SLES11 SP3)
12 3.0.101-71 (SLES11 SP4)
13 3.12.57-60.35 (SLES12 SP1)
14 vanilla linux 4.2.1 (ZFS only)
15 * Client known to build on unpatched kernels:
16 2.6.32-431.29.2.el6 (RHEL6.5)
17 2.6.32-504.30.3.el6 (RHEL6.6)
18 2.6.32-573.26.1.el6 (RHEL6.7)
19 2.6.32-642.1.1.el6 (RHEL6.8)
20 3.10.0-327.18.2.el7 (RHEL7.2)
21 3.0.101-0.47.71 (SLES11 SP3)
22 3.0.101-68 (SLES11 SP4)
23 3.0.101-71 (SLES11 SP4)
24 3.12.57-60.35 (SLES12 SP1)
26 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
27 * Recommended ZFS / SPL version: 0.6.5.7
28 * Tested with ZFS / SPL version: 0.6.5.7
29 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
30 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
31 stack overflow. For more information, please refer to bugzilla 17630.
32 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
33 the re-exporting nodes to be mounted with "32bitapi" mount option
35 --------------------------------------------------------------------------------
37 02-29-2016 Intel Corporation
39 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
40 for currently supported client and server kernel versions.
41 * Server known to build on patched kernels:
42 2.6.32-431.29.2.el6 (RHEL6.5)
43 2.6.32-504.30.3.el6 (RHEL6.6)
44 2.6.32-573.12.1.el6 (RHEL6.7)
45 3.10.0-327.3.1.el7 (RHEL7.2)
46 3.0.101-0.47.71 (SLES11 SP3)
47 3.0.101-68 (SLES11 SP4)
48 vanilla linux 4.2.1 (ZFS only)
49 * Client known to build on unpatched kernels:
50 2.6.32-431.29.2.el6 (RHEL6.5)
51 2.6.32-504.30.3.el6 (RHEL6.6)
52 2.6.32-573.12.1.el6 (RHEL6.7)
53 3.10.0-327.3.1.el7 (RHEL7.2)
54 3.0.101-0.47.71 (SLES11 SP3)
55 3.0.101-68 (SLES11 SP4)
58 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
59 * Recommended ZFS / SPL version: 0.6.4.2
60 * Tested with ZFS / SPL version: 0.6.4.2
61 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
62 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
63 stack overflow. For more information, please refer to bugzilla 17630.
64 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
65 the re-exporting nodes to be mounted with "32bitapi" mount option
67 --------------------------------------------------------------------------------
69 03-10-2015 Intel Corporation
71 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
72 for currently supported client and server kernel versions.
73 * Server known to build on patched kernels:
74 2.6.32-431.29.2.el6 (RHEL6.5)
75 2.6.32-504.8.1.el6 (RHEL6.6)
76 3.0.101-0.46 (SLES11 SP3)
77 * Client known to build on unpatched kernels:
78 2.6.32-431.29.2.el6 (RHEL6.5)
79 2.6.32-504.8.1.el6 (RHEL6.6)
80 3.10.0-123.20.1.el7 (RHEL7)
81 3.0.101-0.46 (SLES11 SP3)
82 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
83 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
84 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
85 stack overflow. For more information, please refer to bugzilla 17630.
86 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
87 the re-exporting nodes to be mounted with "32bitapi" mount option
89 Severity : enhancement
91 Description: control OST-index in IDIF via ROCOMPAT flag.
92 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
93 last_rcvd file. For new formatted OST device, it will be auto set;
94 for the case of upgrading from old OST device, you can enable it
95 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
96 enabled, for new created OST-object, its IDIF-in-LMA will contain
97 the OST-index; for the existing OST-object, the OSD will convert
98 old format IDIF as new format IDIF with OST-index stored in the
99 LMA EA when accessing such OST-object or via OI scrub. Once such
100 flag is enabled, it cannot be reverted back, so the system cannot
101 be downgraded to the orignal incompatible version.
103 --------------------------------------------------------------------------------
105 07-30-2014 Intel Corporation
107 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
108 for currently supported client and server kernel versions.
109 * Server known to build on patched kernels:
110 2.6.32-431.20.3.el6 (RHEL6.5)
111 3.0.101-0.31 (SLES11 SP3)
112 * Client known to build on unpatched kernels:
113 2.6.32-431.20.3.el6 (RHEL6.5)
114 3.0.101-0.31 (SLES11 SP3)
117 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
118 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
119 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
120 stack overflow. For more information, please refer to bugzilla 17630.
121 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
122 the re-exporting nodes to be mounted with "32bitapi" mount option
124 --------------------------------------------------------------------------------
126 10-31-2013 Intel Corporation
128 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
129 * Server builds for kernels:
130 2.6.32-358.18.1.el6 (RHEL6.4)
131 * Client builds for unpatched kernels:
132 2.6.32-358.18.1.el6 (RHEL6.4)
133 3.0.92-0.8 (SLES11 SP3)
135 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
136 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
137 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
138 stack overflow. For more information, please refer to bugzilla 17630.
139 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
140 the re-exporting nodes to be mounted with "32bitapi" mount option
142 --------------------------------------------------------------------------------
144 05-30-2013 Intel Corporation
146 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
147 * Server builds for kernels:
148 2.6.32-358.6.2.el6 (RHEL6.4)
149 * Client builds for unpatched kernels:
150 2.6.32-358.6.2.el6 (RHEL6.4)
151 3.0.74-0.6.6 (SLES11 SP2)
153 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
154 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
155 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
156 stack overflow. For more information, please refer to bugzilla 17630.
157 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
158 the re-exporting nodes to be mounted with "32bitapi" mount option
160 --------------------------------------------------------------------------------
162 9-30-2012 Whamcloud, Inc.
164 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
165 * Server support for kernels:
166 2.6.32-279.5.1.el6 (RHEL6)
167 * Client support for unpatched kernels:
168 2.6.32-279.5.1.el6 (RHEL6)
170 2.6.18-238.19.1.el5 (RHEL5)
171 2.6.16.60-0.69.1 (SLES10)
172 * Recommended e2fsprogs version: 1.41.90.wc4
173 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
174 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
175 stack overflow. For more information, please refer to bugzilla 17630.
176 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
177 the re-exporting nodes to be mounted with "32bitapi" mount option
179 Severity : enhancement
181 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
183 Severity : enhancement
185 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
187 Severity : enhancement
189 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
191 Severity : enhancement
193 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
195 Severity : enhancement
197 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
199 --------------------------------------------------------------------------------
201 04-30-2012 Whamcloud, Inc.
203 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
204 * Server support for kernels:
205 2.6.32-220.4.2.el6 (RHEL6)
206 * Client support for unpatched kernels:
207 2.6.32-220.4.2.el6 (RHEL6)
209 2.6.18-238.19.1.el5 (RHEL5)
210 2.6.16.60-0.69.1 (SLES10)
211 * Recommended e2fsprogs version: 1.41.90.wc4
212 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
213 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
214 stack overflow. For more information, please refer to bugzilla 17630.
215 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
216 the re-exporting nodes to be mounted with "32bitapi" mount option
218 Severity : enhancement
220 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
222 Severity : enhancement
224 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
226 Severity : enhancement
228 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
230 Severity : enhancement
232 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
234 --------------------------------------------------------------------------------
236 09-30-2011 Whamcloud, Inc.
238 * Server support for kernels:
239 2.6.18-238.19.1.el5 (RHEL5)
240 2.6.32-131.6.1.el6 (RHEL6)
241 * Client support for unpatched kernels:
242 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
243 2.6.18-238.19.1.el5 (RHEL5)
244 2.6.32-131.6.1.el6 (RHEL6)
245 2.6.29.4-167.fc11 (FC11)
246 2.6.16.60-0.69.1 (SLES10)
248 * Recommended e2fsprogs version: 1.41.90.wc3
249 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
250 Lustre filesystem with 4K stack may cause a stack overflow. For more
251 information, please refer to bugzilla 17630.
252 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
253 mounted with "32bitapi" mount option
255 Severity : enhancement
256 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
258 Severity : enhancement
259 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
261 Severity : enhancement
262 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
265 Frequency : only with SLES10
267 Description: Use OFED "KMP" provided by Novell
268 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
269 Lustre is now built against this package. That means you need to
270 install the ofed-kmp package from Novell for the patchless client.
271 Note that the ofed-kmp that Novell ships may not exactly match the
272 kernel version but should still be compatible.
274 Severity : enhancement
276 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
277 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
279 --------------------------------------------------------------------------------
281 2010-07-15 Oracle, Inc.
283 * Server support for kernels:
284 2.6.18-164.11.1.el5 (RHEL 5)
285 2.6.18-164.11.1.0.1.el5 (OEL 5)
286 * Client support for unpatched kernels:
287 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
288 2.6.18-164.11.1.el5 (RHEL 5),
289 2.6.18-164.11.1.0.1.el5 (OEL 5)
290 2.6.16.60-0.42.8 (SLES 10),
292 2.6.29.4-167.fc11 (FC11)
293 * Recommended e2fsprogs version: 1.41.10-sun2
295 Severity : enhancement
297 Description: Distribute lfs_migrate script with lustre
298 Details : The lfs_migrate mentioned in the manual is now included in the
299 lustre tree in lustre/scripts and will distributed in lustre RPMs.
301 Severity : enhancement
303 Description: Failover nid list added to import proc file.
305 Severity : enhancement
307 Description: "som_preview" mount option required to use SOM
308 Details : The clients will need to use som_preview mount option
312 Description: Lustre does not do 1MB IOs to HW RAID
313 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
315 Severity : enhancement
317 Description: lfs quota output is not very convenient for awk/sed-parsing
318 Details : Some positions in lfs quota output table could be empty or
319 non-empty which made it hard to parse it with scripts, now
320 a dash is put instead of space where there is not supposed
325 Description: Update to OFED 1.5.1
326 Details : OFED 1.5.1 will be used in environments that don't use
327 vendor supplied OFED.
331 Description: Remove lnet. prefix from lctl params display
332 Details : Also renamed lnet.memused to lnet_memused to
337 Description: Use conf_param -d to remove permanant settings.
341 Description: Add list_param -R
342 Details : lctl list_param now supports recursive mode.
345 Bugzilla : 21829, 22312
346 Description: Fix llobdstat.
347 Details : 1. Now updating the write_bytes counter
348 2. Port script fixes from 1.8.
352 Description: decrease the usage of memory on clients.
353 Details : 1. On clients, recycle dentries and inodes unused.
354 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
359 Description: llobdstat fix and enhancement
360 Details : add a counter to set a limit to how many samples will be returned
361 fix a wildcard in the path to limit to obdfilter stats only
365 Description: lfs check only allowed for root
366 Details : Code cleanups and added a regresion test of non-root use of
371 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
372 Details : Fix hr->hr_index overload.
376 Description: Fix FIEMAP functionality.
380 Description: FC11 patchless client support added
384 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
385 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
389 Description: New acc-sm script and various test-framework enhancments.
393 Description: Previously landed patch was reverted.
397 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
401 Description: Add ldiskfs maxdirsize mount option.
405 Description: Fix mkfs.lustre support for 16TB LUNs.
409 Description: Print mmp_check_interval
410 Details : print mmp_check_interval and make it possible to abort
411 mount operation in case it takes too long.
415 Description: Add cascading_rw to lustre mpi tests.
419 Description: Store SOM data in EA.
420 Details : Also several SOM related cleanups.
424 Description: Add refcount to md_open_data
428 Description: Use refcount on lov_request_set to prevent memory corruption.
432 Description: Statahead: use parent dir's i_mutex for synchronization.
436 Description: loadgen improvements.
440 Description: Enable peer health detection in ksocklnd and ko2iblnd.
444 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
448 Description: Fix race on obd_devcie:md_stats
452 Description: Fix SLES 11 client builds.
453 Details : Resolved uninitalized pointer gcc warnings.
457 Description: Allow non-root access for "lfs check".
458 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
462 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
464 Severity : enhancement
466 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
467 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
471 Description: Sanity test_27p fails.
472 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
473 Sanity tests 27 were cleaned up and improved.
477 Description: Unify req format on client/servers
478 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
479 buffers and swabbers approach..
484 Description: drop join file stuff.
486 Severity : enhancement
488 Description: Add 2.6.27 and SLES11 (patchless client) support
492 Description: Fix in ptlrpc_expire_one_request() to print the signed time
495 Severity : enhancement
497 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
500 Severity : enhancement
502 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
504 Severity : enhancement
506 Description: correctly handle big reply message.
507 Details : send LNet event if reply is bigger than buffer and adjust this buffer
512 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
514 Severity : enhancement
516 Description: Add support for OEL5.
520 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
522 Severity : enhancement
524 Description: "weak-modules" support
525 Details : Implement "weak-modules" support which enables kernel modules
526 to be used with any kernel that implements the same kABI. In
527 order to achieve this modules are now installed in
528 /lib/modules/$(uname -r)/updates/kernel on all distributions.
532 Description: client could not reconnect to OST because of an active request.
533 Details : The client now retries to reconnect to the same server, if a
534 connect request failed with EBUSY or -EAGAIN. Test case 35b
535 conf-sanity.sh has been created.
539 Description: Don't allow make backward step on assignin osc next id.
540 Details : race between allocation next id and ll_sync thread can be cause
541 of set wrong osc next id and can be kill valid ost objects.
545 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
549 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
553 Description: Error handling in osc_statfs_interpret() has been improved.
554 Details : Check in osc_statfs_interpret() for EBADR.
558 Description: Do not send statfs() requests to OSTs disabled by administrator.
559 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
561 Severity : enhancement
563 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
565 Severity : enhancement
567 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
569 Severity : enhancement
571 Description: Enhancement for lfs(1) command to use numeric uid/gid.
575 Description: Improved cleanup procedure for conf-sanity test_46a.
579 Description: Do not start bulk transfer, if client tried to reconnect.
580 Details : Do not start bulk transfer, if client tried to reconnect,
581 but failed due to active rpcs. Check for exp_abort_active_req
582 has been implemented.
586 Description: Prevent inconsistences between linux and lustre mount structures.
587 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
588 Make the sleep interruptible.
590 Severity : enhancement
592 Description: provide server to client comms path
593 Details : server to client communications path via new LDLM_SET_INFO rpc
597 Description: truncate starts GFP_FS allocation under transaction causing deadlock
598 Details : ldiskfs_truncate calls grab_cache_page which may start page
599 allocation under an open transaction. This may lead to
600 calling prune_icache with consequent lustre reentrance.
604 Description: send correctly lsm on open replay
605 Details : MDS is trust to LSM size on replay open, but client can set wrong size
610 Description: enable client interface failover
611 Details : When a child reconnects from another NID, properly update export
612 nid hash position and ldlm reverse import.
614 Severity : enhancement
616 Description: Communicate OST degraded/readonly state via statfs to MDS
617 Details : Flags in the statfs returned from OSTs indicate whether the
618 OST is in a degraded RAID state, or if the filesystem has
619 turned read-only after a filesystem error is detected.
624 Description: don't panic if EPROTO was hit when reading symlink
625 Details : correctly handling request reference in error cases.
627 Severity : enhancement
629 Description: Add LustreNetLink, a kernel-userspace communcation path.
631 Severity : enhancement
633 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
638 Description: access to llog context before init.
639 Details : move handling CATALOGS file at osc layer and forbid access to llog
643 Frequency : rare, only when client is writing to OST on local node
645 Description: Avoid deadlock for local client writes
646 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
647 memory freeing context. This allows OST threads to set the
648 PF_MEMALLOC flag on task structures in order to allocate memory
649 from reserved pools and complete IO.
650 Use GFP_HIGHUSER for OST allocations for non-local client writes,
651 so that the OST threads generate memory pressure and allow
652 inactive pages to be reclaimed.
654 Severity : enhancement
656 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
661 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
662 Details : move ldlm namespace creation in setup phase to avoid grab
663 _lprocfs_lock with cli_sem held.
667 Description: Temporarily disable grant shrink.
668 Details : Disable the feature for debugging.
671 Frequency : only when formatting test filesystems
673 Description: Unable to run several mkfs.lustre on loop devices at the same time
674 Details : mkfs.lustre returns error 256 on the concurrent loop devices
675 formatting. The solution is to proper handle the error.
677 Severity : enhancement
679 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
681 Severity : enhancement
683 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
688 Description: resolve race between obd_disconnect and class_disconnect_exports
689 Details : if obd_disconnect will be called to already disconnected export he
690 forget release one reference and osc module can't unloaded.
692 Severity : enhancement
694 Description: Allow tuning service thread via /proc
695 Details : For each service a new
696 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
697 created that can be used to set min/max thread counts, and get the
698 current number of running threads.
703 Descriptoin: don't return error if have partially created objects for file.
704 Details : lov_update_create_set uses set->set_success as index for created
705 objects, so if some requests will be failed, they will have hole
706 at end of array and qos_shrink_lsm for allocate correct lsm.
708 Severity : enhancement
710 Description: Update OFED support to 1.4.1
715 Description: Reduce small size read RPC
716 Details : Set read-ahead limit for every file and only do read-ahead when
717 available read-ahead pages are bigger than 1M to avoid small size
720 Severity : enhancement
722 Description: move AT tunable parameters for more consistent usage
723 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
725 Severity : enhancement
727 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
728 Details : allow skip disconnected ost for send statfs request and hide error
734 Description: fix racy locking of mballoc block bitmaps causing BUG
735 Details : The locking of the mballoc buddy bitmap and the in-memory
736 block bitmap was using two different spin locks in some
737 cases. This made it possible to incorrectly access the
738 mballoc bitmap while another process was modifying it,
739 causing a sanity assertion to fail. While no on-disk corruption
740 was reported, there was some risk of this happening.
743 Frequency : rare, on llog test 6
745 Descriptoin: don't allow connect to already connected import
746 Details : allowing connect to already connected import is hide connecting problem.
751 Descriptoin: allow kill process which wait statahead result
752 Details : for some reasons 'ls' can stick in waiting result from statahead,
753 in this case need way for kill this process.
755 Severity : enhancement
757 Description: Add state history info file, enhance import info file
758 Details : Track import connection state changes in a new osc/mdc proc file;
759 add overview-type data to the osc/mdc import proc file.
761 Severity : enhancement
763 Description: MDS create should not wait for statfs RPC while holding DLM lock.
765 Severity : enhancement
767 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
772 Descriptoin: OST grant too much space to client even there are not enough space.
773 Details : Client will shrink its grant cache to OST if there are no write
774 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
775 this grant cache if there are already not enough avaible space
776 (left_space < total_clients * 32M).
779 Frequency : start MDS on uncleanly shutdowned MDS device
781 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
782 Details : stay in waiting mds<>ost recovery finished produce random bugs
783 due race between two ll_sync thread for one lov target. send
784 ACTIVATE event only if connect realy finished and import have
788 Frequency : rare, connect and disconnect target at same time
790 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
791 Details : don't call obd_disconnect under lov_lock. this long time
792 operation and can block ptlrpcd which answer to connect request.
797 Descriptoin: don't lose wakeup for imp_recovery_waitq
798 Details : recover_import_no_retry or invalidate_import and import_close can
799 both sleep on imp_recovery_waitq, but we was send only one wakeup
803 Frequency : always with long access acl
805 Descriptoin: mds can't pack reply with long acl.
806 Details : mds don't control size of acl but they limited by reint/getattr
809 Severity : enhancement
811 Description: Update to SLES10 kernel-2.6.16.60-0.33.
813 Severity : enhancement
815 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
818 Frequency : start MDS on uncleanly shutdowned MDS device
820 Descriptoin: aborting recovery hang on MDS
821 Details : don't throttle destroy RPCs for the MDT.
824 Frequency : on remount
826 Description: external journal device not working after the remount
827 Details : clear dev_rdonly flag for external journal devices in
833 Description: shutdown vs evict race
834 Details : client_disconnect_export vs connect request race.
835 if client will evicted at this time - we start invalidate
836 thread without referece to import and import can be freed
840 Frequency : rare, need acl's on inode.
842 Description: client can't handle ost additional correctly
843 Details : if ost was added after client connected to mds client can have
844 hit lnet_try_match_md ... to big messages to wide striped files.
845 in this case need teach client to handle config events about add
846 lov target and update client max ea size at that event.
848 Severity : enhancement
850 Description: Changelogs
851 Details : Changelogs are a lightweight mechanism to track filesystem
852 metadata and namespace changes. The changelog is recorded
853 permanently on the MDTs, and is periodically "consumed" / purged
854 when records are no longer needed.
856 Severity : enhancement
858 Description: compact fld format with extents
859 Details : Store range of seq rather than every seq in FLD. Seq
860 controller update FLD rather than clients. In Case of CMD, mdt0
861 has FLD, all other metadata server act as non persistent proxy
862 for FLD queries and cache fld entries in fld cache.
867 Description: don't skip ost target if they assigned to file
868 Details : Drop slow OSCs if we can, but not for requested start idx.
869 This means "if OSC is slow and it is not the requested
870 start OST, then it can be skipped, otherwise skip it only
871 if it is inactive/recovering/out-of-space.
875 Description: more cleanup in mds_lov
876 Details : not send LOV EA under replay, we can't know about they size at this
877 time. Don't allow client connect to mds before any ost connected,
878 for avoid problems with LOV EA size and returning EIO to client.
880 Severity : enhancement
882 Description: Interoperability at server side (Disk interoperability)
884 Severity : enhancement
886 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
888 Severity : enhancement
890 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
892 Severity : enhancement
894 Description: New client IO stack (CLIO).
896 Severity : enhancement
898 Description: Commit on sharing. Eliminate inter-client dependencies between
899 uncommitted transactions by doing transaction commits.
900 Thereby clients may recovery independently.
903 Frequency : Create a symlink file with a very long name
905 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
906 Details : If there is no extra space in the request for early cancels,
907 ldlm_req_handles_avail() returns 0 instead of a negative value.
909 Severity : enhancement
911 Description: Add /proc entry for import status
912 Details : The mdc, osc, and mgc import directories now have
913 an import directory that contains useful import data for debugging
916 Severity : enhancement
918 Description: Re-disable certain /proc logging
919 Details : Enable and disable client's offset_stats, extents_stats and
920 extents_stats_per_process stats logging on the fly.
923 Frequency : Only on FC kernels 2.6.22+
925 Description: oops in statahead
926 Details : Do not drop reference count for the dentry from VFS when lookup,
927 VFS will do that by itself.
929 Severity : enhancement
931 Description: Generic /proc file permissions
932 Details : Set /Proc file permissions in a more generic way to enable non-
933 root users operate on some /proc files.
937 Description: Hitting mdc_commit_close() ASSERTION
938 Details : Properly handle request reference release in
939 ll_release_openhandle().
943 Description: quota recovery deadlock during mds failover
944 Details : This patch includes att18982, att18236, att18237 in bz14840.
946 1. fix osts hang when mds does failover with quotaon
947 2. prevent watchdog storm when osts threads wait for the
952 Frequency : only patchless client
953 Description: add workaround for race between add/remove dentry from hash
955 Severity : enhancement
957 Description: Allow OST glimpses to return PW locks
961 Description: LBUG when llog conf file is full
962 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
966 Description: Prevent import from entering FULL state when server in recovery
970 Description: service mount cannot take device name with ":"
971 Details : Only when device name contains ":/" will mount treat it as
977 Description: replace ptlrpcd with the statahead thread to interpret the async
978 statahead RPC callback
982 Frequency : on recovery
983 Description: I/O failures after umount during fail back
984 Details : if client reconnected to restarted server we need join to recovery
985 instead of find server handler is changed and process self
986 eviction with cancel all locks.
988 Severity : enhancement
990 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
992 Severity : enhancement
994 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
996 Severity : enhancement
998 Description: Upcall on Lustre log has been dumped
999 Details : Allow for a user mode script to be called once a Lustre log has
1000 been dumped. It passes the filename of the dumped log to the
1001 script, the location of the script can be specified via
1002 /proc/sys/lnet/debug_log_upcall.
1007 Description: avoid idr_remove called for id which is not allocated.
1008 Details : Move assigment s_dev for clustered nfs to end of initialization,
1009 to avoid problem with error handling.
1014 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
1015 Details : When connection is reused this not moved from CONN_UNUSED_HASH
1016 into CONN_USED_HASH and this prodice warning when put connection
1017 again in unused hash.
1020 Severity : enhancement
1022 Description: File striping can now be set to use an arbitrary pool of OSTs.
1024 Severity : enhancement
1026 Description: Export bytes_read/bytes_write count on OSC/OST.
1030 Description: Early reply size mismatch, MGC loses connection
1031 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
1032 the connect flags are properly negotiated.
1037 Description: quotas are not honored with O_DIRECT
1038 Details : all writes with the flag O_DIRECT will use grants which leads to
1039 this problem. Now using OBD_BRW_SYNC to guard this.
1043 Description: add quota statistics
1044 Details : 1. sort out quota proc entries and proc code.
1045 2. add quota statistics
1047 Severity : enhancement
1049 Description: enable quota support for HEAD.
1053 Description: Properly propagate oinfo flags from lov to osc for statfs
1054 Details : restore missing copy oi_flags to lov requests.
1056 Severity : enhancement
1058 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
1059 : l_getgroups(8), lst(8), routerstat(8)
1060 Details : included man pages for llobdstat(8), llstat(8),
1061 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
1063 Severity : enhancement
1065 Description: configure's --enable-quota should check the
1066 : kernel .config for CONFIG_QUOTA
1067 Details : configure is terminated if --enable-quota is passed but
1068 : no quota support is in kernel
1072 Description: Remove portals compatibility
1073 Details : Remove portals compatibility, not interoperable with releases
1078 Description: Resolve device initialization race
1079 Details : Prevent proc handler from accessing devices added to the
1080 obd_devs array but yet be intialized.
1082 Severity : enhancement
1084 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1086 Severity : enhancement
1088 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1093 Description: Using wrong pointer in osc_brw_prep_request
1094 Details : Access to array[-1] can produce panic if kernel compiled with
1095 CONFIG_PAGE_ALLOC enabled
1099 Description: Client runs out of low memory
1100 Details : Consider only lowmem when counting initial number of llap pages
1104 Description: *optional* service tags registration
1105 Details : if the "service tags" package is installed on a Lustre node
1106 When the filesystem is mounted, a local-node service tag will
1107 be created. See http://inventory.sun.com/ for more information
1108 about the Service Tags asset management system.
1112 Description: Kernel BUG tries to release flock
1113 Details : Lustre does not destroy flock lock before last reference goes
1114 away. So always drop flock locks when client is evicted and
1115 perform unlock regardless of successfulness of speaking to MDS.
1119 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1123 Description: sanity test 65a fails if stripecount of -1 is set
1124 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1129 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1130 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1133 Severity : enhancement
1135 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1139 Description: do not process already freed flock
1140 Details : flock can possibly be freed by another thread before it reaches
1141 to ldlm_flock_completion_ast.
1145 Description: LBUG during stress test
1146 Details : Need properly lock accesses the flock deadlock detection list.
1150 Description: oops in page fault handler
1151 Details : kernel page fault handler can return two special 'pages' in error
1152 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1156 Description: timeout with invalidate import.
1157 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1158 should be handled by ptlrpcd. This produce long age waiting and
1159 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1161 Severity : enhancement
1163 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1167 Description: enable MGS and MDT services start separately
1168 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1169 a co-located MGS without starting the MGS, which is a complement
1170 to 'nosvc' mount option.
1174 Frequency : after recovery
1175 Description: precreate to many object's after del orphan.
1176 Details : del orphan st in oscc last_id == next_id and this triger growing
1177 count of precreated objects. Set flag LOW to skip increase count
1178 of precreated objects.
1182 Frequency : rare, on clear nid stats
1183 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1184 Details : when clean nid stats sometimes try destroy live entry,
1185 and this produce panic in free.
1189 Description: Stack overflow during MDS log replay
1190 ease stack pressure by using a thread dealing llog_process.
1194 Description: wait until IO finished before start new when do lock cancel.
1195 Details : VM protocol want old IO finished before start new, in this case
1196 need wait until PG_writeback is cleared until check dirty flag and
1197 call writepages in lock cancel callback.
1199 Severity : enhancement
1201 Description: using special macro for print time and cleanup in includes.
1205 Description: mds_mfd_close() ASSERTION(rc == 0)
1206 Details : In mds_mfd_close(), we need protect inode's writecount change
1207 within its orphan write semaphore to prevent possible races.
1211 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1215 Frequency : rare, on shutdown ost
1216 Description: don't hit live lock with umount ost.
1217 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1218 use shrink_dcache_sb instead.
1222 Description: don't panic with use echo client
1223 Details : echo client pass NULL as client nid pointer and this produce null
1224 pointer dereference.
1228 Description: fix build on ppc32
1229 Details : compile code with -m64 flag produce wrong object file for ppc32.
1233 Description: add message levels for liblustreapi
1237 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1238 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1239 will result in an -EAGAIN and in the exit call path we call
1240 alloc_rr() which will with increasing aggressiveness attempt to
1241 aquire precreated objects on the minimum number of required OSCs.
1245 Description: Use old size assignment to avoid deadlock
1246 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1247 the scheduling while holding a spinlock. We do not need locking
1248 for size in ll_update_inode() because size is only updated from
1249 the MDS for directories or files without objects, so there is no
1250 other place to do the update, and concurrent access to such inodes
1251 are protected by the inode lock.
1255 Description: resolve "_IOWR redefined" build error on SLES10
1259 Description: dump the memory debugging after all modules are unloaded to
1260 suppress false negative in conf_sanity test 39
1262 Severity : enhancement
1264 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1269 Description: fix SLES kernel versioning
1270 Details : the kernel version for our SLES 10 kernel did not include a "-"
1271 before the "smp" at the end. while this was not a problem in
1272 general, it did mean that software trying to use the kernel
1273 version to try to detect a vendor specific kernel would fail.
1274 this was most evident by the OFED build scripts.
1278 Description: Don't update lov_desc members until making sure they are valid
1279 Details : When updating lov_desc members via proc fs, need fix their
1280 validities before doing the real update.
1284 Description: don't put request into delay list while invalidate in flight.
1285 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1286 import in flight. this produce timeout for invalidate and sometimes
1287 can cause stale data.
1291 Frequency : on ppc only
1292 Description: not convert ost objects for directory because it's not exist.
1293 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1297 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1299 Severity : enhancement
1301 Description: Update to support 2.6.22.14 vanilla kernel.
1305 Frequency : rare, on recovery
1306 Description: read procfs can produce deadlock in some situation
1307 Details : Holding lprocfs lock which send rpc can produce block for destroy
1308 obd objects and this also block reconnect with -EALREADY. This
1309 isn't fix all lprocfs bugs - but make it rare.
1311 Severity : enhancement
1313 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1316 Frequency : frequent on X2 node
1318 Description: mdc_set_open_replay_data LBUG
1319 Details : Set replay data for requests that are eligible for replay.
1323 Description: lustre_mgs: operation 101 on unconnected MGS
1324 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1325 MGC, and late on MGC cannot successfully connect to MGS and a lot
1326 of the error messages complaining that MGS is not connected.
1330 Frequency : on network error
1331 Description: panic with double free request if network error
1332 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1333 but it's true only for synchronus enqueue, for async enqueue
1334 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1337 Severity : enhancement
1339 Description: client-side metadata stat-ahead during readdir(directory readahead)
1340 Details : perform client-side metadata stat-ahead when the client detects
1341 readdir and sequential stat of dir entries therein
1344 Frequency : on start mds
1346 Description: Implement get_info(last_id) in obdfilter.
1349 Frequency : occasional
1351 Description: Correctly check stale fid, not start epoch if ost not support SOM
1352 Details : open with flag O_CREATE need set old fid in op_fid3 because
1353 op_fid2 was overwritten with new generated fid, but mds can answer
1354 with one of these two fids and both is not stale. Setattr
1355 incorrectly started an epoch and assume will be called
1356 done_writing, but without SOM done_writing ever being called.
1359 Frequency : rare, depends on device drivers and load
1361 Description: MDS or OSS nodes crash due to stack overflow
1362 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1363 In some cases, in conjunction with device drivers that use a lot
1364 of stack the MDS (or possibly OSS) service threads could overflow
1365 the stack. One change which was identified to consume additional
1366 stack has been reworked to avoid the extra stack usage.
1369 Frequency : occasional
1371 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1372 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1373 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1374 oscc_has_objects and see OSC has no objests and call
1375 oscc_internal_create to resend create request.
1377 Severity : enhancement
1379 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1381 Severity : enhancement
1383 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1386 Frequency : very rare
1388 Description: Fix replay if there is an un-replied request and open
1389 Details : In some cases, older replay request will revert the
1390 mcd->mcd_last_xid on MDS which is used to record the client's
1391 latest sent request.
1393 Severity : enhancement
1395 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1397 Severity : enhancement
1399 Description: Add rhel5 support to HEAD.
1401 Serverity : enhancement
1403 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1408 Description: Don't allow skipping OSTs if index has been specified.
1409 Details : Don't allow skipping OSTs if index has been specified, make
1410 locking in internal create lots better.
1414 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1415 Details : access to bitfield in structure is always rounded to long
1416 and this produce problem with not atomic change any bit.
1420 Description: Lustre make rpms failed.
1421 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1422 builds Lustre rpms from tarball.
1425 Frequency : rare on shutdown ost
1427 Description: If llog cancel was not send before clean_exports phase, this can
1428 produce deadlock in llog code.
1429 Details : If llog thread has last reference to obd and call class_import_put
1430 this produce deadlock because llog_cleanup_commit_master wait when
1431 last llog_commit_thread exited, but this never success because was
1432 called from llog_commit_thread.
1436 Description: allow userland application know is lost one of stripes.
1437 Details : fill lvb_blocks with error code on ost and return it to
1438 application if error flag found.
1442 Description: NULL lov_tgts causing MDS oops
1443 Details : more safe checks for NULL lov_tgts for avoid oops.
1445 Severity : enhancement
1447 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1451 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1452 Details : If an OST is down the MDS will hang indefinitely in
1453 obd_statfs_rqset() waiting for the statfs data. While for
1454 MDS QOS usage of statfs, it should not stuck in waiting.
1456 Severity : enhancement
1458 Description: remote_acl support
1459 Details : Support ACL-based permission check for remote user.
1460 Support setfacl/getfacl for remote user with the utils
1461 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1462 the system "{s,g}etfacl" utils.
1464 Severity : enhancement
1466 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1468 Severity : enhancement
1470 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1474 Description: make mgs_setparam() handle fsname containing dash
1475 Details : fsname containing a dash does not work with lctl conf_param
1477 Severity : enhancement
1479 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1481 Severity : enhancement
1483 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1487 Frequency : rare, at shutdown
1488 Description: access already free / zero obd_namespace.
1489 Details : if client_disconnect_export was called without force flag set,
1490 and exist connect request in flight, this can produce access to
1491 NULL pointer (or already free pointer) when connect_interpret
1492 store ocd flags in obd_namespace.
1496 Frequency : only at startup
1497 Description: not alloc memory with spinlock held.
1498 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1499 if any spinlock held.
1501 Severity : enhancement
1503 Description: make lustre randomly fail allocating memory
1504 Details : Make lustre randomly failed allocating memory for testing purpose.
1506 Severity : enhancement
1508 Description: lost problems with lov objid file
1509 Details : Fixes some scability and access to not inited memory problems
1510 in work with lov objdid file.
1515 Description: lfs find does not continue on file error
1516 Details : Continue other files processing when a file/dir is absent.
1520 Description: Inconsistent usage of lustre_pack_reply()
1521 Details : Standardize the usage of lustre_pack_reply() such that it
1522 always generate a CERROR on failure.
1525 Frequency : occasional
1527 Description: MDS hang or stay in waiting lock
1528 Details : If client receive lock with CBPENDING flag ldlm need send lock
1529 cancel as separate rpc, to avoid situation when cancel request
1530 can't processed due all i/o threads stay in wait lock.
1534 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1538 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1542 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1546 Description: Update to RHEL4 latest kernel.
1548 Severity : enhancement
1550 Description: Build SLES10 patchless client fails
1551 Details : The configure was broken by run ./configure with
1552 --with-linux-obj=.... argument for patchless client. When the
1553 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1554 can't search header adequately. Use absolute path such as
1555 -I($LINUX)/include instead.
1559 Description: interrupt oig_wait produce painc on resend.
1560 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1561 private set, and this produce situation when rq_ptlrpcd_data not
1562 copyed to new allocated request and triggered LBUG on assert
1563 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1564 ptlrpcd set if request is changed and can be safety changed to use
1569 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1570 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1571 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1572 these macros and replace them with their difinitions instead.
1576 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1577 Details : Update which_patch & target file for SLES10 latest kernel.
1580 Description: Remove client patches from SLES 10 kernel.
1581 Details : This causes SLES 10 clients to behave as patchless clients
1582 even on a Lustre-patched (server) kernel.
1584 Severity : enhancement
1586 Description: self-adjustable client's lru lists
1587 Details : use adaptive algorithm for managing client cached locks lru
1588 lists according to current server load, other client's work
1589 pattern, memory activities, etc. Both, server and client
1590 side namespaces provide number of proc tunables for controlling
1593 Severity : enhancement
1595 Description: light-weight GSS support
1596 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1597 and reduce performance overhead.
1599 Severity : enhancement
1601 Description: Linux keyring support
1602 Details : Support using service of Linux keyring for Lustre GSS internal
1603 context refresh/cache mechanism.
1607 Description: Fix errors in lfs documentation
1608 Details : Fixes man pages
1612 Description: don't use GFP_* in generic Lustre code.
1613 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1617 Description: obdclass is limited by single OBD_ALLOC(idarray)
1618 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1622 Description: warnings with build patchless client with vanila 2.6.19 and up
1623 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1624 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1628 Frequency : Only for SLES
1629 Description: sanity_quota fail test_1
1630 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1631 file, which makes TSTID[2] inunique.
1635 Frequency : Only for SLES9
1636 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1637 Details : Update target/ChangeLog/which_patch .
1641 Frequency : Only for test_10 in sanity-quota.sh
1642 Description: a bug in quota test code
1643 Details : checking a test flag in a wrong place
1647 Frequency : Only for test_13 in sanity-quota.sh
1648 Description: a bug in quota test script
1649 Details : shouldn't check overfull allocated quota
1653 Description: jbd statistics
1654 Details : Port older jbd statistics patch for sles10
1656 Severity : enhancement
1658 Description: Add printing inode info into message about error in writepage.
1663 Description: reply_lock_interpret crash due to race with it and lock cancel.
1664 Details : Do not replay locks that are being cancelled. Do not reference
1665 locks by their address during replay, just by their handle.
1669 Frequency : When flocks are used.
1670 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1671 Details : Flock locks might destroy just granted lock if it could be merged
1672 with another existing flock, this is done in completion handler,
1673 so teach ldlm_cli_enquque_fini that this is a valid case for
1679 Description: Oops in read and write path when failing to allocate lock.
1680 Details : Check if lock allocation failed and return error back.
1684 Description: lstripe command fails for valid OST index
1685 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1686 instead of lov->desc.ld_active_tgt_count.
1690 Description: sanity.sh failed test 103
1691 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1696 Description: df doesn't work properly if diskfs blocksize != 4K
1697 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1701 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1702 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1704 Severity : enhancement
1706 Description: Adaptive timeouts
1707 Details : RPC timeouts adapt to changing server load and network
1708 conditions to reduce resend attempts and improve recovery time.
1712 Description: llapi_file_create() does not allow some changes
1713 Details : add llapi_file_open() that allows specifying the mode and
1714 open flags, and also returns an open file handle.
1718 Description: merge and cleanup kernel patches.
1719 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1723 Description: Add journal checksum support.(Kernel part)
1724 Details : The journal checksum feature adds two new flags i.e
1725 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1726 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1727 indicates that the commit block contains the checksum for
1728 the blocks described by the descriptor blocks. Now commit
1729 record can be sent to disk without waiting for descriptor
1730 blocks to be written to disk. This behavior is controlled
1731 using JBD2_FEATURE_ASYNC_COMMIT flag.
1735 Description: OSS needs mutliple precreate threads
1736 Details : Add ability to start more than one create thread per OSS.
1740 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1741 Details : execute lfs setstripe on client
1745 Description: mds_obd_create error creating tmp object
1746 Details : When the user sets quota on root, llog will be affected and can't
1747 create files and write files.
1750 Frequency : Always on ia64 patchless client, and possibly others.
1752 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1753 Details : This allows the patchless client to be loaded on architectures
1754 without this export.
1758 Description: RedHat Update kernel for RHEL5
1759 Details : Add the kernel config file for RHEL5.
1763 Description: RedHat Update kernel for RHEL5
1764 Details : Modify the kernel config file more closer RHEL5.
1768 Description: Build failure against Centos5 (RHEL5)
1769 Details : Define PAGE_SIZE when it isn't present.
1773 Description: test_7 on sanity-quota.sh can't be used on separate machines
1774 Details : add facet to handle it
1778 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1779 Details : with NFS, the anon dentry's parent was set to itself in
1780 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1781 corresponding dentry other than use rec->ur_name.
1783 Severity : enhancement
1785 Description: lfs setstripe enhancement
1786 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1790 Description: enable data checksumming by default
1791 Details : enable checksum by default, allow --disable-checksum
1792 configure option and "-o nochecksum" mount option. Checksums
1793 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1797 Description: lustre support for RHEL5
1798 Details : Add support for RHEL5.
1802 Description: Client eviction due to failover config
1803 Details : after a connection loss, the lustre client should attempt to
1804 reconnect to the last active server first before trying the
1805 other potential connections.
1809 Description: when mds and osts use different quota unit(32bit and 64bit),
1810 quota will be released repeatly.
1811 Details : void sending multiple quota reqs to mds, which will keep the
1812 status between the reqs.
1816 Description: osts not allocated evenly to files
1817 Details : change the condition to increase offset_idx
1820 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1822 Description: Data corruption for OSTs that are formatted larger than 2TB
1824 Details : When generating the bio request for lustre file writes the
1825 sector number would overflow a temporary variable before being
1826 used for the IO. The data reads correctly from Lustre (which
1827 will overflow in a similar manner) but other file data or
1828 filesystem metadata may be corrupted in some cases.
1832 Description: Tune the kernel for good SCSI performance.
1833 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1834 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1839 Description: rewrite ext2-derived code in obdclass/uuid.c
1840 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1841 from scratch preserving functionality.
1845 Description: "lfs find -obd UUID" prints directories
1846 Details : "lfs find -obd UUID" will return all directory names instead
1847 of just file names. It is incorrect because the directories
1848 do not reside on the OSTs.
1852 Description: use i_size_read and i_size_write in 2.6 port
1853 Details : replace inode->i_size access with i_size_read/write()
1856 Frequency : when removing large files
1858 Description: scheduling issue during removal of large Lustre files
1859 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1860 It causes scheduling issues when removing large files (17TB in the
1864 Frequency : only with liblustre clients on XT3
1866 Description: evictions taking too long
1867 Details : allow llrd to evict clients directly on OSTs
1870 Frequency : only on ppc
1872 Description: /proc/fs/lustre/devices broken on ppc
1873 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1874 We should make sure the type of 'index' is loff_t and then cast
1875 explicitly as needed below. Do not assign an explicitly cast
1879 Frequency : only for rhel5
1881 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1882 Details : Modify the target file & which_kernel.
1884 Severity : enhancement
1886 Description: omit set fsid for export NFS
1887 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1888 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1892 Frequency : Always, for kernels after 2.6.16
1893 Description: Fix warning idr_remove called for id=.. which is not allocated.
1894 Details : Last kernels save old s_dev before kill super and not allow
1895 to restore from callback - restore it before call kill_anon_super.
1899 Description: buffer overruns could theoretically occur
1900 Details : llapi_semantic_traverse() modifies the "path" argument by
1901 appending values to the end of the origin string, and a
1902 overrun may occur. Adding buffer overrun check in liblustreapi.
1906 Description: Fix error on 'ls .' at the top of the Lustre mount.
1907 Details : Don't revalidate dentry if it is a root dentry.
1911 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1912 Details : Modify vm-tunables-rhel4.patch.
1916 Description: Kernel config for 2.6.18-vanilla.
1917 Details : Modify targets/2.6-vanilla.target.in.
1918 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1919 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1920 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1921 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1925 Description: improve handling recoverable errors
1926 Details : if request processig with error which can be recoverable on server
1927 request should be resend, otherwise page released from cache and
1932 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1933 Details : Modify target file & which_patch.
1934 A flaw was found in the IA32 system call emulation provided
1935 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1936 value could be stored in the %RAX register, which could trigger an
1937 out-of-bounds system call table access. An untrusted local user
1938 could exploit this flaw to run code in the kernel
1939 (ie a root privilege escalation). (CVE-2007-4573).
1943 Description: O_DIRECT bypasses client statistics.
1944 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1945 read_ahead_stats were updated. copied the stats section from
1946 osc_send_oap_rpc() into async_internal().
1950 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1954 Description: change order of libsysio includes
1955 Details : '#include sysio.h' should always come before '#include xtio.h'
1959 Description: handle "serious error: objid * already exists" more gracefully
1960 Details : If LAST_ID value on disk is smaller than the objects existing in
1961 the O/0/d* directories, it indicates disk corruption and causes an
1962 LBUG(). If the object is 0-length, then we should use the existing
1963 object. This will help to avoid a full fsck in most cases.
1965 Severity : enhancement
1967 Description: adapt the lustre_config script to support the upgrade case
1968 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1969 server targets to 1.6 in parallel.
1973 Description: To avoid grant space > avaible space when the disk is almost
1974 full. Without this patch you might see the error "grant XXXX >
1975 available" or some LBUG about grant, when the disk is almost
1977 Details : In filter_check_grant, for non_grant cache write, we should
1978 check the left space by if (*left > ungranted + bytes), instead
1979 of (*left > ungranted), because only we are sure the left space
1980 is enough for another "bytes", then the ungrant space should be
1981 increase. In client, we should update cl_avail_grant only there
1982 is OBD_MD_FLGRANT in the reply.
1986 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1987 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1988 described in CVE-2007-4573. This problem could allow untrusted
1989 local users to gain root access.
1992 Frequency : when using O_DIRECT and quotas
1994 Description: Incorrect file ownership on O_DIRECT output files
1995 Details : block usage reported by 'lfs quota' does not take into account
1996 files that have been written with O_DIRECT.
2001 Description: touch file failed when fs is not full
2002 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
2003 otherwise we can get ENOSP while fs is not full.
2007 Description: parallel lock callbacks
2008 Details : Instead of sending blocking and completion callbacks as separated
2009 requests, adding them to a set and sending in parallel.
2012 Frequency : only for Cray XT3
2013 Bugzilla : 12829/13455
2014 Description: Changing primary group doesn't change the group lustre assigns to
2016 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
2017 overridden with the primary group provided by the group upcall,
2018 whereas the supplied fsgid can be trusted if it is in the list of
2019 supplementary groups returned by the group upcall.
2021 Severity : enhancement
2023 Description: Allow masking D_WARNING, D_ERROR messages from console
2024 Details : Console messages can now be disabled via lnet.printk.
2028 Description: User code with malformed file open parameter crashes client node
2029 Details : Before packing join_file req, all the related reference should be
2030 checked carefully in case some malformed flags cause fake
2031 join_file req on client.
2035 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
2036 Details : ldlm_completion_ast() assumes that a lock is granted when the req
2037 mode is equal to the granted mode. However, it should also check
2038 that LDLM_FL_CP_REQD is not set.
2042 Description: Heavy nfs access might result in deadlocks
2043 Details : After ELC code landed, it is now improper to enqueue any mds
2044 locks under och_sem, because enqueue might want to decide to
2045 cancel open locks for same inode we are holding och_sem for.
2049 Description: Client eviction while running blogbench
2050 Details : A lot of unlink operations with concurrent I/O can lead to a
2051 deadlock causing evictions. To address the problem, the number of
2052 oustanding OST_DESTROY requests is now throttled to
2053 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
2054 callbacks are processed in priority.
2058 Description: enable ACLs on MDS by default
2059 Details : ACLs must be enabled on MDS by default.
2062 Frequency : PPC/PPC64 only
2064 Description: conflicts between asm-ppc64/types.h and lustre_types.h
2065 Details : fix duplicated definitions between asm-ppc64/types.h and
2066 lustre_types.h on PPC.
2069 Frequency : PPC/PPC64 only
2071 Description: asm-ppc/segment.h does not exist
2072 Details : fix compile issue on PPC.
2076 Description: better handle error messages in extents code
2079 Frequency : RHEL4 only
2081 Description: mkfs is very slow on IA64/RHEL4
2082 Details : A performance regression has been discovered in the MPT Fusion
2083 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2084 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2085 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2087 Severity : enhancement
2089 Description: SNMP support enhancement
2090 Details : Adding total number of sampled request for an MDS node in snmp
2093 Severity : enhancement
2095 Description: Optimize ldlm waiting list processing for PR extent locks
2096 Details : When processing waiting list for read extent lock and meeting read
2097 lock that is same or wider to it that is not contended, skip
2098 processing rest of the list and immediatelly return current
2099 status of conflictness, since we are guaranteed there are no
2100 conflicting locks in the rest of the list.
2104 Description: Time out and refuse to reconnect
2105 Details : When the failover node is the primary node, it is possible
2106 to have two identical connections in imp_conn_list. We must
2107 compare not conn's pointers but NIDs, otherwise we can defeat
2108 connection throttling.
2112 Description: port llog fixes from b1_6 into HEAD
2113 Details : Port llog reference couting and some llog cleanups from b1_6
2114 (bug 10800) into HEAD, for protect from panic and access to already
2115 free llog structures.
2119 Description: Detect stride IO mode in read-ahead
2120 Details : When a client does stride read, read-ahead should detect that and
2121 read-ahead pages according to the detected stride pattern.
2125 Description: data checksumming impacts single node performance
2126 Details : add support for several checksum algorithm. Currently, only CRC32
2127 and Adler-32 are supported. The checksum type can be changed on
2128 the fly via /proc/fs/lustre/osc/*/checksum_type.
2132 Description: use adler32 for page checksums
2133 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2138 Description: build for x2 fails
2139 Details : fix compile issue on Cray systems.
2143 Description: Properly match for duplicate locks
2144 Details : Due to different lock order from skiplists code, we need to
2145 traverse entire list for now
2148 Frequency : only on PPC/SLES10
2150 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2151 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2152 be defined. Add a hack in mkfs_lustre.c to work around this compile
2157 Description: LASSERT on MDS when client holding flock lock dies
2158 Details : ldlm pool logic depends on number of granted locks equal to
2159 number of released locks which is not true for flock locks, so
2160 just exclude such locks from consideration.
2164 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2165 Details : Use fsfilt_sync() for both the whole filesystem sync and
2166 individual file sync to eliminate dangerous inode locking
2167 with I_LOCK that can lead to a deadlock.
2171 Description: performance in 1.6.3
2172 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2173 sure that 1MB requests are not fragmented by the block layer.
2175 Severity : enhancement
2177 Description: organize the server-side client stats on per-nid basis
2178 Details : Change the structure of stats under obdfilter and mds to
2186 The "uuid"s file would list the uuids of _active_ exports.
2187 And the clear entry is to clear all stats and stale nids.
2189 Severity : enhancement
2191 Description: eliminate client locks in face of contention
2192 Details : file contention detection and lockless i/o implementation
2193 for contended files.
2197 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2200 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2202 Description: MDS may lose file striping (and hence file data) in some cases
2203 Details : If there are additional extended attributes stored on the MDS,
2204 in particular ACLs, SELinux, or user attributes (if user_xattr
2205 is specified for the client mount options) then there is a risk
2206 of attribute loss. Additionally, the Lustre file striping
2207 needs to be larger than default (e.g. striped over all OSTs),
2208 and an additional attribute must be stored initially in the
2209 inode and then increase in size enough to be moved to the
2210 external attribute block (e.g. ACL growing in size) for file
2215 Description: skiplist implementation simplification
2216 Details : skiplists are used to group compatible locks on granted list
2217 that was implemented as tracking first and last lock of each
2218 lock group the patch changes that to using doubly linked lists
2222 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2223 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2224 because LASSERT on both the data supplied by a client, and the
2225 data on disk is dangerous and incorrect.
2227 Severity : enhancement
2229 Description: Slow truncate/writes to huge files at high offsets.
2230 Details : Directly associate cached pages to lock that protect those pages,
2231 this allows us to quickly find what pages to write and remove
2232 once lock callback is received.
2236 Description: more ldlm soft lockups
2237 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2238 starve other threads from the resource lock for a long time in
2239 case of long waiting queue, so change the debug level from
2240 D_OTHER to the less frequently used D_INFO.
2242 Severity : enhancement
2244 Description: add -gid, -group, -uid, -user options to lfs find
2248 Description: Hung threads in invalidate_inode_pages2_range
2249 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2250 once one is completed. As a result, some RPCs are stuck in the
2251 queue and are never sent.
2255 Description: filter threads hungs on waiting journal commit
2256 Details : Cleanup filter group llog code, then only filter group llog will
2257 be only created in the MDS/OST syncing process.
2261 Description: Procfs and llog threads access destoryed import sometimes.
2262 Details : Sync the import destoryed process with procfs and llog threads by
2263 the import refcount and semaphore.
2265 Severity : enhancement
2267 Description: openlock cache of b1_6 port to HEAD
2272 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2273 Details : If insertion of an extent fails, then discard the inode
2274 preallocation and free data blocks else it can lead to duplicate
2279 Description: don't always update ctime in ext3_xattr_set_handle()
2280 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2281 In some cases the ctime should not be updated, for example for
2282 2.0->1.8 compatibility it is necessary to delete an xattr and it
2283 should not update the ctime.
2287 Bugzilla : 15713/16362
2288 Description: Assertion in iopen_connect_dentry in 1.6.3
2289 Details : looking up an inode via iopen with the wrong generation number can
2290 populate the dcache with a disconneced dentry while the inode
2291 number is in the process of being reallocated. This causes an
2292 assertion failure in iopen since the inode's dentry list contains
2293 both a connected and disconnected dentry.
2297 Description: assertion failure in ldlm_handle2lock()
2298 Details : fix a race between class_handle_unhash() and class_handle2object()
2299 introduced in lustre 1.6.5 by bug 13622.
2304 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2305 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2310 Description: oops in sd_iostats_seq_show()
2311 Details : unloading/reloading the scsi low level driver triggers a kernel
2312 bug when trying to access the sd iostat file.
2317 Description: Kernel panics during QLogic driver reload
2318 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2319 patch, causing memory corruption.
2324 Description: journal_dev option does not work in b1_6
2325 Details : pass mount option during pre-mount.
2327 Severity : enhancement
2329 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2330 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2331 extent information of a file. It can be used to map logical blocks
2332 in a file to physical blocks in the block device.
2336 Description: LDLM soft lockups - improvement
2337 Details : It is be possible to send the lock handle along with each read
2338 or write request because the client is already doing a lock match
2339 itself so there isn't any reason the OST should have to re-do that
2343 Frequency : only on Cray X2
2345 Description: X2 build failures
2346 Details : fix build failures on Cray X2.
2350 Description: xid & resent requests
2351 Details : Initialize RPC XID from clock at startup (randomly if clock is
2354 Severity : enhancement
2356 Description: Add lustre_start utility to start or stop multiple Lustre servers
2361 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2362 Details : In case of memory pressure, list_del() can be called twice on
2363 req->rq_history_list, causing a kernel oops.
2367 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2368 Details : fix stack overflow in the distributed lock manager by defering
2369 export eviction after a failed AST to the elt thread instead of
2370 handling it in the dlm interpret routine.
2374 Description: Convert some comments to new format.
2375 Details : Update documenting comments to match doxygen conventions.
2379 Description: Grammar fixes.
2380 Details : A couple of trivial spelling fixes.
2384 Description: OSD_COUNTERS-mandatory
2385 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2386 to simplify the code.
2390 Description: simplify cmm_device freeing logic.
2391 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2395 Description: Add lockdep support to dt_object_operations locking interface.
2396 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2397 parameter indicating lock ordering. Update mdd code to use new
2402 Description: Introduce failloc constants for lockless IO tests.
2403 Details : Add two new failloc constants to test lockless IO. Only one of
2404 them in implemented---another is checked in yet to be landed
2409 Description: Add lockdep support for inode mutex.
2410 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2411 in the situations where Lustre has to lock more than one inode
2416 Description: Add optional invariants checking support.
2417 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2418 configure switch. This macro is to be used for consistency and
2419 sanity checks that are too expensive to be left in `production'
2424 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2425 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2430 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2431 Details : Use spin_lock_nested() in (the only) situation where more than
2432 one ldlm_lock is locked simultaneously. Also, fix possible
2433 dead-lock in ldlm_lock_change_resource() by enforcing particular
2438 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2439 Details : Instead of specifying each ldlm_lock call-back through separate
2440 parameter, wrap them into struct ldlm_callback_suite.
2444 Description: Kill join_lru obd method and its callers.
2445 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2446 in memory---a requirement implemented through ->o_join_lru() obd
2447 method in HEAD. Remove this method and its users.
2451 Description: Add asynchronous ldlm ENQUEUE completion handler.
2452 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2453 case that stock ldlm_completion_ast() cannot handle as it waits
2454 until lock is granted. Introduce new ldlm_completion_ast_async()
2455 for this. Also comment ldlm_completion_ast().
2459 Description: ldlm_error <-> errno conversion.
2460 Details : Add functions to map (rather arbitrary) between LDLM error codes
2461 and standard errno values. CLIO needs this to prevent LDLM specific
2462 constants from escaping ldlm and osc.
2466 Description: Kill unused ldlm_handle2lock_ns() function.
2467 Details : Kill unused ldlm_handle2lock_ns() function.
2471 Description: Add lu_ref support to ldlm_lock
2472 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2473 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2474 and ldlm_resource. LDLM interface has to be changed, because code that
2475 releases a reference on a lock, has to "know" what reference this is.
2476 In the most frequent case
2478 lock = ldlm_handle2lock(handle);
2480 LDLM_LOCK_PUT(lock);
2482 no changes are required. When any other reference (received _not_ from
2483 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2484 instead of LDLM_LOCK_PUT().
2486 Arguably, changes are pervasive, and interface requires some discipline
2487 for proper use. On the other hand, it was very instrumental in finding
2488 a few leaked lock references.
2492 Description: Add ldlm_lock_addref_try().
2493 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2494 attempts to addref a lock that might be being canceled
2499 Description: Add ldlm_weigh_callback().
2500 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2501 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2502 hard-coded `number of pages' logic.
2506 Description: Add lockdep annotations to llog code.
2507 Details : Use appropriately tagged _nested() locking calls in the places
2508 where llog takes more than one ->lgh_lock lock.
2512 Description: Add loi_kms_set().
2513 Details : Wrap kms updates into a helper function.
2517 Description: Constify instances of struct lsm_operations.
2518 Details : Constify instances of struct lsm_operations.
2522 Description: lu_conf support.
2523 Details : On a server, a file system object is uniquely identified
2524 by a fid, which is sufficient to locate and load all object
2525 state (inode). On a client, on the other hand, more data are
2526 necessary instantiate an object. Change lu_object_find() and
2527 friends to take additional `lu_conf' argument describing object.
2528 Typically this includes layout information.
2532 Description: lu_context fixes.
2533 Details : Introduce new lu_context functions that are needed on the client
2534 side, where some system threads (ptlrpcd) are shared by multiple
2535 modules, and so cannot be stopped during module shutdown.
2539 Description: Add start and stop methods to lu_device_type_operations.
2540 Details : Introduce two new methods in lu_device_type_operations, that are
2541 invoked when first instance of a given type is created and last one
2542 is destroyed respectively. This is need by CLIO.
2546 Description: Add lu_ref support to struct lu_device.
2547 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2548 track leaked references.
2552 Description: Introduce lu_kmem_descr.
2553 Details : lu_kmem_descr and its companion interface allow to create
2554 and destroy a number of kmem caches at once.
2558 Description: Fix lu_object finalization race.
2559 Details : Fix a race between lu_object_find() finding an object and its
2560 concurrent finalization. This race is (most likely) not possible
2561 on the server, but might happen on the client.
2565 Description: Introduce lu_ref interface.
2566 Details : lu_ref is a debugging module allowing to track references to
2567 a given object. It is quite cpu expensive, and has to be
2568 explicitly enabled with --enable-lu_ref. See usage description
2573 Description: Factor lu_site procfs stats into a separate function.
2574 Details : Separate lu_site stats printing code into a separate function
2575 that can be reused on a client.
2579 Description: Constify instances of struct {lu,dt,md}_device_operations.
2580 Details : Constify instances of struct {lu,dt,md}_device_operations.
2584 Description: Introduce struct md_site and move meta-data specific parts of
2585 struct lu_site here.
2586 Details : Move md-specific fields out of struct lu_site into special struct
2587 md_site, so that lu_site can be used on a client.
2591 Description: Kill mdd_lov_destroy().
2592 Details : Remove unused mdd code.
2596 Description: Add st_block checking to multistat.c.
2597 Details : Add st_block checking to multistat.c.
2601 Description: Add lu_ref support to struct obd_device.
2602 Details : Add lu_ref tracking to obd_device.
2606 Description: Kill obd_set_fail_loc().
2607 Details : Remove unused code.
2611 Description: Add special type for ptlrpc_request interpret functions.
2612 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2613 there. Actual usage will be in CLIO.
2617 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2618 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2619 doesn't work with lockdep.
2623 Description: Add rwv.c test program.
2624 Details : New testing program exercising readv(2) and writev(2) (Qian).
2628 Description: Add sendfile.c test program.
2629 Details : New testing program exercising sendfile(2) (Jay).
2633 Description: Ratelimit a message that can be very frequent.
2634 Details : Ratelimit a memory allocation failure message that can
2639 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2640 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2644 Description: Liblustre build fixes.
2645 Details : Liblustre build fixes.
2649 Description: libcfs: add cfs_{need,cond}_resched() interface.
2650 Details : libcfs: add cfs_{need,cond}_resched() definition and
2651 implementations for Linux, NT, and liblustre.
2653 Severity : enhancement
2655 Description: More exported tunables for mballoc
2656 Details : Add support for tunable preallocation window and new tunables for
2657 large/small requests
2661 Description: Detect corruption of block bitmap and checking for preallocations
2662 Details : Checks validity of on-disk block bitmap. Also it does better
2663 checking of number of applied preallocations. When corruption is
2664 found, it turns filesystem readonly to prevent further corruptions.
2668 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2669 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2670 window to 0. If it does hit cache miss, and read-pattern is still
2671 stride-io mode, does not reset the stride window, but also does not
2672 increase the stride window length in this case.
2676 Frequency : only for big-endian servers
2677 Description: Check if system is big-endian while mounting fs with extents feature
2678 Details : Mounting a filesystem with extents feature will fail on big-endian
2679 systems since ext3-based ldiskfs is not supported on big-endian
2680 systems. This can be over-riden with "bigendian_extents" mount option.
2682 Severity : enhancement
2684 Description: The root squash functionality
2685 Details : A security feature, which is to prevent users from being able
2686 to mount lustre on their desktop, run as root, and delete
2687 all of the files in the filesystem. The goal is accomplished by
2688 remapping user id (UID) and group id (GID) of the root user to
2689 a UID and GID specified by the system administartor via Lustre
2690 configuration management server (MGS). The functionality also
2691 allows to specify sets of clients for which the remapping does
2696 Description: Excessive recovery window
2697 Details : With AT enabled, the recovery window can be excessively long (6000+
2698 seconds). To address this problem, we no longer use
2699 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2700 timeout no longer depends on the service time, it is set to
2701 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2702 time via pb_service_time.
2706 Description: Watchdog triggered on MDS failover
2707 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2708 the OSTs know that the MDS "UUID" can be reused for the same export
2709 from a different NID, so we do not need to wait for the export to be
2713 Frequency : rare, only if using MMP with Linux RAID
2715 Description: MMP doesn't work with Linux RAID
2716 Details : While using HA for Lustre servers with Linux RAID, it is possible
2717 that MMP will not detect multiple mounts. To make this work we
2718 need to unplug the device queue in RAID when the MMP block is being
2719 written. Also while reading the MMP block, we should read it from
2720 disk and not the cached one.
2722 Severity : enhancement
2724 Description: open file using fid
2725 Details : A file can be opened using just its fid, like
2726 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2729 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2732 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2733 Details : add proper locking for creation of jbd_4k slab cache
2737 Description: MMP check in ext3_remount() fails without displaying any error
2738 Details : When multiple mount protection fails during remount, proper error
2741 Severity : enhancement
2743 Description: Allow stripe size to be up to 4G-64k
2744 Details : Fix math logic to allow large stripe sizes.
2748 Description: add check for >8TB ldiskfs filesystems
2749 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2750 Don't allow >8TB ldiskfs filesystems to be mounted without
2751 force_over_8tb mount option
2756 Descriptoin: OSS complains "too many blocks" and crashes
2757 Details : In filter_commitrw_write():
2758 1. lquota_chkquota();
2759 2. obdo_from_inode();
2760 3. lquota_pending_commit();
2761 "2." has changed uid and gid in this case, then caused
2762 lquota_chkquota() and lquota_pending_commit() to use
2763 different uid and gid. That is the root of the bug.
2767 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2768 Details : Detect and print out the 'stripe count = -1' case properly.
2772 Description: Out or order replies might be lost on replay
2773 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2774 request with tid smaller than one currently being added, add it
2775 to the start, not end of the list.
2777 --------------------------------------------------------------------------------
2779 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2781 * Support for kernels:
2782 2.6.5-7.283 (SLES 9),
2783 2.6.9-55.EL (RHEL 4),
2784 2.6.16.46-0.14 (SLES 10),
2785 2.6.18.8 vanilla (kernel.org)
2786 * Client support for unpatched kernels:
2787 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2788 2.6.16 - 2.6.22 vanilla (kernel.org)
2789 * Due to recently discovered recovery problems, we do not recommend
2790 using patchless RHEL 4 clients with this or any earlier release.
2791 * Recommended e2fsprogs version: 1.39.cfs8
2792 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2793 * Starting with this release, the ldiskfs backing filesystem required
2794 by Lustre is now in its own package, lustre-ldiskfs. This package
2795 should be installed. It is versioned separately from Lustre and
2796 may be released separately in future.
2800 Description: block reactivating mgc import until all deactivates complete
2801 Details : Fix race when failing back MDT/MGS to itself (testing)
2804 Frequency : at statup only
2806 Description: mds_lov_synchronize race leads to various problems
2807 Details : simultaneous MDT->OST connections at startup can cause the
2808 sync to abort, leaving the OSC in a bad state.
2810 Severity : enhancement
2812 Description: add optional extra BUILD_VERSION info
2813 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2814 to override the lustre version.
2817 Frequency : 2.6.18 servers only
2819 Description: ll_kern_mount() doesn't release the module reference
2820 Details : The ldiskfs module reference count never drops down to 0
2821 because ll_kern_mount() doesn't release the module reference.
2826 Description: server LBUG when using old ost_num_threads parameter
2827 Details : Accept the old ost_num_threads parameter but warn that it
2828 is deprecated, and fix an off-by-one error that caused an LBUG.
2833 Description: Transient SCSI error results in persistent IO issue
2834 Details : iobuf->dr_error is not reinitialized to 0 between two
2838 Frequency : sometimes when underlying device returns I/O errors
2840 Description: OSTs not going read-only during write failures
2841 Details : OSTs are not remounted read-only when the journal commit threads
2842 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2843 instead of the ext3 wrappers.
2847 Description: poor connect scaling with increasing client count
2848 Details : Don't run filter_grant_sanity_check for more than 100 exports
2849 to improve scaling for large numbers of clients.
2852 Frequency : SLES10 only
2854 Description: sanity-quota.sh quotacheck failed: rc = -22
2855 Details : Quotas cannot be enabled on SLES10.
2858 Frequency : liblustre clients only
2860 Description: getdirentries does not give error when run on compute nodes
2861 Details : getdirentries does not fail when the size specified as an argument
2862 is too small to contain at least one entry
2864 Severity : enhancement
2866 Description: Add LNET router traceability for debug purposes
2867 Details : If a checksum failure occurs with a router as part of the
2868 IO path, the NID of the last router that forwarded the bulk data
2869 is printed so it can be identified.
2874 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2875 Details : Due to a race condition, liblustre clients were occasionally
2876 evicted incorrectly.
2878 Severity : enhancement
2880 Description: lfs setstripe use optional parameters instead of postional
2883 Severity : enhancement
2885 Description: Nanosecond timestamp support for ldiskfs
2886 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2887 resolution timestamps. There is not yet support for this at
2888 the Lustre filesystem level.
2891 Frequency : during server recovery
2893 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2894 Details : request with rq_no_resend flag not awake l_wait_event if they get
2898 Frequency : nfs export on patchless client
2900 Description: connectathon hang when test nfs export over patchless client
2901 Details : Disconnected dentry cannot be found with lookup, so we do not need
2902 to unhash it or make it invalid
2905 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2906 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2907 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2912 Description: open req refcounting wrong on reconnect
2913 Details : If reconnect happened between getting open reply from server and
2914 call to mdc_set_replay_data in ll_file_open, we will schedule
2915 replay for unreferenced request that we are about to free.
2916 Subsequent close will crash in variety of ways.
2917 Check that request is still eligible for replay in
2918 mdc_set_replay_data().
2923 Description: disable writes to filesystem when reading health_check file
2924 Details : the default for reading the health_check proc file has changed
2925 to NOT do a journal transaction and write to disk, because this
2926 can cause reads of the /proc file to hang and block HA state
2927 checking on a healthy but otherwise heavily loaded system. It
2928 is possible to return to the previous behaviour during configure
2929 with --enable-health-write.
2931 Severity : enhancement
2933 Description: 64-bit inode version
2934 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2935 to the inode. This will be required for version-based recovery.
2940 Description: MDS fails to start if a duplicate client export is detected
2941 Details : in some rare cases it was possible for a client to connect to
2942 an MDS multiple times. Upon recovery the MDS would detect this
2943 and fail during startup. Handle this more gracefully.
2945 Severity : enhancement
2947 Description: Add -o localflock option to simulate old noflock
2949 Details : This will achieve local-only flock/fcntl locks
2955 Description: log_commit_thread vs filter_destroy race leads to crash
2956 Details : Take import reference before releasing llog record semaphore
2961 Description: Wrong request locking in request set processing
2962 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2963 imp_delayed_list, in this place should be used imp_lock.
2966 Frequency : when reconnection
2968 Description: Grant Leak when osc reconnect to OST
2969 Details : When osc reconnect ost, OST(filter) should check whether it
2970 should grant more space to client by comparing fed_grant and
2971 cl_avail_grant, and return the granted space to client instead
2972 of "new granted" space, because client will call osc_init_grant
2973 to update the client grant space info.
2976 Frequency : when client reconnect to OST
2978 Description: Grant Leak when osc do resend and replay bulk write
2979 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2980 bulk write request, because the grant info while be sync between
2981 OSC and OST when reconnect, and we should ignore the grant info
2982 these of resend/replay write req.
2987 Description: Grant space more than available left space sometimes.
2988 Details : When then OST is about to be full, if two bulk writing from
2989 different clients came to OST. Accord the avaliable space of the
2990 OST, the first req should be permitted, and the second one
2991 should be denied by ENOSPC. But if the seconde arrived before
2992 the first one is committed. The OST might wrongly permit second
2993 writing, which will cause grant space > available space.
2996 Frequency : when client is evicted
2998 Description: Grant might be wrongly erased when osc is evicted by OST
2999 Details : when the import is evicted by server, it will fork another
3000 thread ptlrpc_invalidate_import_thread to invalidate the
3001 import, where the grant will be set to 0. While the original
3002 thread will update the grant it got when connecting. So if
3003 the former happened latter, the grant will be wrongly errased
3004 because of this race.
3009 Description: Checking Stale with correct fid
3010 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
3011 to check whether it is stale, because sometimes, we want the
3012 enqueue happened anyway, and op_data.fid2 will not be initialized.
3014 Severity : enhancement
3016 Description: update patchless client
3017 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
3020 Frequency : only with 2.4 kernel
3022 Description: random memory corruption
3023 Details : size of struct ll_inode_info is to big for union inode.u and this
3024 can be cause of random memory corruption.
3029 Description: Memory leak in recovery
3030 Details : Lov_mds_md was not free in an error handler in mds_create_object.
3031 It should also check obd_fail before fsfilt_start, otherwise if
3032 fsfilt_start return -EROFS,(failover mds during mds recovery).
3033 then the req will return with repmsg->transno = 0 and rc = EROFS.
3034 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
3035 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
3036 be freed no matter whether fsfilt_commit success or not.
3039 Frequency : only with huge count clients
3041 Description: Prevents from taking the superblock lock in llap_from_page for
3043 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
3044 for llap_from_page call in ll_removepage prevents from taking the
3045 superblock lock for a soon died page.
3050 Description: Not check open intent error before release open handle
3051 Details : in some rare cases, the open intent error is not checked before
3052 release open handle, which may cause
3053 ASSERTION(open_req->rq_transno != 0), because it tries to release
3054 the failed open handle.
3059 Description: Set cat log bitmap only after create log success.
3060 Details : in some rare cases, the cat log bitmap is set too early. and it
3061 should be set only after create log success.
3065 Description: Accessing a block bevice can re-enable I/O when Lustre is
3066 tearing down a device.
3067 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3072 Description: service threads may hog cpus when there are a lot of requests
3073 Details : Insert cond_resched to give other threads a chance to use some CPU
3078 Description: the cat log was not initialized in recovery
3079 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3080 unlink log on mds will not be initialized until mds post
3081 recovery. And also in mds post recovery, the unlink log will
3082 initialization will be done asynchronausly, so there will be race
3083 between add unlink log and unlink log initialization.
3087 Description: brw_stats were being printed incorrectly
3088 Details : brw_stats were being printed as log2 but all of them were not
3089 recorded as log2. Also remove some code duplication arising from
3090 filter_tally_{read,write}.
3094 Frequency : rare, only in recovery.
3095 Description: ASSERTION(req->rq_type != LI_POISON) failed
3096 Details : imp_lock should be held while iterating over imp_sending_list for
3097 prevent destroy request after get timeout in ptlrpc_queue_wait.
3101 Description: replay-single.sh test 52 fails
3102 Details : A lock's skiplist need to be cleanup when it being unlinked
3103 from its resource list.
3107 Description: Short directio read returns full requested size rather than
3109 Details : Direct I/O operations should return actual amount of bytes
3110 transferred rather than requested size.
3112 Severity : enhancement
3114 Description: metadata RPC reduction (e.g. for rm performance)
3115 Details : decrease the amount of synchronous RPC between clients and servers
3116 by canceling conflicing lock before the operation on the client
3117 and packing thier handles into the main operation RPC to server.
3119 Severity : enhancement
3121 Description: Async OSC create to avoid the blocking unnecessarily.
3122 Details : If an OST has no remaining object, system will block on the
3123 creation when it needs to create a new object on this OST. Now,
3124 ways use pre-created objects when available, instead of blocking on
3125 an empty osc while others are not empty. If we must block, we
3126 block for the shortest possible period of time.
3130 Description: improve handling recoverable errors
3131 Details : if request processig with error which can be recoverable on server
3132 request should be resend, otherwise page released from cache and
3135 Severity : enhancement
3137 Description: refine locking for avoid write wrong info into lov_objid file
3138 Details : fix possible races with add new target and write/update data in
3141 --------------------------------------------------------------------------------
3143 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3148 Frequency : on some architectures
3150 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3151 Details : Uninitialized flags sometimes cause configuration commands to
3155 Frequency : patchless clients only
3157 Description: missing __iget() symbol export
3158 Details : The __iget() symbol export is missing. To avoid the need for
3159 this on patchless clients the deathrow inode reaper is turned
3160 off, and we depend on the VM to clean up old inodes. This
3161 dependency was during via the fix for bug 12181.
3163 --------------------------------------------------------------------------------
3165 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3167 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3168 INTEROPERATE with older versions automatically. In many cases a
3169 special upgrade step is needed. Please read the
3170 user documentation before upgrading any part of a live system.
3171 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3172 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3173 * WARNING: Lustre configuration and startup changes are required with
3174 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3178 Severity : enhancement
3180 Description: MountConf
3181 Details : Lustre configuration is now managed via mkfs and mount
3182 commands instead of lmc and lconf. New obd types (MGS, MGC)
3183 are added for dynamic configuration management. See
3184 https://mail.clusterfs.com/wikis/lustre/MountConf for
3187 Severity : enhancement
3189 Description: dynamic OST addition
3190 Details : OSTs can now be added to a live filesystem
3192 Severity : enhancement
3194 Description: startup order invariance
3195 Details : MDTs and OSTs can be started in any order. Clients only
3196 require the MDT to complete startup.
3198 Severity : enhancement
3200 Description: parallel, asynchronous orphan cleanup
3201 Details : orphan cleanup is now performed in separate threads for each
3202 OST, allowing parallel non-blocking operation.
3204 Severity : enhancement
3206 Description: optimized stripe assignment
3207 Details : stripe assignments are now made based on ost space available,
3208 ost previous usage, and OSS previous usage, in order to try
3209 to optimize storage space and networking resources.
3211 Severity : enhancement
3213 Description: Permanently set tunables
3214 Details : All writable /proc/fs/lustre tunables can now be permanently
3215 set on a per-server basis, at mkfs time or on a live system.
3217 Severity : enhancement
3219 Description: Lustre message v2
3220 Details : Add lustre message format v2.
3222 Severity : enhancement
3224 Description: client OST exclusion list
3225 Details : Clients can be started with a list of OSTs that should be
3226 declared "inactive" for known non-responsive OSTs.
3230 Description: SPEC SFS validation failure on NFS v2 over lustre.
3231 Details : Changes the blocksize for regular files to be 2x RPC size,
3232 and not depend on stripe size.
3234 Severity : enhancement
3236 Description: Multiple MD RPCs in flight.
3237 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3238 To avoid overly-overloading MDS, introduce a limit on number of
3239 MDS RPCs in flight for a single client and add /proc controls
3240 to adjust this limit.
3242 Severity : enhancement
3244 Description: client read/write statistics
3245 Details : Add client read/write call usage stats for performance
3246 analysis of user processes.
3247 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3248 file access. extents_stats shows chunk size distribution.
3249 extents_stats_per_process show chunk size distribution per
3252 Severity : enhancement
3254 Description: mds statistics
3255 Details : Add detailed mds operations statistics in
3256 /proc/fs/lustre/mds/*/stats.
3260 Description: Failure of copying files with lustre special EAs.
3261 Details : Client side always return success for setxattr call for lustre
3262 special xattr (currently only "trusted.lov").
3267 Description: Refcount LNET uuids
3268 Details : The global LNET uuid list grew linearly with every startup;
3269 refcount repeated list entries instead of always adding to
3272 Severity : enhancement
3274 Description: Dynamic service threads
3275 Details : Within a small range, start extra service threads
3276 automatically when the request queue builds up.
3279 Frequency : mixed-endian client/server environments
3281 Description: mixed-endian crashes
3282 Details : The new msg_v2 system had some failures in mixed-endian
3285 Severity : enhancement
3287 Description: Easy OST removal
3288 Details : OSTs can be permanently deactivated with e.g. 'lctl
3289 conf_param lustre-OST0001.osc.active=0'
3291 Severity : enhancement
3293 Description: MGS proc entries
3294 Details : Added basic proc entries for the MGS showing what filesystems
3297 Severity : enhancement
3299 Description: provide MGS failover
3300 Details : Added config lock reacquisition after MGS server failover.
3302 Severity : enhancement
3304 Description: add Linux 2.4 support
3305 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3309 Description: a large application tries to do I/O to the same resource and dies
3310 in the middle of it.
3311 Details : Check the req->rq_arrival time after the call to
3312 ost_brw_lock_get(), but before we do anything about
3313 processing it & sending the BULK transfer request. This
3314 should help move old stale pending locks off the queue as
3315 quickly as obd_timeout.
3318 Frequency : when an incorrect nid is specified during startup
3320 Description: ptlrpc connect to non-existant node causes kernel crash
3321 Details : LNET can't be re-entered from an event callback, which
3322 happened when we expire a message after the export has been
3323 cleaned up. Instead, hand the zombie cleanup off to another
3326 Severity : enhancement
3328 Description: plain/inodebits lock performance improvement
3329 Details : Grouping plain/inodebits in granted list by their request modes
3330 and bits policy, thus improving the performance of search through
3334 Frequency : only if OST filesystem is corrupted
3336 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3337 Details : for a short time RPCs with bulk IO are in the replay list,
3338 but replay of bulk IOs is unimplemented. If the OST filesystem
3339 is corrupted due to disk cache incoherency and then replay is
3340 started it is possible to trip an assertion. Avoid putting
3341 committed RPCs into the replay list at all to avoid this issue.
3344 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3346 Description: System hang on startup
3347 Details : This bug allowed the liblustre (e.g. catamount) client to
3348 return to the app before handling all startup RPCs. This
3349 could leave the node unresponsive to lustre network traffic
3350 and manifested as a server ptllnd timeout.
3352 Severity : enhancement
3354 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3355 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3356 boolean to control whether to print peer debug info when a
3357 client's RPC times out.
3360 Frequency : only for kernels with patches from Lustre below 1.4.3
3362 Description: Remove old rdonly API
3363 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3366 Frequency : only for devices with external journals
3368 Description: Set external device read-only also
3369 Details : During a commanded failover stop, we set the disk device
3370 read-only while the server shuts down. We now also set any
3371 external journal device read-only at the same time.
3374 Frequency : when upgrading from 1.4 while trying to change parameters
3376 Description: The wrong (new) MDC name was used when setting parameters for
3377 upgraded MDT's. Also allows changing of OSC (and MDC)
3378 parameters if --writeconf is specified at tunefs upgrade time.
3381 Frequency : when setting specific ost indicies
3383 Description: QOS code breaks on skipped indicies
3384 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3385 created with --index need not be sequential.
3387 Severity : enhancement
3389 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3390 Details : The uninit_groups feature works in conjunction with the kernel
3391 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3392 up the pass1 processing of e2fsck. This is a read-only feature
3393 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3394 mount filesystems that have had this feature enabled.
3396 Severity : enhancement
3398 Description: Improve multi-block allocation algorithm to avoid fragmentation
3399 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3400 allocation locality and avoid filesystem fragmentation.
3402 ------------------------------------------------------------------------------
3404 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3406 * Support for kernels:
3407 2.4.21-47.0.1.EL (RHEL 3)
3408 2.6.5-7.283 (SLES 9)
3409 2.6.9-42.0.10.EL (RHEL 4)
3410 2.6.12.6 vanilla (kernel.org)
3411 2.6.16.27-0.9 (SLES 10)
3412 * Recommended e2fsprogs version: 1.39.cfs5
3414 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3418 Frequency : occasional, depends on client load and configuration
3419 Bugzilla : 12181, 12203
3420 Description: data loss for recently-modified files
3422 Details : In some cases it is possible that recently written or created
3423 files may not be written to disk in a timely manner (this should
3424 normally be within 30s unless client IO load is very high).
3425 The problem appears as zero-length files or files that are a
3426 multiple of 1MB in size after a client crash or client eviction
3427 that are missing data at the end of the file.
3429 This problem is more likely to be hit on clients where files are
3430 repeatedly created and unlinked in the same directory, clients
3431 have a large amount of RAM, have many CPUs, the filesystem has
3432 many OSTs, the clients are rebooted frequently, and/or the files
3433 are not accessed by other nodes after being written.
3435 The presence of the problem can be detected by looking at
3436 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3437 smaller than the second (nr_unused) then dirty files will not
3438 be flushed automatically to disk. "sync; sleep 10" should be
3439 run several times on the node before unmounting it to update
3440 Lustre (this is also safe to run on nodes without this problem).
3442 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3443 that can cause this same problem, so customers using that kernel
3444 also need to update the kernel in addition to Lustre. In order
3445 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3447 It is normal that files written just before a client crash (less
3448 than 30s) may not yet have been flushed to disk, even for local
3452 Frequency : frequent on thin XT3 nodes
3454 Description: UUID collision on thin XT3 Linux nodes
3455 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3456 randomly, since we relied on an insufficiently-seeded PRNG.
3461 Description: OSS hangs after "All ost request buffers busy"
3462 Details : A deadlock between quota and journal operations caused OSS
3463 hangs after printing "All ost request buffers busy."
3466 Frequency : always on liblustre builds
3468 Description: Cleanup compiler warnings on liblustre
3471 Frequency : always on liblustre builds on XT3
3473 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3477 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3478 > 32000 subdirectories
3479 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3480 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3481 subdirectory count crosses 32000. This will aid e2fsck to
3482 correctly handle more than 32000 subdirectories.
3485 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3487 Description: System hang on startup
3488 Details : This bug allowed the liblustre (e.g. catamount) client to
3489 return to the app before handling all startup RPCs. This
3490 could leave the node unresponsive to lustre network traffic
3491 and manifested as a server ptllnd timeout.
3493 Severity : enhancement
3495 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3496 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3497 boolean to control whether to print peer debug info when a
3498 client's RPC times out.
3503 Description: make O_SYNC working on 2.6 kernels
3504 Details : 2.6 kernels use different method for mark pages for write,
3505 so need add a code to lustre for O_SYNC work.
3510 Description: Failure to close file and release space on NFS
3511 Details : Put inode details into lock acquired in ll_intent_file_open.
3512 Use mdc_intent_lock in ll_intent_open to properly
3513 detect all kind of errors unhandled by mdc_enqueue.
3518 Description: proc file read during shutdown sometimes raced obd removal,
3520 Details : Add lock to prevent obd access after proc file removal.
3523 Frequency : Only for files larger than 4GB on 32-bit clients.
3525 Description: improperly doing page alignment of locks
3526 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3527 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3532 Description: RPCs being resent when they shouldn't be
3533 Details : Some RPCs that should not be resent are being resent. This
3534 can cause inconsistencies in the RPC state machine. Do not
3535 resend such requests.
3538 Frequency : rare, only with NFS export
3540 Description: Crash on NFS re-export node
3541 Details : under very unusual load conditions an assertion is hit in
3542 ll_intent_file_open()
3545 Frequency : only if OST filesystem is corrupted
3547 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3548 Details : for a short time RPCs with bulk IO are in the replay list,
3549 but replay of bulk IOs is unimplemented. If the OST filesystem
3550 is corrupted due to disk cache incoherency and then replay is
3551 started it is possible to trip an assertion. Avoid putting
3552 committed RPCs into the replay list at all to avoid this issue.
git://git.whamcloud.com / fs / lustre-release.git / blob