5 2.6.16.46-0.14 (SLES 10),
6 2.6.18-8.1.8.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.
17 Description: Fix errors in lfs documentation
18 Details : Fixes man pages
22 Description: don't use GFP_* in generic Lustre code.
23 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
27 Description: obdclass is limited by single OBD_ALLOC(idarray)
28 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
32 Description: warnings with build patchless client with vanila 2.6.19 and up
33 Details : change old ctl_table style and replace ctl_table/ctl_table_header
34 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
38 Frequency : Only for SLES
39 Description: sanity_quota fail test_1
40 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
41 file, which makes TSTID[2] inunique.
45 Frequency : Only for SLES9
46 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
47 Details : Update target/ChangeLog/which_patch .
51 Frequency : Only for test_10 in sanity-quota.sh
52 Description: a bug in quota test code
53 Details : checking a test flag in a wrong place
57 Frequency : Only for test_13 in sanity-quota.sh
58 Description: a bug in quota test script
59 Details : shouldn't check overfull allocated quota
63 Description: jbd statistics
64 Details : Port older jbd statistics patch for sles10
66 Severity : enhancement
68 Description: Add printing inode info into message about error in writepage.
73 Description: reply_lock_interpret crash due to race with it and lock cancel.
74 Details : Do not replay locks that are being cancelled. Do not reference
75 locks by their address during replay, just by their handle.
79 Frequency : When flocks are used.
80 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
81 Details : Flock locks might destroy just granted lock if it could be merged
82 with another existing flock, this is done in completion handler,
83 so teach ldlm_cli_enquque_fini that this is a valid case for
89 Description: Oops in read and write path when failing to allocate lock.
90 Details : Check if lock allocation failed and return error back.
94 Description: lstripe command fails for valid OST index
95 Details : The stripe offset is compared to lov->desc.ld_tgt_count
96 instead of lov->desc.ld_active_tgt_count.
100 Description: sanity.sh failed test 103
101 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
106 Description: df doesn't work properly if diskfs blocksize != 4K
107 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
111 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
112 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
116 Description: obd_health_check_timeout too short
117 Details : set obd_health_check_timeout as 1.5x of obd_timeout
121 Description: llapi_file_create() does not allow some changes
122 Details : add llapi_file_open() that allows specifying the mode and
123 open flags, and also returns an open file handle.
127 Description: merge and cleanup kernel patches.
128 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
132 Description: Add journal checksum support.(Kernel part)
133 Details : The journal checksum feature adds two new flags i.e
134 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
135 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
136 indicates that the commit block contains the checksum for
137 the blocks described by the descriptor blocks. Now commit
138 record can be sent to disk without waiting for descriptor
139 blocks to be written to disk. This behavior is controlled
140 using JBD2_FEATURE_ASYNC_COMMIT flag.
144 Description: OSS needs mutliple precreate threads
145 Details : Add ability to start more than one create thread per OSS.
149 Description: Sanity.sh test_65k failed: setstripe should have succeeded
150 Details : execute lfs setstripe on client
154 Description: mds_obd_create error creating tmp object
155 Details : When the user sets quota on root, llog will be affected and can't
156 create files and write files.
159 Frequency : Always on ia64 patchless client, and possibly others.
161 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
162 Details : This allows the patchless client to be loaded on architectures
167 Description: RedHat Update kernel for RHEL5
168 Details : Add the kernel config file for RHEL5.
172 Description: RedHat Update kernel for RHEL5
173 Details : Modify the kernel config file more closer RHEL5.
177 Description: Build failure against Centos5 (RHEL5)
178 Details : Define PAGE_SIZE when it isn't present.
182 Description: test_7 on sanity-quota.sh can't be used on separate machines
183 Details : add facet to handle it
187 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
188 Details : with NFS, the anon dentry's parent was set to itself in
189 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
190 corresponding dentry other than use rec->ur_name.
192 Severity : enhancement
194 Description: lfs setstripe enhancement
195 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
199 Description: testing performance impact of enabling checksumming
200 Details : enable checksum by default, allow --disable-checksum
201 configure option and "-o nochecksum" mount option
205 Description: lustre support for RHEL5
206 Details : Add support for RHEL5.
210 Description: Client eviction due to failover config
211 Details : after a connection loss, the lustre client should attempt to
212 reconnect to the last active server first before trying the
213 other potential connections.
217 Description: when mds and osts use different quota unit(32bit and 64bit),
218 quota will be released repeatly.
219 Details : void sending multiple quota reqs to mds, which will keep the
220 status between the reqs.
224 Description: osts not allocated evenly to files
225 Details : change the condition to increase offset_idx
229 Description: Tune the kernel for good SCSI performance.
230 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
231 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
236 Description: rewrite ext2-derived code in obdclass/uuid.c
237 Details : rewrite inherited code (uuid parsing code from ext2 utils)
238 from scratch preserving functionality.
242 Description: "lfs find -obd UUID" prints directories
243 Details : "lfs find -obd UUID" will return all directory names instead
244 of just file names. It is incorrect because the directories
245 do not reside on the OSTs.
247 --------------------------------------------------------------------------------
249 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
251 * Support for kernels:
252 2.6.5-7.283 (SLES 9),
253 2.6.9-55.EL (RHEL 4),
254 2.6.16.46-0.14 (SLES 10),
255 2.6.18.8 vanilla (kernel.org)
256 * Client support for unpatched kernels:
257 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
258 2.6.16 - 2.6.22 vanilla (kernel.org)
259 * Due to recently discovered recovery problems, we do not recommend
260 using patchless RHEL 4 clients with this or any earlier release.
261 * Recommended e2fsprogs version: 1.39.cfs8
262 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
263 * Starting with this release, the ldiskfs backing filesystem required
264 by Lustre is now in its own package, lustre-ldiskfs. This package
265 should be installed. It is versioned separately from Lustre and
266 may be released separately in future.
270 Description: block reactivating mgc import until all deactivates complete
271 Details : Fix race when failing back MDT/MGS to itself (testing)
273 Severity : enhancement
275 Description: add optional extra BUILD_VERSION info
276 Details : add a new environment variable (namely LUSTRE_VERS) which allows
277 to override the lustre version.
280 Frequency : 2.6.18 servers only
282 Description: ll_kern_mount() doesn't release the module reference
283 Details : The ldiskfs module reference count never drops down to 0
284 because ll_kern_mount() doesn't release the module reference.
289 Description: server LBUG when using old ost_num_threads parameter
290 Details : Accept the old ost_num_threads parameter but warn that it
291 is deprecated, and fix an off-by-one error that caused an LBUG.
296 Description: Transient SCSI error results in persistent IO issue
297 Details : iobuf->dr_error is not reinitialized to 0 between two
301 Frequency : sometimes when underlying device returns I/O errors
303 Description: OSTs not going read-only during write failures
304 Details : OSTs are not remounted read-only when the journal commit threads
305 get I/O errors because fsfilt_ext3 calls journal_start/stop()
306 instead of the ext3 wrappers.
310 Description: poor connect scaling with increasing client count
311 Details : Don't run filter_grant_sanity_check for more than 100 exports
312 to improve scaling for large numbers of clients.
315 Frequency : SLES10 only
317 Description: sanity-quota.sh quotacheck failed: rc = -22
318 Details : Quotas cannot be enabled on SLES10.
321 Frequency : liblustre clients only
323 Description: getdirentries does not give error when run on compute nodes
324 Details : getdirentries does not fail when the size specified as an argument
325 is too small to contain at least one entry
327 Severity : enhancement
329 Description: Add LNET router traceability for debug purposes
330 Details : If a checksum failure occurs with a router as part of the
331 IO path, the NID of the last router that forwarded the bulk data
332 is printed so it can be identified.
337 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
338 Details : Due to a race condition, liblustre clients were occasionally
341 Severity : enhancement
343 Description: lfs setstripe use optional parameters instead of postional
346 Severity : enhancement
348 Description: Nanosecond timestamp support for ldiskfs
349 Details : The on-disk ldiskfs filesystem has added support for nanosecond
350 resolution timestamps. There is not yet support for this at
351 the Lustre filesystem level.
354 Frequency : during server recovery
356 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
357 Details : request with rq_no_resend flag not awake l_wait_event if they get a
361 Frequency : nfs export on patchless client
363 Description: connectathon hang when test nfs export over patchless client
364 Details : Disconnected dentry cannot be found with lookup, so we do not need
365 to unhash it or make it invalid
368 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
369 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
370 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
375 Description: open req refcounting wrong on reconnect
376 Details : If reconnect happened between getting open reply from server and
377 call to mdc_set_replay_data in ll_file_open, we will schedule
378 replay for unreferenced request that we are about to free.
379 Subsequent close will crash in variety of ways.
380 Check that request is still eligible for replay in
381 mdc_set_replay_data().
386 Description: disable writes to filesystem when reading health_check file
387 Details : the default for reading the health_check proc file has changed
388 to NOT do a journal transaction and write to disk, because this
389 can cause reads of the /proc file to hang and block HA state
390 checking on a healthy but otherwise heavily loaded system. It
391 is possible to return to the previous behaviour during configure
392 with --enable-health-write.
394 Severity : enhancement
396 Description: 64-bit inode version
397 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
398 to the inode. This will be required for version-based recovery.
403 Description: MDS fails to start if a duplicate client export is detected
404 Details : in some rare cases it was possible for a client to connect to
405 an MDS multiple times. Upon recovery the MDS would detect this
406 and fail during startup. Handle this more gracefully.
408 Severity : enhancement
410 Description: Add -o localflock option to simulate old noflock
412 Details : This will achieve local-only flock/fcntl locks
418 Description: log_commit_thread vs filter_destroy race leads to crash
419 Details : Take import reference before releasing llog record semaphore
424 Description: Wrong request locking in request set processing
425 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
426 imp_delayed_list, in this place should be used imp_lock.
429 Frequency : when reconnection
431 Description: Grant Leak when osc reconnect to OST
432 Details : When osc reconnect ost, OST(filter) should check whether it
433 should grant more space to client by comparing fed_grant and
434 cl_avail_grant, and return the granted space to client instead
435 of "new granted" space, because client will call osc_init_grant
436 to update the client grant space info.
439 Frequency : when client reconnect to OST
441 Description: Grant Leak when osc do resend and replay bulk write
442 Details : When osc reconnect to OST, OST(filter)should clear grant info of
443 bulk write request, because the grant info while be sync between
444 OSC and OST when reconnect, and we should ignore the grant info
445 these of resend/replay write req.
450 Description: Grant space more than avaiable left space sometimes.
451 Details : When then OST is about to be full, if two bulk writing from
452 different clients came to OST. Accord the avaliable space of the
453 OST, the first req should be permitted, and the second one
454 should be denied by ENOSPC. But if the seconde arrived before
455 the first one is commited. The OST might wrongly permit second
456 writing, which will cause grant space > avaiable space.
459 Frequency : when client is evicted
461 Description: Grant might be wrongly erased when osc is evicted by OST
462 Details : when the import is evicted by server, it will fork another
463 thread ptlrpc_invalidate_import_thread to invalidate the
464 import, where the grant will be set to 0. While the original
465 thread will update the grant it got when connecting. So if
466 the former happened latter, the grant will be wrongly errased
467 because of this race.
472 Description: Checking Stale with correct fid
473 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
474 to check whether it is stale, because sometimes, we want the
475 enqueue happened anyway, and op_data.fid2 will not be initialized.
477 Severity : enhancement
479 Description: update patchless client
480 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
483 Frequency : only with 2.4 kernel
485 Description: random memory corruption
486 Details : size of struct ll_inode_info is to big for union inode.u and this
487 can be cause of random memory corruption.
492 Description: Memory leak in recovery
493 Details : Lov_mds_md was not free in an error handler in mds_create_object.
494 It should also check obd_fail before fsfilt_start, otherwise if
495 fsfilt_start return -EROFS,(failover mds during mds recovery).
496 then the req will return with repmsg->transno = 0 and rc = EROFS.
497 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
498 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
499 be freed no matter whether fsfilt_commit success or not.
502 Frequency : only with huge count clients
504 Description: Prevents from taking the superblock lock in llap_from_page for
506 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
507 for llap_from_page call in ll_removepage prevents from taking the
508 superblock lock for a soon died page.
513 Description: Not check open intent error before release open handle
514 Details : in some rare cases, the open intent error is not checked before
515 release open handle, which may cause
516 ASSERTION(open_req->rq_transno != 0), because it tries to release
517 the failed open handle.
522 Description: Set cat log bitmap only after create log success.
523 Details : in some rare cases, the cat log bitmap is set too early. and it
524 should be set only after create log success.
528 Description: Accessing a block bevice can re-enable I/O when Lustre is
529 tearing down a device.
530 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
535 Description: service threads may hog cpus when there are a lot of requests
537 Details : Insert cond_resched to give other threads a chance to use some of
543 Description: the cat log was not initialized in recovery
544 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
545 unlink log on mds will not be initialized until mds post
546 recovery. And also in mds post recovery, the unlink log will
547 initialization will be done asynchronausly, so there will be race
548 between add unlink log and unlink log initialization.
552 Description: brw_stats were being printed incorrectly
553 Details : brw_stats were being printed as log2 but all of them were not
554 recorded as log2. Also remove some code duplication arising from
555 filter_tally_{read,write}.
559 Frequency : rare, only in recovery.
560 Description: ASSERTION(req->rq_type != LI_POISON) failed
561 Details : imp_lock should be held while iterating over imp_sending_list for
562 prevent destroy request after get timeout in ptlrpc_queue_wait.
566 Description: replay-single.sh test 52 fails
567 Details : A lock's skiplist need to be cleanup when it being unlinked
568 from its resource list.
572 Description: Short directio read returns full requested size rather than
574 Details : Direct I/O operations should return actual amount of bytes
575 transferred rather than requested size.
577 Severity : enhancement
579 Description: metadata RPC reduction (e.g. for rm performance)
580 Details : decrease the amount of synchronous RPC between clients and servers
581 by canceling conflicing lock before the operation on the client side
582 and packing thier handles into the main operation RPC to server.
584 Severity : enhancement
586 Description: Async OSC create to avoid the blocking unnecessarily.
587 Details : If a OST has no remain object, system will block on the creating
588 when need to create a new object on this OST. Now, ways use
589 pre-created objects when available, instead of blocking on an
590 empty osc while others are not empty. If we must block, we block
591 for the shortest possible period of time.
593 --------------------------------------------------------------------------------
595 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
600 Frequency : on some architectures
602 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
603 Details : Uninitialized flags sometimes cause configuration commands to
607 Frequency : patchless clients only
609 Description: missing __iget() symbol export
610 Details : The __iget() symbol export is missing. To avoid the need for
611 this on patchless clients the deathrow inode reaper is turned
612 off, and we depend on the VM to clean up old inodes. This
613 dependency was during via the fix for bug 12181.
615 --------------------------------------------------------------------------------
617 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
619 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
620 INTEROPERATE with older versions automatically. In many cases a
621 special upgrade step is needed. Please read the
622 user documentation before upgrading any part of a live system.
623 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
624 version will not interoperate with 1.6 betas before beta5 (1.5.95).
625 * WARNING: Lustre configuration and startup changes are required with
626 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
632 Severity : enhancement
634 Description: MountConf
635 Details : Lustre configuration is now managed via mkfs and mount
636 commands instead of lmc and lconf. New obd types (MGS, MGC)
637 are added for dynamic configuration management. See
638 https://mail.clusterfs.com/wikis/lustre/MountConf for
641 Severity : enhancement
643 Description: dynamic OST addition
644 Details : OSTs can now be added to a live filesystem
646 Severity : enhancement
648 Description: startup order invariance
649 Details : MDTs and OSTs can be started in any order. Clients only
650 require the MDT to complete startup.
652 Severity : enhancement
654 Description: parallel, asynchronous orphan cleanup
655 Details : orphan cleanup is now performed in separate threads for each
656 OST, allowing parallel non-blocking operation.
658 Severity : enhancement
660 Description: optimized stripe assignment
661 Details : stripe assignments are now made based on ost space available,
662 ost previous usage, and OSS previous usage, in order to try
663 to optimize storage space and networking resources.
665 Severity : enhancement
667 Description: Permanently set tunables
668 Details : All writable /proc/fs/lustre tunables can now be permanently
669 set on a per-server basis, at mkfs time or on a live
672 Severity : enhancement
674 Description: Lustre message v2
675 Details : Add lustre message format v2.
677 Severity : enhancement
679 Description: client OST exclusion list
680 Details : Clients can be started with a list of OSTs that should be
681 declared "inactive" for known non-responsive OSTs.
685 Description: SPEC SFS validation failure on NFS v2 over lustre.
686 Details : Changes the blocksize for regular files to be 2x RPC size,
687 and not depend on stripe size.
689 Severity : enhancement
691 Description: Multiple MD RPCs in flight.
692 Details : Further unserialise some read-only MDS RPCs - learn about intents.
693 To avoid overly-overloading MDS, introduce a limit on number of
694 MDS RPCs in flight for a single client and add /proc controls
695 to adjust this limit.
697 Severity : enhancement
699 Description: client read/write statistics
700 Details : Add client read/write call usage stats for performance
701 analysis of user processes.
702 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
703 file access. extents_stats shows chunk size distribution.
704 extents_stats_per_process show chunk size distribution per
707 Severity : enhancement
709 Description: mds statistics
710 Details : Add detailed mds operations statistics in
711 /proc/fs/lustre/mds/*/stats.
715 Description: Failure of copying files with lustre special EAs.
716 Details : Client side always return success for setxattr call for lustre
717 special xattr (currently only "trusted.lov").
722 Description: Refcount LNET uuids
723 Details : The global LNET uuid list grew linearly with every startup;
724 refcount repeated list entries instead of always adding to
727 Severity : enhancement
729 Description: Dynamic service threads
730 Details : Within a small range, start extra service threads
731 automatically when the request queue builds up.
734 Frequency : mixed-endian client/server environments
736 Description: mixed-endian crashes
737 Details : The new msg_v2 system had some failures in mixed-endian
740 Severity : enhancement
742 Description: Easy OST removal
743 Details : OSTs can be permanently deactivated with e.g. 'lctl
744 conf_param lustre-OST0001.osc.active=0'
746 Severity : enhancement
748 Description: MGS proc entries
749 Details : Added basic proc entries for the MGS showing what filesystems
752 Severity : enhancement
754 Description: provide MGS failover
755 Details : Added config lock reacquisition after MGS server failover.
757 Severity : enhancement
759 Description: add Linux 2.4 support
760 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
764 Description: a large application tries to do I/O to the same resource and dies
766 Details : Check the req->rq_arrival time after the call to
767 ost_brw_lock_get(), but before we do anything about
768 processing it & sending the BULK transfer request. This
769 should help move old stale pending locks off the queue as
770 quickly as obd_timeout.
773 Frequency : when an incorrect nid is specified during startup
775 Description: ptlrpc connect to non-existant node causes kernel crash
776 Details : LNET can't be re-entered from an event callback, which
777 happened when we expire a message after the export has been
778 cleaned up. Instead, hand the zombie cleanup off to another
781 Severity : enhancement
783 Description: plain/inodebits lock performance improvement
784 Details : Grouping plain/inodebits in granted list by their request modes
785 and bits policy, thus improving the performance of search through
789 Frequency : only if OST filesystem is corrupted
791 Description: client incorrectly hits assertion in ptlrpc_replay_req()
792 Details : for a short time RPCs with bulk IO are in the replay list,
793 but replay of bulk IOs is unimplemented. If the OST filesystem
794 is corrupted due to disk cache incoherency and then replay is
795 started it is possible to trip an assertion. Avoid putting
796 committed RPCs into the replay list at all to avoid this issue.
799 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
801 Description: System hang on startup
802 Details : This bug allowed the liblustre (e.g. catamount) client to
803 return to the app before handling all startup RPCs. This
804 could leave the node unresponsive to lustre network traffic
805 and manifested as a server ptllnd timeout.
807 Severity : enhancement
809 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
810 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
811 boolean to control whether to print peer debug info when a
812 client's RPC times out.
815 Frequency : only for kernels with patches from Lustre below 1.4.3
817 Description: Remove old rdonly API
818 Details : Remove old rdonly API which unused from at least lustre 1.4.3
821 Frequency : only for devices with external journals
823 Description: Set external device read-only also
824 Details : During a commanded failover stop, we set the disk device
825 read-only while the server shuts down. We now also set any
826 external journal device read-only at the same time.
829 Frequency : when upgrading from 1.4 while trying to change parameters
831 Description: The wrong (new) MDC name was used when setting parameters for
832 upgraded MDT's. Also allows changing of OSC (and MDC)
833 parameters if --writeconf is specified at tunefs upgrade time.
836 Frequency : when setting specific ost indicies
838 Description: QOS code breaks on skipped indicies
839 Details : Add checks for missing OST indicies in the QOS code, so OSTs
840 created with --index need not be sequential.
842 Severity : enhancement
844 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
845 Details : The uninit_groups feature works in conjunction with the kernel
846 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
847 up the pass1 processing of e2fsck. This is a read-only feature
848 in ldiskfs2 only, so older kernels and current ldiskfs cannot
849 mount filesystems that have had this feature enabled.
851 Severity : enhancement
853 Description: Improve multi-block allocation algorithm to avoid fragmentation
854 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
855 allocation locality and avoid filesystem fragmentation.
857 ------------------------------------------------------------------------------
859 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
861 * Support for kernels:
862 2.4.21-47.0.1.EL (RHEL 3)
864 2.6.9-42.0.10.EL (RHEL 4)
865 2.6.12.6 vanilla (kernel.org)
866 2.6.16.27-0.9 (SLES 10)
867 * Recommended e2fsprogs version: 1.39.cfs5
869 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
873 Frequency : occasional, depends on client load and configuration
874 Bugzilla : 12181, 12203
875 Description: data loss for recently-modified files
877 Details : In some cases it is possible that recently written or created
878 files may not be written to disk in a timely manner (this should
879 normally be within 30s unless client IO load is very high).
880 The problem appears as zero-length files or files that are a
881 multiple of 1MB in size after a client crash or client eviction
882 that are missing data at the end of the file.
884 This problem is more likely to be hit on clients where files are
885 repeatedly created and unlinked in the same directory, clients
886 have a large amount of RAM, have many CPUs, the filesystem has
887 many OSTs, the clients are rebooted frequently, and/or the files
888 are not accessed by other nodes after being written.
890 The presence of the problem can be detected by looking at
891 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
892 smaller than the second (nr_unused) then dirty files will not
893 be flushed automatically to disk. "sync; sleep 10" should be
894 run several times on the node before unmounting it to update
895 Lustre (this is also safe to run on nodes without this problem).
897 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
898 that can cause this same problem, so customers using that kernel
899 also need to update the kernel in addition to Lustre. In order
900 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
902 It is normal that files written just before a client crash (less
903 than 30s) may not yet have been flushed to disk, even for local
907 Frequency : frequent on thin XT3 nodes
909 Description: UUID collision on thin XT3 Linux nodes
910 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
911 randomly, since we relied on an insufficiently-seeded PRNG.
916 Description: OSS hangs after "All ost request buffers busy"
917 Details : A deadlock between quota and journal operations caused OSS
918 hangs after printing "All ost request buffers busy."
921 Frequency : always on liblustre builds
923 Description: Cleanup compiler warnings on liblustre
926 Frequency : always on liblustre builds on XT3
928 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
932 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
933 > 32000 subdirectories
934 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
935 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
936 subdirectory count crosses 32000. This will aid e2fsck to
937 correctly handle more than 32000 subdirectories.
940 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
942 Description: System hang on startup
943 Details : This bug allowed the liblustre (e.g. catamount) client to
944 return to the app before handling all startup RPCs. This
945 could leave the node unresponsive to lustre network traffic
946 and manifested as a server ptllnd timeout.
948 Severity : enhancement
950 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
951 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
952 boolean to control whether to print peer debug info when a
953 client's RPC times out.
958 Description: make O_SYNC working on 2.6 kernels
959 Details : 2.6 kernels use different method for mark pages for write,
960 so need add a code to lustre for O_SYNC work.
965 Description: Failure to close file and release space on NFS
966 Details : Put inode details into lock acquired in ll_intent_file_open.
967 Use mdc_intent_lock in ll_intent_open to properly
968 detect all kind of errors unhandled by mdc_enqueue.
973 Description: proc file read during shutdown sometimes raced obd removal,
975 Details : Add lock to prevent obd access after proc file removal.
978 Frequency : Only for files larger than 4GB on 32-bit clients.
980 Description: improperly doing page alignment of locks
981 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
982 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
987 Description: RPCs being resent when they shouldn't be
988 Details : Some RPCs that should not be resent are being resent. This
989 can cause inconsistencies in the RPC state machine. Do not
990 resend such requests.
993 Frequency : rare, only with NFS export
995 Description: Crash on NFS re-export node
996 Details : under very unusual load conditions an assertion is hit in
997 ll_intent_file_open()
1000 Frequency : only if OST filesystem is corrupted
1002 Description: client incorrectly hits assertion in ptlrpc_replay_req()
1003 Details : for a short time RPCs with bulk IO are in the replay list,
1004 but replay of bulk IOs is unimplemented. If the OST filesystem
1005 is corrupted due to disk cache incoherency and then replay is
1006 started it is possible to trip an assertion. Avoid putting
1007 committed RPCs into the replay list at all to avoid this issue.
1012 Description: large O_DIRECT requests fail under memory pressure/fragmentation
1013 Details : Large single O_DIRECT read and write calls can fail to allocate
1014 a sufficiently large buffer to process the request. In case of
1015 allocation failure the allocation is retried with a smaller
1016 buffer and broken into smaller requests.
1018 Severity : enhancement
1020 Description: Add -o localflock option to simulate old noflock behaviour.
1021 Details : This will achieve local-only flock/fcntl locks coherentness.
1026 Description: versioning check is incomplete
1027 Details : Checking the version difference of client vs. server, report
1028 error if the gap is too big.
1033 Description: add support PG_writeback bit
1034 Details : add support for PG_writeback bit for Lustre, for more carefull
1035 work with page cache in 2.6 kernel. This also fix some deadlocks
1036 and remove hack for work O_SYNC with 2.6 kernel.
1038 Severity : enhancement
1040 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
1041 Details : The uninit_groups feature works in conjunction with the kernel
1042 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
1043 up the pass1 processing of e2fsck. This is a read-only feature
1044 in ldiskfs2 only, so older kernels and current ldiskfs cannot
1045 mount filesystems that have had this feature enabled.
1047 Severity : enhancement
1049 Description: Improve multi-block allocation algorithm to avoid fragmentation
1050 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1051 allocation locality and avoid filesystem fragmentation.
1053 ------------------------------------------------------------------------------
1055 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
1057 * Support for kernels:
1058 2.6.9-42.0.3.EL (RHEL 4)
1059 2.6.5-7.276 (SLES 9)
1060 2.4.21-47.0.1.EL (RHEL 3)
1061 2.6.12.6 vanilla (kernel.org)
1062 2.6.16.21-0.8 (SLES10)
1063 * Recommended e2fsprogs version: 1.39.cfs2-0
1065 * The backwards-compatible /proc/sys/portals symlink has been removed
1066 in this release. Before upgrading, please ensure that you change
1067 any configuration scripts or /etc/sysctl.conf files that access
1068 /proc/sys/portals/* or sysctl portals.* to use the corresponding
1069 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
1070 in advance of the upgrade on any system running Lustre 1.4.6 or
1071 newer, since /proc/sys/lnet was added in that version.
1072 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1076 Frequency : only when quota is used
1078 Description: avoid scanning export list for quota master
1079 Details : Change the algorithms to avoid scanning export list in order
1080 to improve the efficiency.
1083 Frequency : MDS failover only, very rarely
1085 Description: "went back in time" messages on mds failover
1086 Details : The greatest transno may be lost when the current operation
1087 finishes with an error (transno==0) and the client's last_rcvd
1088 record is over-written. Save the greatest transno in the
1089 mds_last_transno for this case.
1092 Frequency : always for specific kernels and striping counts
1094 Description: client may get "Matching packet too big" without ACL support
1095 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
1096 when trying to access files in certain configurations. The
1097 clients should in fact be denied when mounting because they do
1098 not understand ACLs.
1101 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
1103 Description: many clients connecting with IO in progress causes connect timeouts
1104 Details : Avoid synchronous journal commits to avoid delays caused by many
1105 clients connecting/disconnecting when bulk IO is in progress.
1106 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
1107 OST_IO_PORTAL to avoid delays behind potentially many pending
1111 Frequency : occasionally with multiple writers to a single file
1113 Description: shared writes to file may result in wrong size reported by stat()
1114 Details : Allow growing of kms when extent lock is cancelled
1117 Frequency : always with random mmap IO to multi-striped file
1119 Description: mmap write might be lost if we are writing to a 'hole' in stripe
1120 Details : Only if the hole is at the end of OST object so that kms is too
1121 small. Fix is to increase kms accordingly in ll_nopage.
1124 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
1126 Description: writes to a missing object would leak memory on the OST
1127 Details : If there is an inconsistency between the MDS and OST filesystems,
1128 such that the MDS references an object that doesn't exist, writes
1129 to that object will leak memory due to incorrect cleanup in the
1130 error handling path, eventually running out of memory on the OST.
1135 Description: Creating too long symlink causes lustre errors
1136 Details : Check symlink and name lengths before sending requests to MDS.
1139 Frequency : only if flock is enabled (not on by default)
1141 Description: posix locks not released on fd closure on 2.6.9+
1142 Details : We failed to add posix locks to list of inode locks on 2.6.9+
1143 kernels, this caused such locks not to be released on fd close and
1144 then assertions on fs unmount about still used locks.
1147 Frequency : MDS failover only, very rarely
1149 Description: clients may get ASSERTION(granted_lock != NULL)
1150 Details : When request was taking a long time, and a client was resending
1151 a getattr by name lock request. The were multiple lock requests
1152 with the same client lock handle and
1153 mds_getattr_name->fixup_handle_for_resent_request found one of the
1154 lock handles but later failed with ASSERTION(granted_lock != NULL).
1159 Description: handle->h_buffer_credits > 0, assertion failure
1160 Details : h_buffer_credits is zero after truncate, causing assertion
1161 failure. This patch extends the transaction or creates a new
1165 Frequency : NFS re-export or patchless client
1166 Bugzilla : 11179, 10796
1167 Description: Crash on NFS re-export node (__d_move)
1168 Details : We do not want to hash the dentry if we don't have a lock.
1169 But if this dentry is later used in d_move, we'd hit uninitialised
1170 list head d_hash, so we just do this to init d_hash field but
1171 leave dentry unhashed.
1174 Frequency : NFS re-export or patchless client
1176 Description: NFS exports has problem with symbolic link
1177 Details : lustre client didn't properly install dentry when re-exported
1178 to NFS or running patchless client.
1181 Frequency : NFS re-export or patchless client
1183 Description: Various nfs/patchless fixes.
1184 Details : fixes reuse disconected alias for lookup process - this fixes
1185 warning "find_exported_dentry: npd != pd",
1186 fix permission error with open files at nfs.
1187 fix apply umask when do revalidate.
1190 Frequency : occasional
1192 Description: Crash on NFS re-export node
1193 Details : calling clear_page() on the wrong pointer triggered oops in
1194 generic_mapping_read().
1197 Frequency : rarely, using O_DIRECT IO
1199 Description: unaligned directio crashes client with LASSERT
1200 Details : check for unaligned buffers before trying any requests.
1203 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
1205 Description: stale data returned from RAID cache
1206 Details : If only a small amount of IO is done to the RAID device before
1207 reading it again it is possible to get stale data from the RAID
1208 cache instead of reading it from disk.
1211 Frequency : always for sles10 kernel
1213 Description: sles10 support
1214 Details : ll_follow_link: compile fixes and using of nd_set_link
1215 under newer kernels.
1218 Frequency : depends on arch, kernel and compiler version, always on sles10
1221 Description: recursive or deep enough symlinks cause stack overflow
1222 Details : getting rid of large stack-allocated variable in
1226 Frequency : depends on hardware
1228 Description: lustre write performance loss in the SLES10 kernel
1229 Details : the performance loss is caused by using of write barriers in the
1230 ext3 code. The SLES10 kernel turns barrier support on by
1231 default. The fix is to undo that change for ldiskfs.
1233 ------------------------------------------------------------------------------
1235 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
1237 * Support for kernels:
1238 2.6.9-42.0.3EL (RHEL 4)
1239 2.6.5-7.276 (SLES 9)
1240 2.4.21-47.0.1.EL (RHEL 3)
1241 2.6.12.6 vanilla (kernel.org)
1245 Frequency : quota enabled and large files being deleted
1247 Description: releasing more than 4GB of quota at once hangs OST
1248 Details : If a user deletes more than 4GB of files on a single OST it
1249 will cause the OST to spin in an infinite loop. Release
1250 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1255 Description: statfs data retrieved from /proc may be stale or zero
1256 Details : When reading per-device statfs data from /proc, in the
1257 {kbytes,files}_{total,free,avail} files, it may appear
1258 as zero or be out of date.
1261 Frequency : systems with MD RAID1 external journal devices
1263 Description: lconf's call to blkid is confused by RAID1 journal devices
1264 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1265 of returning all block devices that match the journal UUID.
1268 Frequency : always, for aggregate stripe size over 4GB
1270 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
1271 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
1272 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
1275 Frequency : always if "lfs find" used on a local file/directory
1277 Description: "lfs find" segfaults if used on a local file/directory
1278 Details : The case where a directory component was not specified wasn't
1279 handled correctly. Handle this properly.
1282 Frequency : always on ppc64
1284 Description: the write to an ext3 filesystem mounted with mballoc got stuck
1285 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1286 perform endianness conversion.
1289 Frequency : rarely (truncate to non-zero file size after write under load)
1290 Bugzilla : 10730, 10687
1291 Description: Files padded with zeros to next 4K multiple
1292 Details : With filesystems mounted using the "extents" option (2.6 kernels)
1293 it is possible that files that are truncated to a non-zero size
1294 immediately after being written are filled with zero bytes beyond
1295 the truncated size. No file data is lost.
1297 Severity : enhancement
1299 Description: Allow recovery/failover for liblustre clients.
1300 Details : liblustre clients were unaware of failover configurations until
1303 Severity : enhancement
1305 Description: user file locks should fail when not mounting with flock option
1306 Details : Set up an error-returning stub in ll_file_operations.lock field
1307 to prevent incorrect behaviour when client is mounted without
1308 flock option. Also, set up properly f_op->flock field for
1312 Frequency : always on ia64
1314 Description: "lfs df" loops on printing out MDS statfs information
1315 Details : The obd_ioctl_data was not initialized and in some systems
1316 this caused a failure during the ioctl that did not return
1317 an error. Initialize the struct and return an error on failure.
1320 Frequency : SLES 9 only
1322 Description: Error of copying files with lustre special EAs as root
1323 Details : Client side always return success for setxattr call for lustre
1324 special xattr (currently only "trusted.lov").
1327 Frequency : rarely on clusters with both ia64+i386 clients
1329 Description: ia64+i686 clients doing shared IO on the same file may LBUG
1330 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
1331 clients are doing concurrent writes to the same file it is
1332 possible that the ia64 clients may LASSERT because the OST
1333 extent locks are not PAGE_SIZE aligned. Ensure that grown
1334 locks are always aligned on the request boundary.
1337 Frequency : specific use, occasional
1339 Description: Overwriting in use executable truncates on-disk binary image
1340 Details : If one node attempts to overwrite an executable in use by
1341 another node, we now correctly return ETXTBSY instead of
1342 truncating the file.
1344 Severity : enhancement
1346 Description: Async OSC create to avoid the blocking unnecessarily.
1347 Details : If a OST has no remain object, system will block on the creating
1348 when need to create a new object on this OST. Now, ways use
1349 pre-created objects when available, instead of blocking on an
1350 empty osc while others are not empty. If we must block, we block
1351 for the shortest possible period of time.
1356 Description: chmod on Lustre root is propagated to other clients
1357 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
1358 invalid by the follow_mount time.
1361 Frequency : liblustre clients only
1363 Description: Race in 'instant cancel' lock handling could lead to such locks
1364 never to be granted in case of SMP MDS
1365 Details : Do not destroy not yet granted but cbpending locks in
1369 Frequency : replay/resend of open
1371 Description: non null lock assetion failure in mds_intent_policy
1372 Details : Trying to replay/resend lockless open requests resulted in
1373 mds_open() returning 0 with no lock. Now it sets a flag if
1374 a lock is going to be returned.
1376 Severity : enhancement
1378 Description: Checksum enhancements
1379 Details : New checksum enhancements allow for resending RPCs that failed
1382 Severity : enhancement
1384 Description: Tunables on number of dirty pages in cacche
1385 Details : Allow to set limit on number of dirty pages cached.
1390 Description: client crash on unmount - lock still has references
1391 Details : In some error handling cases it was possible to leak a lock
1392 reference on a client while accessing a file. This was not
1393 harmful to the client during operation, but would cause the
1394 client to crash when the filesystem is unmounted.
1397 Frequency : specific case, rare
1399 Description: ETXTBSY on mds though file not in use by client
1400 Details : ETXTBSY is no longer incorrectly returned when attempting to
1401 chmod or chown a directory that the user previously tried to
1402 execute or a currently-executing binary.
1405 Frequency : extremely rare except on liblustre-based clients
1407 Description: Lustre space not freed when files are deleted
1408 Details : Clean up open-unlinked files after client eviction. Previously
1409 the unlink was skipped and the files remained as orphans.
1414 Description: OST failure "would be an LBUG" in waiting_locks_callback()
1415 Details : In some cases it was possible to send a blocking callback to
1416 a client doing a glimpse, even though that client didn't get
1417 a lock granted. When the glimpse lock is cancelled on the OST
1418 the freed lock is left on the waiting list and corrupted the list.
1421 Frequency : all core dumps
1423 Description: Broke core dumps to lustre
1424 Details : Negative dentry may be unhashed if parent does not have UPDATE
1425 lock, but some callers, e.g. do_coredump, expect dentry to be
1426 hashed after successful create, hash it in ll_create_it.
1428 ------------------------------------------------------------------------------
1430 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
1432 * Support for kernels:
1433 2.6.9-42.0.2.EL (RHEL 4)
1434 2.6.5-7.276 (SLES 9)
1435 2.4.21-40.EL (RHEL 3)
1436 2.6.12.6 vanilla (kernel.org)
1440 Frequency : always on RHEL 3
1442 Description: Number of open files grows over time
1443 Details : The number of open files grows over time, whether or not
1444 Lustre is started. This was due to a filp leak introduced
1445 by one of our kernel patches.
1447 ------------------------------------------------------------------------------
1449 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1451 * Support for kernels:
1452 2.6.9-42.EL (RHEL 4)
1453 2.6.5-7.276 (SLES 9)
1454 2.4.21-40.EL (RHEL 3)
1455 2.6.12.6 vanilla (kernel.org)
1460 Bugzilla : 5719, 9635, 9792, 9684
1461 Description: OST (or MDS) trips assertions in (re)connection under heavy load
1462 Details : If a server is under heavy load and cannot reply to new
1463 connection requests before the client resends the (re)connect,
1464 the connection handling code can behave badly if two service
1465 threads are concurrently handing separate (re)connections from
1466 the same client. Add better locking to the connection handling
1467 code, and ensure that only a single connection will be processed
1468 for a given client UUID, even if the lock is dropped.
1470 Severity : enhancement
1472 Description: add TCP zero-copy support to kernel
1473 Details : Add support to the kernel TCP stack to allow zero-copy bulk
1474 sends if the hardware supports scatter-gather and checksumming.
1475 This allows socklnd to do client-write and server-read more
1476 efficiently and reduce CPU utilization from skbuf copying.
1479 Frequency : only if NFS exporting from client
1481 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
1482 Details : If setting attributes on a file created under NFS that had
1483 never been opened it would be possible to oops the client
1484 if the file had no objects.
1487 Frequency : always for liblustre
1489 Description: liblustre client does MDS+OSTs setattr RPC for each write
1490 Details : When doing a write from a liblustre client, the client
1491 incorrectly issued an RPC to the MDS and each OST the file was
1492 striped over in order to update the timestamps. When writing
1493 with small chunks and many clients this could overwhelm the MDS
1494 with RPCs. In all cases it would slow down the write because
1495 these RPCs are unnecessary.
1497 Severity : enhancement
1499 Description: allow number of MDS service threads to be changed at module load
1500 Details : It is now possible to change the number of MDS service threads
1501 running. Adding "options mds mds_num_threads={N}" to the MDS's
1502 /etc/modprobe.conf will set the number of threads for the next
1503 time Lustre is restarted (assuming the "mds" module is also
1504 reloaded at that time). The default number of threads will
1505 stay the same, 32 for most systems.
1510 Description: OST crash if filesystem is unformatted or corrupt
1511 Details : If an OST is started on a device that has never been formatted
1512 or if the filesystem is corrupt and cannot even mount then the
1513 error handling cleanup routines would dereference a NULL pointer.
1518 Description: NULL pointer deref in llap_from_page.
1519 Details : get_cache_page_nowait can return a page with NULL (or otherwise
1520 incorrect) mapping if the page was truncated/reclaimed while it was
1521 searched for. Check for this condition and skip such pages when
1522 doing readahead. Introduce extra check to llap_from_page() to
1523 verify page->mapping->host is non-NULL (so page is not anonymous).
1526 Frequency : Sometimes when using sys_sendfile
1528 Description: "page not covered by a lock" warnings from ll_readpage
1529 Details : sendfile called ll_readpage without right page locks present.
1530 Now we introduced ll_file_sendfile that does necessary locking
1531 around call to generic_file_sendfile() much like we do in
1535 Frequency : with certain MDS communication failures at client mount time
1537 Description: NULL pointer deref after failed client mount
1538 Details : a client connection request may delayed by the network layer
1539 and not be sent until after the PTLRPC layer has timed out the
1540 request. If the client fails the mount immediately it will try
1541 to clean up before the network times out the request. Add a
1542 reference from the request import to the obd device and delay
1543 the cleanup until the network drops the request.
1546 Frequency : occasionally during client (re)connect
1548 Description: assertion failure during client (re)connect
1549 Details : processing a client connection request may be delayed by the
1550 client or server longer than the client connect timeout. This
1551 causes the client to resend the connection request. If the
1552 original connection request is replied in this interval, the
1553 client may trip an assertion failure in ptlrpc_connect_interpret()
1554 which thought it would be the only running connect process.
1557 Frequency : only with obd_echo servers and clients that are rebooted
1559 Description: kernel BUG accessing uninitialized data structure
1560 Details : When running an obd_echo server it did not start the ping_evictor
1561 thread, and when a client was evicted an uninitialized data
1562 structure was accessed. Start the ping_evictor in the RPC
1563 service startup instead of the OBD startup.
1565 Severity : enhancement
1566 Bugzilla : 10193 (patchless)
1567 Description: Remove dependency on various unexported kernel interfaces.
1568 Details : No longer need reparent_to_init, exit_mm, exit_files,
1569 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
1572 Frequency : rare (only users of deprecated and unsupported LDAP config)
1574 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
1575 Details : LDAP apparently contains 'lustreName' attributes instead of
1576 'name'. A simple remapping of the name is sufficient.
1579 Frequency : rare (only with non-default dump_on_timeout debug enabled)
1581 Description: waiting_locks_callback trips kernel BUG if client is evicted
1582 Details : Running with the dump_on_timeout debug flag turned on makes
1583 it possible that the waiting_locks_callback() can try to dump
1584 the Lustre kernel debug logs from an interrupt handler. Defer
1585 this log dumping to the expired_lock_main() thread.
1587 Severity : enhancement
1589 Description: Support NFS exporting on 2.6 kernels.
1590 Details : Implement non-rawops metadata methods for NFS server to use without
1591 changing NFS server code.
1594 Frequency : very rare (synthetic metadata workload only)
1596 Description: two racing renames might cause an MDS thread to deadlock
1597 Details : Running the "racer" program may cause one MDS thread to rename
1598 a file from being the source of a rename to being the target of
1599 a rename at exactly the same time that another thread is doing
1600 so, and the second thread has already enqueued these locks after
1601 doing a lookup of the target and is trying to relock them in
1602 order. Ensure that we don't try to re-lock the same resource.
1605 Frequency : only very large systems with liblustre clients
1607 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
1608 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
1609 all OSTs in parallel. This allows the eviction of stale liblustre
1610 clients to proceed much faster than if they were done in series,
1611 and also offers similar improvements for other set_info RPCs.
1616 Description: excessive CPU usage during initial read phase on client
1617 Details : During the initial read phase on a client, it would agressively
1618 retry readahead on the file, consuming too much CPU and impacting
1619 performance (since 1.4.5.8). Improve the readahead algorithm
1620 to avoid this, and also improve some other common cases (read
1621 of small files in particular, where "small" is files smaller than
1622 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
1627 Description: MDS crash when receiving packet with unknown intent.
1628 Details : Do not LBUG in unknown intent case, just return -EFAULT
1630 Severity : enhancement
1631 Bugzilla : 9293, 9385
1632 Description: MDS RPCs are serialised on client. This is unnecessary for some.
1633 Details : Do not serialize getattr (non-intent version) and statfs.
1636 Frequency : occasional, when OST network is overloaded/intermittent
1638 Description: client evicted by OST after bulk IO timeout
1639 Details : If a client sends a bulk IO request (read or write) the OST
1640 may evict the client if it is unresposive to its data GET/PUT
1641 request. This is incorrect if the network is overloaded (takes
1642 too long to transfer the RPC data) or dropped the OST GET/PUT
1643 request. There is no need to evict the client at all, since
1644 the pinger and/or lock callbacks will handle this, and the
1645 client can restart the bulk request.
1648 Frequency : Always when mmapping file with no objects
1650 Description: client crashes when mmapping file with no objects
1651 Details : Check that we actually have objects in a file before doing any
1652 operations on objects in ll_vm_open, ll_vm_close and
1658 Description: Request leak when working with deleted CWD
1659 Details : Introduce advanced request refcount tracking for requests
1660 referenced from lustre intent.
1662 Severity : Enhancement
1664 Description: Cache open file handles on client.
1665 Details : MDS now will return special lock along with openhandle, if
1666 requested and client is allowed to hold openhandle, even if unused,
1667 until such a lock is revoked. Helps NFS a lot, since NFS is opening
1668 closing files for every read/write openration.
1670 Severity : Enhancement
1672 Description: Cache open negative dentries on client when possible.
1673 Details : Guard negative dentries with UPDATE lock on parent dir, drop
1674 negative dentries on lock revocation.
1679 Description: Remounting a client read-only wasn't possible with a zconf mount
1680 Details : It wasn't possible to remount a client read-only with llmount.
1682 Severity : enhancement
1683 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
1684 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
1685 MPICH is included to add Lustre-specific ADIO interfaces.
1686 This is based closely on the UFS ADIO layer and only differs
1687 in file creation, in order to allow the OST striping to be set.
1688 This is user-contributed code and not supported by CFS.
1693 Description: extended inode attributes (immutable, append-only) work improperly
1694 when 2.4 and 2.6 kernels are used on client/server or vice versa
1695 Details : Introduce kernel-independent values for these flags.
1697 Severity : enhancement
1700 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
1701 Details : Many of the /proc/ tunables can only be tuned at a megabyte
1702 granularity. Now, Fractional MB granularity is be supported,
1703 this is very useful for low memory system.
1705 Severity : enhancement
1707 Description: Getattr by fid
1708 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
1709 locks, avoids extra getattr rpc requests to MDS, allows '/' to
1710 have locks and avoids getattr rpc requests for it on every stat.
1713 Frequency : Always, for filesystems larger than 2TB
1715 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1716 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
1717 filesystems larger than 2TB to be mounted with mballoc enabled.
1720 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
1722 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1723 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
1724 filesystems larger than 2TB is mounted then the kernel will
1725 silently corrupt the start of the filesystem. CONFIG_LBD is
1726 enabled for all CFS-supported kernels, but the possibility of
1727 this happening with a modified kernel config exists.
1729 Severity : enhancement
1731 Description: add client O_DIRECT support for 2.6 kernels
1732 Details : It is now possible to do O_DIRECT reads and writes to files
1733 in the Lustre client mountpoint on 2.6 kernel clients.
1735 Severity : enhancement
1737 Description: parallel glimpse, setattr, statfs, punch, destroy requests
1738 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
1739 parallel, not waiting for response from every OST before sending
1740 a rpc to the next OST.
1745 Description: setattr vs write race when updating file timestamps
1746 Details : Client processes that update a file timestamp into the past
1747 right after writing to the file (e.g. tar) it is possible that
1748 the updated file modification time can be reset to the current
1749 time due to a race between processing the setattr and write RPC.
1751 Severity : enhancement
1753 Description: Bring 'lfs find' closer in line with regular Linux find.
1754 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
1755 -print0 options and obtains all the needed info through the lustre
1758 Severity : enhancement
1760 Description: support up to 1024 configured devices on one node
1761 Details : change obd_dev array from statically allocated to dynamically
1762 allocated structs as they are first used to reduce memory usage
1767 Description: Flush dirty partially truncated pages during truncate
1768 Details : Immediatelly flush partially truncated pages in filter_setattr,
1769 this way we completely avoid having any pages in page cache on OST
1770 and can retire ugly workarounds during writes to flush such pages.
1775 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1776 Details : protect inode from truncation within vfs_unlink() context
1777 just take a reference before calling vfs_unlink() and release it
1778 when parent's i_sem is free.
1783 Description: last_id value checked outside lock on OST caused LASSERT failure
1784 Details : If there were multiple MDS->OST object precreate requests in
1785 flight, it was possible that the OST's last object id was checked
1786 outside a lock and incorrectly tripped an assertion. Move checks
1787 inside locks, and discard old precreate requests.
1790 Frequency : always, if extents are used on OSTs
1792 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1793 Details : OSTs using the extents format would not zero the high 16 bits of
1794 the index physical block number. This is not a problem for any
1795 OST filesystems smaller than 16TB, and no kernels support ext3
1796 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1797 new/modified files) and can be fixed for existing filesystems
1798 with e2fsprogs-1.39-cfs1.
1803 Description: import connection selection may be incorrect if timer wraps
1804 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1805 import connections to be ignored if the 32-bit jiffies counter
1806 wraps. Use a 64-bit jiffies counter.
1809 Frequency : very large clusters immediately after boot
1811 Description: LNET request buffers exhausted under heavy short-term load
1812 Details : If a large number of client requests are generated on a service
1813 that has previously never seen so many requests it is possible
1814 that the request buffer growth cannot keep up with the spike in
1815 demand. Instead of dropping incoming requests, they are held in
1816 the LND until the RPC service can accept more requests.
1819 Frequency : Sometimes during replay
1821 Description: Assertion failure in ll_local_open after replay.
1822 Details : If replay happened on an open request reply before we were able
1823 to set replay handler, reply will become not swabbed tripping the
1824 assertion in ll_local_open. Now we set the handler right after
1825 recognising of open request
1828 Frequency : very rare
1830 Description: kernel reports "badness in vsnprintf"
1831 Details : Reading from the "recovery_status" /proc file in small chunks
1832 may cause a negative length in lprocfs_obd_rd_recovery_status()
1833 call to vsnprintf() (which is otherwise harmless). Exit early
1834 if there is no more space in the output buffer.
1836 Severity : enhancement
1838 Description: clear OBD RPC statistics by writing to them
1839 Details : It is now possible to clear the OBD RPC statistics by writing
1840 to the "stats" file.
1845 Description: Client mtime is not the same on different clients after utimes
1846 Details : In some cases, the client was using the utimes() syscall on
1847 a file cached on another node. The clients now validate the
1848 ctime from the MDS + OSTs to determine which one is right.
1853 Description: Inability to activate failout mode
1854 Details : lconf script incorrectly assumed that in pythong string's numeric
1855 value is used in comparisons.
1858 Frequency : always with multiple stripes per file
1860 Description: Inefficient object allocation for mutli-stripe files
1861 Details : When selecting which OSTs to stripe files over, for files with
1862 a stripe count that divides evenly into the number of OSTs,
1863 the MDS is always picking the same starting OST for each file.
1864 Return the OST selection heuristic to the original design.
1869 Description: mount failures may take full timeout to return an error
1870 Details : Under some heavy load conditions it is possible that a
1871 failed mount can wait for the full obd_timeout interval,
1872 possibly several minutes, before reporting an error.
1873 Instead return an error as soon as the status is known.
1875 Frequency : quota enabled and large files being deleted
1877 Description: releasing more than 4GB of quota at once hangs OST
1878 Details : If a user deletes more than 4GB of files on a single OST it
1879 will cause the OST to spin in an infinite loop. Release
1880 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1885 Description: statfs data retrieved from /proc may be stale or zero
1886 Details : When reading per-device statfs data from /proc, in the
1887 {kbytes,files}_{total,free,avail} files, it may appear
1888 as zero or be out of date.
1891 Frequency : systems with MD RAID1 external journal devices
1893 Description: lconf's call to blkid is confused by RAID1 journal devices
1894 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1895 of returning all block devices that match the journal UUID.
1898 Frequency : always, for aggregate stripe size over 4GB
1900 Description: assertion fails when trying to use 4GB stripe size
1901 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
1902 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
1905 Frequency : always on ppc64
1907 Description: the first write on an ext3 filesystem with mballoc got stuck
1908 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1909 perform endianness conversion.
1911 ------------------------------------------------------------------------------
1913 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1915 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
1916 INTEROPERATE with older versions automatically. Please read the
1917 user documentation before upgrading any part of a live system.
1918 * WARNING: Lustre networking configuration changes are required with
1919 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
1922 * Support for kernels:
1923 2.6.9-22.0.2.EL (RHEL 4)
1924 2.6.5-7.244 (SLES 9)
1925 2.6.12.6 vanilla (kernel.org)
1928 Severity : enhancement
1929 Bugzilla : 7981/8208
1930 Description: Introduced Lustre Networking (LNET)
1931 Details : LNET is new networking infrastructure for Lustre, it includes
1932 a reorganized network configuration mode (see the user
1933 documentation for full details) as well as support for routing
1934 between different network fabrics. Lustre Networking Devices
1935 (LNDs) for the supported network fabrics have also been
1936 created for this new infrastructure.
1938 Severity : enhancement
1939 Description: Introduced Access control lists
1940 Details : clients can set ACLs on files and directories in order to have
1941 more fine-grained permissions than the standard Unix UGO+RWX.
1942 The MDS must be started with the "-o acl" mount option.
1944 Severity : enhancement
1945 Description: Introduced filesystem quotas
1946 Details : Administrators may now establish per-user quotas on the
1949 Severity : enhancement
1951 Description: Configuration change for the XT3
1952 The PTLLND is now used to run Lustre over Portals on the XT3
1953 The configure option(s) --with-cray-portals are no longer used.
1954 Rather --with-portals=<path-to-portals-includes> is used to
1955 enable building on the XT3. In addition to enable XT3 specific
1956 features the option --enable-cray-xt3 must be used.
1961 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
1962 Details : A race between allocating a new llcd and re-getting the llcd_lock
1963 allowed another thread to grab newly-allocated llcd.
1965 Severity : enhancement
1967 Description: 2.6 OST async journal commit and locking fix to improve performance
1968 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
1969 2.6 kernels are now async as they already were in 2.4 kernels so
1970 that they can commit concurrently with the network bulk transfer.
1971 For block-allocated files the filter allocation semaphore is held
1972 to avoid filesystem fragmentation during allocation. BKL lock
1973 removed for 2.6 xattr operations where it is no longer needed.
1978 Description: lconf incorrectly determined whether two IP networks could talk
1979 Details : In some more complicated routing and multiple-network
1980 configurations, lconf will avoid trying to make a network
1981 connection to a disjoint part of the IP space. It was doing the
1982 math incorrectly for one set of cases.
1987 Description: Fix for potential infinite loop processing records in an llog.
1988 Details : If an llog record is corrupted/zeroed, it is possible to loop
1989 forever in llog_process(). Validate the llog record length
1990 and skip the remainder of the block on error.
1993 Frequency : occasional (liblustre only)
1995 Description: liblustre could not open files whose last component is a symlink
1996 Details : sysio_path_walk() would incorrectly pass the open intent to
1997 intermediate path components.
2000 Frequency : rare (liblustre only with non-standard tuning)
2001 Bugzilla : 7201 (7350)
2002 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
2003 Details : llu_lookup_finish_locks() tries to set lock data on a lock
2004 after it has been released, only do this for referenced locks
2006 Severity : enhancement
2008 Description: specifying an (invalid) directory default stripe_size of -1
2009 would reset the directory default striping
2010 Details : stripe_size -1 was used internally to signal directory stripe
2011 removal, now use "all default" to signal dir stripe removal
2012 as a directory striping of "all default" is not useful
2015 Frequency : common for large clusters running liblustre clients
2017 Description: doing an ls when liblustre clients are running is slow
2018 Details : sending a glimpse AST to a liblustre client waits for every AST
2019 to time out, as liblustre clients will not respond. Since they
2020 cannot cache data we refresh the OST lock LVB from disk instead.
2022 Severity : enhancement
2024 Description: doing an ls at the same time as file IO can be slow
2025 Details : enqueue and other "small" requests can be blocked behind many
2026 large IO requests. Create a new OST IO portal for non-IO
2027 requests so they can be processed faster.
2030 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
2032 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
2033 created file with mode 000
2034 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
2035 allow an ftruncate() as a non-root user to a file with mode 000.
2036 Lustre now respects this flag to disable mode checks when
2037 truncating a file owned by the user
2040 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
2043 Description: Revoking locks from clients that went dead or catatonic might take
2045 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
2046 cancellation of such locks instant on servers without waiting for
2047 any reply from clients. Clients drops these locks when cancel
2048 notification from server is received without replying.
2051 Frequency : liblustre-only, when liblustre client dies or becomes busy
2053 Description: Doing ls on Linux clients can take a long time with active
2055 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
2056 granting such locks to it in the first place if possible. Locks
2057 are taken by proxy on the OST during the read or write and
2058 dropped immediately afterward. Add connect flags handling, do
2059 not grant locks to liblustre clients for glimpse ASTs.
2061 Severity : enhancement
2063 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
2064 Details : Existing read-ahead algorithm is tuned for the case of streamlined
2065 sequential reads and behaves badly with applications doing random
2066 reads. Improve it by reading ahead at least read region, and
2067 avoiding excessive large RPC for small reads.
2069 Severity : enhancement
2071 Description: Creating more than 1000 files for a single job may cause a load
2072 imbalance on the OSTs if there are also a large number of OSTs.
2073 Details : qos_prep_create() uses an OST index reseed value that is an
2074 even multiple of the number of available OSTs so that if the
2075 reseed happens in the middle of the object allocation it will
2076 still utilize the OSTs as uniformly as possible.
2081 Description: OST or MDS may oops in ping_evictor_main()
2082 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
2083 but doesn't restart at beginning of obd_exports_timed list
2086 Severity : enhancement
2088 Description: improve by-nid export eviction on the MDS and OST
2089 Details : allow multiple exports with the same NID to be evicted at one
2090 time without re-searching the exports list.
2093 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
2095 Description: MDS may oops in groups_free()
2096 Details : in rare race conditions a newly allocated group_info struct is
2097 freed again, and this can be NULL. The 2.4 compatibility code
2098 for groups_free() checked for a NULL pointer, but 2.6 did not.
2101 Frequency : common for liblustre clients doing little filesystem IO
2102 Bugzilla : 9352, 7313
2103 Description: server may evict liblustre clients accessing contended locks
2104 Details : if a client is granted a lock or receives a completion AST
2105 with a blocking AST already set it would not reply to the AST
2106 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
2109 Frequency : lfs setstripe, only systems with more than 160 OSTs
2111 Description: unable to set striping with a starting offset beyond OST 160
2112 Details : llapi_create_file() incorrectly limited the starting stripe
2113 index to the maximum single-file stripe count.
2116 Frequency : LDAP users only
2118 Description: lconf did not handle in-kernel recovery with LDAP properly
2119 Details : lconf/LustreDB get_refs() is searching the wrong namespace
2121 Severity : enhancement
2123 Description: bind OST threads to NUMA nodes to improve performance
2124 Details : all OST threads are uniformly bound to CPUs on a single NUMA
2125 node and do their allocations there to localize memory access
2127 Severity : enhancement
2129 Description: llmount can determine client NID directly from Myrinet (GM)
2130 Details : the client NID code from gmnalnid was moved directly into
2131 llmount, removing the need to use this or specifying the
2132 client NID explicitly when mounting GM clients with zeroconf
2135 Frequency : if client is started with down MDS
2137 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
2138 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
2139 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
2140 ptlrpc_import_delayed_req() because we didn't check if the
2141 request was interrupted, and we also didn't break out of the
2142 event loop if there was no timeout
2147 Description: data loss during non-page-aligned writes to a single file from
2148 both multiple nodes and multiple threads on one node at same time
2149 Details : updates to KMS and lsm weren't protected by common lock. Resulting
2150 inconsistency led to false short-reads, that were cached and later
2151 used by ->prepare_write() to fill in partially written page,
2152 leading to data loss.
2155 Frequency : always, if lconf --abort_recovery used
2157 Description: lconf --abort_recovery fails with 'Operation not supported'
2158 Details : lconf was attempting to abort recovery on the MDT device and not
2161 Severity : enhancement
2163 Description: remove cleanup logs
2164 Details : replace lconf-generated cleanup logs with lustre internal
2165 cleanup routines. Eliminates the need for client-cleanup and
2168 Severity : enhancement
2170 Description: add support for EAs (user and system) on lustre filesystems
2171 Details : it is now possible to store extended attributes in the Lustre
2172 client filesystem, and with the user_xattr mount option it
2173 is possible to allow users to store EAs on their files also
2175 Severity : enhancement
2177 Description: Add possibility (config option) to show minimal available OST free
2179 Details : When compiled with --enable-mindf configure option, statfs(2)
2180 (and so, df) will return least minimal free space available from
2181 all OSTs as amount of free space on FS, instead of summary of
2182 free spaces of all OSTs.
2184 Severity : enhancement
2186 Description: do not expand extent locks acquired on OST-side
2187 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
2188 by server: they are not cached anyway.
2191 Frequency : when mmap is used/binaries executed from Lustre
2193 Description: Unmmap pages before throwing them away from read cache.
2194 Details : llap_shrink cache now attempts to unmap pages before discarding
2195 them (if unmapping failed - do not discard). SLES9 kernel has
2196 extra checks that trigger if this unmapping is not done first.
2201 Description: lconf didn't resolve symlinks before checking to see whether a
2202 given mountpoint was already in use
2205 Frequency : when migrating failover services
2206 Bugzilla : 6395, 9514
2207 Description: When migrating a subset of services from a node (e.g. failback
2208 from a failover service node) the remaining services would
2209 time out and evict clients.
2210 Details : lconf --force (implied by --failover) sets the global obd_timeout
2211 to 5 seconds in order to quickly disconnect, but this caused
2212 other RPCs to time out too quickly. Do not change the global
2213 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
2215 Severity : enhancement
2216 Frequency : if MDS is started with down OST
2217 Bugzilla : 9439,5706
2218 Description: Allow startup/shutdown of an MDS without depending on the
2219 availability of the OSTs.
2220 Details : Asynchronously call mds_lov_synchronize during MDS startup.
2221 Add appropriate locking and lov-osc refcounts for safe
2222 cleaning. Add osc abort_inflight calls in case the
2223 synchronize never started.
2226 Frequency : occasional (Cray XT3 only)
2228 Description: root not authorized to access files in CRAY_PORTALS environment
2229 Details : The client process capabilities were not honoured on the MDS in
2230 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
2231 been accessed by an authorized user then root was able to access
2232 the file on the local client also. The root user capabilities
2233 are now allowed on the MDS, as this environment has secure UID.
2236 Frequency : occasional
2238 Description: ldiskfs "too long searching" message happens too often
2239 Details : A debugging message (otherwise harmless) prints too often on
2240 the OST console. This has been reduced to only happen when
2241 there are fragmentation problems on the filesystem.
2246 Description: Division by zero in statfs when all OSCs are inactive
2247 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
2248 lov_statfs divides by value returned by lov_get_stripecnt().
2252 Bugzilla : 9489, 3273
2253 Description: First write from each client to each OST was only 4kB in size,
2254 to initialize client writeback cache, which caused sub-optimal
2255 RPCs and poor layout on disk for the first writen file.
2256 Details : Clients now request an initial cache grant at (re)connect time
2257 and so that they can start streaming writes to the cache right
2258 away and always do full-sized RPCs if there is enough data.
2259 If the OST is rebooted the client also re-establishes its grant
2260 so that client cached writes will be honoured under the grant.
2265 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
2266 Details : Now I/O RPCs go to different portal number and (presumably) fast
2267 lock requests (and glimses) and other RPCs get their own service
2268 threads pool that should be able to service those RPCs
2271 Severity : enhancement
2273 Description: Ability to exchange lustre version between client and servers and
2274 issue warnings at client side if client is too old. Also for
2275 liblustre clients there is ability to refuse connection of too old
2277 Details : New 'version' field is added to connect data structure that is
2278 filled with version info. That info is later checked by server and
2282 Frequency : rare, liblustre only.
2283 Bugzilla : 9296, 9581
2284 Description: Two simultaneous writes from liblustre at offset within same page
2285 might proceed at the same time overwriting eachother with stale
2287 Details : I/O lock withing llu_file_prwv was released too early, before data
2288 actually was hitting the wire. Extended lock-holding time until
2289 server acknowledges receiving data.
2292 Frequency : extremely rare. Never observed in practice.
2294 Description: avoid generating lustre_handle cookie of 0.
2295 Details : class_handle_hash() generates handle cookies by incrementing
2296 global counter, and can hit 0 occasionaly (this is unlikely, but
2297 not impossible, because initial value of cookie counter is
2298 selected randonly). Value of 0 is used as a sentinel meaning
2299 "unassigned handle" --- avoid it. Also coalesce two critical
2300 sections in this function into one.
2302 Severity : enhancement
2304 Description: allow liblustre clients to delegate truncate locking to OST
2305 Details : To avoid overhead of locking, liblustre client instructs OST to
2306 take extent lock in ost_punch() on client's behalf. New connection
2307 flag is added to handle backward compatibility.
2309 Severity : enhancement
2310 Bugzilla : 4928, 7341, 9758
2311 Description: allow number of OST service threads to be specified
2312 Details : a module parameter allows the number of OST service threads
2313 to be specified via "options ost ost_num_threads={N}" in the
2314 OSS's /etc/modules.conf or /etc/modprobe.conf.
2318 Bugzilla : 6146, 9635, 9895
2319 Description: servers crash with bad pointer in target_handle_connect()
2320 Details : In rare cases when a client is reconnecting it was possible that
2321 the connection request was the last reference for that export.
2322 We would temporarily drop the export reference and get a new
2323 one, but this may have been the last reference and the export
2324 was just destroyed. Get new reference before dropping old one.
2326 Severity : enhancement
2327 Frequency : if client is started with failover MDS
2329 Description: Allow multiple MDS hostnames in the mount command
2330 Details : Try to read the configuration from all specified MDS
2331 hostnames during a client mount in case the "primary"
2334 Severity : enhancement
2336 Description: Stop sending data to evicted clients as soon as possible.
2337 Details : Check if the client we are about to send or are sending data to
2338 was evicted already. (Check is done every second of waiting,
2339 for which l_wait_event interface was extended to allow checking
2340 of exit condition at specified intervals).
2343 Frequency : rare, normally only when NFS exporting is done from client
2345 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
2347 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
2350 Frequency : always, if srand() is called before liblustre initialization
2352 Description: Liblustre uses system PRNG disturbing its usage by user application
2353 Details : Introduce internal to lustre fast and high-quality PRNG for
2354 lustre usage and make liblustre and some other places in generic
2355 lustre code to use it.
2357 Severity : enhancement
2358 Bugzilla : 9477, 9557, 9870
2359 Description: Verify that the MDS configuration logs are updated when xml is
2360 Details : Check if the .xml configuration logs are newer than the config
2361 logs stored on the MDS and report an error if this is the case.
2362 Request --write-conf, or allow starting with --old_conf.
2364 Severity : enhancement
2366 Description: Handle symlinks in the path when checking if Lustre is mounted.
2367 Details : Resolve intermediate symlinks when checking if a client has
2368 mounted a filesystem to avoid duplicate client mounts.
2373 Description: lconf can hit an error exception but still return success.
2374 Details : The lconf command catches the Command error exception at the top
2375 level script context and will exit with the associated exit
2376 status, but doesn't ensure that this exit status is non-zero.
2381 Description: failure of ptlrpc thread startup can cause oops
2382 Details : Starting a ptlrpc service thread can fail if there are a large
2383 number of threads or the server memory is very fragmented.
2384 Handle this without oopsing.
2387 Frequency : always, only if liblustre and non-default acceptor port was used
2389 Description: liblustre cannot connect to servers with non-default acceptor port
2390 Details : tcpnal_set_default_params() was not called and was therefore
2391 ignoring the environment varaible TCPNAL_PORT, as well as other
2392 TCPNAL_ environment variables
2397 Description: two objects could be created on the same OST for a single file
2398 Details : If an OST is down, in some cases it was possible to create two
2399 objects on a single OST for a single file. No problems other
2400 than potential performance impact and spurious error messages.
2404 Bugzilla : 5681, 9562
2405 Description: Client may oops in ll_unhash_aliases
2406 Details : Client dcache may become inconsistent in race condition.
2407 In some cases "getcwd" can fail if the current directory is
2413 Description: Inode refcounting problems in NFS export code
2414 Details : link_raw functions used to call d_instantiate without obtaining
2415 extra inode reference first.
2419 Bugzilla : 9942, 9903
2420 Description: Referencing freed requests leading to crash, memleaks with NFS.
2421 Details : We used to require that call to ll_revalidate_it was always
2422 followed by ll_lookup_it. Also with revalidate_special() it is
2423 possible to call ll_revalidate_it() twice for the same dentry
2424 even if first occurence returned success. This fix changes semantic
2425 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
2426 reference on a request referred from the intent.
2427 ll_intent_release() then releases such a request.
2430 Frequency : rare, normally benchmark loads only
2432 Description: unlinked inodes were kept in memory on the client
2433 Details : If a client is repeatedly creating and unlinking files it
2434 can accumulate a lot of stale inodes in the inode slab cache.
2435 If there is no other client load running this can cause the
2436 client node to run out of memory. Instead flush old inodes
2437 from client cache that have the same inode number as a new inode.
2440 Frequency : SLES9 2.6.5 kernel and long filenames only
2441 Bugzilla : 9969, 10379
2442 Description: utime reports stale NFS file handle
2443 Details : SLES9 uses out-of-dentry names in some cases, which confused
2444 the lustre dentry revalidation. Change it to always use the
2448 Frequency : rare, unless heavy write-truncate concurrency is continuous
2449 Bugzilla : 4180, 6984, 7171, 9963, 9331
2450 Description: OST becomes very slow and/or deadlocked during object unlink
2451 Details : filter_destroy() was holding onto the parent directory lock
2452 while truncating+unlinking objects. For very large objects this
2453 may block other threads for a long time and slow overall OST
2454 responsiveness. It may also be possible to get a lock ordering
2455 deadlock in this case, or run out of journal credits because of
2456 the combined truncate+unlink. Solution is to do object truncate
2457 first in one transaction without parent lock, and then do the
2458 final unlink in a new transaction with the parent lock. This
2459 reduces the lock hold time dramatically.
2462 Frequency : rare, 2.4 kernels only
2464 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
2465 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
2466 before unmounting their filesystem in order to avoid deadlock.
2467 The kernel_locked() function in 2.4 kernels only checks whether
2468 the kernel lock is held, not whether it is this process that is
2469 holding it as 2.6 kernels do.
2474 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
2475 Details : The client ptlrpc code may be trying to reconnect to a down
2476 server before a previous connection attempt has timed out.
2477 Increase the reconnect interval to be longer than the connection
2478 timeout interval to avoid sending duplicate connections to
2482 Frequency : echo_client brw_test command
2484 Description: fix echo_client to work with OST preallocated code
2485 Details : OST preallocation code (5137) didn't take echo_client IO path
2486 into account: echo_client calls filter methods outside of any
2487 OST thread and, hence, there is no per-thread preallocated
2488 pages and buffers to use. Solution: hijack pga pages for IO. As
2489 a byproduct, this avoids unnecessary data copying.
2493 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
2494 Description: Client can oops in mdc_commit_close() after open replay
2495 Details : It was possible for the MDS to return an open request with no
2496 transaction number in mds_finish_transno() if the client was
2497 evicted, but without actually returning an error. Clients
2498 would later try to replay that open and may trip an assertion
2499 Simplify the client close codepath, and always return an error
2500 from the MDS in case the open is not successful.
2503 Frequency : rare, 2.6 OSTs only
2505 Description: OST may deadlock under high load on fragmented files
2506 Details : If there was a heavy load and highly-fragmented OST filesystems
2507 it was possible to have all the OST threads deadlock waiting on
2508 allocation of biovecs, because the biovecs were not released
2509 until the entire RPC IO was completed. Instead, release biovecs
2510 as soon as they are complete to ensure forward IO progress.
2512 Severity : enhancement
2514 Description: Support for specifying external journal device at mount
2515 Details : If an OST or MDS device is formatted with an external journal
2516 device, this device major/minor is stored in the ext3 superblock
2517 and may not be valid for failover. Allow detecting and
2518 specifying the external journal at mount time.
2523 Description: Mounting an MDS with pending unlinked files may cause oops
2524 Details : target_finish_recovery() calls mds_postrecov() which returned
2525 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
2526 considers this an error and immediately begins cleaning up the
2527 lov, just after starting the mds_lov process
2529 Severity : enhancement
2531 Description: Implement 'lfs df' to report actual free space on per-OST basis
2532 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
2533 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
2534 usage of objects; '-h' to report in human readable format.
2536 ------------------------------------------------------------------------------
2538 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
2545 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
2546 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
2547 at startup during orphan unlinking. Instead, skip buddy update
2548 before setup, as it will be regenerated after recovery is complete.
2553 Description: If an OST is inactive, its locks might reference stale inodes.
2554 Details : lov_change_cbdata() must iterate over all namespaces, even if
2555 they are inactive to clear inode references from the lock.
2557 Severity : enhancement
2558 Frequency : occasional, if non-standard max_dirty_mb used
2560 Description: Client will block write RPCs if not enough grant
2561 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
2562 then the client will block writes while waiting for another RPC
2563 to complete instead of consuming its dirty limit. With change
2564 we get improved performance when max_dirty_mb is small.
2566 Severity : enhancement
2567 Bugzilla : 3389, 6253
2568 Description: Add support for supplementary groups on the MDS.
2569 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
2570 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
2571 lookups for user supplementary groups into a cache.
2575 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
2576 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
2577 for liblustre O_EXCL is enforced by MDS.
2581 Description: readdir never returns NULL in liblustre.
2582 Details : Corrected llu_iop_getdirentries logic, to return offset of next
2583 dentry in struct dirent.
2587 Frequency : liblustre only, depends on application IO pattern
2588 Description: liblustre clients evicted if not contacting servers
2589 Details : Don't put liblustre clients into the ping_evictor list, so
2590 they will not be evicted by the pinger ever.
2592 Severity : enhancement
2594 Description: Add ability to evict clients by NID from MDS.
2595 Details : By echoing "nid:$NID" string into
2596 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
2597 $NID would be instantly evicted from this MDS and from all active
2598 OSTs connected to it.
2602 Description: Do not query file size twice, somewhat slowing stat(2) calls.
2603 Details : lookup_it_finish() used to query file size from OSTs that was not
2608 Description: service threads change working directory to that of init
2609 Details : Starting lustre service threads may pin the working directory
2610 of the parent thread, making that filesystem busy. Threads
2611 now change to the working directory of init to avoid this.
2615 Frequency : during shutdown only
2616 Description: shutdown with a failed MDS or OST can cause unmount to hang
2617 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
2622 Frequency : 2.6 only
2623 Description: chmod/chown may include an extra supplementary group
2624 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
2625 supplementary group and if none is specified this is used.
2628 Bugzilla : 5479 (6816)
2630 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
2631 Details : If lookup is in progress on a file that is unlinked we might try
2632 to revalidate the inode and fail in revalidate after lookup is
2633 complete and ll_file_open() enqueues the open again but
2634 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
2637 Frequency : always, if lconf --abort_recovery used
2639 Description: lconf --abort_recovery fails with 'Operation not supported'
2640 Details : lconf was attempting to abort recovery on the MDT device and not
2643 ------------------------------------------------------------------------------
2645 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
2650 Frequency : rare (only unsupported configurations with a node running as an
2652 Bugzilla : 6514, 5137
2653 Description: Mounting a Lustre file system on a node running as an OST could
2655 Details : OSTs now preallocates memory needed to write out data at
2656 startup, instead of when needed, to avoid having to
2657 allocate memory in possibly low memory situations.
2658 Specifically, if the file system is mounted on on OST,
2659 memory pressure could force it to try to write out data,
2660 which it needed to allocate memory to do. Due to the low
2661 memory, it would be unable to do so and the node would
2662 become unresponsive.
2664 Severity : enhancement
2666 Description: Addition of lconf --service command line option
2667 Details : lconf now accepts a '--service <arg>' option, which is
2668 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
2670 Severity : enhancement
2672 Description: Failover mode is now the default for OSTs.
2673 Details : By default, OSTs will now run in failover mode. To return to
2674 the old behaviour, add '--failout' to the lmc line for OSTs.
2676 Severity : enhancement
2678 Description: Health checks are now provided for MDS and OSTs
2679 Details : Additional detailed health check information on MSD and OSTs
2680 is now provided through the procfs health_check value.
2683 Frequency : occasional, depends on IO load
2685 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
2686 after numerous create/delete cycles
2687 Details : The ext3 inode allocation policy would not allocate new inodes
2688 very well on the OSTs because there are no new directories
2689 being created. Instead we look for groups with free space if
2690 the parent directories are nearly full.
2695 Description: Network or server problems during mount may cause partially
2696 mounted clients instead of returning an error.
2697 Details : The config llog parsing code may overwrite the error return
2698 code during mount error handling, returning success instead
2704 Description: MDS can fail to allocate large reply buffers
2705 Details : After long uptimes the MDS can fail to allocate large reply
2706 buffers (e.g. zconf client mount config records) due to memory
2707 fragmentation or consumption by the buffer cache. Preallocate
2708 some large reply buffers so that these replies can be sent even
2709 under memory pressure.
2713 Frequency : rare (liblustre)
2714 Description: fsx running with liblustre complained that using truncate() to
2715 extend the file doesn't work. This patch corrects that issue.
2716 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
2717 ATTR_SIZE and lsm use in llu_setattr_raw.
2721 Frequency : rare, only 2.6 kernels
2722 Description: Unusual file access patterns on the MDS may result in inode
2723 data being lost in very rare circumstances.
2724 Details : Bad interaction between the ea-in-inode patch and the "no-read"
2725 code in the 2.6 kernel caused the inode and/or EA data not to
2726 be read from disk, causing single-file corruption.
2730 Frequency : rare, only 2.6 filesystems using extents
2731 Description: Heavy concurrent write and delete load may cause data corruption.
2732 Details : It was possible under high-load situations to have an extent
2733 metadata block in the block device cache from a just-unlinked
2734 file overwrite a newly-allocated data block. We now unmap any
2735 metadata buffers that alias just-allocated data blocks.
2739 Frequency : filesystems with default stripe_count larger than 77
2740 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
2741 Details : lconf specifies an inode size of 4096 bytes when the default
2742 stripe_count is larger than 77. This conflicts with the default
2743 inode density of 1 per 4096 bytes. Allocate smaller inodes in
2744 this case to avoid pinning too much memory for large EAs.
2746 ------------------------------------------------------------------------------
2748 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
2753 Frequency : rare (extremely heavy IO load with hundreds of clients)
2755 Description: Client is evicted, gets IO error writing to file
2756 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
2757 caused clients to be evicted for AST timeouts. The fixes in
2758 bug 5192 mean we no longer need to have such short AST timeouts
2759 so ldlm_timeout has been increased.
2762 Frequency : occasional during --force or --failover shutdown under load
2763 Bugzilla : 5949, 4834
2764 Description: Server oops/LBUG if stopped with --force or --failover under load
2765 Details : a collection of import/export refcount and cleanup ordering
2766 issues fixed for safer force cleanup
2769 Frequency : only filesystems larger than 120 OSTs
2770 Bugzilla : 5990, 6223
2771 Description: lfs getstripe would oops on a very large filesystem
2772 Details : lov_getconfig used kfree on vmalloc'd memory
2775 Frequency : only filesystems exporting via NFS to Solaris 10 clients
2776 Bugzilla : 6242, 6243
2777 Description: reading from files that had been truncated to a non-zero size
2778 but never opened returned no data
2779 Details : ll_file_read() reads zeros from no-object files to EOF
2784 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
2785 Details : There's little harm in aborting MDS/OSS recovery and letting it
2786 try again, so I removed the LASSERT and return an error instead.
2788 Severity : enhancement
2790 Description: New debugging infrastructure for tracking down data corruption
2791 Details : The I/O checksum code was replaced to: (a) control it at runtime,
2792 (b) cover more of the client-side code path, and (c) try to narrow
2793 down where problems occurred
2797 Bugzilla : 3819, 4364, 4397, 6313
2798 Description: Racing close and eviction MDS could cause assertion in mds_close
2799 Details : It was possible to get multiple mfd references during close and
2800 client eviction, leading to one thread referencing a freed mfd.
2802 Severity: : enhancement
2803 Bugzilla : 3262, 6359
2804 Description: Attempts to reconnect to servers are now more aggressive.
2805 Details : This builds on the enhanced upcall-less recovery that was added
2806 in 1.4.2. When trying to reconnect to servers, clients will
2807 now try each server in the failover group every 10 seconds. By
2808 default, clients would previously try one server every 25 seconds.
2813 Description: After recovery, certain operations trigger a failed
2814 assertion on a client.
2815 Details : Failing over an mds, using lconf -d --failover, while a
2816 client was doing a readdir() call would cause the client to
2817 LBUG after recovery completed and the readdir() was resent.
2819 Severity : enhancement
2821 Description: Default groups are now added by lconf
2822 Details : You can now run lconf --group <servicename> without having to
2823 manually add groups with lmc.
2826 Frequency : occasional
2828 Description: Nodes with an elan id of 0 trigger a failed assertion
2831 Frequency : always when accessing e.g. tty/console device nodes
2833 Description: tty and some other devices nodes cannot be used on lustre
2834 Details : file's private_data field is used by device data and lustre
2835 values in there got lost. New field was added to struct file to
2836 store fs-specific private data.
2839 Frequency : when exporting Lustre via NFS
2841 Description: NFSD failed occasionally when looking up a path component
2842 Details : NFSD is looking up ".." which was broken in ext3 directories
2843 that had grown large enough to become hashed.
2846 Frequency : Clusters with multiple interfaces not on the same subnet
2848 Description: Nodes will repeatedly try to reconnect to an interface which it
2849 cannot reach and report an error to the log.
2850 Details : Extra peer list entries will be created by lconf with some peers
2851 unreachable. lconf now validates the peer before adding it.
2854 Frequency : Only if a default stripe is set on the filesystem root.
2856 Description: Setting a default stripe on the filesystem root prevented the
2857 filesystem from being remounted.
2858 Details : The client was sending extra request flags in the root getattr
2859 request and did not allocate a reply buffer for the dir EA.
2862 Frequency : occasional, higher if lots of files are accessed by one client
2863 Bugzilla : 6159, 6097
2864 Description: Client trips assertion regarding lsm mismatch/magic
2865 Details : While revalidating inodes the VFS looks up inodes with ifind()
2866 and in rare cases can find an inode that is being freed.
2867 The ll_test_inode() code will free the lsm during ifind()
2868 when it finds an existing inode and then the VFS later attaches
2869 this free lsm to a new inode.
2873 Bugzilla : 6422, 7030
2874 Description: MDS deadlock between mkdir and client eviction
2875 Details : Creating a new file via mkdir or mknod (starting a transaction
2876 and getting the ns lock) can deadlock with client eviction
2877 (gets ns lock and trying to finish a synchronous transaction).
2880 Frequency : occasional
2881 Description: While starting a server, the fsfilt_ext3 module could not be
2883 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
2884 kernels. Previously, lconf would still use the ext3 name
2885 when trying to load modules. Now, it will correctly use
2886 ext3 on 2.4 and ldiskfs on 2.6.
2888 Severity : enhancement
2889 Description: The default stripe count has been changed to 1
2890 Details : The interpretation of the default stripe count (0, to lfs
2891 or lmc) has been changed to mean striping across a single
2892 OST, rather than all available. For general usage we have
2893 found a stripe count of 1 or 2 works best.
2895 Severity : enhancement
2896 Description: Add support for compiling against Cray portals.
2897 Details : Conditional compiling for some areas that are different
2901 Frequency : occasional
2902 Bugzilla : 6409, 6834
2903 Description: Creating files with an explicit stripe count may lead to
2904 a failed assertion on the MDS
2905 Details : If some OSTs are full or unavailable, creating files may
2906 trigger a failed assertion on the MDS. Now, Lustre will
2907 try to use other servers or return an error to the
2911 Frequency : occasional
2913 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
2914 caused lock timeout during readahead (since 1.4.2).
2915 Details : Processes doing readahead might match a lock that hasn't been
2916 granted yet if there are overlapping and conflicting lock
2917 requests. The readahead process waits on ungranted lock
2918 (original lock is CBPENDING), while OST waits for that process
2919 to cancel CBPENDING read lock and eventually evicts client.
2921 Severity : enhancement
2923 Description: Initial enabling of flock support for clients
2924 Details : Implements fcntl advisory locking and file status functions.
2925 This feature is provided as an optional mount flag (default
2926 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
2927 locking are implemented yet, and those that are are not guaranteed
2928 to be completely correct in production environments.
2929 mount -t lustre -o [flock|noflock] ...
2932 Frequency : occasional
2934 Description: OSTs running 2.4 kernels but with extents enabled might trip an
2935 assertion in the ext3 JBD (journaling) layer.
2936 Details : The b_committed_data struct is protected by the big kernel lock
2937 in 2.4 kernels, serializing journal_commit_transaction() and
2938 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
2939 access to this struct. In 2.6 kernels there is finer grained
2940 locking to improve SMP performance of the JBD layer.
2944 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
2949 Description: merge and cleanup kernel patches.
2952 -----------------------------------------------------------------------------
2954 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
2956 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
2957 versions of Lustre. Please update all servers and clients to
2958 version 1.4.2 or later at the same time. You must also run
2959 "lconf --write-conf {config}.xml" on the MDS while it is stopped
2960 to update the configuration logs.
2962 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
2963 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
2964 - swab llog records of type '0' so we get proper header size/idx (5861)
2965 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
2966 - fix rename of one directory over another leaking an inode (5953)
2967 - avoid SetPageDirty on 2.6 (5981)
2968 - don't re-add just-being-destroyed locks to the waiting list (5653)
2969 - when creating new directories, inherit the parent's custom
2970 striping settings if present parent (3048)
2971 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
2972 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
2973 - don't hold client locks on temporary worklist from l_lru (5666)
2974 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
2975 - automatically evict dead clients (5921)
2976 - Update file size properly in create+truncate+fstat case (6196)
2977 - Do not unhash mountpoint dentries, do not allow removal of
2979 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
2980 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
2981 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
2982 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
2983 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
2984 - Correctly handle reads of files with no objects (6243)
2985 - lctl recover will also mark a device active if deactivate used (5933)
2987 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
2988 - allow --write-conf on an MDS with different nettype than client (5619)
2989 - don't write config llogs to MDS for mounts not from that MDS (5617)
2990 - lconf should create multiple TCP connections from a client (5201)
2991 - init scripts are now turned off by default; run chkconfig --on
2992 lustre and chkconfig --on lustrefs to use them
2993 - upcalls are no longer needed for clients to recover to failover
2995 - add --abort-recovery option to lconf to abort recovery on device
2997 - add support for an arbitrary number of OSTs (3026)
2998 - Quota support protocol changes.
2999 - forward compatibility changes to wire structs (6007)
3000 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
3001 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
3002 - improved "lustre status" script
3003 - initialize blocksize for non-regular files (6062)
3004 - added --disable-server and --disable-client configure options (5782)
3005 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
3006 - Vanilla 2.4.29 support
3007 - increase maximum number of obd devices to 520 (6242)
3008 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
3009 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
3010 SLES 9 2.6.5 kernels
3011 - limit stripes per file to 160 (the maximum EA size) (6093)
3013 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3016 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
3017 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
3018 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
3019 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
3020 - small ext3 extents cleanups and fixes (5733)
3021 - improved mballoc code, several small races and bugs fixed (5733, 5638)
3022 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
3023 - avoid needless client->OST connect, fix handle mismatch (5317)
3024 - fix DLM error path that led to out-of-sync client, long delays (5779)
3025 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
3026 - fix several locking issues related to i_size (5492,5624,5654,5672)
3027 - don't move pending lock onto export if it is already evicted (5683)
3028 - fix kernel oops when creating .foo in unlinked directory (5548)
3029 - fix deadlock in obdfilter statistics vs. object create (5811)
3030 - use time_{before,after} to avoid timer jiffies wrap (5882)
3031 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
3032 - Do not leak request if server was not able to process it (5154)
3033 - If mds_open unable to find parent dir, make that negative lookup(5154)
3034 - don't create new directories with extent-mapping (5909, 5936)
3036 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
3037 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
3038 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
3039 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
3040 - support for RHEL4 kernel on i686 (5773)
3041 - provide error messages when incompatible logs are encountered (5898)
3043 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
3044 * version 1.4.0.10 (1.4.1 release candidate 1)
3046 - don't keep a lock reference when lock is not granted (4238)
3047 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3048 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
3049 - drop import inflight refcount on signal_completed_replay error (5255)
3050 - unlock page after async write error during send (3677)
3051 - handle missing objects in filter_preprw_read properly (5265)
3052 - no transno return for symlink open, don't save no-trasno open (3440)
3053 - don't try to complete elan receive that already failed (4012)
3054 - free RPC server reply state on error (5406)
3055 - clean up thread from ptlrpc_start_thread() on error (5160)
3056 - readahead could read extra page into cache that wasn't ejected (5388)
3057 - prevent races in class_attach/setup/cleanup/detach (5260)
3058 - don't dereference de->d_inode after l_dput of de (5458)
3059 - use "int" for stripe value returned from lock_to_stripe (5544)
3060 - mballoc allocation and error-checking fixes in 2.6 (5504)
3061 - block device patches to fix I/O request sizes in 2.6 (5482)
3062 - look up hostnames for IB nals (5602)
3063 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
3064 - don't start multiple acceptors for the same port (5277)
3065 - fix incorrect LASSERT in mds_getattr_name (5635)
3066 - export a proc file for general "ping" checking (5628)
3067 - fix "lfs check" to not block when the MDS is down (5628)
3069 - service request history (4965)
3070 - put {ll,lov,osc}_async_page structs in a single slab (4699)
3071 - create an "evict_client" /proc entry on OSTs, like the MDS has
3072 - fix mount usage message, return errors per mount(8) (5168)
3073 - change grep [] to grep "[]" in tests so they work in more UMLs
3074 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
3075 - remove ancient LOV_MAGIC_V0 EA support (5047)
3076 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
3077 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
3078 - allow readahead allocations to fail when low on memory (5383)
3079 - mmap locking landed again, after considerable improvement (2828)
3080 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
3082 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
3085 - send OST transaction number in read/write reply to free req (4966)
3086 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3087 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3088 - the watchdog thread now runs as interruptible (5246)
3089 - flock/lockf fixes (but it's still disabled, pending 5135)
3090 - don't use EXT3 constants in llite code (5094)
3091 - memory shortage at startup could cause assertion (5176)
3093 - reorganization of lov code
3094 - single portals codebase
3096 - add extents/mballoc support (5025)
3097 - direct I/O reads in the obdfilter (4048)
3098 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
3100 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3103 - send OST transaction number in read/write reply to free req (4966)
3104 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3105 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3106 - the watchdog thread now runs as interruptible (5246)
3107 - handle missing objects in filter_preprw_read properly (5265)
3108 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3109 - drop import inflight refcount on signal_completed_replay error (5255)
3110 - unlock page after async write error during send (3677)
3111 - return original error code on reconstructed replies (3761)
3112 - no transno return for symlink open, don't save no-trasno open (3440)
3114 - add pid to ldlm debugging output (4922)
3115 - bump the watchdog timeouts -- we can't handle 30sec yet
3116 - extra debugging for orphan dentry/inode bug (5259)
3118 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
3121 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
3122 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
3123 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
3124 - fix NULL dereference in /proc/sys/portals/routes (4827)
3125 - allow failed mdc_close() operations to be interrupted (4561)
3126 - stop precreate on OST before MDS would time out on it (4778)
3127 - don't send partial-page writes before EOF from client (4410)
3128 - discard client grant for sub-page writes on large-page clients (4520)
3129 - don't free dentries not owned by NFS code, check generation (4806)
3130 - fix lsm leak if mds_create_objects() fails (4801)
3131 - limit debug_daemon file size, always print CERROR messages (4789)
3132 - use transno after validating reply (3892)
3133 - process timed out requests if import state changes (3754)
3134 - update mtime on OST during writes, return in glimpse (4829)
3135 - add mkfsoptions to LDAP (4679)
3136 - use ->max_readahead method instead of zapping global ra (5039)
3137 - don't interrupt __l_wait_event() during strace
3139 - add software watchdogs to catch hung threads quickly (4941)
3140 - make lustrefs init script start after nfs is mounted
3141 - fix CWARN/ERROR duplication (4930)
3142 - return async write errors to application if possible (2248)
3143 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
3144 - print NAL number in %x format (4645)
3145 - update barely-supported suse-2.4.21-171 series (4842)
3146 - support for sles 9 %post scripts
3147 - support for building 2.6 kernel-source packages
3148 - support for sles km_* packages
3150 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
3153 - ignore -ENOENT errors in osc_destroy (3639)
3154 - notify osc create thread that OSC is being cleaned up (4600)
3155 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
3156 - reconstruct ost_handle() like mds_handle() (4657)
3157 - create a new thread to do import eviction to avoid deadlock (3969)
3158 - let lconf resolve symlinked-to devices (4629)
3159 - don't unlink "objects" from directory with default EA (4554)
3160 - hold socknal file ref over connect in case target is down (4394)
3161 - allow more than 32000 subdirectories in a single directory (3244)
3162 - fix blocks count for O_DIRECT writes (3751)
3163 - OST returns ENOSPC from object create when no space left (4539)
3164 - don't send truncate RPC if file size isn't changing (4410)
3165 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
3166 - bind to privileged port in socknal and tcpnal (3689)
3168 - rate limit CERROR/CWARN console message to avoid overload (4519)
3169 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
3170 - basic mmap support (3918)
3171 - kernel patch series update from b1_4 (4711)
3173 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
3176 - avoid crash during MDS cleanup with OST shut down (2775)
3177 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
3178 - don't use bad inodes on the MDS (3744)
3179 - dynamic object preallocation to improve recovery speed (4236)
3180 - don't hold spinlock over lock dumping or change debug flags (4401)
3181 - don't zero obd_dev when it is force cleaned (3651)
3182 - print grants to console if they go negative (4431)
3183 - "lctl deactivate" will stop automatic recovery attempts (3406)
3184 - look for existing locks in ldlm_handle_enqueue() (3764)
3185 - don't resolve lock handle twice in recovery avoiding race (4401)
3186 - revalidate should check working dir is a directory (4134)
3188 - don't always mark "slow" obdfilter messages as errors (4418)
3190 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
3193 - don't close LustreDB during write_conf until it is done (3860)
3194 - fix typo in lconf for_each_profile (3821)
3195 - allow dumping logs from multiple threads at one time (3820)
3196 - don't allow multiple threads in OSC recovery (3812)
3197 - fix debug_size parameters (3864)
3198 - fix mds_postrecov to initialize import for llog ctxt (3121)
3199 - replace config semaphore with spinlock (3306)
3200 - be sure to send a reply for a CANCEL rpc with bad export (3863)
3201 - don't allow enqueue to complete on a destroyed export (3822)
3202 - down write_lock before checking llog header bitmap (3825)
3203 - recover from lock replay timeout (3764)
3204 - up llog sem before sending rpc (3652)
3205 - reduce ns lock hold times when setting kms (3267)
3206 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
3207 - fix NULL deref and obd_dev leak on setup error (3312)
3208 - replace some LBUG about llog ops with error handling (3841)
3209 - don't match INVALID dentries from d_lookup and spin (3784)
3210 - hold dcache_lock while marking dentries INVALID and hashing (4255)
3211 - fix invalid assertion in ptlrpc_set_wait (3880)
3213 - add libwrap support for the TCP acceptor (3996)
3214 - add /proc/sys/portals/routes for non-root route listing (3994)
3215 - allow setting MDS UUID in .xml (2580)
3216 - print the stack of a process that LBUGs (4228)
3218 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
3221 - don't cleanup request in ll_file_open() on failed MDS open (3430)
3222 - make sure to unset replay flag from failed open requests (3440)
3223 - if default stripe count is 0, use OST count for inode size (3636)
3224 - update parent mtime/ctime on client for create/unlink (2611)
3225 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
3226 - free recovery state on server during a forced cleanup (3571)
3227 - unregister_reply for resent reqs (3063)
3228 - loop back devices mounting and status check on 2.6 (3563)
3229 - fix resource-creation race that can provoke i_size == 0 (3513)
3230 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
3231 - more debugging for page-accounting assertion (3746)
3232 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
3233 - avoid deadlock after precreation failure (3758)
3234 - fix race and lock order deadlock in orphan handling (3450, 3750)
3235 - add validity checks when grabbing inodes from l_ast_data (3599)
3237 - add /proc/.../recovery_status to obdfilter (3428)
3238 - lightweight CDEBUG infrastructure, debug daemon (3668)
3239 - change default OSC RPC parameters to be better on small clusters
3240 - turn off OST read cache for files smaller than 32MB
3241 - install man pages and include them in rpms (3100)
3242 - add new init script for (un)mounting lustre filesystems (2593)
3243 - run chkconfig in %post for init scripts (3701)
3244 - drop scimac NAL (unmaintained)
3246 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
3249 - clean kiobufs before and after use (3485)
3250 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
3251 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
3252 - change init script to fail more clearly if not run as root (1528)
3253 - allow clients to reconnect during replay (1742)
3254 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
3255 - don't do DNS lookups on NIDs too small for IP addresses (3442)
3256 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
3257 - fix cond_resched (3554)
3258 - only evict unfinished clients after recovery (3515)
3259 - allow bulk resend, prevent data loss (3570)
3260 - dynamic ptlrpc request buffer allocation (2102)
3261 - don't allow unlinking open directory if it isn't empty (2904)
3262 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
3263 - remove extraneous obd dereference causing LASSERT failure (3334)
3264 - don't use get_cycles() when creating temp. files on the mds (3156)
3265 - hold i_sem when setting i_size in ll_extent_lock() (3564)
3266 - handle EEXIST for set-stripe, set proper directory name (3336)
3268 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
3269 - fix ksocknal_fmb_callback() error messages (2918)
3271 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
3274 - don't copy lvb into (possibly NULL) reply on error (2983)
3275 - don't deref dentry after dput, don't free lvb on error (2922)
3276 - use the kms to determine writeback rpc length (2947)
3277 - increment oti_logcookies when osc is inactive (2948)
3278 - update client's i_blocks count via lvb messages (2543)
3279 - handle intent open/close of special files properly (1557)
3280 - mount MDS with errors=remount-ro, like obdfilter (2009)
3281 - initialize lock handle to avoid ASSERT on error cleanup (3057)
3282 - don't use cancelling-locks' kms values (2947)
3283 - use highest lock extent for kms, not last one (2925)
3284 - don't dereference ERR_PTR() dentry in error handling path (3107)
3285 - fix thread race in portals_debug_dumplog() (3122)
3286 - create lprocfs device entries at setup instead of at attach (1519)
3287 - common AST error handler, don't evict client on completion race (3145)
3288 - zero nameidata in detach_mnt in 2.6 (3118)
3289 - verify d_inode after revalidate_special is valid in 2.6 (3116)
3290 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
3291 - initialize RPC timeout timer earlier for 2.6 (3219)
3292 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
3293 - print nal/nid for unknown nid (3258)
3294 - additional checks for oscc recovery before doing precreate (3284)
3295 - fix ll_extent_lock() error return code for 64-bit systems (3043)
3296 - don't crash in mdc_close for bad permissions on open (3285)
3297 - zero i_rdev for non-device files (3147)
3298 - clear page->private before handing to FS, better assertion (3119)
3299 - tune the read pipeline (3236)
3300 - fix incorrect decref of invalidated dentry (2350)
3301 - provide read-ahead stats and refine rpc in flight stats (3328)
3302 - don't hold journal transaction open across create RPC (3313)
3303 - update atime on MDS at close time (3265)
3304 - close LDAP connection when recovering to avoid server load (3315)
3305 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
3306 - don't leak open file on MDS after open resend (3325)
3307 - serialize filter_precreate and filter_destroy_precreated (3329)
3308 - loop device shouldn't call sync_dev() for nul device (3092)
3309 - clear page cache after eviction (2766)
3310 - resynchronize MDS->OST in background (2824)
3311 - refuse to mount the same filesystem twice on same mountpoint (3394)
3312 - allow llmount to create routes for mounting behind routers (3320)
3313 - push lock cancellation to blocking thread for glimpse ASTs (3409)
3314 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
3315 - fix rare problem with rename on htree directories (3417)
3317 - allow default OST striping configuration per directory (1414)
3318 - fix compilation for qswnal for 2.6 kernels (3125)
3319 - increase maximum number of MDS request buffers for large systems
3320 - change liblustreapi to be useful for external progs like lfsck (3098)
3321 - increase local configuration timeout for slow disks (3353)
3322 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
3324 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3327 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
3328 - don't overwrite extent policy data in reply if lock was blocked (2901)
3329 - drop filter export grants atomically with removal from device (2663)
3330 - del obd_self_export from work_list in class_disconnect_exports (2908)
3331 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
3332 - swab reply message in mdc_close, other PPC fixes (2464)
3333 - fix destroying of named logs (2325)
3334 - overwrite old logs when running lconf --write_conf (2264)
3335 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
3336 - fix race in target_handle_connect (2898)
3337 - mds_reint_create() should take same inode create lock (2926)
3338 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
3339 - don't close files for self_export to avoid uninitialized obd (2936)
3340 - allow MDS with the same name as client node (2939)
3341 - hold dentry reference for closed log files for unlink (2325)
3342 - reserve space for all logs during transactions (2059)
3343 - don't evict page beyond end of stripe extent (2925)
3344 - don't oops on a deleted current working directory (2399)
3345 - handle hard links to targets without a parent properly (2517)
3346 - don't dereference NULL lock when racing during eviction (2867)
3347 - don't grow lock extents when lots of conflicting locks (2919)
3349 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
3352 - account for cache space usage on clients to avoid data loss (974)
3353 - lfsck support in lustre kernel code (2349)
3354 - reduce journal credits needed for BRW writes (2370)
3355 - orphan handling to avoid losing space on client/server crashes
3356 - ptlrpcd can be blocked, stopping ALL progress (2477)
3357 - use lock value blocks to assist in proper KMS, faster stat (1021)
3358 - takes i_sem instead of DLM locks internally on obdfilter (2720)
3359 - recovery for initial connections (2355)
3360 - fixes for mds_cleanup_orphans (1934)
3361 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
3362 - block all file creations until orphan recovery completes (1901)
3363 - client remove rq_connection from request struct (2423)
3364 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
3365 - recovery timer race (2670)
3366 - mdc_close recovey bug (2532)
3367 - ptlrpc cleanup bug (2710)
3368 - mds timeout on local locks (2588)
3369 - namespace lock held during RPCs (2431)
3370 - handle interrupted sync write properly (2503)
3371 - don't try to handle a message that hasn't been replied to (2699)
3372 - client assert failure during cleanup after abort recovery (2701)
3373 - leak mdc device after failed mount (2712)
3374 - ptlrpc_check_set allows timedout requests to complete (2714)
3375 - wait for inflight reqs when ptlrpcd finishes (2710)
3376 - make sure unregistered services are removed from the srv_list
3377 - reset bulk XID's when resending them (caught by 1138 test)
3378 - unregister_bulk after timeout
3379 - fix lconf error (2694)
3380 - handle write after unfinished setstripe, stripe-only getstripe (2388)
3381 - readahead locks pages, leaves pending causing memory pressure (2673)
3382 - increase OST request buffers to 4096 on large machines (2729)
3383 - fix up permission of existing directories in simple_mkdir (2661)
3384 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
3385 - don't assign transno to errored transactions (2742)
3386 - don't delete objects on OST if given a bogus objid from MDS (2751)
3387 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
3388 - if rq_no_resend, then timeout request after recovery (2432)
3389 - fix MDS llog_logid record size, 64-bit array alignment (2733)
3390 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
3391 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
3392 - MDS recovery shouldn't delete objects that it has given out (2730)
3393 - if enqueue arrives after completion, don't clobber LVB (2819)
3394 - don't unlock pages twice when trigger_group_io returns error (2814)
3395 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
3396 - don't write pages to disk if there was an error (1450)
3397 - don't ping imports that have recovery disabled (2676)
3398 - take buffered bytes into account when balancing socknal conn (2817)
3399 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
3400 - reconnect unlink llog connection after MDS reconnects to OST (2816)
3401 - remove little-endian swabbing of llog records (1987)
3402 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
3403 - retry reposting request buffers if they fail (1191)
3404 - grow extent at grant time to avoid granting a revoked lock (2809)
3405 - lock revoke doesn't evict page if covered by a second lock (2765)
3406 - disable VM readahead to avoid reading outside lock extents (2805)
3408 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
3409 - updated kernel patches for hp-2.4.20 kernel (2681)
3411 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
3414 - fix truncated write corruption (2366)
3415 - fix for failed assertion in iopen_connect_dentry (1792,2517)
3417 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
3418 - ensure len(uuid) < 37 in lmc (1171)
3419 - fix ia64 OOPS in llog_test (2255)
3420 - zero end of page at obdfilter for partial page writes (2648)
3421 - don't leave stale dentries around after renames (bug 2428)
3422 - fix timeouts when evicting a client with a single lock held (2642)
3423 - set deadline for the initial HELLO message to drain (2634)
3424 - print out dotted-quad IP addresses in the socknal (2302)
3426 - additional debugging for MDS client eviction problem (2443)
3427 - fix mkfsoptions support for osts (2603, 2604)
3429 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
3432 - add series for the vanilla 2.6.0 kernel
3433 - add series for the vanilla 2.4.24 kernel
3434 - add series for a cray x86/64 UL kernel drop
3435 - fix xattr patches for the vanilla 2.4.19 series
3437 - generate true UUIDs in lmc (1171)
3438 - have portals stack dumping break in UML (2466)
3439 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
3440 - allocate with _NOFS in ldlm to avoid deadlock (1933)
3441 - wake callback waiting threads on client eviction (2460)
3442 - Add --ptldebug and --subsystem to lmc (1719)
3443 - update assertion to allow safe interrupt allocation
3444 - set rq_no_resend for cancel requests (2432)
3445 - recalculate ptlrpcd timeout after resend (2494)
3446 - call vfs_rmdir when removing pending directories (2368)
3447 - fix renaming a file to itself (2429)
3448 - lmc creates a default one-stripe lov (2454)
3449 - expand procfs space to handle large clusters (2326)
3450 - increase UML stack to avoid overflow
3451 - update lconf's list of debug and subsystem masks
3452 - fix lfs find --obd (2510)
3453 - /proc tunable for disabling filter read caching (2591)
3454 - stop rpm packages from altering slapd.conf (2301)
3455 - disable nagle in the socknal under 0conf (2578)
3456 - choose mds inode size based on stripe count (2572)
3457 - fix kernel-source rpm problems (2516)
3459 - add --disable-doc to avoid pdf generation (2421)
3460 - update documentation, tests, type-os, comments
3461 - avoid format warnings on ia64
3462 - remove the TOE NAL
3463 - tiny code cleanups by removing unused fields
3465 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
3468 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
3469 - remove the most blatant lies from BUILDING file (2371)
3470 - change default debug level to reasonable production setting
3471 - reduce client side cache size to reduce cache flush time
3472 - reduce max RPCs in flight to avoid unnecessary file fragmentation
3473 - make TCP zerocopy and pinger support enabled by default (2476)
3474 - sync writes completed after process exits caused crashes (2319)
3475 - maintain correct mount count on the MDS (2356)
3476 - backout 1557, because 2316 wasn't really fixed
3477 - better file I/O statistics gathering in /proc
3478 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
3479 - another kernel patch to fix zero-copy TCP function export
3480 - don't take duplicate lock when processing re-sent getattr (2420)
3481 - lctl uses obd_self_export instead of creating new conn (2353)
3482 - MDS/OST recovery case which requires object creation asserted (2425)
3483 - move lfs from /usr/sbin to /usr/bin in packages
3484 - fix race between mds_client_add and mds_client_free (2417)
3485 - use kmalloc instead of slabs in portals (2430)
3486 - don't create duplicate records when a failover MDS is present (2442)
3487 - remove unnecessary mount age check (2332)
3488 - don't remove directory inodes from locks prematurely (2451)
3489 - don't break if MDS service name is the same as hostname (2103)
3490 - fix races in client write RPC generation when cache full (2482)
3492 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
3495 - remove now-unused request->rq_obd (278)
3496 - if an allocation fails, print out how much memory we've used (1933)
3497 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
3498 - add the "configurable stack size" patch to most series files (1256)
3499 - ability to write large log records, for 100+ OST configs (2306)
3500 - fix NULL deref when filter_prep fails (2314)
3501 - fix operator precedence error in filter_sync
3502 - dynamic allocation of socknal TX descriptors (2315)
3503 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
3504 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
3505 - ensure that CWARN messages in Portals always get to the syslog
3506 - __init/__exit are not for prototype decls (ldlm_init/exit)
3507 - x86-64 compile warning fixes
3508 - fix gateway LMC keyword conflict (2318)
3509 - fix MDS lock inversions in getattr/reint paths (1844)
3510 - fix a rare lock re-ordering bug, which caused deadlock (2322)
3511 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
3512 - DLM race condition prevented some lock evictions (2328)
3513 - ENOMEM detection and retry on socknal sends (2230)
3514 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
3515 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
3516 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
3517 - better error messages when a client is rejected during recovery (1505)
3518 - avoid cancelling locks which were never granted, after failure (2330)
3519 - fix i_sem/journal inversion in mds_client_add (2333)
3520 - fix truncate/getattr lock cycle deadlock (2334)
3521 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
3522 - fix two rare exit paths which could leak an l_lock() ref (2321)
3523 - fencepost error in MDS/OST orphan recovery (2226)
3524 - make log record alignment 8 bytes (1988)
3525 - lstripe now fails when requested offset > ost_count (2237)
3526 - ensure that all kernel series have a complete list.h (1607)
3527 - fix crashes in special-file operations (2316)
3528 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
3530 - allow configurable automake binary, for testing new versions
3531 - small update to the lfs documentation
3533 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
3535 * fix negative export reference count in fsfilt_sync (2312)
3537 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
3538 * release candidate 0.9.1
3540 - orphans are moved into the PENDING directory for possible recovery
3541 - replayed opens now open by fid for orphan/rename safety (1042)
3542 - last close of an orphan inode generates a transno (683)
3543 - chdir() and mount() now pin the directory entry (1020)
3544 - avoid CERROR in normal ll_setattr_raw() error case (1500)
3545 - discard very old requests without processing them (1502)
3546 - remove some common, well-understood CERRORs (1505)
3547 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
3548 - clear "grant" flags in OST replies until OST grant code lands (1644)
3549 - fix read performance by not clobbering i_blksize on client (1598)
3550 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
3551 - make LRU size a /proc tunable, clears locks when reduced (707)
3552 - fix some lprocfs rot that prevented ptlbd from loading (1732)
3553 - server locks take references on exports now (1558)
3554 - build fixes for 2.4.20-rh trees (1663)
3555 - return an error from lov_create if all OSCs are inactive (1751)
3556 - fix import levels when a reconnect happens without a timeout (1597)
3557 - exit early from mds_open if we get a lookup error (1749)
3558 - partial page read at EOF wouldn't wait for disk before sending (1642)
3559 - avoid NULL deref in obdfilter when reading page past EOF (1592)
3560 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
3561 - fix LBUG in ll_it_open_error with rc = -2 (1861)
3562 - write/truncate lock inversion (1639)
3563 - Don't auto-load obdclass, portals modules during cleanup (1495)
3564 - fix timestamps from jumping to "now" (1763)
3565 - extra journal assertions (1648)
3566 - add an extra multiunlink test (1771)
3567 - fix read_record/write_record API (1776)
3568 - fix leak of offset_extent, possible incorrect i_size later (1772)
3569 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
3570 - Debugging for the kqswnal_get_idle_tx problems (1820)
3571 - Allow recovery to be attempted multiple times (1536)
3572 - Write out MDS last_rcvd file after it is first created (1600)
3573 - Fix tx_descriptor leak in failed transmit situations (1827)
3574 - ext3 journaling fixes for assertion failure after IO error (1871)
3575 - class_export_put() on freed export after completion AST error (1896)
3576 - Fix revalidate looping in VFS (1322)
3577 - Don't access a freed export during MDS_REINT timeout (1521)
3578 - Add open-unlink recovery support on the MDS (1673,1764)
3579 - Return an error if no MDS data was read from last_rcvd (1946)
3580 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
3581 - Don't setup a disk device that doesn't match exported UUID (317)
3582 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
3583 - avoid committing NULL handle in force close
3584 - local.sh is now a one-stripe LOV configuration
3585 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
3586 - fix ext3 htree duplicate directory entry corruption (1516)
3587 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
3588 - update to new LOV EA format (2097)
3589 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
3591 2003-06-15 Phil Schwan <phil@clusterfs.com>
3594 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
3595 - per-import/export recovery handling (958, 931, 959)
3596 - multiple last-rcvd slots, for serving multiple FSes (949)
3597 - connections are again shared between multiple imp/exports (963, 964)
3598 - "umount -f" would hang if any requests needed to be sent (393, 978)
3599 - avoid pinning large req buffer by copying for queued messages (989)
3600 - add "uuid" to "lctl device" command to help upcalls (991)
3601 - "open" RPCs with transnos would confuse recovery counters (1037)
3602 - do proper endian conversion of all wire messages (288, 340, 891)
3603 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
3604 - call waiting locks callback from LDLM recovery thread (1127, 1151)
3605 - fix ptlrpc_connection leak in target_handle_connect (1174)
3606 - fix import refcounting bug in OST and MDS cleanup (1134)
3607 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
3608 - fix very unlikely obd_types race condition (501)
3609 - remove osc_open hack for echo_client (1187)
3610 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
3611 - a failure in read_inode2 leads to deadlock (1139)
3612 - cancel ack-locks as soon as transaction is committed (1072)
3613 - fix major leaks and crashes in the bulk I/O path (937, 1057)
3614 - make sure to commitrw after any preprw to avoid deadlock (1162)
3615 - failing to execute a file in a lustre FS would lock inode (1203)
3616 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
3617 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
3618 - obd_uuid2tgt would walk off the end of the list (1255)
3619 - on IA64 the osc would give portals incorrect bulk size (1258)
3620 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
3621 - fix lock inversion caused by new llite matching code (1282)
3622 - limit the number of dirty pages on a client to 10MB (1286)
3623 - timed out locks were not being corrected cancelled (1289)
3624 - fix O_DIRECT above 4GB on IA-32 (1292)
3625 * major user-visible changes
3626 - fail out/fail over policy now controlled by the upcall (993)
3628 - add OBD_PING to check server availability and failure (954)
3629 - lustre messages are now sent in sending host order (288, 340, 891)
3630 - add eadatalen to MDS getattr reply (340)
3631 - OST read replies may contain second buffer, with per-page status (593)
3633 2003-03-11 Phil Schwan <phil@clusterfs.com>
3636 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
3637 - failed open()s could cause deadlock; fixed (867, 869)
3638 - stop cancelling OST locks when files are closed (481)
3639 - overlapping XID spaces caused network corruption (851, 853)
3640 - fix unsafe fsfilt counter arithmetic; change to atomic_t
3641 - setattr_raw added, to do single-RPC, server-side setattrs
3642 - lmc/lconf syntax change for OST UUIDs
3643 - fix crashy race condition between ptlrpc_free_req and osc_close
3644 - don't use request in mdc_enqueue if we hit a timeout (889)
3645 - don't set the inode i_size for regular files from the MDS (896)
3646 - handle out of order completion AST (842)
3647 - don't LBUG if a lock request times out after receiving AST (913)
3648 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
3649 - if a bad lock AST arrives, send an error instead of dropping entirely
3650 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
3651 - fix leak in bulk IO when only partially completed (899, 900, 926)
3652 - fix O_DIRECT for ia64 (55)
3653 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
3654 - C-z after timeout could hang a process forever; fixed (977)
3656 - client-side I/O cache (678, 924, 929, 941, 970)
3658 - READPAGE and SETATTRs which don't take server-side locks get
3661 2003-02-11 Phil Schwan <phil@clusterfs.com>
3664 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
3665 - Fix fsfilt_extN_readpage() to read a full page of directory
3666 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
3667 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
3668 - Fix imbalanced LOV object allocation and out-of-bound access (469)
3669 - Most intent operations were removed, in favour of a new RPC mode
3670 that does a single RPC to the server and bypasses most of the VFS
3671 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
3672 - Aggressively cancel local locks on DLM servers
3673 - mds_reint_unlink sends EA to the client if it's the last nlink.
3674 client uses that EA to unlink OST objects.
3675 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
3676 - recursive symlinks were fixed (439)
3677 - fixed NULL deref in DEBUG_REQ
3678 - filter_update_lastobjid no longer calls sync, which annoyed extN
3679 - fixed multi-client small-writes to a single file problem (445)
3680 - fixed mtime updates during file writes (607)
3681 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
3682 - fixed bug in obd_brw_read/write() (under guise of testing 367)
3683 - fixed Linux OST size reporting problem (444, 656)
3684 - OST now updates object mtime with writes or setattr (607, 619)
3685 - client verifies file size before zeroing page past EOF (445)
3686 - OST now writes last allocated objid to disk with allocation (108)
3687 - LOV on echo now works (409)
3689 - mds_reint_unlink sends a new buffer, with the EA included. this
3690 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
3691 set if a regular file was being unlinked, and it was the last link
3692 - use PtlGet from the target for bulk writes (315)
3693 - OST now updates object mtime with writes or setattr (607, 619)
3694 - LDLM now has a grant-time callback to revalidate locked items, if
3696 - Many MDS operations were reorganized to combat race conditions
3698 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
3699 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
3701 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
3704 - Fully reactivate OST imports after reconnection (512, others)
3705 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
3706 - More graceful error handling for truncating on dead OST (515)
3707 - Don't error out unless we're actually accessing dead stripes (474)
3708 - Fix garbage sizes when stripes are missing (410)
3709 - LRU counters were broken, causing constant lock purge (433, 432)
3710 - garbage on read from stripes with failed OSTs (441)
3711 - mark OSCs as active before reconnecting during recovery (438)
3712 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
3713 - lfind did not preserve OST order in output (443)
3714 - symlinks cause hung clients, incorrect data (439)
3715 - stop dereferencing request after dropping refcount (457)
3716 - don't LASSERT(spin_is_locked) on non-SMP (455)
3717 - fixes for many rename() bugs
3718 - fstat didn't correctly synchronize attributes (399)
3719 - server must handle lock cancellation during blocking AST prep (487)
3720 - bulk descriptors were free()d too soon (511)
3721 - fix paths in lconf, which would load incorrect modules (451, 507)
3722 - fix confusing lconf 'host not found' error message (386)
3723 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
3724 - fix race condition in mdc_blocking_ast() for inode access (526)
3725 - fix lov_unpackmd() unpacking wrong number of stripes (537)
3726 - fix lov_set_osc_active() marking wrong OSC inactive (440)
3727 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
3728 - fix multiple writes of stripe MD to MDS (358, maybe 519)
3729 - fix lstripe in several ways (kernel side) (527)
3730 - fix request leak in ldlm_cli_enqueue (262)
3731 - incorrect OSC was marked inactive after OST failure
3732 - call mds_fs_cleanup before unmounting filesystem (524)
3733 - fix races between taking ns_lock and ldlm_lock_change_resource
3734 - fix races updating LOV export open file list
3735 - fix lov_enqueue error path, avoid decref-ing bad lock handle
3736 - fix recovery NULL deref in ldlm_cli_cancel_unused
3737 - fix some DLM races by using new hash table for lock handles (419)
3738 - permit the client to specify desired inodes, at replay
3739 - duplicate requests when we queue them for replay reintegration
3740 - fix last_rcvd offset calculation
3741 - sync after each recovered transaction, so we always make progress
3742 - never, not always, ERESTART requests without transnos
3743 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
3745 - skip replay if the MDS says that the client is already connected
3746 - don't check for a recovery-enabled export to match lctl's UUID
3747 - don't INC_USE_COUNT for phantom exports
3748 - don't crash when cleaning up phantom exports (567)
3749 - don't double-finish or set replay data for errored mdc_open requests
3750 - abort requests when they time out, so we don't get old replies
3751 - send/receive replies for AST messages again
3752 - if the client says that it doesn't have the lock, cancel it on the
3754 - if we timeout during I/O, don't try to cancel an in-use lock; instead
3755 mark it as destroyed, it will all work out when decref is called
3756 - fix module use counts (22, 581)
3758 - ASTs now expect a reply (server cancels lock on error reply)
3760 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
3763 - fix many simultaneous client startup (392)
3764 - fix dentry->d_it clobbering
3765 - credentials weren't being shipped for readdir/getattr operations
3766 - remove invalid assertions triggered during some concurrent MD
3768 - proper Lustre versions added (336, 389)
3769 - fix memory leak for create error case (398)
3770 - fix LOV locking bug that would get cli/srv out of sync
3771 - fix echo client over LOV (409)
3772 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
3773 - fix double-O_EXCL intent crash (424)
3774 - avoid sending multiple lock CANCELs (352)
3776 - MDS can do multi-client recovery (modulo bugs in new code)
3778 - many updates, edits, cleanups
3780 2002-11-18 Phil Schwan <phil@clusterfs.com>
3783 - fix null d_it dereference (346)
3784 - fix full OST/dbench hang (333)
3785 - fix permission problem with file removal (286)
3786 - fix removal of OSCs from LOV when they fail
3787 - fix NULL deref during bulk timeout (214)
3788 - fix problems related to multiple filesystems on one MDS (241)
3789 - fixed serious subtle metadata locking bugs
3790 - free locks on clients when inodes are removed due to memory
3792 - fix inode pointer in lock data (285)
3793 - partial support for multiple MDS on a single host (241)
3794 - data locks weren't cancelled at clear_inode time (290, 311)
3795 - intent locks could lead to unbounded lock growth (205)
3796 - added a maximum lock count, an LRU list, and a flusher
3797 - fix multiple rename (365)
3798 - properly abstracted the echo client
3799 - OSC locked 1 byte too many; fixed
3800 - rewrote brw callback code:
3801 - fixed recovery bugs related to LOVs (306)
3802 - fixed too-many-pages-in-one-write crash (191)
3803 - fixed (again) crash in sync_io_timeout (214)
3804 - probably fixed callback-related race (385)
3806 - Add capability to MDS protocol
3807 - LDLM cancellations and callbacks on different portals
3809 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3812 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3813 - defer open object destruction to close time (601981, 138)
3814 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3815 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3816 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3817 - don't call obd_setattr in ll_file_release for destroyed objects
3818 * protocol change to lustre_msg: move |version| and add |flags|
3819 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3820 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3821 * added replay of create, unlink, link and rename operations during
3822 MDS failover; recovery should be much more robust now
3823 * remove failed OSCs from LOVs (only lov_create uses this so far)
3824 * the lustre-HOWTO was brought (more) up to date (582544)
3826 2002-10-23 Phil Schwan <phil@clusterfs.com>
3829 - in-use dentries weren't being reused properly (617851)
3830 - prevent multiple LDLM setup (599178)
3831 - fix LOV size calculations for truncate (617853)
3832 - fix client handling of MDS intent errors (POSIX)
3833 - fix permission bug in lovstripe.c test (624321)
3834 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3835 - truncate past end of file could corrupt data
3836 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3837 - a race in recovery could return ETIMEDOUT to apps (623947)
3838 - building outside the source directory was fixed
3839 * the lustre-HOWTO was brought (more) up to date (582544)
3840 * major progress was made on recovery functionality
3842 2002-10-10 Phil Schwan <phil@clusterfs.com>
3845 - recovery deadlock fix
3846 - rm -rf causes LBUG fix (617817)
3847 - file open by multiple tasks fix (618962)
3848 - directory permissions bugs (602707 and 620007)
3849 - journal_stop fixed with locking (611313)
3850 - O_APPEND failures resolved (618273, perhaps 614459)
3851 - lconf PATH fix (619770)
3852 - IA64 build fix (621450)
3853 - RPC buffer sizes scale with amount of memory
3855 2002-10-01 Phil Schwan <phil@clusterfs.com>
3858 - locks would be cancelled without throwing away data pages,
3859 resulting in inconsistent data (605627)
3860 - inode attributes were not always being refreshed (605627, 612449)
3861 - lconf now continues to cleanup after lctl reports an error
3862 - MDS now enforces user permissions (602707)
3863 - lprocfs cleanup fixed, but not yet enabled (614157)
3864 - fixed infinite server hang, should a client not respond to an AST
3865 - avoid going into recovery if user calls readlink() with a buffer
3866 that's too small (613941)
3867 - AST RPCs no longer require replies (614867) -- this may be changed
3868 - don't crash server if client sends an IOV that's too big (611336)
3869 - fixed lock conversion deadlock (611892)
3870 - fixed the following of symlinks (614622)
3871 * recovery: the server can remove locks from a client that dies, other
3872 clients can make progress
3873 * more extN patch fixes
3874 * compile-time configurable ptlrpc buffer allocations
3876 - collaborative read cache document
3877 - Lustre Lite Performance CDR document-in-progress
3879 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3882 - fix typo in patch-2.4.18
3884 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3887 - clear ptlrpc request each time in handle_incoming_request()
3888 - unlink of files now destroys the object on the OST
3890 2002-09-19 Peter Braam <braam@clusterfs.com>
3892 * add hard link support
3893 * change obdfile creation method
3894 * kernel patch changed
3896 2002-09-19 Peter Braam <braam@clusterfs.com>
3899 - stack overflow bug in extN fixed
3901 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
3903 * documentation updates
3904 - add man pages for config tools
3905 - update tests/README to describe testing with new config tools
3906 - finish metadata API descriptions
3907 * bug fixes and cleanups
3908 - statfs workaround for 16TB limit
3909 - LOV stripe allocation improved, can stripe on subset of OSTs
3910 - LOV file size/IO offset was wrong for files > 4GB in size
3911 - object EA data was being dropped, caused files to be unreadable
3912 - memory overflow with non-LOV OST caused memory corruption
3913 - fixed regression tests to work with new config tools, obdfilter
3914 - fixed bug when directory size became larger than 1 block
3915 - fixed bug (for single client case) when PWD was deleted
3916 - invalidate local directory pages when doing intent-based ops
3917 - avoid LDLM oops when lock callback contained bad data
3919 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
3921 * documentation updates
3922 * bug fixes and cleanups
3923 - configuration tools
3926 - 64-bit compile warnings
3927 - 64-bit internal statfs data
3929 * test_brw on persistent OST devices
3931 * lprocfs (disabled)
3933 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
3935 * documentation updates
3936 * bug fixes and cleanups
3937 * configuration tools
3939 2002-08-30 Peter J. Braam <braam@clusterfs.com>
3942 * many small fixes to 0_5_4
3943 * io/network handling
3944 * thinkos in MDS operations
3946 2002-08-24 Peter J. Braam <braam@clusterfs.com>
3949 * crucial basic fixes to 0.5.3
3950 * IOR, Iozone work over Elan
3953 2002-08-07 Phil Schwan <phil@clusterfs.com>
3954 * version 0_5_3, our first alpha
3955 * we use the new Portals iovs
3956 * documentation updates
3957 * bug fixes and cleanups
3958 * small changes in the DLM wire protocol
3960 2002-07-25 Peter J. Braam <braam@clusterfs.com>
3961 * version 0_5_1 with some initial stability,
3962 * locking on MD and file I/O.
3963 * documentation updates
3964 * several bug fixes since 0.5.0
3965 * small changes in wire protocol
3967 2002-07-18 Phil Schwan <phil@clusterfs.com>
3969 * delivered as Lustre Light Alpha
3970 * fixed a crash after handling invalid MDS requests
3971 * fixed directory pages for architectures with non-4k pages sizes
3973 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
3974 * release version v0_4_4
3975 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
3977 * Fixes a number of interruption problems with OST operations.
3978 * Update documentation for portals header changes
3979 * Move all wire protocol structs/defines to lustre_idl.h
3980 * Fixes symlink length bug.
3981 * Add tcpdump to repository.
3983 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
3984 * release version v0_4_3
3985 * Fixes statfs for inodes on extN.
3986 * Fixes bug in runtests which would delete /etc/hosts.
3987 * Use 64-bit object IDs wherever possible (not into VFS though)
3988 Remove ost_get_info, which is unused by lustre, and out of date.
3990 2002-07-03 Peter Braam <braam@clusterfs.com>
3991 * release version v0_4_2 Fixes a lookup error (type not passed)
3992 * move forward to head of Portals
3993 * move forward to latest Lustre kernel
3995 2002-06-25 Peter Braam <braam@clusterfs.com>
3996 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob