1 tbd Cluster File Systems, Inc. <info@clusterfs.com>
6 2.6.16.46-0.14 (SLES 10),
7 2.6.18-8.1.8.EL5 (RHEL 5).
8 2.6.18.8 vanilla (kernel.org)
9 * Client support for unpatched kernels:
10 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
11 2.6.9-42.0.10.EL (RHEL 4),
12 2.6.16 - 2.6.21 vanilla (kernel.org)
13 * Recommended e2fsprogs version: 1.40.2-cfs1
14 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
18 Description: don't use GFP_* in generic Lustre code.
19 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
23 Description: obdclass is limited by single OBD_ALLOC(idarray)
24 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
28 Description: warnings with build patchless client with vanila 2.6.19 and up
29 Details : change old ctl_table style and replace ctl_table/ctl_table_header
30 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
34 Frequency : Only for SLES
35 Description: sanity_quota fail test_1
36 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
37 file, which makes TSTID[2] inunique.
41 Frequency : Only for SLES9
42 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
43 Details : Update target/ChangeLog/which_patch .
47 Frequency : Only for test_10 in sanity-quota.sh
48 Description: a bug in quota test code
49 Details : checking a test flag in a wrong place
53 Frequency : Only for test_13 in sanity-quota.sh
54 Description: a bug in quota test script
55 Details : shouldn't check overfull allocated quota
59 Description: jbd statistics
60 Details : Port older jbd statistics patch for sles10
62 Severity : enhancement
64 Description: Add printing inode info into message about error in writepage.
69 Description: reply_lock_interpret crash due to race with it and lock cancel.
70 Details : Do not replay locks that are being cancelled. Do not reference
71 locks by their address during replay, just by their handle.
75 Frequency : When flocks are used.
76 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
77 Details : Flock locks might destroy just granted lock if it could be merged
78 with another existing flock, this is done in completion handler,
79 so teach ldlm_cli_enquque_fini that this is a valid case for
85 Description: Oops in read and write path when failing to allocate lock.
86 Details : Check if lock allocation failed and return error back.
90 Description: lstripe command fails for valid OST index
91 Details : The stripe offset is compared to lov->desc.ld_tgt_count
92 instead of lov->desc.ld_active_tgt_count.
96 Description: sanity.sh failed test 103
97 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
102 Description: df doesn't work properly if diskfs blocksize != 4K
103 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
107 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
108 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
112 Description: obd_health_check_timeout too short
113 Details : set obd_health_check_timeout as 1.5x of obd_timeout
117 Description: llapi_file_create() does not allow some changes
118 Details : add llapi_file_open() that allows specifying the mode and
119 open flags, and also returns an open file handle.
123 Description: merge and cleanup kernel patches.
124 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
128 Description: Add journal checksum support.(Kernel part)
129 Details : The journal checksum feature adds two new flags i.e
130 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
131 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
132 indicates that the commit block contains the checksum for
133 the blocks described by the descriptor blocks. Now commit
134 record can be sent to disk without waiting for descriptor
135 blocks to be written to disk. This behavior is controlled
136 using JBD2_FEATURE_ASYNC_COMMIT flag.
140 Description: OSS needs mutliple precreate threads
141 Details : Add ability to start more than one create thread per OSS.
145 Description: Sanity.sh test_65k failed: setstripe should have succeeded
146 Details : execute lfs setstripe on client
150 Description: mds_obd_create error creating tmp object
151 Details : When the user sets quota on root, llog will be affected and can't
152 create files and write files.
155 Frequency : Always on ia64 patchless client, and possibly others.
157 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
158 Details : This allows the patchless client to be loaded on architectures
163 Description: RedHat Update kernel for RHEL5
164 Details : Add the kernel config file for RHEL5.
168 Description: RedHat Update kernel for RHEL5
169 Details : Modify the kernel config file more closer RHEL5.
171 --------------------------------------------------------------------------------
173 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
175 * Support for kernels:
176 2.6.5-7.283 (SLES 9),
177 2.6.9-55.EL (RHEL 4),
178 2.6.16.46-0.14 (SLES 10),
179 2.6.18.8 vanilla (kernel.org)
180 * Client support for unpatched kernels:
181 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
182 2.6.16 - 2.6.22 vanilla (kernel.org)
183 * Due to recently discovered recovery problems, we do not recommend
184 using patchless RHEL 4 clients with this or any earlier release.
185 * Recommended e2fsprogs version: 1.39.cfs8
186 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
187 * Starting with this release, the ldiskfs backing filesystem required
188 by Lustre is now in its own package, lustre-ldiskfs. This package
189 should be installed. It is versioned separately from Lustre and
190 may be released separately in future.
194 Description: block reactivating mgc import until all deactivates complete
195 Details : Fix race when failing back MDT/MGS to itself (testing)
197 Severity : enhancement
199 Description: add optional extra BUILD_VERSION info
200 Details : add a new environment variable (namely LUSTRE_VERS) which allows
201 to override the lustre version.
204 Frequency : 2.6.18 servers only
206 Description: ll_kern_mount() doesn't release the module reference
207 Details : The ldiskfs module reference count never drops down to 0
208 because ll_kern_mount() doesn't release the module reference.
213 Description: server LBUG when using old ost_num_threads parameter
214 Details : Accept the old ost_num_threads parameter but warn that it
215 is deprecated, and fix an off-by-one error that caused an LBUG.
220 Description: Transient SCSI error results in persistent IO issue
221 Details : iobuf->dr_error is not reinitialized to 0 between two
225 Frequency : sometimes when underlying device returns I/O errors
227 Description: OSTs not going read-only during write failures
228 Details : OSTs are not remounted read-only when the journal commit threads
229 get I/O errors because fsfilt_ext3 calls journal_start/stop()
230 instead of the ext3 wrappers.
234 Description: poor connect scaling with increasing client count
235 Details : Don't run filter_grant_sanity_check for more than 100 exports
236 to improve scaling for large numbers of clients.
239 Frequency : SLES10 only
241 Description: sanity-quota.sh quotacheck failed: rc = -22
242 Details : Quotas cannot be enabled on SLES10.
245 Frequency : liblustre clients only
247 Description: getdirentries does not give error when run on compute nodes
248 Details : getdirentries does not fail when the size specified as an argument
249 is too small to contain at least one entry
251 Severity : enhancement
253 Description: Add LNET router traceability for debug purposes
254 Details : If a checksum failure occurs with a router as part of the
255 IO path, the NID of the last router that forwarded the bulk data
256 is printed so it can be identified.
261 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
262 Details : Due to a race condition, liblustre clients were occasionally
265 Severity : enhancement
267 Description: lfs setstripe use optional parameters instead of postional
270 Severity : enhancement
272 Description: Nanosecond timestamp support for ldiskfs
273 Details : The on-disk ldiskfs filesystem has added support for nanosecond
274 resolution timestamps. There is not yet support for this at
275 the Lustre filesystem level.
278 Frequency : during server recovery
280 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
281 Details : request with rq_no_resend flag not awake l_wait_event if they get a
285 Frequency : nfs export on patchless client
287 Description: connectathon hang when test nfs export over patchless client
288 Details : Disconnected dentry cannot be found with lookup, so we do not need
289 to unhash it or make it invalid
292 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
293 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
294 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
299 Description: open req refcounting wrong on reconnect
300 Details : If reconnect happened between getting open reply from server and
301 call to mdc_set_replay_data in ll_file_open, we will schedule
302 replay for unreferenced request that we are about to free.
303 Subsequent close will crash in variety of ways.
304 Check that request is still eligible for replay in
305 mdc_set_replay_data().
310 Description: disable writes to filesystem when reading health_check file
311 Details : the default for reading the health_check proc file has changed
312 to NOT do a journal transaction and write to disk, because this
313 can cause reads of the /proc file to hang and block HA state
314 checking on a healthy but otherwise heavily loaded system. It
315 is possible to return to the previous behaviour during configure
316 with --enable-health-write.
318 Severity : enhancement
320 Description: 64-bit inode version
321 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
322 to the inode. This will be required for version-based recovery.
327 Description: MDS fails to start if a duplicate client export is detected
328 Details : in some rare cases it was possible for a client to connect to
329 an MDS multiple times. Upon recovery the MDS would detect this
330 and fail during startup. Handle this more gracefully.
332 Severity : enhancement
334 Description: Add -o localflock option to simulate old noflock
336 Details : This will achieve local-only flock/fcntl locks
342 Description: log_commit_thread vs filter_destroy race leads to crash
343 Details : Take import reference before releasing llog record semaphore
348 Description: Wrong request locking in request set processing
349 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
350 imp_delayed_list, in this place should be used imp_lock.
353 Frequency : when reconnection
355 Description: Grant Leak when osc reconnect to OST
356 Details : When osc reconnect ost, OST(filter) should check whether it
357 should grant more space to client by comparing fed_grant and
358 cl_avail_grant, and return the granted space to client instead
359 of "new granted" space, because client will call osc_init_grant
360 to update the client grant space info.
363 Frequency : when client reconnect to OST
365 Description: Grant Leak when osc do resend and replay bulk write
366 Details : When osc reconnect to OST, OST(filter)should clear grant info of
367 bulk write request, because the grant info while be sync between
368 OSC and OST when reconnect, and we should ignore the grant info
369 these of resend/replay write req.
374 Description: Grant space more than avaiable left space sometimes.
375 Details : When then OST is about to be full, if two bulk writing from
376 different clients came to OST. Accord the avaliable space of the
377 OST, the first req should be permitted, and the second one
378 should be denied by ENOSPC. But if the seconde arrived before
379 the first one is commited. The OST might wrongly permit second
380 writing, which will cause grant space > avaiable space.
383 Frequency : when client is evicted
385 Description: Grant might be wrongly erased when osc is evicted by OST
386 Details : when the import is evicted by server, it will fork another
387 thread ptlrpc_invalidate_import_thread to invalidate the
388 import, where the grant will be set to 0. While the original
389 thread will update the grant it got when connecting. So if
390 the former happened latter, the grant will be wrongly errased
391 because of this race.
396 Description: Checking Stale with correct fid
397 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
398 to check whether it is stale, because sometimes, we want the
399 enqueue happened anyway, and op_data.fid2 will not be initialized.
401 Severity : enhancement
403 Description: update patchless client
404 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
407 Frequency : only with 2.4 kernel
409 Description: random memory corruption
410 Details : size of struct ll_inode_info is to big for union inode.u and this
411 can be cause of random memory corruption.
416 Description: Memory leak in recovery
417 Details : Lov_mds_md was not free in an error handler in mds_create_object.
418 It should also check obd_fail before fsfilt_start, otherwise if
419 fsfilt_start return -EROFS,(failover mds during mds recovery).
420 then the req will return with repmsg->transno = 0 and rc = EROFS.
421 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
422 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
423 be freed no matter whether fsfilt_commit success or not.
426 Frequency : only with huge count clients
428 Description: Prevents from taking the superblock lock in llap_from_page for
430 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
431 for llap_from_page call in ll_removepage prevents from taking the
432 superblock lock for a soon died page.
437 Description: Not check open intent error before release open handle
438 Details : in some rare cases, the open intent error is not checked before
439 release open handle, which may cause
440 ASSERTION(open_req->rq_transno != 0), because it tries to release
441 the failed open handle.
446 Description: Set cat log bitmap only after create log success.
447 Details : in some rare cases, the cat log bitmap is set too early. and it
448 should be set only after create log success.
452 Description: Accessing a block bevice can re-enable I/O when Lustre is
453 tearing down a device.
454 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
459 Description: service threads may hog cpus when there are a lot of requests
461 Details : Insert cond_resched to give other threads a chance to use some of
467 Description: the cat log was not initialized in recovery
468 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
469 unlink log on mds will not be initialized until mds post
470 recovery. And also in mds post recovery, the unlink log will
471 initialization will be done asynchronausly, so there will be race
472 between add unlink log and unlink log initialization.
476 Description: brw_stats were being printed incorrectly
477 Details : brw_stats were being printed as log2 but all of them were not
478 recorded as log2. Also remove some code duplication arising from
479 filter_tally_{read,write}.
483 Frequency : rare, only in recovery.
484 Description: ASSERTION(req->rq_type != LI_POISON) failed
485 Details : imp_lock should be held while iterating over imp_sending_list for
486 prevent destroy request after get timeout in ptlrpc_queue_wait.
490 Description: replay-single.sh test 52 fails
491 Details : A lock's skiplist need to be cleanup when it being unlinked
492 from its resource list.
496 Description: Short directio read returns full requested size rather than
498 Details : Direct I/O operations should return actual amount of bytes
499 transferred rather than requested size.
501 Severity : enhancement
503 Description: metadata RPC reduction (e.g. for rm performance)
504 Details : decrease the amount of synchronous RPC between clients and servers
505 by canceling conflicing lock before the operation on the client side
506 and packing thier handles into the main operation RPC to server.
508 Severity : enhancement
510 Description: Async OSC create to avoid the blocking unnecessarily.
511 Details : If a OST has no remain object, system will block on the creating
512 when need to create a new object on this OST. Now, ways use
513 pre-created objects when available, instead of blocking on an
514 empty osc while others are not empty. If we must block, we block
515 for the shortest possible period of time.
517 --------------------------------------------------------------------------------
519 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
524 Frequency : on some architectures
526 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
527 Details : Uninitialized flags sometimes cause configuration commands to
531 Frequency : patchless clients only
533 Description: missing __iget() symbol export
534 Details : The __iget() symbol export is missing. To avoid the need for
535 this on patchless clients the deathrow inode reaper is turned
536 off, and we depend on the VM to clean up old inodes. This
537 dependency was during via the fix for bug 12181.
539 --------------------------------------------------------------------------------
541 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
543 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
544 INTEROPERATE with older versions automatically. In many cases a
545 special upgrade step is needed. Please read the
546 user documentation before upgrading any part of a live system.
547 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
548 version will not interoperate with 1.6 betas before beta5 (1.5.95).
549 * WARNING: Lustre configuration and startup changes are required with
550 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
556 Severity : enhancement
558 Description: MountConf
559 Details : Lustre configuration is now managed via mkfs and mount
560 commands instead of lmc and lconf. New obd types (MGS, MGC)
561 are added for dynamic configuration management. See
562 https://mail.clusterfs.com/wikis/lustre/MountConf for
565 Severity : enhancement
567 Description: dynamic OST addition
568 Details : OSTs can now be added to a live filesystem
570 Severity : enhancement
572 Description: startup order invariance
573 Details : MDTs and OSTs can be started in any order. Clients only
574 require the MDT to complete startup.
576 Severity : enhancement
578 Description: parallel, asynchronous orphan cleanup
579 Details : orphan cleanup is now performed in separate threads for each
580 OST, allowing parallel non-blocking operation.
582 Severity : enhancement
584 Description: optimized stripe assignment
585 Details : stripe assignments are now made based on ost space available,
586 ost previous usage, and OSS previous usage, in order to try
587 to optimize storage space and networking resources.
589 Severity : enhancement
591 Description: Permanently set tunables
592 Details : All writable /proc/fs/lustre tunables can now be permanently
593 set on a per-server basis, at mkfs time or on a live
596 Severity : enhancement
598 Description: Lustre message v2
599 Details : Add lustre message format v2.
601 Severity : enhancement
603 Description: client OST exclusion list
604 Details : Clients can be started with a list of OSTs that should be
605 declared "inactive" for known non-responsive OSTs.
609 Description: SPEC SFS validation failure on NFS v2 over lustre.
610 Details : Changes the blocksize for regular files to be 2x RPC size,
611 and not depend on stripe size.
613 Severity : enhancement
615 Description: Multiple MD RPCs in flight.
616 Details : Further unserialise some read-only MDS RPCs - learn about intents.
617 To avoid overly-overloading MDS, introduce a limit on number of
618 MDS RPCs in flight for a single client and add /proc controls
619 to adjust this limit.
621 Severity : enhancement
623 Description: client read/write statistics
624 Details : Add client read/write call usage stats for performance
625 analysis of user processes.
626 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
627 file access. extents_stats shows chunk size distribution.
628 extents_stats_per_process show chunk size distribution per
631 Severity : enhancement
633 Description: mds statistics
634 Details : Add detailed mds operations statistics in
635 /proc/fs/lustre/mds/*/stats.
639 Description: Failure of copying files with lustre special EAs.
640 Details : Client side always return success for setxattr call for lustre
641 special xattr (currently only "trusted.lov").
646 Description: Refcount LNET uuids
647 Details : The global LNET uuid list grew linearly with every startup;
648 refcount repeated list entries instead of always adding to
651 Severity : enhancement
653 Description: Dynamic service threads
654 Details : Within a small range, start extra service threads
655 automatically when the request queue builds up.
658 Frequency : mixed-endian client/server environments
660 Description: mixed-endian crashes
661 Details : The new msg_v2 system had some failures in mixed-endian
664 Severity : enhancement
666 Description: Easy OST removal
667 Details : OSTs can be permanently deactivated with e.g. 'lctl
668 conf_param lustre-OST0001.osc.active=0'
670 Severity : enhancement
672 Description: MGS proc entries
673 Details : Added basic proc entries for the MGS showing what filesystems
676 Severity : enhancement
678 Description: provide MGS failover
679 Details : Added config lock reacquisition after MGS server failover.
681 Severity : enhancement
683 Description: add Linux 2.4 support
684 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
688 Description: a large application tries to do I/O to the same resource and dies
690 Details : Check the req->rq_arrival time after the call to
691 ost_brw_lock_get(), but before we do anything about
692 processing it & sending the BULK transfer request. This
693 should help move old stale pending locks off the queue as
694 quickly as obd_timeout.
697 Frequency : when an incorrect nid is specified during startup
699 Description: ptlrpc connect to non-existant node causes kernel crash
700 Details : LNET can't be re-entered from an event callback, which
701 happened when we expire a message after the export has been
702 cleaned up. Instead, hand the zombie cleanup off to another
705 Severity : enhancement
707 Description: plain/inodebits lock performance improvement
708 Details : Grouping plain/inodebits in granted list by their request modes
709 and bits policy, thus improving the performance of search through
713 Frequency : only if OST filesystem is corrupted
715 Description: client incorrectly hits assertion in ptlrpc_replay_req()
716 Details : for a short time RPCs with bulk IO are in the replay list,
717 but replay of bulk IOs is unimplemented. If the OST filesystem
718 is corrupted due to disk cache incoherency and then replay is
719 started it is possible to trip an assertion. Avoid putting
720 committed RPCs into the replay list at all to avoid this issue.
723 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
725 Description: System hang on startup
726 Details : This bug allowed the liblustre (e.g. catamount) client to
727 return to the app before handling all startup RPCs. This
728 could leave the node unresponsive to lustre network traffic
729 and manifested as a server ptllnd timeout.
731 Severity : enhancement
733 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
734 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
735 boolean to control whether to print peer debug info when a
736 client's RPC times out.
739 Frequency : only for kernels with patches from Lustre below 1.4.3
741 Description: Remove old rdonly API
742 Details : Remove old rdonly API which unused from at least lustre 1.4.3
745 Frequency : only for devices with external journals
747 Description: Set external device read-only also
748 Details : During a commanded failover stop, we set the disk device
749 read-only while the server shuts down. We now also set any
750 external journal device read-only at the same time.
753 Frequency : when upgrading from 1.4 while trying to change parameters
755 Description: The wrong (new) MDC name was used when setting parameters for
756 upgraded MDT's. Also allows changing of OSC (and MDC)
757 parameters if --writeconf is specified at tunefs upgrade time.
760 Frequency : when setting specific ost indicies
762 Description: QOS code breaks on skipped indicies
763 Details : Add checks for missing OST indicies in the QOS code, so OSTs
764 created with --index need not be sequential.
766 Severity : enhancement
768 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
769 Details : The uninit_groups feature works in conjunction with the kernel
770 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
771 up the pass1 processing of e2fsck. This is a read-only feature
772 in ldiskfs2 only, so older kernels and current ldiskfs cannot
773 mount filesystems that have had this feature enabled.
775 Severity : enhancement
777 Description: Improve multi-block allocation algorithm to avoid fragmentation
778 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
779 allocation locality and avoid filesystem fragmentation.
781 ------------------------------------------------------------------------------
783 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
785 * Support for kernels:
786 2.4.21-47.0.1.EL (RHEL 3)
788 2.6.9-42.0.10.EL (RHEL 4)
789 2.6.12.6 vanilla (kernel.org)
790 2.6.16.27-0.9 (SLES 10)
791 * Recommended e2fsprogs version: 1.39.cfs5
793 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
797 Frequency : occasional, depends on client load and configuration
798 Bugzilla : 12181, 12203
799 Description: data loss for recently-modified files
801 Details : In some cases it is possible that recently written or created
802 files may not be written to disk in a timely manner (this should
803 normally be within 30s unless client IO load is very high).
804 The problem appears as zero-length files or files that are a
805 multiple of 1MB in size after a client crash or client eviction
806 that are missing data at the end of the file.
808 This problem is more likely to be hit on clients where files are
809 repeatedly created and unlinked in the same directory, clients
810 have a large amount of RAM, have many CPUs, the filesystem has
811 many OSTs, the clients are rebooted frequently, and/or the files
812 are not accessed by other nodes after being written.
814 The presence of the problem can be detected by looking at
815 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
816 smaller than the second (nr_unused) then dirty files will not
817 be flushed automatically to disk. "sync; sleep 10" should be
818 run several times on the node before unmounting it to update
819 Lustre (this is also safe to run on nodes without this problem).
821 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
822 that can cause this same problem, so customers using that kernel
823 also need to update the kernel in addition to Lustre. In order
824 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
826 It is normal that files written just before a client crash (less
827 than 30s) may not yet have been flushed to disk, even for local
831 Frequency : frequent on thin XT3 nodes
833 Description: UUID collision on thin XT3 Linux nodes
834 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
835 randomly, since we relied on an insufficiently-seeded PRNG.
840 Description: OSS hangs after "All ost request buffers busy"
841 Details : A deadlock between quota and journal operations caused OSS
842 hangs after printing "All ost request buffers busy."
845 Frequency : always on liblustre builds
847 Description: Cleanup compiler warnings on liblustre
850 Frequency : always on liblustre builds on XT3
852 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
856 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
857 > 32000 subdirectories
858 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
859 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
860 subdirectory count crosses 32000. This will aid e2fsck to
861 correctly handle more than 32000 subdirectories.
864 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
866 Description: System hang on startup
867 Details : This bug allowed the liblustre (e.g. catamount) client to
868 return to the app before handling all startup RPCs. This
869 could leave the node unresponsive to lustre network traffic
870 and manifested as a server ptllnd timeout.
872 Severity : enhancement
874 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
875 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
876 boolean to control whether to print peer debug info when a
877 client's RPC times out.
882 Description: make O_SYNC working on 2.6 kernels
883 Details : 2.6 kernels use different method for mark pages for write,
884 so need add a code to lustre for O_SYNC work.
889 Description: Failure to close file and release space on NFS
890 Details : Put inode details into lock acquired in ll_intent_file_open.
891 Use mdc_intent_lock in ll_intent_open to properly
892 detect all kind of errors unhandled by mdc_enqueue.
897 Description: proc file read during shutdown sometimes raced obd removal,
899 Details : Add lock to prevent obd access after proc file removal.
902 Frequency : Only for files larger than 4GB on 32-bit clients.
904 Description: improperly doing page alignment of locks
905 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
906 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
911 Description: RPCs being resent when they shouldn't be
912 Details : Some RPCs that should not be resent are being resent. This
913 can cause inconsistencies in the RPC state machine. Do not
914 resend such requests.
917 Frequency : rare, only with NFS export
919 Description: Crash on NFS re-export node
920 Details : under very unusual load conditions an assertion is hit in
921 ll_intent_file_open()
924 Frequency : only if OST filesystem is corrupted
926 Description: client incorrectly hits assertion in ptlrpc_replay_req()
927 Details : for a short time RPCs with bulk IO are in the replay list,
928 but replay of bulk IOs is unimplemented. If the OST filesystem
929 is corrupted due to disk cache incoherency and then replay is
930 started it is possible to trip an assertion. Avoid putting
931 committed RPCs into the replay list at all to avoid this issue.
936 Description: large O_DIRECT requests fail under memory pressure/fragmentation
937 Details : Large single O_DIRECT read and write calls can fail to allocate
938 a sufficiently large buffer to process the request. In case of
939 allocation failure the allocation is retried with a smaller
940 buffer and broken into smaller requests.
942 Severity : enhancement
944 Description: Add -o localflock option to simulate old noflock behaviour.
945 Details : This will achieve local-only flock/fcntl locks coherentness.
950 Description: versioning check is incomplete
951 Details : Checking the version difference of client vs. server, report
952 error if the gap is too big.
957 Description: add support PG_writeback bit
958 Details : add support for PG_writeback bit for Lustre, for more carefull
959 work with page cache in 2.6 kernel. This also fix some deadlocks
960 and remove hack for work O_SYNC with 2.6 kernel.
962 Severity : enhancement
964 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
965 Details : The uninit_groups feature works in conjunction with the kernel
966 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
967 up the pass1 processing of e2fsck. This is a read-only feature
968 in ldiskfs2 only, so older kernels and current ldiskfs cannot
969 mount filesystems that have had this feature enabled.
971 Severity : enhancement
973 Description: Improve multi-block allocation algorithm to avoid fragmentation
974 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
975 allocation locality and avoid filesystem fragmentation.
977 ------------------------------------------------------------------------------
979 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
981 * Support for kernels:
982 2.6.9-42.0.3.EL (RHEL 4)
984 2.4.21-47.0.1.EL (RHEL 3)
985 2.6.12.6 vanilla (kernel.org)
986 2.6.16.21-0.8 (SLES10)
987 * Recommended e2fsprogs version: 1.39.cfs2-0
989 * The backwards-compatible /proc/sys/portals symlink has been removed
990 in this release. Before upgrading, please ensure that you change
991 any configuration scripts or /etc/sysctl.conf files that access
992 /proc/sys/portals/* or sysctl portals.* to use the corresponding
993 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
994 in advance of the upgrade on any system running Lustre 1.4.6 or
995 newer, since /proc/sys/lnet was added in that version.
996 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1000 Frequency : only when quota is used
1002 Description: avoid scanning export list for quota master
1003 Details : Change the algorithms to avoid scanning export list in order
1004 to improve the efficiency.
1007 Frequency : MDS failover only, very rarely
1009 Description: "went back in time" messages on mds failover
1010 Details : The greatest transno may be lost when the current operation
1011 finishes with an error (transno==0) and the client's last_rcvd
1012 record is over-written. Save the greatest transno in the
1013 mds_last_transno for this case.
1016 Frequency : always for specific kernels and striping counts
1018 Description: client may get "Matching packet too big" without ACL support
1019 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
1020 when trying to access files in certain configurations. The
1021 clients should in fact be denied when mounting because they do
1022 not understand ACLs.
1025 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
1027 Description: many clients connecting with IO in progress causes connect timeouts
1028 Details : Avoid synchronous journal commits to avoid delays caused by many
1029 clients connecting/disconnecting when bulk IO is in progress.
1030 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
1031 OST_IO_PORTAL to avoid delays behind potentially many pending
1035 Frequency : occasionally with multiple writers to a single file
1037 Description: shared writes to file may result in wrong size reported by stat()
1038 Details : Allow growing of kms when extent lock is cancelled
1041 Frequency : always with random mmap IO to multi-striped file
1043 Description: mmap write might be lost if we are writing to a 'hole' in stripe
1044 Details : Only if the hole is at the end of OST object so that kms is too
1045 small. Fix is to increase kms accordingly in ll_nopage.
1048 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
1050 Description: writes to a missing object would leak memory on the OST
1051 Details : If there is an inconsistency between the MDS and OST filesystems,
1052 such that the MDS references an object that doesn't exist, writes
1053 to that object will leak memory due to incorrect cleanup in the
1054 error handling path, eventually running out of memory on the OST.
1059 Description: Creating too long symlink causes lustre errors
1060 Details : Check symlink and name lengths before sending requests to MDS.
1063 Frequency : only if flock is enabled (not on by default)
1065 Description: posix locks not released on fd closure on 2.6.9+
1066 Details : We failed to add posix locks to list of inode locks on 2.6.9+
1067 kernels, this caused such locks not to be released on fd close and
1068 then assertions on fs unmount about still used locks.
1071 Frequency : MDS failover only, very rarely
1073 Description: clients may get ASSERTION(granted_lock != NULL)
1074 Details : When request was taking a long time, and a client was resending
1075 a getattr by name lock request. The were multiple lock requests
1076 with the same client lock handle and
1077 mds_getattr_name->fixup_handle_for_resent_request found one of the
1078 lock handles but later failed with ASSERTION(granted_lock != NULL).
1083 Description: handle->h_buffer_credits > 0, assertion failure
1084 Details : h_buffer_credits is zero after truncate, causing assertion
1085 failure. This patch extends the transaction or creates a new
1089 Frequency : NFS re-export or patchless client
1090 Bugzilla : 11179, 10796
1091 Description: Crash on NFS re-export node (__d_move)
1092 Details : We do not want to hash the dentry if we don't have a lock.
1093 But if this dentry is later used in d_move, we'd hit uninitialised
1094 list head d_hash, so we just do this to init d_hash field but
1095 leave dentry unhashed.
1098 Frequency : NFS re-export or patchless client
1100 Description: NFS exports has problem with symbolic link
1101 Details : lustre client didn't properly install dentry when re-exported
1102 to NFS or running patchless client.
1105 Frequency : NFS re-export or patchless client
1107 Description: Various nfs/patchless fixes.
1108 Details : fixes reuse disconected alias for lookup process - this fixes
1109 warning "find_exported_dentry: npd != pd",
1110 fix permission error with open files at nfs.
1111 fix apply umask when do revalidate.
1114 Frequency : occasional
1116 Description: Crash on NFS re-export node
1117 Details : calling clear_page() on the wrong pointer triggered oops in
1118 generic_mapping_read().
1121 Frequency : rarely, using O_DIRECT IO
1123 Description: unaligned directio crashes client with LASSERT
1124 Details : check for unaligned buffers before trying any requests.
1127 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
1129 Description: stale data returned from RAID cache
1130 Details : If only a small amount of IO is done to the RAID device before
1131 reading it again it is possible to get stale data from the RAID
1132 cache instead of reading it from disk.
1135 Frequency : always for sles10 kernel
1137 Description: sles10 support
1138 Details : ll_follow_link: compile fixes and using of nd_set_link
1139 under newer kernels.
1142 Frequency : depends on arch, kernel and compiler version, always on sles10
1145 Description: recursive or deep enough symlinks cause stack overflow
1146 Details : getting rid of large stack-allocated variable in
1150 Frequency : depends on hardware
1152 Description: lustre write performance loss in the SLES10 kernel
1153 Details : the performance loss is caused by using of write barriers in the
1154 ext3 code. The SLES10 kernel turns barrier support on by
1155 default. The fix is to undo that change for ldiskfs.
1157 ------------------------------------------------------------------------------
1159 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
1161 * Support for kernels:
1162 2.6.9-42.0.3EL (RHEL 4)
1163 2.6.5-7.276 (SLES 9)
1164 2.4.21-47.0.1.EL (RHEL 3)
1165 2.6.12.6 vanilla (kernel.org)
1169 Frequency : quota enabled and large files being deleted
1171 Description: releasing more than 4GB of quota at once hangs OST
1172 Details : If a user deletes more than 4GB of files on a single OST it
1173 will cause the OST to spin in an infinite loop. Release
1174 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1179 Description: statfs data retrieved from /proc may be stale or zero
1180 Details : When reading per-device statfs data from /proc, in the
1181 {kbytes,files}_{total,free,avail} files, it may appear
1182 as zero or be out of date.
1185 Frequency : systems with MD RAID1 external journal devices
1187 Description: lconf's call to blkid is confused by RAID1 journal devices
1188 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1189 of returning all block devices that match the journal UUID.
1192 Frequency : always, for aggregate stripe size over 4GB
1194 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
1195 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
1196 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
1199 Frequency : always if "lfs find" used on a local file/directory
1201 Description: "lfs find" segfaults if used on a local file/directory
1202 Details : The case where a directory component was not specified wasn't
1203 handled correctly. Handle this properly.
1206 Frequency : always on ppc64
1208 Description: the write to an ext3 filesystem mounted with mballoc got stuck
1209 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1210 perform endianness conversion.
1213 Frequency : rarely (truncate to non-zero file size after write under load)
1214 Bugzilla : 10730, 10687
1215 Description: Files padded with zeros to next 4K multiple
1216 Details : With filesystems mounted using the "extents" option (2.6 kernels)
1217 it is possible that files that are truncated to a non-zero size
1218 immediately after being written are filled with zero bytes beyond
1219 the truncated size. No file data is lost.
1221 Severity : enhancement
1223 Description: Allow recovery/failover for liblustre clients.
1224 Details : liblustre clients were unaware of failover configurations until
1227 Severity : enhancement
1229 Description: user file locks should fail when not mounting with flock option
1230 Details : Set up an error-returning stub in ll_file_operations.lock field
1231 to prevent incorrect behaviour when client is mounted without
1232 flock option. Also, set up properly f_op->flock field for
1236 Frequency : always on ia64
1238 Description: "lfs df" loops on printing out MDS statfs information
1239 Details : The obd_ioctl_data was not initialized and in some systems
1240 this caused a failure during the ioctl that did not return
1241 an error. Initialize the struct and return an error on failure.
1244 Frequency : SLES 9 only
1246 Description: Error of copying files with lustre special EAs as root
1247 Details : Client side always return success for setxattr call for lustre
1248 special xattr (currently only "trusted.lov").
1251 Frequency : rarely on clusters with both ia64+i386 clients
1253 Description: ia64+i686 clients doing shared IO on the same file may LBUG
1254 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
1255 clients are doing concurrent writes to the same file it is
1256 possible that the ia64 clients may LASSERT because the OST
1257 extent locks are not PAGE_SIZE aligned. Ensure that grown
1258 locks are always aligned on the request boundary.
1261 Frequency : specific use, occasional
1263 Description: Overwriting in use executable truncates on-disk binary image
1264 Details : If one node attempts to overwrite an executable in use by
1265 another node, we now correctly return ETXTBSY instead of
1266 truncating the file.
1268 Severity : enhancement
1270 Description: Async OSC create to avoid the blocking unnecessarily.
1271 Details : If a OST has no remain object, system will block on the creating
1272 when need to create a new object on this OST. Now, ways use
1273 pre-created objects when available, instead of blocking on an
1274 empty osc while others are not empty. If we must block, we block
1275 for the shortest possible period of time.
1280 Description: chmod on Lustre root is propagated to other clients
1281 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
1282 invalid by the follow_mount time.
1285 Frequency : liblustre clients only
1287 Description: Race in 'instant cancel' lock handling could lead to such locks
1288 never to be granted in case of SMP MDS
1289 Details : Do not destroy not yet granted but cbpending locks in
1293 Frequency : replay/resend of open
1295 Description: non null lock assetion failure in mds_intent_policy
1296 Details : Trying to replay/resend lockless open requests resulted in
1297 mds_open() returning 0 with no lock. Now it sets a flag if
1298 a lock is going to be returned.
1300 Severity : enhancement
1302 Description: Checksum enhancements
1303 Details : New checksum enhancements allow for resending RPCs that failed
1306 Severity : enhancement
1308 Description: Tunables on number of dirty pages in cacche
1309 Details : Allow to set limit on number of dirty pages cached.
1314 Description: client crash on unmount - lock still has references
1315 Details : In some error handling cases it was possible to leak a lock
1316 reference on a client while accessing a file. This was not
1317 harmful to the client during operation, but would cause the
1318 client to crash when the filesystem is unmounted.
1321 Frequency : specific case, rare
1323 Description: ETXTBSY on mds though file not in use by client
1324 Details : ETXTBSY is no longer incorrectly returned when attempting to
1325 chmod or chown a directory that the user previously tried to
1326 execute or a currently-executing binary.
1329 Frequency : extremely rare except on liblustre-based clients
1331 Description: Lustre space not freed when files are deleted
1332 Details : Clean up open-unlinked files after client eviction. Previously
1333 the unlink was skipped and the files remained as orphans.
1338 Description: OST failure "would be an LBUG" in waiting_locks_callback()
1339 Details : In some cases it was possible to send a blocking callback to
1340 a client doing a glimpse, even though that client didn't get
1341 a lock granted. When the glimpse lock is cancelled on the OST
1342 the freed lock is left on the waiting list and corrupted the list.
1345 Frequency : all core dumps
1347 Description: Broke core dumps to lustre
1348 Details : Negative dentry may be unhashed if parent does not have UPDATE
1349 lock, but some callers, e.g. do_coredump, expect dentry to be
1350 hashed after successful create, hash it in ll_create_it.
1352 ------------------------------------------------------------------------------
1354 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
1356 * Support for kernels:
1357 2.6.9-42.0.2.EL (RHEL 4)
1358 2.6.5-7.276 (SLES 9)
1359 2.4.21-40.EL (RHEL 3)
1360 2.6.12.6 vanilla (kernel.org)
1364 Frequency : always on RHEL 3
1366 Description: Number of open files grows over time
1367 Details : The number of open files grows over time, whether or not
1368 Lustre is started. This was due to a filp leak introduced
1369 by one of our kernel patches.
1371 ------------------------------------------------------------------------------
1373 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1375 * Support for kernels:
1376 2.6.9-42.EL (RHEL 4)
1377 2.6.5-7.276 (SLES 9)
1378 2.4.21-40.EL (RHEL 3)
1379 2.6.12.6 vanilla (kernel.org)
1384 Bugzilla : 5719, 9635, 9792, 9684
1385 Description: OST (or MDS) trips assertions in (re)connection under heavy load
1386 Details : If a server is under heavy load and cannot reply to new
1387 connection requests before the client resends the (re)connect,
1388 the connection handling code can behave badly if two service
1389 threads are concurrently handing separate (re)connections from
1390 the same client. Add better locking to the connection handling
1391 code, and ensure that only a single connection will be processed
1392 for a given client UUID, even if the lock is dropped.
1394 Severity : enhancement
1396 Description: add TCP zero-copy support to kernel
1397 Details : Add support to the kernel TCP stack to allow zero-copy bulk
1398 sends if the hardware supports scatter-gather and checksumming.
1399 This allows socklnd to do client-write and server-read more
1400 efficiently and reduce CPU utilization from skbuf copying.
1403 Frequency : only if NFS exporting from client
1405 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
1406 Details : If setting attributes on a file created under NFS that had
1407 never been opened it would be possible to oops the client
1408 if the file had no objects.
1411 Frequency : always for liblustre
1413 Description: liblustre client does MDS+OSTs setattr RPC for each write
1414 Details : When doing a write from a liblustre client, the client
1415 incorrectly issued an RPC to the MDS and each OST the file was
1416 striped over in order to update the timestamps. When writing
1417 with small chunks and many clients this could overwhelm the MDS
1418 with RPCs. In all cases it would slow down the write because
1419 these RPCs are unnecessary.
1421 Severity : enhancement
1423 Description: allow number of MDS service threads to be changed at module load
1424 Details : It is now possible to change the number of MDS service threads
1425 running. Adding "options mds mds_num_threads={N}" to the MDS's
1426 /etc/modprobe.conf will set the number of threads for the next
1427 time Lustre is restarted (assuming the "mds" module is also
1428 reloaded at that time). The default number of threads will
1429 stay the same, 32 for most systems.
1434 Description: OST crash if filesystem is unformatted or corrupt
1435 Details : If an OST is started on a device that has never been formatted
1436 or if the filesystem is corrupt and cannot even mount then the
1437 error handling cleanup routines would dereference a NULL pointer.
1442 Description: NULL pointer deref in llap_from_page.
1443 Details : get_cache_page_nowait can return a page with NULL (or otherwise
1444 incorrect) mapping if the page was truncated/reclaimed while it was
1445 searched for. Check for this condition and skip such pages when
1446 doing readahead. Introduce extra check to llap_from_page() to
1447 verify page->mapping->host is non-NULL (so page is not anonymous).
1450 Frequency : Sometimes when using sys_sendfile
1452 Description: "page not covered by a lock" warnings from ll_readpage
1453 Details : sendfile called ll_readpage without right page locks present.
1454 Now we introduced ll_file_sendfile that does necessary locking
1455 around call to generic_file_sendfile() much like we do in
1459 Frequency : with certain MDS communication failures at client mount time
1461 Description: NULL pointer deref after failed client mount
1462 Details : a client connection request may delayed by the network layer
1463 and not be sent until after the PTLRPC layer has timed out the
1464 request. If the client fails the mount immediately it will try
1465 to clean up before the network times out the request. Add a
1466 reference from the request import to the obd device and delay
1467 the cleanup until the network drops the request.
1470 Frequency : occasionally during client (re)connect
1472 Description: assertion failure during client (re)connect
1473 Details : processing a client connection request may be delayed by the
1474 client or server longer than the client connect timeout. This
1475 causes the client to resend the connection request. If the
1476 original connection request is replied in this interval, the
1477 client may trip an assertion failure in ptlrpc_connect_interpret()
1478 which thought it would be the only running connect process.
1481 Frequency : only with obd_echo servers and clients that are rebooted
1483 Description: kernel BUG accessing uninitialized data structure
1484 Details : When running an obd_echo server it did not start the ping_evictor
1485 thread, and when a client was evicted an uninitialized data
1486 structure was accessed. Start the ping_evictor in the RPC
1487 service startup instead of the OBD startup.
1489 Severity : enhancement
1490 Bugzilla : 10193 (patchless)
1491 Description: Remove dependency on various unexported kernel interfaces.
1492 Details : No longer need reparent_to_init, exit_mm, exit_files,
1493 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
1496 Frequency : rare (only users of deprecated and unsupported LDAP config)
1498 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
1499 Details : LDAP apparently contains 'lustreName' attributes instead of
1500 'name'. A simple remapping of the name is sufficient.
1503 Frequency : rare (only with non-default dump_on_timeout debug enabled)
1505 Description: waiting_locks_callback trips kernel BUG if client is evicted
1506 Details : Running with the dump_on_timeout debug flag turned on makes
1507 it possible that the waiting_locks_callback() can try to dump
1508 the Lustre kernel debug logs from an interrupt handler. Defer
1509 this log dumping to the expired_lock_main() thread.
1511 Severity : enhancement
1513 Description: Support NFS exporting on 2.6 kernels.
1514 Details : Implement non-rawops metadata methods for NFS server to use without
1515 changing NFS server code.
1518 Frequency : very rare (synthetic metadata workload only)
1520 Description: two racing renames might cause an MDS thread to deadlock
1521 Details : Running the "racer" program may cause one MDS thread to rename
1522 a file from being the source of a rename to being the target of
1523 a rename at exactly the same time that another thread is doing
1524 so, and the second thread has already enqueued these locks after
1525 doing a lookup of the target and is trying to relock them in
1526 order. Ensure that we don't try to re-lock the same resource.
1529 Frequency : only very large systems with liblustre clients
1531 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
1532 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
1533 all OSTs in parallel. This allows the eviction of stale liblustre
1534 clients to proceed much faster than if they were done in series,
1535 and also offers similar improvements for other set_info RPCs.
1540 Description: excessive CPU usage during initial read phase on client
1541 Details : During the initial read phase on a client, it would agressively
1542 retry readahead on the file, consuming too much CPU and impacting
1543 performance (since 1.4.5.8). Improve the readahead algorithm
1544 to avoid this, and also improve some other common cases (read
1545 of small files in particular, where "small" is files smaller than
1546 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
1551 Description: MDS crash when receiving packet with unknown intent.
1552 Details : Do not LBUG in unknown intent case, just return -EFAULT
1554 Severity : enhancement
1555 Bugzilla : 9293, 9385
1556 Description: MDS RPCs are serialised on client. This is unnecessary for some.
1557 Details : Do not serialize getattr (non-intent version) and statfs.
1560 Frequency : occasional, when OST network is overloaded/intermittent
1562 Description: client evicted by OST after bulk IO timeout
1563 Details : If a client sends a bulk IO request (read or write) the OST
1564 may evict the client if it is unresposive to its data GET/PUT
1565 request. This is incorrect if the network is overloaded (takes
1566 too long to transfer the RPC data) or dropped the OST GET/PUT
1567 request. There is no need to evict the client at all, since
1568 the pinger and/or lock callbacks will handle this, and the
1569 client can restart the bulk request.
1572 Frequency : Always when mmapping file with no objects
1574 Description: client crashes when mmapping file with no objects
1575 Details : Check that we actually have objects in a file before doing any
1576 operations on objects in ll_vm_open, ll_vm_close and
1582 Description: Request leak when working with deleted CWD
1583 Details : Introduce advanced request refcount tracking for requests
1584 referenced from lustre intent.
1586 Severity : Enhancement
1588 Description: Cache open file handles on client.
1589 Details : MDS now will return special lock along with openhandle, if
1590 requested and client is allowed to hold openhandle, even if unused,
1591 until such a lock is revoked. Helps NFS a lot, since NFS is opening
1592 closing files for every read/write openration.
1594 Severity : Enhancement
1596 Description: Cache open negative dentries on client when possible.
1597 Details : Guard negative dentries with UPDATE lock on parent dir, drop
1598 negative dentries on lock revocation.
1603 Description: Remounting a client read-only wasn't possible with a zconf mount
1604 Details : It wasn't possible to remount a client read-only with llmount.
1606 Severity : enhancement
1607 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
1608 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
1609 MPICH is included to add Lustre-specific ADIO interfaces.
1610 This is based closely on the UFS ADIO layer and only differs
1611 in file creation, in order to allow the OST striping to be set.
1612 This is user-contributed code and not supported by CFS.
1617 Description: extended inode attributes (immutable, append-only) work improperly
1618 when 2.4 and 2.6 kernels are used on client/server or vice versa
1619 Details : Introduce kernel-independent values for these flags.
1621 Severity : enhancement
1624 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
1625 Details : Many of the /proc/ tunables can only be tuned at a megabyte
1626 granularity. Now, Fractional MB granularity is be supported,
1627 this is very useful for low memory system.
1629 Severity : enhancement
1631 Description: Getattr by fid
1632 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
1633 locks, avoids extra getattr rpc requests to MDS, allows '/' to
1634 have locks and avoids getattr rpc requests for it on every stat.
1637 Frequency : Always, for filesystems larger than 2TB
1639 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1640 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
1641 filesystems larger than 2TB to be mounted with mballoc enabled.
1644 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
1646 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1647 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
1648 filesystems larger than 2TB is mounted then the kernel will
1649 silently corrupt the start of the filesystem. CONFIG_LBD is
1650 enabled for all CFS-supported kernels, but the possibility of
1651 this happening with a modified kernel config exists.
1653 Severity : enhancement
1655 Description: add client O_DIRECT support for 2.6 kernels
1656 Details : It is now possible to do O_DIRECT reads and writes to files
1657 in the Lustre client mountpoint on 2.6 kernel clients.
1659 Severity : enhancement
1661 Description: parallel glimpse, setattr, statfs, punch, destroy requests
1662 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
1663 parallel, not waiting for response from every OST before sending
1664 a rpc to the next OST.
1669 Description: setattr vs write race when updating file timestamps
1670 Details : Client processes that update a file timestamp into the past
1671 right after writing to the file (e.g. tar) it is possible that
1672 the updated file modification time can be reset to the current
1673 time due to a race between processing the setattr and write RPC.
1675 Severity : enhancement
1677 Description: Bring 'lfs find' closer in line with regular Linux find.
1678 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
1679 -print0 options and obtains all the needed info through the lustre
1682 Severity : enhancement
1684 Description: support up to 1024 configured devices on one node
1685 Details : change obd_dev array from statically allocated to dynamically
1686 allocated structs as they are first used to reduce memory usage
1691 Description: Flush dirty partially truncated pages during truncate
1692 Details : Immediatelly flush partially truncated pages in filter_setattr,
1693 this way we completely avoid having any pages in page cache on OST
1694 and can retire ugly workarounds during writes to flush such pages.
1699 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1700 Details : protect inode from truncation within vfs_unlink() context
1701 just take a reference before calling vfs_unlink() and release it
1702 when parent's i_sem is free.
1707 Description: last_id value checked outside lock on OST caused LASSERT failure
1708 Details : If there were multiple MDS->OST object precreate requests in
1709 flight, it was possible that the OST's last object id was checked
1710 outside a lock and incorrectly tripped an assertion. Move checks
1711 inside locks, and discard old precreate requests.
1714 Frequency : always, if extents are used on OSTs
1716 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1717 Details : OSTs using the extents format would not zero the high 16 bits of
1718 the index physical block number. This is not a problem for any
1719 OST filesystems smaller than 16TB, and no kernels support ext3
1720 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1721 new/modified files) and can be fixed for existing filesystems
1722 with e2fsprogs-1.39-cfs1.
1727 Description: import connection selection may be incorrect if timer wraps
1728 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1729 import connections to be ignored if the 32-bit jiffies counter
1730 wraps. Use a 64-bit jiffies counter.
1733 Frequency : very large clusters immediately after boot
1735 Description: LNET request buffers exhausted under heavy short-term load
1736 Details : If a large number of client requests are generated on a service
1737 that has previously never seen so many requests it is possible
1738 that the request buffer growth cannot keep up with the spike in
1739 demand. Instead of dropping incoming requests, they are held in
1740 the LND until the RPC service can accept more requests.
1743 Frequency : Sometimes during replay
1745 Description: Assertion failure in ll_local_open after replay.
1746 Details : If replay happened on an open request reply before we were able
1747 to set replay handler, reply will become not swabbed tripping the
1748 assertion in ll_local_open. Now we set the handler right after
1749 recognising of open request
1752 Frequency : very rare
1754 Description: kernel reports "badness in vsnprintf"
1755 Details : Reading from the "recovery_status" /proc file in small chunks
1756 may cause a negative length in lprocfs_obd_rd_recovery_status()
1757 call to vsnprintf() (which is otherwise harmless). Exit early
1758 if there is no more space in the output buffer.
1760 Severity : enhancement
1762 Description: clear OBD RPC statistics by writing to them
1763 Details : It is now possible to clear the OBD RPC statistics by writing
1764 to the "stats" file.
1769 Description: Client mtime is not the same on different clients after utimes
1770 Details : In some cases, the client was using the utimes() syscall on
1771 a file cached on another node. The clients now validate the
1772 ctime from the MDS + OSTs to determine which one is right.
1777 Description: Inability to activate failout mode
1778 Details : lconf script incorrectly assumed that in pythong string's numeric
1779 value is used in comparisons.
1782 Frequency : always with multiple stripes per file
1784 Description: Inefficient object allocation for mutli-stripe files
1785 Details : When selecting which OSTs to stripe files over, for files with
1786 a stripe count that divides evenly into the number of OSTs,
1787 the MDS is always picking the same starting OST for each file.
1788 Return the OST selection heuristic to the original design.
1793 Description: mount failures may take full timeout to return an error
1794 Details : Under some heavy load conditions it is possible that a
1795 failed mount can wait for the full obd_timeout interval,
1796 possibly several minutes, before reporting an error.
1797 Instead return an error as soon as the status is known.
1799 Frequency : quota enabled and large files being deleted
1801 Description: releasing more than 4GB of quota at once hangs OST
1802 Details : If a user deletes more than 4GB of files on a single OST it
1803 will cause the OST to spin in an infinite loop. Release
1804 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1809 Description: statfs data retrieved from /proc may be stale or zero
1810 Details : When reading per-device statfs data from /proc, in the
1811 {kbytes,files}_{total,free,avail} files, it may appear
1812 as zero or be out of date.
1815 Frequency : systems with MD RAID1 external journal devices
1817 Description: lconf's call to blkid is confused by RAID1 journal devices
1818 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1819 of returning all block devices that match the journal UUID.
1822 Frequency : always, for aggregate stripe size over 4GB
1824 Description: assertion fails when trying to use 4GB stripe size
1825 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
1826 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
1829 Frequency : always on ppc64
1831 Description: the first write on an ext3 filesystem with mballoc got stuck
1832 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1833 perform endianness conversion.
1835 ------------------------------------------------------------------------------
1837 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1839 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
1840 INTEROPERATE with older versions automatically. Please read the
1841 user documentation before upgrading any part of a live system.
1842 * WARNING: Lustre networking configuration changes are required with
1843 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
1846 * Support for kernels:
1847 2.6.9-22.0.2.EL (RHEL 4)
1848 2.6.5-7.244 (SLES 9)
1849 2.6.12.6 vanilla (kernel.org)
1852 Severity : enhancement
1853 Bugzilla : 7981/8208
1854 Description: Introduced Lustre Networking (LNET)
1855 Details : LNET is new networking infrastructure for Lustre, it includes
1856 a reorganized network configuration mode (see the user
1857 documentation for full details) as well as support for routing
1858 between different network fabrics. Lustre Networking Devices
1859 (LNDs) for the supported network fabrics have also been
1860 created for this new infrastructure.
1862 Severity : enhancement
1863 Description: Introduced Access control lists
1864 Details : clients can set ACLs on files and directories in order to have
1865 more fine-grained permissions than the standard Unix UGO+RWX.
1866 The MDS must be started with the "-o acl" mount option.
1868 Severity : enhancement
1869 Description: Introduced filesystem quotas
1870 Details : Administrators may now establish per-user quotas on the
1873 Severity : enhancement
1875 Description: Configuration change for the XT3
1876 The PTLLND is now used to run Lustre over Portals on the XT3
1877 The configure option(s) --with-cray-portals are no longer used.
1878 Rather --with-portals=<path-to-portals-includes> is used to
1879 enable building on the XT3. In addition to enable XT3 specific
1880 features the option --enable-cray-xt3 must be used.
1885 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
1886 Details : A race between allocating a new llcd and re-getting the llcd_lock
1887 allowed another thread to grab newly-allocated llcd.
1889 Severity : enhancement
1891 Description: 2.6 OST async journal commit and locking fix to improve performance
1892 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
1893 2.6 kernels are now async as they already were in 2.4 kernels so
1894 that they can commit concurrently with the network bulk transfer.
1895 For block-allocated files the filter allocation semaphore is held
1896 to avoid filesystem fragmentation during allocation. BKL lock
1897 removed for 2.6 xattr operations where it is no longer needed.
1902 Description: lconf incorrectly determined whether two IP networks could talk
1903 Details : In some more complicated routing and multiple-network
1904 configurations, lconf will avoid trying to make a network
1905 connection to a disjoint part of the IP space. It was doing the
1906 math incorrectly for one set of cases.
1911 Description: Fix for potential infinite loop processing records in an llog.
1912 Details : If an llog record is corrupted/zeroed, it is possible to loop
1913 forever in llog_process(). Validate the llog record length
1914 and skip the remainder of the block on error.
1917 Frequency : occasional (liblustre only)
1919 Description: liblustre could not open files whose last component is a symlink
1920 Details : sysio_path_walk() would incorrectly pass the open intent to
1921 intermediate path components.
1924 Frequency : rare (liblustre only with non-standard tuning)
1925 Bugzilla : 7201 (7350)
1926 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
1927 Details : llu_lookup_finish_locks() tries to set lock data on a lock
1928 after it has been released, only do this for referenced locks
1930 Severity : enhancement
1932 Description: specifying an (invalid) directory default stripe_size of -1
1933 would reset the directory default striping
1934 Details : stripe_size -1 was used internally to signal directory stripe
1935 removal, now use "all default" to signal dir stripe removal
1936 as a directory striping of "all default" is not useful
1939 Frequency : common for large clusters running liblustre clients
1941 Description: doing an ls when liblustre clients are running is slow
1942 Details : sending a glimpse AST to a liblustre client waits for every AST
1943 to time out, as liblustre clients will not respond. Since they
1944 cannot cache data we refresh the OST lock LVB from disk instead.
1946 Severity : enhancement
1948 Description: doing an ls at the same time as file IO can be slow
1949 Details : enqueue and other "small" requests can be blocked behind many
1950 large IO requests. Create a new OST IO portal for non-IO
1951 requests so they can be processed faster.
1954 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
1956 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
1957 created file with mode 000
1958 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
1959 allow an ftruncate() as a non-root user to a file with mode 000.
1960 Lustre now respects this flag to disable mode checks when
1961 truncating a file owned by the user
1964 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
1967 Description: Revoking locks from clients that went dead or catatonic might take
1969 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
1970 cancellation of such locks instant on servers without waiting for
1971 any reply from clients. Clients drops these locks when cancel
1972 notification from server is received without replying.
1975 Frequency : liblustre-only, when liblustre client dies or becomes busy
1977 Description: Doing ls on Linux clients can take a long time with active
1979 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
1980 granting such locks to it in the first place if possible. Locks
1981 are taken by proxy on the OST during the read or write and
1982 dropped immediately afterward. Add connect flags handling, do
1983 not grant locks to liblustre clients for glimpse ASTs.
1985 Severity : enhancement
1987 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
1988 Details : Existing read-ahead algorithm is tuned for the case of streamlined
1989 sequential reads and behaves badly with applications doing random
1990 reads. Improve it by reading ahead at least read region, and
1991 avoiding excessive large RPC for small reads.
1993 Severity : enhancement
1995 Description: Creating more than 1000 files for a single job may cause a load
1996 imbalance on the OSTs if there are also a large number of OSTs.
1997 Details : qos_prep_create() uses an OST index reseed value that is an
1998 even multiple of the number of available OSTs so that if the
1999 reseed happens in the middle of the object allocation it will
2000 still utilize the OSTs as uniformly as possible.
2005 Description: OST or MDS may oops in ping_evictor_main()
2006 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
2007 but doesn't restart at beginning of obd_exports_timed list
2010 Severity : enhancement
2012 Description: improve by-nid export eviction on the MDS and OST
2013 Details : allow multiple exports with the same NID to be evicted at one
2014 time without re-searching the exports list.
2017 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
2019 Description: MDS may oops in groups_free()
2020 Details : in rare race conditions a newly allocated group_info struct is
2021 freed again, and this can be NULL. The 2.4 compatibility code
2022 for groups_free() checked for a NULL pointer, but 2.6 did not.
2025 Frequency : common for liblustre clients doing little filesystem IO
2026 Bugzilla : 9352, 7313
2027 Description: server may evict liblustre clients accessing contended locks
2028 Details : if a client is granted a lock or receives a completion AST
2029 with a blocking AST already set it would not reply to the AST
2030 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
2033 Frequency : lfs setstripe, only systems with more than 160 OSTs
2035 Description: unable to set striping with a starting offset beyond OST 160
2036 Details : llapi_create_file() incorrectly limited the starting stripe
2037 index to the maximum single-file stripe count.
2040 Frequency : LDAP users only
2042 Description: lconf did not handle in-kernel recovery with LDAP properly
2043 Details : lconf/LustreDB get_refs() is searching the wrong namespace
2045 Severity : enhancement
2047 Description: bind OST threads to NUMA nodes to improve performance
2048 Details : all OST threads are uniformly bound to CPUs on a single NUMA
2049 node and do their allocations there to localize memory access
2051 Severity : enhancement
2053 Description: llmount can determine client NID directly from Myrinet (GM)
2054 Details : the client NID code from gmnalnid was moved directly into
2055 llmount, removing the need to use this or specifying the
2056 client NID explicitly when mounting GM clients with zeroconf
2059 Frequency : if client is started with down MDS
2061 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
2062 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
2063 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
2064 ptlrpc_import_delayed_req() because we didn't check if the
2065 request was interrupted, and we also didn't break out of the
2066 event loop if there was no timeout
2071 Description: data loss during non-page-aligned writes to a single file from
2072 both multiple nodes and multiple threads on one node at same time
2073 Details : updates to KMS and lsm weren't protected by common lock. Resulting
2074 inconsistency led to false short-reads, that were cached and later
2075 used by ->prepare_write() to fill in partially written page,
2076 leading to data loss.
2079 Frequency : always, if lconf --abort_recovery used
2081 Description: lconf --abort_recovery fails with 'Operation not supported'
2082 Details : lconf was attempting to abort recovery on the MDT device and not
2085 Severity : enhancement
2087 Description: remove cleanup logs
2088 Details : replace lconf-generated cleanup logs with lustre internal
2089 cleanup routines. Eliminates the need for client-cleanup and
2092 Severity : enhancement
2094 Description: add support for EAs (user and system) on lustre filesystems
2095 Details : it is now possible to store extended attributes in the Lustre
2096 client filesystem, and with the user_xattr mount option it
2097 is possible to allow users to store EAs on their files also
2099 Severity : enhancement
2101 Description: Add possibility (config option) to show minimal available OST free
2103 Details : When compiled with --enable-mindf configure option, statfs(2)
2104 (and so, df) will return least minimal free space available from
2105 all OSTs as amount of free space on FS, instead of summary of
2106 free spaces of all OSTs.
2108 Severity : enhancement
2110 Description: do not expand extent locks acquired on OST-side
2111 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
2112 by server: they are not cached anyway.
2115 Frequency : when mmap is used/binaries executed from Lustre
2117 Description: Unmmap pages before throwing them away from read cache.
2118 Details : llap_shrink cache now attempts to unmap pages before discarding
2119 them (if unmapping failed - do not discard). SLES9 kernel has
2120 extra checks that trigger if this unmapping is not done first.
2125 Description: lconf didn't resolve symlinks before checking to see whether a
2126 given mountpoint was already in use
2129 Frequency : when migrating failover services
2130 Bugzilla : 6395, 9514
2131 Description: When migrating a subset of services from a node (e.g. failback
2132 from a failover service node) the remaining services would
2133 time out and evict clients.
2134 Details : lconf --force (implied by --failover) sets the global obd_timeout
2135 to 5 seconds in order to quickly disconnect, but this caused
2136 other RPCs to time out too quickly. Do not change the global
2137 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
2139 Severity : enhancement
2140 Frequency : if MDS is started with down OST
2141 Bugzilla : 9439,5706
2142 Description: Allow startup/shutdown of an MDS without depending on the
2143 availability of the OSTs.
2144 Details : Asynchronously call mds_lov_synchronize during MDS startup.
2145 Add appropriate locking and lov-osc refcounts for safe
2146 cleaning. Add osc abort_inflight calls in case the
2147 synchronize never started.
2150 Frequency : occasional (Cray XT3 only)
2152 Description: root not authorized to access files in CRAY_PORTALS environment
2153 Details : The client process capabilities were not honoured on the MDS in
2154 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
2155 been accessed by an authorized user then root was able to access
2156 the file on the local client also. The root user capabilities
2157 are now allowed on the MDS, as this environment has secure UID.
2160 Frequency : occasional
2162 Description: ldiskfs "too long searching" message happens too often
2163 Details : A debugging message (otherwise harmless) prints too often on
2164 the OST console. This has been reduced to only happen when
2165 there are fragmentation problems on the filesystem.
2170 Description: Division by zero in statfs when all OSCs are inactive
2171 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
2172 lov_statfs divides by value returned by lov_get_stripecnt().
2176 Bugzilla : 9489, 3273
2177 Description: First write from each client to each OST was only 4kB in size,
2178 to initialize client writeback cache, which caused sub-optimal
2179 RPCs and poor layout on disk for the first writen file.
2180 Details : Clients now request an initial cache grant at (re)connect time
2181 and so that they can start streaming writes to the cache right
2182 away and always do full-sized RPCs if there is enough data.
2183 If the OST is rebooted the client also re-establishes its grant
2184 so that client cached writes will be honoured under the grant.
2189 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
2190 Details : Now I/O RPCs go to different portal number and (presumably) fast
2191 lock requests (and glimses) and other RPCs get their own service
2192 threads pool that should be able to service those RPCs
2195 Severity : enhancement
2197 Description: Ability to exchange lustre version between client and servers and
2198 issue warnings at client side if client is too old. Also for
2199 liblustre clients there is ability to refuse connection of too old
2201 Details : New 'version' field is added to connect data structure that is
2202 filled with version info. That info is later checked by server and
2206 Frequency : rare, liblustre only.
2207 Bugzilla : 9296, 9581
2208 Description: Two simultaneous writes from liblustre at offset within same page
2209 might proceed at the same time overwriting eachother with stale
2211 Details : I/O lock withing llu_file_prwv was released too early, before data
2212 actually was hitting the wire. Extended lock-holding time until
2213 server acknowledges receiving data.
2216 Frequency : extremely rare. Never observed in practice.
2218 Description: avoid generating lustre_handle cookie of 0.
2219 Details : class_handle_hash() generates handle cookies by incrementing
2220 global counter, and can hit 0 occasionaly (this is unlikely, but
2221 not impossible, because initial value of cookie counter is
2222 selected randonly). Value of 0 is used as a sentinel meaning
2223 "unassigned handle" --- avoid it. Also coalesce two critical
2224 sections in this function into one.
2226 Severity : enhancement
2228 Description: allow liblustre clients to delegate truncate locking to OST
2229 Details : To avoid overhead of locking, liblustre client instructs OST to
2230 take extent lock in ost_punch() on client's behalf. New connection
2231 flag is added to handle backward compatibility.
2233 Severity : enhancement
2234 Bugzilla : 4928, 7341, 9758
2235 Description: allow number of OST service threads to be specified
2236 Details : a module parameter allows the number of OST service threads
2237 to be specified via "options ost ost_num_threads={N}" in the
2238 OSS's /etc/modules.conf or /etc/modprobe.conf.
2242 Bugzilla : 6146, 9635, 9895
2243 Description: servers crash with bad pointer in target_handle_connect()
2244 Details : In rare cases when a client is reconnecting it was possible that
2245 the connection request was the last reference for that export.
2246 We would temporarily drop the export reference and get a new
2247 one, but this may have been the last reference and the export
2248 was just destroyed. Get new reference before dropping old one.
2250 Severity : enhancement
2251 Frequency : if client is started with failover MDS
2253 Description: Allow multiple MDS hostnames in the mount command
2254 Details : Try to read the configuration from all specified MDS
2255 hostnames during a client mount in case the "primary"
2258 Severity : enhancement
2260 Description: Stop sending data to evicted clients as soon as possible.
2261 Details : Check if the client we are about to send or are sending data to
2262 was evicted already. (Check is done every second of waiting,
2263 for which l_wait_event interface was extended to allow checking
2264 of exit condition at specified intervals).
2267 Frequency : rare, normally only when NFS exporting is done from client
2269 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
2271 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
2274 Frequency : always, if srand() is called before liblustre initialization
2276 Description: Liblustre uses system PRNG disturbing its usage by user application
2277 Details : Introduce internal to lustre fast and high-quality PRNG for
2278 lustre usage and make liblustre and some other places in generic
2279 lustre code to use it.
2281 Severity : enhancement
2282 Bugzilla : 9477, 9557, 9870
2283 Description: Verify that the MDS configuration logs are updated when xml is
2284 Details : Check if the .xml configuration logs are newer than the config
2285 logs stored on the MDS and report an error if this is the case.
2286 Request --write-conf, or allow starting with --old_conf.
2288 Severity : enhancement
2290 Description: Handle symlinks in the path when checking if Lustre is mounted.
2291 Details : Resolve intermediate symlinks when checking if a client has
2292 mounted a filesystem to avoid duplicate client mounts.
2297 Description: lconf can hit an error exception but still return success.
2298 Details : The lconf command catches the Command error exception at the top
2299 level script context and will exit with the associated exit
2300 status, but doesn't ensure that this exit status is non-zero.
2305 Description: failure of ptlrpc thread startup can cause oops
2306 Details : Starting a ptlrpc service thread can fail if there are a large
2307 number of threads or the server memory is very fragmented.
2308 Handle this without oopsing.
2311 Frequency : always, only if liblustre and non-default acceptor port was used
2313 Description: liblustre cannot connect to servers with non-default acceptor port
2314 Details : tcpnal_set_default_params() was not called and was therefore
2315 ignoring the environment varaible TCPNAL_PORT, as well as other
2316 TCPNAL_ environment variables
2321 Description: two objects could be created on the same OST for a single file
2322 Details : If an OST is down, in some cases it was possible to create two
2323 objects on a single OST for a single file. No problems other
2324 than potential performance impact and spurious error messages.
2328 Bugzilla : 5681, 9562
2329 Description: Client may oops in ll_unhash_aliases
2330 Details : Client dcache may become inconsistent in race condition.
2331 In some cases "getcwd" can fail if the current directory is
2337 Description: Inode refcounting problems in NFS export code
2338 Details : link_raw functions used to call d_instantiate without obtaining
2339 extra inode reference first.
2343 Bugzilla : 9942, 9903
2344 Description: Referencing freed requests leading to crash, memleaks with NFS.
2345 Details : We used to require that call to ll_revalidate_it was always
2346 followed by ll_lookup_it. Also with revalidate_special() it is
2347 possible to call ll_revalidate_it() twice for the same dentry
2348 even if first occurence returned success. This fix changes semantic
2349 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
2350 reference on a request referred from the intent.
2351 ll_intent_release() then releases such a request.
2354 Frequency : rare, normally benchmark loads only
2356 Description: unlinked inodes were kept in memory on the client
2357 Details : If a client is repeatedly creating and unlinking files it
2358 can accumulate a lot of stale inodes in the inode slab cache.
2359 If there is no other client load running this can cause the
2360 client node to run out of memory. Instead flush old inodes
2361 from client cache that have the same inode number as a new inode.
2364 Frequency : SLES9 2.6.5 kernel and long filenames only
2365 Bugzilla : 9969, 10379
2366 Description: utime reports stale NFS file handle
2367 Details : SLES9 uses out-of-dentry names in some cases, which confused
2368 the lustre dentry revalidation. Change it to always use the
2372 Frequency : rare, unless heavy write-truncate concurrency is continuous
2373 Bugzilla : 4180, 6984, 7171, 9963, 9331
2374 Description: OST becomes very slow and/or deadlocked during object unlink
2375 Details : filter_destroy() was holding onto the parent directory lock
2376 while truncating+unlinking objects. For very large objects this
2377 may block other threads for a long time and slow overall OST
2378 responsiveness. It may also be possible to get a lock ordering
2379 deadlock in this case, or run out of journal credits because of
2380 the combined truncate+unlink. Solution is to do object truncate
2381 first in one transaction without parent lock, and then do the
2382 final unlink in a new transaction with the parent lock. This
2383 reduces the lock hold time dramatically.
2386 Frequency : rare, 2.4 kernels only
2388 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
2389 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
2390 before unmounting their filesystem in order to avoid deadlock.
2391 The kernel_locked() function in 2.4 kernels only checks whether
2392 the kernel lock is held, not whether it is this process that is
2393 holding it as 2.6 kernels do.
2398 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
2399 Details : The client ptlrpc code may be trying to reconnect to a down
2400 server before a previous connection attempt has timed out.
2401 Increase the reconnect interval to be longer than the connection
2402 timeout interval to avoid sending duplicate connections to
2406 Frequency : echo_client brw_test command
2408 Description: fix echo_client to work with OST preallocated code
2409 Details : OST preallocation code (5137) didn't take echo_client IO path
2410 into account: echo_client calls filter methods outside of any
2411 OST thread and, hence, there is no per-thread preallocated
2412 pages and buffers to use. Solution: hijack pga pages for IO. As
2413 a byproduct, this avoids unnecessary data copying.
2417 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
2418 Description: Client can oops in mdc_commit_close() after open replay
2419 Details : It was possible for the MDS to return an open request with no
2420 transaction number in mds_finish_transno() if the client was
2421 evicted, but without actually returning an error. Clients
2422 would later try to replay that open and may trip an assertion
2423 Simplify the client close codepath, and always return an error
2424 from the MDS in case the open is not successful.
2427 Frequency : rare, 2.6 OSTs only
2429 Description: OST may deadlock under high load on fragmented files
2430 Details : If there was a heavy load and highly-fragmented OST filesystems
2431 it was possible to have all the OST threads deadlock waiting on
2432 allocation of biovecs, because the biovecs were not released
2433 until the entire RPC IO was completed. Instead, release biovecs
2434 as soon as they are complete to ensure forward IO progress.
2436 Severity : enhancement
2438 Description: Support for specifying external journal device at mount
2439 Details : If an OST or MDS device is formatted with an external journal
2440 device, this device major/minor is stored in the ext3 superblock
2441 and may not be valid for failover. Allow detecting and
2442 specifying the external journal at mount time.
2447 Description: Mounting an MDS with pending unlinked files may cause oops
2448 Details : target_finish_recovery() calls mds_postrecov() which returned
2449 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
2450 considers this an error and immediately begins cleaning up the
2451 lov, just after starting the mds_lov process
2453 Severity : enhancement
2455 Description: Implement 'lfs df' to report actual free space on per-OST basis
2456 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
2457 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
2458 usage of objects; '-h' to report in human readable format.
2460 ------------------------------------------------------------------------------
2462 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
2469 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
2470 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
2471 at startup during orphan unlinking. Instead, skip buddy update
2472 before setup, as it will be regenerated after recovery is complete.
2477 Description: If an OST is inactive, its locks might reference stale inodes.
2478 Details : lov_change_cbdata() must iterate over all namespaces, even if
2479 they are inactive to clear inode references from the lock.
2481 Severity : enhancement
2482 Frequency : occasional, if non-standard max_dirty_mb used
2484 Description: Client will block write RPCs if not enough grant
2485 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
2486 then the client will block writes while waiting for another RPC
2487 to complete instead of consuming its dirty limit. With change
2488 we get improved performance when max_dirty_mb is small.
2490 Severity : enhancement
2491 Bugzilla : 3389, 6253
2492 Description: Add support for supplementary groups on the MDS.
2493 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
2494 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
2495 lookups for user supplementary groups into a cache.
2499 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
2500 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
2501 for liblustre O_EXCL is enforced by MDS.
2505 Description: readdir never returns NULL in liblustre.
2506 Details : Corrected llu_iop_getdirentries logic, to return offset of next
2507 dentry in struct dirent.
2511 Frequency : liblustre only, depends on application IO pattern
2512 Description: liblustre clients evicted if not contacting servers
2513 Details : Don't put liblustre clients into the ping_evictor list, so
2514 they will not be evicted by the pinger ever.
2516 Severity : enhancement
2518 Description: Add ability to evict clients by NID from MDS.
2519 Details : By echoing "nid:$NID" string into
2520 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
2521 $NID would be instantly evicted from this MDS and from all active
2522 OSTs connected to it.
2526 Description: Do not query file size twice, somewhat slowing stat(2) calls.
2527 Details : lookup_it_finish() used to query file size from OSTs that was not
2532 Description: service threads change working directory to that of init
2533 Details : Starting lustre service threads may pin the working directory
2534 of the parent thread, making that filesystem busy. Threads
2535 now change to the working directory of init to avoid this.
2539 Frequency : during shutdown only
2540 Description: shutdown with a failed MDS or OST can cause unmount to hang
2541 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
2546 Frequency : 2.6 only
2547 Description: chmod/chown may include an extra supplementary group
2548 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
2549 supplementary group and if none is specified this is used.
2552 Bugzilla : 5479 (6816)
2554 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
2555 Details : If lookup is in progress on a file that is unlinked we might try
2556 to revalidate the inode and fail in revalidate after lookup is
2557 complete and ll_file_open() enqueues the open again but
2558 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
2561 Frequency : always, if lconf --abort_recovery used
2563 Description: lconf --abort_recovery fails with 'Operation not supported'
2564 Details : lconf was attempting to abort recovery on the MDT device and not
2567 ------------------------------------------------------------------------------
2569 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
2574 Frequency : rare (only unsupported configurations with a node running as an
2576 Bugzilla : 6514, 5137
2577 Description: Mounting a Lustre file system on a node running as an OST could
2579 Details : OSTs now preallocates memory needed to write out data at
2580 startup, instead of when needed, to avoid having to
2581 allocate memory in possibly low memory situations.
2582 Specifically, if the file system is mounted on on OST,
2583 memory pressure could force it to try to write out data,
2584 which it needed to allocate memory to do. Due to the low
2585 memory, it would be unable to do so and the node would
2586 become unresponsive.
2588 Severity : enhancement
2590 Description: Addition of lconf --service command line option
2591 Details : lconf now accepts a '--service <arg>' option, which is
2592 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
2594 Severity : enhancement
2596 Description: Failover mode is now the default for OSTs.
2597 Details : By default, OSTs will now run in failover mode. To return to
2598 the old behaviour, add '--failout' to the lmc line for OSTs.
2600 Severity : enhancement
2602 Description: Health checks are now provided for MDS and OSTs
2603 Details : Additional detailed health check information on MSD and OSTs
2604 is now provided through the procfs health_check value.
2607 Frequency : occasional, depends on IO load
2609 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
2610 after numerous create/delete cycles
2611 Details : The ext3 inode allocation policy would not allocate new inodes
2612 very well on the OSTs because there are no new directories
2613 being created. Instead we look for groups with free space if
2614 the parent directories are nearly full.
2619 Description: Network or server problems during mount may cause partially
2620 mounted clients instead of returning an error.
2621 Details : The config llog parsing code may overwrite the error return
2622 code during mount error handling, returning success instead
2628 Description: MDS can fail to allocate large reply buffers
2629 Details : After long uptimes the MDS can fail to allocate large reply
2630 buffers (e.g. zconf client mount config records) due to memory
2631 fragmentation or consumption by the buffer cache. Preallocate
2632 some large reply buffers so that these replies can be sent even
2633 under memory pressure.
2637 Frequency : rare (liblustre)
2638 Description: fsx running with liblustre complained that using truncate() to
2639 extend the file doesn't work. This patch corrects that issue.
2640 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
2641 ATTR_SIZE and lsm use in llu_setattr_raw.
2645 Frequency : rare, only 2.6 kernels
2646 Description: Unusual file access patterns on the MDS may result in inode
2647 data being lost in very rare circumstances.
2648 Details : Bad interaction between the ea-in-inode patch and the "no-read"
2649 code in the 2.6 kernel caused the inode and/or EA data not to
2650 be read from disk, causing single-file corruption.
2654 Frequency : rare, only 2.6 filesystems using extents
2655 Description: Heavy concurrent write and delete load may cause data corruption.
2656 Details : It was possible under high-load situations to have an extent
2657 metadata block in the block device cache from a just-unlinked
2658 file overwrite a newly-allocated data block. We now unmap any
2659 metadata buffers that alias just-allocated data blocks.
2663 Frequency : filesystems with default stripe_count larger than 77
2664 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
2665 Details : lconf specifies an inode size of 4096 bytes when the default
2666 stripe_count is larger than 77. This conflicts with the default
2667 inode density of 1 per 4096 bytes. Allocate smaller inodes in
2668 this case to avoid pinning too much memory for large EAs.
2670 ------------------------------------------------------------------------------
2672 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
2677 Frequency : rare (extremely heavy IO load with hundreds of clients)
2679 Description: Client is evicted, gets IO error writing to file
2680 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
2681 caused clients to be evicted for AST timeouts. The fixes in
2682 bug 5192 mean we no longer need to have such short AST timeouts
2683 so ldlm_timeout has been increased.
2686 Frequency : occasional during --force or --failover shutdown under load
2687 Bugzilla : 5949, 4834
2688 Description: Server oops/LBUG if stopped with --force or --failover under load
2689 Details : a collection of import/export refcount and cleanup ordering
2690 issues fixed for safer force cleanup
2693 Frequency : only filesystems larger than 120 OSTs
2694 Bugzilla : 5990, 6223
2695 Description: lfs getstripe would oops on a very large filesystem
2696 Details : lov_getconfig used kfree on vmalloc'd memory
2699 Frequency : only filesystems exporting via NFS to Solaris 10 clients
2700 Bugzilla : 6242, 6243
2701 Description: reading from files that had been truncated to a non-zero size
2702 but never opened returned no data
2703 Details : ll_file_read() reads zeros from no-object files to EOF
2708 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
2709 Details : There's little harm in aborting MDS/OSS recovery and letting it
2710 try again, so I removed the LASSERT and return an error instead.
2712 Severity : enhancement
2714 Description: New debugging infrastructure for tracking down data corruption
2715 Details : The I/O checksum code was replaced to: (a) control it at runtime,
2716 (b) cover more of the client-side code path, and (c) try to narrow
2717 down where problems occurred
2721 Bugzilla : 3819, 4364, 4397, 6313
2722 Description: Racing close and eviction MDS could cause assertion in mds_close
2723 Details : It was possible to get multiple mfd references during close and
2724 client eviction, leading to one thread referencing a freed mfd.
2726 Severity: : enhancement
2727 Bugzilla : 3262, 6359
2728 Description: Attempts to reconnect to servers are now more aggressive.
2729 Details : This builds on the enhanced upcall-less recovery that was added
2730 in 1.4.2. When trying to reconnect to servers, clients will
2731 now try each server in the failover group every 10 seconds. By
2732 default, clients would previously try one server every 25 seconds.
2737 Description: After recovery, certain operations trigger a failed
2738 assertion on a client.
2739 Details : Failing over an mds, using lconf -d --failover, while a
2740 client was doing a readdir() call would cause the client to
2741 LBUG after recovery completed and the readdir() was resent.
2743 Severity : enhancement
2745 Description: Default groups are now added by lconf
2746 Details : You can now run lconf --group <servicename> without having to
2747 manually add groups with lmc.
2750 Frequency : occasional
2752 Description: Nodes with an elan id of 0 trigger a failed assertion
2755 Frequency : always when accessing e.g. tty/console device nodes
2757 Description: tty and some other devices nodes cannot be used on lustre
2758 Details : file's private_data field is used by device data and lustre
2759 values in there got lost. New field was added to struct file to
2760 store fs-specific private data.
2763 Frequency : when exporting Lustre via NFS
2765 Description: NFSD failed occasionally when looking up a path component
2766 Details : NFSD is looking up ".." which was broken in ext3 directories
2767 that had grown large enough to become hashed.
2770 Frequency : Clusters with multiple interfaces not on the same subnet
2772 Description: Nodes will repeatedly try to reconnect to an interface which it
2773 cannot reach and report an error to the log.
2774 Details : Extra peer list entries will be created by lconf with some peers
2775 unreachable. lconf now validates the peer before adding it.
2778 Frequency : Only if a default stripe is set on the filesystem root.
2780 Description: Setting a default stripe on the filesystem root prevented the
2781 filesystem from being remounted.
2782 Details : The client was sending extra request flags in the root getattr
2783 request and did not allocate a reply buffer for the dir EA.
2786 Frequency : occasional, higher if lots of files are accessed by one client
2787 Bugzilla : 6159, 6097
2788 Description: Client trips assertion regarding lsm mismatch/magic
2789 Details : While revalidating inodes the VFS looks up inodes with ifind()
2790 and in rare cases can find an inode that is being freed.
2791 The ll_test_inode() code will free the lsm during ifind()
2792 when it finds an existing inode and then the VFS later attaches
2793 this free lsm to a new inode.
2797 Bugzilla : 6422, 7030
2798 Description: MDS deadlock between mkdir and client eviction
2799 Details : Creating a new file via mkdir or mknod (starting a transaction
2800 and getting the ns lock) can deadlock with client eviction
2801 (gets ns lock and trying to finish a synchronous transaction).
2804 Frequency : occasional
2805 Description: While starting a server, the fsfilt_ext3 module could not be
2807 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
2808 kernels. Previously, lconf would still use the ext3 name
2809 when trying to load modules. Now, it will correctly use
2810 ext3 on 2.4 and ldiskfs on 2.6.
2812 Severity : enhancement
2813 Description: The default stripe count has been changed to 1
2814 Details : The interpretation of the default stripe count (0, to lfs
2815 or lmc) has been changed to mean striping across a single
2816 OST, rather than all available. For general usage we have
2817 found a stripe count of 1 or 2 works best.
2819 Severity : enhancement
2820 Description: Add support for compiling against Cray portals.
2821 Details : Conditional compiling for some areas that are different
2825 Frequency : occasional
2826 Bugzilla : 6409, 6834
2827 Description: Creating files with an explicit stripe count may lead to
2828 a failed assertion on the MDS
2829 Details : If some OSTs are full or unavailable, creating files may
2830 trigger a failed assertion on the MDS. Now, Lustre will
2831 try to use other servers or return an error to the
2835 Frequency : occasional
2837 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
2838 caused lock timeout during readahead (since 1.4.2).
2839 Details : Processes doing readahead might match a lock that hasn't been
2840 granted yet if there are overlapping and conflicting lock
2841 requests. The readahead process waits on ungranted lock
2842 (original lock is CBPENDING), while OST waits for that process
2843 to cancel CBPENDING read lock and eventually evicts client.
2845 Severity : enhancement
2847 Description: Initial enabling of flock support for clients
2848 Details : Implements fcntl advisory locking and file status functions.
2849 This feature is provided as an optional mount flag (default
2850 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
2851 locking are implemented yet, and those that are are not guaranteed
2852 to be completely correct in production environments.
2853 mount -t lustre -o [flock|noflock] ...
2856 Frequency : occasional
2858 Description: OSTs running 2.4 kernels but with extents enabled might trip an
2859 assertion in the ext3 JBD (journaling) layer.
2860 Details : The b_committed_data struct is protected by the big kernel lock
2861 in 2.4 kernels, serializing journal_commit_transaction() and
2862 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
2863 access to this struct. In 2.6 kernels there is finer grained
2864 locking to improve SMP performance of the JBD layer.
2868 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
2873 Description: merge and cleanup kernel patches.
2876 -----------------------------------------------------------------------------
2878 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
2880 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
2881 versions of Lustre. Please update all servers and clients to
2882 version 1.4.2 or later at the same time. You must also run
2883 "lconf --write-conf {config}.xml" on the MDS while it is stopped
2884 to update the configuration logs.
2886 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
2887 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
2888 - swab llog records of type '0' so we get proper header size/idx (5861)
2889 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
2890 - fix rename of one directory over another leaking an inode (5953)
2891 - avoid SetPageDirty on 2.6 (5981)
2892 - don't re-add just-being-destroyed locks to the waiting list (5653)
2893 - when creating new directories, inherit the parent's custom
2894 striping settings if present parent (3048)
2895 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
2896 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
2897 - don't hold client locks on temporary worklist from l_lru (5666)
2898 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
2899 - automatically evict dead clients (5921)
2900 - Update file size properly in create+truncate+fstat case (6196)
2901 - Do not unhash mountpoint dentries, do not allow removal of
2903 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
2904 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
2905 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
2906 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
2907 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
2908 - Correctly handle reads of files with no objects (6243)
2909 - lctl recover will also mark a device active if deactivate used (5933)
2911 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
2912 - allow --write-conf on an MDS with different nettype than client (5619)
2913 - don't write config llogs to MDS for mounts not from that MDS (5617)
2914 - lconf should create multiple TCP connections from a client (5201)
2915 - init scripts are now turned off by default; run chkconfig --on
2916 lustre and chkconfig --on lustrefs to use them
2917 - upcalls are no longer needed for clients to recover to failover
2919 - add --abort-recovery option to lconf to abort recovery on device
2921 - add support for an arbitrary number of OSTs (3026)
2922 - Quota support protocol changes.
2923 - forward compatibility changes to wire structs (6007)
2924 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
2925 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
2926 - improved "lustre status" script
2927 - initialize blocksize for non-regular files (6062)
2928 - added --disable-server and --disable-client configure options (5782)
2929 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
2930 - Vanilla 2.4.29 support
2931 - increase maximum number of obd devices to 520 (6242)
2932 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
2933 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
2934 SLES 9 2.6.5 kernels
2935 - limit stripes per file to 160 (the maximum EA size) (6093)
2937 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
2940 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
2941 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
2942 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
2943 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
2944 - small ext3 extents cleanups and fixes (5733)
2945 - improved mballoc code, several small races and bugs fixed (5733, 5638)
2946 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
2947 - avoid needless client->OST connect, fix handle mismatch (5317)
2948 - fix DLM error path that led to out-of-sync client, long delays (5779)
2949 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
2950 - fix several locking issues related to i_size (5492,5624,5654,5672)
2951 - don't move pending lock onto export if it is already evicted (5683)
2952 - fix kernel oops when creating .foo in unlinked directory (5548)
2953 - fix deadlock in obdfilter statistics vs. object create (5811)
2954 - use time_{before,after} to avoid timer jiffies wrap (5882)
2955 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
2956 - Do not leak request if server was not able to process it (5154)
2957 - If mds_open unable to find parent dir, make that negative lookup(5154)
2958 - don't create new directories with extent-mapping (5909, 5936)
2960 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
2961 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
2962 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
2963 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
2964 - support for RHEL4 kernel on i686 (5773)
2965 - provide error messages when incompatible logs are encountered (5898)
2967 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
2968 * version 1.4.0.10 (1.4.1 release candidate 1)
2970 - don't keep a lock reference when lock is not granted (4238)
2971 - unsafe list practices (rarely) led to infinite eviction loop (4908)
2972 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
2973 - drop import inflight refcount on signal_completed_replay error (5255)
2974 - unlock page after async write error during send (3677)
2975 - handle missing objects in filter_preprw_read properly (5265)
2976 - no transno return for symlink open, don't save no-trasno open (3440)
2977 - don't try to complete elan receive that already failed (4012)
2978 - free RPC server reply state on error (5406)
2979 - clean up thread from ptlrpc_start_thread() on error (5160)
2980 - readahead could read extra page into cache that wasn't ejected (5388)
2981 - prevent races in class_attach/setup/cleanup/detach (5260)
2982 - don't dereference de->d_inode after l_dput of de (5458)
2983 - use "int" for stripe value returned from lock_to_stripe (5544)
2984 - mballoc allocation and error-checking fixes in 2.6 (5504)
2985 - block device patches to fix I/O request sizes in 2.6 (5482)
2986 - look up hostnames for IB nals (5602)
2987 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
2988 - don't start multiple acceptors for the same port (5277)
2989 - fix incorrect LASSERT in mds_getattr_name (5635)
2990 - export a proc file for general "ping" checking (5628)
2991 - fix "lfs check" to not block when the MDS is down (5628)
2993 - service request history (4965)
2994 - put {ll,lov,osc}_async_page structs in a single slab (4699)
2995 - create an "evict_client" /proc entry on OSTs, like the MDS has
2996 - fix mount usage message, return errors per mount(8) (5168)
2997 - change grep [] to grep "[]" in tests so they work in more UMLs
2998 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
2999 - remove ancient LOV_MAGIC_V0 EA support (5047)
3000 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
3001 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
3002 - allow readahead allocations to fail when low on memory (5383)
3003 - mmap locking landed again, after considerable improvement (2828)
3004 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
3006 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
3009 - send OST transaction number in read/write reply to free req (4966)
3010 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3011 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3012 - the watchdog thread now runs as interruptible (5246)
3013 - flock/lockf fixes (but it's still disabled, pending 5135)
3014 - don't use EXT3 constants in llite code (5094)
3015 - memory shortage at startup could cause assertion (5176)
3017 - reorganization of lov code
3018 - single portals codebase
3020 - add extents/mballoc support (5025)
3021 - direct I/O reads in the obdfilter (4048)
3022 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
3024 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3027 - send OST transaction number in read/write reply to free req (4966)
3028 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3029 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3030 - the watchdog thread now runs as interruptible (5246)
3031 - handle missing objects in filter_preprw_read properly (5265)
3032 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3033 - drop import inflight refcount on signal_completed_replay error (5255)
3034 - unlock page after async write error during send (3677)
3035 - return original error code on reconstructed replies (3761)
3036 - no transno return for symlink open, don't save no-trasno open (3440)
3038 - add pid to ldlm debugging output (4922)
3039 - bump the watchdog timeouts -- we can't handle 30sec yet
3040 - extra debugging for orphan dentry/inode bug (5259)
3042 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
3045 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
3046 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
3047 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
3048 - fix NULL dereference in /proc/sys/portals/routes (4827)
3049 - allow failed mdc_close() operations to be interrupted (4561)
3050 - stop precreate on OST before MDS would time out on it (4778)
3051 - don't send partial-page writes before EOF from client (4410)
3052 - discard client grant for sub-page writes on large-page clients (4520)
3053 - don't free dentries not owned by NFS code, check generation (4806)
3054 - fix lsm leak if mds_create_objects() fails (4801)
3055 - limit debug_daemon file size, always print CERROR messages (4789)
3056 - use transno after validating reply (3892)
3057 - process timed out requests if import state changes (3754)
3058 - update mtime on OST during writes, return in glimpse (4829)
3059 - add mkfsoptions to LDAP (4679)
3060 - use ->max_readahead method instead of zapping global ra (5039)
3061 - don't interrupt __l_wait_event() during strace
3063 - add software watchdogs to catch hung threads quickly (4941)
3064 - make lustrefs init script start after nfs is mounted
3065 - fix CWARN/ERROR duplication (4930)
3066 - return async write errors to application if possible (2248)
3067 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
3068 - print NAL number in %x format (4645)
3069 - update barely-supported suse-2.4.21-171 series (4842)
3070 - support for sles 9 %post scripts
3071 - support for building 2.6 kernel-source packages
3072 - support for sles km_* packages
3074 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
3077 - ignore -ENOENT errors in osc_destroy (3639)
3078 - notify osc create thread that OSC is being cleaned up (4600)
3079 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
3080 - reconstruct ost_handle() like mds_handle() (4657)
3081 - create a new thread to do import eviction to avoid deadlock (3969)
3082 - let lconf resolve symlinked-to devices (4629)
3083 - don't unlink "objects" from directory with default EA (4554)
3084 - hold socknal file ref over connect in case target is down (4394)
3085 - allow more than 32000 subdirectories in a single directory (3244)
3086 - fix blocks count for O_DIRECT writes (3751)
3087 - OST returns ENOSPC from object create when no space left (4539)
3088 - don't send truncate RPC if file size isn't changing (4410)
3089 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
3090 - bind to privileged port in socknal and tcpnal (3689)
3092 - rate limit CERROR/CWARN console message to avoid overload (4519)
3093 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
3094 - basic mmap support (3918)
3095 - kernel patch series update from b1_4 (4711)
3097 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
3100 - avoid crash during MDS cleanup with OST shut down (2775)
3101 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
3102 - don't use bad inodes on the MDS (3744)
3103 - dynamic object preallocation to improve recovery speed (4236)
3104 - don't hold spinlock over lock dumping or change debug flags (4401)
3105 - don't zero obd_dev when it is force cleaned (3651)
3106 - print grants to console if they go negative (4431)
3107 - "lctl deactivate" will stop automatic recovery attempts (3406)
3108 - look for existing locks in ldlm_handle_enqueue() (3764)
3109 - don't resolve lock handle twice in recovery avoiding race (4401)
3110 - revalidate should check working dir is a directory (4134)
3112 - don't always mark "slow" obdfilter messages as errors (4418)
3114 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
3117 - don't close LustreDB during write_conf until it is done (3860)
3118 - fix typo in lconf for_each_profile (3821)
3119 - allow dumping logs from multiple threads at one time (3820)
3120 - don't allow multiple threads in OSC recovery (3812)
3121 - fix debug_size parameters (3864)
3122 - fix mds_postrecov to initialize import for llog ctxt (3121)
3123 - replace config semaphore with spinlock (3306)
3124 - be sure to send a reply for a CANCEL rpc with bad export (3863)
3125 - don't allow enqueue to complete on a destroyed export (3822)
3126 - down write_lock before checking llog header bitmap (3825)
3127 - recover from lock replay timeout (3764)
3128 - up llog sem before sending rpc (3652)
3129 - reduce ns lock hold times when setting kms (3267)
3130 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
3131 - fix NULL deref and obd_dev leak on setup error (3312)
3132 - replace some LBUG about llog ops with error handling (3841)
3133 - don't match INVALID dentries from d_lookup and spin (3784)
3134 - hold dcache_lock while marking dentries INVALID and hashing (4255)
3135 - fix invalid assertion in ptlrpc_set_wait (3880)
3137 - add libwrap support for the TCP acceptor (3996)
3138 - add /proc/sys/portals/routes for non-root route listing (3994)
3139 - allow setting MDS UUID in .xml (2580)
3140 - print the stack of a process that LBUGs (4228)
3142 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
3145 - don't cleanup request in ll_file_open() on failed MDS open (3430)
3146 - make sure to unset replay flag from failed open requests (3440)
3147 - if default stripe count is 0, use OST count for inode size (3636)
3148 - update parent mtime/ctime on client for create/unlink (2611)
3149 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
3150 - free recovery state on server during a forced cleanup (3571)
3151 - unregister_reply for resent reqs (3063)
3152 - loop back devices mounting and status check on 2.6 (3563)
3153 - fix resource-creation race that can provoke i_size == 0 (3513)
3154 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
3155 - more debugging for page-accounting assertion (3746)
3156 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
3157 - avoid deadlock after precreation failure (3758)
3158 - fix race and lock order deadlock in orphan handling (3450, 3750)
3159 - add validity checks when grabbing inodes from l_ast_data (3599)
3161 - add /proc/.../recovery_status to obdfilter (3428)
3162 - lightweight CDEBUG infrastructure, debug daemon (3668)
3163 - change default OSC RPC parameters to be better on small clusters
3164 - turn off OST read cache for files smaller than 32MB
3165 - install man pages and include them in rpms (3100)
3166 - add new init script for (un)mounting lustre filesystems (2593)
3167 - run chkconfig in %post for init scripts (3701)
3168 - drop scimac NAL (unmaintained)
3170 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
3173 - clean kiobufs before and after use (3485)
3174 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
3175 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
3176 - change init script to fail more clearly if not run as root (1528)
3177 - allow clients to reconnect during replay (1742)
3178 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
3179 - don't do DNS lookups on NIDs too small for IP addresses (3442)
3180 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
3181 - fix cond_resched (3554)
3182 - only evict unfinished clients after recovery (3515)
3183 - allow bulk resend, prevent data loss (3570)
3184 - dynamic ptlrpc request buffer allocation (2102)
3185 - don't allow unlinking open directory if it isn't empty (2904)
3186 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
3187 - remove extraneous obd dereference causing LASSERT failure (3334)
3188 - don't use get_cycles() when creating temp. files on the mds (3156)
3189 - hold i_sem when setting i_size in ll_extent_lock() (3564)
3190 - handle EEXIST for set-stripe, set proper directory name (3336)
3192 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
3193 - fix ksocknal_fmb_callback() error messages (2918)
3195 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
3198 - don't copy lvb into (possibly NULL) reply on error (2983)
3199 - don't deref dentry after dput, don't free lvb on error (2922)
3200 - use the kms to determine writeback rpc length (2947)
3201 - increment oti_logcookies when osc is inactive (2948)
3202 - update client's i_blocks count via lvb messages (2543)
3203 - handle intent open/close of special files properly (1557)
3204 - mount MDS with errors=remount-ro, like obdfilter (2009)
3205 - initialize lock handle to avoid ASSERT on error cleanup (3057)
3206 - don't use cancelling-locks' kms values (2947)
3207 - use highest lock extent for kms, not last one (2925)
3208 - don't dereference ERR_PTR() dentry in error handling path (3107)
3209 - fix thread race in portals_debug_dumplog() (3122)
3210 - create lprocfs device entries at setup instead of at attach (1519)
3211 - common AST error handler, don't evict client on completion race (3145)
3212 - zero nameidata in detach_mnt in 2.6 (3118)
3213 - verify d_inode after revalidate_special is valid in 2.6 (3116)
3214 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
3215 - initialize RPC timeout timer earlier for 2.6 (3219)
3216 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
3217 - print nal/nid for unknown nid (3258)
3218 - additional checks for oscc recovery before doing precreate (3284)
3219 - fix ll_extent_lock() error return code for 64-bit systems (3043)
3220 - don't crash in mdc_close for bad permissions on open (3285)
3221 - zero i_rdev for non-device files (3147)
3222 - clear page->private before handing to FS, better assertion (3119)
3223 - tune the read pipeline (3236)
3224 - fix incorrect decref of invalidated dentry (2350)
3225 - provide read-ahead stats and refine rpc in flight stats (3328)
3226 - don't hold journal transaction open across create RPC (3313)
3227 - update atime on MDS at close time (3265)
3228 - close LDAP connection when recovering to avoid server load (3315)
3229 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
3230 - don't leak open file on MDS after open resend (3325)
3231 - serialize filter_precreate and filter_destroy_precreated (3329)
3232 - loop device shouldn't call sync_dev() for nul device (3092)
3233 - clear page cache after eviction (2766)
3234 - resynchronize MDS->OST in background (2824)
3235 - refuse to mount the same filesystem twice on same mountpoint (3394)
3236 - allow llmount to create routes for mounting behind routers (3320)
3237 - push lock cancellation to blocking thread for glimpse ASTs (3409)
3238 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
3239 - fix rare problem with rename on htree directories (3417)
3241 - allow default OST striping configuration per directory (1414)
3242 - fix compilation for qswnal for 2.6 kernels (3125)
3243 - increase maximum number of MDS request buffers for large systems
3244 - change liblustreapi to be useful for external progs like lfsck (3098)
3245 - increase local configuration timeout for slow disks (3353)
3246 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
3248 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3251 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
3252 - don't overwrite extent policy data in reply if lock was blocked (2901)
3253 - drop filter export grants atomically with removal from device (2663)
3254 - del obd_self_export from work_list in class_disconnect_exports (2908)
3255 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
3256 - swab reply message in mdc_close, other PPC fixes (2464)
3257 - fix destroying of named logs (2325)
3258 - overwrite old logs when running lconf --write_conf (2264)
3259 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
3260 - fix race in target_handle_connect (2898)
3261 - mds_reint_create() should take same inode create lock (2926)
3262 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
3263 - don't close files for self_export to avoid uninitialized obd (2936)
3264 - allow MDS with the same name as client node (2939)
3265 - hold dentry reference for closed log files for unlink (2325)
3266 - reserve space for all logs during transactions (2059)
3267 - don't evict page beyond end of stripe extent (2925)
3268 - don't oops on a deleted current working directory (2399)
3269 - handle hard links to targets without a parent properly (2517)
3270 - don't dereference NULL lock when racing during eviction (2867)
3271 - don't grow lock extents when lots of conflicting locks (2919)
3273 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
3276 - account for cache space usage on clients to avoid data loss (974)
3277 - lfsck support in lustre kernel code (2349)
3278 - reduce journal credits needed for BRW writes (2370)
3279 - orphan handling to avoid losing space on client/server crashes
3280 - ptlrpcd can be blocked, stopping ALL progress (2477)
3281 - use lock value blocks to assist in proper KMS, faster stat (1021)
3282 - takes i_sem instead of DLM locks internally on obdfilter (2720)
3283 - recovery for initial connections (2355)
3284 - fixes for mds_cleanup_orphans (1934)
3285 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
3286 - block all file creations until orphan recovery completes (1901)
3287 - client remove rq_connection from request struct (2423)
3288 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
3289 - recovery timer race (2670)
3290 - mdc_close recovey bug (2532)
3291 - ptlrpc cleanup bug (2710)
3292 - mds timeout on local locks (2588)
3293 - namespace lock held during RPCs (2431)
3294 - handle interrupted sync write properly (2503)
3295 - don't try to handle a message that hasn't been replied to (2699)
3296 - client assert failure during cleanup after abort recovery (2701)
3297 - leak mdc device after failed mount (2712)
3298 - ptlrpc_check_set allows timedout requests to complete (2714)
3299 - wait for inflight reqs when ptlrpcd finishes (2710)
3300 - make sure unregistered services are removed from the srv_list
3301 - reset bulk XID's when resending them (caught by 1138 test)
3302 - unregister_bulk after timeout
3303 - fix lconf error (2694)
3304 - handle write after unfinished setstripe, stripe-only getstripe (2388)
3305 - readahead locks pages, leaves pending causing memory pressure (2673)
3306 - increase OST request buffers to 4096 on large machines (2729)
3307 - fix up permission of existing directories in simple_mkdir (2661)
3308 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
3309 - don't assign transno to errored transactions (2742)
3310 - don't delete objects on OST if given a bogus objid from MDS (2751)
3311 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
3312 - if rq_no_resend, then timeout request after recovery (2432)
3313 - fix MDS llog_logid record size, 64-bit array alignment (2733)
3314 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
3315 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
3316 - MDS recovery shouldn't delete objects that it has given out (2730)
3317 - if enqueue arrives after completion, don't clobber LVB (2819)
3318 - don't unlock pages twice when trigger_group_io returns error (2814)
3319 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
3320 - don't write pages to disk if there was an error (1450)
3321 - don't ping imports that have recovery disabled (2676)
3322 - take buffered bytes into account when balancing socknal conn (2817)
3323 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
3324 - reconnect unlink llog connection after MDS reconnects to OST (2816)
3325 - remove little-endian swabbing of llog records (1987)
3326 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
3327 - retry reposting request buffers if they fail (1191)
3328 - grow extent at grant time to avoid granting a revoked lock (2809)
3329 - lock revoke doesn't evict page if covered by a second lock (2765)
3330 - disable VM readahead to avoid reading outside lock extents (2805)
3332 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
3333 - updated kernel patches for hp-2.4.20 kernel (2681)
3335 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
3338 - fix truncated write corruption (2366)
3339 - fix for failed assertion in iopen_connect_dentry (1792,2517)
3341 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
3342 - ensure len(uuid) < 37 in lmc (1171)
3343 - fix ia64 OOPS in llog_test (2255)
3344 - zero end of page at obdfilter for partial page writes (2648)
3345 - don't leave stale dentries around after renames (bug 2428)
3346 - fix timeouts when evicting a client with a single lock held (2642)
3347 - set deadline for the initial HELLO message to drain (2634)
3348 - print out dotted-quad IP addresses in the socknal (2302)
3350 - additional debugging for MDS client eviction problem (2443)
3351 - fix mkfsoptions support for osts (2603, 2604)
3353 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
3356 - add series for the vanilla 2.6.0 kernel
3357 - add series for the vanilla 2.4.24 kernel
3358 - add series for a cray x86/64 UL kernel drop
3359 - fix xattr patches for the vanilla 2.4.19 series
3361 - generate true UUIDs in lmc (1171)
3362 - have portals stack dumping break in UML (2466)
3363 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
3364 - allocate with _NOFS in ldlm to avoid deadlock (1933)
3365 - wake callback waiting threads on client eviction (2460)
3366 - Add --ptldebug and --subsystem to lmc (1719)
3367 - update assertion to allow safe interrupt allocation
3368 - set rq_no_resend for cancel requests (2432)
3369 - recalculate ptlrpcd timeout after resend (2494)
3370 - call vfs_rmdir when removing pending directories (2368)
3371 - fix renaming a file to itself (2429)
3372 - lmc creates a default one-stripe lov (2454)
3373 - expand procfs space to handle large clusters (2326)
3374 - increase UML stack to avoid overflow
3375 - update lconf's list of debug and subsystem masks
3376 - fix lfs find --obd (2510)
3377 - /proc tunable for disabling filter read caching (2591)
3378 - stop rpm packages from altering slapd.conf (2301)
3379 - disable nagle in the socknal under 0conf (2578)
3380 - choose mds inode size based on stripe count (2572)
3381 - fix kernel-source rpm problems (2516)
3383 - add --disable-doc to avoid pdf generation (2421)
3384 - update documentation, tests, type-os, comments
3385 - avoid format warnings on ia64
3386 - remove the TOE NAL
3387 - tiny code cleanups by removing unused fields
3389 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
3392 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
3393 - remove the most blatant lies from BUILDING file (2371)
3394 - change default debug level to reasonable production setting
3395 - reduce client side cache size to reduce cache flush time
3396 - reduce max RPCs in flight to avoid unnecessary file fragmentation
3397 - make TCP zerocopy and pinger support enabled by default (2476)
3398 - sync writes completed after process exits caused crashes (2319)
3399 - maintain correct mount count on the MDS (2356)
3400 - backout 1557, because 2316 wasn't really fixed
3401 - better file I/O statistics gathering in /proc
3402 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
3403 - another kernel patch to fix zero-copy TCP function export
3404 - don't take duplicate lock when processing re-sent getattr (2420)
3405 - lctl uses obd_self_export instead of creating new conn (2353)
3406 - MDS/OST recovery case which requires object creation asserted (2425)
3407 - move lfs from /usr/sbin to /usr/bin in packages
3408 - fix race between mds_client_add and mds_client_free (2417)
3409 - use kmalloc instead of slabs in portals (2430)
3410 - don't create duplicate records when a failover MDS is present (2442)
3411 - remove unnecessary mount age check (2332)
3412 - don't remove directory inodes from locks prematurely (2451)
3413 - don't break if MDS service name is the same as hostname (2103)
3414 - fix races in client write RPC generation when cache full (2482)
3416 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
3419 - remove now-unused request->rq_obd (278)
3420 - if an allocation fails, print out how much memory we've used (1933)
3421 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
3422 - add the "configurable stack size" patch to most series files (1256)
3423 - ability to write large log records, for 100+ OST configs (2306)
3424 - fix NULL deref when filter_prep fails (2314)
3425 - fix operator precedence error in filter_sync
3426 - dynamic allocation of socknal TX descriptors (2315)
3427 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
3428 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
3429 - ensure that CWARN messages in Portals always get to the syslog
3430 - __init/__exit are not for prototype decls (ldlm_init/exit)
3431 - x86-64 compile warning fixes
3432 - fix gateway LMC keyword conflict (2318)
3433 - fix MDS lock inversions in getattr/reint paths (1844)
3434 - fix a rare lock re-ordering bug, which caused deadlock (2322)
3435 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
3436 - DLM race condition prevented some lock evictions (2328)
3437 - ENOMEM detection and retry on socknal sends (2230)
3438 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
3439 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
3440 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
3441 - better error messages when a client is rejected during recovery (1505)
3442 - avoid cancelling locks which were never granted, after failure (2330)
3443 - fix i_sem/journal inversion in mds_client_add (2333)
3444 - fix truncate/getattr lock cycle deadlock (2334)
3445 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
3446 - fix two rare exit paths which could leak an l_lock() ref (2321)
3447 - fencepost error in MDS/OST orphan recovery (2226)
3448 - make log record alignment 8 bytes (1988)
3449 - lstripe now fails when requested offset > ost_count (2237)
3450 - ensure that all kernel series have a complete list.h (1607)
3451 - fix crashes in special-file operations (2316)
3452 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
3454 - allow configurable automake binary, for testing new versions
3455 - small update to the lfs documentation
3457 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
3459 * fix negative export reference count in fsfilt_sync (2312)
3461 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
3462 * release candidate 0.9.1
3464 - orphans are moved into the PENDING directory for possible recovery
3465 - replayed opens now open by fid for orphan/rename safety (1042)
3466 - last close of an orphan inode generates a transno (683)
3467 - chdir() and mount() now pin the directory entry (1020)
3468 - avoid CERROR in normal ll_setattr_raw() error case (1500)
3469 - discard very old requests without processing them (1502)
3470 - remove some common, well-understood CERRORs (1505)
3471 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
3472 - clear "grant" flags in OST replies until OST grant code lands (1644)
3473 - fix read performance by not clobbering i_blksize on client (1598)
3474 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
3475 - make LRU size a /proc tunable, clears locks when reduced (707)
3476 - fix some lprocfs rot that prevented ptlbd from loading (1732)
3477 - server locks take references on exports now (1558)
3478 - build fixes for 2.4.20-rh trees (1663)
3479 - return an error from lov_create if all OSCs are inactive (1751)
3480 - fix import levels when a reconnect happens without a timeout (1597)
3481 - exit early from mds_open if we get a lookup error (1749)
3482 - partial page read at EOF wouldn't wait for disk before sending (1642)
3483 - avoid NULL deref in obdfilter when reading page past EOF (1592)
3484 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
3485 - fix LBUG in ll_it_open_error with rc = -2 (1861)
3486 - write/truncate lock inversion (1639)
3487 - Don't auto-load obdclass, portals modules during cleanup (1495)
3488 - fix timestamps from jumping to "now" (1763)
3489 - extra journal assertions (1648)
3490 - add an extra multiunlink test (1771)
3491 - fix read_record/write_record API (1776)
3492 - fix leak of offset_extent, possible incorrect i_size later (1772)
3493 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
3494 - Debugging for the kqswnal_get_idle_tx problems (1820)
3495 - Allow recovery to be attempted multiple times (1536)
3496 - Write out MDS last_rcvd file after it is first created (1600)
3497 - Fix tx_descriptor leak in failed transmit situations (1827)
3498 - ext3 journaling fixes for assertion failure after IO error (1871)
3499 - class_export_put() on freed export after completion AST error (1896)
3500 - Fix revalidate looping in VFS (1322)
3501 - Don't access a freed export during MDS_REINT timeout (1521)
3502 - Add open-unlink recovery support on the MDS (1673,1764)
3503 - Return an error if no MDS data was read from last_rcvd (1946)
3504 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
3505 - Don't setup a disk device that doesn't match exported UUID (317)
3506 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
3507 - avoid committing NULL handle in force close
3508 - local.sh is now a one-stripe LOV configuration
3509 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
3510 - fix ext3 htree duplicate directory entry corruption (1516)
3511 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
3512 - update to new LOV EA format (2097)
3513 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
3515 2003-06-15 Phil Schwan <phil@clusterfs.com>
3518 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
3519 - per-import/export recovery handling (958, 931, 959)
3520 - multiple last-rcvd slots, for serving multiple FSes (949)
3521 - connections are again shared between multiple imp/exports (963, 964)
3522 - "umount -f" would hang if any requests needed to be sent (393, 978)
3523 - avoid pinning large req buffer by copying for queued messages (989)
3524 - add "uuid" to "lctl device" command to help upcalls (991)
3525 - "open" RPCs with transnos would confuse recovery counters (1037)
3526 - do proper endian conversion of all wire messages (288, 340, 891)
3527 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
3528 - call waiting locks callback from LDLM recovery thread (1127, 1151)
3529 - fix ptlrpc_connection leak in target_handle_connect (1174)
3530 - fix import refcounting bug in OST and MDS cleanup (1134)
3531 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
3532 - fix very unlikely obd_types race condition (501)
3533 - remove osc_open hack for echo_client (1187)
3534 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
3535 - a failure in read_inode2 leads to deadlock (1139)
3536 - cancel ack-locks as soon as transaction is committed (1072)
3537 - fix major leaks and crashes in the bulk I/O path (937, 1057)
3538 - make sure to commitrw after any preprw to avoid deadlock (1162)
3539 - failing to execute a file in a lustre FS would lock inode (1203)
3540 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
3541 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
3542 - obd_uuid2tgt would walk off the end of the list (1255)
3543 - on IA64 the osc would give portals incorrect bulk size (1258)
3544 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
3545 - fix lock inversion caused by new llite matching code (1282)
3546 - limit the number of dirty pages on a client to 10MB (1286)
3547 - timed out locks were not being corrected cancelled (1289)
3548 - fix O_DIRECT above 4GB on IA-32 (1292)
3549 * major user-visible changes
3550 - fail out/fail over policy now controlled by the upcall (993)
3552 - add OBD_PING to check server availability and failure (954)
3553 - lustre messages are now sent in sending host order (288, 340, 891)
3554 - add eadatalen to MDS getattr reply (340)
3555 - OST read replies may contain second buffer, with per-page status (593)
3557 2003-03-11 Phil Schwan <phil@clusterfs.com>
3560 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
3561 - failed open()s could cause deadlock; fixed (867, 869)
3562 - stop cancelling OST locks when files are closed (481)
3563 - overlapping XID spaces caused network corruption (851, 853)
3564 - fix unsafe fsfilt counter arithmetic; change to atomic_t
3565 - setattr_raw added, to do single-RPC, server-side setattrs
3566 - lmc/lconf syntax change for OST UUIDs
3567 - fix crashy race condition between ptlrpc_free_req and osc_close
3568 - don't use request in mdc_enqueue if we hit a timeout (889)
3569 - don't set the inode i_size for regular files from the MDS (896)
3570 - handle out of order completion AST (842)
3571 - don't LBUG if a lock request times out after receiving AST (913)
3572 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
3573 - if a bad lock AST arrives, send an error instead of dropping entirely
3574 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
3575 - fix leak in bulk IO when only partially completed (899, 900, 926)
3576 - fix O_DIRECT for ia64 (55)
3577 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
3578 - C-z after timeout could hang a process forever; fixed (977)
3580 - client-side I/O cache (678, 924, 929, 941, 970)
3582 - READPAGE and SETATTRs which don't take server-side locks get
3585 2003-02-11 Phil Schwan <phil@clusterfs.com>
3588 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
3589 - Fix fsfilt_extN_readpage() to read a full page of directory
3590 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
3591 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
3592 - Fix imbalanced LOV object allocation and out-of-bound access (469)
3593 - Most intent operations were removed, in favour of a new RPC mode
3594 that does a single RPC to the server and bypasses most of the VFS
3595 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
3596 - Aggressively cancel local locks on DLM servers
3597 - mds_reint_unlink sends EA to the client if it's the last nlink.
3598 client uses that EA to unlink OST objects.
3599 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
3600 - recursive symlinks were fixed (439)
3601 - fixed NULL deref in DEBUG_REQ
3602 - filter_update_lastobjid no longer calls sync, which annoyed extN
3603 - fixed multi-client small-writes to a single file problem (445)
3604 - fixed mtime updates during file writes (607)
3605 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
3606 - fixed bug in obd_brw_read/write() (under guise of testing 367)
3607 - fixed Linux OST size reporting problem (444, 656)
3608 - OST now updates object mtime with writes or setattr (607, 619)
3609 - client verifies file size before zeroing page past EOF (445)
3610 - OST now writes last allocated objid to disk with allocation (108)
3611 - LOV on echo now works (409)
3613 - mds_reint_unlink sends a new buffer, with the EA included. this
3614 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
3615 set if a regular file was being unlinked, and it was the last link
3616 - use PtlGet from the target for bulk writes (315)
3617 - OST now updates object mtime with writes or setattr (607, 619)
3618 - LDLM now has a grant-time callback to revalidate locked items, if
3620 - Many MDS operations were reorganized to combat race conditions
3622 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
3623 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
3625 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
3628 - Fully reactivate OST imports after reconnection (512, others)
3629 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
3630 - More graceful error handling for truncating on dead OST (515)
3631 - Don't error out unless we're actually accessing dead stripes (474)
3632 - Fix garbage sizes when stripes are missing (410)
3633 - LRU counters were broken, causing constant lock purge (433, 432)
3634 - garbage on read from stripes with failed OSTs (441)
3635 - mark OSCs as active before reconnecting during recovery (438)
3636 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
3637 - lfind did not preserve OST order in output (443)
3638 - symlinks cause hung clients, incorrect data (439)
3639 - stop dereferencing request after dropping refcount (457)
3640 - don't LASSERT(spin_is_locked) on non-SMP (455)
3641 - fixes for many rename() bugs
3642 - fstat didn't correctly synchronize attributes (399)
3643 - server must handle lock cancellation during blocking AST prep (487)
3644 - bulk descriptors were free()d too soon (511)
3645 - fix paths in lconf, which would load incorrect modules (451, 507)
3646 - fix confusing lconf 'host not found' error message (386)
3647 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
3648 - fix race condition in mdc_blocking_ast() for inode access (526)
3649 - fix lov_unpackmd() unpacking wrong number of stripes (537)
3650 - fix lov_set_osc_active() marking wrong OSC inactive (440)
3651 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
3652 - fix multiple writes of stripe MD to MDS (358, maybe 519)
3653 - fix lstripe in several ways (kernel side) (527)
3654 - fix request leak in ldlm_cli_enqueue (262)
3655 - incorrect OSC was marked inactive after OST failure
3656 - call mds_fs_cleanup before unmounting filesystem (524)
3657 - fix races between taking ns_lock and ldlm_lock_change_resource
3658 - fix races updating LOV export open file list
3659 - fix lov_enqueue error path, avoid decref-ing bad lock handle
3660 - fix recovery NULL deref in ldlm_cli_cancel_unused
3661 - fix some DLM races by using new hash table for lock handles (419)
3662 - permit the client to specify desired inodes, at replay
3663 - duplicate requests when we queue them for replay reintegration
3664 - fix last_rcvd offset calculation
3665 - sync after each recovered transaction, so we always make progress
3666 - never, not always, ERESTART requests without transnos
3667 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
3669 - skip replay if the MDS says that the client is already connected
3670 - don't check for a recovery-enabled export to match lctl's UUID
3671 - don't INC_USE_COUNT for phantom exports
3672 - don't crash when cleaning up phantom exports (567)
3673 - don't double-finish or set replay data for errored mdc_open requests
3674 - abort requests when they time out, so we don't get old replies
3675 - send/receive replies for AST messages again
3676 - if the client says that it doesn't have the lock, cancel it on the
3678 - if we timeout during I/O, don't try to cancel an in-use lock; instead
3679 mark it as destroyed, it will all work out when decref is called
3680 - fix module use counts (22, 581)
3682 - ASTs now expect a reply (server cancels lock on error reply)
3684 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
3687 - fix many simultaneous client startup (392)
3688 - fix dentry->d_it clobbering
3689 - credentials weren't being shipped for readdir/getattr operations
3690 - remove invalid assertions triggered during some concurrent MD
3692 - proper Lustre versions added (336, 389)
3693 - fix memory leak for create error case (398)
3694 - fix LOV locking bug that would get cli/srv out of sync
3695 - fix echo client over LOV (409)
3696 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
3697 - fix double-O_EXCL intent crash (424)
3698 - avoid sending multiple lock CANCELs (352)
3700 - MDS can do multi-client recovery (modulo bugs in new code)
3702 - many updates, edits, cleanups
3704 2002-11-18 Phil Schwan <phil@clusterfs.com>
3707 - fix null d_it dereference (346)
3708 - fix full OST/dbench hang (333)
3709 - fix permission problem with file removal (286)
3710 - fix removal of OSCs from LOV when they fail
3711 - fix NULL deref during bulk timeout (214)
3712 - fix problems related to multiple filesystems on one MDS (241)
3713 - fixed serious subtle metadata locking bugs
3714 - free locks on clients when inodes are removed due to memory
3716 - fix inode pointer in lock data (285)
3717 - partial support for multiple MDS on a single host (241)
3718 - data locks weren't cancelled at clear_inode time (290, 311)
3719 - intent locks could lead to unbounded lock growth (205)
3720 - added a maximum lock count, an LRU list, and a flusher
3721 - fix multiple rename (365)
3722 - properly abstracted the echo client
3723 - OSC locked 1 byte too many; fixed
3724 - rewrote brw callback code:
3725 - fixed recovery bugs related to LOVs (306)
3726 - fixed too-many-pages-in-one-write crash (191)
3727 - fixed (again) crash in sync_io_timeout (214)
3728 - probably fixed callback-related race (385)
3730 - Add capability to MDS protocol
3731 - LDLM cancellations and callbacks on different portals
3733 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3736 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3737 - defer open object destruction to close time (601981, 138)
3738 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3739 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3740 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3741 - don't call obd_setattr in ll_file_release for destroyed objects
3742 * protocol change to lustre_msg: move |version| and add |flags|
3743 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3744 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3745 * added replay of create, unlink, link and rename operations during
3746 MDS failover; recovery should be much more robust now
3747 * remove failed OSCs from LOVs (only lov_create uses this so far)
3748 * the lustre-HOWTO was brought (more) up to date (582544)
3750 2002-10-23 Phil Schwan <phil@clusterfs.com>
3753 - in-use dentries weren't being reused properly (617851)
3754 - prevent multiple LDLM setup (599178)
3755 - fix LOV size calculations for truncate (617853)
3756 - fix client handling of MDS intent errors (POSIX)
3757 - fix permission bug in lovstripe.c test (624321)
3758 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3759 - truncate past end of file could corrupt data
3760 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3761 - a race in recovery could return ETIMEDOUT to apps (623947)
3762 - building outside the source directory was fixed
3763 * the lustre-HOWTO was brought (more) up to date (582544)
3764 * major progress was made on recovery functionality
3766 2002-10-10 Phil Schwan <phil@clusterfs.com>
3769 - recovery deadlock fix
3770 - rm -rf causes LBUG fix (617817)
3771 - file open by multiple tasks fix (618962)
3772 - directory permissions bugs (602707 and 620007)
3773 - journal_stop fixed with locking (611313)
3774 - O_APPEND failures resolved (618273, perhaps 614459)
3775 - lconf PATH fix (619770)
3776 - IA64 build fix (621450)
3777 - RPC buffer sizes scale with amount of memory
3779 2002-10-01 Phil Schwan <phil@clusterfs.com>
3782 - locks would be cancelled without throwing away data pages,
3783 resulting in inconsistent data (605627)
3784 - inode attributes were not always being refreshed (605627, 612449)
3785 - lconf now continues to cleanup after lctl reports an error
3786 - MDS now enforces user permissions (602707)
3787 - lprocfs cleanup fixed, but not yet enabled (614157)
3788 - fixed infinite server hang, should a client not respond to an AST
3789 - avoid going into recovery if user calls readlink() with a buffer
3790 that's too small (613941)
3791 - AST RPCs no longer require replies (614867) -- this may be changed
3792 - don't crash server if client sends an IOV that's too big (611336)
3793 - fixed lock conversion deadlock (611892)
3794 - fixed the following of symlinks (614622)
3795 * recovery: the server can remove locks from a client that dies, other
3796 clients can make progress
3797 * more extN patch fixes
3798 * compile-time configurable ptlrpc buffer allocations
3800 - collaborative read cache document
3801 - Lustre Lite Performance CDR document-in-progress
3803 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3806 - fix typo in patch-2.4.18
3808 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3811 - clear ptlrpc request each time in handle_incoming_request()
3812 - unlink of files now destroys the object on the OST
3814 2002-09-19 Peter Braam <braam@clusterfs.com>
3816 * add hard link support
3817 * change obdfile creation method
3818 * kernel patch changed
3820 2002-09-19 Peter Braam <braam@clusterfs.com>
3823 - stack overflow bug in extN fixed
3825 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
3827 * documentation updates
3828 - add man pages for config tools
3829 - update tests/README to describe testing with new config tools
3830 - finish metadata API descriptions
3831 * bug fixes and cleanups
3832 - statfs workaround for 16TB limit
3833 - LOV stripe allocation improved, can stripe on subset of OSTs
3834 - LOV file size/IO offset was wrong for files > 4GB in size
3835 - object EA data was being dropped, caused files to be unreadable
3836 - memory overflow with non-LOV OST caused memory corruption
3837 - fixed regression tests to work with new config tools, obdfilter
3838 - fixed bug when directory size became larger than 1 block
3839 - fixed bug (for single client case) when PWD was deleted
3840 - invalidate local directory pages when doing intent-based ops
3841 - avoid LDLM oops when lock callback contained bad data
3843 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
3845 * documentation updates
3846 * bug fixes and cleanups
3847 - configuration tools
3850 - 64-bit compile warnings
3851 - 64-bit internal statfs data
3853 * test_brw on persistent OST devices
3855 * lprocfs (disabled)
3857 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
3859 * documentation updates
3860 * bug fixes and cleanups
3861 * configuration tools
3863 2002-08-30 Peter J. Braam <braam@clusterfs.com>
3866 * many small fixes to 0_5_4
3867 * io/network handling
3868 * thinkos in MDS operations
3870 2002-08-24 Peter J. Braam <braam@clusterfs.com>
3873 * crucial basic fixes to 0.5.3
3874 * IOR, Iozone work over Elan
3877 2002-08-07 Phil Schwan <phil@clusterfs.com>
3878 * version 0_5_3, our first alpha
3879 * we use the new Portals iovs
3880 * documentation updates
3881 * bug fixes and cleanups
3882 * small changes in the DLM wire protocol
3884 2002-07-25 Peter J. Braam <braam@clusterfs.com>
3885 * version 0_5_1 with some initial stability,
3886 * locking on MD and file I/O.
3887 * documentation updates
3888 * several bug fixes since 0.5.0
3889 * small changes in wire protocol
3891 2002-07-18 Phil Schwan <phil@clusterfs.com>
3893 * delivered as Lustre Light Alpha
3894 * fixed a crash after handling invalid MDS requests
3895 * fixed directory pages for architectures with non-4k pages sizes
3897 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
3898 * release version v0_4_4
3899 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
3901 * Fixes a number of interruption problems with OST operations.
3902 * Update documentation for portals header changes
3903 * Move all wire protocol structs/defines to lustre_idl.h
3904 * Fixes symlink length bug.
3905 * Add tcpdump to repository.
3907 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
3908 * release version v0_4_3
3909 * Fixes statfs for inodes on extN.
3910 * Fixes bug in runtests which would delete /etc/hosts.
3911 * Use 64-bit object IDs wherever possible (not into VFS though)
3912 Remove ost_get_info, which is unused by lustre, and out of date.
3914 2002-07-03 Peter Braam <braam@clusterfs.com>
3915 * release version v0_4_2 Fixes a lookup error (type not passed)
3916 * move forward to head of Portals
3917 * move forward to latest Lustre kernel
3919 2002-06-25 Peter Braam <braam@clusterfs.com>
3920 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob