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 2.6.32-642.3.1.el6 (RHEL6.8)
10 3.10.0-327.28.2.el7 (RHEL7.2)
11 3.0.101-0.47.71 (SLES11 SP3)
12 3.0.101-77 (SLES11 SP4)
13 3.12.59-60.41 (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 2.6.32-642.3.1.el6 (RHEL6.8)
20 3.10.0-327.28.2.el7 (RHEL7.2)
21 3.0.101-0.47.71 (SLES11 SP3)
22 3.0.101-77 (SLES11 SP4)
23 3.12.59-60.41 (SLES12 SP1)
25 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
26 * Recommended ZFS / SPL version: 0.6.5.7
27 * Tested with ZFS / SPL version: 0.6.5.7
28 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
29 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
30 stack overflow. For more information, please refer to bugzilla 17630.
31 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
32 the re-exporting nodes to be mounted with "32bitapi" mount option
34 --------------------------------------------------------------------------------
36 02-29-2016 Intel Corporation
38 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
39 for currently supported client and server kernel versions.
40 * Server known to build on patched kernels:
41 2.6.32-431.29.2.el6 (RHEL6.5)
42 2.6.32-504.30.3.el6 (RHEL6.6)
43 2.6.32-573.12.1.el6 (RHEL6.7)
44 3.10.0-327.3.1.el7 (RHEL7.2)
45 3.0.101-0.47.71 (SLES11 SP3)
46 3.0.101-68 (SLES11 SP4)
47 vanilla linux 4.2.1 (ZFS only)
48 * Client known to build on unpatched kernels:
49 2.6.32-431.29.2.el6 (RHEL6.5)
50 2.6.32-504.30.3.el6 (RHEL6.6)
51 2.6.32-573.12.1.el6 (RHEL6.7)
52 3.10.0-327.3.1.el7 (RHEL7.2)
53 3.0.101-0.47.71 (SLES11 SP3)
54 3.0.101-68 (SLES11 SP4)
57 * Recommended e2fsprogs version: 1.42.13.wc4 or newer
58 * Recommended ZFS / SPL version: 0.6.4.2
59 * Tested with ZFS / SPL version: 0.6.4.2
60 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
61 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
62 stack overflow. For more information, please refer to bugzilla 17630.
63 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
64 the re-exporting nodes to be mounted with "32bitapi" mount option
66 --------------------------------------------------------------------------------
68 03-10-2015 Intel Corporation
70 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
71 for currently supported client and server kernel versions.
72 * Server known to build on patched kernels:
73 2.6.32-431.29.2.el6 (RHEL6.5)
74 2.6.32-504.8.1.el6 (RHEL6.6)
75 3.0.101-0.46 (SLES11 SP3)
76 * Client known to build on unpatched kernels:
77 2.6.32-431.29.2.el6 (RHEL6.5)
78 2.6.32-504.8.1.el6 (RHEL6.6)
79 3.10.0-123.20.1.el7 (RHEL7)
80 3.0.101-0.46 (SLES11 SP3)
81 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
82 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
83 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
84 stack overflow. For more information, please refer to bugzilla 17630.
85 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
86 the re-exporting nodes to be mounted with "32bitapi" mount option
88 Severity : enhancement
90 Description: control OST-index in IDIF via ROCOMPAT flag.
91 Details : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
92 last_rcvd file. For new formatted OST device, it will be auto set;
93 for the case of upgrading from old OST device, you can enable it
94 via the lproc interface osd-ldiskfs.index_in_idif. With such flag
95 enabled, for new created OST-object, its IDIF-in-LMA will contain
96 the OST-index; for the existing OST-object, the OSD will convert
97 old format IDIF as new format IDIF with OST-index stored in the
98 LMA EA when accessing such OST-object or via OI scrub. Once such
99 flag is enabled, it cannot be reverted back, so the system cannot
100 be downgraded to the orignal incompatible version.
102 --------------------------------------------------------------------------------
104 07-30-2014 Intel Corporation
106 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
107 for currently supported client and server kernel versions.
108 * Server known to build on patched kernels:
109 2.6.32-431.20.3.el6 (RHEL6.5)
110 3.0.101-0.31 (SLES11 SP3)
111 * Client known to build on unpatched kernels:
112 2.6.32-431.20.3.el6 (RHEL6.5)
113 3.0.101-0.31 (SLES11 SP3)
116 * Recommended e2fsprogs version: 1.42.9.wc1 or newer
117 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
118 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
119 stack overflow. For more information, please refer to bugzilla 17630.
120 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
121 the re-exporting nodes to be mounted with "32bitapi" mount option
123 --------------------------------------------------------------------------------
125 10-31-2013 Intel Corporation
127 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
128 * Server builds for kernels:
129 2.6.32-358.18.1.el6 (RHEL6.4)
130 * Client builds for unpatched kernels:
131 2.6.32-358.18.1.el6 (RHEL6.4)
132 3.0.92-0.8 (SLES11 SP3)
134 * Recommended e2fsprogs version: 1.42.7.wc2 or newer
135 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
136 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
137 stack overflow. For more information, please refer to bugzilla 17630.
138 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
139 the re-exporting nodes to be mounted with "32bitapi" mount option
141 --------------------------------------------------------------------------------
143 05-30-2013 Intel Corporation
145 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
146 * Server builds for kernels:
147 2.6.32-358.6.2.el6 (RHEL6.4)
148 * Client builds for unpatched kernels:
149 2.6.32-358.6.2.el6 (RHEL6.4)
150 3.0.74-0.6.6 (SLES11 SP2)
152 * Recommended e2fsprogs version: 1.42.7.wc1 or newer
153 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
154 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
155 stack overflow. For more information, please refer to bugzilla 17630.
156 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
157 the re-exporting nodes to be mounted with "32bitapi" mount option
159 --------------------------------------------------------------------------------
161 9-30-2012 Whamcloud, Inc.
163 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
164 * Server support for kernels:
165 2.6.32-279.5.1.el6 (RHEL6)
166 * Client support for unpatched kernels:
167 2.6.32-279.5.1.el6 (RHEL6)
169 2.6.18-238.19.1.el5 (RHEL5)
170 2.6.16.60-0.69.1 (SLES10)
171 * Recommended e2fsprogs version: 1.41.90.wc4
172 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
173 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
174 stack overflow. For more information, please refer to bugzilla 17630.
175 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
176 the re-exporting nodes to be mounted with "32bitapi" mount option
178 Severity : enhancement
180 Description: Update RHEL6.3 kernel to 2.6.32-279.5.1.el6.
182 Severity : enhancement
184 Description: Update RHEL6.3 kernel to 2.6.32-279.2.1.el6.
186 Severity : enhancement
188 Description: Update RHEL6.2 kernel to 2.6.32-220.17.1.el6
190 Severity : enhancement
192 Description: Update RHEL6.2 kernel to 2.6.32-220.13.1.el6
194 Severity : enhancement
196 Description: Update RHEL6.2 kernel to 2.6.32-220.7.1.el6
198 --------------------------------------------------------------------------------
200 04-30-2012 Whamcloud, Inc.
202 * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
203 * Server support for kernels:
204 2.6.32-220.4.2.el6 (RHEL6)
205 * Client support for unpatched kernels:
206 2.6.32-220.4.2.el6 (RHEL6)
208 2.6.18-238.19.1.el5 (RHEL5)
209 2.6.16.60-0.69.1 (SLES10)
210 * Recommended e2fsprogs version: 1.41.90.wc4
211 * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
212 since the NFSv4 export of Lustre filesystem with 4K stack may cause a
213 stack overflow. For more information, please refer to bugzilla 17630.
214 * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
215 the re-exporting nodes to be mounted with "32bitapi" mount option
217 Severity : enhancement
219 Description: Update RHEL6.2 kernel to 2.6.32-220.4.2.el6
221 Severity : enhancement
223 Description: Update RHEL6.2 kernel to 2.6.32-220.4.1.el6
225 Severity : enhancement
227 Description: Update RHEL6.2 kernel to 2.6.32-220.el6
229 Severity : enhancement
231 Description: Update RHEL6.1 kernel to 2.6.32-131.17.1.el6
233 --------------------------------------------------------------------------------
235 09-30-2011 Whamcloud, Inc.
237 * Server support for kernels:
238 2.6.18-238.19.1.el5 (RHEL5)
239 2.6.32-131.6.1.el6 (RHEL6)
240 * Client support for unpatched kernels:
241 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
242 2.6.18-238.19.1.el5 (RHEL5)
243 2.6.32-131.6.1.el6 (RHEL6)
244 2.6.29.4-167.fc11 (FC11)
245 2.6.16.60-0.69.1 (SLES10)
247 * Recommended e2fsprogs version: 1.41.90.wc3
248 * NFS export disabled when stack size < 8192. Since the NFSv4 export of
249 Lustre filesystem with 4K stack may cause a stack overflow. For more
250 information, please refer to bugzilla 17630.
251 * NFSv4 reexport requires Lustre client on the re-exporting nodes to be
252 mounted with "32bitapi" mount option
254 Severity : enhancement
255 Description: Update RHEL6.1 kernel to 2.6.32-131.6.1.el6
257 Severity : enhancement
258 Description: Update RHEL5.6 kernel to 2.6.18-238.19.1.el5
260 Severity : enhancement
261 Description: Update RHEL5.6 kernel to 2.6.18-238.9.1.el5
264 Frequency : only with SLES10
266 Description: Use OFED "KMP" provided by Novell
267 Details : SLES10 SP3 ships with OFED in a separate "KMP" package.
268 Lustre is now built against this package. That means you need to
269 install the ofed-kmp package from Novell for the patchless client.
270 Note that the ofed-kmp that Novell ships may not exactly match the
271 kernel version but should still be compatible.
273 Severity : enhancement
275 Description: Update RHEL5.5 kernel to 2.6.18-194.17.1.el5
276 Update OEL5.5 kernel to 2.6.18-194.17.1.0.1.el5.
278 --------------------------------------------------------------------------------
280 2010-07-15 Oracle, Inc.
282 * Server support for kernels:
283 2.6.18-164.11.1.el5 (RHEL 5)
284 2.6.18-164.11.1.0.1.el5 (OEL 5)
285 * Client support for unpatched kernels:
286 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
287 2.6.18-164.11.1.el5 (RHEL 5),
288 2.6.18-164.11.1.0.1.el5 (OEL 5)
289 2.6.16.60-0.42.8 (SLES 10),
291 2.6.29.4-167.fc11 (FC11)
292 * Recommended e2fsprogs version: 1.41.10-sun2
294 Severity : enhancement
296 Description: Distribute lfs_migrate script with lustre
297 Details : The lfs_migrate mentioned in the manual is now included in the
298 lustre tree in lustre/scripts and will distributed in lustre RPMs.
300 Severity : enhancement
302 Description: Failover nid list added to import proc file.
304 Severity : enhancement
306 Description: "som_preview" mount option required to use SOM
307 Details : The clients will need to use som_preview mount option
311 Description: Lustre does not do 1MB IOs to HW RAID
312 Details : Bump MAX_PHYS/HW_SEGMENTS and SG_ALL to 256 in the RHEL5 kernel.
314 Severity : enhancement
316 Description: lfs quota output is not very convenient for awk/sed-parsing
317 Details : Some positions in lfs quota output table could be empty or
318 non-empty which made it hard to parse it with scripts, now
319 a dash is put instead of space where there is not supposed
324 Description: Update to OFED 1.5.1
325 Details : OFED 1.5.1 will be used in environments that don't use
326 vendor supplied OFED.
330 Description: Remove lnet. prefix from lctl params display
331 Details : Also renamed lnet.memused to lnet_memused to
336 Description: Use conf_param -d to remove permanant settings.
340 Description: Add list_param -R
341 Details : lctl list_param now supports recursive mode.
344 Bugzilla : 21829, 22312
345 Description: Fix llobdstat.
346 Details : 1. Now updating the write_bytes counter
347 2. Port script fixes from 1.8.
351 Description: decrease the usage of memory on clients.
352 Details : 1. On clients, recycle dentries and inodes unused.
353 2. Delete the code related to ll_deathrow(att 6215 in bug 1443). It
358 Description: llobdstat fix and enhancement
359 Details : add a counter to set a limit to how many samples will be returned
360 fix a wildcard in the path to limit to obdfilter stats only
364 Description: lfs check only allowed for root
365 Details : Code cleanups and added a regresion test of non-root use of
370 Description: MDS Oopses in ptlrpc_dispatch_difficult_reply()/__list_add()
371 Details : Fix hr->hr_index overload.
375 Description: Fix FIEMAP functionality.
379 Description: FC11 patchless client support added
383 Description: Update RHEL5.4 kernel to 2.6.18-164.11.1.el5 and
384 OEL5.4 kernel to 2.6.18-164.11.1.0.1.el5.
388 Description: New acc-sm script and various test-framework enhancments.
392 Description: Previously landed patch was reverted.
396 Description: Update SLES10 kernel to 2.6.16.60-0.42.8 (patchless)
400 Description: Add ldiskfs maxdirsize mount option.
404 Description: Fix mkfs.lustre support for 16TB LUNs.
408 Description: Print mmp_check_interval
409 Details : print mmp_check_interval and make it possible to abort
410 mount operation in case it takes too long.
414 Description: Add cascading_rw to lustre mpi tests.
418 Description: Store SOM data in EA.
419 Details : Also several SOM related cleanups.
423 Description: Add refcount to md_open_data
427 Description: Use refcount on lov_request_set to prevent memory corruption.
431 Description: Statahead: use parent dir's i_mutex for synchronization.
435 Description: loadgen improvements.
439 Description: Enable peer health detection in ksocklnd and ko2iblnd.
443 Description: Control DCACHE_LUSTRE_INVALID flag with MDS_INODE_LOOKCUP lock
447 Description: Fix race on obd_devcie:md_stats
451 Description: Fix SLES 11 client builds.
452 Details : Resolved uninitalized pointer gcc warnings.
456 Description: Allow non-root access for "lfs check".
457 Details : Added a check in obd_class_ioctl() for OBD_IOC_PING_TARGET.
461 Description: Clear imp_force_reconnect correctly in ptlrpc_connect_interpret()
463 Severity : enhancement
465 Description: Update kernel to RHEL5.4 2.6.18-164.6.1.el5 and
466 OEL5 2.6.18-164.6.1.0.1.el5(Both in-kernel OFED enabled).
470 Description: Sanity test_27p fails.
471 Details : OBD_FAIL_OST_ENOSPC has been moved to filter_statfs().
472 Sanity tests 27 were cleaned up and improved.
476 Description: Unify req format on client/servers
477 Details : Use new req_capsule API [almost] everywhere instead of old PTLRPC
478 buffers and swabbers approach..
483 Description: drop join file stuff.
485 Severity : enhancement
487 Description: Add 2.6.27 and SLES11 (patchless client) support
491 Description: Fix in ptlrpc_expire_one_request() to print the signed time
494 Severity : enhancement
496 Description: Build kernels (RHEL5, OEL5 and SLES10/11) using the vendor's own
499 Severity : enhancement
501 Description: Remove set_info(KEY_UNLINKED) from MDS/OSC
503 Severity : enhancement
505 Description: correctly handle big reply message.
506 Details : send LNet event if reply is bigger than buffer and adjust this buffer
511 Description: Drop unnecessary __GFP_NOMEMALLOC flag from filter_get_page()
513 Severity : enhancement
515 Description: Add support for OEL5.
519 Description: Conf-sanity.sh 50g test - deactivated OST should not cause a panic.
521 Severity : enhancement
523 Description: "weak-modules" support
524 Details : Implement "weak-modules" support which enables kernel modules
525 to be used with any kernel that implements the same kABI. In
526 order to achieve this modules are now installed in
527 /lib/modules/$(uname -r)/updates/kernel on all distributions.
531 Description: client could not reconnect to OST because of an active request.
532 Details : The client now retries to reconnect to the same server, if a
533 connect request failed with EBUSY or -EAGAIN. Test case 35b
534 conf-sanity.sh has been created.
538 Description: Don't allow make backward step on assignin osc next id.
539 Details : race between allocation next id and ll_sync thread can be cause
540 of set wrong osc next id and can be kill valid ost objects.
544 Description: Changes in raid5-large-io-rhel5.patch to calculate sectors properly
548 Description: Increase the default BLK_DEF_MAX_SECTORS value for RHEL5 and SLES11
552 Description: Error handling in osc_statfs_interpret() has been improved.
553 Details : Check in osc_statfs_interpret() for EBADR.
557 Description: Do not send statfs() requests to OSTs disabled by administrator.
558 Details : Check in lov_prep_statfs_set() for non-NULL ltd_exp.
560 Severity : enhancement
562 Description: Added sanity-quota test to for lfs(1) to work with numeric uid/gid.
564 Severity : enhancement
566 Description: Update kernel to RHEL5 2.6.18-128.7.1.el5.
568 Severity : enhancement
570 Description: Enhancement for lfs(1) command to use numeric uid/gid.
574 Description: Improved cleanup procedure for conf-sanity test_46a.
578 Description: Do not start bulk transfer, if client tried to reconnect.
579 Details : Do not start bulk transfer, if client tried to reconnect,
580 but failed due to active rpcs. Check for exp_abort_active_req
581 has been implemented.
585 Description: Prevent inconsistences between linux and lustre mount structures.
586 Details : Wait indefinitely in server_wait_finished() until mnt_count drops.
587 Make the sleep interruptible.
589 Severity : enhancement
591 Description: provide server to client comms path
592 Details : server to client communications path via new LDLM_SET_INFO rpc
596 Description: truncate starts GFP_FS allocation under transaction causing deadlock
597 Details : ldiskfs_truncate calls grab_cache_page which may start page
598 allocation under an open transaction. This may lead to
599 calling prune_icache with consequent lustre reentrance.
603 Description: send correctly lsm on open replay
604 Details : MDS is trust to LSM size on replay open, but client can set wrong size
609 Description: enable client interface failover
610 Details : When a child reconnects from another NID, properly update export
611 nid hash position and ldlm reverse import.
613 Severity : enhancement
615 Description: Communicate OST degraded/readonly state via statfs to MDS
616 Details : Flags in the statfs returned from OSTs indicate whether the
617 OST is in a degraded RAID state, or if the filesystem has
618 turned read-only after a filesystem error is detected.
623 Description: don't panic if EPROTO was hit when reading symlink
624 Details : correctly handling request reference in error cases.
626 Severity : enhancement
628 Description: Add LustreNetLink, a kernel-userspace communcation path.
630 Severity : enhancement
632 Description: Update kernel to SLES10 SP2 2.6.16.60-0.39.3.
637 Description: access to llog context before init.
638 Details : move handling CATALOGS file at osc layer and forbid access to llog
642 Frequency : rare, only when client is writing to OST on local node
644 Description: Avoid deadlock for local client writes
645 Details : Use new OBD_BRW_MEMALLOC flag to notify OST about writes in the
646 memory freeing context. This allows OST threads to set the
647 PF_MEMALLOC flag on task structures in order to allocate memory
648 from reserved pools and complete IO.
649 Use GFP_HIGHUSER for OST allocations for non-local client writes,
650 so that the OST threads generate memory pressure and allow
651 inactive pages to be reclaimed.
653 Severity : enhancement
655 Description: Update kernel to RHEL5.3 2.6.18-128.1.14.el5.
660 Description: lock ordering violation between &cli->cl_sem and _lprocfs_lock
661 Details : move ldlm namespace creation in setup phase to avoid grab
662 _lprocfs_lock with cli_sem held.
666 Description: Temporarily disable grant shrink.
667 Details : Disable the feature for debugging.
670 Frequency : only when formatting test filesystems
672 Description: Unable to run several mkfs.lustre on loop devices at the same time
673 Details : mkfs.lustre returns error 256 on the concurrent loop devices
674 formatting. The solution is to proper handle the error.
676 Severity : enhancement
678 Description: Update kernel to RHEL5.3 2.6.18-128.1.6.el5.
680 Severity : enhancement
682 Description: Update kernel to SLES10 SP2 2.6.16.60-0.37.
687 Description: resolve race between obd_disconnect and class_disconnect_exports
688 Details : if obd_disconnect will be called to already disconnected export he
689 forget release one reference and osc module can't unloaded.
691 Severity : enhancement
693 Description: Allow tuning service thread via /proc
694 Details : For each service a new
695 /proc/fs/lustre/{service}/*/thread_{min,max,started} entry is
696 created that can be used to set min/max thread counts, and get the
697 current number of running threads.
702 Descriptoin: don't return error if have partially created objects for file.
703 Details : lov_update_create_set uses set->set_success as index for created
704 objects, so if some requests will be failed, they will have hole
705 at end of array and qos_shrink_lsm for allocate correct lsm.
707 Severity : enhancement
709 Description: Update OFED support to 1.4.1
714 Description: Reduce small size read RPC
715 Details : Set read-ahead limit for every file and only do read-ahead when
716 available read-ahead pages are bigger than 1M to avoid small size
719 Severity : enhancement
721 Description: move AT tunable parameters for more consistent usage
722 Details : add AT tunables under /proc/sys/lustre, add to conf_param parsing
724 Severity : enhancement
726 Description: add lazystatfs mount option to allow statfs(2) to skip down OSTs
727 Details : allow skip disconnected ost for send statfs request and hide error
733 Description: fix racy locking of mballoc block bitmaps causing BUG
734 Details : The locking of the mballoc buddy bitmap and the in-memory
735 block bitmap was using two different spin locks in some
736 cases. This made it possible to incorrectly access the
737 mballoc bitmap while another process was modifying it,
738 causing a sanity assertion to fail. While no on-disk corruption
739 was reported, there was some risk of this happening.
742 Frequency : rare, on llog test 6
744 Descriptoin: don't allow connect to already connected import
745 Details : allowing connect to already connected import is hide connecting problem.
750 Descriptoin: allow kill process which wait statahead result
751 Details : for some reasons 'ls' can stick in waiting result from statahead,
752 in this case need way for kill this process.
754 Severity : enhancement
756 Description: Add state history info file, enhance import info file
757 Details : Track import connection state changes in a new osc/mdc proc file;
758 add overview-type data to the osc/mdc import proc file.
760 Severity : enhancement
762 Description: MDS create should not wait for statfs RPC while holding DLM lock.
764 Severity : enhancement
766 Description: Update to RHEL5U3 kernel-2.6.18-128.1.1.el5.
771 Descriptoin: OST grant too much space to client even there are not enough space.
772 Details : Client will shrink its grant cache to OST if there are no write
773 activity over 6 mins (GRANT_SHRINK_INTERVAL), and OST will retrieve
774 this grant cache if there are already not enough avaible space
775 (left_space < total_clients * 32M).
778 Frequency : start MDS on uncleanly shutdowned MDS device
780 Descriptoin: ll_sync thread stay in waiting mds<>ost recovery finished
781 Details : stay in waiting mds<>ost recovery finished produce random bugs
782 due race between two ll_sync thread for one lov target. send
783 ACTIVATE event only if connect realy finished and import have
787 Frequency : rare, connect and disconnect target at same time
789 Descriptoin: ASSERTION(atomic_read(&imp->imp_inflight) == 0
790 Details : don't call obd_disconnect under lov_lock. this long time
791 operation and can block ptlrpcd which answer to connect request.
796 Descriptoin: don't lose wakeup for imp_recovery_waitq
797 Details : recover_import_no_retry or invalidate_import and import_close can
798 both sleep on imp_recovery_waitq, but we was send only one wakeup
802 Frequency : always with long access acl
804 Descriptoin: mds can't pack reply with long acl.
805 Details : mds don't control size of acl but they limited by reint/getattr
808 Severity : enhancement
810 Description: Update to SLES10 kernel-2.6.16.60-0.33.
812 Severity : enhancement
814 Description: Update to RHEL5 kernel-2.6.18-92.1.22.el5.
817 Frequency : start MDS on uncleanly shutdowned MDS device
819 Descriptoin: aborting recovery hang on MDS
820 Details : don't throttle destroy RPCs for the MDT.
823 Frequency : on remount
825 Description: external journal device not working after the remount
826 Details : clear dev_rdonly flag for external journal devices in
832 Description: shutdown vs evict race
833 Details : client_disconnect_export vs connect request race.
834 if client will evicted at this time - we start invalidate
835 thread without referece to import and import can be freed
839 Frequency : rare, need acl's on inode.
841 Description: client can't handle ost additional correctly
842 Details : if ost was added after client connected to mds client can have
843 hit lnet_try_match_md ... to big messages to wide striped files.
844 in this case need teach client to handle config events about add
845 lov target and update client max ea size at that event.
847 Severity : enhancement
849 Description: Changelogs
850 Details : Changelogs are a lightweight mechanism to track filesystem
851 metadata and namespace changes. The changelog is recorded
852 permanently on the MDTs, and is periodically "consumed" / purged
853 when records are no longer needed.
855 Severity : enhancement
857 Description: compact fld format with extents
858 Details : Store range of seq rather than every seq in FLD. Seq
859 controller update FLD rather than clients. In Case of CMD, mdt0
860 has FLD, all other metadata server act as non persistent proxy
861 for FLD queries and cache fld entries in fld cache.
866 Description: don't skip ost target if they assigned to file
867 Details : Drop slow OSCs if we can, but not for requested start idx.
868 This means "if OSC is slow and it is not the requested
869 start OST, then it can be skipped, otherwise skip it only
870 if it is inactive/recovering/out-of-space.
874 Description: more cleanup in mds_lov
875 Details : not send LOV EA under replay, we can't know about they size at this
876 time. Don't allow client connect to mds before any ost connected,
877 for avoid problems with LOV EA size and returning EIO to client.
879 Severity : enhancement
881 Description: Interoperability at server side (Disk interoperability)
883 Severity : enhancement
885 Description: Update to RHEL5 kernel-2.6.18-92.1.17.el5.
887 Severity : enhancement
889 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.31.
891 Severity : enhancement
893 Description: New client IO stack (CLIO).
895 Severity : enhancement
897 Description: Commit on sharing. Eliminate inter-client dependencies between
898 uncommitted transactions by doing transaction commits.
899 Thereby clients may recovery independently.
902 Frequency : Create a symlink file with a very long name
904 Description: ldlm_cancel_pack()) ASSERTION(max >= dlm->lock_count + count)
905 Details : If there is no extra space in the request for early cancels,
906 ldlm_req_handles_avail() returns 0 instead of a negative value.
908 Severity : enhancement
910 Description: Add /proc entry for import status
911 Details : The mdc, osc, and mgc import directories now have
912 an import directory that contains useful import data for debugging
915 Severity : enhancement
917 Description: Re-disable certain /proc logging
918 Details : Enable and disable client's offset_stats, extents_stats and
919 extents_stats_per_process stats logging on the fly.
922 Frequency : Only on FC kernels 2.6.22+
924 Description: oops in statahead
925 Details : Do not drop reference count for the dentry from VFS when lookup,
926 VFS will do that by itself.
928 Severity : enhancement
930 Description: Generic /proc file permissions
931 Details : Set /Proc file permissions in a more generic way to enable non-
932 root users operate on some /proc files.
936 Description: Hitting mdc_commit_close() ASSERTION
937 Details : Properly handle request reference release in
938 ll_release_openhandle().
942 Description: quota recovery deadlock during mds failover
943 Details : This patch includes att18982, att18236, att18237 in bz14840.
945 1. fix osts hang when mds does failover with quotaon
946 2. prevent watchdog storm when osts threads wait for the
951 Frequency : only patchless client
952 Description: add workaround for race between add/remove dentry from hash
954 Severity : enhancement
956 Description: Allow OST glimpses to return PW locks
960 Description: LBUG when llog conf file is full
961 Details : When llog bitmap is full, ENOSPC should be returned for plain log.
965 Description: Prevent import from entering FULL state when server in recovery
969 Description: service mount cannot take device name with ":"
970 Details : Only when device name contains ":/" will mount treat it as
976 Description: replace ptlrpcd with the statahead thread to interpret the async
977 statahead RPC callback
981 Frequency : on recovery
982 Description: I/O failures after umount during fail back
983 Details : if client reconnected to restarted server we need join to recovery
984 instead of find server handler is changed and process self
985 eviction with cancel all locks.
987 Severity : enhancement
989 Description: Update to RHEL5 kernel-2.6.18-92.1.10.el5.
991 Severity : enhancement
993 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
995 Severity : enhancement
997 Description: Upcall on Lustre log has been dumped
998 Details : Allow for a user mode script to be called once a Lustre log has
999 been dumped. It passes the filename of the dumped log to the
1000 script, the location of the script can be specified via
1001 /proc/sys/lnet/debug_log_upcall.
1006 Description: avoid idr_remove called for id which is not allocated.
1007 Details : Move assigment s_dev for clustered nfs to end of initialization,
1008 to avoid problem with error handling.
1013 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
1014 Details : When connection is reused this not moved from CONN_UNUSED_HASH
1015 into CONN_USED_HASH and this prodice warning when put connection
1016 again in unused hash.
1019 Severity : enhancement
1021 Description: File striping can now be set to use an arbitrary pool of OSTs.
1023 Severity : enhancement
1025 Description: Export bytes_read/bytes_write count on OSC/OST.
1029 Description: Early reply size mismatch, MGC loses connection
1030 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
1031 the connect flags are properly negotiated.
1036 Description: quotas are not honored with O_DIRECT
1037 Details : all writes with the flag O_DIRECT will use grants which leads to
1038 this problem. Now using OBD_BRW_SYNC to guard this.
1042 Description: add quota statistics
1043 Details : 1. sort out quota proc entries and proc code.
1044 2. add quota statistics
1046 Severity : enhancement
1048 Description: enable quota support for HEAD.
1052 Description: Properly propagate oinfo flags from lov to osc for statfs
1053 Details : restore missing copy oi_flags to lov requests.
1055 Severity : enhancement
1057 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
1058 : l_getgroups(8), lst(8), routerstat(8)
1059 Details : included man pages for llobdstat(8), llstat(8),
1060 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
1062 Severity : enhancement
1064 Description: configure's --enable-quota should check the
1065 : kernel .config for CONFIG_QUOTA
1066 Details : configure is terminated if --enable-quota is passed but
1067 : no quota support is in kernel
1071 Description: Remove portals compatibility
1072 Details : Remove portals compatibility, not interoperable with releases
1077 Description: Resolve device initialization race
1078 Details : Prevent proc handler from accessing devices added to the
1079 obd_devs array but yet be intialized.
1081 Severity : enhancement
1083 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
1085 Severity : enhancement
1087 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
1092 Description: Using wrong pointer in osc_brw_prep_request
1093 Details : Access to array[-1] can produce panic if kernel compiled with
1094 CONFIG_PAGE_ALLOC enabled
1098 Description: Client runs out of low memory
1099 Details : Consider only lowmem when counting initial number of llap pages
1103 Description: *optional* service tags registration
1104 Details : if the "service tags" package is installed on a Lustre node
1105 When the filesystem is mounted, a local-node service tag will
1106 be created. See http://inventory.sun.com/ for more information
1107 about the Service Tags asset management system.
1111 Description: Kernel BUG tries to release flock
1112 Details : Lustre does not destroy flock lock before last reference goes
1113 away. So always drop flock locks when client is evicted and
1114 perform unlock regardless of successfulness of speaking to MDS.
1118 Description: add refcount protection for osc callbacks, avoid panic on shutdown
1122 Description: sanity test 65a fails if stripecount of -1 is set
1123 Details : handle -1 striping on filesystem in ll_dirstripe_verify
1128 Description: ASSERTION(CheckWriteback(page,cmd)) failed
1129 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
1132 Severity : enhancement
1134 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
1138 Description: do not process already freed flock
1139 Details : flock can possibly be freed by another thread before it reaches
1140 to ldlm_flock_completion_ast.
1144 Description: LBUG during stress test
1145 Details : Need properly lock accesses the flock deadlock detection list.
1149 Description: oops in page fault handler
1150 Details : kernel page fault handler can return two special 'pages' in error
1151 case, don't try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
1155 Description: timeout with invalidate import.
1156 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which
1157 should be handled by ptlrpcd. This produce long age waiting and
1158 -ETIMEOUT ptlrpc_invalidate_import and as result LASSERT.
1160 Severity : enhancement
1162 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
1166 Description: enable MGS and MDT services start separately
1167 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
1168 a co-located MGS without starting the MGS, which is a complement
1169 to 'nosvc' mount option.
1173 Frequency : after recovery
1174 Description: precreate to many object's after del orphan.
1175 Details : del orphan st in oscc last_id == next_id and this triger growing
1176 count of precreated objects. Set flag LOW to skip increase count
1177 of precreated objects.
1181 Frequency : rare, on clear nid stats
1182 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
1183 Details : when clean nid stats sometimes try destroy live entry,
1184 and this produce panic in free.
1188 Description: Stack overflow during MDS log replay
1189 ease stack pressure by using a thread dealing llog_process.
1193 Description: wait until IO finished before start new when do lock cancel.
1194 Details : VM protocol want old IO finished before start new, in this case
1195 need wait until PG_writeback is cleared until check dirty flag and
1196 call writepages in lock cancel callback.
1198 Severity : enhancement
1200 Description: using special macro for print time and cleanup in includes.
1204 Description: mds_mfd_close() ASSERTION(rc == 0)
1205 Details : In mds_mfd_close(), we need protect inode's writecount change
1206 within its orphan write semaphore to prevent possible races.
1210 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
1214 Frequency : rare, on shutdown ost
1215 Description: don't hit live lock with umount ost.
1216 Details : shrink_dcache_parent can be in long loop with destroy dentries,
1217 use shrink_dcache_sb instead.
1221 Description: don't panic with use echo client
1222 Details : echo client pass NULL as client nid pointer and this produce null
1223 pointer dereference.
1227 Description: fix build on ppc32
1228 Details : compile code with -m64 flag produce wrong object file for ppc32.
1232 Description: add message levels for liblustreapi
1236 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
1237 Details : Move the 'good_osts' check before the 'total_bavail' check. This
1238 will result in an -EAGAIN and in the exit call path we call
1239 alloc_rr() which will with increasing aggressiveness attempt to
1240 aquire precreated objects on the minimum number of required OSCs.
1244 Description: Use old size assignment to avoid deadlock
1245 Details : Reverts the changes in bugs 2369 and bug 14138 that introduced
1246 the scheduling while holding a spinlock. We do not need locking
1247 for size in ll_update_inode() because size is only updated from
1248 the MDS for directories or files without objects, so there is no
1249 other place to do the update, and concurrent access to such inodes
1250 are protected by the inode lock.
1254 Description: resolve "_IOWR redefined" build error on SLES10
1258 Description: dump the memory debugging after all modules are unloaded to
1259 suppress false negative in conf_sanity test 39
1261 Severity : enhancement
1263 Description: build kernel-ib packages for OFED 1.3 in our release cycle
1268 Description: fix SLES kernel versioning
1269 Details : the kernel version for our SLES 10 kernel did not include a "-"
1270 before the "smp" at the end. while this was not a problem in
1271 general, it did mean that software trying to use the kernel
1272 version to try to detect a vendor specific kernel would fail.
1273 this was most evident by the OFED build scripts.
1277 Description: Don't update lov_desc members until making sure they are valid
1278 Details : When updating lov_desc members via proc fs, need fix their
1279 validities before doing the real update.
1283 Description: don't put request into delay list while invalidate in flight.
1284 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
1285 import in flight. this produce timeout for invalidate and sometimes
1286 can cause stale data.
1290 Frequency : on ppc only
1291 Description: not convert ost objects for directory because it's not exist.
1292 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
1296 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
1298 Severity : enhancement
1300 Description: Update to support 2.6.22.14 vanilla kernel.
1304 Frequency : rare, on recovery
1305 Description: read procfs can produce deadlock in some situation
1306 Details : Holding lprocfs lock which send rpc can produce block for destroy
1307 obd objects and this also block reconnect with -EALREADY. This
1308 isn't fix all lprocfs bugs - but make it rare.
1310 Severity : enhancement
1312 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
1315 Frequency : frequent on X2 node
1317 Description: mdc_set_open_replay_data LBUG
1318 Details : Set replay data for requests that are eligible for replay.
1322 Description: lustre_mgs: operation 101 on unconnected MGS
1323 Details : When MGC is disconnected from MGS long enough, MGS will evict the
1324 MGC, and late on MGC cannot successfully connect to MGS and a lot
1325 of the error messages complaining that MGS is not connected.
1329 Frequency : on network error
1330 Description: panic with double free request if network error
1331 Details : mdc_finish_enqueue is finish request if any network error ocuring,
1332 but it's true only for synchronus enqueue, for async enqueue
1333 (via ptlrpcd) this incorrect and ptlrpcd want finish request
1336 Severity : enhancement
1338 Description: client-side metadata stat-ahead during readdir(directory readahead)
1339 Details : perform client-side metadata stat-ahead when the client detects
1340 readdir and sequential stat of dir entries therein
1343 Frequency : on start mds
1345 Description: Implement get_info(last_id) in obdfilter.
1348 Frequency : occasional
1350 Description: Correctly check stale fid, not start epoch if ost not support SOM
1351 Details : open with flag O_CREATE need set old fid in op_fid3 because
1352 op_fid2 was overwritten with new generated fid, but mds can answer
1353 with one of these two fids and both is not stale. Setattr
1354 incorrectly started an epoch and assume will be called
1355 done_writing, but without SOM done_writing ever being called.
1358 Frequency : rare, depends on device drivers and load
1360 Description: MDS or OSS nodes crash due to stack overflow
1361 Details : Code changes in 1.8.0 increased the stack usage of some functions.
1362 In some cases, in conjunction with device drivers that use a lot
1363 of stack the MDS (or possibly OSS) service threads could overflow
1364 the stack. One change which was identified to consume additional
1365 stack has been reworked to avoid the extra stack usage.
1368 Frequency : occasional
1370 Description: Do not fail import if osc_interpret_create gets -EAGAIN
1371 Details : If osc_interpret_create got -EAGAIN it immediately exits and
1372 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
1373 oscc_has_objects and see OSC has no objests and call
1374 oscc_internal_create to resend create request.
1376 Severity : enhancement
1378 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
1380 Severity : enhancement
1382 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
1385 Frequency : very rare
1387 Description: Fix replay if there is an un-replied request and open
1388 Details : In some cases, older replay request will revert the
1389 mcd->mcd_last_xid on MDS which is used to record the client's
1390 latest sent request.
1392 Severity : enhancement
1394 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
1396 Severity : enhancement
1398 Description: Add rhel5 support to HEAD.
1400 Serverity : enhancement
1402 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
1407 Description: Don't allow skipping OSTs if index has been specified.
1408 Details : Don't allow skipping OSTs if index has been specified, make
1409 locking in internal create lots better.
1413 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
1414 Details : access to bitfield in structure is always rounded to long
1415 and this produce problem with not atomic change any bit.
1419 Description: Lustre make rpms failed.
1420 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
1421 builds Lustre rpms from tarball.
1424 Frequency : rare on shutdown ost
1426 Description: If llog cancel was not send before clean_exports phase, this can
1427 produce deadlock in llog code.
1428 Details : If llog thread has last reference to obd and call class_import_put
1429 this produce deadlock because llog_cleanup_commit_master wait when
1430 last llog_commit_thread exited, but this never success because was
1431 called from llog_commit_thread.
1435 Description: allow userland application know is lost one of stripes.
1436 Details : fill lvb_blocks with error code on ost and return it to
1437 application if error flag found.
1441 Description: NULL lov_tgts causing MDS oops
1442 Details : more safe checks for NULL lov_tgts for avoid oops.
1444 Severity : enhancement
1446 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
1450 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
1451 Details : If an OST is down the MDS will hang indefinitely in
1452 obd_statfs_rqset() waiting for the statfs data. While for
1453 MDS QOS usage of statfs, it should not stuck in waiting.
1455 Severity : enhancement
1457 Description: remote_acl support
1458 Details : Support ACL-based permission check for remote user.
1459 Support setfacl/getfacl for remote user with the utils
1460 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
1461 the system "{s,g}etfacl" utils.
1463 Severity : enhancement
1465 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
1467 Severity : enhancement
1469 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
1473 Description: make mgs_setparam() handle fsname containing dash
1474 Details : fsname containing a dash does not work with lctl conf_param
1476 Severity : enhancement
1478 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
1480 Severity : enhancement
1482 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
1486 Frequency : rare, at shutdown
1487 Description: access already free / zero obd_namespace.
1488 Details : if client_disconnect_export was called without force flag set,
1489 and exist connect request in flight, this can produce access to
1490 NULL pointer (or already free pointer) when connect_interpret
1491 store ocd flags in obd_namespace.
1495 Frequency : only at startup
1496 Description: not alloc memory with spinlock held.
1497 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
1498 if any spinlock held.
1500 Severity : enhancement
1502 Description: make lustre randomly fail allocating memory
1503 Details : Make lustre randomly failed allocating memory for testing purpose.
1505 Severity : enhancement
1507 Description: lost problems with lov objid file
1508 Details : Fixes some scability and access to not inited memory problems
1509 in work with lov objdid file.
1514 Description: lfs find does not continue on file error
1515 Details : Continue other files processing when a file/dir is absent.
1519 Description: Inconsistent usage of lustre_pack_reply()
1520 Details : Standardize the usage of lustre_pack_reply() such that it
1521 always generate a CERROR on failure.
1524 Frequency : occasional
1526 Description: MDS hang or stay in waiting lock
1527 Details : If client receive lock with CBPENDING flag ldlm need send lock
1528 cancel as separate rpc, to avoid situation when cancel request
1529 can't processed due all i/o threads stay in wait lock.
1533 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
1537 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
1541 Description: Update to SLES9 kernel-2.6.5-7.287.3.
1545 Description: Update to RHEL4 latest kernel.
1547 Severity : enhancement
1549 Description: Build SLES10 patchless client fails
1550 Details : The configure was broken by run ./configure with
1551 --with-linux-obj=.... argument for patchless client. When the
1552 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
1553 can't search header adequately. Use absolute path such as
1554 -I($LINUX)/include instead.
1558 Description: interrupt oig_wait produce painc on resend.
1559 Details : brw_redo_request can be used for resend requests from ptlrpcd and
1560 private set, and this produce situation when rq_ptlrpcd_data not
1561 copyed to new allocated request and triggered LBUG on assert
1562 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
1563 ptlrpcd set if request is changed and can be safety changed to use
1568 Description: LASSERT_{REQ,REP}SWAB macros are buggy
1569 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
1570 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
1571 these macros and replace them with their difinitions instead.
1575 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
1576 Details : Update which_patch & target file for SLES10 latest kernel.
1579 Description: Remove client patches from SLES 10 kernel.
1580 Details : This causes SLES 10 clients to behave as patchless clients
1581 even on a Lustre-patched (server) kernel.
1583 Severity : enhancement
1585 Description: self-adjustable client's lru lists
1586 Details : use adaptive algorithm for managing client cached locks lru
1587 lists according to current server load, other client's work
1588 pattern, memory activities, etc. Both, server and client
1589 side namespaces provide number of proc tunables for controlling
1592 Severity : enhancement
1594 Description: light-weight GSS support
1595 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
1596 and reduce performance overhead.
1598 Severity : enhancement
1600 Description: Linux keyring support
1601 Details : Support using service of Linux keyring for Lustre GSS internal
1602 context refresh/cache mechanism.
1606 Description: Fix errors in lfs documentation
1607 Details : Fixes man pages
1611 Description: don't use GFP_* in generic Lustre code.
1612 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
1616 Description: obdclass is limited by single OBD_ALLOC(idarray)
1617 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
1621 Description: warnings with build patchless client with vanila 2.6.19 and up
1622 Details : change old ctl_table style and replace ctl_table/ctl_table_header
1623 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
1627 Frequency : Only for SLES
1628 Description: sanity_quota fail test_1
1629 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
1630 file, which makes TSTID[2] inunique.
1634 Frequency : Only for SLES9
1635 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
1636 Details : Update target/ChangeLog/which_patch .
1640 Frequency : Only for test_10 in sanity-quota.sh
1641 Description: a bug in quota test code
1642 Details : checking a test flag in a wrong place
1646 Frequency : Only for test_13 in sanity-quota.sh
1647 Description: a bug in quota test script
1648 Details : shouldn't check overfull allocated quota
1652 Description: jbd statistics
1653 Details : Port older jbd statistics patch for sles10
1655 Severity : enhancement
1657 Description: Add printing inode info into message about error in writepage.
1662 Description: reply_lock_interpret crash due to race with it and lock cancel.
1663 Details : Do not replay locks that are being cancelled. Do not reference
1664 locks by their address during replay, just by their handle.
1668 Frequency : When flocks are used.
1669 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
1670 Details : Flock locks might destroy just granted lock if it could be merged
1671 with another existing flock, this is done in completion handler,
1672 so teach ldlm_cli_enquque_fini that this is a valid case for
1678 Description: Oops in read and write path when failing to allocate lock.
1679 Details : Check if lock allocation failed and return error back.
1683 Description: lstripe command fails for valid OST index
1684 Details : The stripe offset is compared to lov->desc.ld_tgt_count
1685 instead of lov->desc.ld_active_tgt_count.
1689 Description: sanity.sh failed test 103
1690 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
1695 Description: df doesn't work properly if diskfs blocksize != 4K
1696 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
1700 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
1701 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
1703 Severity : enhancement
1705 Description: Adaptive timeouts
1706 Details : RPC timeouts adapt to changing server load and network
1707 conditions to reduce resend attempts and improve recovery time.
1711 Description: llapi_file_create() does not allow some changes
1712 Details : add llapi_file_open() that allows specifying the mode and
1713 open flags, and also returns an open file handle.
1717 Description: merge and cleanup kernel patches.
1718 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
1722 Description: Add journal checksum support.(Kernel part)
1723 Details : The journal checksum feature adds two new flags i.e
1724 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
1725 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
1726 indicates that the commit block contains the checksum for
1727 the blocks described by the descriptor blocks. Now commit
1728 record can be sent to disk without waiting for descriptor
1729 blocks to be written to disk. This behavior is controlled
1730 using JBD2_FEATURE_ASYNC_COMMIT flag.
1734 Description: OSS needs mutliple precreate threads
1735 Details : Add ability to start more than one create thread per OSS.
1739 Description: Sanity.sh test_65k failed: setstripe should have succeeded
1740 Details : execute lfs setstripe on client
1744 Description: mds_obd_create error creating tmp object
1745 Details : When the user sets quota on root, llog will be affected and can't
1746 create files and write files.
1749 Frequency : Always on ia64 patchless client, and possibly others.
1751 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
1752 Details : This allows the patchless client to be loaded on architectures
1753 without this export.
1757 Description: RedHat Update kernel for RHEL5
1758 Details : Add the kernel config file for RHEL5.
1762 Description: RedHat Update kernel for RHEL5
1763 Details : Modify the kernel config file more closer RHEL5.
1767 Description: Build failure against Centos5 (RHEL5)
1768 Details : Define PAGE_SIZE when it isn't present.
1772 Description: test_7 on sanity-quota.sh can't be used on separate machines
1773 Details : add facet to handle it
1777 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
1778 Details : with NFS, the anon dentry's parent was set to itself in
1779 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
1780 corresponding dentry other than use rec->ur_name.
1782 Severity : enhancement
1784 Description: lfs setstripe enhancement
1785 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
1789 Description: enable data checksumming by default
1790 Details : enable checksum by default, allow --disable-checksum
1791 configure option and "-o nochecksum" mount option. Checksums
1792 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
1796 Description: lustre support for RHEL5
1797 Details : Add support for RHEL5.
1801 Description: Client eviction due to failover config
1802 Details : after a connection loss, the lustre client should attempt to
1803 reconnect to the last active server first before trying the
1804 other potential connections.
1808 Description: when mds and osts use different quota unit(32bit and 64bit),
1809 quota will be released repeatly.
1810 Details : void sending multiple quota reqs to mds, which will keep the
1811 status between the reqs.
1815 Description: osts not allocated evenly to files
1816 Details : change the condition to increase offset_idx
1819 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
1821 Description: Data corruption for OSTs that are formatted larger than 2TB
1823 Details : When generating the bio request for lustre file writes the
1824 sector number would overflow a temporary variable before being
1825 used for the IO. The data reads correctly from Lustre (which
1826 will overflow in a similar manner) but other file data or
1827 filesystem metadata may be corrupted in some cases.
1831 Description: Tune the kernel for good SCSI performance.
1832 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
1833 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
1838 Description: rewrite ext2-derived code in obdclass/uuid.c
1839 Details : rewrite inherited code (uuid parsing code from ext2 utils)
1840 from scratch preserving functionality.
1844 Description: "lfs find -obd UUID" prints directories
1845 Details : "lfs find -obd UUID" will return all directory names instead
1846 of just file names. It is incorrect because the directories
1847 do not reside on the OSTs.
1851 Description: use i_size_read and i_size_write in 2.6 port
1852 Details : replace inode->i_size access with i_size_read/write()
1855 Frequency : when removing large files
1857 Description: scheduling issue during removal of large Lustre files
1858 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
1859 It causes scheduling issues when removing large files (17TB in the
1863 Frequency : only with liblustre clients on XT3
1865 Description: evictions taking too long
1866 Details : allow llrd to evict clients directly on OSTs
1869 Frequency : only on ppc
1871 Description: /proc/fs/lustre/devices broken on ppc
1872 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
1873 We should make sure the type of 'index' is loff_t and then cast
1874 explicitly as needed below. Do not assign an explicitly cast
1878 Frequency : only for rhel5
1880 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
1881 Details : Modify the target file & which_kernel.
1883 Severity : enhancement
1885 Description: omit set fsid for export NFS
1886 Details : fix set/restore device id for avoid EMFILE error and mark lustre
1887 fs as FS_REQUIRES_DEV for avoid problems with generate fsid.
1891 Frequency : Always, for kernels after 2.6.16
1892 Description: Fix warning idr_remove called for id=.. which is not allocated.
1893 Details : Last kernels save old s_dev before kill super and not allow
1894 to restore from callback - restore it before call kill_anon_super.
1898 Description: buffer overruns could theoretically occur
1899 Details : llapi_semantic_traverse() modifies the "path" argument by
1900 appending values to the end of the origin string, and a
1901 overrun may occur. Adding buffer overrun check in liblustreapi.
1905 Description: Fix error on 'ls .' at the top of the Lustre mount.
1906 Details : Don't revalidate dentry if it is a root dentry.
1910 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
1911 Details : Modify vm-tunables-rhel4.patch.
1915 Description: Kernel config for 2.6.18-vanilla.
1916 Details : Modify targets/2.6-vanilla.target.in.
1917 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
1918 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
1919 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
1920 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
1924 Description: improve handling recoverable errors
1925 Details : if request processig with error which can be recoverable on server
1926 request should be resend, otherwise page released from cache and
1931 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
1932 Details : Modify target file & which_patch.
1933 A flaw was found in the IA32 system call emulation provided
1934 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
1935 value could be stored in the %RAX register, which could trigger an
1936 out-of-bounds system call table access. An untrusted local user
1937 could exploit this flaw to run code in the kernel
1938 (ie a root privilege escalation). (CVE-2007-4573).
1942 Description: O_DIRECT bypasses client statistics.
1943 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
1944 read_ahead_stats were updated. copied the stats section from
1945 osc_send_oap_rpc() into async_internal().
1949 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
1953 Description: change order of libsysio includes
1954 Details : '#include sysio.h' should always come before '#include xtio.h'
1958 Description: handle "serious error: objid * already exists" more gracefully
1959 Details : If LAST_ID value on disk is smaller than the objects existing in
1960 the O/0/d* directories, it indicates disk corruption and causes an
1961 LBUG(). If the object is 0-length, then we should use the existing
1962 object. This will help to avoid a full fsck in most cases.
1964 Severity : enhancement
1966 Description: adapt the lustre_config script to support the upgrade case
1967 Details : Add "-u" option for lustre_config script to support upgrading 1.4
1968 server targets to 1.6 in parallel.
1972 Description: To avoid grant space > avaible space when the disk is almost
1973 full. Without this patch you might see the error "grant XXXX >
1974 available" or some LBUG about grant, when the disk is almost
1976 Details : In filter_check_grant, for non_grant cache write, we should
1977 check the left space by if (*left > ungranted + bytes), instead
1978 of (*left > ungranted), because only we are sure the left space
1979 is enough for another "bytes", then the ungrant space should be
1980 increase. In client, we should update cl_avail_grant only there
1981 is OBD_MD_FLGRANT in the reply.
1985 Description: Update RHEL 4 kernel to fix local root privilege escalation.
1986 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
1987 described in CVE-2007-4573. This problem could allow untrusted
1988 local users to gain root access.
1991 Frequency : when using O_DIRECT and quotas
1993 Description: Incorrect file ownership on O_DIRECT output files
1994 Details : block usage reported by 'lfs quota' does not take into account
1995 files that have been written with O_DIRECT.
2000 Description: touch file failed when fs is not full
2001 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
2002 otherwise we can get ENOSP while fs is not full.
2006 Description: parallel lock callbacks
2007 Details : Instead of sending blocking and completion callbacks as separated
2008 requests, adding them to a set and sending in parallel.
2011 Frequency : only for Cray XT3
2012 Bugzilla : 12829/13455
2013 Description: Changing primary group doesn't change the group lustre assigns to
2015 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
2016 overridden with the primary group provided by the group upcall,
2017 whereas the supplied fsgid can be trusted if it is in the list of
2018 supplementary groups returned by the group upcall.
2020 Severity : enhancement
2022 Description: Allow masking D_WARNING, D_ERROR messages from console
2023 Details : Console messages can now be disabled via lnet.printk.
2027 Description: User code with malformed file open parameter crashes client node
2028 Details : Before packing join_file req, all the related reference should be
2029 checked carefully in case some malformed flags cause fake
2030 join_file req on client.
2034 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
2035 Details : ldlm_completion_ast() assumes that a lock is granted when the req
2036 mode is equal to the granted mode. However, it should also check
2037 that LDLM_FL_CP_REQD is not set.
2041 Description: Heavy nfs access might result in deadlocks
2042 Details : After ELC code landed, it is now improper to enqueue any mds
2043 locks under och_sem, because enqueue might want to decide to
2044 cancel open locks for same inode we are holding och_sem for.
2048 Description: Client eviction while running blogbench
2049 Details : A lot of unlink operations with concurrent I/O can lead to a
2050 deadlock causing evictions. To address the problem, the number of
2051 oustanding OST_DESTROY requests is now throttled to
2052 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
2053 callbacks are processed in priority.
2057 Description: enable ACLs on MDS by default
2058 Details : ACLs must be enabled on MDS by default.
2061 Frequency : PPC/PPC64 only
2063 Description: conflicts between asm-ppc64/types.h and lustre_types.h
2064 Details : fix duplicated definitions between asm-ppc64/types.h and
2065 lustre_types.h on PPC.
2068 Frequency : PPC/PPC64 only
2070 Description: asm-ppc/segment.h does not exist
2071 Details : fix compile issue on PPC.
2075 Description: better handle error messages in extents code
2078 Frequency : RHEL4 only
2080 Description: mkfs is very slow on IA64/RHEL4
2081 Details : A performance regression has been discovered in the MPT Fusion
2082 driver between versions 3.02.73rh and 3.02.99.00rh. As a
2083 consequence, we have downgraded the MPT Fusion driver in the RHEL4
2084 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
2086 Severity : enhancement
2088 Description: SNMP support enhancement
2089 Details : Adding total number of sampled request for an MDS node in snmp
2092 Severity : enhancement
2094 Description: Optimize ldlm waiting list processing for PR extent locks
2095 Details : When processing waiting list for read extent lock and meeting read
2096 lock that is same or wider to it that is not contended, skip
2097 processing rest of the list and immediatelly return current
2098 status of conflictness, since we are guaranteed there are no
2099 conflicting locks in the rest of the list.
2103 Description: Time out and refuse to reconnect
2104 Details : When the failover node is the primary node, it is possible
2105 to have two identical connections in imp_conn_list. We must
2106 compare not conn's pointers but NIDs, otherwise we can defeat
2107 connection throttling.
2111 Description: port llog fixes from b1_6 into HEAD
2112 Details : Port llog reference couting and some llog cleanups from b1_6
2113 (bug 10800) into HEAD, for protect from panic and access to already
2114 free llog structures.
2118 Description: Detect stride IO mode in read-ahead
2119 Details : When a client does stride read, read-ahead should detect that and
2120 read-ahead pages according to the detected stride pattern.
2124 Description: data checksumming impacts single node performance
2125 Details : add support for several checksum algorithm. Currently, only CRC32
2126 and Adler-32 are supported. The checksum type can be changed on
2127 the fly via /proc/fs/lustre/osc/*/checksum_type.
2131 Description: use adler32 for page checksums
2132 Details : when available, use the Adler-32 algorithm instead of CRC32 for
2137 Description: build for x2 fails
2138 Details : fix compile issue on Cray systems.
2142 Description: Properly match for duplicate locks
2143 Details : Due to different lock order from skiplists code, we need to
2144 traverse entire list for now
2147 Frequency : only on PPC/SLES10
2149 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
2150 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
2151 be defined. Add a hack in mkfs_lustre.c to work around this compile
2156 Description: LASSERT on MDS when client holding flock lock dies
2157 Details : ldlm pool logic depends on number of granted locks equal to
2158 number of released locks which is not true for flock locks, so
2159 just exclude such locks from consideration.
2163 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
2164 Details : Use fsfilt_sync() for both the whole filesystem sync and
2165 individual file sync to eliminate dangerous inode locking
2166 with I_LOCK that can lead to a deadlock.
2170 Description: performance in 1.6.3
2171 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
2172 sure that 1MB requests are not fragmented by the block layer.
2174 Severity : enhancement
2176 Description: organize the server-side client stats on per-nid basis
2177 Details : Change the structure of stats under obdfilter and mds to
2185 The "uuid"s file would list the uuids of _active_ exports.
2186 And the clear entry is to clear all stats and stale nids.
2188 Severity : enhancement
2190 Description: eliminate client locks in face of contention
2191 Details : file contention detection and lockless i/o implementation
2192 for contended files.
2196 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
2199 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
2201 Description: MDS may lose file striping (and hence file data) in some cases
2202 Details : If there are additional extended attributes stored on the MDS,
2203 in particular ACLs, SELinux, or user attributes (if user_xattr
2204 is specified for the client mount options) then there is a risk
2205 of attribute loss. Additionally, the Lustre file striping
2206 needs to be larger than default (e.g. striped over all OSTs),
2207 and an additional attribute must be stored initially in the
2208 inode and then increase in size enough to be moved to the
2209 external attribute block (e.g. ACL growing in size) for file
2214 Description: skiplist implementation simplification
2215 Details : skiplists are used to group compatible locks on granted list
2216 that was implemented as tracking first and last lock of each
2217 lock group the patch changes that to using doubly linked lists
2221 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
2222 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
2223 because LASSERT on both the data supplied by a client, and the
2224 data on disk is dangerous and incorrect.
2226 Severity : enhancement
2228 Description: Slow truncate/writes to huge files at high offsets.
2229 Details : Directly associate cached pages to lock that protect those pages,
2230 this allows us to quickly find what pages to write and remove
2231 once lock callback is received.
2235 Description: more ldlm soft lockups
2236 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
2237 starve other threads from the resource lock for a long time in
2238 case of long waiting queue, so change the debug level from
2239 D_OTHER to the less frequently used D_INFO.
2241 Severity : enhancement
2243 Description: add -gid, -group, -uid, -user options to lfs find
2247 Description: Hung threads in invalidate_inode_pages2_range
2248 Details : The direct IO path doesn't call check_rpcs to submit a new RPC
2249 once one is completed. As a result, some RPCs are stuck in the
2250 queue and are never sent.
2254 Description: filter threads hungs on waiting journal commit
2255 Details : Cleanup filter group llog code, then only filter group llog will
2256 be only created in the MDS/OST syncing process.
2260 Description: Procfs and llog threads access destoryed import sometimes.
2261 Details : Sync the import destoryed process with procfs and llog threads by
2262 the import refcount and semaphore.
2264 Severity : enhancement
2266 Description: openlock cache of b1_6 port to HEAD
2271 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
2272 Details : If insertion of an extent fails, then discard the inode
2273 preallocation and free data blocks else it can lead to duplicate
2278 Description: don't always update ctime in ext3_xattr_set_handle()
2279 Details : Current xattr code updates inode ctime in ext3_xattr_set_handle.
2280 In some cases the ctime should not be updated, for example for
2281 2.0->1.8 compatibility it is necessary to delete an xattr and it
2282 should not update the ctime.
2286 Bugzilla : 15713/16362
2287 Description: Assertion in iopen_connect_dentry in 1.6.3
2288 Details : looking up an inode via iopen with the wrong generation number can
2289 populate the dcache with a disconneced dentry while the inode
2290 number is in the process of being reallocated. This causes an
2291 assertion failure in iopen since the inode's dentry list contains
2292 both a connected and disconnected dentry.
2296 Description: assertion failure in ldlm_handle2lock()
2297 Details : fix a race between class_handle_unhash() and class_handle2object()
2298 introduced in lustre 1.6.5 by bug 13622.
2303 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
2304 Details : remove the limit of 256 scsi disks in the sd_iostat patch
2309 Description: oops in sd_iostats_seq_show()
2310 Details : unloading/reloading the scsi low level driver triggers a kernel
2311 bug when trying to access the sd iostat file.
2316 Description: Kernel panics during QLogic driver reload
2317 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
2318 patch, causing memory corruption.
2323 Description: journal_dev option does not work in b1_6
2324 Details : pass mount option during pre-mount.
2326 Severity : enhancement
2328 Description: Add a FIEMAP(FIle Extent MAP) ioctl
2329 Details : FIEMAP ioctl will allow an application to efficiently fetch the
2330 extent information of a file. It can be used to map logical blocks
2331 in a file to physical blocks in the block device.
2335 Description: LDLM soft lockups - improvement
2336 Details : It is be possible to send the lock handle along with each read
2337 or write request because the client is already doing a lock match
2338 itself so there isn't any reason the OST should have to re-do that
2342 Frequency : only on Cray X2
2344 Description: X2 build failures
2345 Details : fix build failures on Cray X2.
2349 Description: xid & resent requests
2350 Details : Initialize RPC XID from clock at startup (randomly if clock is
2353 Severity : enhancement
2355 Description: Add lustre_start utility to start or stop multiple Lustre servers
2360 Description: Lustre GPF in {:ptlrpc:ptlrpc_server_free_request+373}
2361 Details : In case of memory pressure, list_del() can be called twice on
2362 req->rq_history_list, causing a kernel oops.
2366 Description: kptllnd_peer_check_sends()) ASSERTION(!in_interrupt()) failed
2367 Details : fix stack overflow in the distributed lock manager by defering
2368 export eviction after a failed AST to the elt thread instead of
2369 handling it in the dlm interpret routine.
2373 Description: Convert some comments to new format.
2374 Details : Update documenting comments to match doxygen conventions.
2378 Description: Grammar fixes.
2379 Details : A couple of trivial spelling fixes.
2383 Description: OSD_COUNTERS-mandatory
2384 Details : Make previously optional ->oti_{w,r}_locks sanity checks mandatory
2385 to simplify the code.
2389 Description: simplify cmm_device freeing logic.
2390 Details : Call cmm_device_free() in the failure path of cmm_device_alloc().
2394 Description: Add lockdep support to dt_object_operations locking interface.
2395 Details : Augment ->do_{read,write}_lock() prototypes with a `role'
2396 parameter indicating lock ordering. Update mdd code to use new
2401 Description: Introduce failloc constants for lockless IO tests.
2402 Details : Add two new failloc constants to test lockless IO. Only one of
2403 them in implemented---another is checked in yet to be landed
2408 Description: Add lockdep support for inode mutex.
2409 Details : Introduce and use new LOCK_INODE_MUTEX_PARENT() macro to be used
2410 in the situations where Lustre has to lock more than one inode
2415 Description: Add optional invariants checking support.
2416 Details : Add new LINVRNT() macro, optional on new --enable-invariants
2417 configure switch. This macro is to be used for consistency and
2418 sanity checks that are too expensive to be left in `production'
2423 Description: Zap lock->l_granted_mode with explicit LCK_MINMODE.
2424 Details : Use LCK_MINMODE rather than 0 to reset lock->l_granted_mode to
2429 Description: Add lockdep support for ldlm_lock and ldlm_resource.
2430 Details : Use spin_lock_nested() in (the only) situation where more than
2431 one ldlm_lock is locked simultaneously. Also, fix possible
2432 dead-lock in ldlm_lock_change_resource() by enforcing particular
2437 Description: Use struct ldlm_callback_suite in ldlm_lock_create().
2438 Details : Instead of specifying each ldlm_lock call-back through separate
2439 parameter, wrap them into struct ldlm_callback_suite.
2443 Description: Kill join_lru obd method and its callers.
2444 Details : CLIO uses lock weighting policy to keep locks over mmapped regions
2445 in memory---a requirement implemented through ->o_join_lru() obd
2446 method in HEAD. Remove this method and its users.
2450 Description: Add asynchronous ldlm ENQUEUE completion handler.
2451 Details : CLIO posts ENQUEUE requests asynchronously through ptlrpcd---a
2452 case that stock ldlm_completion_ast() cannot handle as it waits
2453 until lock is granted. Introduce new ldlm_completion_ast_async()
2454 for this. Also comment ldlm_completion_ast().
2458 Description: ldlm_error <-> errno conversion.
2459 Details : Add functions to map (rather arbitrary) between LDLM error codes
2460 and standard errno values. CLIO needs this to prevent LDLM specific
2461 constants from escaping ldlm and osc.
2465 Description: Kill unused ldlm_handle2lock_ns() function.
2466 Details : Kill unused ldlm_handle2lock_ns() function.
2470 Description: Add lu_ref support to ldlm_lock
2471 Details : lu_ref support for ldlm_lock and ldlm_resource. See lu_ref patch.
2472 lu_ref fields ->l_reference and ->lr_reference are added to ldlm_lock
2473 and ldlm_resource. LDLM interface has to be changed, because code that
2474 releases a reference on a lock, has to "know" what reference this is.
2475 In the most frequent case
2477 lock = ldlm_handle2lock(handle);
2479 LDLM_LOCK_PUT(lock);
2481 no changes are required. When any other reference (received _not_ from
2482 ldlm_handle2lock()) is released, LDLM_LOCK_RELEASE() has to be called
2483 instead of LDLM_LOCK_PUT().
2485 Arguably, changes are pervasive, and interface requires some discipline
2486 for proper use. On the other hand, it was very instrumental in finding
2487 a few leaked lock references.
2491 Description: Add ldlm_lock_addref_try().
2492 Details : Introduce ldlm_lock_addref_try() function (used by CLIO) that
2493 attempts to addref a lock that might be being canceled
2498 Description: Add ldlm_weigh_callback().
2499 Details : Add new ->l_weigh_ast() call-back to ldlm_lock. It is called
2500 by ldlm_cancel_shrink_policy() to estimate lock "value", instead of
2501 hard-coded `number of pages' logic.
2505 Description: Add lockdep annotations to llog code.
2506 Details : Use appropriately tagged _nested() locking calls in the places
2507 where llog takes more than one ->lgh_lock lock.
2511 Description: Add loi_kms_set().
2512 Details : Wrap kms updates into a helper function.
2516 Description: Constify instances of struct lsm_operations.
2517 Details : Constify instances of struct lsm_operations.
2521 Description: lu_conf support.
2522 Details : On a server, a file system object is uniquely identified
2523 by a fid, which is sufficient to locate and load all object
2524 state (inode). On a client, on the other hand, more data are
2525 necessary instantiate an object. Change lu_object_find() and
2526 friends to take additional `lu_conf' argument describing object.
2527 Typically this includes layout information.
2531 Description: lu_context fixes.
2532 Details : Introduce new lu_context functions that are needed on the client
2533 side, where some system threads (ptlrpcd) are shared by multiple
2534 modules, and so cannot be stopped during module shutdown.
2538 Description: Add start and stop methods to lu_device_type_operations.
2539 Details : Introduce two new methods in lu_device_type_operations, that are
2540 invoked when first instance of a given type is created and last one
2541 is destroyed respectively. This is need by CLIO.
2545 Description: Add lu_ref support to struct lu_device.
2546 Details : Add lu_ref support to lu_object and lu_device. lu_ref is used to
2547 track leaked references.
2551 Description: Introduce lu_kmem_descr.
2552 Details : lu_kmem_descr and its companion interface allow to create
2553 and destroy a number of kmem caches at once.
2557 Description: Fix lu_object finalization race.
2558 Details : Fix a race between lu_object_find() finding an object and its
2559 concurrent finalization. This race is (most likely) not possible
2560 on the server, but might happen on the client.
2564 Description: Introduce lu_ref interface.
2565 Details : lu_ref is a debugging module allowing to track references to
2566 a given object. It is quite cpu expensive, and has to be
2567 explicitly enabled with --enable-lu_ref. See usage description
2572 Description: Factor lu_site procfs stats into a separate function.
2573 Details : Separate lu_site stats printing code into a separate function
2574 that can be reused on a client.
2578 Description: Constify instances of struct {lu,dt,md}_device_operations.
2579 Details : Constify instances of struct {lu,dt,md}_device_operations.
2583 Description: Introduce struct md_site and move meta-data specific parts of
2584 struct lu_site here.
2585 Details : Move md-specific fields out of struct lu_site into special struct
2586 md_site, so that lu_site can be used on a client.
2590 Description: Kill mdd_lov_destroy().
2591 Details : Remove unused mdd code.
2595 Description: Add st_block checking to multistat.c.
2596 Details : Add st_block checking to multistat.c.
2600 Description: Add lu_ref support to struct obd_device.
2601 Details : Add lu_ref tracking to obd_device.
2605 Description: Kill obd_set_fail_loc().
2606 Details : Remove unused code.
2610 Description: Add special type for ptlrpc_request interpret functions.
2611 Details : Add lu_env parameter to ->rq_interpreter call-back. NULL is passed
2612 there. Actual usage will be in CLIO.
2616 Description: Replace RW_LOCK_UNLOCKED() macro with rwlock_init().
2617 Details : Replace RW_LOCK_UNLOCKED() with rwlock_init() as the former
2618 doesn't work with lockdep.
2622 Description: Add rwv.c test program.
2623 Details : New testing program exercising readv(2) and writev(2) (Qian).
2627 Description: Add sendfile.c test program.
2628 Details : New testing program exercising sendfile(2) (Jay).
2632 Description: Ratelimit a message that can be very frequent.
2633 Details : Ratelimit a memory allocation failure message that can
2638 Description: Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2639 Details : Use cdebug_show() in CDEBUG-style macros defined outside of libcfs.
2643 Description: Liblustre build fixes.
2644 Details : Liblustre build fixes.
2648 Description: libcfs: add cfs_{need,cond}_resched() interface.
2649 Details : libcfs: add cfs_{need,cond}_resched() definition and
2650 implementations for Linux, NT, and liblustre.
2652 Severity : enhancement
2654 Description: More exported tunables for mballoc
2655 Details : Add support for tunable preallocation window and new tunables for
2656 large/small requests
2660 Description: Detect corruption of block bitmap and checking for preallocations
2661 Details : Checks validity of on-disk block bitmap. Also it does better
2662 checking of number of applied preallocations. When corruption is
2663 found, it turns filesystem readonly to prevent further corruptions.
2667 Description: (rw.c:1323:ll_read_ahead_pages()) ASSERTION(page_idx > ria->ria_stoff) failed
2668 Details : Once the unmatched stride IO mode is detected, shrink the stride-ahead
2669 window to 0. If it does hit cache miss, and read-pattern is still
2670 stride-io mode, does not reset the stride window, but also does not
2671 increase the stride window length in this case.
2675 Frequency : only for big-endian servers
2676 Description: Check if system is big-endian while mounting fs with extents feature
2677 Details : Mounting a filesystem with extents feature will fail on big-endian
2678 systems since ext3-based ldiskfs is not supported on big-endian
2679 systems. This can be over-riden with "bigendian_extents" mount option.
2681 Severity : enhancement
2683 Description: The root squash functionality
2684 Details : A security feature, which is to prevent users from being able
2685 to mount lustre on their desktop, run as root, and delete
2686 all of the files in the filesystem. The goal is accomplished by
2687 remapping user id (UID) and group id (GID) of the root user to
2688 a UID and GID specified by the system administartor via Lustre
2689 configuration management server (MGS). The functionality also
2690 allows to specify sets of clients for which the remapping does
2695 Description: Excessive recovery window
2696 Details : With AT enabled, the recovery window can be excessively long (6000+
2697 seconds). To address this problem, we no longer use
2698 OBD_RECOVERY_FACTOR when extending the recovery window (the connect
2699 timeout no longer depends on the service time, it is set to
2700 INITIAL_CONNECT_TIMEOUT now) and clients report the old service
2701 time via pb_service_time.
2705 Description: Watchdog triggered on MDS failover
2706 Details : enable OBD_CONNECT_MDT flag when connecting from the MDS so that
2707 the OSTs know that the MDS "UUID" can be reused for the same export
2708 from a different NID, so we do not need to wait for the export to be
2712 Frequency : rare, only if using MMP with Linux RAID
2714 Description: MMP doesn't work with Linux RAID
2715 Details : While using HA for Lustre servers with Linux RAID, it is possible
2716 that MMP will not detect multiple mounts. To make this work we
2717 need to unplug the device queue in RAID when the MMP block is being
2718 written. Also while reading the MMP block, we should read it from
2719 disk and not the cached one.
2721 Severity : enhancement
2723 Description: open file using fid
2724 Details : A file can be opened using just its fid, like
2725 <mntpt>/.lustre/fid/SEQ:OID:VER - this is needed for HSM and replication
2728 Frequency : Only in RHEL5 when mounting multiple ext3 filesystems
2731 Description: "kmem_cache_create: duplicate cache jbd_4k" error message
2732 Details : add proper locking for creation of jbd_4k slab cache
2736 Description: MMP check in ext3_remount() fails without displaying any error
2737 Details : When multiple mount protection fails during remount, proper error
2740 Severity : enhancement
2742 Description: Allow stripe size to be up to 4G-64k
2743 Details : Fix math logic to allow large stripe sizes.
2747 Description: add check for >8TB ldiskfs filesystems
2748 Details : ext3-based ldiskfs does not support greater than 8TB LUNs.
2749 Don't allow >8TB ldiskfs filesystems to be mounted without
2750 force_over_8tb mount option
2755 Descriptoin: OSS complains "too many blocks" and crashes
2756 Details : In filter_commitrw_write():
2757 1. lquota_chkquota();
2758 2. obdo_from_inode();
2759 3. lquota_pending_commit();
2760 "2." has changed uid and gid in this case, then caused
2761 lquota_chkquota() and lquota_pending_commit() to use
2762 different uid and gid. That is the root of the bug.
2766 Descriptoin: getstripe doesn't report stripe count = -1 sanely
2767 Details : Detect and print out the 'stripe count = -1' case properly.
2771 Description: Out or order replies might be lost on replay
2772 Details : In ptlrpc_retain_replayable_request if we cannot find retained
2773 request with tid smaller than one currently being added, add it
2774 to the start, not end of the list.
2776 --------------------------------------------------------------------------------
2778 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
2780 * Support for kernels:
2781 2.6.5-7.283 (SLES 9),
2782 2.6.9-55.EL (RHEL 4),
2783 2.6.16.46-0.14 (SLES 10),
2784 2.6.18.8 vanilla (kernel.org)
2785 * Client support for unpatched kernels:
2786 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
2787 2.6.16 - 2.6.22 vanilla (kernel.org)
2788 * Due to recently discovered recovery problems, we do not recommend
2789 using patchless RHEL 4 clients with this or any earlier release.
2790 * Recommended e2fsprogs version: 1.39.cfs8
2791 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
2792 * Starting with this release, the ldiskfs backing filesystem required
2793 by Lustre is now in its own package, lustre-ldiskfs. This package
2794 should be installed. It is versioned separately from Lustre and
2795 may be released separately in future.
2799 Description: block reactivating mgc import until all deactivates complete
2800 Details : Fix race when failing back MDT/MGS to itself (testing)
2803 Frequency : at statup only
2805 Description: mds_lov_synchronize race leads to various problems
2806 Details : simultaneous MDT->OST connections at startup can cause the
2807 sync to abort, leaving the OSC in a bad state.
2809 Severity : enhancement
2811 Description: add optional extra BUILD_VERSION info
2812 Details : add a new environment variable (namely LUSTRE_VERS) which allows
2813 to override the lustre version.
2816 Frequency : 2.6.18 servers only
2818 Description: ll_kern_mount() doesn't release the module reference
2819 Details : The ldiskfs module reference count never drops down to 0
2820 because ll_kern_mount() doesn't release the module reference.
2825 Description: server LBUG when using old ost_num_threads parameter
2826 Details : Accept the old ost_num_threads parameter but warn that it
2827 is deprecated, and fix an off-by-one error that caused an LBUG.
2832 Description: Transient SCSI error results in persistent IO issue
2833 Details : iobuf->dr_error is not reinitialized to 0 between two
2837 Frequency : sometimes when underlying device returns I/O errors
2839 Description: OSTs not going read-only during write failures
2840 Details : OSTs are not remounted read-only when the journal commit threads
2841 get I/O errors because fsfilt_ext3 calls journal_start/stop()
2842 instead of the ext3 wrappers.
2846 Description: poor connect scaling with increasing client count
2847 Details : Don't run filter_grant_sanity_check for more than 100 exports
2848 to improve scaling for large numbers of clients.
2851 Frequency : SLES10 only
2853 Description: sanity-quota.sh quotacheck failed: rc = -22
2854 Details : Quotas cannot be enabled on SLES10.
2857 Frequency : liblustre clients only
2859 Description: getdirentries does not give error when run on compute nodes
2860 Details : getdirentries does not fail when the size specified as an argument
2861 is too small to contain at least one entry
2863 Severity : enhancement
2865 Description: Add LNET router traceability for debug purposes
2866 Details : If a checksum failure occurs with a router as part of the
2867 IO path, the NID of the last router that forwarded the bulk data
2868 is printed so it can be identified.
2873 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
2874 Details : Due to a race condition, liblustre clients were occasionally
2875 evicted incorrectly.
2877 Severity : enhancement
2879 Description: lfs setstripe use optional parameters instead of postional
2882 Severity : enhancement
2884 Description: Nanosecond timestamp support for ldiskfs
2885 Details : The on-disk ldiskfs filesystem has added support for nanosecond
2886 resolution timestamps. There is not yet support for this at
2887 the Lustre filesystem level.
2890 Frequency : during server recovery
2892 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
2893 Details : request with rq_no_resend flag not awake l_wait_event if they get
2897 Frequency : nfs export on patchless client
2899 Description: connectathon hang when test nfs export over patchless client
2900 Details : Disconnected dentry cannot be found with lookup, so we do not need
2901 to unhash it or make it invalid
2904 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
2905 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
2906 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
2911 Description: open req refcounting wrong on reconnect
2912 Details : If reconnect happened between getting open reply from server and
2913 call to mdc_set_replay_data in ll_file_open, we will schedule
2914 replay for unreferenced request that we are about to free.
2915 Subsequent close will crash in variety of ways.
2916 Check that request is still eligible for replay in
2917 mdc_set_replay_data().
2922 Description: disable writes to filesystem when reading health_check file
2923 Details : the default for reading the health_check proc file has changed
2924 to NOT do a journal transaction and write to disk, because this
2925 can cause reads of the /proc file to hang and block HA state
2926 checking on a healthy but otherwise heavily loaded system. It
2927 is possible to return to the previous behaviour during configure
2928 with --enable-health-write.
2930 Severity : enhancement
2932 Description: 64-bit inode version
2933 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
2934 to the inode. This will be required for version-based recovery.
2939 Description: MDS fails to start if a duplicate client export is detected
2940 Details : in some rare cases it was possible for a client to connect to
2941 an MDS multiple times. Upon recovery the MDS would detect this
2942 and fail during startup. Handle this more gracefully.
2944 Severity : enhancement
2946 Description: Add -o localflock option to simulate old noflock
2948 Details : This will achieve local-only flock/fcntl locks
2954 Description: log_commit_thread vs filter_destroy race leads to crash
2955 Details : Take import reference before releasing llog record semaphore
2960 Description: Wrong request locking in request set processing
2961 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
2962 imp_delayed_list, in this place should be used imp_lock.
2965 Frequency : when reconnection
2967 Description: Grant Leak when osc reconnect to OST
2968 Details : When osc reconnect ost, OST(filter) should check whether it
2969 should grant more space to client by comparing fed_grant and
2970 cl_avail_grant, and return the granted space to client instead
2971 of "new granted" space, because client will call osc_init_grant
2972 to update the client grant space info.
2975 Frequency : when client reconnect to OST
2977 Description: Grant Leak when osc do resend and replay bulk write
2978 Details : When osc reconnect to OST, OST(filter)should clear grant info of
2979 bulk write request, because the grant info while be sync between
2980 OSC and OST when reconnect, and we should ignore the grant info
2981 these of resend/replay write req.
2986 Description: Grant space more than available left space sometimes.
2987 Details : When then OST is about to be full, if two bulk writing from
2988 different clients came to OST. Accord the avaliable space of the
2989 OST, the first req should be permitted, and the second one
2990 should be denied by ENOSPC. But if the seconde arrived before
2991 the first one is committed. The OST might wrongly permit second
2992 writing, which will cause grant space > available space.
2995 Frequency : when client is evicted
2997 Description: Grant might be wrongly erased when osc is evicted by OST
2998 Details : when the import is evicted by server, it will fork another
2999 thread ptlrpc_invalidate_import_thread to invalidate the
3000 import, where the grant will be set to 0. While the original
3001 thread will update the grant it got when connecting. So if
3002 the former happened latter, the grant will be wrongly errased
3003 because of this race.
3008 Description: Checking Stale with correct fid
3009 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
3010 to check whether it is stale, because sometimes, we want the
3011 enqueue happened anyway, and op_data.fid2 will not be initialized.
3013 Severity : enhancement
3015 Description: update patchless client
3016 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
3019 Frequency : only with 2.4 kernel
3021 Description: random memory corruption
3022 Details : size of struct ll_inode_info is to big for union inode.u and this
3023 can be cause of random memory corruption.
3028 Description: Memory leak in recovery
3029 Details : Lov_mds_md was not free in an error handler in mds_create_object.
3030 It should also check obd_fail before fsfilt_start, otherwise if
3031 fsfilt_start return -EROFS,(failover mds during mds recovery).
3032 then the req will return with repmsg->transno = 0 and rc = EROFS.
3033 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
3034 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
3035 be freed no matter whether fsfilt_commit success or not.
3038 Frequency : only with huge count clients
3040 Description: Prevents from taking the superblock lock in llap_from_page for
3042 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
3043 for llap_from_page call in ll_removepage prevents from taking the
3044 superblock lock for a soon died page.
3049 Description: Not check open intent error before release open handle
3050 Details : in some rare cases, the open intent error is not checked before
3051 release open handle, which may cause
3052 ASSERTION(open_req->rq_transno != 0), because it tries to release
3053 the failed open handle.
3058 Description: Set cat log bitmap only after create log success.
3059 Details : in some rare cases, the cat log bitmap is set too early. and it
3060 should be set only after create log success.
3064 Description: Accessing a block bevice can re-enable I/O when Lustre is
3065 tearing down a device.
3066 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
3071 Description: service threads may hog cpus when there are a lot of requests
3072 Details : Insert cond_resched to give other threads a chance to use some CPU
3077 Description: the cat log was not initialized in recovery
3078 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
3079 unlink log on mds will not be initialized until mds post
3080 recovery. And also in mds post recovery, the unlink log will
3081 initialization will be done asynchronausly, so there will be race
3082 between add unlink log and unlink log initialization.
3086 Description: brw_stats were being printed incorrectly
3087 Details : brw_stats were being printed as log2 but all of them were not
3088 recorded as log2. Also remove some code duplication arising from
3089 filter_tally_{read,write}.
3093 Frequency : rare, only in recovery.
3094 Description: ASSERTION(req->rq_type != LI_POISON) failed
3095 Details : imp_lock should be held while iterating over imp_sending_list for
3096 prevent destroy request after get timeout in ptlrpc_queue_wait.
3100 Description: replay-single.sh test 52 fails
3101 Details : A lock's skiplist need to be cleanup when it being unlinked
3102 from its resource list.
3106 Description: Short directio read returns full requested size rather than
3108 Details : Direct I/O operations should return actual amount of bytes
3109 transferred rather than requested size.
3111 Severity : enhancement
3113 Description: metadata RPC reduction (e.g. for rm performance)
3114 Details : decrease the amount of synchronous RPC between clients and servers
3115 by canceling conflicing lock before the operation on the client
3116 and packing thier handles into the main operation RPC to server.
3118 Severity : enhancement
3120 Description: Async OSC create to avoid the blocking unnecessarily.
3121 Details : If an OST has no remaining object, system will block on the
3122 creation when it needs to create a new object on this OST. Now,
3123 ways use pre-created objects when available, instead of blocking on
3124 an empty osc while others are not empty. If we must block, we
3125 block for the shortest possible period of time.
3129 Description: improve handling recoverable errors
3130 Details : if request processig with error which can be recoverable on server
3131 request should be resend, otherwise page released from cache and
3134 Severity : enhancement
3136 Description: refine locking for avoid write wrong info into lov_objid file
3137 Details : fix possible races with add new target and write/update data in
3140 --------------------------------------------------------------------------------
3142 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
3147 Frequency : on some architectures
3149 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
3150 Details : Uninitialized flags sometimes cause configuration commands to
3154 Frequency : patchless clients only
3156 Description: missing __iget() symbol export
3157 Details : The __iget() symbol export is missing. To avoid the need for
3158 this on patchless clients the deathrow inode reaper is turned
3159 off, and we depend on the VM to clean up old inodes. This
3160 dependency was during via the fix for bug 12181.
3162 --------------------------------------------------------------------------------
3164 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
3166 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
3167 INTEROPERATE with older versions automatically. In many cases a
3168 special upgrade step is needed. Please read the
3169 user documentation before upgrading any part of a live system.
3170 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
3171 version will not interoperate with 1.6 betas before beta5 (1.5.95).
3172 * WARNING: Lustre configuration and startup changes are required with
3173 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
3177 Severity : enhancement
3179 Description: MountConf
3180 Details : Lustre configuration is now managed via mkfs and mount
3181 commands instead of lmc and lconf. New obd types (MGS, MGC)
3182 are added for dynamic configuration management. See
3183 https://mail.clusterfs.com/wikis/lustre/MountConf for
3186 Severity : enhancement
3188 Description: dynamic OST addition
3189 Details : OSTs can now be added to a live filesystem
3191 Severity : enhancement
3193 Description: startup order invariance
3194 Details : MDTs and OSTs can be started in any order. Clients only
3195 require the MDT to complete startup.
3197 Severity : enhancement
3199 Description: parallel, asynchronous orphan cleanup
3200 Details : orphan cleanup is now performed in separate threads for each
3201 OST, allowing parallel non-blocking operation.
3203 Severity : enhancement
3205 Description: optimized stripe assignment
3206 Details : stripe assignments are now made based on ost space available,
3207 ost previous usage, and OSS previous usage, in order to try
3208 to optimize storage space and networking resources.
3210 Severity : enhancement
3212 Description: Permanently set tunables
3213 Details : All writable /proc/fs/lustre tunables can now be permanently
3214 set on a per-server basis, at mkfs time or on a live system.
3216 Severity : enhancement
3218 Description: Lustre message v2
3219 Details : Add lustre message format v2.
3221 Severity : enhancement
3223 Description: client OST exclusion list
3224 Details : Clients can be started with a list of OSTs that should be
3225 declared "inactive" for known non-responsive OSTs.
3229 Description: SPEC SFS validation failure on NFS v2 over lustre.
3230 Details : Changes the blocksize for regular files to be 2x RPC size,
3231 and not depend on stripe size.
3233 Severity : enhancement
3235 Description: Multiple MD RPCs in flight.
3236 Details : Further unserialise some read-only MDS RPCs - learn about intents.
3237 To avoid overly-overloading MDS, introduce a limit on number of
3238 MDS RPCs in flight for a single client and add /proc controls
3239 to adjust this limit.
3241 Severity : enhancement
3243 Description: client read/write statistics
3244 Details : Add client read/write call usage stats for performance
3245 analysis of user processes.
3246 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
3247 file access. extents_stats shows chunk size distribution.
3248 extents_stats_per_process show chunk size distribution per
3251 Severity : enhancement
3253 Description: mds statistics
3254 Details : Add detailed mds operations statistics in
3255 /proc/fs/lustre/mds/*/stats.
3259 Description: Failure of copying files with lustre special EAs.
3260 Details : Client side always return success for setxattr call for lustre
3261 special xattr (currently only "trusted.lov").
3266 Description: Refcount LNET uuids
3267 Details : The global LNET uuid list grew linearly with every startup;
3268 refcount repeated list entries instead of always adding to
3271 Severity : enhancement
3273 Description: Dynamic service threads
3274 Details : Within a small range, start extra service threads
3275 automatically when the request queue builds up.
3278 Frequency : mixed-endian client/server environments
3280 Description: mixed-endian crashes
3281 Details : The new msg_v2 system had some failures in mixed-endian
3284 Severity : enhancement
3286 Description: Easy OST removal
3287 Details : OSTs can be permanently deactivated with e.g. 'lctl
3288 conf_param lustre-OST0001.osc.active=0'
3290 Severity : enhancement
3292 Description: MGS proc entries
3293 Details : Added basic proc entries for the MGS showing what filesystems
3296 Severity : enhancement
3298 Description: provide MGS failover
3299 Details : Added config lock reacquisition after MGS server failover.
3301 Severity : enhancement
3303 Description: add Linux 2.4 support
3304 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
3308 Description: a large application tries to do I/O to the same resource and dies
3309 in the middle of it.
3310 Details : Check the req->rq_arrival time after the call to
3311 ost_brw_lock_get(), but before we do anything about
3312 processing it & sending the BULK transfer request. This
3313 should help move old stale pending locks off the queue as
3314 quickly as obd_timeout.
3317 Frequency : when an incorrect nid is specified during startup
3319 Description: ptlrpc connect to non-existant node causes kernel crash
3320 Details : LNET can't be re-entered from an event callback, which
3321 happened when we expire a message after the export has been
3322 cleaned up. Instead, hand the zombie cleanup off to another
3325 Severity : enhancement
3327 Description: plain/inodebits lock performance improvement
3328 Details : Grouping plain/inodebits in granted list by their request modes
3329 and bits policy, thus improving the performance of search through
3333 Frequency : only if OST filesystem is corrupted
3335 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3336 Details : for a short time RPCs with bulk IO are in the replay list,
3337 but replay of bulk IOs is unimplemented. If the OST filesystem
3338 is corrupted due to disk cache incoherency and then replay is
3339 started it is possible to trip an assertion. Avoid putting
3340 committed RPCs into the replay list at all to avoid this issue.
3343 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3345 Description: System hang on startup
3346 Details : This bug allowed the liblustre (e.g. catamount) client to
3347 return to the app before handling all startup RPCs. This
3348 could leave the node unresponsive to lustre network traffic
3349 and manifested as a server ptllnd timeout.
3351 Severity : enhancement
3353 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3354 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
3355 boolean to control whether to print peer debug info when a
3356 client's RPC times out.
3359 Frequency : only for kernels with patches from Lustre below 1.4.3
3361 Description: Remove old rdonly API
3362 Details : Remove old rdonly API which unused from at least lustre 1.4.3
3365 Frequency : only for devices with external journals
3367 Description: Set external device read-only also
3368 Details : During a commanded failover stop, we set the disk device
3369 read-only while the server shuts down. We now also set any
3370 external journal device read-only at the same time.
3373 Frequency : when upgrading from 1.4 while trying to change parameters
3375 Description: The wrong (new) MDC name was used when setting parameters for
3376 upgraded MDT's. Also allows changing of OSC (and MDC)
3377 parameters if --writeconf is specified at tunefs upgrade time.
3380 Frequency : when setting specific ost indicies
3382 Description: QOS code breaks on skipped indicies
3383 Details : Add checks for missing OST indicies in the QOS code, so OSTs
3384 created with --index need not be sequential.
3386 Severity : enhancement
3388 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
3389 Details : The uninit_groups feature works in conjunction with the kernel
3390 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
3391 up the pass1 processing of e2fsck. This is a read-only feature
3392 in ldiskfs2 only, so older kernels and current ldiskfs cannot
3393 mount filesystems that have had this feature enabled.
3395 Severity : enhancement
3397 Description: Improve multi-block allocation algorithm to avoid fragmentation
3398 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
3399 allocation locality and avoid filesystem fragmentation.
3401 ------------------------------------------------------------------------------
3403 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
3405 * Support for kernels:
3406 2.4.21-47.0.1.EL (RHEL 3)
3407 2.6.5-7.283 (SLES 9)
3408 2.6.9-42.0.10.EL (RHEL 4)
3409 2.6.12.6 vanilla (kernel.org)
3410 2.6.16.27-0.9 (SLES 10)
3411 * Recommended e2fsprogs version: 1.39.cfs5
3413 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
3417 Frequency : occasional, depends on client load and configuration
3418 Bugzilla : 12181, 12203
3419 Description: data loss for recently-modified files
3421 Details : In some cases it is possible that recently written or created
3422 files may not be written to disk in a timely manner (this should
3423 normally be within 30s unless client IO load is very high).
3424 The problem appears as zero-length files or files that are a
3425 multiple of 1MB in size after a client crash or client eviction
3426 that are missing data at the end of the file.
3428 This problem is more likely to be hit on clients where files are
3429 repeatedly created and unlinked in the same directory, clients
3430 have a large amount of RAM, have many CPUs, the filesystem has
3431 many OSTs, the clients are rebooted frequently, and/or the files
3432 are not accessed by other nodes after being written.
3434 The presence of the problem can be detected by looking at
3435 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
3436 smaller than the second (nr_unused) then dirty files will not
3437 be flushed automatically to disk. "sync; sleep 10" should be
3438 run several times on the node before unmounting it to update
3439 Lustre (this is also safe to run on nodes without this problem).
3441 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
3442 that can cause this same problem, so customers using that kernel
3443 also need to update the kernel in addition to Lustre. In order
3444 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
3446 It is normal that files written just before a client crash (less
3447 than 30s) may not yet have been flushed to disk, even for local
3451 Frequency : frequent on thin XT3 nodes
3453 Description: UUID collision on thin XT3 Linux nodes
3454 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
3455 randomly, since we relied on an insufficiently-seeded PRNG.
3460 Description: OSS hangs after "All ost request buffers busy"
3461 Details : A deadlock between quota and journal operations caused OSS
3462 hangs after printing "All ost request buffers busy."
3465 Frequency : always on liblustre builds
3467 Description: Cleanup compiler warnings on liblustre
3470 Frequency : always on liblustre builds on XT3
3472 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
3476 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
3477 > 32000 subdirectories
3478 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
3479 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
3480 subdirectory count crosses 32000. This will aid e2fsck to
3481 correctly handle more than 32000 subdirectories.
3484 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
3486 Description: System hang on startup
3487 Details : This bug allowed the liblustre (e.g. catamount) client to
3488 return to the app before handling all startup RPCs. This
3489 could leave the node unresponsive to lustre network traffic
3490 and manifested as a server ptllnd timeout.
3492 Severity : enhancement
3494 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
3495 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
3496 boolean to control whether to print peer debug info when a
3497 client's RPC times out.
3502 Description: make O_SYNC working on 2.6 kernels
3503 Details : 2.6 kernels use different method for mark pages for write,
3504 so need add a code to lustre for O_SYNC work.
3509 Description: Failure to close file and release space on NFS
3510 Details : Put inode details into lock acquired in ll_intent_file_open.
3511 Use mdc_intent_lock in ll_intent_open to properly
3512 detect all kind of errors unhandled by mdc_enqueue.
3517 Description: proc file read during shutdown sometimes raced obd removal,
3519 Details : Add lock to prevent obd access after proc file removal.
3522 Frequency : Only for files larger than 4GB on 32-bit clients.
3524 Description: improperly doing page alignment of locks
3525 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
3526 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
3531 Description: RPCs being resent when they shouldn't be
3532 Details : Some RPCs that should not be resent are being resent. This
3533 can cause inconsistencies in the RPC state machine. Do not
3534 resend such requests.
3537 Frequency : rare, only with NFS export
3539 Description: Crash on NFS re-export node
3540 Details : under very unusual load conditions an assertion is hit in
3541 ll_intent_file_open()
3544 Frequency : only if OST filesystem is corrupted
3546 Description: client incorrectly hits assertion in ptlrpc_replay_req()
3547 Details : for a short time RPCs with bulk IO are in the replay list,
3548 but replay of bulk IOs is unimplemented. If the OST filesystem
3549 is corrupted due to disk cache incoherency and then replay is
3550 started it is possible to trip an assertion. Avoid putting
3551 committed RPCs into the replay list at all to avoid this issue.
git://git.whamcloud.com / fs / lustre-release.git / blob