1 tbd Cluster File Systems, Inc. <info@clusterfs.com>
6 2.6.16.46-0.14 (SLES 10),
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: 1.39.cfs8
13 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
17 Description: don't use GFP_* in generic Lustre code.
18 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
22 Description: obdclass is limited by single OBD_ALLOC(idarray)
23 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
27 Description: warnings with build patchless client with vanila 2.6.19 and up
28 Details : change old ctl_table style and replace ctl_table/ctl_table_header
29 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
33 Frequency : Only for SLES
34 Description: sanity_quota fail test_1
35 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
36 file, which makes TSTID[2] inunique.
40 Frequency : Only for SLES9
41 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
42 Details : Update target/ChangeLog/which_patch .
46 Frequency : Only for test_10 in sanity-quota.sh
47 Description: a bug in quota test code
48 Details : checking a test flag in a wrong place
52 Frequency : Only for test_13 in sanity-quota.sh
53 Description: a bug in quota test script
54 Details : shouldn't check overfull allocated quota
58 Description: jbd statistics
59 Details : Port older jbd statistics patch for sles10
61 Severity : enhancement
63 Description: Add printing inode info into message about error in writepage.
68 Description: reply_lock_interpret crash due to race with it and lock cancel.
69 Details : Do not replay locks that are being cancelled. Do not reference
70 locks by their address during replay, just by their handle.
74 Frequency : When flocks are used.
75 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
76 Details : Flock locks might destroy just granted lock if it could be merged
77 with another existing flock, this is done in completion handler,
78 so teach ldlm_cli_enquque_fini that this is a valid case for
84 Description: Oops in read and write path when failing to allocate lock.
85 Details : Check if lock allocation failed and return error back.
89 Description: lstripe command fails for valid OST index
90 Details : The stripe offset is compared to lov->desc.ld_tgt_count
91 instead of lov->desc.ld_active_tgt_count.
95 Description: sanity.sh failed test 103
96 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
101 Description: df doesn't work properly if diskfs blocksize != 4K
102 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
104 --------------------------------------------------------------------------------
106 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
108 * Support for kernels:
109 2.6.5-7.283 (SLES 9),
110 2.6.9-55.EL (RHEL 4),
111 2.6.16.46-0.14 (SLES 10),
112 2.6.18.8 vanilla (kernel.org)
113 * Client support for unpatched kernels:
114 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
115 2.6.16 - 2.6.22 vanilla (kernel.org)
116 * Due to recently discovered recovery problems, we do not recommend
117 using patchless RHEL 4 clients with this or any earlier release.
118 * Recommended e2fsprogs version: 1.39.cfs8
119 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
120 * Starting with this release, the ldiskfs backing filesystem required
121 by Lustre is now in its own package, lustre-ldiskfs. This package
122 should be installed. It is versioned separately from Lustre and
123 may be released separately in future.
127 Description: block reactivating mgc import until all deactivates complete
128 Details : Fix race when failing back MDT/MGS to itself (testing)
130 Severity : enhancement
132 Description: add optional extra BUILD_VERSION info
133 Details : add a new environment variable (namely LUSTRE_VERS) which allows
134 to override the lustre version.
137 Frequency : 2.6.18 servers only
139 Description: ll_kern_mount() doesn't release the module reference
140 Details : The ldiskfs module reference count never drops down to 0
141 because ll_kern_mount() doesn't release the module reference.
146 Description: server LBUG when using old ost_num_threads parameter
147 Details : Accept the old ost_num_threads parameter but warn that it
148 is deprecated, and fix an off-by-one error that caused an LBUG.
153 Description: Transient SCSI error results in persistent IO issue
154 Details : iobuf->dr_error is not reinitialized to 0 between two
158 Frequency : sometimes when underlying device returns I/O errors
160 Description: OSTs not going read-only during write failures
161 Details : OSTs are not remounted read-only when the journal commit threads
162 get I/O errors because fsfilt_ext3 calls journal_start/stop()
163 instead of the ext3 wrappers.
167 Description: poor connect scaling with increasing client count
168 Details : Don't run filter_grant_sanity_check for more than 100 exports
169 to improve scaling for large numbers of clients.
172 Frequency : SLES10 only
174 Description: sanity-quota.sh quotacheck failed: rc = -22
175 Details : Quotas cannot be enabled on SLES10.
178 Frequency : liblustre clients only
180 Description: getdirentries does not give error when run on compute nodes
181 Details : getdirentries does not fail when the size specified as an argument
182 is too small to contain at least one entry
184 Severity : enhancement
186 Description: Add LNET router traceability for debug purposes
187 Details : If a checksum failure occurs with a router as part of the
188 IO path, the NID of the last router that forwarded the bulk data
189 is printed so it can be identified.
194 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
195 Details : Due to a race condition, liblustre clients were occasionally
198 Severity : enhancement
200 Description: lfs setstripe use optional parameters instead of postional
203 Severity : enhancement
205 Description: Nanosecond timestamp support for ldiskfs
206 Details : The on-disk ldiskfs filesystem has added support for nanosecond
207 resolution timestamps. There is not yet support for this at
208 the Lustre filesystem level.
211 Frequency : during server recovery
213 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
214 Details : request with rq_no_resend flag not awake l_wait_event if they get a
218 Frequency : nfs export on patchless client
220 Description: connectathon hang when test nfs export over patchless client
221 Details : Disconnected dentry cannot be found with lookup, so we do not need
222 to unhash it or make it invalid
225 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
226 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
227 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
232 Description: open req refcounting wrong on reconnect
233 Details : If reconnect happened between getting open reply from server and
234 call to mdc_set_replay_data in ll_file_open, we will schedule
235 replay for unreferenced request that we are about to free.
236 Subsequent close will crash in variety of ways.
237 Check that request is still eligible for replay in
238 mdc_set_replay_data().
243 Description: disable writes to filesystem when reading health_check file
244 Details : the default for reading the health_check proc file has changed
245 to NOT do a journal transaction and write to disk, because this
246 can cause reads of the /proc file to hang and block HA state
247 checking on a healthy but otherwise heavily loaded system. It
248 is possible to return to the previous behaviour during configure
249 with --enable-health-write.
251 Severity : enhancement
253 Description: 64-bit inode version
254 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
255 to the inode. This will be required for version-based recovery.
260 Description: MDS fails to start if a duplicate client export is detected
261 Details : in some rare cases it was possible for a client to connect to
262 an MDS multiple times. Upon recovery the MDS would detect this
263 and fail during startup. Handle this more gracefully.
265 Severity : enhancement
267 Description: Add -o localflock option to simulate old noflock
269 Details : This will achieve local-only flock/fcntl locks
275 Description: log_commit_thread vs filter_destroy race leads to crash
276 Details : Take import reference before releasing llog record semaphore
281 Description: Wrong request locking in request set processing
282 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
283 imp_delayed_list, in this place should be used imp_lock.
286 Frequency : when reconnection
288 Description: Grant Leak when osc reconnect to OST
289 Details : When osc reconnect ost, OST(filter) should check whether it
290 should grant more space to client by comparing fed_grant and
291 cl_avail_grant, and return the granted space to client instead
292 of "new granted" space, because client will call osc_init_grant
293 to update the client grant space info.
296 Frequency : when client reconnect to OST
298 Description: Grant Leak when osc do resend and replay bulk write
299 Details : When osc reconnect to OST, OST(filter)should clear grant info of
300 bulk write request, because the grant info while be sync between
301 OSC and OST when reconnect, and we should ignore the grant info
302 these of resend/replay write req.
307 Description: Grant space more than avaiable left space sometimes.
308 Details : When then OST is about to be full, if two bulk writing from
309 different clients came to OST. Accord the avaliable space of the
310 OST, the first req should be permitted, and the second one
311 should be denied by ENOSPC. But if the seconde arrived before
312 the first one is commited. The OST might wrongly permit second
313 writing, which will cause grant space > avaiable space.
316 Frequency : when client is evicted
318 Description: Grant might be wrongly erased when osc is evicted by OST
319 Details : when the import is evicted by server, it will fork another
320 thread ptlrpc_invalidate_import_thread to invalidate the
321 import, where the grant will be set to 0. While the original
322 thread will update the grant it got when connecting. So if
323 the former happened latter, the grant will be wrongly errased
324 because of this race.
329 Description: Checking Stale with correct fid
330 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
331 to check whether it is stale, because sometimes, we want the
332 enqueue happened anyway, and op_data.fid2 will not be initialized.
334 Severity : enhancement
336 Description: update patchless client
337 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
340 Frequency : only with 2.4 kernel
342 Description: random memory corruption
343 Details : size of struct ll_inode_info is to big for union inode.u and this
344 can be cause of random memory corruption.
349 Description: Memory leak in recovery
350 Details : Lov_mds_md was not free in an error handler in mds_create_object.
351 It should also check obd_fail before fsfilt_start, otherwise if
352 fsfilt_start return -EROFS,(failover mds during mds recovery).
353 then the req will return with repmsg->transno = 0 and rc = EROFS.
354 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
355 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
356 be freed no matter whether fsfilt_commit success or not.
359 Frequency : only with huge count clients
361 Description: Prevents from taking the superblock lock in llap_from_page for
363 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
364 for llap_from_page call in ll_removepage prevents from taking the
365 superblock lock for a soon died page.
370 Description: Not check open intent error before release open handle
371 Details : in some rare cases, the open intent error is not checked before
372 release open handle, which may cause
373 ASSERTION(open_req->rq_transno != 0), because it tries to release
374 the failed open handle.
379 Description: Set cat log bitmap only after create log success.
380 Details : in some rare cases, the cat log bitmap is set too early. and it
381 should be set only after create log success.
385 Description: Accessing a block bevice can re-enable I/O when Lustre is
386 tearing down a device.
387 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
392 Description: service threads may hog cpus when there are a lot of requests
394 Details : Insert cond_resched to give other threads a chance to use some of
400 Description: the cat log was not initialized in recovery
401 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
402 unlink log on mds will not be initialized until mds post
403 recovery. And also in mds post recovery, the unlink log will
404 initialization will be done asynchronausly, so there will be race
405 between add unlink log and unlink log initialization.
409 Description: brw_stats were being printed incorrectly
410 Details : brw_stats were being printed as log2 but all of them were not
411 recorded as log2. Also remove some code duplication arising from
412 filter_tally_{read,write}.
416 Frequency : rare, only in recovery.
417 Description: ASSERTION(req->rq_type != LI_POISON) failed
418 Details : imp_lock should be held while iterating over imp_sending_list for
419 prevent destroy request after get timeout in ptlrpc_queue_wait.
423 Description: replay-single.sh test 52 fails
424 Details : A lock's skiplist need to be cleanup when it being unlinked
425 from its resource list.
429 Description: Short directio read returns full requested size rather than
431 Details : Direct I/O operations should return actual amount of bytes
432 transferred rather than requested size.
434 Severity : enhancement
436 Description: metadata RPC reduction (e.g. for rm performance)
437 Details : decrease the amount of synchronous RPC between clients and servers
438 by canceling conflicing lock before the operation on the client side
439 and packing thier handles into the main operation RPC to server.
441 --------------------------------------------------------------------------------
443 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
448 Frequency : on some architectures
450 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
451 Details : Uninitialized flags sometimes cause configuration commands to
455 Frequency : patchless clients only
457 Description: missing __iget() symbol export
458 Details : The __iget() symbol export is missing. To avoid the need for
459 this on patchless clients the deathrow inode reaper is turned
460 off, and we depend on the VM to clean up old inodes. This
461 dependency was during via the fix for bug 12181.
463 --------------------------------------------------------------------------------
465 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
467 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
468 INTEROPERATE with older versions automatically. In many cases a
469 special upgrade step is needed. Please read the
470 user documentation before upgrading any part of a live system.
471 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
472 version will not interoperate with 1.6 betas before beta5 (1.5.95).
473 * WARNING: Lustre configuration and startup changes are required with
474 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
479 Severity : enhancement
481 Description: MountConf
482 Details : Lustre configuration is now managed via mkfs and mount
483 commands instead of lmc and lconf. New obd types (MGS, MGC)
484 are added for dynamic configuration management. See
485 https://mail.clusterfs.com/wikis/lustre/MountConf for
488 Severity : enhancement
490 Description: dynamic OST addition
491 Details : OSTs can now be added to a live filesystem
493 Severity : enhancement
495 Description: startup order invariance
496 Details : MDTs and OSTs can be started in any order. Clients only
497 require the MDT to complete startup.
499 Severity : enhancement
501 Description: parallel, asynchronous orphan cleanup
502 Details : orphan cleanup is now performed in separate threads for each
503 OST, allowing parallel non-blocking operation.
505 Severity : enhancement
507 Description: optimized stripe assignment
508 Details : stripe assignments are now made based on ost space available,
509 ost previous usage, and OSS previous usage, in order to try
510 to optimize storage space and networking resources.
512 Severity : enhancement
514 Description: Permanently set tunables
515 Details : All writable /proc/fs/lustre tunables can now be permanently
516 set on a per-server basis, at mkfs time or on a live
519 Severity : enhancement
521 Description: Lustre message v2
522 Details : Add lustre message format v2.
524 Severity : enhancement
526 Description: client OST exclusion list
527 Details : Clients can be started with a list of OSTs that should be
528 declared "inactive" for known non-responsive OSTs.
532 Description: SPEC SFS validation failure on NFS v2 over lustre.
533 Details : Changes the blocksize for regular files to be 2x RPC size,
534 and not depend on stripe size.
536 Severity : enhancement
538 Description: Multiple MD RPCs in flight.
539 Details : Further unserialise some read-only MDS RPCs - learn about intents.
540 To avoid overly-overloading MDS, introduce a limit on number of
541 MDS RPCs in flight for a single client and add /proc controls
542 to adjust this limit.
544 Severity : enhancement
546 Description: client read/write statistics
547 Details : Add client read/write call usage stats for performance
548 analysis of user processes.
549 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
550 file access. extents_stats shows chunk size distribution.
551 extents_stats_per_process show chunk size distribution per
554 Severity : enhancement
556 Description: mds statistics
557 Details : Add detailed mds operations statistics in
558 /proc/fs/lustre/mds/*/stats.
562 Description: Failure of copying files with lustre special EAs.
563 Details : Client side always return success for setxattr call for lustre
564 special xattr (currently only "trusted.lov").
569 Description: Refcount LNET uuids
570 Details : The global LNET uuid list grew linearly with every startup;
571 refcount repeated list entries instead of always adding to
574 Severity : enhancement
576 Description: Dynamic service threads
577 Details : Within a small range, start extra service threads
578 automatically when the request queue builds up.
581 Frequency : mixed-endian client/server environments
583 Description: mixed-endian crashes
584 Details : The new msg_v2 system had some failures in mixed-endian
587 Severity : enhancement
589 Description: Easy OST removal
590 Details : OSTs can be permanently deactivated with e.g. 'lctl
591 conf_param lustre-OST0001.osc.active=0'
593 Severity : enhancement
595 Description: MGS proc entries
596 Details : Added basic proc entries for the MGS showing what filesystems
599 Severity : enhancement
601 Description: provide MGS failover
602 Details : Added config lock reacquisition after MGS server failover.
604 Severity : enhancement
606 Description: add Linux 2.4 support
607 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
611 Description: a large application tries to do I/O to the same resource and dies
613 Details : Check the req->rq_arrival time after the call to
614 ost_brw_lock_get(), but before we do anything about
615 processing it & sending the BULK transfer request. This
616 should help move old stale pending locks off the queue as
617 quickly as obd_timeout.
620 Frequency : when an incorrect nid is specified during startup
622 Description: ptlrpc connect to non-existant node causes kernel crash
623 Details : LNET can't be re-entered from an event callback, which
624 happened when we expire a message after the export has been
625 cleaned up. Instead, hand the zombie cleanup off to another
628 Severity : enhancement
630 Description: plain/inodebits lock performance improvement
631 Details : Grouping plain/inodebits in granted list by their request modes
632 and bits policy, thus improving the performance of search through
636 Frequency : only if OST filesystem is corrupted
638 Description: client incorrectly hits assertion in ptlrpc_replay_req()
639 Details : for a short time RPCs with bulk IO are in the replay list,
640 but replay of bulk IOs is unimplemented. If the OST filesystem
641 is corrupted due to disk cache incoherency and then replay is
642 started it is possible to trip an assertion. Avoid putting
643 committed RPCs into the replay list at all to avoid this issue.
646 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
648 Description: System hang on startup
649 Details : This bug allowed the liblustre (e.g. catamount) client to
650 return to the app before handling all startup RPCs. This
651 could leave the node unresponsive to lustre network traffic
652 and manifested as a server ptllnd timeout.
654 Severity : enhancement
656 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
657 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
658 boolean to control whether to print peer debug info when a
659 client's RPC times out.
662 Frequency : only for kernels with patches from Lustre below 1.4.3
664 Description: Remove old rdonly API
665 Details : Remove old rdonly API which unused from at least lustre 1.4.3
668 Frequency : only for devices with external journals
670 Description: Set external device read-only also
671 Details : During a commanded failover stop, we set the disk device
672 read-only while the server shuts down. We now also set any
673 external journal device read-only at the same time.
676 Frequency : when upgrading from 1.4 while trying to change parameters
678 Description: The wrong (new) MDC name was used when setting parameters for
679 upgraded MDT's. Also allows changing of OSC (and MDC)
680 parameters if --writeconf is specified at tunefs upgrade time.
683 Frequency : when setting specific ost indicies
685 Description: QOS code breaks on skipped indicies
686 Details : Add checks for missing OST indicies in the QOS code, so OSTs
687 created with --index need not be sequential.
689 Severity : enhancement
691 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
692 Details : The uninit_groups feature works in conjunction with the kernel
693 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
694 up the pass1 processing of e2fsck. This is a read-only feature
695 in ldiskfs2 only, so older kernels and current ldiskfs cannot
696 mount filesystems that have had this feature enabled.
698 Severity : enhancement
700 Description: Improve multi-block allocation algorithm to avoid fragmentation
701 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
702 allocation locality and avoid filesystem fragmentation.
704 ------------------------------------------------------------------------------
706 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
708 * Support for kernels:
709 2.4.21-47.0.1.EL (RHEL 3)
711 2.6.9-42.0.10.EL (RHEL 4)
712 2.6.12.6 vanilla (kernel.org)
713 2.6.16.27-0.9 (SLES 10)
714 * Recommended e2fsprogs version: 1.39.cfs5
716 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
720 Frequency : occasional, depends on client load and configuration
721 Bugzilla : 12181, 12203
722 Description: data loss for recently-modified files
724 Details : In some cases it is possible that recently written or created
725 files may not be written to disk in a timely manner (this should
726 normally be within 30s unless client IO load is very high).
727 The problem appears as zero-length files or files that are a
728 multiple of 1MB in size after a client crash or client eviction
729 that are missing data at the end of the file.
731 This problem is more likely to be hit on clients where files are
732 repeatedly created and unlinked in the same directory, clients
733 have a large amount of RAM, have many CPUs, the filesystem has
734 many OSTs, the clients are rebooted frequently, and/or the files
735 are not accessed by other nodes after being written.
737 The presence of the problem can be detected by looking at
738 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
739 smaller than the second (nr_unused) then dirty files will not
740 be flushed automatically to disk. "sync; sleep 10" should be
741 run several times on the node before unmounting it to update
742 Lustre (this is also safe to run on nodes without this problem).
744 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
745 that can cause this same problem, so customers using that kernel
746 also need to update the kernel in addition to Lustre. In order
747 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
749 It is normal that files written just before a client crash (less
750 than 30s) may not yet have been flushed to disk, even for local
754 Frequency : frequent on thin XT3 nodes
756 Description: UUID collision on thin XT3 Linux nodes
757 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
758 randomly, since we relied on an insufficiently-seeded PRNG.
763 Description: OSS hangs after "All ost request buffers busy"
764 Details : A deadlock between quota and journal operations caused OSS
765 hangs after printing "All ost request buffers busy."
768 Frequency : always on liblustre builds
770 Description: Cleanup compiler warnings on liblustre
773 Frequency : always on liblustre builds on XT3
775 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
779 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
780 > 32000 subdirectories
781 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
782 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
783 subdirectory count crosses 32000. This will aid e2fsck to
784 correctly handle more than 32000 subdirectories.
787 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
789 Description: System hang on startup
790 Details : This bug allowed the liblustre (e.g. catamount) client to
791 return to the app before handling all startup RPCs. This
792 could leave the node unresponsive to lustre network traffic
793 and manifested as a server ptllnd timeout.
795 Severity : enhancement
797 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
798 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
799 boolean to control whether to print peer debug info when a
800 client's RPC times out.
805 Description: make O_SYNC working on 2.6 kernels
806 Details : 2.6 kernels use different method for mark pages for write,
807 so need add a code to lustre for O_SYNC work.
812 Description: Failure to close file and release space on NFS
813 Details : Put inode details into lock acquired in ll_intent_file_open.
814 Use mdc_intent_lock in ll_intent_open to properly
815 detect all kind of errors unhandled by mdc_enqueue.
820 Description: proc file read during shutdown sometimes raced obd removal,
822 Details : Add lock to prevent obd access after proc file removal.
825 Frequency : Only for files larger than 4GB on 32-bit clients.
827 Description: improperly doing page alignment of locks
828 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
829 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
834 Description: RPCs being resent when they shouldn't be
835 Details : Some RPCs that should not be resent are being resent. This
836 can cause inconsistencies in the RPC state machine. Do not
837 resend such requests.
840 Frequency : rare, only with NFS export
842 Description: Crash on NFS re-export node
843 Details : under very unusual load conditions an assertion is hit in
844 ll_intent_file_open()
847 Frequency : only if OST filesystem is corrupted
849 Description: client incorrectly hits assertion in ptlrpc_replay_req()
850 Details : for a short time RPCs with bulk IO are in the replay list,
851 but replay of bulk IOs is unimplemented. If the OST filesystem
852 is corrupted due to disk cache incoherency and then replay is
853 started it is possible to trip an assertion. Avoid putting
854 committed RPCs into the replay list at all to avoid this issue.
859 Description: large O_DIRECT requests fail under memory pressure/fragmentation
860 Details : Large single O_DIRECT read and write calls can fail to allocate
861 a sufficiently large buffer to process the request. In case of
862 allocation failure the allocation is retried with a smaller
863 buffer and broken into smaller requests.
865 Severity : enhancement
867 Description: Add -o localflock option to simulate old noflock behaviour.
868 Details : This will achieve local-only flock/fcntl locks coherentness.
873 Description: versioning check is incomplete
874 Details : Checking the version difference of client vs. server, report
875 error if the gap is too big.
880 Description: add support PG_writeback bit
881 Details : add support for PG_writeback bit for Lustre, for more carefull
882 work with page cache in 2.6 kernel. This also fix some deadlocks
883 and remove hack for work O_SYNC with 2.6 kernel.
885 Severity : enhancement
887 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
888 Details : The uninit_groups feature works in conjunction with the kernel
889 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
890 up the pass1 processing of e2fsck. This is a read-only feature
891 in ldiskfs2 only, so older kernels and current ldiskfs cannot
892 mount filesystems that have had this feature enabled.
894 Severity : enhancement
896 Description: Improve multi-block allocation algorithm to avoid fragmentation
897 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
898 allocation locality and avoid filesystem fragmentation.
900 ------------------------------------------------------------------------------
902 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
904 * Support for kernels:
905 2.6.9-42.0.3.EL (RHEL 4)
907 2.4.21-47.0.1.EL (RHEL 3)
908 2.6.12.6 vanilla (kernel.org)
909 2.6.16.21-0.8 (SLES10)
910 * Recommended e2fsprogs version: 1.39.cfs2-0
912 * The backwards-compatible /proc/sys/portals symlink has been removed
913 in this release. Before upgrading, please ensure that you change
914 any configuration scripts or /etc/sysctl.conf files that access
915 /proc/sys/portals/* or sysctl portals.* to use the corresponding
916 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
917 in advance of the upgrade on any system running Lustre 1.4.6 or
918 newer, since /proc/sys/lnet was added in that version.
919 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
923 Frequency : only when quota is used
925 Description: avoid scanning export list for quota master
926 Details : Change the algorithms to avoid scanning export list in order
927 to improve the efficiency.
930 Frequency : MDS failover only, very rarely
932 Description: "went back in time" messages on mds failover
933 Details : The greatest transno may be lost when the current operation
934 finishes with an error (transno==0) and the client's last_rcvd
935 record is over-written. Save the greatest transno in the
936 mds_last_transno for this case.
939 Frequency : always for specific kernels and striping counts
941 Description: client may get "Matching packet too big" without ACL support
942 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
943 when trying to access files in certain configurations. The
944 clients should in fact be denied when mounting because they do
948 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
950 Description: many clients connecting with IO in progress causes connect timeouts
951 Details : Avoid synchronous journal commits to avoid delays caused by many
952 clients connecting/disconnecting when bulk IO is in progress.
953 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
954 OST_IO_PORTAL to avoid delays behind potentially many pending
958 Frequency : occasionally with multiple writers to a single file
960 Description: shared writes to file may result in wrong size reported by stat()
961 Details : Allow growing of kms when extent lock is cancelled
964 Frequency : always with random mmap IO to multi-striped file
966 Description: mmap write might be lost if we are writing to a 'hole' in stripe
967 Details : Only if the hole is at the end of OST object so that kms is too
968 small. Fix is to increase kms accordingly in ll_nopage.
971 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
973 Description: writes to a missing object would leak memory on the OST
974 Details : If there is an inconsistency between the MDS and OST filesystems,
975 such that the MDS references an object that doesn't exist, writes
976 to that object will leak memory due to incorrect cleanup in the
977 error handling path, eventually running out of memory on the OST.
982 Description: Creating too long symlink causes lustre errors
983 Details : Check symlink and name lengths before sending requests to MDS.
986 Frequency : only if flock is enabled (not on by default)
988 Description: posix locks not released on fd closure on 2.6.9+
989 Details : We failed to add posix locks to list of inode locks on 2.6.9+
990 kernels, this caused such locks not to be released on fd close and
991 then assertions on fs unmount about still used locks.
994 Frequency : MDS failover only, very rarely
996 Description: clients may get ASSERTION(granted_lock != NULL)
997 Details : When request was taking a long time, and a client was resending
998 a getattr by name lock request. The were multiple lock requests
999 with the same client lock handle and
1000 mds_getattr_name->fixup_handle_for_resent_request found one of the
1001 lock handles but later failed with ASSERTION(granted_lock != NULL).
1006 Description: handle->h_buffer_credits > 0, assertion failure
1007 Details : h_buffer_credits is zero after truncate, causing assertion
1008 failure. This patch extends the transaction or creates a new
1012 Frequency : NFS re-export or patchless client
1013 Bugzilla : 11179, 10796
1014 Description: Crash on NFS re-export node (__d_move)
1015 Details : We do not want to hash the dentry if we don't have a lock.
1016 But if this dentry is later used in d_move, we'd hit uninitialised
1017 list head d_hash, so we just do this to init d_hash field but
1018 leave dentry unhashed.
1021 Frequency : NFS re-export or patchless client
1023 Description: NFS exports has problem with symbolic link
1024 Details : lustre client didn't properly install dentry when re-exported
1025 to NFS or running patchless client.
1028 Frequency : NFS re-export or patchless client
1030 Description: Various nfs/patchless fixes.
1031 Details : fixes reuse disconected alias for lookup process - this fixes
1032 warning "find_exported_dentry: npd != pd",
1033 fix permission error with open files at nfs.
1034 fix apply umask when do revalidate.
1037 Frequency : occasional
1039 Description: Crash on NFS re-export node
1040 Details : calling clear_page() on the wrong pointer triggered oops in
1041 generic_mapping_read().
1044 Frequency : rarely, using O_DIRECT IO
1046 Description: unaligned directio crashes client with LASSERT
1047 Details : check for unaligned buffers before trying any requests.
1050 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
1052 Description: stale data returned from RAID cache
1053 Details : If only a small amount of IO is done to the RAID device before
1054 reading it again it is possible to get stale data from the RAID
1055 cache instead of reading it from disk.
1058 Frequency : always for sles10 kernel
1060 Description: sles10 support
1061 Details : ll_follow_link: compile fixes and using of nd_set_link
1062 under newer kernels.
1065 Frequency : depends on arch, kernel and compiler version, always on sles10
1068 Description: recursive or deep enough symlinks cause stack overflow
1069 Details : getting rid of large stack-allocated variable in
1073 Frequency : depends on hardware
1075 Description: lustre write performance loss in the SLES10 kernel
1076 Details : the performance loss is caused by using of write barriers in the
1077 ext3 code. The SLES10 kernel turns barrier support on by
1078 default. The fix is to undo that change for ldiskfs.
1080 ------------------------------------------------------------------------------
1082 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
1084 * Support for kernels:
1085 2.6.9-42.0.3EL (RHEL 4)
1086 2.6.5-7.276 (SLES 9)
1087 2.4.21-47.0.1.EL (RHEL 3)
1088 2.6.12.6 vanilla (kernel.org)
1092 Frequency : quota enabled and large files being deleted
1094 Description: releasing more than 4GB of quota at once hangs OST
1095 Details : If a user deletes more than 4GB of files on a single OST it
1096 will cause the OST to spin in an infinite loop. Release
1097 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1102 Description: statfs data retrieved from /proc may be stale or zero
1103 Details : When reading per-device statfs data from /proc, in the
1104 {kbytes,files}_{total,free,avail} files, it may appear
1105 as zero or be out of date.
1108 Frequency : systems with MD RAID1 external journal devices
1110 Description: lconf's call to blkid is confused by RAID1 journal devices
1111 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1112 of returning all block devices that match the journal UUID.
1115 Frequency : always, for aggregate stripe size over 4GB
1117 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
1118 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
1119 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
1122 Frequency : always if "lfs find" used on a local file/directory
1124 Description: "lfs find" segfaults if used on a local file/directory
1125 Details : The case where a directory component was not specified wasn't
1126 handled correctly. Handle this properly.
1129 Frequency : always on ppc64
1131 Description: the write to an ext3 filesystem mounted with mballoc got stuck
1132 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1133 perform endianness conversion.
1136 Frequency : rarely (truncate to non-zero file size after write under load)
1137 Bugzilla : 10730, 10687
1138 Description: Files padded with zeros to next 4K multiple
1139 Details : With filesystems mounted using the "extents" option (2.6 kernels)
1140 it is possible that files that are truncated to a non-zero size
1141 immediately after being written are filled with zero bytes beyond
1142 the truncated size. No file data is lost.
1144 Severity : enhancement
1146 Description: Allow recovery/failover for liblustre clients.
1147 Details : liblustre clients were unaware of failover configurations until
1150 Severity : enhancement
1152 Description: user file locks should fail when not mounting with flock option
1153 Details : Set up an error-returning stub in ll_file_operations.lock field
1154 to prevent incorrect behaviour when client is mounted without
1155 flock option. Also, set up properly f_op->flock field for
1159 Frequency : always on ia64
1161 Description: "lfs df" loops on printing out MDS statfs information
1162 Details : The obd_ioctl_data was not initialized and in some systems
1163 this caused a failure during the ioctl that did not return
1164 an error. Initialize the struct and return an error on failure.
1167 Frequency : SLES 9 only
1169 Description: Error of copying files with lustre special EAs as root
1170 Details : Client side always return success for setxattr call for lustre
1171 special xattr (currently only "trusted.lov").
1174 Frequency : rarely on clusters with both ia64+i386 clients
1176 Description: ia64+i686 clients doing shared IO on the same file may LBUG
1177 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
1178 clients are doing concurrent writes to the same file it is
1179 possible that the ia64 clients may LASSERT because the OST
1180 extent locks are not PAGE_SIZE aligned. Ensure that grown
1181 locks are always aligned on the request boundary.
1184 Frequency : specific use, occasional
1186 Description: Overwriting in use executable truncates on-disk binary image
1187 Details : If one node attempts to overwrite an executable in use by
1188 another node, we now correctly return ETXTBSY instead of
1189 truncating the file.
1191 Severity : enhancement
1193 Description: Async OSC create to avoid the blocking unnecessarily.
1194 Details : If a OST has no remain object, system will block on the creating
1195 when need to create a new object on this OST. Now, ways use
1196 pre-created objects when available, instead of blocking on an
1197 empty osc while others are not empty. If we must block, we block
1198 for the shortest possible period of time.
1203 Description: chmod on Lustre root is propagated to other clients
1204 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
1205 invalid by the follow_mount time.
1208 Frequency : liblustre clients only
1210 Description: Race in 'instant cancel' lock handling could lead to such locks
1211 never to be granted in case of SMP MDS
1212 Details : Do not destroy not yet granted but cbpending locks in
1216 Frequency : replay/resend of open
1218 Description: non null lock assetion failure in mds_intent_policy
1219 Details : Trying to replay/resend lockless open requests resulted in
1220 mds_open() returning 0 with no lock. Now it sets a flag if
1221 a lock is going to be returned.
1223 Severity : enhancement
1225 Description: Checksum enhancements
1226 Details : New checksum enhancements allow for resending RPCs that failed
1229 Severity : enhancement
1231 Description: Tunables on number of dirty pages in cacche
1232 Details : Allow to set limit on number of dirty pages cached.
1237 Description: client crash on unmount - lock still has references
1238 Details : In some error handling cases it was possible to leak a lock
1239 reference on a client while accessing a file. This was not
1240 harmful to the client during operation, but would cause the
1241 client to crash when the filesystem is unmounted.
1244 Frequency : specific case, rare
1246 Description: ETXTBSY on mds though file not in use by client
1247 Details : ETXTBSY is no longer incorrectly returned when attempting to
1248 chmod or chown a directory that the user previously tried to
1249 execute or a currently-executing binary.
1252 Frequency : extremely rare except on liblustre-based clients
1254 Description: Lustre space not freed when files are deleted
1255 Details : Clean up open-unlinked files after client eviction. Previously
1256 the unlink was skipped and the files remained as orphans.
1261 Description: OST failure "would be an LBUG" in waiting_locks_callback()
1262 Details : In some cases it was possible to send a blocking callback to
1263 a client doing a glimpse, even though that client didn't get
1264 a lock granted. When the glimpse lock is cancelled on the OST
1265 the freed lock is left on the waiting list and corrupted the list.
1268 Frequency : all core dumps
1270 Description: Broke core dumps to lustre
1271 Details : Negative dentry may be unhashed if parent does not have UPDATE
1272 lock, but some callers, e.g. do_coredump, expect dentry to be
1273 hashed after successful create, hash it in ll_create_it.
1275 ------------------------------------------------------------------------------
1277 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
1279 * Support for kernels:
1280 2.6.9-42.0.2.EL (RHEL 4)
1281 2.6.5-7.276 (SLES 9)
1282 2.4.21-40.EL (RHEL 3)
1283 2.6.12.6 vanilla (kernel.org)
1287 Frequency : always on RHEL 3
1289 Description: Number of open files grows over time
1290 Details : The number of open files grows over time, whether or not
1291 Lustre is started. This was due to a filp leak introduced
1292 by one of our kernel patches.
1294 ------------------------------------------------------------------------------
1296 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1298 * Support for kernels:
1299 2.6.9-42.EL (RHEL 4)
1300 2.6.5-7.276 (SLES 9)
1301 2.4.21-40.EL (RHEL 3)
1302 2.6.12.6 vanilla (kernel.org)
1307 Bugzilla : 5719, 9635, 9792, 9684
1308 Description: OST (or MDS) trips assertions in (re)connection under heavy load
1309 Details : If a server is under heavy load and cannot reply to new
1310 connection requests before the client resends the (re)connect,
1311 the connection handling code can behave badly if two service
1312 threads are concurrently handing separate (re)connections from
1313 the same client. Add better locking to the connection handling
1314 code, and ensure that only a single connection will be processed
1315 for a given client UUID, even if the lock is dropped.
1317 Severity : enhancement
1319 Description: add TCP zero-copy support to kernel
1320 Details : Add support to the kernel TCP stack to allow zero-copy bulk
1321 sends if the hardware supports scatter-gather and checksumming.
1322 This allows socklnd to do client-write and server-read more
1323 efficiently and reduce CPU utilization from skbuf copying.
1326 Frequency : only if NFS exporting from client
1328 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
1329 Details : If setting attributes on a file created under NFS that had
1330 never been opened it would be possible to oops the client
1331 if the file had no objects.
1334 Frequency : always for liblustre
1336 Description: liblustre client does MDS+OSTs setattr RPC for each write
1337 Details : When doing a write from a liblustre client, the client
1338 incorrectly issued an RPC to the MDS and each OST the file was
1339 striped over in order to update the timestamps. When writing
1340 with small chunks and many clients this could overwhelm the MDS
1341 with RPCs. In all cases it would slow down the write because
1342 these RPCs are unnecessary.
1344 Severity : enhancement
1346 Description: allow number of MDS service threads to be changed at module load
1347 Details : It is now possible to change the number of MDS service threads
1348 running. Adding "options mds mds_num_threads={N}" to the MDS's
1349 /etc/modprobe.conf will set the number of threads for the next
1350 time Lustre is restarted (assuming the "mds" module is also
1351 reloaded at that time). The default number of threads will
1352 stay the same, 32 for most systems.
1357 Description: OST crash if filesystem is unformatted or corrupt
1358 Details : If an OST is started on a device that has never been formatted
1359 or if the filesystem is corrupt and cannot even mount then the
1360 error handling cleanup routines would dereference a NULL pointer.
1365 Description: NULL pointer deref in llap_from_page.
1366 Details : get_cache_page_nowait can return a page with NULL (or otherwise
1367 incorrect) mapping if the page was truncated/reclaimed while it was
1368 searched for. Check for this condition and skip such pages when
1369 doing readahead. Introduce extra check to llap_from_page() to
1370 verify page->mapping->host is non-NULL (so page is not anonymous).
1373 Frequency : Sometimes when using sys_sendfile
1375 Description: "page not covered by a lock" warnings from ll_readpage
1376 Details : sendfile called ll_readpage without right page locks present.
1377 Now we introduced ll_file_sendfile that does necessary locking
1378 around call to generic_file_sendfile() much like we do in
1382 Frequency : with certain MDS communication failures at client mount time
1384 Description: NULL pointer deref after failed client mount
1385 Details : a client connection request may delayed by the network layer
1386 and not be sent until after the PTLRPC layer has timed out the
1387 request. If the client fails the mount immediately it will try
1388 to clean up before the network times out the request. Add a
1389 reference from the request import to the obd device and delay
1390 the cleanup until the network drops the request.
1393 Frequency : occasionally during client (re)connect
1395 Description: assertion failure during client (re)connect
1396 Details : processing a client connection request may be delayed by the
1397 client or server longer than the client connect timeout. This
1398 causes the client to resend the connection request. If the
1399 original connection request is replied in this interval, the
1400 client may trip an assertion failure in ptlrpc_connect_interpret()
1401 which thought it would be the only running connect process.
1404 Frequency : only with obd_echo servers and clients that are rebooted
1406 Description: kernel BUG accessing uninitialized data structure
1407 Details : When running an obd_echo server it did not start the ping_evictor
1408 thread, and when a client was evicted an uninitialized data
1409 structure was accessed. Start the ping_evictor in the RPC
1410 service startup instead of the OBD startup.
1412 Severity : enhancement
1413 Bugzilla : 10193 (patchless)
1414 Description: Remove dependency on various unexported kernel interfaces.
1415 Details : No longer need reparent_to_init, exit_mm, exit_files,
1416 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
1419 Frequency : rare (only users of deprecated and unsupported LDAP config)
1421 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
1422 Details : LDAP apparently contains 'lustreName' attributes instead of
1423 'name'. A simple remapping of the name is sufficient.
1426 Frequency : rare (only with non-default dump_on_timeout debug enabled)
1428 Description: waiting_locks_callback trips kernel BUG if client is evicted
1429 Details : Running with the dump_on_timeout debug flag turned on makes
1430 it possible that the waiting_locks_callback() can try to dump
1431 the Lustre kernel debug logs from an interrupt handler. Defer
1432 this log dumping to the expired_lock_main() thread.
1434 Severity : enhancement
1436 Description: Support NFS exporting on 2.6 kernels.
1437 Details : Implement non-rawops metadata methods for NFS server to use without
1438 changing NFS server code.
1441 Frequency : very rare (synthetic metadata workload only)
1443 Description: two racing renames might cause an MDS thread to deadlock
1444 Details : Running the "racer" program may cause one MDS thread to rename
1445 a file from being the source of a rename to being the target of
1446 a rename at exactly the same time that another thread is doing
1447 so, and the second thread has already enqueued these locks after
1448 doing a lookup of the target and is trying to relock them in
1449 order. Ensure that we don't try to re-lock the same resource.
1452 Frequency : only very large systems with liblustre clients
1454 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
1455 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
1456 all OSTs in parallel. This allows the eviction of stale liblustre
1457 clients to proceed much faster than if they were done in series,
1458 and also offers similar improvements for other set_info RPCs.
1463 Description: excessive CPU usage during initial read phase on client
1464 Details : During the initial read phase on a client, it would agressively
1465 retry readahead on the file, consuming too much CPU and impacting
1466 performance (since 1.4.5.8). Improve the readahead algorithm
1467 to avoid this, and also improve some other common cases (read
1468 of small files in particular, where "small" is files smaller than
1469 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
1474 Description: MDS crash when receiving packet with unknown intent.
1475 Details : Do not LBUG in unknown intent case, just return -EFAULT
1477 Severity : enhancement
1478 Bugzilla : 9293, 9385
1479 Description: MDS RPCs are serialised on client. This is unnecessary for some.
1480 Details : Do not serialize getattr (non-intent version) and statfs.
1483 Frequency : occasional, when OST network is overloaded/intermittent
1485 Description: client evicted by OST after bulk IO timeout
1486 Details : If a client sends a bulk IO request (read or write) the OST
1487 may evict the client if it is unresposive to its data GET/PUT
1488 request. This is incorrect if the network is overloaded (takes
1489 too long to transfer the RPC data) or dropped the OST GET/PUT
1490 request. There is no need to evict the client at all, since
1491 the pinger and/or lock callbacks will handle this, and the
1492 client can restart the bulk request.
1495 Frequency : Always when mmapping file with no objects
1497 Description: client crashes when mmapping file with no objects
1498 Details : Check that we actually have objects in a file before doing any
1499 operations on objects in ll_vm_open, ll_vm_close and
1505 Description: Request leak when working with deleted CWD
1506 Details : Introduce advanced request refcount tracking for requests
1507 referenced from lustre intent.
1509 Severity : Enhancement
1511 Description: Cache open file handles on client.
1512 Details : MDS now will return special lock along with openhandle, if
1513 requested and client is allowed to hold openhandle, even if unused,
1514 until such a lock is revoked. Helps NFS a lot, since NFS is opening
1515 closing files for every read/write openration.
1517 Severity : Enhancement
1519 Description: Cache open negative dentries on client when possible.
1520 Details : Guard negative dentries with UPDATE lock on parent dir, drop
1521 negative dentries on lock revocation.
1526 Description: Remounting a client read-only wasn't possible with a zconf mount
1527 Details : It wasn't possible to remount a client read-only with llmount.
1529 Severity : enhancement
1530 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
1531 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
1532 MPICH is included to add Lustre-specific ADIO interfaces.
1533 This is based closely on the UFS ADIO layer and only differs
1534 in file creation, in order to allow the OST striping to be set.
1535 This is user-contributed code and not supported by CFS.
1540 Description: extended inode attributes (immutable, append-only) work improperly
1541 when 2.4 and 2.6 kernels are used on client/server or vice versa
1542 Details : Introduce kernel-independent values for these flags.
1544 Severity : enhancement
1547 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
1548 Details : Many of the /proc/ tunables can only be tuned at a megabyte
1549 granularity. Now, Fractional MB granularity is be supported,
1550 this is very useful for low memory system.
1552 Severity : enhancement
1554 Description: Getattr by fid
1555 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
1556 locks, avoids extra getattr rpc requests to MDS, allows '/' to
1557 have locks and avoids getattr rpc requests for it on every stat.
1560 Frequency : Always, for filesystems larger than 2TB
1562 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1563 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
1564 filesystems larger than 2TB to be mounted with mballoc enabled.
1567 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
1569 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1570 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
1571 filesystems larger than 2TB is mounted then the kernel will
1572 silently corrupt the start of the filesystem. CONFIG_LBD is
1573 enabled for all CFS-supported kernels, but the possibility of
1574 this happening with a modified kernel config exists.
1576 Severity : enhancement
1578 Description: add client O_DIRECT support for 2.6 kernels
1579 Details : It is now possible to do O_DIRECT reads and writes to files
1580 in the Lustre client mountpoint on 2.6 kernel clients.
1582 Severity : enhancement
1584 Description: parallel glimpse, setattr, statfs, punch, destroy requests
1585 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
1586 parallel, not waiting for response from every OST before sending
1587 a rpc to the next OST.
1592 Description: setattr vs write race when updating file timestamps
1593 Details : Client processes that update a file timestamp into the past
1594 right after writing to the file (e.g. tar) it is possible that
1595 the updated file modification time can be reset to the current
1596 time due to a race between processing the setattr and write RPC.
1598 Severity : enhancement
1600 Description: Bring 'lfs find' closer in line with regular Linux find.
1601 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
1602 -print0 options and obtains all the needed info through the lustre
1605 Severity : enhancement
1607 Description: support up to 1024 configured devices on one node
1608 Details : change obd_dev array from statically allocated to dynamically
1609 allocated structs as they are first used to reduce memory usage
1614 Description: Flush dirty partially truncated pages during truncate
1615 Details : Immediatelly flush partially truncated pages in filter_setattr,
1616 this way we completely avoid having any pages in page cache on OST
1617 and can retire ugly workarounds during writes to flush such pages.
1622 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1623 Details : protect inode from truncation within vfs_unlink() context
1624 just take a reference before calling vfs_unlink() and release it
1625 when parent's i_sem is free.
1630 Description: last_id value checked outside lock on OST caused LASSERT failure
1631 Details : If there were multiple MDS->OST object precreate requests in
1632 flight, it was possible that the OST's last object id was checked
1633 outside a lock and incorrectly tripped an assertion. Move checks
1634 inside locks, and discard old precreate requests.
1637 Frequency : always, if extents are used on OSTs
1639 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1640 Details : OSTs using the extents format would not zero the high 16 bits of
1641 the index physical block number. This is not a problem for any
1642 OST filesystems smaller than 16TB, and no kernels support ext3
1643 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1644 new/modified files) and can be fixed for existing filesystems
1645 with e2fsprogs-1.39-cfs1.
1650 Description: import connection selection may be incorrect if timer wraps
1651 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1652 import connections to be ignored if the 32-bit jiffies counter
1653 wraps. Use a 64-bit jiffies counter.
1656 Frequency : very large clusters immediately after boot
1658 Description: LNET request buffers exhausted under heavy short-term load
1659 Details : If a large number of client requests are generated on a service
1660 that has previously never seen so many requests it is possible
1661 that the request buffer growth cannot keep up with the spike in
1662 demand. Instead of dropping incoming requests, they are held in
1663 the LND until the RPC service can accept more requests.
1666 Frequency : Sometimes during replay
1668 Description: Assertion failure in ll_local_open after replay.
1669 Details : If replay happened on an open request reply before we were able
1670 to set replay handler, reply will become not swabbed tripping the
1671 assertion in ll_local_open. Now we set the handler right after
1672 recognising of open request
1675 Frequency : very rare
1677 Description: kernel reports "badness in vsnprintf"
1678 Details : Reading from the "recovery_status" /proc file in small chunks
1679 may cause a negative length in lprocfs_obd_rd_recovery_status()
1680 call to vsnprintf() (which is otherwise harmless). Exit early
1681 if there is no more space in the output buffer.
1683 Severity : enhancement
1685 Description: clear OBD RPC statistics by writing to them
1686 Details : It is now possible to clear the OBD RPC statistics by writing
1687 to the "stats" file.
1692 Description: Client mtime is not the same on different clients after utimes
1693 Details : In some cases, the client was using the utimes() syscall on
1694 a file cached on another node. The clients now validate the
1695 ctime from the MDS + OSTs to determine which one is right.
1700 Description: Inability to activate failout mode
1701 Details : lconf script incorrectly assumed that in pythong string's numeric
1702 value is used in comparisons.
1705 Frequency : always with multiple stripes per file
1707 Description: Inefficient object allocation for mutli-stripe files
1708 Details : When selecting which OSTs to stripe files over, for files with
1709 a stripe count that divides evenly into the number of OSTs,
1710 the MDS is always picking the same starting OST for each file.
1711 Return the OST selection heuristic to the original design.
1716 Description: mount failures may take full timeout to return an error
1717 Details : Under some heavy load conditions it is possible that a
1718 failed mount can wait for the full obd_timeout interval,
1719 possibly several minutes, before reporting an error.
1720 Instead return an error as soon as the status is known.
1722 Frequency : quota enabled and large files being deleted
1724 Description: releasing more than 4GB of quota at once hangs OST
1725 Details : If a user deletes more than 4GB of files on a single OST it
1726 will cause the OST to spin in an infinite loop. Release
1727 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1732 Description: statfs data retrieved from /proc may be stale or zero
1733 Details : When reading per-device statfs data from /proc, in the
1734 {kbytes,files}_{total,free,avail} files, it may appear
1735 as zero or be out of date.
1738 Frequency : systems with MD RAID1 external journal devices
1740 Description: lconf's call to blkid is confused by RAID1 journal devices
1741 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1742 of returning all block devices that match the journal UUID.
1745 Frequency : always, for aggregate stripe size over 4GB
1747 Description: assertion fails when trying to use 4GB stripe size
1748 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
1749 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
1752 Frequency : always on ppc64
1754 Description: the first write on an ext3 filesystem with mballoc got stuck
1755 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1756 perform endianness conversion.
1758 ------------------------------------------------------------------------------
1760 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1762 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
1763 INTEROPERATE with older versions automatically. Please read the
1764 user documentation before upgrading any part of a live system.
1765 * WARNING: Lustre networking configuration changes are required with
1766 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
1769 * Support for kernels:
1770 2.6.9-22.0.2.EL (RHEL 4)
1771 2.6.5-7.244 (SLES 9)
1772 2.6.12.6 vanilla (kernel.org)
1775 Severity : enhancement
1776 Bugzilla : 7981/8208
1777 Description: Introduced Lustre Networking (LNET)
1778 Details : LNET is new networking infrastructure for Lustre, it includes
1779 a reorganized network configuration mode (see the user
1780 documentation for full details) as well as support for routing
1781 between different network fabrics. Lustre Networking Devices
1782 (LNDs) for the supported network fabrics have also been
1783 created for this new infrastructure.
1785 Severity : enhancement
1786 Description: Introduced Access control lists
1787 Details : clients can set ACLs on files and directories in order to have
1788 more fine-grained permissions than the standard Unix UGO+RWX.
1789 The MDS must be started with the "-o acl" mount option.
1791 Severity : enhancement
1792 Description: Introduced filesystem quotas
1793 Details : Administrators may now establish per-user quotas on the
1796 Severity : enhancement
1798 Description: Configuration change for the XT3
1799 The PTLLND is now used to run Lustre over Portals on the XT3
1800 The configure option(s) --with-cray-portals are no longer used.
1801 Rather --with-portals=<path-to-portals-includes> is used to
1802 enable building on the XT3. In addition to enable XT3 specific
1803 features the option --enable-cray-xt3 must be used.
1808 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
1809 Details : A race between allocating a new llcd and re-getting the llcd_lock
1810 allowed another thread to grab newly-allocated llcd.
1812 Severity : enhancement
1814 Description: 2.6 OST async journal commit and locking fix to improve performance
1815 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
1816 2.6 kernels are now async as they already were in 2.4 kernels so
1817 that they can commit concurrently with the network bulk transfer.
1818 For block-allocated files the filter allocation semaphore is held
1819 to avoid filesystem fragmentation during allocation. BKL lock
1820 removed for 2.6 xattr operations where it is no longer needed.
1825 Description: lconf incorrectly determined whether two IP networks could talk
1826 Details : In some more complicated routing and multiple-network
1827 configurations, lconf will avoid trying to make a network
1828 connection to a disjoint part of the IP space. It was doing the
1829 math incorrectly for one set of cases.
1834 Description: Fix for potential infinite loop processing records in an llog.
1835 Details : If an llog record is corrupted/zeroed, it is possible to loop
1836 forever in llog_process(). Validate the llog record length
1837 and skip the remainder of the block on error.
1840 Frequency : occasional (liblustre only)
1842 Description: liblustre could not open files whose last component is a symlink
1843 Details : sysio_path_walk() would incorrectly pass the open intent to
1844 intermediate path components.
1847 Frequency : rare (liblustre only with non-standard tuning)
1848 Bugzilla : 7201 (7350)
1849 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
1850 Details : llu_lookup_finish_locks() tries to set lock data on a lock
1851 after it has been released, only do this for referenced locks
1853 Severity : enhancement
1855 Description: specifying an (invalid) directory default stripe_size of -1
1856 would reset the directory default striping
1857 Details : stripe_size -1 was used internally to signal directory stripe
1858 removal, now use "all default" to signal dir stripe removal
1859 as a directory striping of "all default" is not useful
1862 Frequency : common for large clusters running liblustre clients
1864 Description: doing an ls when liblustre clients are running is slow
1865 Details : sending a glimpse AST to a liblustre client waits for every AST
1866 to time out, as liblustre clients will not respond. Since they
1867 cannot cache data we refresh the OST lock LVB from disk instead.
1869 Severity : enhancement
1871 Description: doing an ls at the same time as file IO can be slow
1872 Details : enqueue and other "small" requests can be blocked behind many
1873 large IO requests. Create a new OST IO portal for non-IO
1874 requests so they can be processed faster.
1877 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
1879 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
1880 created file with mode 000
1881 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
1882 allow an ftruncate() as a non-root user to a file with mode 000.
1883 Lustre now respects this flag to disable mode checks when
1884 truncating a file owned by the user
1887 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
1890 Description: Revoking locks from clients that went dead or catatonic might take
1892 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
1893 cancellation of such locks instant on servers without waiting for
1894 any reply from clients. Clients drops these locks when cancel
1895 notification from server is received without replying.
1898 Frequency : liblustre-only, when liblustre client dies or becomes busy
1900 Description: Doing ls on Linux clients can take a long time with active
1902 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
1903 granting such locks to it in the first place if possible. Locks
1904 are taken by proxy on the OST during the read or write and
1905 dropped immediately afterward. Add connect flags handling, do
1906 not grant locks to liblustre clients for glimpse ASTs.
1908 Severity : enhancement
1910 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
1911 Details : Existing read-ahead algorithm is tuned for the case of streamlined
1912 sequential reads and behaves badly with applications doing random
1913 reads. Improve it by reading ahead at least read region, and
1914 avoiding excessive large RPC for small reads.
1916 Severity : enhancement
1918 Description: Creating more than 1000 files for a single job may cause a load
1919 imbalance on the OSTs if there are also a large number of OSTs.
1920 Details : qos_prep_create() uses an OST index reseed value that is an
1921 even multiple of the number of available OSTs so that if the
1922 reseed happens in the middle of the object allocation it will
1923 still utilize the OSTs as uniformly as possible.
1928 Description: OST or MDS may oops in ping_evictor_main()
1929 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
1930 but doesn't restart at beginning of obd_exports_timed list
1933 Severity : enhancement
1935 Description: improve by-nid export eviction on the MDS and OST
1936 Details : allow multiple exports with the same NID to be evicted at one
1937 time without re-searching the exports list.
1940 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
1942 Description: MDS may oops in groups_free()
1943 Details : in rare race conditions a newly allocated group_info struct is
1944 freed again, and this can be NULL. The 2.4 compatibility code
1945 for groups_free() checked for a NULL pointer, but 2.6 did not.
1948 Frequency : common for liblustre clients doing little filesystem IO
1949 Bugzilla : 9352, 7313
1950 Description: server may evict liblustre clients accessing contended locks
1951 Details : if a client is granted a lock or receives a completion AST
1952 with a blocking AST already set it would not reply to the AST
1953 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
1956 Frequency : lfs setstripe, only systems with more than 160 OSTs
1958 Description: unable to set striping with a starting offset beyond OST 160
1959 Details : llapi_create_file() incorrectly limited the starting stripe
1960 index to the maximum single-file stripe count.
1963 Frequency : LDAP users only
1965 Description: lconf did not handle in-kernel recovery with LDAP properly
1966 Details : lconf/LustreDB get_refs() is searching the wrong namespace
1968 Severity : enhancement
1970 Description: bind OST threads to NUMA nodes to improve performance
1971 Details : all OST threads are uniformly bound to CPUs on a single NUMA
1972 node and do their allocations there to localize memory access
1974 Severity : enhancement
1976 Description: llmount can determine client NID directly from Myrinet (GM)
1977 Details : the client NID code from gmnalnid was moved directly into
1978 llmount, removing the need to use this or specifying the
1979 client NID explicitly when mounting GM clients with zeroconf
1982 Frequency : if client is started with down MDS
1984 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
1985 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
1986 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
1987 ptlrpc_import_delayed_req() because we didn't check if the
1988 request was interrupted, and we also didn't break out of the
1989 event loop if there was no timeout
1994 Description: data loss during non-page-aligned writes to a single file from
1995 both multiple nodes and multiple threads on one node at same time
1996 Details : updates to KMS and lsm weren't protected by common lock. Resulting
1997 inconsistency led to false short-reads, that were cached and later
1998 used by ->prepare_write() to fill in partially written page,
1999 leading to data loss.
2002 Frequency : always, if lconf --abort_recovery used
2004 Description: lconf --abort_recovery fails with 'Operation not supported'
2005 Details : lconf was attempting to abort recovery on the MDT device and not
2008 Severity : enhancement
2010 Description: remove cleanup logs
2011 Details : replace lconf-generated cleanup logs with lustre internal
2012 cleanup routines. Eliminates the need for client-cleanup and
2015 Severity : enhancement
2017 Description: add support for EAs (user and system) on lustre filesystems
2018 Details : it is now possible to store extended attributes in the Lustre
2019 client filesystem, and with the user_xattr mount option it
2020 is possible to allow users to store EAs on their files also
2022 Severity : enhancement
2024 Description: Add possibility (config option) to show minimal available OST free
2026 Details : When compiled with --enable-mindf configure option, statfs(2)
2027 (and so, df) will return least minimal free space available from
2028 all OSTs as amount of free space on FS, instead of summary of
2029 free spaces of all OSTs.
2031 Severity : enhancement
2033 Description: do not expand extent locks acquired on OST-side
2034 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
2035 by server: they are not cached anyway.
2038 Frequency : when mmap is used/binaries executed from Lustre
2040 Description: Unmmap pages before throwing them away from read cache.
2041 Details : llap_shrink cache now attempts to unmap pages before discarding
2042 them (if unmapping failed - do not discard). SLES9 kernel has
2043 extra checks that trigger if this unmapping is not done first.
2048 Description: lconf didn't resolve symlinks before checking to see whether a
2049 given mountpoint was already in use
2052 Frequency : when migrating failover services
2053 Bugzilla : 6395, 9514
2054 Description: When migrating a subset of services from a node (e.g. failback
2055 from a failover service node) the remaining services would
2056 time out and evict clients.
2057 Details : lconf --force (implied by --failover) sets the global obd_timeout
2058 to 5 seconds in order to quickly disconnect, but this caused
2059 other RPCs to time out too quickly. Do not change the global
2060 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
2062 Severity : enhancement
2063 Frequency : if MDS is started with down OST
2064 Bugzilla : 9439,5706
2065 Description: Allow startup/shutdown of an MDS without depending on the
2066 availability of the OSTs.
2067 Details : Asynchronously call mds_lov_synchronize during MDS startup.
2068 Add appropriate locking and lov-osc refcounts for safe
2069 cleaning. Add osc abort_inflight calls in case the
2070 synchronize never started.
2073 Frequency : occasional (Cray XT3 only)
2075 Description: root not authorized to access files in CRAY_PORTALS environment
2076 Details : The client process capabilities were not honoured on the MDS in
2077 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
2078 been accessed by an authorized user then root was able to access
2079 the file on the local client also. The root user capabilities
2080 are now allowed on the MDS, as this environment has secure UID.
2083 Frequency : occasional
2085 Description: ldiskfs "too long searching" message happens too often
2086 Details : A debugging message (otherwise harmless) prints too often on
2087 the OST console. This has been reduced to only happen when
2088 there are fragmentation problems on the filesystem.
2093 Description: Division by zero in statfs when all OSCs are inactive
2094 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
2095 lov_statfs divides by value returned by lov_get_stripecnt().
2099 Bugzilla : 9489, 3273
2100 Description: First write from each client to each OST was only 4kB in size,
2101 to initialize client writeback cache, which caused sub-optimal
2102 RPCs and poor layout on disk for the first writen file.
2103 Details : Clients now request an initial cache grant at (re)connect time
2104 and so that they can start streaming writes to the cache right
2105 away and always do full-sized RPCs if there is enough data.
2106 If the OST is rebooted the client also re-establishes its grant
2107 so that client cached writes will be honoured under the grant.
2112 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
2113 Details : Now I/O RPCs go to different portal number and (presumably) fast
2114 lock requests (and glimses) and other RPCs get their own service
2115 threads pool that should be able to service those RPCs
2118 Severity : enhancement
2120 Description: Ability to exchange lustre version between client and servers and
2121 issue warnings at client side if client is too old. Also for
2122 liblustre clients there is ability to refuse connection of too old
2124 Details : New 'version' field is added to connect data structure that is
2125 filled with version info. That info is later checked by server and
2129 Frequency : rare, liblustre only.
2130 Bugzilla : 9296, 9581
2131 Description: Two simultaneous writes from liblustre at offset within same page
2132 might proceed at the same time overwriting eachother with stale
2134 Details : I/O lock withing llu_file_prwv was released too early, before data
2135 actually was hitting the wire. Extended lock-holding time until
2136 server acknowledges receiving data.
2139 Frequency : extremely rare. Never observed in practice.
2141 Description: avoid generating lustre_handle cookie of 0.
2142 Details : class_handle_hash() generates handle cookies by incrementing
2143 global counter, and can hit 0 occasionaly (this is unlikely, but
2144 not impossible, because initial value of cookie counter is
2145 selected randonly). Value of 0 is used as a sentinel meaning
2146 "unassigned handle" --- avoid it. Also coalesce two critical
2147 sections in this function into one.
2149 Severity : enhancement
2151 Description: allow liblustre clients to delegate truncate locking to OST
2152 Details : To avoid overhead of locking, liblustre client instructs OST to
2153 take extent lock in ost_punch() on client's behalf. New connection
2154 flag is added to handle backward compatibility.
2156 Severity : enhancement
2157 Bugzilla : 4928, 7341, 9758
2158 Description: allow number of OST service threads to be specified
2159 Details : a module parameter allows the number of OST service threads
2160 to be specified via "options ost ost_num_threads={N}" in the
2161 OSS's /etc/modules.conf or /etc/modprobe.conf.
2165 Bugzilla : 6146, 9635, 9895
2166 Description: servers crash with bad pointer in target_handle_connect()
2167 Details : In rare cases when a client is reconnecting it was possible that
2168 the connection request was the last reference for that export.
2169 We would temporarily drop the export reference and get a new
2170 one, but this may have been the last reference and the export
2171 was just destroyed. Get new reference before dropping old one.
2173 Severity : enhancement
2174 Frequency : if client is started with failover MDS
2176 Description: Allow multiple MDS hostnames in the mount command
2177 Details : Try to read the configuration from all specified MDS
2178 hostnames during a client mount in case the "primary"
2181 Severity : enhancement
2183 Description: Stop sending data to evicted clients as soon as possible.
2184 Details : Check if the client we are about to send or are sending data to
2185 was evicted already. (Check is done every second of waiting,
2186 for which l_wait_event interface was extended to allow checking
2187 of exit condition at specified intervals).
2190 Frequency : rare, normally only when NFS exporting is done from client
2192 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
2194 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
2197 Frequency : always, if srand() is called before liblustre initialization
2199 Description: Liblustre uses system PRNG disturbing its usage by user application
2200 Details : Introduce internal to lustre fast and high-quality PRNG for
2201 lustre usage and make liblustre and some other places in generic
2202 lustre code to use it.
2204 Severity : enhancement
2205 Bugzilla : 9477, 9557, 9870
2206 Description: Verify that the MDS configuration logs are updated when xml is
2207 Details : Check if the .xml configuration logs are newer than the config
2208 logs stored on the MDS and report an error if this is the case.
2209 Request --write-conf, or allow starting with --old_conf.
2211 Severity : enhancement
2213 Description: Handle symlinks in the path when checking if Lustre is mounted.
2214 Details : Resolve intermediate symlinks when checking if a client has
2215 mounted a filesystem to avoid duplicate client mounts.
2220 Description: lconf can hit an error exception but still return success.
2221 Details : The lconf command catches the Command error exception at the top
2222 level script context and will exit with the associated exit
2223 status, but doesn't ensure that this exit status is non-zero.
2228 Description: failure of ptlrpc thread startup can cause oops
2229 Details : Starting a ptlrpc service thread can fail if there are a large
2230 number of threads or the server memory is very fragmented.
2231 Handle this without oopsing.
2234 Frequency : always, only if liblustre and non-default acceptor port was used
2236 Description: liblustre cannot connect to servers with non-default acceptor port
2237 Details : tcpnal_set_default_params() was not called and was therefore
2238 ignoring the environment varaible TCPNAL_PORT, as well as other
2239 TCPNAL_ environment variables
2244 Description: two objects could be created on the same OST for a single file
2245 Details : If an OST is down, in some cases it was possible to create two
2246 objects on a single OST for a single file. No problems other
2247 than potential performance impact and spurious error messages.
2251 Bugzilla : 5681, 9562
2252 Description: Client may oops in ll_unhash_aliases
2253 Details : Client dcache may become inconsistent in race condition.
2254 In some cases "getcwd" can fail if the current directory is
2260 Description: Inode refcounting problems in NFS export code
2261 Details : link_raw functions used to call d_instantiate without obtaining
2262 extra inode reference first.
2266 Bugzilla : 9942, 9903
2267 Description: Referencing freed requests leading to crash, memleaks with NFS.
2268 Details : We used to require that call to ll_revalidate_it was always
2269 followed by ll_lookup_it. Also with revalidate_special() it is
2270 possible to call ll_revalidate_it() twice for the same dentry
2271 even if first occurence returned success. This fix changes semantic
2272 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
2273 reference on a request referred from the intent.
2274 ll_intent_release() then releases such a request.
2277 Frequency : rare, normally benchmark loads only
2279 Description: unlinked inodes were kept in memory on the client
2280 Details : If a client is repeatedly creating and unlinking files it
2281 can accumulate a lot of stale inodes in the inode slab cache.
2282 If there is no other client load running this can cause the
2283 client node to run out of memory. Instead flush old inodes
2284 from client cache that have the same inode number as a new inode.
2287 Frequency : SLES9 2.6.5 kernel and long filenames only
2288 Bugzilla : 9969, 10379
2289 Description: utime reports stale NFS file handle
2290 Details : SLES9 uses out-of-dentry names in some cases, which confused
2291 the lustre dentry revalidation. Change it to always use the
2295 Frequency : rare, unless heavy write-truncate concurrency is continuous
2296 Bugzilla : 4180, 6984, 7171, 9963, 9331
2297 Description: OST becomes very slow and/or deadlocked during object unlink
2298 Details : filter_destroy() was holding onto the parent directory lock
2299 while truncating+unlinking objects. For very large objects this
2300 may block other threads for a long time and slow overall OST
2301 responsiveness. It may also be possible to get a lock ordering
2302 deadlock in this case, or run out of journal credits because of
2303 the combined truncate+unlink. Solution is to do object truncate
2304 first in one transaction without parent lock, and then do the
2305 final unlink in a new transaction with the parent lock. This
2306 reduces the lock hold time dramatically.
2309 Frequency : rare, 2.4 kernels only
2311 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
2312 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
2313 before unmounting their filesystem in order to avoid deadlock.
2314 The kernel_locked() function in 2.4 kernels only checks whether
2315 the kernel lock is held, not whether it is this process that is
2316 holding it as 2.6 kernels do.
2321 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
2322 Details : The client ptlrpc code may be trying to reconnect to a down
2323 server before a previous connection attempt has timed out.
2324 Increase the reconnect interval to be longer than the connection
2325 timeout interval to avoid sending duplicate connections to
2329 Frequency : echo_client brw_test command
2331 Description: fix echo_client to work with OST preallocated code
2332 Details : OST preallocation code (5137) didn't take echo_client IO path
2333 into account: echo_client calls filter methods outside of any
2334 OST thread and, hence, there is no per-thread preallocated
2335 pages and buffers to use. Solution: hijack pga pages for IO. As
2336 a byproduct, this avoids unnecessary data copying.
2340 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
2341 Description: Client can oops in mdc_commit_close() after open replay
2342 Details : It was possible for the MDS to return an open request with no
2343 transaction number in mds_finish_transno() if the client was
2344 evicted, but without actually returning an error. Clients
2345 would later try to replay that open and may trip an assertion
2346 Simplify the client close codepath, and always return an error
2347 from the MDS in case the open is not successful.
2350 Frequency : rare, 2.6 OSTs only
2352 Description: OST may deadlock under high load on fragmented files
2353 Details : If there was a heavy load and highly-fragmented OST filesystems
2354 it was possible to have all the OST threads deadlock waiting on
2355 allocation of biovecs, because the biovecs were not released
2356 until the entire RPC IO was completed. Instead, release biovecs
2357 as soon as they are complete to ensure forward IO progress.
2359 Severity : enhancement
2361 Description: Support for specifying external journal device at mount
2362 Details : If an OST or MDS device is formatted with an external journal
2363 device, this device major/minor is stored in the ext3 superblock
2364 and may not be valid for failover. Allow detecting and
2365 specifying the external journal at mount time.
2370 Description: Mounting an MDS with pending unlinked files may cause oops
2371 Details : target_finish_recovery() calls mds_postrecov() which returned
2372 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
2373 considers this an error and immediately begins cleaning up the
2374 lov, just after starting the mds_lov process
2376 Severity : enhancement
2378 Description: Implement 'lfs df' to report actual free space on per-OST basis
2379 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
2380 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
2381 usage of objects; '-h' to report in human readable format.
2383 ------------------------------------------------------------------------------
2385 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
2392 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
2393 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
2394 at startup during orphan unlinking. Instead, skip buddy update
2395 before setup, as it will be regenerated after recovery is complete.
2400 Description: If an OST is inactive, its locks might reference stale inodes.
2401 Details : lov_change_cbdata() must iterate over all namespaces, even if
2402 they are inactive to clear inode references from the lock.
2404 Severity : enhancement
2405 Frequency : occasional, if non-standard max_dirty_mb used
2407 Description: Client will block write RPCs if not enough grant
2408 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
2409 then the client will block writes while waiting for another RPC
2410 to complete instead of consuming its dirty limit. With change
2411 we get improved performance when max_dirty_mb is small.
2413 Severity : enhancement
2414 Bugzilla : 3389, 6253
2415 Description: Add support for supplementary groups on the MDS.
2416 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
2417 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
2418 lookups for user supplementary groups into a cache.
2422 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
2423 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
2424 for liblustre O_EXCL is enforced by MDS.
2428 Description: readdir never returns NULL in liblustre.
2429 Details : Corrected llu_iop_getdirentries logic, to return offset of next
2430 dentry in struct dirent.
2434 Frequency : liblustre only, depends on application IO pattern
2435 Description: liblustre clients evicted if not contacting servers
2436 Details : Don't put liblustre clients into the ping_evictor list, so
2437 they will not be evicted by the pinger ever.
2439 Severity : enhancement
2441 Description: Add ability to evict clients by NID from MDS.
2442 Details : By echoing "nid:$NID" string into
2443 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
2444 $NID would be instantly evicted from this MDS and from all active
2445 OSTs connected to it.
2449 Description: Do not query file size twice, somewhat slowing stat(2) calls.
2450 Details : lookup_it_finish() used to query file size from OSTs that was not
2455 Description: service threads change working directory to that of init
2456 Details : Starting lustre service threads may pin the working directory
2457 of the parent thread, making that filesystem busy. Threads
2458 now change to the working directory of init to avoid this.
2462 Frequency : during shutdown only
2463 Description: shutdown with a failed MDS or OST can cause unmount to hang
2464 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
2469 Frequency : 2.6 only
2470 Description: chmod/chown may include an extra supplementary group
2471 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
2472 supplementary group and if none is specified this is used.
2475 Bugzilla : 5479 (6816)
2477 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
2478 Details : If lookup is in progress on a file that is unlinked we might try
2479 to revalidate the inode and fail in revalidate after lookup is
2480 complete and ll_file_open() enqueues the open again but
2481 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
2484 Frequency : always, if lconf --abort_recovery used
2486 Description: lconf --abort_recovery fails with 'Operation not supported'
2487 Details : lconf was attempting to abort recovery on the MDT device and not
2490 ------------------------------------------------------------------------------
2492 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
2497 Frequency : rare (only unsupported configurations with a node running as an
2499 Bugzilla : 6514, 5137
2500 Description: Mounting a Lustre file system on a node running as an OST could
2502 Details : OSTs now preallocates memory needed to write out data at
2503 startup, instead of when needed, to avoid having to
2504 allocate memory in possibly low memory situations.
2505 Specifically, if the file system is mounted on on OST,
2506 memory pressure could force it to try to write out data,
2507 which it needed to allocate memory to do. Due to the low
2508 memory, it would be unable to do so and the node would
2509 become unresponsive.
2511 Severity : enhancement
2513 Description: Addition of lconf --service command line option
2514 Details : lconf now accepts a '--service <arg>' option, which is
2515 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
2517 Severity : enhancement
2519 Description: Failover mode is now the default for OSTs.
2520 Details : By default, OSTs will now run in failover mode. To return to
2521 the old behaviour, add '--failout' to the lmc line for OSTs.
2523 Severity : enhancement
2525 Description: Health checks are now provided for MDS and OSTs
2526 Details : Additional detailed health check information on MSD and OSTs
2527 is now provided through the procfs health_check value.
2530 Frequency : occasional, depends on IO load
2532 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
2533 after numerous create/delete cycles
2534 Details : The ext3 inode allocation policy would not allocate new inodes
2535 very well on the OSTs because there are no new directories
2536 being created. Instead we look for groups with free space if
2537 the parent directories are nearly full.
2542 Description: Network or server problems during mount may cause partially
2543 mounted clients instead of returning an error.
2544 Details : The config llog parsing code may overwrite the error return
2545 code during mount error handling, returning success instead
2551 Description: MDS can fail to allocate large reply buffers
2552 Details : After long uptimes the MDS can fail to allocate large reply
2553 buffers (e.g. zconf client mount config records) due to memory
2554 fragmentation or consumption by the buffer cache. Preallocate
2555 some large reply buffers so that these replies can be sent even
2556 under memory pressure.
2560 Frequency : rare (liblustre)
2561 Description: fsx running with liblustre complained that using truncate() to
2562 extend the file doesn't work. This patch corrects that issue.
2563 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
2564 ATTR_SIZE and lsm use in llu_setattr_raw.
2568 Frequency : rare, only 2.6 kernels
2569 Description: Unusual file access patterns on the MDS may result in inode
2570 data being lost in very rare circumstances.
2571 Details : Bad interaction between the ea-in-inode patch and the "no-read"
2572 code in the 2.6 kernel caused the inode and/or EA data not to
2573 be read from disk, causing single-file corruption.
2577 Frequency : rare, only 2.6 filesystems using extents
2578 Description: Heavy concurrent write and delete load may cause data corruption.
2579 Details : It was possible under high-load situations to have an extent
2580 metadata block in the block device cache from a just-unlinked
2581 file overwrite a newly-allocated data block. We now unmap any
2582 metadata buffers that alias just-allocated data blocks.
2586 Frequency : filesystems with default stripe_count larger than 77
2587 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
2588 Details : lconf specifies an inode size of 4096 bytes when the default
2589 stripe_count is larger than 77. This conflicts with the default
2590 inode density of 1 per 4096 bytes. Allocate smaller inodes in
2591 this case to avoid pinning too much memory for large EAs.
2593 ------------------------------------------------------------------------------
2595 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
2600 Frequency : rare (extremely heavy IO load with hundreds of clients)
2602 Description: Client is evicted, gets IO error writing to file
2603 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
2604 caused clients to be evicted for AST timeouts. The fixes in
2605 bug 5192 mean we no longer need to have such short AST timeouts
2606 so ldlm_timeout has been increased.
2609 Frequency : occasional during --force or --failover shutdown under load
2610 Bugzilla : 5949, 4834
2611 Description: Server oops/LBUG if stopped with --force or --failover under load
2612 Details : a collection of import/export refcount and cleanup ordering
2613 issues fixed for safer force cleanup
2616 Frequency : only filesystems larger than 120 OSTs
2617 Bugzilla : 5990, 6223
2618 Description: lfs getstripe would oops on a very large filesystem
2619 Details : lov_getconfig used kfree on vmalloc'd memory
2622 Frequency : only filesystems exporting via NFS to Solaris 10 clients
2623 Bugzilla : 6242, 6243
2624 Description: reading from files that had been truncated to a non-zero size
2625 but never opened returned no data
2626 Details : ll_file_read() reads zeros from no-object files to EOF
2631 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
2632 Details : There's little harm in aborting MDS/OSS recovery and letting it
2633 try again, so I removed the LASSERT and return an error instead.
2635 Severity : enhancement
2637 Description: New debugging infrastructure for tracking down data corruption
2638 Details : The I/O checksum code was replaced to: (a) control it at runtime,
2639 (b) cover more of the client-side code path, and (c) try to narrow
2640 down where problems occurred
2644 Bugzilla : 3819, 4364, 4397, 6313
2645 Description: Racing close and eviction MDS could cause assertion in mds_close
2646 Details : It was possible to get multiple mfd references during close and
2647 client eviction, leading to one thread referencing a freed mfd.
2649 Severity: : enhancement
2650 Bugzilla : 3262, 6359
2651 Description: Attempts to reconnect to servers are now more aggressive.
2652 Details : This builds on the enhanced upcall-less recovery that was added
2653 in 1.4.2. When trying to reconnect to servers, clients will
2654 now try each server in the failover group every 10 seconds. By
2655 default, clients would previously try one server every 25 seconds.
2660 Description: After recovery, certain operations trigger a failed
2661 assertion on a client.
2662 Details : Failing over an mds, using lconf -d --failover, while a
2663 client was doing a readdir() call would cause the client to
2664 LBUG after recovery completed and the readdir() was resent.
2666 Severity : enhancement
2668 Description: Default groups are now added by lconf
2669 Details : You can now run lconf --group <servicename> without having to
2670 manually add groups with lmc.
2673 Frequency : occasional
2675 Description: Nodes with an elan id of 0 trigger a failed assertion
2678 Frequency : always when accessing e.g. tty/console device nodes
2680 Description: tty and some other devices nodes cannot be used on lustre
2681 Details : file's private_data field is used by device data and lustre
2682 values in there got lost. New field was added to struct file to
2683 store fs-specific private data.
2686 Frequency : when exporting Lustre via NFS
2688 Description: NFSD failed occasionally when looking up a path component
2689 Details : NFSD is looking up ".." which was broken in ext3 directories
2690 that had grown large enough to become hashed.
2693 Frequency : Clusters with multiple interfaces not on the same subnet
2695 Description: Nodes will repeatedly try to reconnect to an interface which it
2696 cannot reach and report an error to the log.
2697 Details : Extra peer list entries will be created by lconf with some peers
2698 unreachable. lconf now validates the peer before adding it.
2701 Frequency : Only if a default stripe is set on the filesystem root.
2703 Description: Setting a default stripe on the filesystem root prevented the
2704 filesystem from being remounted.
2705 Details : The client was sending extra request flags in the root getattr
2706 request and did not allocate a reply buffer for the dir EA.
2709 Frequency : occasional, higher if lots of files are accessed by one client
2710 Bugzilla : 6159, 6097
2711 Description: Client trips assertion regarding lsm mismatch/magic
2712 Details : While revalidating inodes the VFS looks up inodes with ifind()
2713 and in rare cases can find an inode that is being freed.
2714 The ll_test_inode() code will free the lsm during ifind()
2715 when it finds an existing inode and then the VFS later attaches
2716 this free lsm to a new inode.
2720 Bugzilla : 6422, 7030
2721 Description: MDS deadlock between mkdir and client eviction
2722 Details : Creating a new file via mkdir or mknod (starting a transaction
2723 and getting the ns lock) can deadlock with client eviction
2724 (gets ns lock and trying to finish a synchronous transaction).
2727 Frequency : occasional
2728 Description: While starting a server, the fsfilt_ext3 module could not be
2730 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
2731 kernels. Previously, lconf would still use the ext3 name
2732 when trying to load modules. Now, it will correctly use
2733 ext3 on 2.4 and ldiskfs on 2.6.
2735 Severity : enhancement
2736 Description: The default stripe count has been changed to 1
2737 Details : The interpretation of the default stripe count (0, to lfs
2738 or lmc) has been changed to mean striping across a single
2739 OST, rather than all available. For general usage we have
2740 found a stripe count of 1 or 2 works best.
2742 Severity : enhancement
2743 Description: Add support for compiling against Cray portals.
2744 Details : Conditional compiling for some areas that are different
2748 Frequency : occasional
2749 Bugzilla : 6409, 6834
2750 Description: Creating files with an explicit stripe count may lead to
2751 a failed assertion on the MDS
2752 Details : If some OSTs are full or unavailable, creating files may
2753 trigger a failed assertion on the MDS. Now, Lustre will
2754 try to use other servers or return an error to the
2758 Frequency : occasional
2760 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
2761 caused lock timeout during readahead (since 1.4.2).
2762 Details : Processes doing readahead might match a lock that hasn't been
2763 granted yet if there are overlapping and conflicting lock
2764 requests. The readahead process waits on ungranted lock
2765 (original lock is CBPENDING), while OST waits for that process
2766 to cancel CBPENDING read lock and eventually evicts client.
2768 Severity : enhancement
2770 Description: Initial enabling of flock support for clients
2771 Details : Implements fcntl advisory locking and file status functions.
2772 This feature is provided as an optional mount flag (default
2773 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
2774 locking are implemented yet, and those that are are not guaranteed
2775 to be completely correct in production environments.
2776 mount -t lustre -o [flock|noflock] ...
2779 Frequency : occasional
2781 Description: OSTs running 2.4 kernels but with extents enabled might trip an
2782 assertion in the ext3 JBD (journaling) layer.
2783 Details : The b_committed_data struct is protected by the big kernel lock
2784 in 2.4 kernels, serializing journal_commit_transaction() and
2785 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
2786 access to this struct. In 2.6 kernels there is finer grained
2787 locking to improve SMP performance of the JBD layer.
2791 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
2793 -----------------------------------------------------------------------------
2795 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
2797 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
2798 versions of Lustre. Please update all servers and clients to
2799 version 1.4.2 or later at the same time. You must also run
2800 "lconf --write-conf {config}.xml" on the MDS while it is stopped
2801 to update the configuration logs.
2803 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
2804 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
2805 - swab llog records of type '0' so we get proper header size/idx (5861)
2806 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
2807 - fix rename of one directory over another leaking an inode (5953)
2808 - avoid SetPageDirty on 2.6 (5981)
2809 - don't re-add just-being-destroyed locks to the waiting list (5653)
2810 - when creating new directories, inherit the parent's custom
2811 striping settings if present parent (3048)
2812 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
2813 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
2814 - don't hold client locks on temporary worklist from l_lru (5666)
2815 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
2816 - automatically evict dead clients (5921)
2817 - Update file size properly in create+truncate+fstat case (6196)
2818 - Do not unhash mountpoint dentries, do not allow removal of
2820 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
2821 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
2822 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
2823 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
2824 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
2825 - Correctly handle reads of files with no objects (6243)
2826 - lctl recover will also mark a device active if deactivate used (5933)
2828 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
2829 - allow --write-conf on an MDS with different nettype than client (5619)
2830 - don't write config llogs to MDS for mounts not from that MDS (5617)
2831 - lconf should create multiple TCP connections from a client (5201)
2832 - init scripts are now turned off by default; run chkconfig --on
2833 lustre and chkconfig --on lustrefs to use them
2834 - upcalls are no longer needed for clients to recover to failover
2836 - add --abort-recovery option to lconf to abort recovery on device
2838 - add support for an arbitrary number of OSTs (3026)
2839 - Quota support protocol changes.
2840 - forward compatibility changes to wire structs (6007)
2841 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
2842 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
2843 - improved "lustre status" script
2844 - initialize blocksize for non-regular files (6062)
2845 - added --disable-server and --disable-client configure options (5782)
2846 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
2847 - Vanilla 2.4.29 support
2848 - increase maximum number of obd devices to 520 (6242)
2849 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
2850 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
2851 SLES 9 2.6.5 kernels
2852 - limit stripes per file to 160 (the maximum EA size) (6093)
2854 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
2857 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
2858 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
2859 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
2860 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
2861 - small ext3 extents cleanups and fixes (5733)
2862 - improved mballoc code, several small races and bugs fixed (5733, 5638)
2863 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
2864 - avoid needless client->OST connect, fix handle mismatch (5317)
2865 - fix DLM error path that led to out-of-sync client, long delays (5779)
2866 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
2867 - fix several locking issues related to i_size (5492,5624,5654,5672)
2868 - don't move pending lock onto export if it is already evicted (5683)
2869 - fix kernel oops when creating .foo in unlinked directory (5548)
2870 - fix deadlock in obdfilter statistics vs. object create (5811)
2871 - use time_{before,after} to avoid timer jiffies wrap (5882)
2872 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
2873 - Do not leak request if server was not able to process it (5154)
2874 - If mds_open unable to find parent dir, make that negative lookup(5154)
2875 - don't create new directories with extent-mapping (5909, 5936)
2877 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
2878 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
2879 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
2880 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
2881 - support for RHEL4 kernel on i686 (5773)
2882 - provide error messages when incompatible logs are encountered (5898)
2884 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
2885 * version 1.4.0.10 (1.4.1 release candidate 1)
2887 - don't keep a lock reference when lock is not granted (4238)
2888 - unsafe list practices (rarely) led to infinite eviction loop (4908)
2889 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
2890 - drop import inflight refcount on signal_completed_replay error (5255)
2891 - unlock page after async write error during send (3677)
2892 - handle missing objects in filter_preprw_read properly (5265)
2893 - no transno return for symlink open, don't save no-trasno open (3440)
2894 - don't try to complete elan receive that already failed (4012)
2895 - free RPC server reply state on error (5406)
2896 - clean up thread from ptlrpc_start_thread() on error (5160)
2897 - readahead could read extra page into cache that wasn't ejected (5388)
2898 - prevent races in class_attach/setup/cleanup/detach (5260)
2899 - don't dereference de->d_inode after l_dput of de (5458)
2900 - use "int" for stripe value returned from lock_to_stripe (5544)
2901 - mballoc allocation and error-checking fixes in 2.6 (5504)
2902 - block device patches to fix I/O request sizes in 2.6 (5482)
2903 - look up hostnames for IB nals (5602)
2904 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
2905 - don't start multiple acceptors for the same port (5277)
2906 - fix incorrect LASSERT in mds_getattr_name (5635)
2907 - export a proc file for general "ping" checking (5628)
2908 - fix "lfs check" to not block when the MDS is down (5628)
2910 - service request history (4965)
2911 - put {ll,lov,osc}_async_page structs in a single slab (4699)
2912 - create an "evict_client" /proc entry on OSTs, like the MDS has
2913 - fix mount usage message, return errors per mount(8) (5168)
2914 - change grep [] to grep "[]" in tests so they work in more UMLs
2915 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
2916 - remove ancient LOV_MAGIC_V0 EA support (5047)
2917 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
2918 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
2919 - allow readahead allocations to fail when low on memory (5383)
2920 - mmap locking landed again, after considerable improvement (2828)
2921 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
2923 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
2926 - send OST transaction number in read/write reply to free req (4966)
2927 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
2928 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
2929 - the watchdog thread now runs as interruptible (5246)
2930 - flock/lockf fixes (but it's still disabled, pending 5135)
2931 - don't use EXT3 constants in llite code (5094)
2932 - memory shortage at startup could cause assertion (5176)
2934 - reorganization of lov code
2935 - single portals codebase
2937 - add extents/mballoc support (5025)
2938 - direct I/O reads in the obdfilter (4048)
2939 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
2941 tbd Cluster File Systems, Inc. <info@clusterfs.com>
2944 - send OST transaction number in read/write reply to free req (4966)
2945 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
2946 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
2947 - the watchdog thread now runs as interruptible (5246)
2948 - handle missing objects in filter_preprw_read properly (5265)
2949 - unsafe list practices (rarely) led to infinite eviction loop (4908)
2950 - drop import inflight refcount on signal_completed_replay error (5255)
2951 - unlock page after async write error during send (3677)
2952 - return original error code on reconstructed replies (3761)
2953 - no transno return for symlink open, don't save no-trasno open (3440)
2955 - add pid to ldlm debugging output (4922)
2956 - bump the watchdog timeouts -- we can't handle 30sec yet
2957 - extra debugging for orphan dentry/inode bug (5259)
2959 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
2962 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
2963 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
2964 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
2965 - fix NULL dereference in /proc/sys/portals/routes (4827)
2966 - allow failed mdc_close() operations to be interrupted (4561)
2967 - stop precreate on OST before MDS would time out on it (4778)
2968 - don't send partial-page writes before EOF from client (4410)
2969 - discard client grant for sub-page writes on large-page clients (4520)
2970 - don't free dentries not owned by NFS code, check generation (4806)
2971 - fix lsm leak if mds_create_objects() fails (4801)
2972 - limit debug_daemon file size, always print CERROR messages (4789)
2973 - use transno after validating reply (3892)
2974 - process timed out requests if import state changes (3754)
2975 - update mtime on OST during writes, return in glimpse (4829)
2976 - add mkfsoptions to LDAP (4679)
2977 - use ->max_readahead method instead of zapping global ra (5039)
2978 - don't interrupt __l_wait_event() during strace
2980 - add software watchdogs to catch hung threads quickly (4941)
2981 - make lustrefs init script start after nfs is mounted
2982 - fix CWARN/ERROR duplication (4930)
2983 - return async write errors to application if possible (2248)
2984 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
2985 - print NAL number in %x format (4645)
2986 - update barely-supported suse-2.4.21-171 series (4842)
2987 - support for sles 9 %post scripts
2988 - support for building 2.6 kernel-source packages
2989 - support for sles km_* packages
2991 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
2994 - ignore -ENOENT errors in osc_destroy (3639)
2995 - notify osc create thread that OSC is being cleaned up (4600)
2996 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
2997 - reconstruct ost_handle() like mds_handle() (4657)
2998 - create a new thread to do import eviction to avoid deadlock (3969)
2999 - let lconf resolve symlinked-to devices (4629)
3000 - don't unlink "objects" from directory with default EA (4554)
3001 - hold socknal file ref over connect in case target is down (4394)
3002 - allow more than 32000 subdirectories in a single directory (3244)
3003 - fix blocks count for O_DIRECT writes (3751)
3004 - OST returns ENOSPC from object create when no space left (4539)
3005 - don't send truncate RPC if file size isn't changing (4410)
3006 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
3007 - bind to privileged port in socknal and tcpnal (3689)
3009 - rate limit CERROR/CWARN console message to avoid overload (4519)
3010 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
3011 - basic mmap support (3918)
3012 - kernel patch series update from b1_4 (4711)
3014 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
3017 - avoid crash during MDS cleanup with OST shut down (2775)
3018 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
3019 - don't use bad inodes on the MDS (3744)
3020 - dynamic object preallocation to improve recovery speed (4236)
3021 - don't hold spinlock over lock dumping or change debug flags (4401)
3022 - don't zero obd_dev when it is force cleaned (3651)
3023 - print grants to console if they go negative (4431)
3024 - "lctl deactivate" will stop automatic recovery attempts (3406)
3025 - look for existing locks in ldlm_handle_enqueue() (3764)
3026 - don't resolve lock handle twice in recovery avoiding race (4401)
3027 - revalidate should check working dir is a directory (4134)
3029 - don't always mark "slow" obdfilter messages as errors (4418)
3031 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
3034 - don't close LustreDB during write_conf until it is done (3860)
3035 - fix typo in lconf for_each_profile (3821)
3036 - allow dumping logs from multiple threads at one time (3820)
3037 - don't allow multiple threads in OSC recovery (3812)
3038 - fix debug_size parameters (3864)
3039 - fix mds_postrecov to initialize import for llog ctxt (3121)
3040 - replace config semaphore with spinlock (3306)
3041 - be sure to send a reply for a CANCEL rpc with bad export (3863)
3042 - don't allow enqueue to complete on a destroyed export (3822)
3043 - down write_lock before checking llog header bitmap (3825)
3044 - recover from lock replay timeout (3764)
3045 - up llog sem before sending rpc (3652)
3046 - reduce ns lock hold times when setting kms (3267)
3047 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
3048 - fix NULL deref and obd_dev leak on setup error (3312)
3049 - replace some LBUG about llog ops with error handling (3841)
3050 - don't match INVALID dentries from d_lookup and spin (3784)
3051 - hold dcache_lock while marking dentries INVALID and hashing (4255)
3052 - fix invalid assertion in ptlrpc_set_wait (3880)
3054 - add libwrap support for the TCP acceptor (3996)
3055 - add /proc/sys/portals/routes for non-root route listing (3994)
3056 - allow setting MDS UUID in .xml (2580)
3057 - print the stack of a process that LBUGs (4228)
3059 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
3062 - don't cleanup request in ll_file_open() on failed MDS open (3430)
3063 - make sure to unset replay flag from failed open requests (3440)
3064 - if default stripe count is 0, use OST count for inode size (3636)
3065 - update parent mtime/ctime on client for create/unlink (2611)
3066 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
3067 - free recovery state on server during a forced cleanup (3571)
3068 - unregister_reply for resent reqs (3063)
3069 - loop back devices mounting and status check on 2.6 (3563)
3070 - fix resource-creation race that can provoke i_size == 0 (3513)
3071 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
3072 - more debugging for page-accounting assertion (3746)
3073 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
3074 - avoid deadlock after precreation failure (3758)
3075 - fix race and lock order deadlock in orphan handling (3450, 3750)
3076 - add validity checks when grabbing inodes from l_ast_data (3599)
3078 - add /proc/.../recovery_status to obdfilter (3428)
3079 - lightweight CDEBUG infrastructure, debug daemon (3668)
3080 - change default OSC RPC parameters to be better on small clusters
3081 - turn off OST read cache for files smaller than 32MB
3082 - install man pages and include them in rpms (3100)
3083 - add new init script for (un)mounting lustre filesystems (2593)
3084 - run chkconfig in %post for init scripts (3701)
3085 - drop scimac NAL (unmaintained)
3087 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
3090 - clean kiobufs before and after use (3485)
3091 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
3092 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
3093 - change init script to fail more clearly if not run as root (1528)
3094 - allow clients to reconnect during replay (1742)
3095 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
3096 - don't do DNS lookups on NIDs too small for IP addresses (3442)
3097 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
3098 - fix cond_resched (3554)
3099 - only evict unfinished clients after recovery (3515)
3100 - allow bulk resend, prevent data loss (3570)
3101 - dynamic ptlrpc request buffer allocation (2102)
3102 - don't allow unlinking open directory if it isn't empty (2904)
3103 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
3104 - remove extraneous obd dereference causing LASSERT failure (3334)
3105 - don't use get_cycles() when creating temp. files on the mds (3156)
3106 - hold i_sem when setting i_size in ll_extent_lock() (3564)
3107 - handle EEXIST for set-stripe, set proper directory name (3336)
3109 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
3110 - fix ksocknal_fmb_callback() error messages (2918)
3112 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
3115 - don't copy lvb into (possibly NULL) reply on error (2983)
3116 - don't deref dentry after dput, don't free lvb on error (2922)
3117 - use the kms to determine writeback rpc length (2947)
3118 - increment oti_logcookies when osc is inactive (2948)
3119 - update client's i_blocks count via lvb messages (2543)
3120 - handle intent open/close of special files properly (1557)
3121 - mount MDS with errors=remount-ro, like obdfilter (2009)
3122 - initialize lock handle to avoid ASSERT on error cleanup (3057)
3123 - don't use cancelling-locks' kms values (2947)
3124 - use highest lock extent for kms, not last one (2925)
3125 - don't dereference ERR_PTR() dentry in error handling path (3107)
3126 - fix thread race in portals_debug_dumplog() (3122)
3127 - create lprocfs device entries at setup instead of at attach (1519)
3128 - common AST error handler, don't evict client on completion race (3145)
3129 - zero nameidata in detach_mnt in 2.6 (3118)
3130 - verify d_inode after revalidate_special is valid in 2.6 (3116)
3131 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
3132 - initialize RPC timeout timer earlier for 2.6 (3219)
3133 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
3134 - print nal/nid for unknown nid (3258)
3135 - additional checks for oscc recovery before doing precreate (3284)
3136 - fix ll_extent_lock() error return code for 64-bit systems (3043)
3137 - don't crash in mdc_close for bad permissions on open (3285)
3138 - zero i_rdev for non-device files (3147)
3139 - clear page->private before handing to FS, better assertion (3119)
3140 - tune the read pipeline (3236)
3141 - fix incorrect decref of invalidated dentry (2350)
3142 - provide read-ahead stats and refine rpc in flight stats (3328)
3143 - don't hold journal transaction open across create RPC (3313)
3144 - update atime on MDS at close time (3265)
3145 - close LDAP connection when recovering to avoid server load (3315)
3146 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
3147 - don't leak open file on MDS after open resend (3325)
3148 - serialize filter_precreate and filter_destroy_precreated (3329)
3149 - loop device shouldn't call sync_dev() for nul device (3092)
3150 - clear page cache after eviction (2766)
3151 - resynchronize MDS->OST in background (2824)
3152 - refuse to mount the same filesystem twice on same mountpoint (3394)
3153 - allow llmount to create routes for mounting behind routers (3320)
3154 - push lock cancellation to blocking thread for glimpse ASTs (3409)
3155 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
3156 - fix rare problem with rename on htree directories (3417)
3158 - allow default OST striping configuration per directory (1414)
3159 - fix compilation for qswnal for 2.6 kernels (3125)
3160 - increase maximum number of MDS request buffers for large systems
3161 - change liblustreapi to be useful for external progs like lfsck (3098)
3162 - increase local configuration timeout for slow disks (3353)
3163 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
3165 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3168 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
3169 - don't overwrite extent policy data in reply if lock was blocked (2901)
3170 - drop filter export grants atomically with removal from device (2663)
3171 - del obd_self_export from work_list in class_disconnect_exports (2908)
3172 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
3173 - swab reply message in mdc_close, other PPC fixes (2464)
3174 - fix destroying of named logs (2325)
3175 - overwrite old logs when running lconf --write_conf (2264)
3176 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
3177 - fix race in target_handle_connect (2898)
3178 - mds_reint_create() should take same inode create lock (2926)
3179 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
3180 - don't close files for self_export to avoid uninitialized obd (2936)
3181 - allow MDS with the same name as client node (2939)
3182 - hold dentry reference for closed log files for unlink (2325)
3183 - reserve space for all logs during transactions (2059)
3184 - don't evict page beyond end of stripe extent (2925)
3185 - don't oops on a deleted current working directory (2399)
3186 - handle hard links to targets without a parent properly (2517)
3187 - don't dereference NULL lock when racing during eviction (2867)
3188 - don't grow lock extents when lots of conflicting locks (2919)
3190 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
3193 - account for cache space usage on clients to avoid data loss (974)
3194 - lfsck support in lustre kernel code (2349)
3195 - reduce journal credits needed for BRW writes (2370)
3196 - orphan handling to avoid losing space on client/server crashes
3197 - ptlrpcd can be blocked, stopping ALL progress (2477)
3198 - use lock value blocks to assist in proper KMS, faster stat (1021)
3199 - takes i_sem instead of DLM locks internally on obdfilter (2720)
3200 - recovery for initial connections (2355)
3201 - fixes for mds_cleanup_orphans (1934)
3202 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
3203 - block all file creations until orphan recovery completes (1901)
3204 - client remove rq_connection from request struct (2423)
3205 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
3206 - recovery timer race (2670)
3207 - mdc_close recovey bug (2532)
3208 - ptlrpc cleanup bug (2710)
3209 - mds timeout on local locks (2588)
3210 - namespace lock held during RPCs (2431)
3211 - handle interrupted sync write properly (2503)
3212 - don't try to handle a message that hasn't been replied to (2699)
3213 - client assert failure during cleanup after abort recovery (2701)
3214 - leak mdc device after failed mount (2712)
3215 - ptlrpc_check_set allows timedout requests to complete (2714)
3216 - wait for inflight reqs when ptlrpcd finishes (2710)
3217 - make sure unregistered services are removed from the srv_list
3218 - reset bulk XID's when resending them (caught by 1138 test)
3219 - unregister_bulk after timeout
3220 - fix lconf error (2694)
3221 - handle write after unfinished setstripe, stripe-only getstripe (2388)
3222 - readahead locks pages, leaves pending causing memory pressure (2673)
3223 - increase OST request buffers to 4096 on large machines (2729)
3224 - fix up permission of existing directories in simple_mkdir (2661)
3225 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
3226 - don't assign transno to errored transactions (2742)
3227 - don't delete objects on OST if given a bogus objid from MDS (2751)
3228 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
3229 - if rq_no_resend, then timeout request after recovery (2432)
3230 - fix MDS llog_logid record size, 64-bit array alignment (2733)
3231 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
3232 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
3233 - MDS recovery shouldn't delete objects that it has given out (2730)
3234 - if enqueue arrives after completion, don't clobber LVB (2819)
3235 - don't unlock pages twice when trigger_group_io returns error (2814)
3236 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
3237 - don't write pages to disk if there was an error (1450)
3238 - don't ping imports that have recovery disabled (2676)
3239 - take buffered bytes into account when balancing socknal conn (2817)
3240 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
3241 - reconnect unlink llog connection after MDS reconnects to OST (2816)
3242 - remove little-endian swabbing of llog records (1987)
3243 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
3244 - retry reposting request buffers if they fail (1191)
3245 - grow extent at grant time to avoid granting a revoked lock (2809)
3246 - lock revoke doesn't evict page if covered by a second lock (2765)
3247 - disable VM readahead to avoid reading outside lock extents (2805)
3249 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
3250 - updated kernel patches for hp-2.4.20 kernel (2681)
3252 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
3255 - fix truncated write corruption (2366)
3256 - fix for failed assertion in iopen_connect_dentry (1792,2517)
3258 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
3259 - ensure len(uuid) < 37 in lmc (1171)
3260 - fix ia64 OOPS in llog_test (2255)
3261 - zero end of page at obdfilter for partial page writes (2648)
3262 - don't leave stale dentries around after renames (bug 2428)
3263 - fix timeouts when evicting a client with a single lock held (2642)
3264 - set deadline for the initial HELLO message to drain (2634)
3265 - print out dotted-quad IP addresses in the socknal (2302)
3267 - additional debugging for MDS client eviction problem (2443)
3268 - fix mkfsoptions support for osts (2603, 2604)
3270 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
3273 - add series for the vanilla 2.6.0 kernel
3274 - add series for the vanilla 2.4.24 kernel
3275 - add series for a cray x86/64 UL kernel drop
3276 - fix xattr patches for the vanilla 2.4.19 series
3278 - generate true UUIDs in lmc (1171)
3279 - have portals stack dumping break in UML (2466)
3280 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
3281 - allocate with _NOFS in ldlm to avoid deadlock (1933)
3282 - wake callback waiting threads on client eviction (2460)
3283 - Add --ptldebug and --subsystem to lmc (1719)
3284 - update assertion to allow safe interrupt allocation
3285 - set rq_no_resend for cancel requests (2432)
3286 - recalculate ptlrpcd timeout after resend (2494)
3287 - call vfs_rmdir when removing pending directories (2368)
3288 - fix renaming a file to itself (2429)
3289 - lmc creates a default one-stripe lov (2454)
3290 - expand procfs space to handle large clusters (2326)
3291 - increase UML stack to avoid overflow
3292 - update lconf's list of debug and subsystem masks
3293 - fix lfs find --obd (2510)
3294 - /proc tunable for disabling filter read caching (2591)
3295 - stop rpm packages from altering slapd.conf (2301)
3296 - disable nagle in the socknal under 0conf (2578)
3297 - choose mds inode size based on stripe count (2572)
3298 - fix kernel-source rpm problems (2516)
3300 - add --disable-doc to avoid pdf generation (2421)
3301 - update documentation, tests, type-os, comments
3302 - avoid format warnings on ia64
3303 - remove the TOE NAL
3304 - tiny code cleanups by removing unused fields
3306 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
3309 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
3310 - remove the most blatant lies from BUILDING file (2371)
3311 - change default debug level to reasonable production setting
3312 - reduce client side cache size to reduce cache flush time
3313 - reduce max RPCs in flight to avoid unnecessary file fragmentation
3314 - make TCP zerocopy and pinger support enabled by default (2476)
3315 - sync writes completed after process exits caused crashes (2319)
3316 - maintain correct mount count on the MDS (2356)
3317 - backout 1557, because 2316 wasn't really fixed
3318 - better file I/O statistics gathering in /proc
3319 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
3320 - another kernel patch to fix zero-copy TCP function export
3321 - don't take duplicate lock when processing re-sent getattr (2420)
3322 - lctl uses obd_self_export instead of creating new conn (2353)
3323 - MDS/OST recovery case which requires object creation asserted (2425)
3324 - move lfs from /usr/sbin to /usr/bin in packages
3325 - fix race between mds_client_add and mds_client_free (2417)
3326 - use kmalloc instead of slabs in portals (2430)
3327 - don't create duplicate records when a failover MDS is present (2442)
3328 - remove unnecessary mount age check (2332)
3329 - don't remove directory inodes from locks prematurely (2451)
3330 - don't break if MDS service name is the same as hostname (2103)
3331 - fix races in client write RPC generation when cache full (2482)
3333 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
3336 - remove now-unused request->rq_obd (278)
3337 - if an allocation fails, print out how much memory we've used (1933)
3338 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
3339 - add the "configurable stack size" patch to most series files (1256)
3340 - ability to write large log records, for 100+ OST configs (2306)
3341 - fix NULL deref when filter_prep fails (2314)
3342 - fix operator precedence error in filter_sync
3343 - dynamic allocation of socknal TX descriptors (2315)
3344 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
3345 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
3346 - ensure that CWARN messages in Portals always get to the syslog
3347 - __init/__exit are not for prototype decls (ldlm_init/exit)
3348 - x86-64 compile warning fixes
3349 - fix gateway LMC keyword conflict (2318)
3350 - fix MDS lock inversions in getattr/reint paths (1844)
3351 - fix a rare lock re-ordering bug, which caused deadlock (2322)
3352 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
3353 - DLM race condition prevented some lock evictions (2328)
3354 - ENOMEM detection and retry on socknal sends (2230)
3355 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
3356 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
3357 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
3358 - better error messages when a client is rejected during recovery (1505)
3359 - avoid cancelling locks which were never granted, after failure (2330)
3360 - fix i_sem/journal inversion in mds_client_add (2333)
3361 - fix truncate/getattr lock cycle deadlock (2334)
3362 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
3363 - fix two rare exit paths which could leak an l_lock() ref (2321)
3364 - fencepost error in MDS/OST orphan recovery (2226)
3365 - make log record alignment 8 bytes (1988)
3366 - lstripe now fails when requested offset > ost_count (2237)
3367 - ensure that all kernel series have a complete list.h (1607)
3368 - fix crashes in special-file operations (2316)
3369 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
3371 - allow configurable automake binary, for testing new versions
3372 - small update to the lfs documentation
3374 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
3376 * fix negative export reference count in fsfilt_sync (2312)
3378 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
3379 * release candidate 0.9.1
3381 - orphans are moved into the PENDING directory for possible recovery
3382 - replayed opens now open by fid for orphan/rename safety (1042)
3383 - last close of an orphan inode generates a transno (683)
3384 - chdir() and mount() now pin the directory entry (1020)
3385 - avoid CERROR in normal ll_setattr_raw() error case (1500)
3386 - discard very old requests without processing them (1502)
3387 - remove some common, well-understood CERRORs (1505)
3388 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
3389 - clear "grant" flags in OST replies until OST grant code lands (1644)
3390 - fix read performance by not clobbering i_blksize on client (1598)
3391 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
3392 - make LRU size a /proc tunable, clears locks when reduced (707)
3393 - fix some lprocfs rot that prevented ptlbd from loading (1732)
3394 - server locks take references on exports now (1558)
3395 - build fixes for 2.4.20-rh trees (1663)
3396 - return an error from lov_create if all OSCs are inactive (1751)
3397 - fix import levels when a reconnect happens without a timeout (1597)
3398 - exit early from mds_open if we get a lookup error (1749)
3399 - partial page read at EOF wouldn't wait for disk before sending (1642)
3400 - avoid NULL deref in obdfilter when reading page past EOF (1592)
3401 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
3402 - fix LBUG in ll_it_open_error with rc = -2 (1861)
3403 - write/truncate lock inversion (1639)
3404 - Don't auto-load obdclass, portals modules during cleanup (1495)
3405 - fix timestamps from jumping to "now" (1763)
3406 - extra journal assertions (1648)
3407 - add an extra multiunlink test (1771)
3408 - fix read_record/write_record API (1776)
3409 - fix leak of offset_extent, possible incorrect i_size later (1772)
3410 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
3411 - Debugging for the kqswnal_get_idle_tx problems (1820)
3412 - Allow recovery to be attempted multiple times (1536)
3413 - Write out MDS last_rcvd file after it is first created (1600)
3414 - Fix tx_descriptor leak in failed transmit situations (1827)
3415 - ext3 journaling fixes for assertion failure after IO error (1871)
3416 - class_export_put() on freed export after completion AST error (1896)
3417 - Fix revalidate looping in VFS (1322)
3418 - Don't access a freed export during MDS_REINT timeout (1521)
3419 - Add open-unlink recovery support on the MDS (1673,1764)
3420 - Return an error if no MDS data was read from last_rcvd (1946)
3421 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
3422 - Don't setup a disk device that doesn't match exported UUID (317)
3423 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
3424 - avoid committing NULL handle in force close
3425 - local.sh is now a one-stripe LOV configuration
3426 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
3427 - fix ext3 htree duplicate directory entry corruption (1516)
3428 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
3429 - update to new LOV EA format (2097)
3430 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
3432 2003-06-15 Phil Schwan <phil@clusterfs.com>
3435 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
3436 - per-import/export recovery handling (958, 931, 959)
3437 - multiple last-rcvd slots, for serving multiple FSes (949)
3438 - connections are again shared between multiple imp/exports (963, 964)
3439 - "umount -f" would hang if any requests needed to be sent (393, 978)
3440 - avoid pinning large req buffer by copying for queued messages (989)
3441 - add "uuid" to "lctl device" command to help upcalls (991)
3442 - "open" RPCs with transnos would confuse recovery counters (1037)
3443 - do proper endian conversion of all wire messages (288, 340, 891)
3444 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
3445 - call waiting locks callback from LDLM recovery thread (1127, 1151)
3446 - fix ptlrpc_connection leak in target_handle_connect (1174)
3447 - fix import refcounting bug in OST and MDS cleanup (1134)
3448 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
3449 - fix very unlikely obd_types race condition (501)
3450 - remove osc_open hack for echo_client (1187)
3451 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
3452 - a failure in read_inode2 leads to deadlock (1139)
3453 - cancel ack-locks as soon as transaction is committed (1072)
3454 - fix major leaks and crashes in the bulk I/O path (937, 1057)
3455 - make sure to commitrw after any preprw to avoid deadlock (1162)
3456 - failing to execute a file in a lustre FS would lock inode (1203)
3457 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
3458 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
3459 - obd_uuid2tgt would walk off the end of the list (1255)
3460 - on IA64 the osc would give portals incorrect bulk size (1258)
3461 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
3462 - fix lock inversion caused by new llite matching code (1282)
3463 - limit the number of dirty pages on a client to 10MB (1286)
3464 - timed out locks were not being corrected cancelled (1289)
3465 - fix O_DIRECT above 4GB on IA-32 (1292)
3466 * major user-visible changes
3467 - fail out/fail over policy now controlled by the upcall (993)
3469 - add OBD_PING to check server availability and failure (954)
3470 - lustre messages are now sent in sending host order (288, 340, 891)
3471 - add eadatalen to MDS getattr reply (340)
3472 - OST read replies may contain second buffer, with per-page status (593)
3474 2003-03-11 Phil Schwan <phil@clusterfs.com>
3477 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
3478 - failed open()s could cause deadlock; fixed (867, 869)
3479 - stop cancelling OST locks when files are closed (481)
3480 - overlapping XID spaces caused network corruption (851, 853)
3481 - fix unsafe fsfilt counter arithmetic; change to atomic_t
3482 - setattr_raw added, to do single-RPC, server-side setattrs
3483 - lmc/lconf syntax change for OST UUIDs
3484 - fix crashy race condition between ptlrpc_free_req and osc_close
3485 - don't use request in mdc_enqueue if we hit a timeout (889)
3486 - don't set the inode i_size for regular files from the MDS (896)
3487 - handle out of order completion AST (842)
3488 - don't LBUG if a lock request times out after receiving AST (913)
3489 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
3490 - if a bad lock AST arrives, send an error instead of dropping entirely
3491 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
3492 - fix leak in bulk IO when only partially completed (899, 900, 926)
3493 - fix O_DIRECT for ia64 (55)
3494 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
3495 - C-z after timeout could hang a process forever; fixed (977)
3497 - client-side I/O cache (678, 924, 929, 941, 970)
3499 - READPAGE and SETATTRs which don't take server-side locks get
3502 2003-02-11 Phil Schwan <phil@clusterfs.com>
3505 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
3506 - Fix fsfilt_extN_readpage() to read a full page of directory
3507 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
3508 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
3509 - Fix imbalanced LOV object allocation and out-of-bound access (469)
3510 - Most intent operations were removed, in favour of a new RPC mode
3511 that does a single RPC to the server and bypasses most of the VFS
3512 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
3513 - Aggressively cancel local locks on DLM servers
3514 - mds_reint_unlink sends EA to the client if it's the last nlink.
3515 client uses that EA to unlink OST objects.
3516 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
3517 - recursive symlinks were fixed (439)
3518 - fixed NULL deref in DEBUG_REQ
3519 - filter_update_lastobjid no longer calls sync, which annoyed extN
3520 - fixed multi-client small-writes to a single file problem (445)
3521 - fixed mtime updates during file writes (607)
3522 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
3523 - fixed bug in obd_brw_read/write() (under guise of testing 367)
3524 - fixed Linux OST size reporting problem (444, 656)
3525 - OST now updates object mtime with writes or setattr (607, 619)
3526 - client verifies file size before zeroing page past EOF (445)
3527 - OST now writes last allocated objid to disk with allocation (108)
3528 - LOV on echo now works (409)
3530 - mds_reint_unlink sends a new buffer, with the EA included. this
3531 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
3532 set if a regular file was being unlinked, and it was the last link
3533 - use PtlGet from the target for bulk writes (315)
3534 - OST now updates object mtime with writes or setattr (607, 619)
3535 - LDLM now has a grant-time callback to revalidate locked items, if
3537 - Many MDS operations were reorganized to combat race conditions
3539 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
3540 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
3542 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
3545 - Fully reactivate OST imports after reconnection (512, others)
3546 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
3547 - More graceful error handling for truncating on dead OST (515)
3548 - Don't error out unless we're actually accessing dead stripes (474)
3549 - Fix garbage sizes when stripes are missing (410)
3550 - LRU counters were broken, causing constant lock purge (433, 432)
3551 - garbage on read from stripes with failed OSTs (441)
3552 - mark OSCs as active before reconnecting during recovery (438)
3553 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
3554 - lfind did not preserve OST order in output (443)
3555 - symlinks cause hung clients, incorrect data (439)
3556 - stop dereferencing request after dropping refcount (457)
3557 - don't LASSERT(spin_is_locked) on non-SMP (455)
3558 - fixes for many rename() bugs
3559 - fstat didn't correctly synchronize attributes (399)
3560 - server must handle lock cancellation during blocking AST prep (487)
3561 - bulk descriptors were free()d too soon (511)
3562 - fix paths in lconf, which would load incorrect modules (451, 507)
3563 - fix confusing lconf 'host not found' error message (386)
3564 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
3565 - fix race condition in mdc_blocking_ast() for inode access (526)
3566 - fix lov_unpackmd() unpacking wrong number of stripes (537)
3567 - fix lov_set_osc_active() marking wrong OSC inactive (440)
3568 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
3569 - fix multiple writes of stripe MD to MDS (358, maybe 519)
3570 - fix lstripe in several ways (kernel side) (527)
3571 - fix request leak in ldlm_cli_enqueue (262)
3572 - incorrect OSC was marked inactive after OST failure
3573 - call mds_fs_cleanup before unmounting filesystem (524)
3574 - fix races between taking ns_lock and ldlm_lock_change_resource
3575 - fix races updating LOV export open file list
3576 - fix lov_enqueue error path, avoid decref-ing bad lock handle
3577 - fix recovery NULL deref in ldlm_cli_cancel_unused
3578 - fix some DLM races by using new hash table for lock handles (419)
3579 - permit the client to specify desired inodes, at replay
3580 - duplicate requests when we queue them for replay reintegration
3581 - fix last_rcvd offset calculation
3582 - sync after each recovered transaction, so we always make progress
3583 - never, not always, ERESTART requests without transnos
3584 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
3586 - skip replay if the MDS says that the client is already connected
3587 - don't check for a recovery-enabled export to match lctl's UUID
3588 - don't INC_USE_COUNT for phantom exports
3589 - don't crash when cleaning up phantom exports (567)
3590 - don't double-finish or set replay data for errored mdc_open requests
3591 - abort requests when they time out, so we don't get old replies
3592 - send/receive replies for AST messages again
3593 - if the client says that it doesn't have the lock, cancel it on the
3595 - if we timeout during I/O, don't try to cancel an in-use lock; instead
3596 mark it as destroyed, it will all work out when decref is called
3597 - fix module use counts (22, 581)
3599 - ASTs now expect a reply (server cancels lock on error reply)
3601 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
3604 - fix many simultaneous client startup (392)
3605 - fix dentry->d_it clobbering
3606 - credentials weren't being shipped for readdir/getattr operations
3607 - remove invalid assertions triggered during some concurrent MD
3609 - proper Lustre versions added (336, 389)
3610 - fix memory leak for create error case (398)
3611 - fix LOV locking bug that would get cli/srv out of sync
3612 - fix echo client over LOV (409)
3613 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
3614 - fix double-O_EXCL intent crash (424)
3615 - avoid sending multiple lock CANCELs (352)
3617 - MDS can do multi-client recovery (modulo bugs in new code)
3619 - many updates, edits, cleanups
3621 2002-11-18 Phil Schwan <phil@clusterfs.com>
3624 - fix null d_it dereference (346)
3625 - fix full OST/dbench hang (333)
3626 - fix permission problem with file removal (286)
3627 - fix removal of OSCs from LOV when they fail
3628 - fix NULL deref during bulk timeout (214)
3629 - fix problems related to multiple filesystems on one MDS (241)
3630 - fixed serious subtle metadata locking bugs
3631 - free locks on clients when inodes are removed due to memory
3633 - fix inode pointer in lock data (285)
3634 - partial support for multiple MDS on a single host (241)
3635 - data locks weren't cancelled at clear_inode time (290, 311)
3636 - intent locks could lead to unbounded lock growth (205)
3637 - added a maximum lock count, an LRU list, and a flusher
3638 - fix multiple rename (365)
3639 - properly abstracted the echo client
3640 - OSC locked 1 byte too many; fixed
3641 - rewrote brw callback code:
3642 - fixed recovery bugs related to LOVs (306)
3643 - fixed too-many-pages-in-one-write crash (191)
3644 - fixed (again) crash in sync_io_timeout (214)
3645 - probably fixed callback-related race (385)
3647 - Add capability to MDS protocol
3648 - LDLM cancellations and callbacks on different portals
3650 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3653 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3654 - defer open object destruction to close time (601981, 138)
3655 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3656 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3657 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3658 - don't call obd_setattr in ll_file_release for destroyed objects
3659 * protocol change to lustre_msg: move |version| and add |flags|
3660 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3661 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3662 * added replay of create, unlink, link and rename operations during
3663 MDS failover; recovery should be much more robust now
3664 * remove failed OSCs from LOVs (only lov_create uses this so far)
3665 * the lustre-HOWTO was brought (more) up to date (582544)
3667 2002-10-23 Phil Schwan <phil@clusterfs.com>
3670 - in-use dentries weren't being reused properly (617851)
3671 - prevent multiple LDLM setup (599178)
3672 - fix LOV size calculations for truncate (617853)
3673 - fix client handling of MDS intent errors (POSIX)
3674 - fix permission bug in lovstripe.c test (624321)
3675 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3676 - truncate past end of file could corrupt data
3677 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3678 - a race in recovery could return ETIMEDOUT to apps (623947)
3679 - building outside the source directory was fixed
3680 * the lustre-HOWTO was brought (more) up to date (582544)
3681 * major progress was made on recovery functionality
3683 2002-10-10 Phil Schwan <phil@clusterfs.com>
3686 - recovery deadlock fix
3687 - rm -rf causes LBUG fix (617817)
3688 - file open by multiple tasks fix (618962)
3689 - directory permissions bugs (602707 and 620007)
3690 - journal_stop fixed with locking (611313)
3691 - O_APPEND failures resolved (618273, perhaps 614459)
3692 - lconf PATH fix (619770)
3693 - IA64 build fix (621450)
3694 - RPC buffer sizes scale with amount of memory
3696 2002-10-01 Phil Schwan <phil@clusterfs.com>
3699 - locks would be cancelled without throwing away data pages,
3700 resulting in inconsistent data (605627)
3701 - inode attributes were not always being refreshed (605627, 612449)
3702 - lconf now continues to cleanup after lctl reports an error
3703 - MDS now enforces user permissions (602707)
3704 - lprocfs cleanup fixed, but not yet enabled (614157)
3705 - fixed infinite server hang, should a client not respond to an AST
3706 - avoid going into recovery if user calls readlink() with a buffer
3707 that's too small (613941)
3708 - AST RPCs no longer require replies (614867) -- this may be changed
3709 - don't crash server if client sends an IOV that's too big (611336)
3710 - fixed lock conversion deadlock (611892)
3711 - fixed the following of symlinks (614622)
3712 * recovery: the server can remove locks from a client that dies, other
3713 clients can make progress
3714 * more extN patch fixes
3715 * compile-time configurable ptlrpc buffer allocations
3717 - collaborative read cache document
3718 - Lustre Lite Performance CDR document-in-progress
3720 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3723 - fix typo in patch-2.4.18
3725 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3728 - clear ptlrpc request each time in handle_incoming_request()
3729 - unlink of files now destroys the object on the OST
3731 2002-09-19 Peter Braam <braam@clusterfs.com>
3733 * add hard link support
3734 * change obdfile creation method
3735 * kernel patch changed
3737 2002-09-19 Peter Braam <braam@clusterfs.com>
3740 - stack overflow bug in extN fixed
3742 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
3744 * documentation updates
3745 - add man pages for config tools
3746 - update tests/README to describe testing with new config tools
3747 - finish metadata API descriptions
3748 * bug fixes and cleanups
3749 - statfs workaround for 16TB limit
3750 - LOV stripe allocation improved, can stripe on subset of OSTs
3751 - LOV file size/IO offset was wrong for files > 4GB in size
3752 - object EA data was being dropped, caused files to be unreadable
3753 - memory overflow with non-LOV OST caused memory corruption
3754 - fixed regression tests to work with new config tools, obdfilter
3755 - fixed bug when directory size became larger than 1 block
3756 - fixed bug (for single client case) when PWD was deleted
3757 - invalidate local directory pages when doing intent-based ops
3758 - avoid LDLM oops when lock callback contained bad data
3760 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
3762 * documentation updates
3763 * bug fixes and cleanups
3764 - configuration tools
3767 - 64-bit compile warnings
3768 - 64-bit internal statfs data
3770 * test_brw on persistent OST devices
3772 * lprocfs (disabled)
3774 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
3776 * documentation updates
3777 * bug fixes and cleanups
3778 * configuration tools
3780 2002-08-30 Peter J. Braam <braam@clusterfs.com>
3783 * many small fixes to 0_5_4
3784 * io/network handling
3785 * thinkos in MDS operations
3787 2002-08-24 Peter J. Braam <braam@clusterfs.com>
3790 * crucial basic fixes to 0.5.3
3791 * IOR, Iozone work over Elan
3794 2002-08-07 Phil Schwan <phil@clusterfs.com>
3795 * version 0_5_3, our first alpha
3796 * we use the new Portals iovs
3797 * documentation updates
3798 * bug fixes and cleanups
3799 * small changes in the DLM wire protocol
3801 2002-07-25 Peter J. Braam <braam@clusterfs.com>
3802 * version 0_5_1 with some initial stability,
3803 * locking on MD and file I/O.
3804 * documentation updates
3805 * several bug fixes since 0.5.0
3806 * small changes in wire protocol
3808 2002-07-18 Phil Schwan <phil@clusterfs.com>
3810 * delivered as Lustre Light Alpha
3811 * fixed a crash after handling invalid MDS requests
3812 * fixed directory pages for architectures with non-4k pages sizes
3814 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
3815 * release version v0_4_4
3816 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
3818 * Fixes a number of interruption problems with OST operations.
3819 * Update documentation for portals header changes
3820 * Move all wire protocol structs/defines to lustre_idl.h
3821 * Fixes symlink length bug.
3822 * Add tcpdump to repository.
3824 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
3825 * release version v0_4_3
3826 * Fixes statfs for inodes on extN.
3827 * Fixes bug in runtests which would delete /etc/hosts.
3828 * Use 64-bit object IDs wherever possible (not into VFS though)
3829 Remove ost_get_info, which is unused by lustre, and out of date.
3831 2002-07-03 Peter Braam <braam@clusterfs.com>
3832 * release version v0_4_2 Fixes a lookup error (type not passed)
3833 * move forward to head of Portals
3834 * move forward to latest Lustre kernel
3836 2002-06-25 Peter Braam <braam@clusterfs.com>
3837 * release version v0_4_1. Hopefully stable on single node use.