4 2.6.9-55.0.6.EL (RHEL 4),
5 2.6.16.46-0.14 (SLES 10),
6 2.6.18-8.1.10.EL5 (RHEL 5).
7 2.6.18.8 vanilla (kernel.org)
8 * Client support for unpatched kernels:
9 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
10 2.6.9-42.0.10.EL (RHEL 4),
11 2.6.16 - 2.6.21 vanilla (kernel.org)
12 * Recommended e2fsprogs version: 1.40.2-cfs1
13 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
15 Severity : enhancement
17 Description: self-adjustable client's lru lists
18 Details : use adaptive algorithm for managing client cached locks lru
19 lists according to current server load, other client's work
20 pattern, memory activities, etc. Both, server and client
21 side namespaces provide number of proc tunables for controlling
24 Severity : enhancement
26 Description: light-weight GSS support
27 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
28 and reduce performance overhead.
30 Severity : enhancement
32 Description: Linux keyring support
33 Details : Support using service of Linux keyring for Lustre GSS internal
34 context refresh/cache mechanism.
38 Description: Fix errors in lfs documentation
39 Details : Fixes man pages
43 Description: don't use GFP_* in generic Lustre code.
44 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
48 Description: obdclass is limited by single OBD_ALLOC(idarray)
49 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
53 Description: warnings with build patchless client with vanila 2.6.19 and up
54 Details : change old ctl_table style and replace ctl_table/ctl_table_header
55 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
59 Frequency : Only for SLES
60 Description: sanity_quota fail test_1
61 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
62 file, which makes TSTID[2] inunique.
66 Frequency : Only for SLES9
67 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
68 Details : Update target/ChangeLog/which_patch .
72 Frequency : Only for test_10 in sanity-quota.sh
73 Description: a bug in quota test code
74 Details : checking a test flag in a wrong place
78 Frequency : Only for test_13 in sanity-quota.sh
79 Description: a bug in quota test script
80 Details : shouldn't check overfull allocated quota
84 Description: jbd statistics
85 Details : Port older jbd statistics patch for sles10
87 Severity : enhancement
89 Description: Add printing inode info into message about error in writepage.
94 Description: reply_lock_interpret crash due to race with it and lock cancel.
95 Details : Do not replay locks that are being cancelled. Do not reference
96 locks by their address during replay, just by their handle.
100 Frequency : When flocks are used.
101 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
102 Details : Flock locks might destroy just granted lock if it could be merged
103 with another existing flock, this is done in completion handler,
104 so teach ldlm_cli_enquque_fini that this is a valid case for
110 Description: Oops in read and write path when failing to allocate lock.
111 Details : Check if lock allocation failed and return error back.
115 Description: lstripe command fails for valid OST index
116 Details : The stripe offset is compared to lov->desc.ld_tgt_count
117 instead of lov->desc.ld_active_tgt_count.
121 Description: sanity.sh failed test 103
122 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
127 Description: df doesn't work properly if diskfs blocksize != 4K
128 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
132 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
133 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
137 Description: obd_health_check_timeout too short
138 Details : set obd_health_check_timeout as 1.5x of obd_timeout
142 Description: llapi_file_create() does not allow some changes
143 Details : add llapi_file_open() that allows specifying the mode and
144 open flags, and also returns an open file handle.
148 Description: merge and cleanup kernel patches.
149 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
153 Description: Add journal checksum support.(Kernel part)
154 Details : The journal checksum feature adds two new flags i.e
155 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
156 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
157 indicates that the commit block contains the checksum for
158 the blocks described by the descriptor blocks. Now commit
159 record can be sent to disk without waiting for descriptor
160 blocks to be written to disk. This behavior is controlled
161 using JBD2_FEATURE_ASYNC_COMMIT flag.
165 Description: OSS needs mutliple precreate threads
166 Details : Add ability to start more than one create thread per OSS.
170 Description: Sanity.sh test_65k failed: setstripe should have succeeded
171 Details : execute lfs setstripe on client
175 Description: mds_obd_create error creating tmp object
176 Details : When the user sets quota on root, llog will be affected and can't
177 create files and write files.
180 Frequency : Always on ia64 patchless client, and possibly others.
182 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
183 Details : This allows the patchless client to be loaded on architectures
188 Description: RedHat Update kernel for RHEL5
189 Details : Add the kernel config file for RHEL5.
193 Description: RedHat Update kernel for RHEL5
194 Details : Modify the kernel config file more closer RHEL5.
198 Description: Build failure against Centos5 (RHEL5)
199 Details : Define PAGE_SIZE when it isn't present.
203 Description: test_7 on sanity-quota.sh can't be used on separate machines
204 Details : add facet to handle it
208 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
209 Details : with NFS, the anon dentry's parent was set to itself in
210 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
211 corresponding dentry other than use rec->ur_name.
213 Severity : enhancement
215 Description: lfs setstripe enhancement
216 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
220 Description: testing performance impact of enabling checksumming
221 Details : enable checksum by default, allow --disable-checksum
222 configure option and "-o nochecksum" mount option
226 Description: lustre support for RHEL5
227 Details : Add support for RHEL5.
231 Description: Client eviction due to failover config
232 Details : after a connection loss, the lustre client should attempt to
233 reconnect to the last active server first before trying the
234 other potential connections.
238 Description: when mds and osts use different quota unit(32bit and 64bit),
239 quota will be released repeatly.
240 Details : void sending multiple quota reqs to mds, which will keep the
241 status between the reqs.
245 Description: osts not allocated evenly to files
246 Details : change the condition to increase offset_idx
249 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
251 Description: Data corruption for OSTs that are formatted larger than 2TB
253 Details : When generating the bio request for lustre file writes the
254 sector number would overflow a temporary variable before being
255 used for the IO. The data reads correctly from Lustre (which
256 will overflow in a similar manner) but other file data or
257 filesystem metadata may be corrupted in some cases.
261 Description: Tune the kernel for good SCSI performance.
262 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
263 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
268 Description: rewrite ext2-derived code in obdclass/uuid.c
269 Details : rewrite inherited code (uuid parsing code from ext2 utils)
270 from scratch preserving functionality.
274 Description: "lfs find -obd UUID" prints directories
275 Details : "lfs find -obd UUID" will return all directory names instead
276 of just file names. It is incorrect because the directories
277 do not reside on the OSTs.
281 Description: use i_size_read and i_size_write in 2.6 port
282 Details : replace inode->i_size access with i_size_read/write()
285 Frequency : when removing large files
287 Description: scheduling issue during removal of large Lustre files
288 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
289 It causes scheduling issues when removing large files (17TB in the
293 Frequency : only with liblustre clients on XT3
295 Description: evictions taking too long
296 Details : allow llrd to evict clients directly on OSTs
299 Frequency : only on ppc
301 Description: /proc/fs/lustre/devices broken on ppc
302 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
303 We should make sure the type of 'index' is loff_t and then cast
304 explicitly as needed below. Do not assign an explicitly cast
308 Frequency : only for rhel5
310 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
311 Details : Modify the target file & which_kernel.
313 Severity : enhancement
315 Description: omit set fsid for export NFS
316 Details : fix set/restore device id for avoid EMFILE error and mark lustre fs
317 as FS_REQUIRES_DEV for avoid problems with generate fsid.
321 Frequency : Always, for kernels after 2.6.16
322 Description: Fix warning idr_remove called for id=.. which is not
324 Details : Last kernels save old s_dev before kill super and not allow
325 to restore from callback - restore it before call kill_anon_super.
329 Description: buffer overruns could theoretically occur
330 Details : llapi_semantic_traverse() modifies the "path" argument by
331 appending values to the end of the origin string, and a
332 overrun may occur. Adding buffer overrun check in liblustreapi.
336 Description: client sometimes tried revalidate root dentry.
337 Details : not revalidate dentry if it root dentry.
341 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
342 Details : Modify vm-tunables-rhel4.patch.
346 Description: Kernel config for 2.6.18-vanilla.
347 Details : Modify targets/2.6-vanilla.target.in.
348 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
349 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
350 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
351 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
355 Description: improve handling recoverable errors
356 Details : if request processig with error which can be recoverable on server
357 request should be resend, otherwise page released from cache and
360 --------------------------------------------------------------------------------
362 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
364 * Support for kernels:
365 2.6.5-7.283 (SLES 9),
366 2.6.9-55.EL (RHEL 4),
367 2.6.16.46-0.14 (SLES 10),
368 2.6.18.8 vanilla (kernel.org)
369 * Client support for unpatched kernels:
370 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
371 2.6.16 - 2.6.22 vanilla (kernel.org)
372 * Due to recently discovered recovery problems, we do not recommend
373 using patchless RHEL 4 clients with this or any earlier release.
374 * Recommended e2fsprogs version: 1.39.cfs8
375 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
376 * Starting with this release, the ldiskfs backing filesystem required
377 by Lustre is now in its own package, lustre-ldiskfs. This package
378 should be installed. It is versioned separately from Lustre and
379 may be released separately in future.
383 Description: block reactivating mgc import until all deactivates complete
384 Details : Fix race when failing back MDT/MGS to itself (testing)
386 Severity : enhancement
388 Description: add optional extra BUILD_VERSION info
389 Details : add a new environment variable (namely LUSTRE_VERS) which allows
390 to override the lustre version.
393 Frequency : 2.6.18 servers only
395 Description: ll_kern_mount() doesn't release the module reference
396 Details : The ldiskfs module reference count never drops down to 0
397 because ll_kern_mount() doesn't release the module reference.
402 Description: server LBUG when using old ost_num_threads parameter
403 Details : Accept the old ost_num_threads parameter but warn that it
404 is deprecated, and fix an off-by-one error that caused an LBUG.
409 Description: Transient SCSI error results in persistent IO issue
410 Details : iobuf->dr_error is not reinitialized to 0 between two
414 Frequency : sometimes when underlying device returns I/O errors
416 Description: OSTs not going read-only during write failures
417 Details : OSTs are not remounted read-only when the journal commit threads
418 get I/O errors because fsfilt_ext3 calls journal_start/stop()
419 instead of the ext3 wrappers.
423 Description: poor connect scaling with increasing client count
424 Details : Don't run filter_grant_sanity_check for more than 100 exports
425 to improve scaling for large numbers of clients.
428 Frequency : SLES10 only
430 Description: sanity-quota.sh quotacheck failed: rc = -22
431 Details : Quotas cannot be enabled on SLES10.
434 Frequency : liblustre clients only
436 Description: getdirentries does not give error when run on compute nodes
437 Details : getdirentries does not fail when the size specified as an argument
438 is too small to contain at least one entry
440 Severity : enhancement
442 Description: Add LNET router traceability for debug purposes
443 Details : If a checksum failure occurs with a router as part of the
444 IO path, the NID of the last router that forwarded the bulk data
445 is printed so it can be identified.
450 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
451 Details : Due to a race condition, liblustre clients were occasionally
454 Severity : enhancement
456 Description: lfs setstripe use optional parameters instead of postional
459 Severity : enhancement
461 Description: Nanosecond timestamp support for ldiskfs
462 Details : The on-disk ldiskfs filesystem has added support for nanosecond
463 resolution timestamps. There is not yet support for this at
464 the Lustre filesystem level.
467 Frequency : during server recovery
469 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
470 Details : request with rq_no_resend flag not awake l_wait_event if they get a
474 Frequency : nfs export on patchless client
476 Description: connectathon hang when test nfs export over patchless client
477 Details : Disconnected dentry cannot be found with lookup, so we do not need
478 to unhash it or make it invalid
481 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
482 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
483 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
488 Description: open req refcounting wrong on reconnect
489 Details : If reconnect happened between getting open reply from server and
490 call to mdc_set_replay_data in ll_file_open, we will schedule
491 replay for unreferenced request that we are about to free.
492 Subsequent close will crash in variety of ways.
493 Check that request is still eligible for replay in
494 mdc_set_replay_data().
499 Description: disable writes to filesystem when reading health_check file
500 Details : the default for reading the health_check proc file has changed
501 to NOT do a journal transaction and write to disk, because this
502 can cause reads of the /proc file to hang and block HA state
503 checking on a healthy but otherwise heavily loaded system. It
504 is possible to return to the previous behaviour during configure
505 with --enable-health-write.
507 Severity : enhancement
509 Description: 64-bit inode version
510 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
511 to the inode. This will be required for version-based recovery.
516 Description: MDS fails to start if a duplicate client export is detected
517 Details : in some rare cases it was possible for a client to connect to
518 an MDS multiple times. Upon recovery the MDS would detect this
519 and fail during startup. Handle this more gracefully.
521 Severity : enhancement
523 Description: Add -o localflock option to simulate old noflock
525 Details : This will achieve local-only flock/fcntl locks
531 Description: log_commit_thread vs filter_destroy race leads to crash
532 Details : Take import reference before releasing llog record semaphore
537 Description: Wrong request locking in request set processing
538 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
539 imp_delayed_list, in this place should be used imp_lock.
542 Frequency : when reconnection
544 Description: Grant Leak when osc reconnect to OST
545 Details : When osc reconnect ost, OST(filter) should check whether it
546 should grant more space to client by comparing fed_grant and
547 cl_avail_grant, and return the granted space to client instead
548 of "new granted" space, because client will call osc_init_grant
549 to update the client grant space info.
552 Frequency : when client reconnect to OST
554 Description: Grant Leak when osc do resend and replay bulk write
555 Details : When osc reconnect to OST, OST(filter)should clear grant info of
556 bulk write request, because the grant info while be sync between
557 OSC and OST when reconnect, and we should ignore the grant info
558 these of resend/replay write req.
563 Description: Grant space more than avaiable left space sometimes.
564 Details : When then OST is about to be full, if two bulk writing from
565 different clients came to OST. Accord the avaliable space of the
566 OST, the first req should be permitted, and the second one
567 should be denied by ENOSPC. But if the seconde arrived before
568 the first one is commited. The OST might wrongly permit second
569 writing, which will cause grant space > avaiable space.
572 Frequency : when client is evicted
574 Description: Grant might be wrongly erased when osc is evicted by OST
575 Details : when the import is evicted by server, it will fork another
576 thread ptlrpc_invalidate_import_thread to invalidate the
577 import, where the grant will be set to 0. While the original
578 thread will update the grant it got when connecting. So if
579 the former happened latter, the grant will be wrongly errased
580 because of this race.
585 Description: Checking Stale with correct fid
586 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
587 to check whether it is stale, because sometimes, we want the
588 enqueue happened anyway, and op_data.fid2 will not be initialized.
590 Severity : enhancement
592 Description: update patchless client
593 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
596 Frequency : only with 2.4 kernel
598 Description: random memory corruption
599 Details : size of struct ll_inode_info is to big for union inode.u and this
600 can be cause of random memory corruption.
605 Description: Memory leak in recovery
606 Details : Lov_mds_md was not free in an error handler in mds_create_object.
607 It should also check obd_fail before fsfilt_start, otherwise if
608 fsfilt_start return -EROFS,(failover mds during mds recovery).
609 then the req will return with repmsg->transno = 0 and rc = EROFS.
610 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
611 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
612 be freed no matter whether fsfilt_commit success or not.
615 Frequency : only with huge count clients
617 Description: Prevents from taking the superblock lock in llap_from_page for
619 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
620 for llap_from_page call in ll_removepage prevents from taking the
621 superblock lock for a soon died page.
626 Description: Not check open intent error before release open handle
627 Details : in some rare cases, the open intent error is not checked before
628 release open handle, which may cause
629 ASSERTION(open_req->rq_transno != 0), because it tries to release
630 the failed open handle.
635 Description: Set cat log bitmap only after create log success.
636 Details : in some rare cases, the cat log bitmap is set too early. and it
637 should be set only after create log success.
641 Description: Accessing a block bevice can re-enable I/O when Lustre is
642 tearing down a device.
643 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
648 Description: service threads may hog cpus when there are a lot of requests
650 Details : Insert cond_resched to give other threads a chance to use some of
656 Description: the cat log was not initialized in recovery
657 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
658 unlink log on mds will not be initialized until mds post
659 recovery. And also in mds post recovery, the unlink log will
660 initialization will be done asynchronausly, so there will be race
661 between add unlink log and unlink log initialization.
665 Description: brw_stats were being printed incorrectly
666 Details : brw_stats were being printed as log2 but all of them were not
667 recorded as log2. Also remove some code duplication arising from
668 filter_tally_{read,write}.
672 Frequency : rare, only in recovery.
673 Description: ASSERTION(req->rq_type != LI_POISON) failed
674 Details : imp_lock should be held while iterating over imp_sending_list for
675 prevent destroy request after get timeout in ptlrpc_queue_wait.
679 Description: replay-single.sh test 52 fails
680 Details : A lock's skiplist need to be cleanup when it being unlinked
681 from its resource list.
685 Description: Short directio read returns full requested size rather than
687 Details : Direct I/O operations should return actual amount of bytes
688 transferred rather than requested size.
690 Severity : enhancement
692 Description: metadata RPC reduction (e.g. for rm performance)
693 Details : decrease the amount of synchronous RPC between clients and servers
694 by canceling conflicing lock before the operation on the client side
695 and packing thier handles into the main operation RPC to server.
697 Severity : enhancement
699 Description: Async OSC create to avoid the blocking unnecessarily.
700 Details : If a OST has no remain object, system will block on the creating
701 when need to create a new object on this OST. Now, ways use
702 pre-created objects when available, instead of blocking on an
703 empty osc while others are not empty. If we must block, we block
704 for the shortest possible period of time.
708 Description: improve handling recoverable errors
709 Details : if request processig with error which can be recoverable on server
710 request should be resend, otherwise page released from cache and
713 Severity : enhancement
715 Description: refine locking for avoid write wrong info into lov_objid file
716 Details : fix possible races with add new target and write/update data in
719 --------------------------------------------------------------------------------
721 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
726 Frequency : on some architectures
728 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
729 Details : Uninitialized flags sometimes cause configuration commands to
733 Frequency : patchless clients only
735 Description: missing __iget() symbol export
736 Details : The __iget() symbol export is missing. To avoid the need for
737 this on patchless clients the deathrow inode reaper is turned
738 off, and we depend on the VM to clean up old inodes. This
739 dependency was during via the fix for bug 12181.
741 --------------------------------------------------------------------------------
743 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
745 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
746 INTEROPERATE with older versions automatically. In many cases a
747 special upgrade step is needed. Please read the
748 user documentation before upgrading any part of a live system.
749 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
750 version will not interoperate with 1.6 betas before beta5 (1.5.95).
751 * WARNING: Lustre configuration and startup changes are required with
752 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
758 Severity : enhancement
760 Description: MountConf
761 Details : Lustre configuration is now managed via mkfs and mount
762 commands instead of lmc and lconf. New obd types (MGS, MGC)
763 are added for dynamic configuration management. See
764 https://mail.clusterfs.com/wikis/lustre/MountConf for
767 Severity : enhancement
769 Description: dynamic OST addition
770 Details : OSTs can now be added to a live filesystem
772 Severity : enhancement
774 Description: startup order invariance
775 Details : MDTs and OSTs can be started in any order. Clients only
776 require the MDT to complete startup.
778 Severity : enhancement
780 Description: parallel, asynchronous orphan cleanup
781 Details : orphan cleanup is now performed in separate threads for each
782 OST, allowing parallel non-blocking operation.
784 Severity : enhancement
786 Description: optimized stripe assignment
787 Details : stripe assignments are now made based on ost space available,
788 ost previous usage, and OSS previous usage, in order to try
789 to optimize storage space and networking resources.
791 Severity : enhancement
793 Description: Permanently set tunables
794 Details : All writable /proc/fs/lustre tunables can now be permanently
795 set on a per-server basis, at mkfs time or on a live
798 Severity : enhancement
800 Description: Lustre message v2
801 Details : Add lustre message format v2.
803 Severity : enhancement
805 Description: client OST exclusion list
806 Details : Clients can be started with a list of OSTs that should be
807 declared "inactive" for known non-responsive OSTs.
811 Description: SPEC SFS validation failure on NFS v2 over lustre.
812 Details : Changes the blocksize for regular files to be 2x RPC size,
813 and not depend on stripe size.
815 Severity : enhancement
817 Description: Multiple MD RPCs in flight.
818 Details : Further unserialise some read-only MDS RPCs - learn about intents.
819 To avoid overly-overloading MDS, introduce a limit on number of
820 MDS RPCs in flight for a single client and add /proc controls
821 to adjust this limit.
823 Severity : enhancement
825 Description: client read/write statistics
826 Details : Add client read/write call usage stats for performance
827 analysis of user processes.
828 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
829 file access. extents_stats shows chunk size distribution.
830 extents_stats_per_process show chunk size distribution per
833 Severity : enhancement
835 Description: mds statistics
836 Details : Add detailed mds operations statistics in
837 /proc/fs/lustre/mds/*/stats.
841 Description: Failure of copying files with lustre special EAs.
842 Details : Client side always return success for setxattr call for lustre
843 special xattr (currently only "trusted.lov").
848 Description: Refcount LNET uuids
849 Details : The global LNET uuid list grew linearly with every startup;
850 refcount repeated list entries instead of always adding to
853 Severity : enhancement
855 Description: Dynamic service threads
856 Details : Within a small range, start extra service threads
857 automatically when the request queue builds up.
860 Frequency : mixed-endian client/server environments
862 Description: mixed-endian crashes
863 Details : The new msg_v2 system had some failures in mixed-endian
866 Severity : enhancement
868 Description: Easy OST removal
869 Details : OSTs can be permanently deactivated with e.g. 'lctl
870 conf_param lustre-OST0001.osc.active=0'
872 Severity : enhancement
874 Description: MGS proc entries
875 Details : Added basic proc entries for the MGS showing what filesystems
878 Severity : enhancement
880 Description: provide MGS failover
881 Details : Added config lock reacquisition after MGS server failover.
883 Severity : enhancement
885 Description: add Linux 2.4 support
886 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
890 Description: a large application tries to do I/O to the same resource and dies
892 Details : Check the req->rq_arrival time after the call to
893 ost_brw_lock_get(), but before we do anything about
894 processing it & sending the BULK transfer request. This
895 should help move old stale pending locks off the queue as
896 quickly as obd_timeout.
899 Frequency : when an incorrect nid is specified during startup
901 Description: ptlrpc connect to non-existant node causes kernel crash
902 Details : LNET can't be re-entered from an event callback, which
903 happened when we expire a message after the export has been
904 cleaned up. Instead, hand the zombie cleanup off to another
907 Severity : enhancement
909 Description: plain/inodebits lock performance improvement
910 Details : Grouping plain/inodebits in granted list by their request modes
911 and bits policy, thus improving the performance of search through
915 Frequency : only if OST filesystem is corrupted
917 Description: client incorrectly hits assertion in ptlrpc_replay_req()
918 Details : for a short time RPCs with bulk IO are in the replay list,
919 but replay of bulk IOs is unimplemented. If the OST filesystem
920 is corrupted due to disk cache incoherency and then replay is
921 started it is possible to trip an assertion. Avoid putting
922 committed RPCs into the replay list at all to avoid this issue.
925 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
927 Description: System hang on startup
928 Details : This bug allowed the liblustre (e.g. catamount) client to
929 return to the app before handling all startup RPCs. This
930 could leave the node unresponsive to lustre network traffic
931 and manifested as a server ptllnd timeout.
933 Severity : enhancement
935 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
936 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
937 boolean to control whether to print peer debug info when a
938 client's RPC times out.
941 Frequency : only for kernels with patches from Lustre below 1.4.3
943 Description: Remove old rdonly API
944 Details : Remove old rdonly API which unused from at least lustre 1.4.3
947 Frequency : only for devices with external journals
949 Description: Set external device read-only also
950 Details : During a commanded failover stop, we set the disk device
951 read-only while the server shuts down. We now also set any
952 external journal device read-only at the same time.
955 Frequency : when upgrading from 1.4 while trying to change parameters
957 Description: The wrong (new) MDC name was used when setting parameters for
958 upgraded MDT's. Also allows changing of OSC (and MDC)
959 parameters if --writeconf is specified at tunefs upgrade time.
962 Frequency : when setting specific ost indicies
964 Description: QOS code breaks on skipped indicies
965 Details : Add checks for missing OST indicies in the QOS code, so OSTs
966 created with --index need not be sequential.
968 Severity : enhancement
970 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
971 Details : The uninit_groups feature works in conjunction with the kernel
972 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
973 up the pass1 processing of e2fsck. This is a read-only feature
974 in ldiskfs2 only, so older kernels and current ldiskfs cannot
975 mount filesystems that have had this feature enabled.
977 Severity : enhancement
979 Description: Improve multi-block allocation algorithm to avoid fragmentation
980 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
981 allocation locality and avoid filesystem fragmentation.
983 ------------------------------------------------------------------------------
985 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
987 * Support for kernels:
988 2.4.21-47.0.1.EL (RHEL 3)
990 2.6.9-42.0.10.EL (RHEL 4)
991 2.6.12.6 vanilla (kernel.org)
992 2.6.16.27-0.9 (SLES 10)
993 * Recommended e2fsprogs version: 1.39.cfs5
995 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
999 Frequency : occasional, depends on client load and configuration
1000 Bugzilla : 12181, 12203
1001 Description: data loss for recently-modified files
1003 Details : In some cases it is possible that recently written or created
1004 files may not be written to disk in a timely manner (this should
1005 normally be within 30s unless client IO load is very high).
1006 The problem appears as zero-length files or files that are a
1007 multiple of 1MB in size after a client crash or client eviction
1008 that are missing data at the end of the file.
1010 This problem is more likely to be hit on clients where files are
1011 repeatedly created and unlinked in the same directory, clients
1012 have a large amount of RAM, have many CPUs, the filesystem has
1013 many OSTs, the clients are rebooted frequently, and/or the files
1014 are not accessed by other nodes after being written.
1016 The presence of the problem can be detected by looking at
1017 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
1018 smaller than the second (nr_unused) then dirty files will not
1019 be flushed automatically to disk. "sync; sleep 10" should be
1020 run several times on the node before unmounting it to update
1021 Lustre (this is also safe to run on nodes without this problem).
1023 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
1024 that can cause this same problem, so customers using that kernel
1025 also need to update the kernel in addition to Lustre. In order
1026 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
1028 It is normal that files written just before a client crash (less
1029 than 30s) may not yet have been flushed to disk, even for local
1033 Frequency : frequent on thin XT3 nodes
1035 Description: UUID collision on thin XT3 Linux nodes
1036 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
1037 randomly, since we relied on an insufficiently-seeded PRNG.
1042 Description: OSS hangs after "All ost request buffers busy"
1043 Details : A deadlock between quota and journal operations caused OSS
1044 hangs after printing "All ost request buffers busy."
1047 Frequency : always on liblustre builds
1049 Description: Cleanup compiler warnings on liblustre
1052 Frequency : always on liblustre builds on XT3
1054 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
1058 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
1059 > 32000 subdirectories
1060 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
1061 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
1062 subdirectory count crosses 32000. This will aid e2fsck to
1063 correctly handle more than 32000 subdirectories.
1066 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
1068 Description: System hang on startup
1069 Details : This bug allowed the liblustre (e.g. catamount) client to
1070 return to the app before handling all startup RPCs. This
1071 could leave the node unresponsive to lustre network traffic
1072 and manifested as a server ptllnd timeout.
1074 Severity : enhancement
1076 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
1077 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
1078 boolean to control whether to print peer debug info when a
1079 client's RPC times out.
1084 Description: make O_SYNC working on 2.6 kernels
1085 Details : 2.6 kernels use different method for mark pages for write,
1086 so need add a code to lustre for O_SYNC work.
1091 Description: Failure to close file and release space on NFS
1092 Details : Put inode details into lock acquired in ll_intent_file_open.
1093 Use mdc_intent_lock in ll_intent_open to properly
1094 detect all kind of errors unhandled by mdc_enqueue.
1099 Description: proc file read during shutdown sometimes raced obd removal,
1101 Details : Add lock to prevent obd access after proc file removal.
1104 Frequency : Only for files larger than 4GB on 32-bit clients.
1106 Description: improperly doing page alignment of locks
1107 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
1108 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
1113 Description: RPCs being resent when they shouldn't be
1114 Details : Some RPCs that should not be resent are being resent. This
1115 can cause inconsistencies in the RPC state machine. Do not
1116 resend such requests.
1119 Frequency : rare, only with NFS export
1121 Description: Crash on NFS re-export node
1122 Details : under very unusual load conditions an assertion is hit in
1123 ll_intent_file_open()
1126 Frequency : only if OST filesystem is corrupted
1128 Description: client incorrectly hits assertion in ptlrpc_replay_req()
1129 Details : for a short time RPCs with bulk IO are in the replay list,
1130 but replay of bulk IOs is unimplemented. If the OST filesystem
1131 is corrupted due to disk cache incoherency and then replay is
1132 started it is possible to trip an assertion. Avoid putting
1133 committed RPCs into the replay list at all to avoid this issue.
1138 Description: large O_DIRECT requests fail under memory pressure/fragmentation
1139 Details : Large single O_DIRECT read and write calls can fail to allocate
1140 a sufficiently large buffer to process the request. In case of
1141 allocation failure the allocation is retried with a smaller
1142 buffer and broken into smaller requests.
1144 Severity : enhancement
1146 Description: Add -o localflock option to simulate old noflock behaviour.
1147 Details : This will achieve local-only flock/fcntl locks coherentness.
1152 Description: versioning check is incomplete
1153 Details : Checking the version difference of client vs. server, report
1154 error if the gap is too big.
1159 Description: add support PG_writeback bit
1160 Details : add support for PG_writeback bit for Lustre, for more carefull
1161 work with page cache in 2.6 kernel. This also fix some deadlocks
1162 and remove hack for work O_SYNC with 2.6 kernel.
1164 Severity : enhancement
1166 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
1167 Details : The uninit_groups feature works in conjunction with the kernel
1168 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
1169 up the pass1 processing of e2fsck. This is a read-only feature
1170 in ldiskfs2 only, so older kernels and current ldiskfs cannot
1171 mount filesystems that have had this feature enabled.
1173 Severity : enhancement
1175 Description: Improve multi-block allocation algorithm to avoid fragmentation
1176 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1177 allocation locality and avoid filesystem fragmentation.
1179 ------------------------------------------------------------------------------
1181 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
1183 * Support for kernels:
1184 2.6.9-42.0.3.EL (RHEL 4)
1185 2.6.5-7.276 (SLES 9)
1186 2.4.21-47.0.1.EL (RHEL 3)
1187 2.6.12.6 vanilla (kernel.org)
1188 2.6.16.21-0.8 (SLES10)
1189 * Recommended e2fsprogs version: 1.39.cfs2-0
1191 * The backwards-compatible /proc/sys/portals symlink has been removed
1192 in this release. Before upgrading, please ensure that you change
1193 any configuration scripts or /etc/sysctl.conf files that access
1194 /proc/sys/portals/* or sysctl portals.* to use the corresponding
1195 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
1196 in advance of the upgrade on any system running Lustre 1.4.6 or
1197 newer, since /proc/sys/lnet was added in that version.
1198 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1202 Frequency : only when quota is used
1204 Description: avoid scanning export list for quota master
1205 Details : Change the algorithms to avoid scanning export list in order
1206 to improve the efficiency.
1209 Frequency : MDS failover only, very rarely
1211 Description: "went back in time" messages on mds failover
1212 Details : The greatest transno may be lost when the current operation
1213 finishes with an error (transno==0) and the client's last_rcvd
1214 record is over-written. Save the greatest transno in the
1215 mds_last_transno for this case.
1218 Frequency : always for specific kernels and striping counts
1220 Description: client may get "Matching packet too big" without ACL support
1221 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
1222 when trying to access files in certain configurations. The
1223 clients should in fact be denied when mounting because they do
1224 not understand ACLs.
1227 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
1229 Description: many clients connecting with IO in progress causes connect timeouts
1230 Details : Avoid synchronous journal commits to avoid delays caused by many
1231 clients connecting/disconnecting when bulk IO is in progress.
1232 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
1233 OST_IO_PORTAL to avoid delays behind potentially many pending
1237 Frequency : occasionally with multiple writers to a single file
1239 Description: shared writes to file may result in wrong size reported by stat()
1240 Details : Allow growing of kms when extent lock is cancelled
1243 Frequency : always with random mmap IO to multi-striped file
1245 Description: mmap write might be lost if we are writing to a 'hole' in stripe
1246 Details : Only if the hole is at the end of OST object so that kms is too
1247 small. Fix is to increase kms accordingly in ll_nopage.
1250 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
1252 Description: writes to a missing object would leak memory on the OST
1253 Details : If there is an inconsistency between the MDS and OST filesystems,
1254 such that the MDS references an object that doesn't exist, writes
1255 to that object will leak memory due to incorrect cleanup in the
1256 error handling path, eventually running out of memory on the OST.
1261 Description: Creating too long symlink causes lustre errors
1262 Details : Check symlink and name lengths before sending requests to MDS.
1265 Frequency : only if flock is enabled (not on by default)
1267 Description: posix locks not released on fd closure on 2.6.9+
1268 Details : We failed to add posix locks to list of inode locks on 2.6.9+
1269 kernels, this caused such locks not to be released on fd close and
1270 then assertions on fs unmount about still used locks.
1273 Frequency : MDS failover only, very rarely
1275 Description: clients may get ASSERTION(granted_lock != NULL)
1276 Details : When request was taking a long time, and a client was resending
1277 a getattr by name lock request. The were multiple lock requests
1278 with the same client lock handle and
1279 mds_getattr_name->fixup_handle_for_resent_request found one of the
1280 lock handles but later failed with ASSERTION(granted_lock != NULL).
1285 Description: handle->h_buffer_credits > 0, assertion failure
1286 Details : h_buffer_credits is zero after truncate, causing assertion
1287 failure. This patch extends the transaction or creates a new
1291 Frequency : NFS re-export or patchless client
1292 Bugzilla : 11179, 10796
1293 Description: Crash on NFS re-export node (__d_move)
1294 Details : We do not want to hash the dentry if we don't have a lock.
1295 But if this dentry is later used in d_move, we'd hit uninitialised
1296 list head d_hash, so we just do this to init d_hash field but
1297 leave dentry unhashed.
1300 Frequency : NFS re-export or patchless client
1302 Description: NFS exports has problem with symbolic link
1303 Details : lustre client didn't properly install dentry when re-exported
1304 to NFS or running patchless client.
1307 Frequency : NFS re-export or patchless client
1309 Description: Various nfs/patchless fixes.
1310 Details : fixes reuse disconected alias for lookup process - this fixes
1311 warning "find_exported_dentry: npd != pd",
1312 fix permission error with open files at nfs.
1313 fix apply umask when do revalidate.
1316 Frequency : occasional
1318 Description: Crash on NFS re-export node
1319 Details : calling clear_page() on the wrong pointer triggered oops in
1320 generic_mapping_read().
1323 Frequency : rarely, using O_DIRECT IO
1325 Description: unaligned directio crashes client with LASSERT
1326 Details : check for unaligned buffers before trying any requests.
1329 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
1331 Description: stale data returned from RAID cache
1332 Details : If only a small amount of IO is done to the RAID device before
1333 reading it again it is possible to get stale data from the RAID
1334 cache instead of reading it from disk.
1337 Frequency : always for sles10 kernel
1339 Description: sles10 support
1340 Details : ll_follow_link: compile fixes and using of nd_set_link
1341 under newer kernels.
1344 Frequency : depends on arch, kernel and compiler version, always on sles10
1347 Description: recursive or deep enough symlinks cause stack overflow
1348 Details : getting rid of large stack-allocated variable in
1352 Frequency : depends on hardware
1354 Description: lustre write performance loss in the SLES10 kernel
1355 Details : the performance loss is caused by using of write barriers in the
1356 ext3 code. The SLES10 kernel turns barrier support on by
1357 default. The fix is to undo that change for ldiskfs.
1359 ------------------------------------------------------------------------------
1361 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
1363 * Support for kernels:
1364 2.6.9-42.0.3EL (RHEL 4)
1365 2.6.5-7.276 (SLES 9)
1366 2.4.21-47.0.1.EL (RHEL 3)
1367 2.6.12.6 vanilla (kernel.org)
1371 Frequency : quota enabled and large files being deleted
1373 Description: releasing more than 4GB of quota at once hangs OST
1374 Details : If a user deletes more than 4GB of files on a single OST it
1375 will cause the OST to spin in an infinite loop. Release
1376 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1381 Description: statfs data retrieved from /proc may be stale or zero
1382 Details : When reading per-device statfs data from /proc, in the
1383 {kbytes,files}_{total,free,avail} files, it may appear
1384 as zero or be out of date.
1387 Frequency : systems with MD RAID1 external journal devices
1389 Description: lconf's call to blkid is confused by RAID1 journal devices
1390 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1391 of returning all block devices that match the journal UUID.
1394 Frequency : always, for aggregate stripe size over 4GB
1396 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
1397 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
1398 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
1401 Frequency : always if "lfs find" used on a local file/directory
1403 Description: "lfs find" segfaults if used on a local file/directory
1404 Details : The case where a directory component was not specified wasn't
1405 handled correctly. Handle this properly.
1408 Frequency : always on ppc64
1410 Description: the write to an ext3 filesystem mounted with mballoc got stuck
1411 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1412 perform endianness conversion.
1415 Frequency : rarely (truncate to non-zero file size after write under load)
1416 Bugzilla : 10730, 10687
1417 Description: Files padded with zeros to next 4K multiple
1418 Details : With filesystems mounted using the "extents" option (2.6 kernels)
1419 it is possible that files that are truncated to a non-zero size
1420 immediately after being written are filled with zero bytes beyond
1421 the truncated size. No file data is lost.
1423 Severity : enhancement
1425 Description: Allow recovery/failover for liblustre clients.
1426 Details : liblustre clients were unaware of failover configurations until
1429 Severity : enhancement
1431 Description: user file locks should fail when not mounting with flock option
1432 Details : Set up an error-returning stub in ll_file_operations.lock field
1433 to prevent incorrect behaviour when client is mounted without
1434 flock option. Also, set up properly f_op->flock field for
1438 Frequency : always on ia64
1440 Description: "lfs df" loops on printing out MDS statfs information
1441 Details : The obd_ioctl_data was not initialized and in some systems
1442 this caused a failure during the ioctl that did not return
1443 an error. Initialize the struct and return an error on failure.
1446 Frequency : SLES 9 only
1448 Description: Error of copying files with lustre special EAs as root
1449 Details : Client side always return success for setxattr call for lustre
1450 special xattr (currently only "trusted.lov").
1453 Frequency : rarely on clusters with both ia64+i386 clients
1455 Description: ia64+i686 clients doing shared IO on the same file may LBUG
1456 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
1457 clients are doing concurrent writes to the same file it is
1458 possible that the ia64 clients may LASSERT because the OST
1459 extent locks are not PAGE_SIZE aligned. Ensure that grown
1460 locks are always aligned on the request boundary.
1463 Frequency : specific use, occasional
1465 Description: Overwriting in use executable truncates on-disk binary image
1466 Details : If one node attempts to overwrite an executable in use by
1467 another node, we now correctly return ETXTBSY instead of
1468 truncating the file.
1470 Severity : enhancement
1472 Description: Async OSC create to avoid the blocking unnecessarily.
1473 Details : If a OST has no remain object, system will block on the creating
1474 when need to create a new object on this OST. Now, ways use
1475 pre-created objects when available, instead of blocking on an
1476 empty osc while others are not empty. If we must block, we block
1477 for the shortest possible period of time.
1482 Description: chmod on Lustre root is propagated to other clients
1483 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
1484 invalid by the follow_mount time.
1487 Frequency : liblustre clients only
1489 Description: Race in 'instant cancel' lock handling could lead to such locks
1490 never to be granted in case of SMP MDS
1491 Details : Do not destroy not yet granted but cbpending locks in
1495 Frequency : replay/resend of open
1497 Description: non null lock assetion failure in mds_intent_policy
1498 Details : Trying to replay/resend lockless open requests resulted in
1499 mds_open() returning 0 with no lock. Now it sets a flag if
1500 a lock is going to be returned.
1502 Severity : enhancement
1504 Description: Checksum enhancements
1505 Details : New checksum enhancements allow for resending RPCs that failed
1508 Severity : enhancement
1510 Description: Tunables on number of dirty pages in cacche
1511 Details : Allow to set limit on number of dirty pages cached.
1516 Description: client crash on unmount - lock still has references
1517 Details : In some error handling cases it was possible to leak a lock
1518 reference on a client while accessing a file. This was not
1519 harmful to the client during operation, but would cause the
1520 client to crash when the filesystem is unmounted.
1523 Frequency : specific case, rare
1525 Description: ETXTBSY on mds though file not in use by client
1526 Details : ETXTBSY is no longer incorrectly returned when attempting to
1527 chmod or chown a directory that the user previously tried to
1528 execute or a currently-executing binary.
1531 Frequency : extremely rare except on liblustre-based clients
1533 Description: Lustre space not freed when files are deleted
1534 Details : Clean up open-unlinked files after client eviction. Previously
1535 the unlink was skipped and the files remained as orphans.
1540 Description: OST failure "would be an LBUG" in waiting_locks_callback()
1541 Details : In some cases it was possible to send a blocking callback to
1542 a client doing a glimpse, even though that client didn't get
1543 a lock granted. When the glimpse lock is cancelled on the OST
1544 the freed lock is left on the waiting list and corrupted the list.
1547 Frequency : all core dumps
1549 Description: Broke core dumps to lustre
1550 Details : Negative dentry may be unhashed if parent does not have UPDATE
1551 lock, but some callers, e.g. do_coredump, expect dentry to be
1552 hashed after successful create, hash it in ll_create_it.
1554 ------------------------------------------------------------------------------
1556 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
1558 * Support for kernels:
1559 2.6.9-42.0.2.EL (RHEL 4)
1560 2.6.5-7.276 (SLES 9)
1561 2.4.21-40.EL (RHEL 3)
1562 2.6.12.6 vanilla (kernel.org)
1566 Frequency : always on RHEL 3
1568 Description: Number of open files grows over time
1569 Details : The number of open files grows over time, whether or not
1570 Lustre is started. This was due to a filp leak introduced
1571 by one of our kernel patches.
1573 ------------------------------------------------------------------------------
1575 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1577 * Support for kernels:
1578 2.6.9-42.EL (RHEL 4)
1579 2.6.5-7.276 (SLES 9)
1580 2.4.21-40.EL (RHEL 3)
1581 2.6.12.6 vanilla (kernel.org)
1586 Bugzilla : 5719, 9635, 9792, 9684
1587 Description: OST (or MDS) trips assertions in (re)connection under heavy load
1588 Details : If a server is under heavy load and cannot reply to new
1589 connection requests before the client resends the (re)connect,
1590 the connection handling code can behave badly if two service
1591 threads are concurrently handing separate (re)connections from
1592 the same client. Add better locking to the connection handling
1593 code, and ensure that only a single connection will be processed
1594 for a given client UUID, even if the lock is dropped.
1596 Severity : enhancement
1598 Description: add TCP zero-copy support to kernel
1599 Details : Add support to the kernel TCP stack to allow zero-copy bulk
1600 sends if the hardware supports scatter-gather and checksumming.
1601 This allows socklnd to do client-write and server-read more
1602 efficiently and reduce CPU utilization from skbuf copying.
1605 Frequency : only if NFS exporting from client
1607 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
1608 Details : If setting attributes on a file created under NFS that had
1609 never been opened it would be possible to oops the client
1610 if the file had no objects.
1613 Frequency : always for liblustre
1615 Description: liblustre client does MDS+OSTs setattr RPC for each write
1616 Details : When doing a write from a liblustre client, the client
1617 incorrectly issued an RPC to the MDS and each OST the file was
1618 striped over in order to update the timestamps. When writing
1619 with small chunks and many clients this could overwhelm the MDS
1620 with RPCs. In all cases it would slow down the write because
1621 these RPCs are unnecessary.
1623 Severity : enhancement
1625 Description: allow number of MDS service threads to be changed at module load
1626 Details : It is now possible to change the number of MDS service threads
1627 running. Adding "options mds mds_num_threads={N}" to the MDS's
1628 /etc/modprobe.conf will set the number of threads for the next
1629 time Lustre is restarted (assuming the "mds" module is also
1630 reloaded at that time). The default number of threads will
1631 stay the same, 32 for most systems.
1636 Description: OST crash if filesystem is unformatted or corrupt
1637 Details : If an OST is started on a device that has never been formatted
1638 or if the filesystem is corrupt and cannot even mount then the
1639 error handling cleanup routines would dereference a NULL pointer.
1644 Description: NULL pointer deref in llap_from_page.
1645 Details : get_cache_page_nowait can return a page with NULL (or otherwise
1646 incorrect) mapping if the page was truncated/reclaimed while it was
1647 searched for. Check for this condition and skip such pages when
1648 doing readahead. Introduce extra check to llap_from_page() to
1649 verify page->mapping->host is non-NULL (so page is not anonymous).
1652 Frequency : Sometimes when using sys_sendfile
1654 Description: "page not covered by a lock" warnings from ll_readpage
1655 Details : sendfile called ll_readpage without right page locks present.
1656 Now we introduced ll_file_sendfile that does necessary locking
1657 around call to generic_file_sendfile() much like we do in
1661 Frequency : with certain MDS communication failures at client mount time
1663 Description: NULL pointer deref after failed client mount
1664 Details : a client connection request may delayed by the network layer
1665 and not be sent until after the PTLRPC layer has timed out the
1666 request. If the client fails the mount immediately it will try
1667 to clean up before the network times out the request. Add a
1668 reference from the request import to the obd device and delay
1669 the cleanup until the network drops the request.
1672 Frequency : occasionally during client (re)connect
1674 Description: assertion failure during client (re)connect
1675 Details : processing a client connection request may be delayed by the
1676 client or server longer than the client connect timeout. This
1677 causes the client to resend the connection request. If the
1678 original connection request is replied in this interval, the
1679 client may trip an assertion failure in ptlrpc_connect_interpret()
1680 which thought it would be the only running connect process.
1683 Frequency : only with obd_echo servers and clients that are rebooted
1685 Description: kernel BUG accessing uninitialized data structure
1686 Details : When running an obd_echo server it did not start the ping_evictor
1687 thread, and when a client was evicted an uninitialized data
1688 structure was accessed. Start the ping_evictor in the RPC
1689 service startup instead of the OBD startup.
1691 Severity : enhancement
1692 Bugzilla : 10193 (patchless)
1693 Description: Remove dependency on various unexported kernel interfaces.
1694 Details : No longer need reparent_to_init, exit_mm, exit_files,
1695 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
1698 Frequency : rare (only users of deprecated and unsupported LDAP config)
1700 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
1701 Details : LDAP apparently contains 'lustreName' attributes instead of
1702 'name'. A simple remapping of the name is sufficient.
1705 Frequency : rare (only with non-default dump_on_timeout debug enabled)
1707 Description: waiting_locks_callback trips kernel BUG if client is evicted
1708 Details : Running with the dump_on_timeout debug flag turned on makes
1709 it possible that the waiting_locks_callback() can try to dump
1710 the Lustre kernel debug logs from an interrupt handler. Defer
1711 this log dumping to the expired_lock_main() thread.
1713 Severity : enhancement
1715 Description: Support NFS exporting on 2.6 kernels.
1716 Details : Implement non-rawops metadata methods for NFS server to use without
1717 changing NFS server code.
1720 Frequency : very rare (synthetic metadata workload only)
1722 Description: two racing renames might cause an MDS thread to deadlock
1723 Details : Running the "racer" program may cause one MDS thread to rename
1724 a file from being the source of a rename to being the target of
1725 a rename at exactly the same time that another thread is doing
1726 so, and the second thread has already enqueued these locks after
1727 doing a lookup of the target and is trying to relock them in
1728 order. Ensure that we don't try to re-lock the same resource.
1731 Frequency : only very large systems with liblustre clients
1733 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
1734 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
1735 all OSTs in parallel. This allows the eviction of stale liblustre
1736 clients to proceed much faster than if they were done in series,
1737 and also offers similar improvements for other set_info RPCs.
1742 Description: excessive CPU usage during initial read phase on client
1743 Details : During the initial read phase on a client, it would agressively
1744 retry readahead on the file, consuming too much CPU and impacting
1745 performance (since 1.4.5.8). Improve the readahead algorithm
1746 to avoid this, and also improve some other common cases (read
1747 of small files in particular, where "small" is files smaller than
1748 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
1753 Description: MDS crash when receiving packet with unknown intent.
1754 Details : Do not LBUG in unknown intent case, just return -EFAULT
1756 Severity : enhancement
1757 Bugzilla : 9293, 9385
1758 Description: MDS RPCs are serialised on client. This is unnecessary for some.
1759 Details : Do not serialize getattr (non-intent version) and statfs.
1762 Frequency : occasional, when OST network is overloaded/intermittent
1764 Description: client evicted by OST after bulk IO timeout
1765 Details : If a client sends a bulk IO request (read or write) the OST
1766 may evict the client if it is unresposive to its data GET/PUT
1767 request. This is incorrect if the network is overloaded (takes
1768 too long to transfer the RPC data) or dropped the OST GET/PUT
1769 request. There is no need to evict the client at all, since
1770 the pinger and/or lock callbacks will handle this, and the
1771 client can restart the bulk request.
1774 Frequency : Always when mmapping file with no objects
1776 Description: client crashes when mmapping file with no objects
1777 Details : Check that we actually have objects in a file before doing any
1778 operations on objects in ll_vm_open, ll_vm_close and
1784 Description: Request leak when working with deleted CWD
1785 Details : Introduce advanced request refcount tracking for requests
1786 referenced from lustre intent.
1788 Severity : Enhancement
1790 Description: Cache open file handles on client.
1791 Details : MDS now will return special lock along with openhandle, if
1792 requested and client is allowed to hold openhandle, even if unused,
1793 until such a lock is revoked. Helps NFS a lot, since NFS is opening
1794 closing files for every read/write openration.
1796 Severity : Enhancement
1798 Description: Cache open negative dentries on client when possible.
1799 Details : Guard negative dentries with UPDATE lock on parent dir, drop
1800 negative dentries on lock revocation.
1805 Description: Remounting a client read-only wasn't possible with a zconf mount
1806 Details : It wasn't possible to remount a client read-only with llmount.
1808 Severity : enhancement
1809 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
1810 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
1811 MPICH is included to add Lustre-specific ADIO interfaces.
1812 This is based closely on the UFS ADIO layer and only differs
1813 in file creation, in order to allow the OST striping to be set.
1814 This is user-contributed code and not supported by CFS.
1819 Description: extended inode attributes (immutable, append-only) work improperly
1820 when 2.4 and 2.6 kernels are used on client/server or vice versa
1821 Details : Introduce kernel-independent values for these flags.
1823 Severity : enhancement
1826 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
1827 Details : Many of the /proc/ tunables can only be tuned at a megabyte
1828 granularity. Now, Fractional MB granularity is be supported,
1829 this is very useful for low memory system.
1831 Severity : enhancement
1833 Description: Getattr by fid
1834 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
1835 locks, avoids extra getattr rpc requests to MDS, allows '/' to
1836 have locks and avoids getattr rpc requests for it on every stat.
1839 Frequency : Always, for filesystems larger than 2TB
1841 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1842 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
1843 filesystems larger than 2TB to be mounted with mballoc enabled.
1846 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
1848 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1849 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
1850 filesystems larger than 2TB is mounted then the kernel will
1851 silently corrupt the start of the filesystem. CONFIG_LBD is
1852 enabled for all CFS-supported kernels, but the possibility of
1853 this happening with a modified kernel config exists.
1855 Severity : enhancement
1857 Description: add client O_DIRECT support for 2.6 kernels
1858 Details : It is now possible to do O_DIRECT reads and writes to files
1859 in the Lustre client mountpoint on 2.6 kernel clients.
1861 Severity : enhancement
1863 Description: parallel glimpse, setattr, statfs, punch, destroy requests
1864 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
1865 parallel, not waiting for response from every OST before sending
1866 a rpc to the next OST.
1871 Description: setattr vs write race when updating file timestamps
1872 Details : Client processes that update a file timestamp into the past
1873 right after writing to the file (e.g. tar) it is possible that
1874 the updated file modification time can be reset to the current
1875 time due to a race between processing the setattr and write RPC.
1877 Severity : enhancement
1879 Description: Bring 'lfs find' closer in line with regular Linux find.
1880 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
1881 -print0 options and obtains all the needed info through the lustre
1884 Severity : enhancement
1886 Description: support up to 1024 configured devices on one node
1887 Details : change obd_dev array from statically allocated to dynamically
1888 allocated structs as they are first used to reduce memory usage
1893 Description: Flush dirty partially truncated pages during truncate
1894 Details : Immediatelly flush partially truncated pages in filter_setattr,
1895 this way we completely avoid having any pages in page cache on OST
1896 and can retire ugly workarounds during writes to flush such pages.
1901 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1902 Details : protect inode from truncation within vfs_unlink() context
1903 just take a reference before calling vfs_unlink() and release it
1904 when parent's i_sem is free.
1909 Description: last_id value checked outside lock on OST caused LASSERT failure
1910 Details : If there were multiple MDS->OST object precreate requests in
1911 flight, it was possible that the OST's last object id was checked
1912 outside a lock and incorrectly tripped an assertion. Move checks
1913 inside locks, and discard old precreate requests.
1916 Frequency : always, if extents are used on OSTs
1918 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1919 Details : OSTs using the extents format would not zero the high 16 bits of
1920 the index physical block number. This is not a problem for any
1921 OST filesystems smaller than 16TB, and no kernels support ext3
1922 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1923 new/modified files) and can be fixed for existing filesystems
1924 with e2fsprogs-1.39-cfs1.
1929 Description: import connection selection may be incorrect if timer wraps
1930 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1931 import connections to be ignored if the 32-bit jiffies counter
1932 wraps. Use a 64-bit jiffies counter.
1935 Frequency : very large clusters immediately after boot
1937 Description: LNET request buffers exhausted under heavy short-term load
1938 Details : If a large number of client requests are generated on a service
1939 that has previously never seen so many requests it is possible
1940 that the request buffer growth cannot keep up with the spike in
1941 demand. Instead of dropping incoming requests, they are held in
1942 the LND until the RPC service can accept more requests.
1945 Frequency : Sometimes during replay
1947 Description: Assertion failure in ll_local_open after replay.
1948 Details : If replay happened on an open request reply before we were able
1949 to set replay handler, reply will become not swabbed tripping the
1950 assertion in ll_local_open. Now we set the handler right after
1951 recognising of open request
1954 Frequency : very rare
1956 Description: kernel reports "badness in vsnprintf"
1957 Details : Reading from the "recovery_status" /proc file in small chunks
1958 may cause a negative length in lprocfs_obd_rd_recovery_status()
1959 call to vsnprintf() (which is otherwise harmless). Exit early
1960 if there is no more space in the output buffer.
1962 Severity : enhancement
1964 Description: clear OBD RPC statistics by writing to them
1965 Details : It is now possible to clear the OBD RPC statistics by writing
1966 to the "stats" file.
1971 Description: Client mtime is not the same on different clients after utimes
1972 Details : In some cases, the client was using the utimes() syscall on
1973 a file cached on another node. The clients now validate the
1974 ctime from the MDS + OSTs to determine which one is right.
1979 Description: Inability to activate failout mode
1980 Details : lconf script incorrectly assumed that in pythong string's numeric
1981 value is used in comparisons.
1984 Frequency : always with multiple stripes per file
1986 Description: Inefficient object allocation for mutli-stripe files
1987 Details : When selecting which OSTs to stripe files over, for files with
1988 a stripe count that divides evenly into the number of OSTs,
1989 the MDS is always picking the same starting OST for each file.
1990 Return the OST selection heuristic to the original design.
1995 Description: mount failures may take full timeout to return an error
1996 Details : Under some heavy load conditions it is possible that a
1997 failed mount can wait for the full obd_timeout interval,
1998 possibly several minutes, before reporting an error.
1999 Instead return an error as soon as the status is known.
2001 Frequency : quota enabled and large files being deleted
2003 Description: releasing more than 4GB of quota at once hangs OST
2004 Details : If a user deletes more than 4GB of files on a single OST it
2005 will cause the OST to spin in an infinite loop. Release
2006 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
2011 Description: statfs data retrieved from /proc may be stale or zero
2012 Details : When reading per-device statfs data from /proc, in the
2013 {kbytes,files}_{total,free,avail} files, it may appear
2014 as zero or be out of date.
2017 Frequency : systems with MD RAID1 external journal devices
2019 Description: lconf's call to blkid is confused by RAID1 journal devices
2020 Details : Use the "blkid -l" flag to locate the MD RAID device instead
2021 of returning all block devices that match the journal UUID.
2024 Frequency : always, for aggregate stripe size over 4GB
2026 Description: assertion fails when trying to use 4GB stripe size
2027 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
2028 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
2031 Frequency : always on ppc64
2033 Description: the first write on an ext3 filesystem with mballoc got stuck
2034 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
2035 perform endianness conversion.
2037 ------------------------------------------------------------------------------
2039 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
2041 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
2042 INTEROPERATE with older versions automatically. Please read the
2043 user documentation before upgrading any part of a live system.
2044 * WARNING: Lustre networking configuration changes are required with
2045 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
2048 * Support for kernels:
2049 2.6.9-22.0.2.EL (RHEL 4)
2050 2.6.5-7.244 (SLES 9)
2051 2.6.12.6 vanilla (kernel.org)
2054 Severity : enhancement
2055 Bugzilla : 7981/8208
2056 Description: Introduced Lustre Networking (LNET)
2057 Details : LNET is new networking infrastructure for Lustre, it includes
2058 a reorganized network configuration mode (see the user
2059 documentation for full details) as well as support for routing
2060 between different network fabrics. Lustre Networking Devices
2061 (LNDs) for the supported network fabrics have also been
2062 created for this new infrastructure.
2064 Severity : enhancement
2065 Description: Introduced Access control lists
2066 Details : clients can set ACLs on files and directories in order to have
2067 more fine-grained permissions than the standard Unix UGO+RWX.
2068 The MDS must be started with the "-o acl" mount option.
2070 Severity : enhancement
2071 Description: Introduced filesystem quotas
2072 Details : Administrators may now establish per-user quotas on the
2075 Severity : enhancement
2077 Description: Configuration change for the XT3
2078 The PTLLND is now used to run Lustre over Portals on the XT3
2079 The configure option(s) --with-cray-portals are no longer used.
2080 Rather --with-portals=<path-to-portals-includes> is used to
2081 enable building on the XT3. In addition to enable XT3 specific
2082 features the option --enable-cray-xt3 must be used.
2087 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
2088 Details : A race between allocating a new llcd and re-getting the llcd_lock
2089 allowed another thread to grab newly-allocated llcd.
2091 Severity : enhancement
2093 Description: 2.6 OST async journal commit and locking fix to improve performance
2094 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
2095 2.6 kernels are now async as they already were in 2.4 kernels so
2096 that they can commit concurrently with the network bulk transfer.
2097 For block-allocated files the filter allocation semaphore is held
2098 to avoid filesystem fragmentation during allocation. BKL lock
2099 removed for 2.6 xattr operations where it is no longer needed.
2104 Description: lconf incorrectly determined whether two IP networks could talk
2105 Details : In some more complicated routing and multiple-network
2106 configurations, lconf will avoid trying to make a network
2107 connection to a disjoint part of the IP space. It was doing the
2108 math incorrectly for one set of cases.
2113 Description: Fix for potential infinite loop processing records in an llog.
2114 Details : If an llog record is corrupted/zeroed, it is possible to loop
2115 forever in llog_process(). Validate the llog record length
2116 and skip the remainder of the block on error.
2119 Frequency : occasional (liblustre only)
2121 Description: liblustre could not open files whose last component is a symlink
2122 Details : sysio_path_walk() would incorrectly pass the open intent to
2123 intermediate path components.
2126 Frequency : rare (liblustre only with non-standard tuning)
2127 Bugzilla : 7201 (7350)
2128 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
2129 Details : llu_lookup_finish_locks() tries to set lock data on a lock
2130 after it has been released, only do this for referenced locks
2132 Severity : enhancement
2134 Description: specifying an (invalid) directory default stripe_size of -1
2135 would reset the directory default striping
2136 Details : stripe_size -1 was used internally to signal directory stripe
2137 removal, now use "all default" to signal dir stripe removal
2138 as a directory striping of "all default" is not useful
2141 Frequency : common for large clusters running liblustre clients
2143 Description: doing an ls when liblustre clients are running is slow
2144 Details : sending a glimpse AST to a liblustre client waits for every AST
2145 to time out, as liblustre clients will not respond. Since they
2146 cannot cache data we refresh the OST lock LVB from disk instead.
2148 Severity : enhancement
2150 Description: doing an ls at the same time as file IO can be slow
2151 Details : enqueue and other "small" requests can be blocked behind many
2152 large IO requests. Create a new OST IO portal for non-IO
2153 requests so they can be processed faster.
2156 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
2158 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
2159 created file with mode 000
2160 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
2161 allow an ftruncate() as a non-root user to a file with mode 000.
2162 Lustre now respects this flag to disable mode checks when
2163 truncating a file owned by the user
2166 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
2169 Description: Revoking locks from clients that went dead or catatonic might take
2171 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
2172 cancellation of such locks instant on servers without waiting for
2173 any reply from clients. Clients drops these locks when cancel
2174 notification from server is received without replying.
2177 Frequency : liblustre-only, when liblustre client dies or becomes busy
2179 Description: Doing ls on Linux clients can take a long time with active
2181 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
2182 granting such locks to it in the first place if possible. Locks
2183 are taken by proxy on the OST during the read or write and
2184 dropped immediately afterward. Add connect flags handling, do
2185 not grant locks to liblustre clients for glimpse ASTs.
2187 Severity : enhancement
2189 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
2190 Details : Existing read-ahead algorithm is tuned for the case of streamlined
2191 sequential reads and behaves badly with applications doing random
2192 reads. Improve it by reading ahead at least read region, and
2193 avoiding excessive large RPC for small reads.
2195 Severity : enhancement
2197 Description: Creating more than 1000 files for a single job may cause a load
2198 imbalance on the OSTs if there are also a large number of OSTs.
2199 Details : qos_prep_create() uses an OST index reseed value that is an
2200 even multiple of the number of available OSTs so that if the
2201 reseed happens in the middle of the object allocation it will
2202 still utilize the OSTs as uniformly as possible.
2207 Description: OST or MDS may oops in ping_evictor_main()
2208 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
2209 but doesn't restart at beginning of obd_exports_timed list
2212 Severity : enhancement
2214 Description: improve by-nid export eviction on the MDS and OST
2215 Details : allow multiple exports with the same NID to be evicted at one
2216 time without re-searching the exports list.
2219 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
2221 Description: MDS may oops in groups_free()
2222 Details : in rare race conditions a newly allocated group_info struct is
2223 freed again, and this can be NULL. The 2.4 compatibility code
2224 for groups_free() checked for a NULL pointer, but 2.6 did not.
2227 Frequency : common for liblustre clients doing little filesystem IO
2228 Bugzilla : 9352, 7313
2229 Description: server may evict liblustre clients accessing contended locks
2230 Details : if a client is granted a lock or receives a completion AST
2231 with a blocking AST already set it would not reply to the AST
2232 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
2235 Frequency : lfs setstripe, only systems with more than 160 OSTs
2237 Description: unable to set striping with a starting offset beyond OST 160
2238 Details : llapi_create_file() incorrectly limited the starting stripe
2239 index to the maximum single-file stripe count.
2242 Frequency : LDAP users only
2244 Description: lconf did not handle in-kernel recovery with LDAP properly
2245 Details : lconf/LustreDB get_refs() is searching the wrong namespace
2247 Severity : enhancement
2249 Description: bind OST threads to NUMA nodes to improve performance
2250 Details : all OST threads are uniformly bound to CPUs on a single NUMA
2251 node and do their allocations there to localize memory access
2253 Severity : enhancement
2255 Description: llmount can determine client NID directly from Myrinet (GM)
2256 Details : the client NID code from gmnalnid was moved directly into
2257 llmount, removing the need to use this or specifying the
2258 client NID explicitly when mounting GM clients with zeroconf
2261 Frequency : if client is started with down MDS
2263 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
2264 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
2265 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
2266 ptlrpc_import_delayed_req() because we didn't check if the
2267 request was interrupted, and we also didn't break out of the
2268 event loop if there was no timeout
2273 Description: data loss during non-page-aligned writes to a single file from
2274 both multiple nodes and multiple threads on one node at same time
2275 Details : updates to KMS and lsm weren't protected by common lock. Resulting
2276 inconsistency led to false short-reads, that were cached and later
2277 used by ->prepare_write() to fill in partially written page,
2278 leading to data loss.
2281 Frequency : always, if lconf --abort_recovery used
2283 Description: lconf --abort_recovery fails with 'Operation not supported'
2284 Details : lconf was attempting to abort recovery on the MDT device and not
2287 Severity : enhancement
2289 Description: remove cleanup logs
2290 Details : replace lconf-generated cleanup logs with lustre internal
2291 cleanup routines. Eliminates the need for client-cleanup and
2294 Severity : enhancement
2296 Description: add support for EAs (user and system) on lustre filesystems
2297 Details : it is now possible to store extended attributes in the Lustre
2298 client filesystem, and with the user_xattr mount option it
2299 is possible to allow users to store EAs on their files also
2301 Severity : enhancement
2303 Description: Add possibility (config option) to show minimal available OST free
2305 Details : When compiled with --enable-mindf configure option, statfs(2)
2306 (and so, df) will return least minimal free space available from
2307 all OSTs as amount of free space on FS, instead of summary of
2308 free spaces of all OSTs.
2310 Severity : enhancement
2312 Description: do not expand extent locks acquired on OST-side
2313 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
2314 by server: they are not cached anyway.
2317 Frequency : when mmap is used/binaries executed from Lustre
2319 Description: Unmmap pages before throwing them away from read cache.
2320 Details : llap_shrink cache now attempts to unmap pages before discarding
2321 them (if unmapping failed - do not discard). SLES9 kernel has
2322 extra checks that trigger if this unmapping is not done first.
2327 Description: lconf didn't resolve symlinks before checking to see whether a
2328 given mountpoint was already in use
2331 Frequency : when migrating failover services
2332 Bugzilla : 6395, 9514
2333 Description: When migrating a subset of services from a node (e.g. failback
2334 from a failover service node) the remaining services would
2335 time out and evict clients.
2336 Details : lconf --force (implied by --failover) sets the global obd_timeout
2337 to 5 seconds in order to quickly disconnect, but this caused
2338 other RPCs to time out too quickly. Do not change the global
2339 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
2341 Severity : enhancement
2342 Frequency : if MDS is started with down OST
2343 Bugzilla : 9439,5706
2344 Description: Allow startup/shutdown of an MDS without depending on the
2345 availability of the OSTs.
2346 Details : Asynchronously call mds_lov_synchronize during MDS startup.
2347 Add appropriate locking and lov-osc refcounts for safe
2348 cleaning. Add osc abort_inflight calls in case the
2349 synchronize never started.
2352 Frequency : occasional (Cray XT3 only)
2354 Description: root not authorized to access files in CRAY_PORTALS environment
2355 Details : The client process capabilities were not honoured on the MDS in
2356 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
2357 been accessed by an authorized user then root was able to access
2358 the file on the local client also. The root user capabilities
2359 are now allowed on the MDS, as this environment has secure UID.
2362 Frequency : occasional
2364 Description: ldiskfs "too long searching" message happens too often
2365 Details : A debugging message (otherwise harmless) prints too often on
2366 the OST console. This has been reduced to only happen when
2367 there are fragmentation problems on the filesystem.
2372 Description: Division by zero in statfs when all OSCs are inactive
2373 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
2374 lov_statfs divides by value returned by lov_get_stripecnt().
2378 Bugzilla : 9489, 3273
2379 Description: First write from each client to each OST was only 4kB in size,
2380 to initialize client writeback cache, which caused sub-optimal
2381 RPCs and poor layout on disk for the first writen file.
2382 Details : Clients now request an initial cache grant at (re)connect time
2383 and so that they can start streaming writes to the cache right
2384 away and always do full-sized RPCs if there is enough data.
2385 If the OST is rebooted the client also re-establishes its grant
2386 so that client cached writes will be honoured under the grant.
2391 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
2392 Details : Now I/O RPCs go to different portal number and (presumably) fast
2393 lock requests (and glimses) and other RPCs get their own service
2394 threads pool that should be able to service those RPCs
2397 Severity : enhancement
2399 Description: Ability to exchange lustre version between client and servers and
2400 issue warnings at client side if client is too old. Also for
2401 liblustre clients there is ability to refuse connection of too old
2403 Details : New 'version' field is added to connect data structure that is
2404 filled with version info. That info is later checked by server and
2408 Frequency : rare, liblustre only.
2409 Bugzilla : 9296, 9581
2410 Description: Two simultaneous writes from liblustre at offset within same page
2411 might proceed at the same time overwriting eachother with stale
2413 Details : I/O lock withing llu_file_prwv was released too early, before data
2414 actually was hitting the wire. Extended lock-holding time until
2415 server acknowledges receiving data.
2418 Frequency : extremely rare. Never observed in practice.
2420 Description: avoid generating lustre_handle cookie of 0.
2421 Details : class_handle_hash() generates handle cookies by incrementing
2422 global counter, and can hit 0 occasionaly (this is unlikely, but
2423 not impossible, because initial value of cookie counter is
2424 selected randonly). Value of 0 is used as a sentinel meaning
2425 "unassigned handle" --- avoid it. Also coalesce two critical
2426 sections in this function into one.
2428 Severity : enhancement
2430 Description: allow liblustre clients to delegate truncate locking to OST
2431 Details : To avoid overhead of locking, liblustre client instructs OST to
2432 take extent lock in ost_punch() on client's behalf. New connection
2433 flag is added to handle backward compatibility.
2435 Severity : enhancement
2436 Bugzilla : 4928, 7341, 9758
2437 Description: allow number of OST service threads to be specified
2438 Details : a module parameter allows the number of OST service threads
2439 to be specified via "options ost ost_num_threads={N}" in the
2440 OSS's /etc/modules.conf or /etc/modprobe.conf.
2444 Bugzilla : 6146, 9635, 9895
2445 Description: servers crash with bad pointer in target_handle_connect()
2446 Details : In rare cases when a client is reconnecting it was possible that
2447 the connection request was the last reference for that export.
2448 We would temporarily drop the export reference and get a new
2449 one, but this may have been the last reference and the export
2450 was just destroyed. Get new reference before dropping old one.
2452 Severity : enhancement
2453 Frequency : if client is started with failover MDS
2455 Description: Allow multiple MDS hostnames in the mount command
2456 Details : Try to read the configuration from all specified MDS
2457 hostnames during a client mount in case the "primary"
2460 Severity : enhancement
2462 Description: Stop sending data to evicted clients as soon as possible.
2463 Details : Check if the client we are about to send or are sending data to
2464 was evicted already. (Check is done every second of waiting,
2465 for which l_wait_event interface was extended to allow checking
2466 of exit condition at specified intervals).
2469 Frequency : rare, normally only when NFS exporting is done from client
2471 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
2473 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
2476 Frequency : always, if srand() is called before liblustre initialization
2478 Description: Liblustre uses system PRNG disturbing its usage by user application
2479 Details : Introduce internal to lustre fast and high-quality PRNG for
2480 lustre usage and make liblustre and some other places in generic
2481 lustre code to use it.
2483 Severity : enhancement
2484 Bugzilla : 9477, 9557, 9870
2485 Description: Verify that the MDS configuration logs are updated when xml is
2486 Details : Check if the .xml configuration logs are newer than the config
2487 logs stored on the MDS and report an error if this is the case.
2488 Request --write-conf, or allow starting with --old_conf.
2490 Severity : enhancement
2492 Description: Handle symlinks in the path when checking if Lustre is mounted.
2493 Details : Resolve intermediate symlinks when checking if a client has
2494 mounted a filesystem to avoid duplicate client mounts.
2499 Description: lconf can hit an error exception but still return success.
2500 Details : The lconf command catches the Command error exception at the top
2501 level script context and will exit with the associated exit
2502 status, but doesn't ensure that this exit status is non-zero.
2507 Description: failure of ptlrpc thread startup can cause oops
2508 Details : Starting a ptlrpc service thread can fail if there are a large
2509 number of threads or the server memory is very fragmented.
2510 Handle this without oopsing.
2513 Frequency : always, only if liblustre and non-default acceptor port was used
2515 Description: liblustre cannot connect to servers with non-default acceptor port
2516 Details : tcpnal_set_default_params() was not called and was therefore
2517 ignoring the environment varaible TCPNAL_PORT, as well as other
2518 TCPNAL_ environment variables
2523 Description: two objects could be created on the same OST for a single file
2524 Details : If an OST is down, in some cases it was possible to create two
2525 objects on a single OST for a single file. No problems other
2526 than potential performance impact and spurious error messages.
2530 Bugzilla : 5681, 9562
2531 Description: Client may oops in ll_unhash_aliases
2532 Details : Client dcache may become inconsistent in race condition.
2533 In some cases "getcwd" can fail if the current directory is
2539 Description: Inode refcounting problems in NFS export code
2540 Details : link_raw functions used to call d_instantiate without obtaining
2541 extra inode reference first.
2545 Bugzilla : 9942, 9903
2546 Description: Referencing freed requests leading to crash, memleaks with NFS.
2547 Details : We used to require that call to ll_revalidate_it was always
2548 followed by ll_lookup_it. Also with revalidate_special() it is
2549 possible to call ll_revalidate_it() twice for the same dentry
2550 even if first occurence returned success. This fix changes semantic
2551 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
2552 reference on a request referred from the intent.
2553 ll_intent_release() then releases such a request.
2556 Frequency : rare, normally benchmark loads only
2558 Description: unlinked inodes were kept in memory on the client
2559 Details : If a client is repeatedly creating and unlinking files it
2560 can accumulate a lot of stale inodes in the inode slab cache.
2561 If there is no other client load running this can cause the
2562 client node to run out of memory. Instead flush old inodes
2563 from client cache that have the same inode number as a new inode.
2566 Frequency : SLES9 2.6.5 kernel and long filenames only
2567 Bugzilla : 9969, 10379
2568 Description: utime reports stale NFS file handle
2569 Details : SLES9 uses out-of-dentry names in some cases, which confused
2570 the lustre dentry revalidation. Change it to always use the
2574 Frequency : rare, unless heavy write-truncate concurrency is continuous
2575 Bugzilla : 4180, 6984, 7171, 9963, 9331
2576 Description: OST becomes very slow and/or deadlocked during object unlink
2577 Details : filter_destroy() was holding onto the parent directory lock
2578 while truncating+unlinking objects. For very large objects this
2579 may block other threads for a long time and slow overall OST
2580 responsiveness. It may also be possible to get a lock ordering
2581 deadlock in this case, or run out of journal credits because of
2582 the combined truncate+unlink. Solution is to do object truncate
2583 first in one transaction without parent lock, and then do the
2584 final unlink in a new transaction with the parent lock. This
2585 reduces the lock hold time dramatically.
2588 Frequency : rare, 2.4 kernels only
2590 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
2591 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
2592 before unmounting their filesystem in order to avoid deadlock.
2593 The kernel_locked() function in 2.4 kernels only checks whether
2594 the kernel lock is held, not whether it is this process that is
2595 holding it as 2.6 kernels do.
2600 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
2601 Details : The client ptlrpc code may be trying to reconnect to a down
2602 server before a previous connection attempt has timed out.
2603 Increase the reconnect interval to be longer than the connection
2604 timeout interval to avoid sending duplicate connections to
2608 Frequency : echo_client brw_test command
2610 Description: fix echo_client to work with OST preallocated code
2611 Details : OST preallocation code (5137) didn't take echo_client IO path
2612 into account: echo_client calls filter methods outside of any
2613 OST thread and, hence, there is no per-thread preallocated
2614 pages and buffers to use. Solution: hijack pga pages for IO. As
2615 a byproduct, this avoids unnecessary data copying.
2619 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
2620 Description: Client can oops in mdc_commit_close() after open replay
2621 Details : It was possible for the MDS to return an open request with no
2622 transaction number in mds_finish_transno() if the client was
2623 evicted, but without actually returning an error. Clients
2624 would later try to replay that open and may trip an assertion
2625 Simplify the client close codepath, and always return an error
2626 from the MDS in case the open is not successful.
2629 Frequency : rare, 2.6 OSTs only
2631 Description: OST may deadlock under high load on fragmented files
2632 Details : If there was a heavy load and highly-fragmented OST filesystems
2633 it was possible to have all the OST threads deadlock waiting on
2634 allocation of biovecs, because the biovecs were not released
2635 until the entire RPC IO was completed. Instead, release biovecs
2636 as soon as they are complete to ensure forward IO progress.
2638 Severity : enhancement
2640 Description: Support for specifying external journal device at mount
2641 Details : If an OST or MDS device is formatted with an external journal
2642 device, this device major/minor is stored in the ext3 superblock
2643 and may not be valid for failover. Allow detecting and
2644 specifying the external journal at mount time.
2649 Description: Mounting an MDS with pending unlinked files may cause oops
2650 Details : target_finish_recovery() calls mds_postrecov() which returned
2651 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
2652 considers this an error and immediately begins cleaning up the
2653 lov, just after starting the mds_lov process
2655 Severity : enhancement
2657 Description: Implement 'lfs df' to report actual free space on per-OST basis
2658 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
2659 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
2660 usage of objects; '-h' to report in human readable format.
2662 ------------------------------------------------------------------------------
2664 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
2671 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
2672 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
2673 at startup during orphan unlinking. Instead, skip buddy update
2674 before setup, as it will be regenerated after recovery is complete.
2679 Description: If an OST is inactive, its locks might reference stale inodes.
2680 Details : lov_change_cbdata() must iterate over all namespaces, even if
2681 they are inactive to clear inode references from the lock.
2683 Severity : enhancement
2684 Frequency : occasional, if non-standard max_dirty_mb used
2686 Description: Client will block write RPCs if not enough grant
2687 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
2688 then the client will block writes while waiting for another RPC
2689 to complete instead of consuming its dirty limit. With change
2690 we get improved performance when max_dirty_mb is small.
2692 Severity : enhancement
2693 Bugzilla : 3389, 6253
2694 Description: Add support for supplementary groups on the MDS.
2695 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
2696 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
2697 lookups for user supplementary groups into a cache.
2701 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
2702 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
2703 for liblustre O_EXCL is enforced by MDS.
2707 Description: readdir never returns NULL in liblustre.
2708 Details : Corrected llu_iop_getdirentries logic, to return offset of next
2709 dentry in struct dirent.
2713 Frequency : liblustre only, depends on application IO pattern
2714 Description: liblustre clients evicted if not contacting servers
2715 Details : Don't put liblustre clients into the ping_evictor list, so
2716 they will not be evicted by the pinger ever.
2718 Severity : enhancement
2720 Description: Add ability to evict clients by NID from MDS.
2721 Details : By echoing "nid:$NID" string into
2722 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
2723 $NID would be instantly evicted from this MDS and from all active
2724 OSTs connected to it.
2728 Description: Do not query file size twice, somewhat slowing stat(2) calls.
2729 Details : lookup_it_finish() used to query file size from OSTs that was not
2734 Description: service threads change working directory to that of init
2735 Details : Starting lustre service threads may pin the working directory
2736 of the parent thread, making that filesystem busy. Threads
2737 now change to the working directory of init to avoid this.
2741 Frequency : during shutdown only
2742 Description: shutdown with a failed MDS or OST can cause unmount to hang
2743 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
2748 Frequency : 2.6 only
2749 Description: chmod/chown may include an extra supplementary group
2750 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
2751 supplementary group and if none is specified this is used.
2754 Bugzilla : 5479 (6816)
2756 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
2757 Details : If lookup is in progress on a file that is unlinked we might try
2758 to revalidate the inode and fail in revalidate after lookup is
2759 complete and ll_file_open() enqueues the open again but
2760 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
2763 Frequency : always, if lconf --abort_recovery used
2765 Description: lconf --abort_recovery fails with 'Operation not supported'
2766 Details : lconf was attempting to abort recovery on the MDT device and not
2769 ------------------------------------------------------------------------------
2771 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
2776 Frequency : rare (only unsupported configurations with a node running as an
2778 Bugzilla : 6514, 5137
2779 Description: Mounting a Lustre file system on a node running as an OST could
2781 Details : OSTs now preallocates memory needed to write out data at
2782 startup, instead of when needed, to avoid having to
2783 allocate memory in possibly low memory situations.
2784 Specifically, if the file system is mounted on on OST,
2785 memory pressure could force it to try to write out data,
2786 which it needed to allocate memory to do. Due to the low
2787 memory, it would be unable to do so and the node would
2788 become unresponsive.
2790 Severity : enhancement
2792 Description: Addition of lconf --service command line option
2793 Details : lconf now accepts a '--service <arg>' option, which is
2794 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
2796 Severity : enhancement
2798 Description: Failover mode is now the default for OSTs.
2799 Details : By default, OSTs will now run in failover mode. To return to
2800 the old behaviour, add '--failout' to the lmc line for OSTs.
2802 Severity : enhancement
2804 Description: Health checks are now provided for MDS and OSTs
2805 Details : Additional detailed health check information on MSD and OSTs
2806 is now provided through the procfs health_check value.
2809 Frequency : occasional, depends on IO load
2811 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
2812 after numerous create/delete cycles
2813 Details : The ext3 inode allocation policy would not allocate new inodes
2814 very well on the OSTs because there are no new directories
2815 being created. Instead we look for groups with free space if
2816 the parent directories are nearly full.
2821 Description: Network or server problems during mount may cause partially
2822 mounted clients instead of returning an error.
2823 Details : The config llog parsing code may overwrite the error return
2824 code during mount error handling, returning success instead
2830 Description: MDS can fail to allocate large reply buffers
2831 Details : After long uptimes the MDS can fail to allocate large reply
2832 buffers (e.g. zconf client mount config records) due to memory
2833 fragmentation or consumption by the buffer cache. Preallocate
2834 some large reply buffers so that these replies can be sent even
2835 under memory pressure.
2839 Frequency : rare (liblustre)
2840 Description: fsx running with liblustre complained that using truncate() to
2841 extend the file doesn't work. This patch corrects that issue.
2842 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
2843 ATTR_SIZE and lsm use in llu_setattr_raw.
2847 Frequency : rare, only 2.6 kernels
2848 Description: Unusual file access patterns on the MDS may result in inode
2849 data being lost in very rare circumstances.
2850 Details : Bad interaction between the ea-in-inode patch and the "no-read"
2851 code in the 2.6 kernel caused the inode and/or EA data not to
2852 be read from disk, causing single-file corruption.
2856 Frequency : rare, only 2.6 filesystems using extents
2857 Description: Heavy concurrent write and delete load may cause data corruption.
2858 Details : It was possible under high-load situations to have an extent
2859 metadata block in the block device cache from a just-unlinked
2860 file overwrite a newly-allocated data block. We now unmap any
2861 metadata buffers that alias just-allocated data blocks.
2865 Frequency : filesystems with default stripe_count larger than 77
2866 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
2867 Details : lconf specifies an inode size of 4096 bytes when the default
2868 stripe_count is larger than 77. This conflicts with the default
2869 inode density of 1 per 4096 bytes. Allocate smaller inodes in
2870 this case to avoid pinning too much memory for large EAs.
2872 ------------------------------------------------------------------------------
2874 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
2879 Frequency : rare (extremely heavy IO load with hundreds of clients)
2881 Description: Client is evicted, gets IO error writing to file
2882 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
2883 caused clients to be evicted for AST timeouts. The fixes in
2884 bug 5192 mean we no longer need to have such short AST timeouts
2885 so ldlm_timeout has been increased.
2888 Frequency : occasional during --force or --failover shutdown under load
2889 Bugzilla : 5949, 4834
2890 Description: Server oops/LBUG if stopped with --force or --failover under load
2891 Details : a collection of import/export refcount and cleanup ordering
2892 issues fixed for safer force cleanup
2895 Frequency : only filesystems larger than 120 OSTs
2896 Bugzilla : 5990, 6223
2897 Description: lfs getstripe would oops on a very large filesystem
2898 Details : lov_getconfig used kfree on vmalloc'd memory
2901 Frequency : only filesystems exporting via NFS to Solaris 10 clients
2902 Bugzilla : 6242, 6243
2903 Description: reading from files that had been truncated to a non-zero size
2904 but never opened returned no data
2905 Details : ll_file_read() reads zeros from no-object files to EOF
2910 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
2911 Details : There's little harm in aborting MDS/OSS recovery and letting it
2912 try again, so I removed the LASSERT and return an error instead.
2914 Severity : enhancement
2916 Description: New debugging infrastructure for tracking down data corruption
2917 Details : The I/O checksum code was replaced to: (a) control it at runtime,
2918 (b) cover more of the client-side code path, and (c) try to narrow
2919 down where problems occurred
2923 Bugzilla : 3819, 4364, 4397, 6313
2924 Description: Racing close and eviction MDS could cause assertion in mds_close
2925 Details : It was possible to get multiple mfd references during close and
2926 client eviction, leading to one thread referencing a freed mfd.
2928 Severity: : enhancement
2929 Bugzilla : 3262, 6359
2930 Description: Attempts to reconnect to servers are now more aggressive.
2931 Details : This builds on the enhanced upcall-less recovery that was added
2932 in 1.4.2. When trying to reconnect to servers, clients will
2933 now try each server in the failover group every 10 seconds. By
2934 default, clients would previously try one server every 25 seconds.
2939 Description: After recovery, certain operations trigger a failed
2940 assertion on a client.
2941 Details : Failing over an mds, using lconf -d --failover, while a
2942 client was doing a readdir() call would cause the client to
2943 LBUG after recovery completed and the readdir() was resent.
2945 Severity : enhancement
2947 Description: Default groups are now added by lconf
2948 Details : You can now run lconf --group <servicename> without having to
2949 manually add groups with lmc.
2952 Frequency : occasional
2954 Description: Nodes with an elan id of 0 trigger a failed assertion
2957 Frequency : always when accessing e.g. tty/console device nodes
2959 Description: tty and some other devices nodes cannot be used on lustre
2960 Details : file's private_data field is used by device data and lustre
2961 values in there got lost. New field was added to struct file to
2962 store fs-specific private data.
2965 Frequency : when exporting Lustre via NFS
2967 Description: NFSD failed occasionally when looking up a path component
2968 Details : NFSD is looking up ".." which was broken in ext3 directories
2969 that had grown large enough to become hashed.
2972 Frequency : Clusters with multiple interfaces not on the same subnet
2974 Description: Nodes will repeatedly try to reconnect to an interface which it
2975 cannot reach and report an error to the log.
2976 Details : Extra peer list entries will be created by lconf with some peers
2977 unreachable. lconf now validates the peer before adding it.
2980 Frequency : Only if a default stripe is set on the filesystem root.
2982 Description: Setting a default stripe on the filesystem root prevented the
2983 filesystem from being remounted.
2984 Details : The client was sending extra request flags in the root getattr
2985 request and did not allocate a reply buffer for the dir EA.
2988 Frequency : occasional, higher if lots of files are accessed by one client
2989 Bugzilla : 6159, 6097
2990 Description: Client trips assertion regarding lsm mismatch/magic
2991 Details : While revalidating inodes the VFS looks up inodes with ifind()
2992 and in rare cases can find an inode that is being freed.
2993 The ll_test_inode() code will free the lsm during ifind()
2994 when it finds an existing inode and then the VFS later attaches
2995 this free lsm to a new inode.
2999 Bugzilla : 6422, 7030
3000 Description: MDS deadlock between mkdir and client eviction
3001 Details : Creating a new file via mkdir or mknod (starting a transaction
3002 and getting the ns lock) can deadlock with client eviction
3003 (gets ns lock and trying to finish a synchronous transaction).
3006 Frequency : occasional
3007 Description: While starting a server, the fsfilt_ext3 module could not be
3009 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
3010 kernels. Previously, lconf would still use the ext3 name
3011 when trying to load modules. Now, it will correctly use
3012 ext3 on 2.4 and ldiskfs on 2.6.
3014 Severity : enhancement
3015 Description: The default stripe count has been changed to 1
3016 Details : The interpretation of the default stripe count (0, to lfs
3017 or lmc) has been changed to mean striping across a single
3018 OST, rather than all available. For general usage we have
3019 found a stripe count of 1 or 2 works best.
3021 Severity : enhancement
3022 Description: Add support for compiling against Cray portals.
3023 Details : Conditional compiling for some areas that are different
3027 Frequency : occasional
3028 Bugzilla : 6409, 6834
3029 Description: Creating files with an explicit stripe count may lead to
3030 a failed assertion on the MDS
3031 Details : If some OSTs are full or unavailable, creating files may
3032 trigger a failed assertion on the MDS. Now, Lustre will
3033 try to use other servers or return an error to the
3037 Frequency : occasional
3039 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
3040 caused lock timeout during readahead (since 1.4.2).
3041 Details : Processes doing readahead might match a lock that hasn't been
3042 granted yet if there are overlapping and conflicting lock
3043 requests. The readahead process waits on ungranted lock
3044 (original lock is CBPENDING), while OST waits for that process
3045 to cancel CBPENDING read lock and eventually evicts client.
3047 Severity : enhancement
3049 Description: Initial enabling of flock support for clients
3050 Details : Implements fcntl advisory locking and file status functions.
3051 This feature is provided as an optional mount flag (default
3052 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
3053 locking are implemented yet, and those that are are not guaranteed
3054 to be completely correct in production environments.
3055 mount -t lustre -o [flock|noflock] ...
3058 Frequency : occasional
3060 Description: OSTs running 2.4 kernels but with extents enabled might trip an
3061 assertion in the ext3 JBD (journaling) layer.
3062 Details : The b_committed_data struct is protected by the big kernel lock
3063 in 2.4 kernels, serializing journal_commit_transaction() and
3064 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
3065 access to this struct. In 2.6 kernels there is finer grained
3066 locking to improve SMP performance of the JBD layer.
3070 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
3075 Description: merge and cleanup kernel patches.
3078 -----------------------------------------------------------------------------
3080 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
3082 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
3083 versions of Lustre. Please update all servers and clients to
3084 version 1.4.2 or later at the same time. You must also run
3085 "lconf --write-conf {config}.xml" on the MDS while it is stopped
3086 to update the configuration logs.
3088 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
3089 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
3090 - swab llog records of type '0' so we get proper header size/idx (5861)
3091 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
3092 - fix rename of one directory over another leaking an inode (5953)
3093 - avoid SetPageDirty on 2.6 (5981)
3094 - don't re-add just-being-destroyed locks to the waiting list (5653)
3095 - when creating new directories, inherit the parent's custom
3096 striping settings if present parent (3048)
3097 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
3098 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
3099 - don't hold client locks on temporary worklist from l_lru (5666)
3100 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
3101 - automatically evict dead clients (5921)
3102 - Update file size properly in create+truncate+fstat case (6196)
3103 - Do not unhash mountpoint dentries, do not allow removal of
3105 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
3106 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
3107 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
3108 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
3109 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
3110 - Correctly handle reads of files with no objects (6243)
3111 - lctl recover will also mark a device active if deactivate used (5933)
3113 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
3114 - allow --write-conf on an MDS with different nettype than client (5619)
3115 - don't write config llogs to MDS for mounts not from that MDS (5617)
3116 - lconf should create multiple TCP connections from a client (5201)
3117 - init scripts are now turned off by default; run chkconfig --on
3118 lustre and chkconfig --on lustrefs to use them
3119 - upcalls are no longer needed for clients to recover to failover
3121 - add --abort-recovery option to lconf to abort recovery on device
3123 - add support for an arbitrary number of OSTs (3026)
3124 - Quota support protocol changes.
3125 - forward compatibility changes to wire structs (6007)
3126 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
3127 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
3128 - improved "lustre status" script
3129 - initialize blocksize for non-regular files (6062)
3130 - added --disable-server and --disable-client configure options (5782)
3131 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
3132 - Vanilla 2.4.29 support
3133 - increase maximum number of obd devices to 520 (6242)
3134 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
3135 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
3136 SLES 9 2.6.5 kernels
3137 - limit stripes per file to 160 (the maximum EA size) (6093)
3139 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3142 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
3143 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
3144 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
3145 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
3146 - small ext3 extents cleanups and fixes (5733)
3147 - improved mballoc code, several small races and bugs fixed (5733, 5638)
3148 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
3149 - avoid needless client->OST connect, fix handle mismatch (5317)
3150 - fix DLM error path that led to out-of-sync client, long delays (5779)
3151 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
3152 - fix several locking issues related to i_size (5492,5624,5654,5672)
3153 - don't move pending lock onto export if it is already evicted (5683)
3154 - fix kernel oops when creating .foo in unlinked directory (5548)
3155 - fix deadlock in obdfilter statistics vs. object create (5811)
3156 - use time_{before,after} to avoid timer jiffies wrap (5882)
3157 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
3158 - Do not leak request if server was not able to process it (5154)
3159 - If mds_open unable to find parent dir, make that negative lookup(5154)
3160 - don't create new directories with extent-mapping (5909, 5936)
3162 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
3163 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
3164 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
3165 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
3166 - support for RHEL4 kernel on i686 (5773)
3167 - provide error messages when incompatible logs are encountered (5898)
3169 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
3170 * version 1.4.0.10 (1.4.1 release candidate 1)
3172 - don't keep a lock reference when lock is not granted (4238)
3173 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3174 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
3175 - drop import inflight refcount on signal_completed_replay error (5255)
3176 - unlock page after async write error during send (3677)
3177 - handle missing objects in filter_preprw_read properly (5265)
3178 - no transno return for symlink open, don't save no-trasno open (3440)
3179 - don't try to complete elan receive that already failed (4012)
3180 - free RPC server reply state on error (5406)
3181 - clean up thread from ptlrpc_start_thread() on error (5160)
3182 - readahead could read extra page into cache that wasn't ejected (5388)
3183 - prevent races in class_attach/setup/cleanup/detach (5260)
3184 - don't dereference de->d_inode after l_dput of de (5458)
3185 - use "int" for stripe value returned from lock_to_stripe (5544)
3186 - mballoc allocation and error-checking fixes in 2.6 (5504)
3187 - block device patches to fix I/O request sizes in 2.6 (5482)
3188 - look up hostnames for IB nals (5602)
3189 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
3190 - don't start multiple acceptors for the same port (5277)
3191 - fix incorrect LASSERT in mds_getattr_name (5635)
3192 - export a proc file for general "ping" checking (5628)
3193 - fix "lfs check" to not block when the MDS is down (5628)
3195 - service request history (4965)
3196 - put {ll,lov,osc}_async_page structs in a single slab (4699)
3197 - create an "evict_client" /proc entry on OSTs, like the MDS has
3198 - fix mount usage message, return errors per mount(8) (5168)
3199 - change grep [] to grep "[]" in tests so they work in more UMLs
3200 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
3201 - remove ancient LOV_MAGIC_V0 EA support (5047)
3202 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
3203 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
3204 - allow readahead allocations to fail when low on memory (5383)
3205 - mmap locking landed again, after considerable improvement (2828)
3206 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
3208 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
3211 - send OST transaction number in read/write reply to free req (4966)
3212 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3213 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3214 - the watchdog thread now runs as interruptible (5246)
3215 - flock/lockf fixes (but it's still disabled, pending 5135)
3216 - don't use EXT3 constants in llite code (5094)
3217 - memory shortage at startup could cause assertion (5176)
3219 - reorganization of lov code
3220 - single portals codebase
3222 - add extents/mballoc support (5025)
3223 - direct I/O reads in the obdfilter (4048)
3224 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
3226 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3229 - send OST transaction number in read/write reply to free req (4966)
3230 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3231 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3232 - the watchdog thread now runs as interruptible (5246)
3233 - handle missing objects in filter_preprw_read properly (5265)
3234 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3235 - drop import inflight refcount on signal_completed_replay error (5255)
3236 - unlock page after async write error during send (3677)
3237 - return original error code on reconstructed replies (3761)
3238 - no transno return for symlink open, don't save no-trasno open (3440)
3240 - add pid to ldlm debugging output (4922)
3241 - bump the watchdog timeouts -- we can't handle 30sec yet
3242 - extra debugging for orphan dentry/inode bug (5259)
3244 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
3247 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
3248 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
3249 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
3250 - fix NULL dereference in /proc/sys/portals/routes (4827)
3251 - allow failed mdc_close() operations to be interrupted (4561)
3252 - stop precreate on OST before MDS would time out on it (4778)
3253 - don't send partial-page writes before EOF from client (4410)
3254 - discard client grant for sub-page writes on large-page clients (4520)
3255 - don't free dentries not owned by NFS code, check generation (4806)
3256 - fix lsm leak if mds_create_objects() fails (4801)
3257 - limit debug_daemon file size, always print CERROR messages (4789)
3258 - use transno after validating reply (3892)
3259 - process timed out requests if import state changes (3754)
3260 - update mtime on OST during writes, return in glimpse (4829)
3261 - add mkfsoptions to LDAP (4679)
3262 - use ->max_readahead method instead of zapping global ra (5039)
3263 - don't interrupt __l_wait_event() during strace
3265 - add software watchdogs to catch hung threads quickly (4941)
3266 - make lustrefs init script start after nfs is mounted
3267 - fix CWARN/ERROR duplication (4930)
3268 - return async write errors to application if possible (2248)
3269 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
3270 - print NAL number in %x format (4645)
3271 - update barely-supported suse-2.4.21-171 series (4842)
3272 - support for sles 9 %post scripts
3273 - support for building 2.6 kernel-source packages
3274 - support for sles km_* packages
3276 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
3279 - ignore -ENOENT errors in osc_destroy (3639)
3280 - notify osc create thread that OSC is being cleaned up (4600)
3281 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
3282 - reconstruct ost_handle() like mds_handle() (4657)
3283 - create a new thread to do import eviction to avoid deadlock (3969)
3284 - let lconf resolve symlinked-to devices (4629)
3285 - don't unlink "objects" from directory with default EA (4554)
3286 - hold socknal file ref over connect in case target is down (4394)
3287 - allow more than 32000 subdirectories in a single directory (3244)
3288 - fix blocks count for O_DIRECT writes (3751)
3289 - OST returns ENOSPC from object create when no space left (4539)
3290 - don't send truncate RPC if file size isn't changing (4410)
3291 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
3292 - bind to privileged port in socknal and tcpnal (3689)
3294 - rate limit CERROR/CWARN console message to avoid overload (4519)
3295 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
3296 - basic mmap support (3918)
3297 - kernel patch series update from b1_4 (4711)
3299 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
3302 - avoid crash during MDS cleanup with OST shut down (2775)
3303 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
3304 - don't use bad inodes on the MDS (3744)
3305 - dynamic object preallocation to improve recovery speed (4236)
3306 - don't hold spinlock over lock dumping or change debug flags (4401)
3307 - don't zero obd_dev when it is force cleaned (3651)
3308 - print grants to console if they go negative (4431)
3309 - "lctl deactivate" will stop automatic recovery attempts (3406)
3310 - look for existing locks in ldlm_handle_enqueue() (3764)
3311 - don't resolve lock handle twice in recovery avoiding race (4401)
3312 - revalidate should check working dir is a directory (4134)
3314 - don't always mark "slow" obdfilter messages as errors (4418)
3316 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
3319 - don't close LustreDB during write_conf until it is done (3860)
3320 - fix typo in lconf for_each_profile (3821)
3321 - allow dumping logs from multiple threads at one time (3820)
3322 - don't allow multiple threads in OSC recovery (3812)
3323 - fix debug_size parameters (3864)
3324 - fix mds_postrecov to initialize import for llog ctxt (3121)
3325 - replace config semaphore with spinlock (3306)
3326 - be sure to send a reply for a CANCEL rpc with bad export (3863)
3327 - don't allow enqueue to complete on a destroyed export (3822)
3328 - down write_lock before checking llog header bitmap (3825)
3329 - recover from lock replay timeout (3764)
3330 - up llog sem before sending rpc (3652)
3331 - reduce ns lock hold times when setting kms (3267)
3332 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
3333 - fix NULL deref and obd_dev leak on setup error (3312)
3334 - replace some LBUG about llog ops with error handling (3841)
3335 - don't match INVALID dentries from d_lookup and spin (3784)
3336 - hold dcache_lock while marking dentries INVALID and hashing (4255)
3337 - fix invalid assertion in ptlrpc_set_wait (3880)
3339 - add libwrap support for the TCP acceptor (3996)
3340 - add /proc/sys/portals/routes for non-root route listing (3994)
3341 - allow setting MDS UUID in .xml (2580)
3342 - print the stack of a process that LBUGs (4228)
3344 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
3347 - don't cleanup request in ll_file_open() on failed MDS open (3430)
3348 - make sure to unset replay flag from failed open requests (3440)
3349 - if default stripe count is 0, use OST count for inode size (3636)
3350 - update parent mtime/ctime on client for create/unlink (2611)
3351 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
3352 - free recovery state on server during a forced cleanup (3571)
3353 - unregister_reply for resent reqs (3063)
3354 - loop back devices mounting and status check on 2.6 (3563)
3355 - fix resource-creation race that can provoke i_size == 0 (3513)
3356 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
3357 - more debugging for page-accounting assertion (3746)
3358 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
3359 - avoid deadlock after precreation failure (3758)
3360 - fix race and lock order deadlock in orphan handling (3450, 3750)
3361 - add validity checks when grabbing inodes from l_ast_data (3599)
3363 - add /proc/.../recovery_status to obdfilter (3428)
3364 - lightweight CDEBUG infrastructure, debug daemon (3668)
3365 - change default OSC RPC parameters to be better on small clusters
3366 - turn off OST read cache for files smaller than 32MB
3367 - install man pages and include them in rpms (3100)
3368 - add new init script for (un)mounting lustre filesystems (2593)
3369 - run chkconfig in %post for init scripts (3701)
3370 - drop scimac NAL (unmaintained)
3372 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
3375 - clean kiobufs before and after use (3485)
3376 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
3377 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
3378 - change init script to fail more clearly if not run as root (1528)
3379 - allow clients to reconnect during replay (1742)
3380 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
3381 - don't do DNS lookups on NIDs too small for IP addresses (3442)
3382 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
3383 - fix cond_resched (3554)
3384 - only evict unfinished clients after recovery (3515)
3385 - allow bulk resend, prevent data loss (3570)
3386 - dynamic ptlrpc request buffer allocation (2102)
3387 - don't allow unlinking open directory if it isn't empty (2904)
3388 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
3389 - remove extraneous obd dereference causing LASSERT failure (3334)
3390 - don't use get_cycles() when creating temp. files on the mds (3156)
3391 - hold i_sem when setting i_size in ll_extent_lock() (3564)
3392 - handle EEXIST for set-stripe, set proper directory name (3336)
3394 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
3395 - fix ksocknal_fmb_callback() error messages (2918)
3397 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
3400 - don't copy lvb into (possibly NULL) reply on error (2983)
3401 - don't deref dentry after dput, don't free lvb on error (2922)
3402 - use the kms to determine writeback rpc length (2947)
3403 - increment oti_logcookies when osc is inactive (2948)
3404 - update client's i_blocks count via lvb messages (2543)
3405 - handle intent open/close of special files properly (1557)
3406 - mount MDS with errors=remount-ro, like obdfilter (2009)
3407 - initialize lock handle to avoid ASSERT on error cleanup (3057)
3408 - don't use cancelling-locks' kms values (2947)
3409 - use highest lock extent for kms, not last one (2925)
3410 - don't dereference ERR_PTR() dentry in error handling path (3107)
3411 - fix thread race in portals_debug_dumplog() (3122)
3412 - create lprocfs device entries at setup instead of at attach (1519)
3413 - common AST error handler, don't evict client on completion race (3145)
3414 - zero nameidata in detach_mnt in 2.6 (3118)
3415 - verify d_inode after revalidate_special is valid in 2.6 (3116)
3416 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
3417 - initialize RPC timeout timer earlier for 2.6 (3219)
3418 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
3419 - print nal/nid for unknown nid (3258)
3420 - additional checks for oscc recovery before doing precreate (3284)
3421 - fix ll_extent_lock() error return code for 64-bit systems (3043)
3422 - don't crash in mdc_close for bad permissions on open (3285)
3423 - zero i_rdev for non-device files (3147)
3424 - clear page->private before handing to FS, better assertion (3119)
3425 - tune the read pipeline (3236)
3426 - fix incorrect decref of invalidated dentry (2350)
3427 - provide read-ahead stats and refine rpc in flight stats (3328)
3428 - don't hold journal transaction open across create RPC (3313)
3429 - update atime on MDS at close time (3265)
3430 - close LDAP connection when recovering to avoid server load (3315)
3431 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
3432 - don't leak open file on MDS after open resend (3325)
3433 - serialize filter_precreate and filter_destroy_precreated (3329)
3434 - loop device shouldn't call sync_dev() for nul device (3092)
3435 - clear page cache after eviction (2766)
3436 - resynchronize MDS->OST in background (2824)
3437 - refuse to mount the same filesystem twice on same mountpoint (3394)
3438 - allow llmount to create routes for mounting behind routers (3320)
3439 - push lock cancellation to blocking thread for glimpse ASTs (3409)
3440 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
3441 - fix rare problem with rename on htree directories (3417)
3443 - allow default OST striping configuration per directory (1414)
3444 - fix compilation for qswnal for 2.6 kernels (3125)
3445 - increase maximum number of MDS request buffers for large systems
3446 - change liblustreapi to be useful for external progs like lfsck (3098)
3447 - increase local configuration timeout for slow disks (3353)
3448 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
3450 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3453 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
3454 - don't overwrite extent policy data in reply if lock was blocked (2901)
3455 - drop filter export grants atomically with removal from device (2663)
3456 - del obd_self_export from work_list in class_disconnect_exports (2908)
3457 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
3458 - swab reply message in mdc_close, other PPC fixes (2464)
3459 - fix destroying of named logs (2325)
3460 - overwrite old logs when running lconf --write_conf (2264)
3461 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
3462 - fix race in target_handle_connect (2898)
3463 - mds_reint_create() should take same inode create lock (2926)
3464 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
3465 - don't close files for self_export to avoid uninitialized obd (2936)
3466 - allow MDS with the same name as client node (2939)
3467 - hold dentry reference for closed log files for unlink (2325)
3468 - reserve space for all logs during transactions (2059)
3469 - don't evict page beyond end of stripe extent (2925)
3470 - don't oops on a deleted current working directory (2399)
3471 - handle hard links to targets without a parent properly (2517)
3472 - don't dereference NULL lock when racing during eviction (2867)
3473 - don't grow lock extents when lots of conflicting locks (2919)
3475 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
3478 - account for cache space usage on clients to avoid data loss (974)
3479 - lfsck support in lustre kernel code (2349)
3480 - reduce journal credits needed for BRW writes (2370)
3481 - orphan handling to avoid losing space on client/server crashes
3482 - ptlrpcd can be blocked, stopping ALL progress (2477)
3483 - use lock value blocks to assist in proper KMS, faster stat (1021)
3484 - takes i_sem instead of DLM locks internally on obdfilter (2720)
3485 - recovery for initial connections (2355)
3486 - fixes for mds_cleanup_orphans (1934)
3487 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
3488 - block all file creations until orphan recovery completes (1901)
3489 - client remove rq_connection from request struct (2423)
3490 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
3491 - recovery timer race (2670)
3492 - mdc_close recovey bug (2532)
3493 - ptlrpc cleanup bug (2710)
3494 - mds timeout on local locks (2588)
3495 - namespace lock held during RPCs (2431)
3496 - handle interrupted sync write properly (2503)
3497 - don't try to handle a message that hasn't been replied to (2699)
3498 - client assert failure during cleanup after abort recovery (2701)
3499 - leak mdc device after failed mount (2712)
3500 - ptlrpc_check_set allows timedout requests to complete (2714)
3501 - wait for inflight reqs when ptlrpcd finishes (2710)
3502 - make sure unregistered services are removed from the srv_list
3503 - reset bulk XID's when resending them (caught by 1138 test)
3504 - unregister_bulk after timeout
3505 - fix lconf error (2694)
3506 - handle write after unfinished setstripe, stripe-only getstripe (2388)
3507 - readahead locks pages, leaves pending causing memory pressure (2673)
3508 - increase OST request buffers to 4096 on large machines (2729)
3509 - fix up permission of existing directories in simple_mkdir (2661)
3510 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
3511 - don't assign transno to errored transactions (2742)
3512 - don't delete objects on OST if given a bogus objid from MDS (2751)
3513 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
3514 - if rq_no_resend, then timeout request after recovery (2432)
3515 - fix MDS llog_logid record size, 64-bit array alignment (2733)
3516 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
3517 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
3518 - MDS recovery shouldn't delete objects that it has given out (2730)
3519 - if enqueue arrives after completion, don't clobber LVB (2819)
3520 - don't unlock pages twice when trigger_group_io returns error (2814)
3521 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
3522 - don't write pages to disk if there was an error (1450)
3523 - don't ping imports that have recovery disabled (2676)
3524 - take buffered bytes into account when balancing socknal conn (2817)
3525 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
3526 - reconnect unlink llog connection after MDS reconnects to OST (2816)
3527 - remove little-endian swabbing of llog records (1987)
3528 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
3529 - retry reposting request buffers if they fail (1191)
3530 - grow extent at grant time to avoid granting a revoked lock (2809)
3531 - lock revoke doesn't evict page if covered by a second lock (2765)
3532 - disable VM readahead to avoid reading outside lock extents (2805)
3534 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
3535 - updated kernel patches for hp-2.4.20 kernel (2681)
3537 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
3540 - fix truncated write corruption (2366)
3541 - fix for failed assertion in iopen_connect_dentry (1792,2517)
3543 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
3544 - ensure len(uuid) < 37 in lmc (1171)
3545 - fix ia64 OOPS in llog_test (2255)
3546 - zero end of page at obdfilter for partial page writes (2648)
3547 - don't leave stale dentries around after renames (bug 2428)
3548 - fix timeouts when evicting a client with a single lock held (2642)
3549 - set deadline for the initial HELLO message to drain (2634)
3550 - print out dotted-quad IP addresses in the socknal (2302)
3552 - additional debugging for MDS client eviction problem (2443)
3553 - fix mkfsoptions support for osts (2603, 2604)
3555 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
3558 - add series for the vanilla 2.6.0 kernel
3559 - add series for the vanilla 2.4.24 kernel
3560 - add series for a cray x86/64 UL kernel drop
3561 - fix xattr patches for the vanilla 2.4.19 series
3563 - generate true UUIDs in lmc (1171)
3564 - have portals stack dumping break in UML (2466)
3565 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
3566 - allocate with _NOFS in ldlm to avoid deadlock (1933)
3567 - wake callback waiting threads on client eviction (2460)
3568 - Add --ptldebug and --subsystem to lmc (1719)
3569 - update assertion to allow safe interrupt allocation
3570 - set rq_no_resend for cancel requests (2432)
3571 - recalculate ptlrpcd timeout after resend (2494)
3572 - call vfs_rmdir when removing pending directories (2368)
3573 - fix renaming a file to itself (2429)
3574 - lmc creates a default one-stripe lov (2454)
3575 - expand procfs space to handle large clusters (2326)
3576 - increase UML stack to avoid overflow
3577 - update lconf's list of debug and subsystem masks
3578 - fix lfs find --obd (2510)
3579 - /proc tunable for disabling filter read caching (2591)
3580 - stop rpm packages from altering slapd.conf (2301)
3581 - disable nagle in the socknal under 0conf (2578)
3582 - choose mds inode size based on stripe count (2572)
3583 - fix kernel-source rpm problems (2516)
3585 - add --disable-doc to avoid pdf generation (2421)
3586 - update documentation, tests, type-os, comments
3587 - avoid format warnings on ia64
3588 - remove the TOE NAL
3589 - tiny code cleanups by removing unused fields
3591 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
3594 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
3595 - remove the most blatant lies from BUILDING file (2371)
3596 - change default debug level to reasonable production setting
3597 - reduce client side cache size to reduce cache flush time
3598 - reduce max RPCs in flight to avoid unnecessary file fragmentation
3599 - make TCP zerocopy and pinger support enabled by default (2476)
3600 - sync writes completed after process exits caused crashes (2319)
3601 - maintain correct mount count on the MDS (2356)
3602 - backout 1557, because 2316 wasn't really fixed
3603 - better file I/O statistics gathering in /proc
3604 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
3605 - another kernel patch to fix zero-copy TCP function export
3606 - don't take duplicate lock when processing re-sent getattr (2420)
3607 - lctl uses obd_self_export instead of creating new conn (2353)
3608 - MDS/OST recovery case which requires object creation asserted (2425)
3609 - move lfs from /usr/sbin to /usr/bin in packages
3610 - fix race between mds_client_add and mds_client_free (2417)
3611 - use kmalloc instead of slabs in portals (2430)
3612 - don't create duplicate records when a failover MDS is present (2442)
3613 - remove unnecessary mount age check (2332)
3614 - don't remove directory inodes from locks prematurely (2451)
3615 - don't break if MDS service name is the same as hostname (2103)
3616 - fix races in client write RPC generation when cache full (2482)
3618 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
3621 - remove now-unused request->rq_obd (278)
3622 - if an allocation fails, print out how much memory we've used (1933)
3623 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
3624 - add the "configurable stack size" patch to most series files (1256)
3625 - ability to write large log records, for 100+ OST configs (2306)
3626 - fix NULL deref when filter_prep fails (2314)
3627 - fix operator precedence error in filter_sync
3628 - dynamic allocation of socknal TX descriptors (2315)
3629 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
3630 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
3631 - ensure that CWARN messages in Portals always get to the syslog
3632 - __init/__exit are not for prototype decls (ldlm_init/exit)
3633 - x86-64 compile warning fixes
3634 - fix gateway LMC keyword conflict (2318)
3635 - fix MDS lock inversions in getattr/reint paths (1844)
3636 - fix a rare lock re-ordering bug, which caused deadlock (2322)
3637 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
3638 - DLM race condition prevented some lock evictions (2328)
3639 - ENOMEM detection and retry on socknal sends (2230)
3640 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
3641 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
3642 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
3643 - better error messages when a client is rejected during recovery (1505)
3644 - avoid cancelling locks which were never granted, after failure (2330)
3645 - fix i_sem/journal inversion in mds_client_add (2333)
3646 - fix truncate/getattr lock cycle deadlock (2334)
3647 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
3648 - fix two rare exit paths which could leak an l_lock() ref (2321)
3649 - fencepost error in MDS/OST orphan recovery (2226)
3650 - make log record alignment 8 bytes (1988)
3651 - lstripe now fails when requested offset > ost_count (2237)
3652 - ensure that all kernel series have a complete list.h (1607)
3653 - fix crashes in special-file operations (2316)
3654 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
3656 - allow configurable automake binary, for testing new versions
3657 - small update to the lfs documentation
3659 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
3661 * fix negative export reference count in fsfilt_sync (2312)
3663 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
3664 * release candidate 0.9.1
3666 - orphans are moved into the PENDING directory for possible recovery
3667 - replayed opens now open by fid for orphan/rename safety (1042)
3668 - last close of an orphan inode generates a transno (683)
3669 - chdir() and mount() now pin the directory entry (1020)
3670 - avoid CERROR in normal ll_setattr_raw() error case (1500)
3671 - discard very old requests without processing them (1502)
3672 - remove some common, well-understood CERRORs (1505)
3673 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
3674 - clear "grant" flags in OST replies until OST grant code lands (1644)
3675 - fix read performance by not clobbering i_blksize on client (1598)
3676 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
3677 - make LRU size a /proc tunable, clears locks when reduced (707)
3678 - fix some lprocfs rot that prevented ptlbd from loading (1732)
3679 - server locks take references on exports now (1558)
3680 - build fixes for 2.4.20-rh trees (1663)
3681 - return an error from lov_create if all OSCs are inactive (1751)
3682 - fix import levels when a reconnect happens without a timeout (1597)
3683 - exit early from mds_open if we get a lookup error (1749)
3684 - partial page read at EOF wouldn't wait for disk before sending (1642)
3685 - avoid NULL deref in obdfilter when reading page past EOF (1592)
3686 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
3687 - fix LBUG in ll_it_open_error with rc = -2 (1861)
3688 - write/truncate lock inversion (1639)
3689 - Don't auto-load obdclass, portals modules during cleanup (1495)
3690 - fix timestamps from jumping to "now" (1763)
3691 - extra journal assertions (1648)
3692 - add an extra multiunlink test (1771)
3693 - fix read_record/write_record API (1776)
3694 - fix leak of offset_extent, possible incorrect i_size later (1772)
3695 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
3696 - Debugging for the kqswnal_get_idle_tx problems (1820)
3697 - Allow recovery to be attempted multiple times (1536)
3698 - Write out MDS last_rcvd file after it is first created (1600)
3699 - Fix tx_descriptor leak in failed transmit situations (1827)
3700 - ext3 journaling fixes for assertion failure after IO error (1871)
3701 - class_export_put() on freed export after completion AST error (1896)
3702 - Fix revalidate looping in VFS (1322)
3703 - Don't access a freed export during MDS_REINT timeout (1521)
3704 - Add open-unlink recovery support on the MDS (1673,1764)
3705 - Return an error if no MDS data was read from last_rcvd (1946)
3706 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
3707 - Don't setup a disk device that doesn't match exported UUID (317)
3708 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
3709 - avoid committing NULL handle in force close
3710 - local.sh is now a one-stripe LOV configuration
3711 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
3712 - fix ext3 htree duplicate directory entry corruption (1516)
3713 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
3714 - update to new LOV EA format (2097)
3715 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
3717 2003-06-15 Phil Schwan <phil@clusterfs.com>
3720 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
3721 - per-import/export recovery handling (958, 931, 959)
3722 - multiple last-rcvd slots, for serving multiple FSes (949)
3723 - connections are again shared between multiple imp/exports (963, 964)
3724 - "umount -f" would hang if any requests needed to be sent (393, 978)
3725 - avoid pinning large req buffer by copying for queued messages (989)
3726 - add "uuid" to "lctl device" command to help upcalls (991)
3727 - "open" RPCs with transnos would confuse recovery counters (1037)
3728 - do proper endian conversion of all wire messages (288, 340, 891)
3729 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
3730 - call waiting locks callback from LDLM recovery thread (1127, 1151)
3731 - fix ptlrpc_connection leak in target_handle_connect (1174)
3732 - fix import refcounting bug in OST and MDS cleanup (1134)
3733 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
3734 - fix very unlikely obd_types race condition (501)
3735 - remove osc_open hack for echo_client (1187)
3736 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
3737 - a failure in read_inode2 leads to deadlock (1139)
3738 - cancel ack-locks as soon as transaction is committed (1072)
3739 - fix major leaks and crashes in the bulk I/O path (937, 1057)
3740 - make sure to commitrw after any preprw to avoid deadlock (1162)
3741 - failing to execute a file in a lustre FS would lock inode (1203)
3742 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
3743 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
3744 - obd_uuid2tgt would walk off the end of the list (1255)
3745 - on IA64 the osc would give portals incorrect bulk size (1258)
3746 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
3747 - fix lock inversion caused by new llite matching code (1282)
3748 - limit the number of dirty pages on a client to 10MB (1286)
3749 - timed out locks were not being corrected cancelled (1289)
3750 - fix O_DIRECT above 4GB on IA-32 (1292)
3751 * major user-visible changes
3752 - fail out/fail over policy now controlled by the upcall (993)
3754 - add OBD_PING to check server availability and failure (954)
3755 - lustre messages are now sent in sending host order (288, 340, 891)
3756 - add eadatalen to MDS getattr reply (340)
3757 - OST read replies may contain second buffer, with per-page status (593)
3759 2003-03-11 Phil Schwan <phil@clusterfs.com>
3762 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
3763 - failed open()s could cause deadlock; fixed (867, 869)
3764 - stop cancelling OST locks when files are closed (481)
3765 - overlapping XID spaces caused network corruption (851, 853)
3766 - fix unsafe fsfilt counter arithmetic; change to atomic_t
3767 - setattr_raw added, to do single-RPC, server-side setattrs
3768 - lmc/lconf syntax change for OST UUIDs
3769 - fix crashy race condition between ptlrpc_free_req and osc_close
3770 - don't use request in mdc_enqueue if we hit a timeout (889)
3771 - don't set the inode i_size for regular files from the MDS (896)
3772 - handle out of order completion AST (842)
3773 - don't LBUG if a lock request times out after receiving AST (913)
3774 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
3775 - if a bad lock AST arrives, send an error instead of dropping entirely
3776 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
3777 - fix leak in bulk IO when only partially completed (899, 900, 926)
3778 - fix O_DIRECT for ia64 (55)
3779 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
3780 - C-z after timeout could hang a process forever; fixed (977)
3782 - client-side I/O cache (678, 924, 929, 941, 970)
3784 - READPAGE and SETATTRs which don't take server-side locks get
3787 2003-02-11 Phil Schwan <phil@clusterfs.com>
3790 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
3791 - Fix fsfilt_extN_readpage() to read a full page of directory
3792 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
3793 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
3794 - Fix imbalanced LOV object allocation and out-of-bound access (469)
3795 - Most intent operations were removed, in favour of a new RPC mode
3796 that does a single RPC to the server and bypasses most of the VFS
3797 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
3798 - Aggressively cancel local locks on DLM servers
3799 - mds_reint_unlink sends EA to the client if it's the last nlink.
3800 client uses that EA to unlink OST objects.
3801 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
3802 - recursive symlinks were fixed (439)
3803 - fixed NULL deref in DEBUG_REQ
3804 - filter_update_lastobjid no longer calls sync, which annoyed extN
3805 - fixed multi-client small-writes to a single file problem (445)
3806 - fixed mtime updates during file writes (607)
3807 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
3808 - fixed bug in obd_brw_read/write() (under guise of testing 367)
3809 - fixed Linux OST size reporting problem (444, 656)
3810 - OST now updates object mtime with writes or setattr (607, 619)
3811 - client verifies file size before zeroing page past EOF (445)
3812 - OST now writes last allocated objid to disk with allocation (108)
3813 - LOV on echo now works (409)
3815 - mds_reint_unlink sends a new buffer, with the EA included. this
3816 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
3817 set if a regular file was being unlinked, and it was the last link
3818 - use PtlGet from the target for bulk writes (315)
3819 - OST now updates object mtime with writes or setattr (607, 619)
3820 - LDLM now has a grant-time callback to revalidate locked items, if
3822 - Many MDS operations were reorganized to combat race conditions
3824 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
3825 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
3827 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
3830 - Fully reactivate OST imports after reconnection (512, others)
3831 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
3832 - More graceful error handling for truncating on dead OST (515)
3833 - Don't error out unless we're actually accessing dead stripes (474)
3834 - Fix garbage sizes when stripes are missing (410)
3835 - LRU counters were broken, causing constant lock purge (433, 432)
3836 - garbage on read from stripes with failed OSTs (441)
3837 - mark OSCs as active before reconnecting during recovery (438)
3838 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
3839 - lfind did not preserve OST order in output (443)
3840 - symlinks cause hung clients, incorrect data (439)
3841 - stop dereferencing request after dropping refcount (457)
3842 - don't LASSERT(spin_is_locked) on non-SMP (455)
3843 - fixes for many rename() bugs
3844 - fstat didn't correctly synchronize attributes (399)
3845 - server must handle lock cancellation during blocking AST prep (487)
3846 - bulk descriptors were free()d too soon (511)
3847 - fix paths in lconf, which would load incorrect modules (451, 507)
3848 - fix confusing lconf 'host not found' error message (386)
3849 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
3850 - fix race condition in mdc_blocking_ast() for inode access (526)
3851 - fix lov_unpackmd() unpacking wrong number of stripes (537)
3852 - fix lov_set_osc_active() marking wrong OSC inactive (440)
3853 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
3854 - fix multiple writes of stripe MD to MDS (358, maybe 519)
3855 - fix lstripe in several ways (kernel side) (527)
3856 - fix request leak in ldlm_cli_enqueue (262)
3857 - incorrect OSC was marked inactive after OST failure
3858 - call mds_fs_cleanup before unmounting filesystem (524)
3859 - fix races between taking ns_lock and ldlm_lock_change_resource
3860 - fix races updating LOV export open file list
3861 - fix lov_enqueue error path, avoid decref-ing bad lock handle
3862 - fix recovery NULL deref in ldlm_cli_cancel_unused
3863 - fix some DLM races by using new hash table for lock handles (419)
3864 - permit the client to specify desired inodes, at replay
3865 - duplicate requests when we queue them for replay reintegration
3866 - fix last_rcvd offset calculation
3867 - sync after each recovered transaction, so we always make progress
3868 - never, not always, ERESTART requests without transnos
3869 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
3871 - skip replay if the MDS says that the client is already connected
3872 - don't check for a recovery-enabled export to match lctl's UUID
3873 - don't INC_USE_COUNT for phantom exports
3874 - don't crash when cleaning up phantom exports (567)
3875 - don't double-finish or set replay data for errored mdc_open requests
3876 - abort requests when they time out, so we don't get old replies
3877 - send/receive replies for AST messages again
3878 - if the client says that it doesn't have the lock, cancel it on the
3880 - if we timeout during I/O, don't try to cancel an in-use lock; instead
3881 mark it as destroyed, it will all work out when decref is called
3882 - fix module use counts (22, 581)
3884 - ASTs now expect a reply (server cancels lock on error reply)
3886 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
3889 - fix many simultaneous client startup (392)
3890 - fix dentry->d_it clobbering
3891 - credentials weren't being shipped for readdir/getattr operations
3892 - remove invalid assertions triggered during some concurrent MD
3894 - proper Lustre versions added (336, 389)
3895 - fix memory leak for create error case (398)
3896 - fix LOV locking bug that would get cli/srv out of sync
3897 - fix echo client over LOV (409)
3898 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
3899 - fix double-O_EXCL intent crash (424)
3900 - avoid sending multiple lock CANCELs (352)
3902 - MDS can do multi-client recovery (modulo bugs in new code)
3904 - many updates, edits, cleanups
3906 2002-11-18 Phil Schwan <phil@clusterfs.com>
3909 - fix null d_it dereference (346)
3910 - fix full OST/dbench hang (333)
3911 - fix permission problem with file removal (286)
3912 - fix removal of OSCs from LOV when they fail
3913 - fix NULL deref during bulk timeout (214)
3914 - fix problems related to multiple filesystems on one MDS (241)
3915 - fixed serious subtle metadata locking bugs
3916 - free locks on clients when inodes are removed due to memory
3918 - fix inode pointer in lock data (285)
3919 - partial support for multiple MDS on a single host (241)
3920 - data locks weren't cancelled at clear_inode time (290, 311)
3921 - intent locks could lead to unbounded lock growth (205)
3922 - added a maximum lock count, an LRU list, and a flusher
3923 - fix multiple rename (365)
3924 - properly abstracted the echo client
3925 - OSC locked 1 byte too many; fixed
3926 - rewrote brw callback code:
3927 - fixed recovery bugs related to LOVs (306)
3928 - fixed too-many-pages-in-one-write crash (191)
3929 - fixed (again) crash in sync_io_timeout (214)
3930 - probably fixed callback-related race (385)
3932 - Add capability to MDS protocol
3933 - LDLM cancellations and callbacks on different portals
3935 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3938 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3939 - defer open object destruction to close time (601981, 138)
3940 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3941 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3942 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3943 - don't call obd_setattr in ll_file_release for destroyed objects
3944 * protocol change to lustre_msg: move |version| and add |flags|
3945 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3946 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3947 * added replay of create, unlink, link and rename operations during
3948 MDS failover; recovery should be much more robust now
3949 * remove failed OSCs from LOVs (only lov_create uses this so far)
3950 * the lustre-HOWTO was brought (more) up to date (582544)
3952 2002-10-23 Phil Schwan <phil@clusterfs.com>
3955 - in-use dentries weren't being reused properly (617851)
3956 - prevent multiple LDLM setup (599178)
3957 - fix LOV size calculations for truncate (617853)
3958 - fix client handling of MDS intent errors (POSIX)
3959 - fix permission bug in lovstripe.c test (624321)
3960 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3961 - truncate past end of file could corrupt data
3962 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3963 - a race in recovery could return ETIMEDOUT to apps (623947)
3964 - building outside the source directory was fixed
3965 * the lustre-HOWTO was brought (more) up to date (582544)
3966 * major progress was made on recovery functionality
3968 2002-10-10 Phil Schwan <phil@clusterfs.com>
3971 - recovery deadlock fix
3972 - rm -rf causes LBUG fix (617817)
3973 - file open by multiple tasks fix (618962)
3974 - directory permissions bugs (602707 and 620007)
3975 - journal_stop fixed with locking (611313)
3976 - O_APPEND failures resolved (618273, perhaps 614459)
3977 - lconf PATH fix (619770)
3978 - IA64 build fix (621450)
3979 - RPC buffer sizes scale with amount of memory
3981 2002-10-01 Phil Schwan <phil@clusterfs.com>
3984 - locks would be cancelled without throwing away data pages,
3985 resulting in inconsistent data (605627)
3986 - inode attributes were not always being refreshed (605627, 612449)
3987 - lconf now continues to cleanup after lctl reports an error
3988 - MDS now enforces user permissions (602707)
3989 - lprocfs cleanup fixed, but not yet enabled (614157)
3990 - fixed infinite server hang, should a client not respond to an AST
3991 - avoid going into recovery if user calls readlink() with a buffer
3992 that's too small (613941)
3993 - AST RPCs no longer require replies (614867) -- this may be changed
3994 - don't crash server if client sends an IOV that's too big (611336)
3995 - fixed lock conversion deadlock (611892)
3996 - fixed the following of symlinks (614622)
3997 * recovery: the server can remove locks from a client that dies, other
3998 clients can make progress
3999 * more extN patch fixes
4000 * compile-time configurable ptlrpc buffer allocations
4002 - collaborative read cache document
4003 - Lustre Lite Performance CDR document-in-progress
4005 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4008 - fix typo in patch-2.4.18
4010 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4013 - clear ptlrpc request each time in handle_incoming_request()
4014 - unlink of files now destroys the object on the OST
4016 2002-09-19 Peter Braam <braam@clusterfs.com>
4018 * add hard link support
4019 * change obdfile creation method
4020 * kernel patch changed
4022 2002-09-19 Peter Braam <braam@clusterfs.com>
4025 - stack overflow bug in extN fixed
4027 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
4029 * documentation updates
4030 - add man pages for config tools
4031 - update tests/README to describe testing with new config tools
4032 - finish metadata API descriptions
4033 * bug fixes and cleanups
4034 - statfs workaround for 16TB limit
4035 - LOV stripe allocation improved, can stripe on subset of OSTs
4036 - LOV file size/IO offset was wrong for files > 4GB in size
4037 - object EA data was being dropped, caused files to be unreadable
4038 - memory overflow with non-LOV OST caused memory corruption
4039 - fixed regression tests to work with new config tools, obdfilter
4040 - fixed bug when directory size became larger than 1 block
4041 - fixed bug (for single client case) when PWD was deleted
4042 - invalidate local directory pages when doing intent-based ops
4043 - avoid LDLM oops when lock callback contained bad data
4045 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
4047 * documentation updates
4048 * bug fixes and cleanups
4049 - configuration tools
4052 - 64-bit compile warnings
4053 - 64-bit internal statfs data
4055 * test_brw on persistent OST devices
4057 * lprocfs (disabled)
4059 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
4061 * documentation updates
4062 * bug fixes and cleanups
4063 * configuration tools
4065 2002-08-30 Peter J. Braam <braam@clusterfs.com>
4068 * many small fixes to 0_5_4
4069 * io/network handling
4070 * thinkos in MDS operations
4072 2002-08-24 Peter J. Braam <braam@clusterfs.com>
4075 * crucial basic fixes to 0.5.3
4076 * IOR, Iozone work over Elan
4079 2002-08-07 Phil Schwan <phil@clusterfs.com>
4080 * version 0_5_3, our first alpha
4081 * we use the new Portals iovs
4082 * documentation updates
4083 * bug fixes and cleanups
4084 * small changes in the DLM wire protocol
4086 2002-07-25 Peter J. Braam <braam@clusterfs.com>
4087 * version 0_5_1 with some initial stability,
4088 * locking on MD and file I/O.
4089 * documentation updates
4090 * several bug fixes since 0.5.0
4091 * small changes in wire protocol
4093 2002-07-18 Phil Schwan <phil@clusterfs.com>
4095 * delivered as Lustre Light Alpha
4096 * fixed a crash after handling invalid MDS requests
4097 * fixed directory pages for architectures with non-4k pages sizes
4099 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
4100 * release version v0_4_4
4101 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
4103 * Fixes a number of interruption problems with OST operations.
4104 * Update documentation for portals header changes
4105 * Move all wire protocol structs/defines to lustre_idl.h
4106 * Fixes symlink length bug.
4107 * Add tcpdump to repository.
4109 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
4110 * release version v0_4_3
4111 * Fixes statfs for inodes on extN.
4112 * Fixes bug in runtests which would delete /etc/hosts.
4113 * Use 64-bit object IDs wherever possible (not into VFS though)
4114 Remove ost_get_info, which is unused by lustre, and out of date.
4116 2002-07-03 Peter Braam <braam@clusterfs.com>
4117 * release version v0_4_2 Fixes a lookup error (type not passed)
4118 * move forward to head of Portals
4119 * move forward to latest Lustre kernel
4121 2002-06-25 Peter Braam <braam@clusterfs.com>
4122 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob