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.
173 Description: Build failure against Centos5 (RHEL5)
174 Details : Define PAGE_SIZE when it isn't present.
178 Description: test_7 on sanity-quota.sh can't be used on separate machines
179 Details : add facet to handle it
183 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
184 Details : with NFS, the anon dentry's parent was set to itself in
185 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
186 corresponding dentry other than use rec->ur_name.
188 --------------------------------------------------------------------------------
190 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
192 * Support for kernels:
193 2.6.5-7.283 (SLES 9),
194 2.6.9-55.EL (RHEL 4),
195 2.6.16.46-0.14 (SLES 10),
196 2.6.18.8 vanilla (kernel.org)
197 * Client support for unpatched kernels:
198 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
199 2.6.16 - 2.6.22 vanilla (kernel.org)
200 * Due to recently discovered recovery problems, we do not recommend
201 using patchless RHEL 4 clients with this or any earlier release.
202 * Recommended e2fsprogs version: 1.39.cfs8
203 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
204 * Starting with this release, the ldiskfs backing filesystem required
205 by Lustre is now in its own package, lustre-ldiskfs. This package
206 should be installed. It is versioned separately from Lustre and
207 may be released separately in future.
211 Description: block reactivating mgc import until all deactivates complete
212 Details : Fix race when failing back MDT/MGS to itself (testing)
214 Severity : enhancement
216 Description: add optional extra BUILD_VERSION info
217 Details : add a new environment variable (namely LUSTRE_VERS) which allows
218 to override the lustre version.
221 Frequency : 2.6.18 servers only
223 Description: ll_kern_mount() doesn't release the module reference
224 Details : The ldiskfs module reference count never drops down to 0
225 because ll_kern_mount() doesn't release the module reference.
230 Description: server LBUG when using old ost_num_threads parameter
231 Details : Accept the old ost_num_threads parameter but warn that it
232 is deprecated, and fix an off-by-one error that caused an LBUG.
237 Description: Transient SCSI error results in persistent IO issue
238 Details : iobuf->dr_error is not reinitialized to 0 between two
242 Frequency : sometimes when underlying device returns I/O errors
244 Description: OSTs not going read-only during write failures
245 Details : OSTs are not remounted read-only when the journal commit threads
246 get I/O errors because fsfilt_ext3 calls journal_start/stop()
247 instead of the ext3 wrappers.
251 Description: poor connect scaling with increasing client count
252 Details : Don't run filter_grant_sanity_check for more than 100 exports
253 to improve scaling for large numbers of clients.
256 Frequency : SLES10 only
258 Description: sanity-quota.sh quotacheck failed: rc = -22
259 Details : Quotas cannot be enabled on SLES10.
262 Frequency : liblustre clients only
264 Description: getdirentries does not give error when run on compute nodes
265 Details : getdirentries does not fail when the size specified as an argument
266 is too small to contain at least one entry
268 Severity : enhancement
270 Description: Add LNET router traceability for debug purposes
271 Details : If a checksum failure occurs with a router as part of the
272 IO path, the NID of the last router that forwarded the bulk data
273 is printed so it can be identified.
278 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
279 Details : Due to a race condition, liblustre clients were occasionally
282 Severity : enhancement
284 Description: lfs setstripe use optional parameters instead of postional
287 Severity : enhancement
289 Description: Nanosecond timestamp support for ldiskfs
290 Details : The on-disk ldiskfs filesystem has added support for nanosecond
291 resolution timestamps. There is not yet support for this at
292 the Lustre filesystem level.
295 Frequency : during server recovery
297 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
298 Details : request with rq_no_resend flag not awake l_wait_event if they get a
302 Frequency : nfs export on patchless client
304 Description: connectathon hang when test nfs export over patchless client
305 Details : Disconnected dentry cannot be found with lookup, so we do not need
306 to unhash it or make it invalid
309 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
310 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
311 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
316 Description: open req refcounting wrong on reconnect
317 Details : If reconnect happened between getting open reply from server and
318 call to mdc_set_replay_data in ll_file_open, we will schedule
319 replay for unreferenced request that we are about to free.
320 Subsequent close will crash in variety of ways.
321 Check that request is still eligible for replay in
322 mdc_set_replay_data().
327 Description: disable writes to filesystem when reading health_check file
328 Details : the default for reading the health_check proc file has changed
329 to NOT do a journal transaction and write to disk, because this
330 can cause reads of the /proc file to hang and block HA state
331 checking on a healthy but otherwise heavily loaded system. It
332 is possible to return to the previous behaviour during configure
333 with --enable-health-write.
335 Severity : enhancement
337 Description: 64-bit inode version
338 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
339 to the inode. This will be required for version-based recovery.
344 Description: MDS fails to start if a duplicate client export is detected
345 Details : in some rare cases it was possible for a client to connect to
346 an MDS multiple times. Upon recovery the MDS would detect this
347 and fail during startup. Handle this more gracefully.
349 Severity : enhancement
351 Description: Add -o localflock option to simulate old noflock
353 Details : This will achieve local-only flock/fcntl locks
359 Description: log_commit_thread vs filter_destroy race leads to crash
360 Details : Take import reference before releasing llog record semaphore
365 Description: Wrong request locking in request set processing
366 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
367 imp_delayed_list, in this place should be used imp_lock.
370 Frequency : when reconnection
372 Description: Grant Leak when osc reconnect to OST
373 Details : When osc reconnect ost, OST(filter) should check whether it
374 should grant more space to client by comparing fed_grant and
375 cl_avail_grant, and return the granted space to client instead
376 of "new granted" space, because client will call osc_init_grant
377 to update the client grant space info.
380 Frequency : when client reconnect to OST
382 Description: Grant Leak when osc do resend and replay bulk write
383 Details : When osc reconnect to OST, OST(filter)should clear grant info of
384 bulk write request, because the grant info while be sync between
385 OSC and OST when reconnect, and we should ignore the grant info
386 these of resend/replay write req.
391 Description: Grant space more than avaiable left space sometimes.
392 Details : When then OST is about to be full, if two bulk writing from
393 different clients came to OST. Accord the avaliable space of the
394 OST, the first req should be permitted, and the second one
395 should be denied by ENOSPC. But if the seconde arrived before
396 the first one is commited. The OST might wrongly permit second
397 writing, which will cause grant space > avaiable space.
400 Frequency : when client is evicted
402 Description: Grant might be wrongly erased when osc is evicted by OST
403 Details : when the import is evicted by server, it will fork another
404 thread ptlrpc_invalidate_import_thread to invalidate the
405 import, where the grant will be set to 0. While the original
406 thread will update the grant it got when connecting. So if
407 the former happened latter, the grant will be wrongly errased
408 because of this race.
413 Description: Checking Stale with correct fid
414 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
415 to check whether it is stale, because sometimes, we want the
416 enqueue happened anyway, and op_data.fid2 will not be initialized.
418 Severity : enhancement
420 Description: update patchless client
421 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
424 Frequency : only with 2.4 kernel
426 Description: random memory corruption
427 Details : size of struct ll_inode_info is to big for union inode.u and this
428 can be cause of random memory corruption.
433 Description: Memory leak in recovery
434 Details : Lov_mds_md was not free in an error handler in mds_create_object.
435 It should also check obd_fail before fsfilt_start, otherwise if
436 fsfilt_start return -EROFS,(failover mds during mds recovery).
437 then the req will return with repmsg->transno = 0 and rc = EROFS.
438 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
439 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
440 be freed no matter whether fsfilt_commit success or not.
443 Frequency : only with huge count clients
445 Description: Prevents from taking the superblock lock in llap_from_page for
447 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
448 for llap_from_page call in ll_removepage prevents from taking the
449 superblock lock for a soon died page.
454 Description: Not check open intent error before release open handle
455 Details : in some rare cases, the open intent error is not checked before
456 release open handle, which may cause
457 ASSERTION(open_req->rq_transno != 0), because it tries to release
458 the failed open handle.
463 Description: Set cat log bitmap only after create log success.
464 Details : in some rare cases, the cat log bitmap is set too early. and it
465 should be set only after create log success.
469 Description: Accessing a block bevice can re-enable I/O when Lustre is
470 tearing down a device.
471 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
476 Description: service threads may hog cpus when there are a lot of requests
478 Details : Insert cond_resched to give other threads a chance to use some of
484 Description: the cat log was not initialized in recovery
485 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
486 unlink log on mds will not be initialized until mds post
487 recovery. And also in mds post recovery, the unlink log will
488 initialization will be done asynchronausly, so there will be race
489 between add unlink log and unlink log initialization.
493 Description: brw_stats were being printed incorrectly
494 Details : brw_stats were being printed as log2 but all of them were not
495 recorded as log2. Also remove some code duplication arising from
496 filter_tally_{read,write}.
500 Frequency : rare, only in recovery.
501 Description: ASSERTION(req->rq_type != LI_POISON) failed
502 Details : imp_lock should be held while iterating over imp_sending_list for
503 prevent destroy request after get timeout in ptlrpc_queue_wait.
507 Description: replay-single.sh test 52 fails
508 Details : A lock's skiplist need to be cleanup when it being unlinked
509 from its resource list.
513 Description: Short directio read returns full requested size rather than
515 Details : Direct I/O operations should return actual amount of bytes
516 transferred rather than requested size.
518 Severity : enhancement
520 Description: metadata RPC reduction (e.g. for rm performance)
521 Details : decrease the amount of synchronous RPC between clients and servers
522 by canceling conflicing lock before the operation on the client side
523 and packing thier handles into the main operation RPC to server.
525 Severity : enhancement
527 Description: Async OSC create to avoid the blocking unnecessarily.
528 Details : If a OST has no remain object, system will block on the creating
529 when need to create a new object on this OST. Now, ways use
530 pre-created objects when available, instead of blocking on an
531 empty osc while others are not empty. If we must block, we block
532 for the shortest possible period of time.
534 --------------------------------------------------------------------------------
536 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
541 Frequency : on some architectures
543 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
544 Details : Uninitialized flags sometimes cause configuration commands to
548 Frequency : patchless clients only
550 Description: missing __iget() symbol export
551 Details : The __iget() symbol export is missing. To avoid the need for
552 this on patchless clients the deathrow inode reaper is turned
553 off, and we depend on the VM to clean up old inodes. This
554 dependency was during via the fix for bug 12181.
556 --------------------------------------------------------------------------------
558 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
560 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
561 INTEROPERATE with older versions automatically. In many cases a
562 special upgrade step is needed. Please read the
563 user documentation before upgrading any part of a live system.
564 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
565 version will not interoperate with 1.6 betas before beta5 (1.5.95).
566 * WARNING: Lustre configuration and startup changes are required with
567 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
573 Severity : enhancement
575 Description: MountConf
576 Details : Lustre configuration is now managed via mkfs and mount
577 commands instead of lmc and lconf. New obd types (MGS, MGC)
578 are added for dynamic configuration management. See
579 https://mail.clusterfs.com/wikis/lustre/MountConf for
582 Severity : enhancement
584 Description: dynamic OST addition
585 Details : OSTs can now be added to a live filesystem
587 Severity : enhancement
589 Description: startup order invariance
590 Details : MDTs and OSTs can be started in any order. Clients only
591 require the MDT to complete startup.
593 Severity : enhancement
595 Description: parallel, asynchronous orphan cleanup
596 Details : orphan cleanup is now performed in separate threads for each
597 OST, allowing parallel non-blocking operation.
599 Severity : enhancement
601 Description: optimized stripe assignment
602 Details : stripe assignments are now made based on ost space available,
603 ost previous usage, and OSS previous usage, in order to try
604 to optimize storage space and networking resources.
606 Severity : enhancement
608 Description: Permanently set tunables
609 Details : All writable /proc/fs/lustre tunables can now be permanently
610 set on a per-server basis, at mkfs time or on a live
613 Severity : enhancement
615 Description: Lustre message v2
616 Details : Add lustre message format v2.
618 Severity : enhancement
620 Description: client OST exclusion list
621 Details : Clients can be started with a list of OSTs that should be
622 declared "inactive" for known non-responsive OSTs.
626 Description: SPEC SFS validation failure on NFS v2 over lustre.
627 Details : Changes the blocksize for regular files to be 2x RPC size,
628 and not depend on stripe size.
630 Severity : enhancement
632 Description: Multiple MD RPCs in flight.
633 Details : Further unserialise some read-only MDS RPCs - learn about intents.
634 To avoid overly-overloading MDS, introduce a limit on number of
635 MDS RPCs in flight for a single client and add /proc controls
636 to adjust this limit.
638 Severity : enhancement
640 Description: client read/write statistics
641 Details : Add client read/write call usage stats for performance
642 analysis of user processes.
643 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
644 file access. extents_stats shows chunk size distribution.
645 extents_stats_per_process show chunk size distribution per
648 Severity : enhancement
650 Description: mds statistics
651 Details : Add detailed mds operations statistics in
652 /proc/fs/lustre/mds/*/stats.
656 Description: Failure of copying files with lustre special EAs.
657 Details : Client side always return success for setxattr call for lustre
658 special xattr (currently only "trusted.lov").
663 Description: Refcount LNET uuids
664 Details : The global LNET uuid list grew linearly with every startup;
665 refcount repeated list entries instead of always adding to
668 Severity : enhancement
670 Description: Dynamic service threads
671 Details : Within a small range, start extra service threads
672 automatically when the request queue builds up.
675 Frequency : mixed-endian client/server environments
677 Description: mixed-endian crashes
678 Details : The new msg_v2 system had some failures in mixed-endian
681 Severity : enhancement
683 Description: Easy OST removal
684 Details : OSTs can be permanently deactivated with e.g. 'lctl
685 conf_param lustre-OST0001.osc.active=0'
687 Severity : enhancement
689 Description: MGS proc entries
690 Details : Added basic proc entries for the MGS showing what filesystems
693 Severity : enhancement
695 Description: provide MGS failover
696 Details : Added config lock reacquisition after MGS server failover.
698 Severity : enhancement
700 Description: add Linux 2.4 support
701 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
705 Description: a large application tries to do I/O to the same resource and dies
707 Details : Check the req->rq_arrival time after the call to
708 ost_brw_lock_get(), but before we do anything about
709 processing it & sending the BULK transfer request. This
710 should help move old stale pending locks off the queue as
711 quickly as obd_timeout.
714 Frequency : when an incorrect nid is specified during startup
716 Description: ptlrpc connect to non-existant node causes kernel crash
717 Details : LNET can't be re-entered from an event callback, which
718 happened when we expire a message after the export has been
719 cleaned up. Instead, hand the zombie cleanup off to another
722 Severity : enhancement
724 Description: plain/inodebits lock performance improvement
725 Details : Grouping plain/inodebits in granted list by their request modes
726 and bits policy, thus improving the performance of search through
730 Frequency : only if OST filesystem is corrupted
732 Description: client incorrectly hits assertion in ptlrpc_replay_req()
733 Details : for a short time RPCs with bulk IO are in the replay list,
734 but replay of bulk IOs is unimplemented. If the OST filesystem
735 is corrupted due to disk cache incoherency and then replay is
736 started it is possible to trip an assertion. Avoid putting
737 committed RPCs into the replay list at all to avoid this issue.
740 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
742 Description: System hang on startup
743 Details : This bug allowed the liblustre (e.g. catamount) client to
744 return to the app before handling all startup RPCs. This
745 could leave the node unresponsive to lustre network traffic
746 and manifested as a server ptllnd timeout.
748 Severity : enhancement
750 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
751 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
752 boolean to control whether to print peer debug info when a
753 client's RPC times out.
756 Frequency : only for kernels with patches from Lustre below 1.4.3
758 Description: Remove old rdonly API
759 Details : Remove old rdonly API which unused from at least lustre 1.4.3
762 Frequency : only for devices with external journals
764 Description: Set external device read-only also
765 Details : During a commanded failover stop, we set the disk device
766 read-only while the server shuts down. We now also set any
767 external journal device read-only at the same time.
770 Frequency : when upgrading from 1.4 while trying to change parameters
772 Description: The wrong (new) MDC name was used when setting parameters for
773 upgraded MDT's. Also allows changing of OSC (and MDC)
774 parameters if --writeconf is specified at tunefs upgrade time.
777 Frequency : when setting specific ost indicies
779 Description: QOS code breaks on skipped indicies
780 Details : Add checks for missing OST indicies in the QOS code, so OSTs
781 created with --index need not be sequential.
783 Severity : enhancement
785 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
786 Details : The uninit_groups feature works in conjunction with the kernel
787 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
788 up the pass1 processing of e2fsck. This is a read-only feature
789 in ldiskfs2 only, so older kernels and current ldiskfs cannot
790 mount filesystems that have had this feature enabled.
792 Severity : enhancement
794 Description: Improve multi-block allocation algorithm to avoid fragmentation
795 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
796 allocation locality and avoid filesystem fragmentation.
798 ------------------------------------------------------------------------------
800 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
802 * Support for kernels:
803 2.4.21-47.0.1.EL (RHEL 3)
805 2.6.9-42.0.10.EL (RHEL 4)
806 2.6.12.6 vanilla (kernel.org)
807 2.6.16.27-0.9 (SLES 10)
808 * Recommended e2fsprogs version: 1.39.cfs5
810 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
814 Frequency : occasional, depends on client load and configuration
815 Bugzilla : 12181, 12203
816 Description: data loss for recently-modified files
818 Details : In some cases it is possible that recently written or created
819 files may not be written to disk in a timely manner (this should
820 normally be within 30s unless client IO load is very high).
821 The problem appears as zero-length files or files that are a
822 multiple of 1MB in size after a client crash or client eviction
823 that are missing data at the end of the file.
825 This problem is more likely to be hit on clients where files are
826 repeatedly created and unlinked in the same directory, clients
827 have a large amount of RAM, have many CPUs, the filesystem has
828 many OSTs, the clients are rebooted frequently, and/or the files
829 are not accessed by other nodes after being written.
831 The presence of the problem can be detected by looking at
832 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
833 smaller than the second (nr_unused) then dirty files will not
834 be flushed automatically to disk. "sync; sleep 10" should be
835 run several times on the node before unmounting it to update
836 Lustre (this is also safe to run on nodes without this problem).
838 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
839 that can cause this same problem, so customers using that kernel
840 also need to update the kernel in addition to Lustre. In order
841 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
843 It is normal that files written just before a client crash (less
844 than 30s) may not yet have been flushed to disk, even for local
848 Frequency : frequent on thin XT3 nodes
850 Description: UUID collision on thin XT3 Linux nodes
851 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
852 randomly, since we relied on an insufficiently-seeded PRNG.
857 Description: OSS hangs after "All ost request buffers busy"
858 Details : A deadlock between quota and journal operations caused OSS
859 hangs after printing "All ost request buffers busy."
862 Frequency : always on liblustre builds
864 Description: Cleanup compiler warnings on liblustre
867 Frequency : always on liblustre builds on XT3
869 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
873 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
874 > 32000 subdirectories
875 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
876 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
877 subdirectory count crosses 32000. This will aid e2fsck to
878 correctly handle more than 32000 subdirectories.
881 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
883 Description: System hang on startup
884 Details : This bug allowed the liblustre (e.g. catamount) client to
885 return to the app before handling all startup RPCs. This
886 could leave the node unresponsive to lustre network traffic
887 and manifested as a server ptllnd timeout.
889 Severity : enhancement
891 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
892 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
893 boolean to control whether to print peer debug info when a
894 client's RPC times out.
899 Description: make O_SYNC working on 2.6 kernels
900 Details : 2.6 kernels use different method for mark pages for write,
901 so need add a code to lustre for O_SYNC work.
906 Description: Failure to close file and release space on NFS
907 Details : Put inode details into lock acquired in ll_intent_file_open.
908 Use mdc_intent_lock in ll_intent_open to properly
909 detect all kind of errors unhandled by mdc_enqueue.
914 Description: proc file read during shutdown sometimes raced obd removal,
916 Details : Add lock to prevent obd access after proc file removal.
919 Frequency : Only for files larger than 4GB on 32-bit clients.
921 Description: improperly doing page alignment of locks
922 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
923 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
928 Description: RPCs being resent when they shouldn't be
929 Details : Some RPCs that should not be resent are being resent. This
930 can cause inconsistencies in the RPC state machine. Do not
931 resend such requests.
934 Frequency : rare, only with NFS export
936 Description: Crash on NFS re-export node
937 Details : under very unusual load conditions an assertion is hit in
938 ll_intent_file_open()
941 Frequency : only if OST filesystem is corrupted
943 Description: client incorrectly hits assertion in ptlrpc_replay_req()
944 Details : for a short time RPCs with bulk IO are in the replay list,
945 but replay of bulk IOs is unimplemented. If the OST filesystem
946 is corrupted due to disk cache incoherency and then replay is
947 started it is possible to trip an assertion. Avoid putting
948 committed RPCs into the replay list at all to avoid this issue.
953 Description: large O_DIRECT requests fail under memory pressure/fragmentation
954 Details : Large single O_DIRECT read and write calls can fail to allocate
955 a sufficiently large buffer to process the request. In case of
956 allocation failure the allocation is retried with a smaller
957 buffer and broken into smaller requests.
959 Severity : enhancement
961 Description: Add -o localflock option to simulate old noflock behaviour.
962 Details : This will achieve local-only flock/fcntl locks coherentness.
967 Description: versioning check is incomplete
968 Details : Checking the version difference of client vs. server, report
969 error if the gap is too big.
974 Description: add support PG_writeback bit
975 Details : add support for PG_writeback bit for Lustre, for more carefull
976 work with page cache in 2.6 kernel. This also fix some deadlocks
977 and remove hack for work O_SYNC with 2.6 kernel.
979 Severity : enhancement
981 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
982 Details : The uninit_groups feature works in conjunction with the kernel
983 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
984 up the pass1 processing of e2fsck. This is a read-only feature
985 in ldiskfs2 only, so older kernels and current ldiskfs cannot
986 mount filesystems that have had this feature enabled.
988 Severity : enhancement
990 Description: Improve multi-block allocation algorithm to avoid fragmentation
991 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
992 allocation locality and avoid filesystem fragmentation.
994 ------------------------------------------------------------------------------
996 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
998 * Support for kernels:
999 2.6.9-42.0.3.EL (RHEL 4)
1000 2.6.5-7.276 (SLES 9)
1001 2.4.21-47.0.1.EL (RHEL 3)
1002 2.6.12.6 vanilla (kernel.org)
1003 2.6.16.21-0.8 (SLES10)
1004 * Recommended e2fsprogs version: 1.39.cfs2-0
1006 * The backwards-compatible /proc/sys/portals symlink has been removed
1007 in this release. Before upgrading, please ensure that you change
1008 any configuration scripts or /etc/sysctl.conf files that access
1009 /proc/sys/portals/* or sysctl portals.* to use the corresponding
1010 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
1011 in advance of the upgrade on any system running Lustre 1.4.6 or
1012 newer, since /proc/sys/lnet was added in that version.
1013 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1017 Frequency : only when quota is used
1019 Description: avoid scanning export list for quota master
1020 Details : Change the algorithms to avoid scanning export list in order
1021 to improve the efficiency.
1024 Frequency : MDS failover only, very rarely
1026 Description: "went back in time" messages on mds failover
1027 Details : The greatest transno may be lost when the current operation
1028 finishes with an error (transno==0) and the client's last_rcvd
1029 record is over-written. Save the greatest transno in the
1030 mds_last_transno for this case.
1033 Frequency : always for specific kernels and striping counts
1035 Description: client may get "Matching packet too big" without ACL support
1036 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
1037 when trying to access files in certain configurations. The
1038 clients should in fact be denied when mounting because they do
1039 not understand ACLs.
1042 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
1044 Description: many clients connecting with IO in progress causes connect timeouts
1045 Details : Avoid synchronous journal commits to avoid delays caused by many
1046 clients connecting/disconnecting when bulk IO is in progress.
1047 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
1048 OST_IO_PORTAL to avoid delays behind potentially many pending
1052 Frequency : occasionally with multiple writers to a single file
1054 Description: shared writes to file may result in wrong size reported by stat()
1055 Details : Allow growing of kms when extent lock is cancelled
1058 Frequency : always with random mmap IO to multi-striped file
1060 Description: mmap write might be lost if we are writing to a 'hole' in stripe
1061 Details : Only if the hole is at the end of OST object so that kms is too
1062 small. Fix is to increase kms accordingly in ll_nopage.
1065 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
1067 Description: writes to a missing object would leak memory on the OST
1068 Details : If there is an inconsistency between the MDS and OST filesystems,
1069 such that the MDS references an object that doesn't exist, writes
1070 to that object will leak memory due to incorrect cleanup in the
1071 error handling path, eventually running out of memory on the OST.
1076 Description: Creating too long symlink causes lustre errors
1077 Details : Check symlink and name lengths before sending requests to MDS.
1080 Frequency : only if flock is enabled (not on by default)
1082 Description: posix locks not released on fd closure on 2.6.9+
1083 Details : We failed to add posix locks to list of inode locks on 2.6.9+
1084 kernels, this caused such locks not to be released on fd close and
1085 then assertions on fs unmount about still used locks.
1088 Frequency : MDS failover only, very rarely
1090 Description: clients may get ASSERTION(granted_lock != NULL)
1091 Details : When request was taking a long time, and a client was resending
1092 a getattr by name lock request. The were multiple lock requests
1093 with the same client lock handle and
1094 mds_getattr_name->fixup_handle_for_resent_request found one of the
1095 lock handles but later failed with ASSERTION(granted_lock != NULL).
1100 Description: handle->h_buffer_credits > 0, assertion failure
1101 Details : h_buffer_credits is zero after truncate, causing assertion
1102 failure. This patch extends the transaction or creates a new
1106 Frequency : NFS re-export or patchless client
1107 Bugzilla : 11179, 10796
1108 Description: Crash on NFS re-export node (__d_move)
1109 Details : We do not want to hash the dentry if we don't have a lock.
1110 But if this dentry is later used in d_move, we'd hit uninitialised
1111 list head d_hash, so we just do this to init d_hash field but
1112 leave dentry unhashed.
1115 Frequency : NFS re-export or patchless client
1117 Description: NFS exports has problem with symbolic link
1118 Details : lustre client didn't properly install dentry when re-exported
1119 to NFS or running patchless client.
1122 Frequency : NFS re-export or patchless client
1124 Description: Various nfs/patchless fixes.
1125 Details : fixes reuse disconected alias for lookup process - this fixes
1126 warning "find_exported_dentry: npd != pd",
1127 fix permission error with open files at nfs.
1128 fix apply umask when do revalidate.
1131 Frequency : occasional
1133 Description: Crash on NFS re-export node
1134 Details : calling clear_page() on the wrong pointer triggered oops in
1135 generic_mapping_read().
1138 Frequency : rarely, using O_DIRECT IO
1140 Description: unaligned directio crashes client with LASSERT
1141 Details : check for unaligned buffers before trying any requests.
1144 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
1146 Description: stale data returned from RAID cache
1147 Details : If only a small amount of IO is done to the RAID device before
1148 reading it again it is possible to get stale data from the RAID
1149 cache instead of reading it from disk.
1152 Frequency : always for sles10 kernel
1154 Description: sles10 support
1155 Details : ll_follow_link: compile fixes and using of nd_set_link
1156 under newer kernels.
1159 Frequency : depends on arch, kernel and compiler version, always on sles10
1162 Description: recursive or deep enough symlinks cause stack overflow
1163 Details : getting rid of large stack-allocated variable in
1167 Frequency : depends on hardware
1169 Description: lustre write performance loss in the SLES10 kernel
1170 Details : the performance loss is caused by using of write barriers in the
1171 ext3 code. The SLES10 kernel turns barrier support on by
1172 default. The fix is to undo that change for ldiskfs.
1174 ------------------------------------------------------------------------------
1176 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
1178 * Support for kernels:
1179 2.6.9-42.0.3EL (RHEL 4)
1180 2.6.5-7.276 (SLES 9)
1181 2.4.21-47.0.1.EL (RHEL 3)
1182 2.6.12.6 vanilla (kernel.org)
1186 Frequency : quota enabled and large files being deleted
1188 Description: releasing more than 4GB of quota at once hangs OST
1189 Details : If a user deletes more than 4GB of files on a single OST it
1190 will cause the OST to spin in an infinite loop. Release
1191 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1196 Description: statfs data retrieved from /proc may be stale or zero
1197 Details : When reading per-device statfs data from /proc, in the
1198 {kbytes,files}_{total,free,avail} files, it may appear
1199 as zero or be out of date.
1202 Frequency : systems with MD RAID1 external journal devices
1204 Description: lconf's call to blkid is confused by RAID1 journal devices
1205 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1206 of returning all block devices that match the journal UUID.
1209 Frequency : always, for aggregate stripe size over 4GB
1211 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
1212 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
1213 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
1216 Frequency : always if "lfs find" used on a local file/directory
1218 Description: "lfs find" segfaults if used on a local file/directory
1219 Details : The case where a directory component was not specified wasn't
1220 handled correctly. Handle this properly.
1223 Frequency : always on ppc64
1225 Description: the write to an ext3 filesystem mounted with mballoc got stuck
1226 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1227 perform endianness conversion.
1230 Frequency : rarely (truncate to non-zero file size after write under load)
1231 Bugzilla : 10730, 10687
1232 Description: Files padded with zeros to next 4K multiple
1233 Details : With filesystems mounted using the "extents" option (2.6 kernels)
1234 it is possible that files that are truncated to a non-zero size
1235 immediately after being written are filled with zero bytes beyond
1236 the truncated size. No file data is lost.
1238 Severity : enhancement
1240 Description: Allow recovery/failover for liblustre clients.
1241 Details : liblustre clients were unaware of failover configurations until
1244 Severity : enhancement
1246 Description: user file locks should fail when not mounting with flock option
1247 Details : Set up an error-returning stub in ll_file_operations.lock field
1248 to prevent incorrect behaviour when client is mounted without
1249 flock option. Also, set up properly f_op->flock field for
1253 Frequency : always on ia64
1255 Description: "lfs df" loops on printing out MDS statfs information
1256 Details : The obd_ioctl_data was not initialized and in some systems
1257 this caused a failure during the ioctl that did not return
1258 an error. Initialize the struct and return an error on failure.
1261 Frequency : SLES 9 only
1263 Description: Error of copying files with lustre special EAs as root
1264 Details : Client side always return success for setxattr call for lustre
1265 special xattr (currently only "trusted.lov").
1268 Frequency : rarely on clusters with both ia64+i386 clients
1270 Description: ia64+i686 clients doing shared IO on the same file may LBUG
1271 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
1272 clients are doing concurrent writes to the same file it is
1273 possible that the ia64 clients may LASSERT because the OST
1274 extent locks are not PAGE_SIZE aligned. Ensure that grown
1275 locks are always aligned on the request boundary.
1278 Frequency : specific use, occasional
1280 Description: Overwriting in use executable truncates on-disk binary image
1281 Details : If one node attempts to overwrite an executable in use by
1282 another node, we now correctly return ETXTBSY instead of
1283 truncating the file.
1285 Severity : enhancement
1287 Description: Async OSC create to avoid the blocking unnecessarily.
1288 Details : If a OST has no remain object, system will block on the creating
1289 when need to create a new object on this OST. Now, ways use
1290 pre-created objects when available, instead of blocking on an
1291 empty osc while others are not empty. If we must block, we block
1292 for the shortest possible period of time.
1297 Description: chmod on Lustre root is propagated to other clients
1298 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
1299 invalid by the follow_mount time.
1302 Frequency : liblustre clients only
1304 Description: Race in 'instant cancel' lock handling could lead to such locks
1305 never to be granted in case of SMP MDS
1306 Details : Do not destroy not yet granted but cbpending locks in
1310 Frequency : replay/resend of open
1312 Description: non null lock assetion failure in mds_intent_policy
1313 Details : Trying to replay/resend lockless open requests resulted in
1314 mds_open() returning 0 with no lock. Now it sets a flag if
1315 a lock is going to be returned.
1317 Severity : enhancement
1319 Description: Checksum enhancements
1320 Details : New checksum enhancements allow for resending RPCs that failed
1323 Severity : enhancement
1325 Description: Tunables on number of dirty pages in cacche
1326 Details : Allow to set limit on number of dirty pages cached.
1331 Description: client crash on unmount - lock still has references
1332 Details : In some error handling cases it was possible to leak a lock
1333 reference on a client while accessing a file. This was not
1334 harmful to the client during operation, but would cause the
1335 client to crash when the filesystem is unmounted.
1338 Frequency : specific case, rare
1340 Description: ETXTBSY on mds though file not in use by client
1341 Details : ETXTBSY is no longer incorrectly returned when attempting to
1342 chmod or chown a directory that the user previously tried to
1343 execute or a currently-executing binary.
1346 Frequency : extremely rare except on liblustre-based clients
1348 Description: Lustre space not freed when files are deleted
1349 Details : Clean up open-unlinked files after client eviction. Previously
1350 the unlink was skipped and the files remained as orphans.
1355 Description: OST failure "would be an LBUG" in waiting_locks_callback()
1356 Details : In some cases it was possible to send a blocking callback to
1357 a client doing a glimpse, even though that client didn't get
1358 a lock granted. When the glimpse lock is cancelled on the OST
1359 the freed lock is left on the waiting list and corrupted the list.
1362 Frequency : all core dumps
1364 Description: Broke core dumps to lustre
1365 Details : Negative dentry may be unhashed if parent does not have UPDATE
1366 lock, but some callers, e.g. do_coredump, expect dentry to be
1367 hashed after successful create, hash it in ll_create_it.
1369 ------------------------------------------------------------------------------
1371 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
1373 * Support for kernels:
1374 2.6.9-42.0.2.EL (RHEL 4)
1375 2.6.5-7.276 (SLES 9)
1376 2.4.21-40.EL (RHEL 3)
1377 2.6.12.6 vanilla (kernel.org)
1381 Frequency : always on RHEL 3
1383 Description: Number of open files grows over time
1384 Details : The number of open files grows over time, whether or not
1385 Lustre is started. This was due to a filp leak introduced
1386 by one of our kernel patches.
1388 ------------------------------------------------------------------------------
1390 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1392 * Support for kernels:
1393 2.6.9-42.EL (RHEL 4)
1394 2.6.5-7.276 (SLES 9)
1395 2.4.21-40.EL (RHEL 3)
1396 2.6.12.6 vanilla (kernel.org)
1401 Bugzilla : 5719, 9635, 9792, 9684
1402 Description: OST (or MDS) trips assertions in (re)connection under heavy load
1403 Details : If a server is under heavy load and cannot reply to new
1404 connection requests before the client resends the (re)connect,
1405 the connection handling code can behave badly if two service
1406 threads are concurrently handing separate (re)connections from
1407 the same client. Add better locking to the connection handling
1408 code, and ensure that only a single connection will be processed
1409 for a given client UUID, even if the lock is dropped.
1411 Severity : enhancement
1413 Description: add TCP zero-copy support to kernel
1414 Details : Add support to the kernel TCP stack to allow zero-copy bulk
1415 sends if the hardware supports scatter-gather and checksumming.
1416 This allows socklnd to do client-write and server-read more
1417 efficiently and reduce CPU utilization from skbuf copying.
1420 Frequency : only if NFS exporting from client
1422 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
1423 Details : If setting attributes on a file created under NFS that had
1424 never been opened it would be possible to oops the client
1425 if the file had no objects.
1428 Frequency : always for liblustre
1430 Description: liblustre client does MDS+OSTs setattr RPC for each write
1431 Details : When doing a write from a liblustre client, the client
1432 incorrectly issued an RPC to the MDS and each OST the file was
1433 striped over in order to update the timestamps. When writing
1434 with small chunks and many clients this could overwhelm the MDS
1435 with RPCs. In all cases it would slow down the write because
1436 these RPCs are unnecessary.
1438 Severity : enhancement
1440 Description: allow number of MDS service threads to be changed at module load
1441 Details : It is now possible to change the number of MDS service threads
1442 running. Adding "options mds mds_num_threads={N}" to the MDS's
1443 /etc/modprobe.conf will set the number of threads for the next
1444 time Lustre is restarted (assuming the "mds" module is also
1445 reloaded at that time). The default number of threads will
1446 stay the same, 32 for most systems.
1451 Description: OST crash if filesystem is unformatted or corrupt
1452 Details : If an OST is started on a device that has never been formatted
1453 or if the filesystem is corrupt and cannot even mount then the
1454 error handling cleanup routines would dereference a NULL pointer.
1459 Description: NULL pointer deref in llap_from_page.
1460 Details : get_cache_page_nowait can return a page with NULL (or otherwise
1461 incorrect) mapping if the page was truncated/reclaimed while it was
1462 searched for. Check for this condition and skip such pages when
1463 doing readahead. Introduce extra check to llap_from_page() to
1464 verify page->mapping->host is non-NULL (so page is not anonymous).
1467 Frequency : Sometimes when using sys_sendfile
1469 Description: "page not covered by a lock" warnings from ll_readpage
1470 Details : sendfile called ll_readpage without right page locks present.
1471 Now we introduced ll_file_sendfile that does necessary locking
1472 around call to generic_file_sendfile() much like we do in
1476 Frequency : with certain MDS communication failures at client mount time
1478 Description: NULL pointer deref after failed client mount
1479 Details : a client connection request may delayed by the network layer
1480 and not be sent until after the PTLRPC layer has timed out the
1481 request. If the client fails the mount immediately it will try
1482 to clean up before the network times out the request. Add a
1483 reference from the request import to the obd device and delay
1484 the cleanup until the network drops the request.
1487 Frequency : occasionally during client (re)connect
1489 Description: assertion failure during client (re)connect
1490 Details : processing a client connection request may be delayed by the
1491 client or server longer than the client connect timeout. This
1492 causes the client to resend the connection request. If the
1493 original connection request is replied in this interval, the
1494 client may trip an assertion failure in ptlrpc_connect_interpret()
1495 which thought it would be the only running connect process.
1498 Frequency : only with obd_echo servers and clients that are rebooted
1500 Description: kernel BUG accessing uninitialized data structure
1501 Details : When running an obd_echo server it did not start the ping_evictor
1502 thread, and when a client was evicted an uninitialized data
1503 structure was accessed. Start the ping_evictor in the RPC
1504 service startup instead of the OBD startup.
1506 Severity : enhancement
1507 Bugzilla : 10193 (patchless)
1508 Description: Remove dependency on various unexported kernel interfaces.
1509 Details : No longer need reparent_to_init, exit_mm, exit_files,
1510 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
1513 Frequency : rare (only users of deprecated and unsupported LDAP config)
1515 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
1516 Details : LDAP apparently contains 'lustreName' attributes instead of
1517 'name'. A simple remapping of the name is sufficient.
1520 Frequency : rare (only with non-default dump_on_timeout debug enabled)
1522 Description: waiting_locks_callback trips kernel BUG if client is evicted
1523 Details : Running with the dump_on_timeout debug flag turned on makes
1524 it possible that the waiting_locks_callback() can try to dump
1525 the Lustre kernel debug logs from an interrupt handler. Defer
1526 this log dumping to the expired_lock_main() thread.
1528 Severity : enhancement
1530 Description: Support NFS exporting on 2.6 kernels.
1531 Details : Implement non-rawops metadata methods for NFS server to use without
1532 changing NFS server code.
1535 Frequency : very rare (synthetic metadata workload only)
1537 Description: two racing renames might cause an MDS thread to deadlock
1538 Details : Running the "racer" program may cause one MDS thread to rename
1539 a file from being the source of a rename to being the target of
1540 a rename at exactly the same time that another thread is doing
1541 so, and the second thread has already enqueued these locks after
1542 doing a lookup of the target and is trying to relock them in
1543 order. Ensure that we don't try to re-lock the same resource.
1546 Frequency : only very large systems with liblustre clients
1548 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
1549 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
1550 all OSTs in parallel. This allows the eviction of stale liblustre
1551 clients to proceed much faster than if they were done in series,
1552 and also offers similar improvements for other set_info RPCs.
1557 Description: excessive CPU usage during initial read phase on client
1558 Details : During the initial read phase on a client, it would agressively
1559 retry readahead on the file, consuming too much CPU and impacting
1560 performance (since 1.4.5.8). Improve the readahead algorithm
1561 to avoid this, and also improve some other common cases (read
1562 of small files in particular, where "small" is files smaller than
1563 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
1568 Description: MDS crash when receiving packet with unknown intent.
1569 Details : Do not LBUG in unknown intent case, just return -EFAULT
1571 Severity : enhancement
1572 Bugzilla : 9293, 9385
1573 Description: MDS RPCs are serialised on client. This is unnecessary for some.
1574 Details : Do not serialize getattr (non-intent version) and statfs.
1577 Frequency : occasional, when OST network is overloaded/intermittent
1579 Description: client evicted by OST after bulk IO timeout
1580 Details : If a client sends a bulk IO request (read or write) the OST
1581 may evict the client if it is unresposive to its data GET/PUT
1582 request. This is incorrect if the network is overloaded (takes
1583 too long to transfer the RPC data) or dropped the OST GET/PUT
1584 request. There is no need to evict the client at all, since
1585 the pinger and/or lock callbacks will handle this, and the
1586 client can restart the bulk request.
1589 Frequency : Always when mmapping file with no objects
1591 Description: client crashes when mmapping file with no objects
1592 Details : Check that we actually have objects in a file before doing any
1593 operations on objects in ll_vm_open, ll_vm_close and
1599 Description: Request leak when working with deleted CWD
1600 Details : Introduce advanced request refcount tracking for requests
1601 referenced from lustre intent.
1603 Severity : Enhancement
1605 Description: Cache open file handles on client.
1606 Details : MDS now will return special lock along with openhandle, if
1607 requested and client is allowed to hold openhandle, even if unused,
1608 until such a lock is revoked. Helps NFS a lot, since NFS is opening
1609 closing files for every read/write openration.
1611 Severity : Enhancement
1613 Description: Cache open negative dentries on client when possible.
1614 Details : Guard negative dentries with UPDATE lock on parent dir, drop
1615 negative dentries on lock revocation.
1620 Description: Remounting a client read-only wasn't possible with a zconf mount
1621 Details : It wasn't possible to remount a client read-only with llmount.
1623 Severity : enhancement
1624 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
1625 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
1626 MPICH is included to add Lustre-specific ADIO interfaces.
1627 This is based closely on the UFS ADIO layer and only differs
1628 in file creation, in order to allow the OST striping to be set.
1629 This is user-contributed code and not supported by CFS.
1634 Description: extended inode attributes (immutable, append-only) work improperly
1635 when 2.4 and 2.6 kernels are used on client/server or vice versa
1636 Details : Introduce kernel-independent values for these flags.
1638 Severity : enhancement
1641 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
1642 Details : Many of the /proc/ tunables can only be tuned at a megabyte
1643 granularity. Now, Fractional MB granularity is be supported,
1644 this is very useful for low memory system.
1646 Severity : enhancement
1648 Description: Getattr by fid
1649 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
1650 locks, avoids extra getattr rpc requests to MDS, allows '/' to
1651 have locks and avoids getattr rpc requests for it on every stat.
1654 Frequency : Always, for filesystems larger than 2TB
1656 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1657 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
1658 filesystems larger than 2TB to be mounted with mballoc enabled.
1661 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
1663 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1664 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
1665 filesystems larger than 2TB is mounted then the kernel will
1666 silently corrupt the start of the filesystem. CONFIG_LBD is
1667 enabled for all CFS-supported kernels, but the possibility of
1668 this happening with a modified kernel config exists.
1670 Severity : enhancement
1672 Description: add client O_DIRECT support for 2.6 kernels
1673 Details : It is now possible to do O_DIRECT reads and writes to files
1674 in the Lustre client mountpoint on 2.6 kernel clients.
1676 Severity : enhancement
1678 Description: parallel glimpse, setattr, statfs, punch, destroy requests
1679 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
1680 parallel, not waiting for response from every OST before sending
1681 a rpc to the next OST.
1686 Description: setattr vs write race when updating file timestamps
1687 Details : Client processes that update a file timestamp into the past
1688 right after writing to the file (e.g. tar) it is possible that
1689 the updated file modification time can be reset to the current
1690 time due to a race between processing the setattr and write RPC.
1692 Severity : enhancement
1694 Description: Bring 'lfs find' closer in line with regular Linux find.
1695 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
1696 -print0 options and obtains all the needed info through the lustre
1699 Severity : enhancement
1701 Description: support up to 1024 configured devices on one node
1702 Details : change obd_dev array from statically allocated to dynamically
1703 allocated structs as they are first used to reduce memory usage
1708 Description: Flush dirty partially truncated pages during truncate
1709 Details : Immediatelly flush partially truncated pages in filter_setattr,
1710 this way we completely avoid having any pages in page cache on OST
1711 and can retire ugly workarounds during writes to flush such pages.
1716 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1717 Details : protect inode from truncation within vfs_unlink() context
1718 just take a reference before calling vfs_unlink() and release it
1719 when parent's i_sem is free.
1724 Description: last_id value checked outside lock on OST caused LASSERT failure
1725 Details : If there were multiple MDS->OST object precreate requests in
1726 flight, it was possible that the OST's last object id was checked
1727 outside a lock and incorrectly tripped an assertion. Move checks
1728 inside locks, and discard old precreate requests.
1731 Frequency : always, if extents are used on OSTs
1733 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1734 Details : OSTs using the extents format would not zero the high 16 bits of
1735 the index physical block number. This is not a problem for any
1736 OST filesystems smaller than 16TB, and no kernels support ext3
1737 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1738 new/modified files) and can be fixed for existing filesystems
1739 with e2fsprogs-1.39-cfs1.
1744 Description: import connection selection may be incorrect if timer wraps
1745 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1746 import connections to be ignored if the 32-bit jiffies counter
1747 wraps. Use a 64-bit jiffies counter.
1750 Frequency : very large clusters immediately after boot
1752 Description: LNET request buffers exhausted under heavy short-term load
1753 Details : If a large number of client requests are generated on a service
1754 that has previously never seen so many requests it is possible
1755 that the request buffer growth cannot keep up with the spike in
1756 demand. Instead of dropping incoming requests, they are held in
1757 the LND until the RPC service can accept more requests.
1760 Frequency : Sometimes during replay
1762 Description: Assertion failure in ll_local_open after replay.
1763 Details : If replay happened on an open request reply before we were able
1764 to set replay handler, reply will become not swabbed tripping the
1765 assertion in ll_local_open. Now we set the handler right after
1766 recognising of open request
1769 Frequency : very rare
1771 Description: kernel reports "badness in vsnprintf"
1772 Details : Reading from the "recovery_status" /proc file in small chunks
1773 may cause a negative length in lprocfs_obd_rd_recovery_status()
1774 call to vsnprintf() (which is otherwise harmless). Exit early
1775 if there is no more space in the output buffer.
1777 Severity : enhancement
1779 Description: clear OBD RPC statistics by writing to them
1780 Details : It is now possible to clear the OBD RPC statistics by writing
1781 to the "stats" file.
1786 Description: Client mtime is not the same on different clients after utimes
1787 Details : In some cases, the client was using the utimes() syscall on
1788 a file cached on another node. The clients now validate the
1789 ctime from the MDS + OSTs to determine which one is right.
1794 Description: Inability to activate failout mode
1795 Details : lconf script incorrectly assumed that in pythong string's numeric
1796 value is used in comparisons.
1799 Frequency : always with multiple stripes per file
1801 Description: Inefficient object allocation for mutli-stripe files
1802 Details : When selecting which OSTs to stripe files over, for files with
1803 a stripe count that divides evenly into the number of OSTs,
1804 the MDS is always picking the same starting OST for each file.
1805 Return the OST selection heuristic to the original design.
1810 Description: mount failures may take full timeout to return an error
1811 Details : Under some heavy load conditions it is possible that a
1812 failed mount can wait for the full obd_timeout interval,
1813 possibly several minutes, before reporting an error.
1814 Instead return an error as soon as the status is known.
1816 Frequency : quota enabled and large files being deleted
1818 Description: releasing more than 4GB of quota at once hangs OST
1819 Details : If a user deletes more than 4GB of files on a single OST it
1820 will cause the OST to spin in an infinite loop. Release
1821 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1826 Description: statfs data retrieved from /proc may be stale or zero
1827 Details : When reading per-device statfs data from /proc, in the
1828 {kbytes,files}_{total,free,avail} files, it may appear
1829 as zero or be out of date.
1832 Frequency : systems with MD RAID1 external journal devices
1834 Description: lconf's call to blkid is confused by RAID1 journal devices
1835 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1836 of returning all block devices that match the journal UUID.
1839 Frequency : always, for aggregate stripe size over 4GB
1841 Description: assertion fails when trying to use 4GB stripe size
1842 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
1843 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
1846 Frequency : always on ppc64
1848 Description: the first write on an ext3 filesystem with mballoc got stuck
1849 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1850 perform endianness conversion.
1852 ------------------------------------------------------------------------------
1854 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1856 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
1857 INTEROPERATE with older versions automatically. Please read the
1858 user documentation before upgrading any part of a live system.
1859 * WARNING: Lustre networking configuration changes are required with
1860 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
1863 * Support for kernels:
1864 2.6.9-22.0.2.EL (RHEL 4)
1865 2.6.5-7.244 (SLES 9)
1866 2.6.12.6 vanilla (kernel.org)
1869 Severity : enhancement
1870 Bugzilla : 7981/8208
1871 Description: Introduced Lustre Networking (LNET)
1872 Details : LNET is new networking infrastructure for Lustre, it includes
1873 a reorganized network configuration mode (see the user
1874 documentation for full details) as well as support for routing
1875 between different network fabrics. Lustre Networking Devices
1876 (LNDs) for the supported network fabrics have also been
1877 created for this new infrastructure.
1879 Severity : enhancement
1880 Description: Introduced Access control lists
1881 Details : clients can set ACLs on files and directories in order to have
1882 more fine-grained permissions than the standard Unix UGO+RWX.
1883 The MDS must be started with the "-o acl" mount option.
1885 Severity : enhancement
1886 Description: Introduced filesystem quotas
1887 Details : Administrators may now establish per-user quotas on the
1890 Severity : enhancement
1892 Description: Configuration change for the XT3
1893 The PTLLND is now used to run Lustre over Portals on the XT3
1894 The configure option(s) --with-cray-portals are no longer used.
1895 Rather --with-portals=<path-to-portals-includes> is used to
1896 enable building on the XT3. In addition to enable XT3 specific
1897 features the option --enable-cray-xt3 must be used.
1902 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
1903 Details : A race between allocating a new llcd and re-getting the llcd_lock
1904 allowed another thread to grab newly-allocated llcd.
1906 Severity : enhancement
1908 Description: 2.6 OST async journal commit and locking fix to improve performance
1909 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
1910 2.6 kernels are now async as they already were in 2.4 kernels so
1911 that they can commit concurrently with the network bulk transfer.
1912 For block-allocated files the filter allocation semaphore is held
1913 to avoid filesystem fragmentation during allocation. BKL lock
1914 removed for 2.6 xattr operations where it is no longer needed.
1919 Description: lconf incorrectly determined whether two IP networks could talk
1920 Details : In some more complicated routing and multiple-network
1921 configurations, lconf will avoid trying to make a network
1922 connection to a disjoint part of the IP space. It was doing the
1923 math incorrectly for one set of cases.
1928 Description: Fix for potential infinite loop processing records in an llog.
1929 Details : If an llog record is corrupted/zeroed, it is possible to loop
1930 forever in llog_process(). Validate the llog record length
1931 and skip the remainder of the block on error.
1934 Frequency : occasional (liblustre only)
1936 Description: liblustre could not open files whose last component is a symlink
1937 Details : sysio_path_walk() would incorrectly pass the open intent to
1938 intermediate path components.
1941 Frequency : rare (liblustre only with non-standard tuning)
1942 Bugzilla : 7201 (7350)
1943 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
1944 Details : llu_lookup_finish_locks() tries to set lock data on a lock
1945 after it has been released, only do this for referenced locks
1947 Severity : enhancement
1949 Description: specifying an (invalid) directory default stripe_size of -1
1950 would reset the directory default striping
1951 Details : stripe_size -1 was used internally to signal directory stripe
1952 removal, now use "all default" to signal dir stripe removal
1953 as a directory striping of "all default" is not useful
1956 Frequency : common for large clusters running liblustre clients
1958 Description: doing an ls when liblustre clients are running is slow
1959 Details : sending a glimpse AST to a liblustre client waits for every AST
1960 to time out, as liblustre clients will not respond. Since they
1961 cannot cache data we refresh the OST lock LVB from disk instead.
1963 Severity : enhancement
1965 Description: doing an ls at the same time as file IO can be slow
1966 Details : enqueue and other "small" requests can be blocked behind many
1967 large IO requests. Create a new OST IO portal for non-IO
1968 requests so they can be processed faster.
1971 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
1973 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
1974 created file with mode 000
1975 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
1976 allow an ftruncate() as a non-root user to a file with mode 000.
1977 Lustre now respects this flag to disable mode checks when
1978 truncating a file owned by the user
1981 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
1984 Description: Revoking locks from clients that went dead or catatonic might take
1986 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
1987 cancellation of such locks instant on servers without waiting for
1988 any reply from clients. Clients drops these locks when cancel
1989 notification from server is received without replying.
1992 Frequency : liblustre-only, when liblustre client dies or becomes busy
1994 Description: Doing ls on Linux clients can take a long time with active
1996 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
1997 granting such locks to it in the first place if possible. Locks
1998 are taken by proxy on the OST during the read or write and
1999 dropped immediately afterward. Add connect flags handling, do
2000 not grant locks to liblustre clients for glimpse ASTs.
2002 Severity : enhancement
2004 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
2005 Details : Existing read-ahead algorithm is tuned for the case of streamlined
2006 sequential reads and behaves badly with applications doing random
2007 reads. Improve it by reading ahead at least read region, and
2008 avoiding excessive large RPC for small reads.
2010 Severity : enhancement
2012 Description: Creating more than 1000 files for a single job may cause a load
2013 imbalance on the OSTs if there are also a large number of OSTs.
2014 Details : qos_prep_create() uses an OST index reseed value that is an
2015 even multiple of the number of available OSTs so that if the
2016 reseed happens in the middle of the object allocation it will
2017 still utilize the OSTs as uniformly as possible.
2022 Description: OST or MDS may oops in ping_evictor_main()
2023 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
2024 but doesn't restart at beginning of obd_exports_timed list
2027 Severity : enhancement
2029 Description: improve by-nid export eviction on the MDS and OST
2030 Details : allow multiple exports with the same NID to be evicted at one
2031 time without re-searching the exports list.
2034 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
2036 Description: MDS may oops in groups_free()
2037 Details : in rare race conditions a newly allocated group_info struct is
2038 freed again, and this can be NULL. The 2.4 compatibility code
2039 for groups_free() checked for a NULL pointer, but 2.6 did not.
2042 Frequency : common for liblustre clients doing little filesystem IO
2043 Bugzilla : 9352, 7313
2044 Description: server may evict liblustre clients accessing contended locks
2045 Details : if a client is granted a lock or receives a completion AST
2046 with a blocking AST already set it would not reply to the AST
2047 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
2050 Frequency : lfs setstripe, only systems with more than 160 OSTs
2052 Description: unable to set striping with a starting offset beyond OST 160
2053 Details : llapi_create_file() incorrectly limited the starting stripe
2054 index to the maximum single-file stripe count.
2057 Frequency : LDAP users only
2059 Description: lconf did not handle in-kernel recovery with LDAP properly
2060 Details : lconf/LustreDB get_refs() is searching the wrong namespace
2062 Severity : enhancement
2064 Description: bind OST threads to NUMA nodes to improve performance
2065 Details : all OST threads are uniformly bound to CPUs on a single NUMA
2066 node and do their allocations there to localize memory access
2068 Severity : enhancement
2070 Description: llmount can determine client NID directly from Myrinet (GM)
2071 Details : the client NID code from gmnalnid was moved directly into
2072 llmount, removing the need to use this or specifying the
2073 client NID explicitly when mounting GM clients with zeroconf
2076 Frequency : if client is started with down MDS
2078 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
2079 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
2080 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
2081 ptlrpc_import_delayed_req() because we didn't check if the
2082 request was interrupted, and we also didn't break out of the
2083 event loop if there was no timeout
2088 Description: data loss during non-page-aligned writes to a single file from
2089 both multiple nodes and multiple threads on one node at same time
2090 Details : updates to KMS and lsm weren't protected by common lock. Resulting
2091 inconsistency led to false short-reads, that were cached and later
2092 used by ->prepare_write() to fill in partially written page,
2093 leading to data loss.
2096 Frequency : always, if lconf --abort_recovery used
2098 Description: lconf --abort_recovery fails with 'Operation not supported'
2099 Details : lconf was attempting to abort recovery on the MDT device and not
2102 Severity : enhancement
2104 Description: remove cleanup logs
2105 Details : replace lconf-generated cleanup logs with lustre internal
2106 cleanup routines. Eliminates the need for client-cleanup and
2109 Severity : enhancement
2111 Description: add support for EAs (user and system) on lustre filesystems
2112 Details : it is now possible to store extended attributes in the Lustre
2113 client filesystem, and with the user_xattr mount option it
2114 is possible to allow users to store EAs on their files also
2116 Severity : enhancement
2118 Description: Add possibility (config option) to show minimal available OST free
2120 Details : When compiled with --enable-mindf configure option, statfs(2)
2121 (and so, df) will return least minimal free space available from
2122 all OSTs as amount of free space on FS, instead of summary of
2123 free spaces of all OSTs.
2125 Severity : enhancement
2127 Description: do not expand extent locks acquired on OST-side
2128 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
2129 by server: they are not cached anyway.
2132 Frequency : when mmap is used/binaries executed from Lustre
2134 Description: Unmmap pages before throwing them away from read cache.
2135 Details : llap_shrink cache now attempts to unmap pages before discarding
2136 them (if unmapping failed - do not discard). SLES9 kernel has
2137 extra checks that trigger if this unmapping is not done first.
2142 Description: lconf didn't resolve symlinks before checking to see whether a
2143 given mountpoint was already in use
2146 Frequency : when migrating failover services
2147 Bugzilla : 6395, 9514
2148 Description: When migrating a subset of services from a node (e.g. failback
2149 from a failover service node) the remaining services would
2150 time out and evict clients.
2151 Details : lconf --force (implied by --failover) sets the global obd_timeout
2152 to 5 seconds in order to quickly disconnect, but this caused
2153 other RPCs to time out too quickly. Do not change the global
2154 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
2156 Severity : enhancement
2157 Frequency : if MDS is started with down OST
2158 Bugzilla : 9439,5706
2159 Description: Allow startup/shutdown of an MDS without depending on the
2160 availability of the OSTs.
2161 Details : Asynchronously call mds_lov_synchronize during MDS startup.
2162 Add appropriate locking and lov-osc refcounts for safe
2163 cleaning. Add osc abort_inflight calls in case the
2164 synchronize never started.
2167 Frequency : occasional (Cray XT3 only)
2169 Description: root not authorized to access files in CRAY_PORTALS environment
2170 Details : The client process capabilities were not honoured on the MDS in
2171 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
2172 been accessed by an authorized user then root was able to access
2173 the file on the local client also. The root user capabilities
2174 are now allowed on the MDS, as this environment has secure UID.
2177 Frequency : occasional
2179 Description: ldiskfs "too long searching" message happens too often
2180 Details : A debugging message (otherwise harmless) prints too often on
2181 the OST console. This has been reduced to only happen when
2182 there are fragmentation problems on the filesystem.
2187 Description: Division by zero in statfs when all OSCs are inactive
2188 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
2189 lov_statfs divides by value returned by lov_get_stripecnt().
2193 Bugzilla : 9489, 3273
2194 Description: First write from each client to each OST was only 4kB in size,
2195 to initialize client writeback cache, which caused sub-optimal
2196 RPCs and poor layout on disk for the first writen file.
2197 Details : Clients now request an initial cache grant at (re)connect time
2198 and so that they can start streaming writes to the cache right
2199 away and always do full-sized RPCs if there is enough data.
2200 If the OST is rebooted the client also re-establishes its grant
2201 so that client cached writes will be honoured under the grant.
2206 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
2207 Details : Now I/O RPCs go to different portal number and (presumably) fast
2208 lock requests (and glimses) and other RPCs get their own service
2209 threads pool that should be able to service those RPCs
2212 Severity : enhancement
2214 Description: Ability to exchange lustre version between client and servers and
2215 issue warnings at client side if client is too old. Also for
2216 liblustre clients there is ability to refuse connection of too old
2218 Details : New 'version' field is added to connect data structure that is
2219 filled with version info. That info is later checked by server and
2223 Frequency : rare, liblustre only.
2224 Bugzilla : 9296, 9581
2225 Description: Two simultaneous writes from liblustre at offset within same page
2226 might proceed at the same time overwriting eachother with stale
2228 Details : I/O lock withing llu_file_prwv was released too early, before data
2229 actually was hitting the wire. Extended lock-holding time until
2230 server acknowledges receiving data.
2233 Frequency : extremely rare. Never observed in practice.
2235 Description: avoid generating lustre_handle cookie of 0.
2236 Details : class_handle_hash() generates handle cookies by incrementing
2237 global counter, and can hit 0 occasionaly (this is unlikely, but
2238 not impossible, because initial value of cookie counter is
2239 selected randonly). Value of 0 is used as a sentinel meaning
2240 "unassigned handle" --- avoid it. Also coalesce two critical
2241 sections in this function into one.
2243 Severity : enhancement
2245 Description: allow liblustre clients to delegate truncate locking to OST
2246 Details : To avoid overhead of locking, liblustre client instructs OST to
2247 take extent lock in ost_punch() on client's behalf. New connection
2248 flag is added to handle backward compatibility.
2250 Severity : enhancement
2251 Bugzilla : 4928, 7341, 9758
2252 Description: allow number of OST service threads to be specified
2253 Details : a module parameter allows the number of OST service threads
2254 to be specified via "options ost ost_num_threads={N}" in the
2255 OSS's /etc/modules.conf or /etc/modprobe.conf.
2259 Bugzilla : 6146, 9635, 9895
2260 Description: servers crash with bad pointer in target_handle_connect()
2261 Details : In rare cases when a client is reconnecting it was possible that
2262 the connection request was the last reference for that export.
2263 We would temporarily drop the export reference and get a new
2264 one, but this may have been the last reference and the export
2265 was just destroyed. Get new reference before dropping old one.
2267 Severity : enhancement
2268 Frequency : if client is started with failover MDS
2270 Description: Allow multiple MDS hostnames in the mount command
2271 Details : Try to read the configuration from all specified MDS
2272 hostnames during a client mount in case the "primary"
2275 Severity : enhancement
2277 Description: Stop sending data to evicted clients as soon as possible.
2278 Details : Check if the client we are about to send or are sending data to
2279 was evicted already. (Check is done every second of waiting,
2280 for which l_wait_event interface was extended to allow checking
2281 of exit condition at specified intervals).
2284 Frequency : rare, normally only when NFS exporting is done from client
2286 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
2288 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
2291 Frequency : always, if srand() is called before liblustre initialization
2293 Description: Liblustre uses system PRNG disturbing its usage by user application
2294 Details : Introduce internal to lustre fast and high-quality PRNG for
2295 lustre usage and make liblustre and some other places in generic
2296 lustre code to use it.
2298 Severity : enhancement
2299 Bugzilla : 9477, 9557, 9870
2300 Description: Verify that the MDS configuration logs are updated when xml is
2301 Details : Check if the .xml configuration logs are newer than the config
2302 logs stored on the MDS and report an error if this is the case.
2303 Request --write-conf, or allow starting with --old_conf.
2305 Severity : enhancement
2307 Description: Handle symlinks in the path when checking if Lustre is mounted.
2308 Details : Resolve intermediate symlinks when checking if a client has
2309 mounted a filesystem to avoid duplicate client mounts.
2314 Description: lconf can hit an error exception but still return success.
2315 Details : The lconf command catches the Command error exception at the top
2316 level script context and will exit with the associated exit
2317 status, but doesn't ensure that this exit status is non-zero.
2322 Description: failure of ptlrpc thread startup can cause oops
2323 Details : Starting a ptlrpc service thread can fail if there are a large
2324 number of threads or the server memory is very fragmented.
2325 Handle this without oopsing.
2328 Frequency : always, only if liblustre and non-default acceptor port was used
2330 Description: liblustre cannot connect to servers with non-default acceptor port
2331 Details : tcpnal_set_default_params() was not called and was therefore
2332 ignoring the environment varaible TCPNAL_PORT, as well as other
2333 TCPNAL_ environment variables
2338 Description: two objects could be created on the same OST for a single file
2339 Details : If an OST is down, in some cases it was possible to create two
2340 objects on a single OST for a single file. No problems other
2341 than potential performance impact and spurious error messages.
2345 Bugzilla : 5681, 9562
2346 Description: Client may oops in ll_unhash_aliases
2347 Details : Client dcache may become inconsistent in race condition.
2348 In some cases "getcwd" can fail if the current directory is
2354 Description: Inode refcounting problems in NFS export code
2355 Details : link_raw functions used to call d_instantiate without obtaining
2356 extra inode reference first.
2360 Bugzilla : 9942, 9903
2361 Description: Referencing freed requests leading to crash, memleaks with NFS.
2362 Details : We used to require that call to ll_revalidate_it was always
2363 followed by ll_lookup_it. Also with revalidate_special() it is
2364 possible to call ll_revalidate_it() twice for the same dentry
2365 even if first occurence returned success. This fix changes semantic
2366 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
2367 reference on a request referred from the intent.
2368 ll_intent_release() then releases such a request.
2371 Frequency : rare, normally benchmark loads only
2373 Description: unlinked inodes were kept in memory on the client
2374 Details : If a client is repeatedly creating and unlinking files it
2375 can accumulate a lot of stale inodes in the inode slab cache.
2376 If there is no other client load running this can cause the
2377 client node to run out of memory. Instead flush old inodes
2378 from client cache that have the same inode number as a new inode.
2381 Frequency : SLES9 2.6.5 kernel and long filenames only
2382 Bugzilla : 9969, 10379
2383 Description: utime reports stale NFS file handle
2384 Details : SLES9 uses out-of-dentry names in some cases, which confused
2385 the lustre dentry revalidation. Change it to always use the
2389 Frequency : rare, unless heavy write-truncate concurrency is continuous
2390 Bugzilla : 4180, 6984, 7171, 9963, 9331
2391 Description: OST becomes very slow and/or deadlocked during object unlink
2392 Details : filter_destroy() was holding onto the parent directory lock
2393 while truncating+unlinking objects. For very large objects this
2394 may block other threads for a long time and slow overall OST
2395 responsiveness. It may also be possible to get a lock ordering
2396 deadlock in this case, or run out of journal credits because of
2397 the combined truncate+unlink. Solution is to do object truncate
2398 first in one transaction without parent lock, and then do the
2399 final unlink in a new transaction with the parent lock. This
2400 reduces the lock hold time dramatically.
2403 Frequency : rare, 2.4 kernels only
2405 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
2406 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
2407 before unmounting their filesystem in order to avoid deadlock.
2408 The kernel_locked() function in 2.4 kernels only checks whether
2409 the kernel lock is held, not whether it is this process that is
2410 holding it as 2.6 kernels do.
2415 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
2416 Details : The client ptlrpc code may be trying to reconnect to a down
2417 server before a previous connection attempt has timed out.
2418 Increase the reconnect interval to be longer than the connection
2419 timeout interval to avoid sending duplicate connections to
2423 Frequency : echo_client brw_test command
2425 Description: fix echo_client to work with OST preallocated code
2426 Details : OST preallocation code (5137) didn't take echo_client IO path
2427 into account: echo_client calls filter methods outside of any
2428 OST thread and, hence, there is no per-thread preallocated
2429 pages and buffers to use. Solution: hijack pga pages for IO. As
2430 a byproduct, this avoids unnecessary data copying.
2434 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
2435 Description: Client can oops in mdc_commit_close() after open replay
2436 Details : It was possible for the MDS to return an open request with no
2437 transaction number in mds_finish_transno() if the client was
2438 evicted, but without actually returning an error. Clients
2439 would later try to replay that open and may trip an assertion
2440 Simplify the client close codepath, and always return an error
2441 from the MDS in case the open is not successful.
2444 Frequency : rare, 2.6 OSTs only
2446 Description: OST may deadlock under high load on fragmented files
2447 Details : If there was a heavy load and highly-fragmented OST filesystems
2448 it was possible to have all the OST threads deadlock waiting on
2449 allocation of biovecs, because the biovecs were not released
2450 until the entire RPC IO was completed. Instead, release biovecs
2451 as soon as they are complete to ensure forward IO progress.
2453 Severity : enhancement
2455 Description: Support for specifying external journal device at mount
2456 Details : If an OST or MDS device is formatted with an external journal
2457 device, this device major/minor is stored in the ext3 superblock
2458 and may not be valid for failover. Allow detecting and
2459 specifying the external journal at mount time.
2464 Description: Mounting an MDS with pending unlinked files may cause oops
2465 Details : target_finish_recovery() calls mds_postrecov() which returned
2466 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
2467 considers this an error and immediately begins cleaning up the
2468 lov, just after starting the mds_lov process
2470 Severity : enhancement
2472 Description: Implement 'lfs df' to report actual free space on per-OST basis
2473 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
2474 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
2475 usage of objects; '-h' to report in human readable format.
2477 ------------------------------------------------------------------------------
2479 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
2486 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
2487 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
2488 at startup during orphan unlinking. Instead, skip buddy update
2489 before setup, as it will be regenerated after recovery is complete.
2494 Description: If an OST is inactive, its locks might reference stale inodes.
2495 Details : lov_change_cbdata() must iterate over all namespaces, even if
2496 they are inactive to clear inode references from the lock.
2498 Severity : enhancement
2499 Frequency : occasional, if non-standard max_dirty_mb used
2501 Description: Client will block write RPCs if not enough grant
2502 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
2503 then the client will block writes while waiting for another RPC
2504 to complete instead of consuming its dirty limit. With change
2505 we get improved performance when max_dirty_mb is small.
2507 Severity : enhancement
2508 Bugzilla : 3389, 6253
2509 Description: Add support for supplementary groups on the MDS.
2510 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
2511 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
2512 lookups for user supplementary groups into a cache.
2516 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
2517 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
2518 for liblustre O_EXCL is enforced by MDS.
2522 Description: readdir never returns NULL in liblustre.
2523 Details : Corrected llu_iop_getdirentries logic, to return offset of next
2524 dentry in struct dirent.
2528 Frequency : liblustre only, depends on application IO pattern
2529 Description: liblustre clients evicted if not contacting servers
2530 Details : Don't put liblustre clients into the ping_evictor list, so
2531 they will not be evicted by the pinger ever.
2533 Severity : enhancement
2535 Description: Add ability to evict clients by NID from MDS.
2536 Details : By echoing "nid:$NID" string into
2537 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
2538 $NID would be instantly evicted from this MDS and from all active
2539 OSTs connected to it.
2543 Description: Do not query file size twice, somewhat slowing stat(2) calls.
2544 Details : lookup_it_finish() used to query file size from OSTs that was not
2549 Description: service threads change working directory to that of init
2550 Details : Starting lustre service threads may pin the working directory
2551 of the parent thread, making that filesystem busy. Threads
2552 now change to the working directory of init to avoid this.
2556 Frequency : during shutdown only
2557 Description: shutdown with a failed MDS or OST can cause unmount to hang
2558 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
2563 Frequency : 2.6 only
2564 Description: chmod/chown may include an extra supplementary group
2565 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
2566 supplementary group and if none is specified this is used.
2569 Bugzilla : 5479 (6816)
2571 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
2572 Details : If lookup is in progress on a file that is unlinked we might try
2573 to revalidate the inode and fail in revalidate after lookup is
2574 complete and ll_file_open() enqueues the open again but
2575 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
2578 Frequency : always, if lconf --abort_recovery used
2580 Description: lconf --abort_recovery fails with 'Operation not supported'
2581 Details : lconf was attempting to abort recovery on the MDT device and not
2584 ------------------------------------------------------------------------------
2586 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
2591 Frequency : rare (only unsupported configurations with a node running as an
2593 Bugzilla : 6514, 5137
2594 Description: Mounting a Lustre file system on a node running as an OST could
2596 Details : OSTs now preallocates memory needed to write out data at
2597 startup, instead of when needed, to avoid having to
2598 allocate memory in possibly low memory situations.
2599 Specifically, if the file system is mounted on on OST,
2600 memory pressure could force it to try to write out data,
2601 which it needed to allocate memory to do. Due to the low
2602 memory, it would be unable to do so and the node would
2603 become unresponsive.
2605 Severity : enhancement
2607 Description: Addition of lconf --service command line option
2608 Details : lconf now accepts a '--service <arg>' option, which is
2609 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
2611 Severity : enhancement
2613 Description: Failover mode is now the default for OSTs.
2614 Details : By default, OSTs will now run in failover mode. To return to
2615 the old behaviour, add '--failout' to the lmc line for OSTs.
2617 Severity : enhancement
2619 Description: Health checks are now provided for MDS and OSTs
2620 Details : Additional detailed health check information on MSD and OSTs
2621 is now provided through the procfs health_check value.
2624 Frequency : occasional, depends on IO load
2626 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
2627 after numerous create/delete cycles
2628 Details : The ext3 inode allocation policy would not allocate new inodes
2629 very well on the OSTs because there are no new directories
2630 being created. Instead we look for groups with free space if
2631 the parent directories are nearly full.
2636 Description: Network or server problems during mount may cause partially
2637 mounted clients instead of returning an error.
2638 Details : The config llog parsing code may overwrite the error return
2639 code during mount error handling, returning success instead
2645 Description: MDS can fail to allocate large reply buffers
2646 Details : After long uptimes the MDS can fail to allocate large reply
2647 buffers (e.g. zconf client mount config records) due to memory
2648 fragmentation or consumption by the buffer cache. Preallocate
2649 some large reply buffers so that these replies can be sent even
2650 under memory pressure.
2654 Frequency : rare (liblustre)
2655 Description: fsx running with liblustre complained that using truncate() to
2656 extend the file doesn't work. This patch corrects that issue.
2657 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
2658 ATTR_SIZE and lsm use in llu_setattr_raw.
2662 Frequency : rare, only 2.6 kernels
2663 Description: Unusual file access patterns on the MDS may result in inode
2664 data being lost in very rare circumstances.
2665 Details : Bad interaction between the ea-in-inode patch and the "no-read"
2666 code in the 2.6 kernel caused the inode and/or EA data not to
2667 be read from disk, causing single-file corruption.
2671 Frequency : rare, only 2.6 filesystems using extents
2672 Description: Heavy concurrent write and delete load may cause data corruption.
2673 Details : It was possible under high-load situations to have an extent
2674 metadata block in the block device cache from a just-unlinked
2675 file overwrite a newly-allocated data block. We now unmap any
2676 metadata buffers that alias just-allocated data blocks.
2680 Frequency : filesystems with default stripe_count larger than 77
2681 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
2682 Details : lconf specifies an inode size of 4096 bytes when the default
2683 stripe_count is larger than 77. This conflicts with the default
2684 inode density of 1 per 4096 bytes. Allocate smaller inodes in
2685 this case to avoid pinning too much memory for large EAs.
2687 ------------------------------------------------------------------------------
2689 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
2694 Frequency : rare (extremely heavy IO load with hundreds of clients)
2696 Description: Client is evicted, gets IO error writing to file
2697 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
2698 caused clients to be evicted for AST timeouts. The fixes in
2699 bug 5192 mean we no longer need to have such short AST timeouts
2700 so ldlm_timeout has been increased.
2703 Frequency : occasional during --force or --failover shutdown under load
2704 Bugzilla : 5949, 4834
2705 Description: Server oops/LBUG if stopped with --force or --failover under load
2706 Details : a collection of import/export refcount and cleanup ordering
2707 issues fixed for safer force cleanup
2710 Frequency : only filesystems larger than 120 OSTs
2711 Bugzilla : 5990, 6223
2712 Description: lfs getstripe would oops on a very large filesystem
2713 Details : lov_getconfig used kfree on vmalloc'd memory
2716 Frequency : only filesystems exporting via NFS to Solaris 10 clients
2717 Bugzilla : 6242, 6243
2718 Description: reading from files that had been truncated to a non-zero size
2719 but never opened returned no data
2720 Details : ll_file_read() reads zeros from no-object files to EOF
2725 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
2726 Details : There's little harm in aborting MDS/OSS recovery and letting it
2727 try again, so I removed the LASSERT and return an error instead.
2729 Severity : enhancement
2731 Description: New debugging infrastructure for tracking down data corruption
2732 Details : The I/O checksum code was replaced to: (a) control it at runtime,
2733 (b) cover more of the client-side code path, and (c) try to narrow
2734 down where problems occurred
2738 Bugzilla : 3819, 4364, 4397, 6313
2739 Description: Racing close and eviction MDS could cause assertion in mds_close
2740 Details : It was possible to get multiple mfd references during close and
2741 client eviction, leading to one thread referencing a freed mfd.
2743 Severity: : enhancement
2744 Bugzilla : 3262, 6359
2745 Description: Attempts to reconnect to servers are now more aggressive.
2746 Details : This builds on the enhanced upcall-less recovery that was added
2747 in 1.4.2. When trying to reconnect to servers, clients will
2748 now try each server in the failover group every 10 seconds. By
2749 default, clients would previously try one server every 25 seconds.
2754 Description: After recovery, certain operations trigger a failed
2755 assertion on a client.
2756 Details : Failing over an mds, using lconf -d --failover, while a
2757 client was doing a readdir() call would cause the client to
2758 LBUG after recovery completed and the readdir() was resent.
2760 Severity : enhancement
2762 Description: Default groups are now added by lconf
2763 Details : You can now run lconf --group <servicename> without having to
2764 manually add groups with lmc.
2767 Frequency : occasional
2769 Description: Nodes with an elan id of 0 trigger a failed assertion
2772 Frequency : always when accessing e.g. tty/console device nodes
2774 Description: tty and some other devices nodes cannot be used on lustre
2775 Details : file's private_data field is used by device data and lustre
2776 values in there got lost. New field was added to struct file to
2777 store fs-specific private data.
2780 Frequency : when exporting Lustre via NFS
2782 Description: NFSD failed occasionally when looking up a path component
2783 Details : NFSD is looking up ".." which was broken in ext3 directories
2784 that had grown large enough to become hashed.
2787 Frequency : Clusters with multiple interfaces not on the same subnet
2789 Description: Nodes will repeatedly try to reconnect to an interface which it
2790 cannot reach and report an error to the log.
2791 Details : Extra peer list entries will be created by lconf with some peers
2792 unreachable. lconf now validates the peer before adding it.
2795 Frequency : Only if a default stripe is set on the filesystem root.
2797 Description: Setting a default stripe on the filesystem root prevented the
2798 filesystem from being remounted.
2799 Details : The client was sending extra request flags in the root getattr
2800 request and did not allocate a reply buffer for the dir EA.
2803 Frequency : occasional, higher if lots of files are accessed by one client
2804 Bugzilla : 6159, 6097
2805 Description: Client trips assertion regarding lsm mismatch/magic
2806 Details : While revalidating inodes the VFS looks up inodes with ifind()
2807 and in rare cases can find an inode that is being freed.
2808 The ll_test_inode() code will free the lsm during ifind()
2809 when it finds an existing inode and then the VFS later attaches
2810 this free lsm to a new inode.
2814 Bugzilla : 6422, 7030
2815 Description: MDS deadlock between mkdir and client eviction
2816 Details : Creating a new file via mkdir or mknod (starting a transaction
2817 and getting the ns lock) can deadlock with client eviction
2818 (gets ns lock and trying to finish a synchronous transaction).
2821 Frequency : occasional
2822 Description: While starting a server, the fsfilt_ext3 module could not be
2824 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
2825 kernels. Previously, lconf would still use the ext3 name
2826 when trying to load modules. Now, it will correctly use
2827 ext3 on 2.4 and ldiskfs on 2.6.
2829 Severity : enhancement
2830 Description: The default stripe count has been changed to 1
2831 Details : The interpretation of the default stripe count (0, to lfs
2832 or lmc) has been changed to mean striping across a single
2833 OST, rather than all available. For general usage we have
2834 found a stripe count of 1 or 2 works best.
2836 Severity : enhancement
2837 Description: Add support for compiling against Cray portals.
2838 Details : Conditional compiling for some areas that are different
2842 Frequency : occasional
2843 Bugzilla : 6409, 6834
2844 Description: Creating files with an explicit stripe count may lead to
2845 a failed assertion on the MDS
2846 Details : If some OSTs are full or unavailable, creating files may
2847 trigger a failed assertion on the MDS. Now, Lustre will
2848 try to use other servers or return an error to the
2852 Frequency : occasional
2854 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
2855 caused lock timeout during readahead (since 1.4.2).
2856 Details : Processes doing readahead might match a lock that hasn't been
2857 granted yet if there are overlapping and conflicting lock
2858 requests. The readahead process waits on ungranted lock
2859 (original lock is CBPENDING), while OST waits for that process
2860 to cancel CBPENDING read lock and eventually evicts client.
2862 Severity : enhancement
2864 Description: Initial enabling of flock support for clients
2865 Details : Implements fcntl advisory locking and file status functions.
2866 This feature is provided as an optional mount flag (default
2867 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
2868 locking are implemented yet, and those that are are not guaranteed
2869 to be completely correct in production environments.
2870 mount -t lustre -o [flock|noflock] ...
2873 Frequency : occasional
2875 Description: OSTs running 2.4 kernels but with extents enabled might trip an
2876 assertion in the ext3 JBD (journaling) layer.
2877 Details : The b_committed_data struct is protected by the big kernel lock
2878 in 2.4 kernels, serializing journal_commit_transaction() and
2879 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
2880 access to this struct. In 2.6 kernels there is finer grained
2881 locking to improve SMP performance of the JBD layer.
2885 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
2890 Description: merge and cleanup kernel patches.
2893 -----------------------------------------------------------------------------
2895 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
2897 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
2898 versions of Lustre. Please update all servers and clients to
2899 version 1.4.2 or later at the same time. You must also run
2900 "lconf --write-conf {config}.xml" on the MDS while it is stopped
2901 to update the configuration logs.
2903 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
2904 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
2905 - swab llog records of type '0' so we get proper header size/idx (5861)
2906 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
2907 - fix rename of one directory over another leaking an inode (5953)
2908 - avoid SetPageDirty on 2.6 (5981)
2909 - don't re-add just-being-destroyed locks to the waiting list (5653)
2910 - when creating new directories, inherit the parent's custom
2911 striping settings if present parent (3048)
2912 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
2913 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
2914 - don't hold client locks on temporary worklist from l_lru (5666)
2915 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
2916 - automatically evict dead clients (5921)
2917 - Update file size properly in create+truncate+fstat case (6196)
2918 - Do not unhash mountpoint dentries, do not allow removal of
2920 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
2921 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
2922 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
2923 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
2924 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
2925 - Correctly handle reads of files with no objects (6243)
2926 - lctl recover will also mark a device active if deactivate used (5933)
2928 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
2929 - allow --write-conf on an MDS with different nettype than client (5619)
2930 - don't write config llogs to MDS for mounts not from that MDS (5617)
2931 - lconf should create multiple TCP connections from a client (5201)
2932 - init scripts are now turned off by default; run chkconfig --on
2933 lustre and chkconfig --on lustrefs to use them
2934 - upcalls are no longer needed for clients to recover to failover
2936 - add --abort-recovery option to lconf to abort recovery on device
2938 - add support for an arbitrary number of OSTs (3026)
2939 - Quota support protocol changes.
2940 - forward compatibility changes to wire structs (6007)
2941 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
2942 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
2943 - improved "lustre status" script
2944 - initialize blocksize for non-regular files (6062)
2945 - added --disable-server and --disable-client configure options (5782)
2946 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
2947 - Vanilla 2.4.29 support
2948 - increase maximum number of obd devices to 520 (6242)
2949 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
2950 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
2951 SLES 9 2.6.5 kernels
2952 - limit stripes per file to 160 (the maximum EA size) (6093)
2954 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
2957 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
2958 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
2959 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
2960 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
2961 - small ext3 extents cleanups and fixes (5733)
2962 - improved mballoc code, several small races and bugs fixed (5733, 5638)
2963 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
2964 - avoid needless client->OST connect, fix handle mismatch (5317)
2965 - fix DLM error path that led to out-of-sync client, long delays (5779)
2966 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
2967 - fix several locking issues related to i_size (5492,5624,5654,5672)
2968 - don't move pending lock onto export if it is already evicted (5683)
2969 - fix kernel oops when creating .foo in unlinked directory (5548)
2970 - fix deadlock in obdfilter statistics vs. object create (5811)
2971 - use time_{before,after} to avoid timer jiffies wrap (5882)
2972 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
2973 - Do not leak request if server was not able to process it (5154)
2974 - If mds_open unable to find parent dir, make that negative lookup(5154)
2975 - don't create new directories with extent-mapping (5909, 5936)
2977 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
2978 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
2979 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
2980 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
2981 - support for RHEL4 kernel on i686 (5773)
2982 - provide error messages when incompatible logs are encountered (5898)
2984 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
2985 * version 1.4.0.10 (1.4.1 release candidate 1)
2987 - don't keep a lock reference when lock is not granted (4238)
2988 - unsafe list practices (rarely) led to infinite eviction loop (4908)
2989 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
2990 - drop import inflight refcount on signal_completed_replay error (5255)
2991 - unlock page after async write error during send (3677)
2992 - handle missing objects in filter_preprw_read properly (5265)
2993 - no transno return for symlink open, don't save no-trasno open (3440)
2994 - don't try to complete elan receive that already failed (4012)
2995 - free RPC server reply state on error (5406)
2996 - clean up thread from ptlrpc_start_thread() on error (5160)
2997 - readahead could read extra page into cache that wasn't ejected (5388)
2998 - prevent races in class_attach/setup/cleanup/detach (5260)
2999 - don't dereference de->d_inode after l_dput of de (5458)
3000 - use "int" for stripe value returned from lock_to_stripe (5544)
3001 - mballoc allocation and error-checking fixes in 2.6 (5504)
3002 - block device patches to fix I/O request sizes in 2.6 (5482)
3003 - look up hostnames for IB nals (5602)
3004 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
3005 - don't start multiple acceptors for the same port (5277)
3006 - fix incorrect LASSERT in mds_getattr_name (5635)
3007 - export a proc file for general "ping" checking (5628)
3008 - fix "lfs check" to not block when the MDS is down (5628)
3010 - service request history (4965)
3011 - put {ll,lov,osc}_async_page structs in a single slab (4699)
3012 - create an "evict_client" /proc entry on OSTs, like the MDS has
3013 - fix mount usage message, return errors per mount(8) (5168)
3014 - change grep [] to grep "[]" in tests so they work in more UMLs
3015 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
3016 - remove ancient LOV_MAGIC_V0 EA support (5047)
3017 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
3018 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
3019 - allow readahead allocations to fail when low on memory (5383)
3020 - mmap locking landed again, after considerable improvement (2828)
3021 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
3023 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
3026 - send OST transaction number in read/write reply to free req (4966)
3027 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3028 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3029 - the watchdog thread now runs as interruptible (5246)
3030 - flock/lockf fixes (but it's still disabled, pending 5135)
3031 - don't use EXT3 constants in llite code (5094)
3032 - memory shortage at startup could cause assertion (5176)
3034 - reorganization of lov code
3035 - single portals codebase
3037 - add extents/mballoc support (5025)
3038 - direct I/O reads in the obdfilter (4048)
3039 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
3041 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3044 - send OST transaction number in read/write reply to free req (4966)
3045 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3046 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3047 - the watchdog thread now runs as interruptible (5246)
3048 - handle missing objects in filter_preprw_read properly (5265)
3049 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3050 - drop import inflight refcount on signal_completed_replay error (5255)
3051 - unlock page after async write error during send (3677)
3052 - return original error code on reconstructed replies (3761)
3053 - no transno return for symlink open, don't save no-trasno open (3440)
3055 - add pid to ldlm debugging output (4922)
3056 - bump the watchdog timeouts -- we can't handle 30sec yet
3057 - extra debugging for orphan dentry/inode bug (5259)
3059 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
3062 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
3063 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
3064 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
3065 - fix NULL dereference in /proc/sys/portals/routes (4827)
3066 - allow failed mdc_close() operations to be interrupted (4561)
3067 - stop precreate on OST before MDS would time out on it (4778)
3068 - don't send partial-page writes before EOF from client (4410)
3069 - discard client grant for sub-page writes on large-page clients (4520)
3070 - don't free dentries not owned by NFS code, check generation (4806)
3071 - fix lsm leak if mds_create_objects() fails (4801)
3072 - limit debug_daemon file size, always print CERROR messages (4789)
3073 - use transno after validating reply (3892)
3074 - process timed out requests if import state changes (3754)
3075 - update mtime on OST during writes, return in glimpse (4829)
3076 - add mkfsoptions to LDAP (4679)
3077 - use ->max_readahead method instead of zapping global ra (5039)
3078 - don't interrupt __l_wait_event() during strace
3080 - add software watchdogs to catch hung threads quickly (4941)
3081 - make lustrefs init script start after nfs is mounted
3082 - fix CWARN/ERROR duplication (4930)
3083 - return async write errors to application if possible (2248)
3084 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
3085 - print NAL number in %x format (4645)
3086 - update barely-supported suse-2.4.21-171 series (4842)
3087 - support for sles 9 %post scripts
3088 - support for building 2.6 kernel-source packages
3089 - support for sles km_* packages
3091 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
3094 - ignore -ENOENT errors in osc_destroy (3639)
3095 - notify osc create thread that OSC is being cleaned up (4600)
3096 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
3097 - reconstruct ost_handle() like mds_handle() (4657)
3098 - create a new thread to do import eviction to avoid deadlock (3969)
3099 - let lconf resolve symlinked-to devices (4629)
3100 - don't unlink "objects" from directory with default EA (4554)
3101 - hold socknal file ref over connect in case target is down (4394)
3102 - allow more than 32000 subdirectories in a single directory (3244)
3103 - fix blocks count for O_DIRECT writes (3751)
3104 - OST returns ENOSPC from object create when no space left (4539)
3105 - don't send truncate RPC if file size isn't changing (4410)
3106 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
3107 - bind to privileged port in socknal and tcpnal (3689)
3109 - rate limit CERROR/CWARN console message to avoid overload (4519)
3110 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
3111 - basic mmap support (3918)
3112 - kernel patch series update from b1_4 (4711)
3114 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
3117 - avoid crash during MDS cleanup with OST shut down (2775)
3118 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
3119 - don't use bad inodes on the MDS (3744)
3120 - dynamic object preallocation to improve recovery speed (4236)
3121 - don't hold spinlock over lock dumping or change debug flags (4401)
3122 - don't zero obd_dev when it is force cleaned (3651)
3123 - print grants to console if they go negative (4431)
3124 - "lctl deactivate" will stop automatic recovery attempts (3406)
3125 - look for existing locks in ldlm_handle_enqueue() (3764)
3126 - don't resolve lock handle twice in recovery avoiding race (4401)
3127 - revalidate should check working dir is a directory (4134)
3129 - don't always mark "slow" obdfilter messages as errors (4418)
3131 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
3134 - don't close LustreDB during write_conf until it is done (3860)
3135 - fix typo in lconf for_each_profile (3821)
3136 - allow dumping logs from multiple threads at one time (3820)
3137 - don't allow multiple threads in OSC recovery (3812)
3138 - fix debug_size parameters (3864)
3139 - fix mds_postrecov to initialize import for llog ctxt (3121)
3140 - replace config semaphore with spinlock (3306)
3141 - be sure to send a reply for a CANCEL rpc with bad export (3863)
3142 - don't allow enqueue to complete on a destroyed export (3822)
3143 - down write_lock before checking llog header bitmap (3825)
3144 - recover from lock replay timeout (3764)
3145 - up llog sem before sending rpc (3652)
3146 - reduce ns lock hold times when setting kms (3267)
3147 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
3148 - fix NULL deref and obd_dev leak on setup error (3312)
3149 - replace some LBUG about llog ops with error handling (3841)
3150 - don't match INVALID dentries from d_lookup and spin (3784)
3151 - hold dcache_lock while marking dentries INVALID and hashing (4255)
3152 - fix invalid assertion in ptlrpc_set_wait (3880)
3154 - add libwrap support for the TCP acceptor (3996)
3155 - add /proc/sys/portals/routes for non-root route listing (3994)
3156 - allow setting MDS UUID in .xml (2580)
3157 - print the stack of a process that LBUGs (4228)
3159 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
3162 - don't cleanup request in ll_file_open() on failed MDS open (3430)
3163 - make sure to unset replay flag from failed open requests (3440)
3164 - if default stripe count is 0, use OST count for inode size (3636)
3165 - update parent mtime/ctime on client for create/unlink (2611)
3166 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
3167 - free recovery state on server during a forced cleanup (3571)
3168 - unregister_reply for resent reqs (3063)
3169 - loop back devices mounting and status check on 2.6 (3563)
3170 - fix resource-creation race that can provoke i_size == 0 (3513)
3171 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
3172 - more debugging for page-accounting assertion (3746)
3173 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
3174 - avoid deadlock after precreation failure (3758)
3175 - fix race and lock order deadlock in orphan handling (3450, 3750)
3176 - add validity checks when grabbing inodes from l_ast_data (3599)
3178 - add /proc/.../recovery_status to obdfilter (3428)
3179 - lightweight CDEBUG infrastructure, debug daemon (3668)
3180 - change default OSC RPC parameters to be better on small clusters
3181 - turn off OST read cache for files smaller than 32MB
3182 - install man pages and include them in rpms (3100)
3183 - add new init script for (un)mounting lustre filesystems (2593)
3184 - run chkconfig in %post for init scripts (3701)
3185 - drop scimac NAL (unmaintained)
3187 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
3190 - clean kiobufs before and after use (3485)
3191 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
3192 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
3193 - change init script to fail more clearly if not run as root (1528)
3194 - allow clients to reconnect during replay (1742)
3195 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
3196 - don't do DNS lookups on NIDs too small for IP addresses (3442)
3197 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
3198 - fix cond_resched (3554)
3199 - only evict unfinished clients after recovery (3515)
3200 - allow bulk resend, prevent data loss (3570)
3201 - dynamic ptlrpc request buffer allocation (2102)
3202 - don't allow unlinking open directory if it isn't empty (2904)
3203 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
3204 - remove extraneous obd dereference causing LASSERT failure (3334)
3205 - don't use get_cycles() when creating temp. files on the mds (3156)
3206 - hold i_sem when setting i_size in ll_extent_lock() (3564)
3207 - handle EEXIST for set-stripe, set proper directory name (3336)
3209 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
3210 - fix ksocknal_fmb_callback() error messages (2918)
3212 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
3215 - don't copy lvb into (possibly NULL) reply on error (2983)
3216 - don't deref dentry after dput, don't free lvb on error (2922)
3217 - use the kms to determine writeback rpc length (2947)
3218 - increment oti_logcookies when osc is inactive (2948)
3219 - update client's i_blocks count via lvb messages (2543)
3220 - handle intent open/close of special files properly (1557)
3221 - mount MDS with errors=remount-ro, like obdfilter (2009)
3222 - initialize lock handle to avoid ASSERT on error cleanup (3057)
3223 - don't use cancelling-locks' kms values (2947)
3224 - use highest lock extent for kms, not last one (2925)
3225 - don't dereference ERR_PTR() dentry in error handling path (3107)
3226 - fix thread race in portals_debug_dumplog() (3122)
3227 - create lprocfs device entries at setup instead of at attach (1519)
3228 - common AST error handler, don't evict client on completion race (3145)
3229 - zero nameidata in detach_mnt in 2.6 (3118)
3230 - verify d_inode after revalidate_special is valid in 2.6 (3116)
3231 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
3232 - initialize RPC timeout timer earlier for 2.6 (3219)
3233 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
3234 - print nal/nid for unknown nid (3258)
3235 - additional checks for oscc recovery before doing precreate (3284)
3236 - fix ll_extent_lock() error return code for 64-bit systems (3043)
3237 - don't crash in mdc_close for bad permissions on open (3285)
3238 - zero i_rdev for non-device files (3147)
3239 - clear page->private before handing to FS, better assertion (3119)
3240 - tune the read pipeline (3236)
3241 - fix incorrect decref of invalidated dentry (2350)
3242 - provide read-ahead stats and refine rpc in flight stats (3328)
3243 - don't hold journal transaction open across create RPC (3313)
3244 - update atime on MDS at close time (3265)
3245 - close LDAP connection when recovering to avoid server load (3315)
3246 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
3247 - don't leak open file on MDS after open resend (3325)
3248 - serialize filter_precreate and filter_destroy_precreated (3329)
3249 - loop device shouldn't call sync_dev() for nul device (3092)
3250 - clear page cache after eviction (2766)
3251 - resynchronize MDS->OST in background (2824)
3252 - refuse to mount the same filesystem twice on same mountpoint (3394)
3253 - allow llmount to create routes for mounting behind routers (3320)
3254 - push lock cancellation to blocking thread for glimpse ASTs (3409)
3255 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
3256 - fix rare problem with rename on htree directories (3417)
3258 - allow default OST striping configuration per directory (1414)
3259 - fix compilation for qswnal for 2.6 kernels (3125)
3260 - increase maximum number of MDS request buffers for large systems
3261 - change liblustreapi to be useful for external progs like lfsck (3098)
3262 - increase local configuration timeout for slow disks (3353)
3263 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
3265 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3268 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
3269 - don't overwrite extent policy data in reply if lock was blocked (2901)
3270 - drop filter export grants atomically with removal from device (2663)
3271 - del obd_self_export from work_list in class_disconnect_exports (2908)
3272 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
3273 - swab reply message in mdc_close, other PPC fixes (2464)
3274 - fix destroying of named logs (2325)
3275 - overwrite old logs when running lconf --write_conf (2264)
3276 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
3277 - fix race in target_handle_connect (2898)
3278 - mds_reint_create() should take same inode create lock (2926)
3279 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
3280 - don't close files for self_export to avoid uninitialized obd (2936)
3281 - allow MDS with the same name as client node (2939)
3282 - hold dentry reference for closed log files for unlink (2325)
3283 - reserve space for all logs during transactions (2059)
3284 - don't evict page beyond end of stripe extent (2925)
3285 - don't oops on a deleted current working directory (2399)
3286 - handle hard links to targets without a parent properly (2517)
3287 - don't dereference NULL lock when racing during eviction (2867)
3288 - don't grow lock extents when lots of conflicting locks (2919)
3290 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
3293 - account for cache space usage on clients to avoid data loss (974)
3294 - lfsck support in lustre kernel code (2349)
3295 - reduce journal credits needed for BRW writes (2370)
3296 - orphan handling to avoid losing space on client/server crashes
3297 - ptlrpcd can be blocked, stopping ALL progress (2477)
3298 - use lock value blocks to assist in proper KMS, faster stat (1021)
3299 - takes i_sem instead of DLM locks internally on obdfilter (2720)
3300 - recovery for initial connections (2355)
3301 - fixes for mds_cleanup_orphans (1934)
3302 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
3303 - block all file creations until orphan recovery completes (1901)
3304 - client remove rq_connection from request struct (2423)
3305 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
3306 - recovery timer race (2670)
3307 - mdc_close recovey bug (2532)
3308 - ptlrpc cleanup bug (2710)
3309 - mds timeout on local locks (2588)
3310 - namespace lock held during RPCs (2431)
3311 - handle interrupted sync write properly (2503)
3312 - don't try to handle a message that hasn't been replied to (2699)
3313 - client assert failure during cleanup after abort recovery (2701)
3314 - leak mdc device after failed mount (2712)
3315 - ptlrpc_check_set allows timedout requests to complete (2714)
3316 - wait for inflight reqs when ptlrpcd finishes (2710)
3317 - make sure unregistered services are removed from the srv_list
3318 - reset bulk XID's when resending them (caught by 1138 test)
3319 - unregister_bulk after timeout
3320 - fix lconf error (2694)
3321 - handle write after unfinished setstripe, stripe-only getstripe (2388)
3322 - readahead locks pages, leaves pending causing memory pressure (2673)
3323 - increase OST request buffers to 4096 on large machines (2729)
3324 - fix up permission of existing directories in simple_mkdir (2661)
3325 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
3326 - don't assign transno to errored transactions (2742)
3327 - don't delete objects on OST if given a bogus objid from MDS (2751)
3328 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
3329 - if rq_no_resend, then timeout request after recovery (2432)
3330 - fix MDS llog_logid record size, 64-bit array alignment (2733)
3331 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
3332 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
3333 - MDS recovery shouldn't delete objects that it has given out (2730)
3334 - if enqueue arrives after completion, don't clobber LVB (2819)
3335 - don't unlock pages twice when trigger_group_io returns error (2814)
3336 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
3337 - don't write pages to disk if there was an error (1450)
3338 - don't ping imports that have recovery disabled (2676)
3339 - take buffered bytes into account when balancing socknal conn (2817)
3340 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
3341 - reconnect unlink llog connection after MDS reconnects to OST (2816)
3342 - remove little-endian swabbing of llog records (1987)
3343 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
3344 - retry reposting request buffers if they fail (1191)
3345 - grow extent at grant time to avoid granting a revoked lock (2809)
3346 - lock revoke doesn't evict page if covered by a second lock (2765)
3347 - disable VM readahead to avoid reading outside lock extents (2805)
3349 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
3350 - updated kernel patches for hp-2.4.20 kernel (2681)
3352 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
3355 - fix truncated write corruption (2366)
3356 - fix for failed assertion in iopen_connect_dentry (1792,2517)
3358 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
3359 - ensure len(uuid) < 37 in lmc (1171)
3360 - fix ia64 OOPS in llog_test (2255)
3361 - zero end of page at obdfilter for partial page writes (2648)
3362 - don't leave stale dentries around after renames (bug 2428)
3363 - fix timeouts when evicting a client with a single lock held (2642)
3364 - set deadline for the initial HELLO message to drain (2634)
3365 - print out dotted-quad IP addresses in the socknal (2302)
3367 - additional debugging for MDS client eviction problem (2443)
3368 - fix mkfsoptions support for osts (2603, 2604)
3370 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
3373 - add series for the vanilla 2.6.0 kernel
3374 - add series for the vanilla 2.4.24 kernel
3375 - add series for a cray x86/64 UL kernel drop
3376 - fix xattr patches for the vanilla 2.4.19 series
3378 - generate true UUIDs in lmc (1171)
3379 - have portals stack dumping break in UML (2466)
3380 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
3381 - allocate with _NOFS in ldlm to avoid deadlock (1933)
3382 - wake callback waiting threads on client eviction (2460)
3383 - Add --ptldebug and --subsystem to lmc (1719)
3384 - update assertion to allow safe interrupt allocation
3385 - set rq_no_resend for cancel requests (2432)
3386 - recalculate ptlrpcd timeout after resend (2494)
3387 - call vfs_rmdir when removing pending directories (2368)
3388 - fix renaming a file to itself (2429)
3389 - lmc creates a default one-stripe lov (2454)
3390 - expand procfs space to handle large clusters (2326)
3391 - increase UML stack to avoid overflow
3392 - update lconf's list of debug and subsystem masks
3393 - fix lfs find --obd (2510)
3394 - /proc tunable for disabling filter read caching (2591)
3395 - stop rpm packages from altering slapd.conf (2301)
3396 - disable nagle in the socknal under 0conf (2578)
3397 - choose mds inode size based on stripe count (2572)
3398 - fix kernel-source rpm problems (2516)
3400 - add --disable-doc to avoid pdf generation (2421)
3401 - update documentation, tests, type-os, comments
3402 - avoid format warnings on ia64
3403 - remove the TOE NAL
3404 - tiny code cleanups by removing unused fields
3406 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
3409 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
3410 - remove the most blatant lies from BUILDING file (2371)
3411 - change default debug level to reasonable production setting
3412 - reduce client side cache size to reduce cache flush time
3413 - reduce max RPCs in flight to avoid unnecessary file fragmentation
3414 - make TCP zerocopy and pinger support enabled by default (2476)
3415 - sync writes completed after process exits caused crashes (2319)
3416 - maintain correct mount count on the MDS (2356)
3417 - backout 1557, because 2316 wasn't really fixed
3418 - better file I/O statistics gathering in /proc
3419 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
3420 - another kernel patch to fix zero-copy TCP function export
3421 - don't take duplicate lock when processing re-sent getattr (2420)
3422 - lctl uses obd_self_export instead of creating new conn (2353)
3423 - MDS/OST recovery case which requires object creation asserted (2425)
3424 - move lfs from /usr/sbin to /usr/bin in packages
3425 - fix race between mds_client_add and mds_client_free (2417)
3426 - use kmalloc instead of slabs in portals (2430)
3427 - don't create duplicate records when a failover MDS is present (2442)
3428 - remove unnecessary mount age check (2332)
3429 - don't remove directory inodes from locks prematurely (2451)
3430 - don't break if MDS service name is the same as hostname (2103)
3431 - fix races in client write RPC generation when cache full (2482)
3433 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
3436 - remove now-unused request->rq_obd (278)
3437 - if an allocation fails, print out how much memory we've used (1933)
3438 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
3439 - add the "configurable stack size" patch to most series files (1256)
3440 - ability to write large log records, for 100+ OST configs (2306)
3441 - fix NULL deref when filter_prep fails (2314)
3442 - fix operator precedence error in filter_sync
3443 - dynamic allocation of socknal TX descriptors (2315)
3444 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
3445 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
3446 - ensure that CWARN messages in Portals always get to the syslog
3447 - __init/__exit are not for prototype decls (ldlm_init/exit)
3448 - x86-64 compile warning fixes
3449 - fix gateway LMC keyword conflict (2318)
3450 - fix MDS lock inversions in getattr/reint paths (1844)
3451 - fix a rare lock re-ordering bug, which caused deadlock (2322)
3452 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
3453 - DLM race condition prevented some lock evictions (2328)
3454 - ENOMEM detection and retry on socknal sends (2230)
3455 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
3456 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
3457 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
3458 - better error messages when a client is rejected during recovery (1505)
3459 - avoid cancelling locks which were never granted, after failure (2330)
3460 - fix i_sem/journal inversion in mds_client_add (2333)
3461 - fix truncate/getattr lock cycle deadlock (2334)
3462 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
3463 - fix two rare exit paths which could leak an l_lock() ref (2321)
3464 - fencepost error in MDS/OST orphan recovery (2226)
3465 - make log record alignment 8 bytes (1988)
3466 - lstripe now fails when requested offset > ost_count (2237)
3467 - ensure that all kernel series have a complete list.h (1607)
3468 - fix crashes in special-file operations (2316)
3469 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
3471 - allow configurable automake binary, for testing new versions
3472 - small update to the lfs documentation
3474 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
3476 * fix negative export reference count in fsfilt_sync (2312)
3478 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
3479 * release candidate 0.9.1
3481 - orphans are moved into the PENDING directory for possible recovery
3482 - replayed opens now open by fid for orphan/rename safety (1042)
3483 - last close of an orphan inode generates a transno (683)
3484 - chdir() and mount() now pin the directory entry (1020)
3485 - avoid CERROR in normal ll_setattr_raw() error case (1500)
3486 - discard very old requests without processing them (1502)
3487 - remove some common, well-understood CERRORs (1505)
3488 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
3489 - clear "grant" flags in OST replies until OST grant code lands (1644)
3490 - fix read performance by not clobbering i_blksize on client (1598)
3491 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
3492 - make LRU size a /proc tunable, clears locks when reduced (707)
3493 - fix some lprocfs rot that prevented ptlbd from loading (1732)
3494 - server locks take references on exports now (1558)
3495 - build fixes for 2.4.20-rh trees (1663)
3496 - return an error from lov_create if all OSCs are inactive (1751)
3497 - fix import levels when a reconnect happens without a timeout (1597)
3498 - exit early from mds_open if we get a lookup error (1749)
3499 - partial page read at EOF wouldn't wait for disk before sending (1642)
3500 - avoid NULL deref in obdfilter when reading page past EOF (1592)
3501 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
3502 - fix LBUG in ll_it_open_error with rc = -2 (1861)
3503 - write/truncate lock inversion (1639)
3504 - Don't auto-load obdclass, portals modules during cleanup (1495)
3505 - fix timestamps from jumping to "now" (1763)
3506 - extra journal assertions (1648)
3507 - add an extra multiunlink test (1771)
3508 - fix read_record/write_record API (1776)
3509 - fix leak of offset_extent, possible incorrect i_size later (1772)
3510 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
3511 - Debugging for the kqswnal_get_idle_tx problems (1820)
3512 - Allow recovery to be attempted multiple times (1536)
3513 - Write out MDS last_rcvd file after it is first created (1600)
3514 - Fix tx_descriptor leak in failed transmit situations (1827)
3515 - ext3 journaling fixes for assertion failure after IO error (1871)
3516 - class_export_put() on freed export after completion AST error (1896)
3517 - Fix revalidate looping in VFS (1322)
3518 - Don't access a freed export during MDS_REINT timeout (1521)
3519 - Add open-unlink recovery support on the MDS (1673,1764)
3520 - Return an error if no MDS data was read from last_rcvd (1946)
3521 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
3522 - Don't setup a disk device that doesn't match exported UUID (317)
3523 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
3524 - avoid committing NULL handle in force close
3525 - local.sh is now a one-stripe LOV configuration
3526 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
3527 - fix ext3 htree duplicate directory entry corruption (1516)
3528 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
3529 - update to new LOV EA format (2097)
3530 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
3532 2003-06-15 Phil Schwan <phil@clusterfs.com>
3535 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
3536 - per-import/export recovery handling (958, 931, 959)
3537 - multiple last-rcvd slots, for serving multiple FSes (949)
3538 - connections are again shared between multiple imp/exports (963, 964)
3539 - "umount -f" would hang if any requests needed to be sent (393, 978)
3540 - avoid pinning large req buffer by copying for queued messages (989)
3541 - add "uuid" to "lctl device" command to help upcalls (991)
3542 - "open" RPCs with transnos would confuse recovery counters (1037)
3543 - do proper endian conversion of all wire messages (288, 340, 891)
3544 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
3545 - call waiting locks callback from LDLM recovery thread (1127, 1151)
3546 - fix ptlrpc_connection leak in target_handle_connect (1174)
3547 - fix import refcounting bug in OST and MDS cleanup (1134)
3548 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
3549 - fix very unlikely obd_types race condition (501)
3550 - remove osc_open hack for echo_client (1187)
3551 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
3552 - a failure in read_inode2 leads to deadlock (1139)
3553 - cancel ack-locks as soon as transaction is committed (1072)
3554 - fix major leaks and crashes in the bulk I/O path (937, 1057)
3555 - make sure to commitrw after any preprw to avoid deadlock (1162)
3556 - failing to execute a file in a lustre FS would lock inode (1203)
3557 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
3558 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
3559 - obd_uuid2tgt would walk off the end of the list (1255)
3560 - on IA64 the osc would give portals incorrect bulk size (1258)
3561 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
3562 - fix lock inversion caused by new llite matching code (1282)
3563 - limit the number of dirty pages on a client to 10MB (1286)
3564 - timed out locks were not being corrected cancelled (1289)
3565 - fix O_DIRECT above 4GB on IA-32 (1292)
3566 * major user-visible changes
3567 - fail out/fail over policy now controlled by the upcall (993)
3569 - add OBD_PING to check server availability and failure (954)
3570 - lustre messages are now sent in sending host order (288, 340, 891)
3571 - add eadatalen to MDS getattr reply (340)
3572 - OST read replies may contain second buffer, with per-page status (593)
3574 2003-03-11 Phil Schwan <phil@clusterfs.com>
3577 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
3578 - failed open()s could cause deadlock; fixed (867, 869)
3579 - stop cancelling OST locks when files are closed (481)
3580 - overlapping XID spaces caused network corruption (851, 853)
3581 - fix unsafe fsfilt counter arithmetic; change to atomic_t
3582 - setattr_raw added, to do single-RPC, server-side setattrs
3583 - lmc/lconf syntax change for OST UUIDs
3584 - fix crashy race condition between ptlrpc_free_req and osc_close
3585 - don't use request in mdc_enqueue if we hit a timeout (889)
3586 - don't set the inode i_size for regular files from the MDS (896)
3587 - handle out of order completion AST (842)
3588 - don't LBUG if a lock request times out after receiving AST (913)
3589 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
3590 - if a bad lock AST arrives, send an error instead of dropping entirely
3591 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
3592 - fix leak in bulk IO when only partially completed (899, 900, 926)
3593 - fix O_DIRECT for ia64 (55)
3594 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
3595 - C-z after timeout could hang a process forever; fixed (977)
3597 - client-side I/O cache (678, 924, 929, 941, 970)
3599 - READPAGE and SETATTRs which don't take server-side locks get
3602 2003-02-11 Phil Schwan <phil@clusterfs.com>
3605 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
3606 - Fix fsfilt_extN_readpage() to read a full page of directory
3607 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
3608 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
3609 - Fix imbalanced LOV object allocation and out-of-bound access (469)
3610 - Most intent operations were removed, in favour of a new RPC mode
3611 that does a single RPC to the server and bypasses most of the VFS
3612 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
3613 - Aggressively cancel local locks on DLM servers
3614 - mds_reint_unlink sends EA to the client if it's the last nlink.
3615 client uses that EA to unlink OST objects.
3616 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
3617 - recursive symlinks were fixed (439)
3618 - fixed NULL deref in DEBUG_REQ
3619 - filter_update_lastobjid no longer calls sync, which annoyed extN
3620 - fixed multi-client small-writes to a single file problem (445)
3621 - fixed mtime updates during file writes (607)
3622 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
3623 - fixed bug in obd_brw_read/write() (under guise of testing 367)
3624 - fixed Linux OST size reporting problem (444, 656)
3625 - OST now updates object mtime with writes or setattr (607, 619)
3626 - client verifies file size before zeroing page past EOF (445)
3627 - OST now writes last allocated objid to disk with allocation (108)
3628 - LOV on echo now works (409)
3630 - mds_reint_unlink sends a new buffer, with the EA included. this
3631 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
3632 set if a regular file was being unlinked, and it was the last link
3633 - use PtlGet from the target for bulk writes (315)
3634 - OST now updates object mtime with writes or setattr (607, 619)
3635 - LDLM now has a grant-time callback to revalidate locked items, if
3637 - Many MDS operations were reorganized to combat race conditions
3639 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
3640 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
3642 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
3645 - Fully reactivate OST imports after reconnection (512, others)
3646 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
3647 - More graceful error handling for truncating on dead OST (515)
3648 - Don't error out unless we're actually accessing dead stripes (474)
3649 - Fix garbage sizes when stripes are missing (410)
3650 - LRU counters were broken, causing constant lock purge (433, 432)
3651 - garbage on read from stripes with failed OSTs (441)
3652 - mark OSCs as active before reconnecting during recovery (438)
3653 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
3654 - lfind did not preserve OST order in output (443)
3655 - symlinks cause hung clients, incorrect data (439)
3656 - stop dereferencing request after dropping refcount (457)
3657 - don't LASSERT(spin_is_locked) on non-SMP (455)
3658 - fixes for many rename() bugs
3659 - fstat didn't correctly synchronize attributes (399)
3660 - server must handle lock cancellation during blocking AST prep (487)
3661 - bulk descriptors were free()d too soon (511)
3662 - fix paths in lconf, which would load incorrect modules (451, 507)
3663 - fix confusing lconf 'host not found' error message (386)
3664 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
3665 - fix race condition in mdc_blocking_ast() for inode access (526)
3666 - fix lov_unpackmd() unpacking wrong number of stripes (537)
3667 - fix lov_set_osc_active() marking wrong OSC inactive (440)
3668 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
3669 - fix multiple writes of stripe MD to MDS (358, maybe 519)
3670 - fix lstripe in several ways (kernel side) (527)
3671 - fix request leak in ldlm_cli_enqueue (262)
3672 - incorrect OSC was marked inactive after OST failure
3673 - call mds_fs_cleanup before unmounting filesystem (524)
3674 - fix races between taking ns_lock and ldlm_lock_change_resource
3675 - fix races updating LOV export open file list
3676 - fix lov_enqueue error path, avoid decref-ing bad lock handle
3677 - fix recovery NULL deref in ldlm_cli_cancel_unused
3678 - fix some DLM races by using new hash table for lock handles (419)
3679 - permit the client to specify desired inodes, at replay
3680 - duplicate requests when we queue them for replay reintegration
3681 - fix last_rcvd offset calculation
3682 - sync after each recovered transaction, so we always make progress
3683 - never, not always, ERESTART requests without transnos
3684 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
3686 - skip replay if the MDS says that the client is already connected
3687 - don't check for a recovery-enabled export to match lctl's UUID
3688 - don't INC_USE_COUNT for phantom exports
3689 - don't crash when cleaning up phantom exports (567)
3690 - don't double-finish or set replay data for errored mdc_open requests
3691 - abort requests when they time out, so we don't get old replies
3692 - send/receive replies for AST messages again
3693 - if the client says that it doesn't have the lock, cancel it on the
3695 - if we timeout during I/O, don't try to cancel an in-use lock; instead
3696 mark it as destroyed, it will all work out when decref is called
3697 - fix module use counts (22, 581)
3699 - ASTs now expect a reply (server cancels lock on error reply)
3701 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
3704 - fix many simultaneous client startup (392)
3705 - fix dentry->d_it clobbering
3706 - credentials weren't being shipped for readdir/getattr operations
3707 - remove invalid assertions triggered during some concurrent MD
3709 - proper Lustre versions added (336, 389)
3710 - fix memory leak for create error case (398)
3711 - fix LOV locking bug that would get cli/srv out of sync
3712 - fix echo client over LOV (409)
3713 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
3714 - fix double-O_EXCL intent crash (424)
3715 - avoid sending multiple lock CANCELs (352)
3717 - MDS can do multi-client recovery (modulo bugs in new code)
3719 - many updates, edits, cleanups
3721 2002-11-18 Phil Schwan <phil@clusterfs.com>
3724 - fix null d_it dereference (346)
3725 - fix full OST/dbench hang (333)
3726 - fix permission problem with file removal (286)
3727 - fix removal of OSCs from LOV when they fail
3728 - fix NULL deref during bulk timeout (214)
3729 - fix problems related to multiple filesystems on one MDS (241)
3730 - fixed serious subtle metadata locking bugs
3731 - free locks on clients when inodes are removed due to memory
3733 - fix inode pointer in lock data (285)
3734 - partial support for multiple MDS on a single host (241)
3735 - data locks weren't cancelled at clear_inode time (290, 311)
3736 - intent locks could lead to unbounded lock growth (205)
3737 - added a maximum lock count, an LRU list, and a flusher
3738 - fix multiple rename (365)
3739 - properly abstracted the echo client
3740 - OSC locked 1 byte too many; fixed
3741 - rewrote brw callback code:
3742 - fixed recovery bugs related to LOVs (306)
3743 - fixed too-many-pages-in-one-write crash (191)
3744 - fixed (again) crash in sync_io_timeout (214)
3745 - probably fixed callback-related race (385)
3747 - Add capability to MDS protocol
3748 - LDLM cancellations and callbacks on different portals
3750 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3753 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3754 - defer open object destruction to close time (601981, 138)
3755 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3756 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3757 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3758 - don't call obd_setattr in ll_file_release for destroyed objects
3759 * protocol change to lustre_msg: move |version| and add |flags|
3760 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3761 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3762 * added replay of create, unlink, link and rename operations during
3763 MDS failover; recovery should be much more robust now
3764 * remove failed OSCs from LOVs (only lov_create uses this so far)
3765 * the lustre-HOWTO was brought (more) up to date (582544)
3767 2002-10-23 Phil Schwan <phil@clusterfs.com>
3770 - in-use dentries weren't being reused properly (617851)
3771 - prevent multiple LDLM setup (599178)
3772 - fix LOV size calculations for truncate (617853)
3773 - fix client handling of MDS intent errors (POSIX)
3774 - fix permission bug in lovstripe.c test (624321)
3775 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3776 - truncate past end of file could corrupt data
3777 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3778 - a race in recovery could return ETIMEDOUT to apps (623947)
3779 - building outside the source directory was fixed
3780 * the lustre-HOWTO was brought (more) up to date (582544)
3781 * major progress was made on recovery functionality
3783 2002-10-10 Phil Schwan <phil@clusterfs.com>
3786 - recovery deadlock fix
3787 - rm -rf causes LBUG fix (617817)
3788 - file open by multiple tasks fix (618962)
3789 - directory permissions bugs (602707 and 620007)
3790 - journal_stop fixed with locking (611313)
3791 - O_APPEND failures resolved (618273, perhaps 614459)
3792 - lconf PATH fix (619770)
3793 - IA64 build fix (621450)
3794 - RPC buffer sizes scale with amount of memory
3796 2002-10-01 Phil Schwan <phil@clusterfs.com>
3799 - locks would be cancelled without throwing away data pages,
3800 resulting in inconsistent data (605627)
3801 - inode attributes were not always being refreshed (605627, 612449)
3802 - lconf now continues to cleanup after lctl reports an error
3803 - MDS now enforces user permissions (602707)
3804 - lprocfs cleanup fixed, but not yet enabled (614157)
3805 - fixed infinite server hang, should a client not respond to an AST
3806 - avoid going into recovery if user calls readlink() with a buffer
3807 that's too small (613941)
3808 - AST RPCs no longer require replies (614867) -- this may be changed
3809 - don't crash server if client sends an IOV that's too big (611336)
3810 - fixed lock conversion deadlock (611892)
3811 - fixed the following of symlinks (614622)
3812 * recovery: the server can remove locks from a client that dies, other
3813 clients can make progress
3814 * more extN patch fixes
3815 * compile-time configurable ptlrpc buffer allocations
3817 - collaborative read cache document
3818 - Lustre Lite Performance CDR document-in-progress
3820 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3823 - fix typo in patch-2.4.18
3825 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3828 - clear ptlrpc request each time in handle_incoming_request()
3829 - unlink of files now destroys the object on the OST
3831 2002-09-19 Peter Braam <braam@clusterfs.com>
3833 * add hard link support
3834 * change obdfile creation method
3835 * kernel patch changed
3837 2002-09-19 Peter Braam <braam@clusterfs.com>
3840 - stack overflow bug in extN fixed
3842 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
3844 * documentation updates
3845 - add man pages for config tools
3846 - update tests/README to describe testing with new config tools
3847 - finish metadata API descriptions
3848 * bug fixes and cleanups
3849 - statfs workaround for 16TB limit
3850 - LOV stripe allocation improved, can stripe on subset of OSTs
3851 - LOV file size/IO offset was wrong for files > 4GB in size
3852 - object EA data was being dropped, caused files to be unreadable
3853 - memory overflow with non-LOV OST caused memory corruption
3854 - fixed regression tests to work with new config tools, obdfilter
3855 - fixed bug when directory size became larger than 1 block
3856 - fixed bug (for single client case) when PWD was deleted
3857 - invalidate local directory pages when doing intent-based ops
3858 - avoid LDLM oops when lock callback contained bad data
3860 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
3862 * documentation updates
3863 * bug fixes and cleanups
3864 - configuration tools
3867 - 64-bit compile warnings
3868 - 64-bit internal statfs data
3870 * test_brw on persistent OST devices
3872 * lprocfs (disabled)
3874 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
3876 * documentation updates
3877 * bug fixes and cleanups
3878 * configuration tools
3880 2002-08-30 Peter J. Braam <braam@clusterfs.com>
3883 * many small fixes to 0_5_4
3884 * io/network handling
3885 * thinkos in MDS operations
3887 2002-08-24 Peter J. Braam <braam@clusterfs.com>
3890 * crucial basic fixes to 0.5.3
3891 * IOR, Iozone work over Elan
3894 2002-08-07 Phil Schwan <phil@clusterfs.com>
3895 * version 0_5_3, our first alpha
3896 * we use the new Portals iovs
3897 * documentation updates
3898 * bug fixes and cleanups
3899 * small changes in the DLM wire protocol
3901 2002-07-25 Peter J. Braam <braam@clusterfs.com>
3902 * version 0_5_1 with some initial stability,
3903 * locking on MD and file I/O.
3904 * documentation updates
3905 * several bug fixes since 0.5.0
3906 * small changes in wire protocol
3908 2002-07-18 Phil Schwan <phil@clusterfs.com>
3910 * delivered as Lustre Light Alpha
3911 * fixed a crash after handling invalid MDS requests
3912 * fixed directory pages for architectures with non-4k pages sizes
3914 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
3915 * release version v0_4_4
3916 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
3918 * Fixes a number of interruption problems with OST operations.
3919 * Update documentation for portals header changes
3920 * Move all wire protocol structs/defines to lustre_idl.h
3921 * Fixes symlink length bug.
3922 * Add tcpdump to repository.
3924 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
3925 * release version v0_4_3
3926 * Fixes statfs for inodes on extN.
3927 * Fixes bug in runtests which would delete /etc/hosts.
3928 * Use 64-bit object IDs wherever possible (not into VFS though)
3929 Remove ost_get_info, which is unused by lustre, and out of date.
3931 2002-07-03 Peter Braam <braam@clusterfs.com>
3932 * release version v0_4_2 Fixes a lookup error (type not passed)
3933 * move forward to head of Portals
3934 * move forward to latest Lustre kernel
3936 2002-06-25 Peter Braam <braam@clusterfs.com>
3937 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob