4 2.6.9-55.0.6.EL (RHEL 4),
5 2.6.16.46-0.14 (SLES 10),
6 2.6.18-8.1.14.EL5 (RHEL 5).
7 2.6.18.8 vanilla (kernel.org)
8 * Client support for unpatched kernels:
9 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
10 2.6.9-42.0.10.EL (RHEL 4),
11 2.6.16 - 2.6.21 vanilla (kernel.org)
12 * Recommended e2fsprogs version: 1.40.2-cfs1
13 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
15 Severity : enhancement
17 Description: self-adjustable client's lru lists
18 Details : use adaptive algorithm for managing client cached locks lru
19 lists according to current server load, other client's work
20 pattern, memory activities, etc. Both, server and client
21 side namespaces provide number of proc tunables for controlling
24 Severity : enhancement
26 Description: light-weight GSS support
27 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
28 and reduce performance overhead.
30 Severity : enhancement
32 Description: Linux keyring support
33 Details : Support using service of Linux keyring for Lustre GSS internal
34 context refresh/cache mechanism.
38 Description: Fix errors in lfs documentation
39 Details : Fixes man pages
43 Description: don't use GFP_* in generic Lustre code.
44 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
48 Description: obdclass is limited by single OBD_ALLOC(idarray)
49 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
53 Description: warnings with build patchless client with vanila 2.6.19 and up
54 Details : change old ctl_table style and replace ctl_table/ctl_table_header
55 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
59 Frequency : Only for SLES
60 Description: sanity_quota fail test_1
61 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
62 file, which makes TSTID[2] inunique.
66 Frequency : Only for SLES9
67 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
68 Details : Update target/ChangeLog/which_patch .
72 Frequency : Only for test_10 in sanity-quota.sh
73 Description: a bug in quota test code
74 Details : checking a test flag in a wrong place
78 Frequency : Only for test_13 in sanity-quota.sh
79 Description: a bug in quota test script
80 Details : shouldn't check overfull allocated quota
84 Description: jbd statistics
85 Details : Port older jbd statistics patch for sles10
87 Severity : enhancement
89 Description: Add printing inode info into message about error in writepage.
94 Description: reply_lock_interpret crash due to race with it and lock cancel.
95 Details : Do not replay locks that are being cancelled. Do not reference
96 locks by their address during replay, just by their handle.
100 Frequency : When flocks are used.
101 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
102 Details : Flock locks might destroy just granted lock if it could be merged
103 with another existing flock, this is done in completion handler,
104 so teach ldlm_cli_enquque_fini that this is a valid case for
110 Description: Oops in read and write path when failing to allocate lock.
111 Details : Check if lock allocation failed and return error back.
115 Description: lstripe command fails for valid OST index
116 Details : The stripe offset is compared to lov->desc.ld_tgt_count
117 instead of lov->desc.ld_active_tgt_count.
121 Description: sanity.sh failed test 103
122 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
127 Description: df doesn't work properly if diskfs blocksize != 4K
128 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
132 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
133 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
137 Description: obd_health_check_timeout too short
138 Details : set obd_health_check_timeout as 1.5x of obd_timeout
142 Description: llapi_file_create() does not allow some changes
143 Details : add llapi_file_open() that allows specifying the mode and
144 open flags, and also returns an open file handle.
148 Description: merge and cleanup kernel patches.
149 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
153 Description: Add journal checksum support.(Kernel part)
154 Details : The journal checksum feature adds two new flags i.e
155 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
156 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
157 indicates that the commit block contains the checksum for
158 the blocks described by the descriptor blocks. Now commit
159 record can be sent to disk without waiting for descriptor
160 blocks to be written to disk. This behavior is controlled
161 using JBD2_FEATURE_ASYNC_COMMIT flag.
165 Description: OSS needs mutliple precreate threads
166 Details : Add ability to start more than one create thread per OSS.
170 Description: Sanity.sh test_65k failed: setstripe should have succeeded
171 Details : execute lfs setstripe on client
175 Description: mds_obd_create error creating tmp object
176 Details : When the user sets quota on root, llog will be affected and can't
177 create files and write files.
180 Frequency : Always on ia64 patchless client, and possibly others.
182 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
183 Details : This allows the patchless client to be loaded on architectures
188 Description: RedHat Update kernel for RHEL5
189 Details : Add the kernel config file for RHEL5.
193 Description: RedHat Update kernel for RHEL5
194 Details : Modify the kernel config file more closer RHEL5.
198 Description: Build failure against Centos5 (RHEL5)
199 Details : Define PAGE_SIZE when it isn't present.
203 Description: test_7 on sanity-quota.sh can't be used on separate machines
204 Details : add facet to handle it
208 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
209 Details : with NFS, the anon dentry's parent was set to itself in
210 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
211 corresponding dentry other than use rec->ur_name.
213 Severity : enhancement
215 Description: lfs setstripe enhancement
216 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
220 Description: testing performance impact of enabling checksumming
221 Details : enable checksum by default, allow --disable-checksum
222 configure option and "-o nochecksum" mount option
226 Description: lustre support for RHEL5
227 Details : Add support for RHEL5.
231 Description: Client eviction due to failover config
232 Details : after a connection loss, the lustre client should attempt to
233 reconnect to the last active server first before trying the
234 other potential connections.
238 Description: when mds and osts use different quota unit(32bit and 64bit),
239 quota will be released repeatly.
240 Details : void sending multiple quota reqs to mds, which will keep the
241 status between the reqs.
245 Description: osts not allocated evenly to files
246 Details : change the condition to increase offset_idx
249 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
251 Description: Data corruption for OSTs that are formatted larger than 2TB
253 Details : When generating the bio request for lustre file writes the
254 sector number would overflow a temporary variable before being
255 used for the IO. The data reads correctly from Lustre (which
256 will overflow in a similar manner) but other file data or
257 filesystem metadata may be corrupted in some cases.
261 Description: Tune the kernel for good SCSI performance.
262 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
263 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
268 Description: rewrite ext2-derived code in obdclass/uuid.c
269 Details : rewrite inherited code (uuid parsing code from ext2 utils)
270 from scratch preserving functionality.
274 Description: "lfs find -obd UUID" prints directories
275 Details : "lfs find -obd UUID" will return all directory names instead
276 of just file names. It is incorrect because the directories
277 do not reside on the OSTs.
281 Description: use i_size_read and i_size_write in 2.6 port
282 Details : replace inode->i_size access with i_size_read/write()
285 Frequency : when removing large files
287 Description: scheduling issue during removal of large Lustre files
288 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
289 It causes scheduling issues when removing large files (17TB in the
293 Frequency : only with liblustre clients on XT3
295 Description: evictions taking too long
296 Details : allow llrd to evict clients directly on OSTs
299 Frequency : only on ppc
301 Description: /proc/fs/lustre/devices broken on ppc
302 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
303 We should make sure the type of 'index' is loff_t and then cast
304 explicitly as needed below. Do not assign an explicitly cast
308 Frequency : only for rhel5
310 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
311 Details : Modify the target file & which_kernel.
313 Severity : enhancement
315 Description: omit set fsid for export NFS
316 Details : fix set/restore device id for avoid EMFILE error and mark lustre fs
317 as FS_REQUIRES_DEV for avoid problems with generate fsid.
321 Frequency : Always, for kernels after 2.6.16
322 Description: Fix warning idr_remove called for id=.. which is not
324 Details : Last kernels save old s_dev before kill super and not allow
325 to restore from callback - restore it before call kill_anon_super.
329 Description: buffer overruns could theoretically occur
330 Details : llapi_semantic_traverse() modifies the "path" argument by
331 appending values to the end of the origin string, and a
332 overrun may occur. Adding buffer overrun check in liblustreapi.
336 Description: client sometimes tried revalidate root dentry.
337 Details : not revalidate dentry if it root dentry.
341 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
342 Details : Modify vm-tunables-rhel4.patch.
346 Description: Kernel config for 2.6.18-vanilla.
347 Details : Modify targets/2.6-vanilla.target.in.
348 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
349 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
350 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
351 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
355 Description: improve handling recoverable errors
356 Details : if request processig with error which can be recoverable on server
357 request should be resend, otherwise page released from cache and
362 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
363 Details : Modify target file & which_patch.
364 A flaw was found in the IA32 system call emulation provided
365 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
366 value could be stored in the %RAX register, which could trigger an
367 out-of-bounds system call table access. An untrusted local user
368 could exploit this flaw to run code in the kernel
369 (ie a root privilege escalation). (CVE-2007-4573).
373 Description: Remove 2.4 kernel checks lustre 1.8
374 Details : Remove 2.5.0 check from quota_check.c, quota_ctl.c,
375 quota_interface.c in quota subsystem.
376 Remove 2.4 kernel check from obd_mount.c, linux/linux-sysctl.c in
381 --------------------------------------------------------------------------------
383 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
385 * Support for kernels:
386 2.6.5-7.283 (SLES 9),
387 2.6.9-55.EL (RHEL 4),
388 2.6.16.46-0.14 (SLES 10),
389 2.6.18.8 vanilla (kernel.org)
390 * Client support for unpatched kernels:
391 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
392 2.6.16 - 2.6.22 vanilla (kernel.org)
393 * Due to recently discovered recovery problems, we do not recommend
394 using patchless RHEL 4 clients with this or any earlier release.
395 * Recommended e2fsprogs version: 1.39.cfs8
396 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
397 * Starting with this release, the ldiskfs backing filesystem required
398 by Lustre is now in its own package, lustre-ldiskfs. This package
399 should be installed. It is versioned separately from Lustre and
400 may be released separately in future.
404 Description: block reactivating mgc import until all deactivates complete
405 Details : Fix race when failing back MDT/MGS to itself (testing)
407 Severity : enhancement
409 Description: add optional extra BUILD_VERSION info
410 Details : add a new environment variable (namely LUSTRE_VERS) which allows
411 to override the lustre version.
414 Frequency : 2.6.18 servers only
416 Description: ll_kern_mount() doesn't release the module reference
417 Details : The ldiskfs module reference count never drops down to 0
418 because ll_kern_mount() doesn't release the module reference.
423 Description: server LBUG when using old ost_num_threads parameter
424 Details : Accept the old ost_num_threads parameter but warn that it
425 is deprecated, and fix an off-by-one error that caused an LBUG.
430 Description: Transient SCSI error results in persistent IO issue
431 Details : iobuf->dr_error is not reinitialized to 0 between two
435 Frequency : sometimes when underlying device returns I/O errors
437 Description: OSTs not going read-only during write failures
438 Details : OSTs are not remounted read-only when the journal commit threads
439 get I/O errors because fsfilt_ext3 calls journal_start/stop()
440 instead of the ext3 wrappers.
444 Description: poor connect scaling with increasing client count
445 Details : Don't run filter_grant_sanity_check for more than 100 exports
446 to improve scaling for large numbers of clients.
449 Frequency : SLES10 only
451 Description: sanity-quota.sh quotacheck failed: rc = -22
452 Details : Quotas cannot be enabled on SLES10.
455 Frequency : liblustre clients only
457 Description: getdirentries does not give error when run on compute nodes
458 Details : getdirentries does not fail when the size specified as an argument
459 is too small to contain at least one entry
461 Severity : enhancement
463 Description: Add LNET router traceability for debug purposes
464 Details : If a checksum failure occurs with a router as part of the
465 IO path, the NID of the last router that forwarded the bulk data
466 is printed so it can be identified.
471 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
472 Details : Due to a race condition, liblustre clients were occasionally
475 Severity : enhancement
477 Description: lfs setstripe use optional parameters instead of postional
480 Severity : enhancement
482 Description: Nanosecond timestamp support for ldiskfs
483 Details : The on-disk ldiskfs filesystem has added support for nanosecond
484 resolution timestamps. There is not yet support for this at
485 the Lustre filesystem level.
488 Frequency : during server recovery
490 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
491 Details : request with rq_no_resend flag not awake l_wait_event if they get a
495 Frequency : nfs export on patchless client
497 Description: connectathon hang when test nfs export over patchless client
498 Details : Disconnected dentry cannot be found with lookup, so we do not need
499 to unhash it or make it invalid
502 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
503 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
504 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
509 Description: open req refcounting wrong on reconnect
510 Details : If reconnect happened between getting open reply from server and
511 call to mdc_set_replay_data in ll_file_open, we will schedule
512 replay for unreferenced request that we are about to free.
513 Subsequent close will crash in variety of ways.
514 Check that request is still eligible for replay in
515 mdc_set_replay_data().
520 Description: disable writes to filesystem when reading health_check file
521 Details : the default for reading the health_check proc file has changed
522 to NOT do a journal transaction and write to disk, because this
523 can cause reads of the /proc file to hang and block HA state
524 checking on a healthy but otherwise heavily loaded system. It
525 is possible to return to the previous behaviour during configure
526 with --enable-health-write.
528 Severity : enhancement
530 Description: 64-bit inode version
531 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
532 to the inode. This will be required for version-based recovery.
537 Description: MDS fails to start if a duplicate client export is detected
538 Details : in some rare cases it was possible for a client to connect to
539 an MDS multiple times. Upon recovery the MDS would detect this
540 and fail during startup. Handle this more gracefully.
542 Severity : enhancement
544 Description: Add -o localflock option to simulate old noflock
546 Details : This will achieve local-only flock/fcntl locks
552 Description: log_commit_thread vs filter_destroy race leads to crash
553 Details : Take import reference before releasing llog record semaphore
558 Description: Wrong request locking in request set processing
559 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
560 imp_delayed_list, in this place should be used imp_lock.
563 Frequency : when reconnection
565 Description: Grant Leak when osc reconnect to OST
566 Details : When osc reconnect ost, OST(filter) should check whether it
567 should grant more space to client by comparing fed_grant and
568 cl_avail_grant, and return the granted space to client instead
569 of "new granted" space, because client will call osc_init_grant
570 to update the client grant space info.
573 Frequency : when client reconnect to OST
575 Description: Grant Leak when osc do resend and replay bulk write
576 Details : When osc reconnect to OST, OST(filter)should clear grant info of
577 bulk write request, because the grant info while be sync between
578 OSC and OST when reconnect, and we should ignore the grant info
579 these of resend/replay write req.
584 Description: Grant space more than avaiable left space sometimes.
585 Details : When then OST is about to be full, if two bulk writing from
586 different clients came to OST. Accord the avaliable space of the
587 OST, the first req should be permitted, and the second one
588 should be denied by ENOSPC. But if the seconde arrived before
589 the first one is commited. The OST might wrongly permit second
590 writing, which will cause grant space > avaiable space.
593 Frequency : when client is evicted
595 Description: Grant might be wrongly erased when osc is evicted by OST
596 Details : when the import is evicted by server, it will fork another
597 thread ptlrpc_invalidate_import_thread to invalidate the
598 import, where the grant will be set to 0. While the original
599 thread will update the grant it got when connecting. So if
600 the former happened latter, the grant will be wrongly errased
601 because of this race.
606 Description: Checking Stale with correct fid
607 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
608 to check whether it is stale, because sometimes, we want the
609 enqueue happened anyway, and op_data.fid2 will not be initialized.
611 Severity : enhancement
613 Description: update patchless client
614 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
617 Frequency : only with 2.4 kernel
619 Description: random memory corruption
620 Details : size of struct ll_inode_info is to big for union inode.u and this
621 can be cause of random memory corruption.
626 Description: Memory leak in recovery
627 Details : Lov_mds_md was not free in an error handler in mds_create_object.
628 It should also check obd_fail before fsfilt_start, otherwise if
629 fsfilt_start return -EROFS,(failover mds during mds recovery).
630 then the req will return with repmsg->transno = 0 and rc = EROFS.
631 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
632 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
633 be freed no matter whether fsfilt_commit success or not.
636 Frequency : only with huge count clients
638 Description: Prevents from taking the superblock lock in llap_from_page for
640 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
641 for llap_from_page call in ll_removepage prevents from taking the
642 superblock lock for a soon died page.
647 Description: Not check open intent error before release open handle
648 Details : in some rare cases, the open intent error is not checked before
649 release open handle, which may cause
650 ASSERTION(open_req->rq_transno != 0), because it tries to release
651 the failed open handle.
656 Description: Set cat log bitmap only after create log success.
657 Details : in some rare cases, the cat log bitmap is set too early. and it
658 should be set only after create log success.
662 Description: Accessing a block bevice can re-enable I/O when Lustre is
663 tearing down a device.
664 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
669 Description: service threads may hog cpus when there are a lot of requests
671 Details : Insert cond_resched to give other threads a chance to use some of
677 Description: the cat log was not initialized in recovery
678 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
679 unlink log on mds will not be initialized until mds post
680 recovery. And also in mds post recovery, the unlink log will
681 initialization will be done asynchronausly, so there will be race
682 between add unlink log and unlink log initialization.
686 Description: brw_stats were being printed incorrectly
687 Details : brw_stats were being printed as log2 but all of them were not
688 recorded as log2. Also remove some code duplication arising from
689 filter_tally_{read,write}.
693 Frequency : rare, only in recovery.
694 Description: ASSERTION(req->rq_type != LI_POISON) failed
695 Details : imp_lock should be held while iterating over imp_sending_list for
696 prevent destroy request after get timeout in ptlrpc_queue_wait.
700 Description: replay-single.sh test 52 fails
701 Details : A lock's skiplist need to be cleanup when it being unlinked
702 from its resource list.
706 Description: Short directio read returns full requested size rather than
708 Details : Direct I/O operations should return actual amount of bytes
709 transferred rather than requested size.
711 Severity : enhancement
713 Description: metadata RPC reduction (e.g. for rm performance)
714 Details : decrease the amount of synchronous RPC between clients and servers
715 by canceling conflicing lock before the operation on the client side
716 and packing thier handles into the main operation RPC to server.
718 Severity : enhancement
720 Description: Async OSC create to avoid the blocking unnecessarily.
721 Details : If a OST has no remain object, system will block on the creating
722 when need to create a new object on this OST. Now, ways use
723 pre-created objects when available, instead of blocking on an
724 empty osc while others are not empty. If we must block, we block
725 for the shortest possible period of time.
729 Description: improve handling recoverable errors
730 Details : if request processig with error which can be recoverable on server
731 request should be resend, otherwise page released from cache and
734 Severity : enhancement
736 Description: refine locking for avoid write wrong info into lov_objid file
737 Details : fix possible races with add new target and write/update data in
740 --------------------------------------------------------------------------------
742 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
747 Frequency : on some architectures
749 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
750 Details : Uninitialized flags sometimes cause configuration commands to
754 Frequency : patchless clients only
756 Description: missing __iget() symbol export
757 Details : The __iget() symbol export is missing. To avoid the need for
758 this on patchless clients the deathrow inode reaper is turned
759 off, and we depend on the VM to clean up old inodes. This
760 dependency was during via the fix for bug 12181.
762 --------------------------------------------------------------------------------
764 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
766 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
767 INTEROPERATE with older versions automatically. In many cases a
768 special upgrade step is needed. Please read the
769 user documentation before upgrading any part of a live system.
770 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
771 version will not interoperate with 1.6 betas before beta5 (1.5.95).
772 * WARNING: Lustre configuration and startup changes are required with
773 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
779 Severity : enhancement
781 Description: MountConf
782 Details : Lustre configuration is now managed via mkfs and mount
783 commands instead of lmc and lconf. New obd types (MGS, MGC)
784 are added for dynamic configuration management. See
785 https://mail.clusterfs.com/wikis/lustre/MountConf for
788 Severity : enhancement
790 Description: dynamic OST addition
791 Details : OSTs can now be added to a live filesystem
793 Severity : enhancement
795 Description: startup order invariance
796 Details : MDTs and OSTs can be started in any order. Clients only
797 require the MDT to complete startup.
799 Severity : enhancement
801 Description: parallel, asynchronous orphan cleanup
802 Details : orphan cleanup is now performed in separate threads for each
803 OST, allowing parallel non-blocking operation.
805 Severity : enhancement
807 Description: optimized stripe assignment
808 Details : stripe assignments are now made based on ost space available,
809 ost previous usage, and OSS previous usage, in order to try
810 to optimize storage space and networking resources.
812 Severity : enhancement
814 Description: Permanently set tunables
815 Details : All writable /proc/fs/lustre tunables can now be permanently
816 set on a per-server basis, at mkfs time or on a live
819 Severity : enhancement
821 Description: Lustre message v2
822 Details : Add lustre message format v2.
824 Severity : enhancement
826 Description: client OST exclusion list
827 Details : Clients can be started with a list of OSTs that should be
828 declared "inactive" for known non-responsive OSTs.
832 Description: SPEC SFS validation failure on NFS v2 over lustre.
833 Details : Changes the blocksize for regular files to be 2x RPC size,
834 and not depend on stripe size.
836 Severity : enhancement
838 Description: Multiple MD RPCs in flight.
839 Details : Further unserialise some read-only MDS RPCs - learn about intents.
840 To avoid overly-overloading MDS, introduce a limit on number of
841 MDS RPCs in flight for a single client and add /proc controls
842 to adjust this limit.
844 Severity : enhancement
846 Description: client read/write statistics
847 Details : Add client read/write call usage stats for performance
848 analysis of user processes.
849 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
850 file access. extents_stats shows chunk size distribution.
851 extents_stats_per_process show chunk size distribution per
854 Severity : enhancement
856 Description: mds statistics
857 Details : Add detailed mds operations statistics in
858 /proc/fs/lustre/mds/*/stats.
862 Description: Failure of copying files with lustre special EAs.
863 Details : Client side always return success for setxattr call for lustre
864 special xattr (currently only "trusted.lov").
869 Description: Refcount LNET uuids
870 Details : The global LNET uuid list grew linearly with every startup;
871 refcount repeated list entries instead of always adding to
874 Severity : enhancement
876 Description: Dynamic service threads
877 Details : Within a small range, start extra service threads
878 automatically when the request queue builds up.
881 Frequency : mixed-endian client/server environments
883 Description: mixed-endian crashes
884 Details : The new msg_v2 system had some failures in mixed-endian
887 Severity : enhancement
889 Description: Easy OST removal
890 Details : OSTs can be permanently deactivated with e.g. 'lctl
891 conf_param lustre-OST0001.osc.active=0'
893 Severity : enhancement
895 Description: MGS proc entries
896 Details : Added basic proc entries for the MGS showing what filesystems
899 Severity : enhancement
901 Description: provide MGS failover
902 Details : Added config lock reacquisition after MGS server failover.
904 Severity : enhancement
906 Description: add Linux 2.4 support
907 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
911 Description: a large application tries to do I/O to the same resource and dies
913 Details : Check the req->rq_arrival time after the call to
914 ost_brw_lock_get(), but before we do anything about
915 processing it & sending the BULK transfer request. This
916 should help move old stale pending locks off the queue as
917 quickly as obd_timeout.
920 Frequency : when an incorrect nid is specified during startup
922 Description: ptlrpc connect to non-existant node causes kernel crash
923 Details : LNET can't be re-entered from an event callback, which
924 happened when we expire a message after the export has been
925 cleaned up. Instead, hand the zombie cleanup off to another
928 Severity : enhancement
930 Description: plain/inodebits lock performance improvement
931 Details : Grouping plain/inodebits in granted list by their request modes
932 and bits policy, thus improving the performance of search through
936 Frequency : only if OST filesystem is corrupted
938 Description: client incorrectly hits assertion in ptlrpc_replay_req()
939 Details : for a short time RPCs with bulk IO are in the replay list,
940 but replay of bulk IOs is unimplemented. If the OST filesystem
941 is corrupted due to disk cache incoherency and then replay is
942 started it is possible to trip an assertion. Avoid putting
943 committed RPCs into the replay list at all to avoid this issue.
946 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
948 Description: System hang on startup
949 Details : This bug allowed the liblustre (e.g. catamount) client to
950 return to the app before handling all startup RPCs. This
951 could leave the node unresponsive to lustre network traffic
952 and manifested as a server ptllnd timeout.
954 Severity : enhancement
956 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
957 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
958 boolean to control whether to print peer debug info when a
959 client's RPC times out.
962 Frequency : only for kernels with patches from Lustre below 1.4.3
964 Description: Remove old rdonly API
965 Details : Remove old rdonly API which unused from at least lustre 1.4.3
968 Frequency : only for devices with external journals
970 Description: Set external device read-only also
971 Details : During a commanded failover stop, we set the disk device
972 read-only while the server shuts down. We now also set any
973 external journal device read-only at the same time.
976 Frequency : when upgrading from 1.4 while trying to change parameters
978 Description: The wrong (new) MDC name was used when setting parameters for
979 upgraded MDT's. Also allows changing of OSC (and MDC)
980 parameters if --writeconf is specified at tunefs upgrade time.
983 Frequency : when setting specific ost indicies
985 Description: QOS code breaks on skipped indicies
986 Details : Add checks for missing OST indicies in the QOS code, so OSTs
987 created with --index need not be sequential.
989 Severity : enhancement
991 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
992 Details : The uninit_groups feature works in conjunction with the kernel
993 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
994 up the pass1 processing of e2fsck. This is a read-only feature
995 in ldiskfs2 only, so older kernels and current ldiskfs cannot
996 mount filesystems that have had this feature enabled.
998 Severity : enhancement
1000 Description: Improve multi-block allocation algorithm to avoid fragmentation
1001 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1002 allocation locality and avoid filesystem fragmentation.
1004 ------------------------------------------------------------------------------
1006 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
1008 * Support for kernels:
1009 2.4.21-47.0.1.EL (RHEL 3)
1010 2.6.5-7.283 (SLES 9)
1011 2.6.9-42.0.10.EL (RHEL 4)
1012 2.6.12.6 vanilla (kernel.org)
1013 2.6.16.27-0.9 (SLES 10)
1014 * Recommended e2fsprogs version: 1.39.cfs5
1016 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1020 Frequency : occasional, depends on client load and configuration
1021 Bugzilla : 12181, 12203
1022 Description: data loss for recently-modified files
1024 Details : In some cases it is possible that recently written or created
1025 files may not be written to disk in a timely manner (this should
1026 normally be within 30s unless client IO load is very high).
1027 The problem appears as zero-length files or files that are a
1028 multiple of 1MB in size after a client crash or client eviction
1029 that are missing data at the end of the file.
1031 This problem is more likely to be hit on clients where files are
1032 repeatedly created and unlinked in the same directory, clients
1033 have a large amount of RAM, have many CPUs, the filesystem has
1034 many OSTs, the clients are rebooted frequently, and/or the files
1035 are not accessed by other nodes after being written.
1037 The presence of the problem can be detected by looking at
1038 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
1039 smaller than the second (nr_unused) then dirty files will not
1040 be flushed automatically to disk. "sync; sleep 10" should be
1041 run several times on the node before unmounting it to update
1042 Lustre (this is also safe to run on nodes without this problem).
1044 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
1045 that can cause this same problem, so customers using that kernel
1046 also need to update the kernel in addition to Lustre. In order
1047 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
1049 It is normal that files written just before a client crash (less
1050 than 30s) may not yet have been flushed to disk, even for local
1054 Frequency : frequent on thin XT3 nodes
1056 Description: UUID collision on thin XT3 Linux nodes
1057 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
1058 randomly, since we relied on an insufficiently-seeded PRNG.
1063 Description: OSS hangs after "All ost request buffers busy"
1064 Details : A deadlock between quota and journal operations caused OSS
1065 hangs after printing "All ost request buffers busy."
1068 Frequency : always on liblustre builds
1070 Description: Cleanup compiler warnings on liblustre
1073 Frequency : always on liblustre builds on XT3
1075 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
1079 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
1080 > 32000 subdirectories
1081 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
1082 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
1083 subdirectory count crosses 32000. This will aid e2fsck to
1084 correctly handle more than 32000 subdirectories.
1087 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
1089 Description: System hang on startup
1090 Details : This bug allowed the liblustre (e.g. catamount) client to
1091 return to the app before handling all startup RPCs. This
1092 could leave the node unresponsive to lustre network traffic
1093 and manifested as a server ptllnd timeout.
1095 Severity : enhancement
1097 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
1098 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
1099 boolean to control whether to print peer debug info when a
1100 client's RPC times out.
1105 Description: make O_SYNC working on 2.6 kernels
1106 Details : 2.6 kernels use different method for mark pages for write,
1107 so need add a code to lustre for O_SYNC work.
1112 Description: Failure to close file and release space on NFS
1113 Details : Put inode details into lock acquired in ll_intent_file_open.
1114 Use mdc_intent_lock in ll_intent_open to properly
1115 detect all kind of errors unhandled by mdc_enqueue.
1120 Description: proc file read during shutdown sometimes raced obd removal,
1122 Details : Add lock to prevent obd access after proc file removal.
1125 Frequency : Only for files larger than 4GB on 32-bit clients.
1127 Description: improperly doing page alignment of locks
1128 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
1129 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
1134 Description: RPCs being resent when they shouldn't be
1135 Details : Some RPCs that should not be resent are being resent. This
1136 can cause inconsistencies in the RPC state machine. Do not
1137 resend such requests.
1140 Frequency : rare, only with NFS export
1142 Description: Crash on NFS re-export node
1143 Details : under very unusual load conditions an assertion is hit in
1144 ll_intent_file_open()
1147 Frequency : only if OST filesystem is corrupted
1149 Description: client incorrectly hits assertion in ptlrpc_replay_req()
1150 Details : for a short time RPCs with bulk IO are in the replay list,
1151 but replay of bulk IOs is unimplemented. If the OST filesystem
1152 is corrupted due to disk cache incoherency and then replay is
1153 started it is possible to trip an assertion. Avoid putting
1154 committed RPCs into the replay list at all to avoid this issue.
1159 Description: large O_DIRECT requests fail under memory pressure/fragmentation
1160 Details : Large single O_DIRECT read and write calls can fail to allocate
1161 a sufficiently large buffer to process the request. In case of
1162 allocation failure the allocation is retried with a smaller
1163 buffer and broken into smaller requests.
1165 Severity : enhancement
1167 Description: Add -o localflock option to simulate old noflock behaviour.
1168 Details : This will achieve local-only flock/fcntl locks coherentness.
1173 Description: versioning check is incomplete
1174 Details : Checking the version difference of client vs. server, report
1175 error if the gap is too big.
1180 Description: add support PG_writeback bit
1181 Details : add support for PG_writeback bit for Lustre, for more carefull
1182 work with page cache in 2.6 kernel. This also fix some deadlocks
1183 and remove hack for work O_SYNC with 2.6 kernel.
1185 Severity : enhancement
1187 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
1188 Details : The uninit_groups feature works in conjunction with the kernel
1189 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
1190 up the pass1 processing of e2fsck. This is a read-only feature
1191 in ldiskfs2 only, so older kernels and current ldiskfs cannot
1192 mount filesystems that have had this feature enabled.
1194 Severity : enhancement
1196 Description: Improve multi-block allocation algorithm to avoid fragmentation
1197 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1198 allocation locality and avoid filesystem fragmentation.
1200 ------------------------------------------------------------------------------
1202 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
1204 * Support for kernels:
1205 2.6.9-42.0.3.EL (RHEL 4)
1206 2.6.5-7.276 (SLES 9)
1207 2.4.21-47.0.1.EL (RHEL 3)
1208 2.6.12.6 vanilla (kernel.org)
1209 2.6.16.21-0.8 (SLES10)
1210 * Recommended e2fsprogs version: 1.39.cfs2-0
1212 * The backwards-compatible /proc/sys/portals symlink has been removed
1213 in this release. Before upgrading, please ensure that you change
1214 any configuration scripts or /etc/sysctl.conf files that access
1215 /proc/sys/portals/* or sysctl portals.* to use the corresponding
1216 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
1217 in advance of the upgrade on any system running Lustre 1.4.6 or
1218 newer, since /proc/sys/lnet was added in that version.
1219 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1223 Frequency : only when quota is used
1225 Description: avoid scanning export list for quota master
1226 Details : Change the algorithms to avoid scanning export list in order
1227 to improve the efficiency.
1230 Frequency : MDS failover only, very rarely
1232 Description: "went back in time" messages on mds failover
1233 Details : The greatest transno may be lost when the current operation
1234 finishes with an error (transno==0) and the client's last_rcvd
1235 record is over-written. Save the greatest transno in the
1236 mds_last_transno for this case.
1239 Frequency : always for specific kernels and striping counts
1241 Description: client may get "Matching packet too big" without ACL support
1242 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
1243 when trying to access files in certain configurations. The
1244 clients should in fact be denied when mounting because they do
1245 not understand ACLs.
1248 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
1250 Description: many clients connecting with IO in progress causes connect timeouts
1251 Details : Avoid synchronous journal commits to avoid delays caused by many
1252 clients connecting/disconnecting when bulk IO is in progress.
1253 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
1254 OST_IO_PORTAL to avoid delays behind potentially many pending
1258 Frequency : occasionally with multiple writers to a single file
1260 Description: shared writes to file may result in wrong size reported by stat()
1261 Details : Allow growing of kms when extent lock is cancelled
1264 Frequency : always with random mmap IO to multi-striped file
1266 Description: mmap write might be lost if we are writing to a 'hole' in stripe
1267 Details : Only if the hole is at the end of OST object so that kms is too
1268 small. Fix is to increase kms accordingly in ll_nopage.
1271 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
1273 Description: writes to a missing object would leak memory on the OST
1274 Details : If there is an inconsistency between the MDS and OST filesystems,
1275 such that the MDS references an object that doesn't exist, writes
1276 to that object will leak memory due to incorrect cleanup in the
1277 error handling path, eventually running out of memory on the OST.
1282 Description: Creating too long symlink causes lustre errors
1283 Details : Check symlink and name lengths before sending requests to MDS.
1286 Frequency : only if flock is enabled (not on by default)
1288 Description: posix locks not released on fd closure on 2.6.9+
1289 Details : We failed to add posix locks to list of inode locks on 2.6.9+
1290 kernels, this caused such locks not to be released on fd close and
1291 then assertions on fs unmount about still used locks.
1294 Frequency : MDS failover only, very rarely
1296 Description: clients may get ASSERTION(granted_lock != NULL)
1297 Details : When request was taking a long time, and a client was resending
1298 a getattr by name lock request. The were multiple lock requests
1299 with the same client lock handle and
1300 mds_getattr_name->fixup_handle_for_resent_request found one of the
1301 lock handles but later failed with ASSERTION(granted_lock != NULL).
1306 Description: handle->h_buffer_credits > 0, assertion failure
1307 Details : h_buffer_credits is zero after truncate, causing assertion
1308 failure. This patch extends the transaction or creates a new
1312 Frequency : NFS re-export or patchless client
1313 Bugzilla : 11179, 10796
1314 Description: Crash on NFS re-export node (__d_move)
1315 Details : We do not want to hash the dentry if we don't have a lock.
1316 But if this dentry is later used in d_move, we'd hit uninitialised
1317 list head d_hash, so we just do this to init d_hash field but
1318 leave dentry unhashed.
1321 Frequency : NFS re-export or patchless client
1323 Description: NFS exports has problem with symbolic link
1324 Details : lustre client didn't properly install dentry when re-exported
1325 to NFS or running patchless client.
1328 Frequency : NFS re-export or patchless client
1330 Description: Various nfs/patchless fixes.
1331 Details : fixes reuse disconected alias for lookup process - this fixes
1332 warning "find_exported_dentry: npd != pd",
1333 fix permission error with open files at nfs.
1334 fix apply umask when do revalidate.
1337 Frequency : occasional
1339 Description: Crash on NFS re-export node
1340 Details : calling clear_page() on the wrong pointer triggered oops in
1341 generic_mapping_read().
1344 Frequency : rarely, using O_DIRECT IO
1346 Description: unaligned directio crashes client with LASSERT
1347 Details : check for unaligned buffers before trying any requests.
1350 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
1352 Description: stale data returned from RAID cache
1353 Details : If only a small amount of IO is done to the RAID device before
1354 reading it again it is possible to get stale data from the RAID
1355 cache instead of reading it from disk.
1358 Frequency : always for sles10 kernel
1360 Description: sles10 support
1361 Details : ll_follow_link: compile fixes and using of nd_set_link
1362 under newer kernels.
1365 Frequency : depends on arch, kernel and compiler version, always on sles10
1368 Description: recursive or deep enough symlinks cause stack overflow
1369 Details : getting rid of large stack-allocated variable in
1373 Frequency : depends on hardware
1375 Description: lustre write performance loss in the SLES10 kernel
1376 Details : the performance loss is caused by using of write barriers in the
1377 ext3 code. The SLES10 kernel turns barrier support on by
1378 default. The fix is to undo that change for ldiskfs.
1380 ------------------------------------------------------------------------------
1382 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
1384 * Support for kernels:
1385 2.6.9-42.0.3EL (RHEL 4)
1386 2.6.5-7.276 (SLES 9)
1387 2.4.21-47.0.1.EL (RHEL 3)
1388 2.6.12.6 vanilla (kernel.org)
1392 Frequency : quota enabled and large files being deleted
1394 Description: releasing more than 4GB of quota at once hangs OST
1395 Details : If a user deletes more than 4GB of files on a single OST it
1396 will cause the OST to spin in an infinite loop. Release
1397 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
1402 Description: statfs data retrieved from /proc may be stale or zero
1403 Details : When reading per-device statfs data from /proc, in the
1404 {kbytes,files}_{total,free,avail} files, it may appear
1405 as zero or be out of date.
1408 Frequency : systems with MD RAID1 external journal devices
1410 Description: lconf's call to blkid is confused by RAID1 journal devices
1411 Details : Use the "blkid -l" flag to locate the MD RAID device instead
1412 of returning all block devices that match the journal UUID.
1415 Frequency : always, for aggregate stripe size over 4GB
1417 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
1418 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
1419 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
1422 Frequency : always if "lfs find" used on a local file/directory
1424 Description: "lfs find" segfaults if used on a local file/directory
1425 Details : The case where a directory component was not specified wasn't
1426 handled correctly. Handle this properly.
1429 Frequency : always on ppc64
1431 Description: the write to an ext3 filesystem mounted with mballoc got stuck
1432 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
1433 perform endianness conversion.
1436 Frequency : rarely (truncate to non-zero file size after write under load)
1437 Bugzilla : 10730, 10687
1438 Description: Files padded with zeros to next 4K multiple
1439 Details : With filesystems mounted using the "extents" option (2.6 kernels)
1440 it is possible that files that are truncated to a non-zero size
1441 immediately after being written are filled with zero bytes beyond
1442 the truncated size. No file data is lost.
1444 Severity : enhancement
1446 Description: Allow recovery/failover for liblustre clients.
1447 Details : liblustre clients were unaware of failover configurations until
1450 Severity : enhancement
1452 Description: user file locks should fail when not mounting with flock option
1453 Details : Set up an error-returning stub in ll_file_operations.lock field
1454 to prevent incorrect behaviour when client is mounted without
1455 flock option. Also, set up properly f_op->flock field for
1459 Frequency : always on ia64
1461 Description: "lfs df" loops on printing out MDS statfs information
1462 Details : The obd_ioctl_data was not initialized and in some systems
1463 this caused a failure during the ioctl that did not return
1464 an error. Initialize the struct and return an error on failure.
1467 Frequency : SLES 9 only
1469 Description: Error of copying files with lustre special EAs as root
1470 Details : Client side always return success for setxattr call for lustre
1471 special xattr (currently only "trusted.lov").
1474 Frequency : rarely on clusters with both ia64+i386 clients
1476 Description: ia64+i686 clients doing shared IO on the same file may LBUG
1477 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
1478 clients are doing concurrent writes to the same file it is
1479 possible that the ia64 clients may LASSERT because the OST
1480 extent locks are not PAGE_SIZE aligned. Ensure that grown
1481 locks are always aligned on the request boundary.
1484 Frequency : specific use, occasional
1486 Description: Overwriting in use executable truncates on-disk binary image
1487 Details : If one node attempts to overwrite an executable in use by
1488 another node, we now correctly return ETXTBSY instead of
1489 truncating the file.
1491 Severity : enhancement
1493 Description: Async OSC create to avoid the blocking unnecessarily.
1494 Details : If a OST has no remain object, system will block on the creating
1495 when need to create a new object on this OST. Now, ways use
1496 pre-created objects when available, instead of blocking on an
1497 empty osc while others are not empty. If we must block, we block
1498 for the shortest possible period of time.
1503 Description: chmod on Lustre root is propagated to other clients
1504 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
1505 invalid by the follow_mount time.
1508 Frequency : liblustre clients only
1510 Description: Race in 'instant cancel' lock handling could lead to such locks
1511 never to be granted in case of SMP MDS
1512 Details : Do not destroy not yet granted but cbpending locks in
1516 Frequency : replay/resend of open
1518 Description: non null lock assetion failure in mds_intent_policy
1519 Details : Trying to replay/resend lockless open requests resulted in
1520 mds_open() returning 0 with no lock. Now it sets a flag if
1521 a lock is going to be returned.
1523 Severity : enhancement
1525 Description: Checksum enhancements
1526 Details : New checksum enhancements allow for resending RPCs that failed
1529 Severity : enhancement
1531 Description: Tunables on number of dirty pages in cacche
1532 Details : Allow to set limit on number of dirty pages cached.
1537 Description: client crash on unmount - lock still has references
1538 Details : In some error handling cases it was possible to leak a lock
1539 reference on a client while accessing a file. This was not
1540 harmful to the client during operation, but would cause the
1541 client to crash when the filesystem is unmounted.
1544 Frequency : specific case, rare
1546 Description: ETXTBSY on mds though file not in use by client
1547 Details : ETXTBSY is no longer incorrectly returned when attempting to
1548 chmod or chown a directory that the user previously tried to
1549 execute or a currently-executing binary.
1552 Frequency : extremely rare except on liblustre-based clients
1554 Description: Lustre space not freed when files are deleted
1555 Details : Clean up open-unlinked files after client eviction. Previously
1556 the unlink was skipped and the files remained as orphans.
1561 Description: OST failure "would be an LBUG" in waiting_locks_callback()
1562 Details : In some cases it was possible to send a blocking callback to
1563 a client doing a glimpse, even though that client didn't get
1564 a lock granted. When the glimpse lock is cancelled on the OST
1565 the freed lock is left on the waiting list and corrupted the list.
1568 Frequency : all core dumps
1570 Description: Broke core dumps to lustre
1571 Details : Negative dentry may be unhashed if parent does not have UPDATE
1572 lock, but some callers, e.g. do_coredump, expect dentry to be
1573 hashed after successful create, hash it in ll_create_it.
1575 ------------------------------------------------------------------------------
1577 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
1579 * Support for kernels:
1580 2.6.9-42.0.2.EL (RHEL 4)
1581 2.6.5-7.276 (SLES 9)
1582 2.4.21-40.EL (RHEL 3)
1583 2.6.12.6 vanilla (kernel.org)
1587 Frequency : always on RHEL 3
1589 Description: Number of open files grows over time
1590 Details : The number of open files grows over time, whether or not
1591 Lustre is started. This was due to a filp leak introduced
1592 by one of our kernel patches.
1594 ------------------------------------------------------------------------------
1596 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
1598 * Support for kernels:
1599 2.6.9-42.EL (RHEL 4)
1600 2.6.5-7.276 (SLES 9)
1601 2.4.21-40.EL (RHEL 3)
1602 2.6.12.6 vanilla (kernel.org)
1607 Bugzilla : 5719, 9635, 9792, 9684
1608 Description: OST (or MDS) trips assertions in (re)connection under heavy load
1609 Details : If a server is under heavy load and cannot reply to new
1610 connection requests before the client resends the (re)connect,
1611 the connection handling code can behave badly if two service
1612 threads are concurrently handing separate (re)connections from
1613 the same client. Add better locking to the connection handling
1614 code, and ensure that only a single connection will be processed
1615 for a given client UUID, even if the lock is dropped.
1617 Severity : enhancement
1619 Description: add TCP zero-copy support to kernel
1620 Details : Add support to the kernel TCP stack to allow zero-copy bulk
1621 sends if the hardware supports scatter-gather and checksumming.
1622 This allows socklnd to do client-write and server-read more
1623 efficiently and reduce CPU utilization from skbuf copying.
1626 Frequency : only if NFS exporting from client
1628 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
1629 Details : If setting attributes on a file created under NFS that had
1630 never been opened it would be possible to oops the client
1631 if the file had no objects.
1634 Frequency : always for liblustre
1636 Description: liblustre client does MDS+OSTs setattr RPC for each write
1637 Details : When doing a write from a liblustre client, the client
1638 incorrectly issued an RPC to the MDS and each OST the file was
1639 striped over in order to update the timestamps. When writing
1640 with small chunks and many clients this could overwhelm the MDS
1641 with RPCs. In all cases it would slow down the write because
1642 these RPCs are unnecessary.
1644 Severity : enhancement
1646 Description: allow number of MDS service threads to be changed at module load
1647 Details : It is now possible to change the number of MDS service threads
1648 running. Adding "options mds mds_num_threads={N}" to the MDS's
1649 /etc/modprobe.conf will set the number of threads for the next
1650 time Lustre is restarted (assuming the "mds" module is also
1651 reloaded at that time). The default number of threads will
1652 stay the same, 32 for most systems.
1657 Description: OST crash if filesystem is unformatted or corrupt
1658 Details : If an OST is started on a device that has never been formatted
1659 or if the filesystem is corrupt and cannot even mount then the
1660 error handling cleanup routines would dereference a NULL pointer.
1665 Description: NULL pointer deref in llap_from_page.
1666 Details : get_cache_page_nowait can return a page with NULL (or otherwise
1667 incorrect) mapping if the page was truncated/reclaimed while it was
1668 searched for. Check for this condition and skip such pages when
1669 doing readahead. Introduce extra check to llap_from_page() to
1670 verify page->mapping->host is non-NULL (so page is not anonymous).
1673 Frequency : Sometimes when using sys_sendfile
1675 Description: "page not covered by a lock" warnings from ll_readpage
1676 Details : sendfile called ll_readpage without right page locks present.
1677 Now we introduced ll_file_sendfile that does necessary locking
1678 around call to generic_file_sendfile() much like we do in
1682 Frequency : with certain MDS communication failures at client mount time
1684 Description: NULL pointer deref after failed client mount
1685 Details : a client connection request may delayed by the network layer
1686 and not be sent until after the PTLRPC layer has timed out the
1687 request. If the client fails the mount immediately it will try
1688 to clean up before the network times out the request. Add a
1689 reference from the request import to the obd device and delay
1690 the cleanup until the network drops the request.
1693 Frequency : occasionally during client (re)connect
1695 Description: assertion failure during client (re)connect
1696 Details : processing a client connection request may be delayed by the
1697 client or server longer than the client connect timeout. This
1698 causes the client to resend the connection request. If the
1699 original connection request is replied in this interval, the
1700 client may trip an assertion failure in ptlrpc_connect_interpret()
1701 which thought it would be the only running connect process.
1704 Frequency : only with obd_echo servers and clients that are rebooted
1706 Description: kernel BUG accessing uninitialized data structure
1707 Details : When running an obd_echo server it did not start the ping_evictor
1708 thread, and when a client was evicted an uninitialized data
1709 structure was accessed. Start the ping_evictor in the RPC
1710 service startup instead of the OBD startup.
1712 Severity : enhancement
1713 Bugzilla : 10193 (patchless)
1714 Description: Remove dependency on various unexported kernel interfaces.
1715 Details : No longer need reparent_to_init, exit_mm, exit_files,
1716 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
1719 Frequency : rare (only users of deprecated and unsupported LDAP config)
1721 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
1722 Details : LDAP apparently contains 'lustreName' attributes instead of
1723 'name'. A simple remapping of the name is sufficient.
1726 Frequency : rare (only with non-default dump_on_timeout debug enabled)
1728 Description: waiting_locks_callback trips kernel BUG if client is evicted
1729 Details : Running with the dump_on_timeout debug flag turned on makes
1730 it possible that the waiting_locks_callback() can try to dump
1731 the Lustre kernel debug logs from an interrupt handler. Defer
1732 this log dumping to the expired_lock_main() thread.
1734 Severity : enhancement
1736 Description: Support NFS exporting on 2.6 kernels.
1737 Details : Implement non-rawops metadata methods for NFS server to use without
1738 changing NFS server code.
1741 Frequency : very rare (synthetic metadata workload only)
1743 Description: two racing renames might cause an MDS thread to deadlock
1744 Details : Running the "racer" program may cause one MDS thread to rename
1745 a file from being the source of a rename to being the target of
1746 a rename at exactly the same time that another thread is doing
1747 so, and the second thread has already enqueued these locks after
1748 doing a lookup of the target and is trying to relock them in
1749 order. Ensure that we don't try to re-lock the same resource.
1752 Frequency : only very large systems with liblustre clients
1754 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
1755 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
1756 all OSTs in parallel. This allows the eviction of stale liblustre
1757 clients to proceed much faster than if they were done in series,
1758 and also offers similar improvements for other set_info RPCs.
1763 Description: excessive CPU usage during initial read phase on client
1764 Details : During the initial read phase on a client, it would agressively
1765 retry readahead on the file, consuming too much CPU and impacting
1766 performance (since 1.4.5.8). Improve the readahead algorithm
1767 to avoid this, and also improve some other common cases (read
1768 of small files in particular, where "small" is files smaller than
1769 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
1774 Description: MDS crash when receiving packet with unknown intent.
1775 Details : Do not LBUG in unknown intent case, just return -EFAULT
1777 Severity : enhancement
1778 Bugzilla : 9293, 9385
1779 Description: MDS RPCs are serialised on client. This is unnecessary for some.
1780 Details : Do not serialize getattr (non-intent version) and statfs.
1783 Frequency : occasional, when OST network is overloaded/intermittent
1785 Description: client evicted by OST after bulk IO timeout
1786 Details : If a client sends a bulk IO request (read or write) the OST
1787 may evict the client if it is unresposive to its data GET/PUT
1788 request. This is incorrect if the network is overloaded (takes
1789 too long to transfer the RPC data) or dropped the OST GET/PUT
1790 request. There is no need to evict the client at all, since
1791 the pinger and/or lock callbacks will handle this, and the
1792 client can restart the bulk request.
1795 Frequency : Always when mmapping file with no objects
1797 Description: client crashes when mmapping file with no objects
1798 Details : Check that we actually have objects in a file before doing any
1799 operations on objects in ll_vm_open, ll_vm_close and
1805 Description: Request leak when working with deleted CWD
1806 Details : Introduce advanced request refcount tracking for requests
1807 referenced from lustre intent.
1809 Severity : Enhancement
1811 Description: Cache open file handles on client.
1812 Details : MDS now will return special lock along with openhandle, if
1813 requested and client is allowed to hold openhandle, even if unused,
1814 until such a lock is revoked. Helps NFS a lot, since NFS is opening
1815 closing files for every read/write openration.
1817 Severity : Enhancement
1819 Description: Cache open negative dentries on client when possible.
1820 Details : Guard negative dentries with UPDATE lock on parent dir, drop
1821 negative dentries on lock revocation.
1826 Description: Remounting a client read-only wasn't possible with a zconf mount
1827 Details : It wasn't possible to remount a client read-only with llmount.
1829 Severity : enhancement
1830 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
1831 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
1832 MPICH is included to add Lustre-specific ADIO interfaces.
1833 This is based closely on the UFS ADIO layer and only differs
1834 in file creation, in order to allow the OST striping to be set.
1835 This is user-contributed code and not supported by CFS.
1840 Description: extended inode attributes (immutable, append-only) work improperly
1841 when 2.4 and 2.6 kernels are used on client/server or vice versa
1842 Details : Introduce kernel-independent values for these flags.
1844 Severity : enhancement
1847 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
1848 Details : Many of the /proc/ tunables can only be tuned at a megabyte
1849 granularity. Now, Fractional MB granularity is be supported,
1850 this is very useful for low memory system.
1852 Severity : enhancement
1854 Description: Getattr by fid
1855 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
1856 locks, avoids extra getattr rpc requests to MDS, allows '/' to
1857 have locks and avoids getattr rpc requests for it on every stat.
1860 Frequency : Always, for filesystems larger than 2TB
1862 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1863 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
1864 filesystems larger than 2TB to be mounted with mballoc enabled.
1867 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
1869 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
1870 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
1871 filesystems larger than 2TB is mounted then the kernel will
1872 silently corrupt the start of the filesystem. CONFIG_LBD is
1873 enabled for all CFS-supported kernels, but the possibility of
1874 this happening with a modified kernel config exists.
1876 Severity : enhancement
1878 Description: add client O_DIRECT support for 2.6 kernels
1879 Details : It is now possible to do O_DIRECT reads and writes to files
1880 in the Lustre client mountpoint on 2.6 kernel clients.
1882 Severity : enhancement
1884 Description: parallel glimpse, setattr, statfs, punch, destroy requests
1885 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
1886 parallel, not waiting for response from every OST before sending
1887 a rpc to the next OST.
1892 Description: setattr vs write race when updating file timestamps
1893 Details : Client processes that update a file timestamp into the past
1894 right after writing to the file (e.g. tar) it is possible that
1895 the updated file modification time can be reset to the current
1896 time due to a race between processing the setattr and write RPC.
1898 Severity : enhancement
1900 Description: Bring 'lfs find' closer in line with regular Linux find.
1901 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
1902 -print0 options and obtains all the needed info through the lustre
1905 Severity : enhancement
1907 Description: support up to 1024 configured devices on one node
1908 Details : change obd_dev array from statically allocated to dynamically
1909 allocated structs as they are first used to reduce memory usage
1914 Description: Flush dirty partially truncated pages during truncate
1915 Details : Immediatelly flush partially truncated pages in filter_setattr,
1916 this way we completely avoid having any pages in page cache on OST
1917 and can retire ugly workarounds during writes to flush such pages.
1922 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1923 Details : protect inode from truncation within vfs_unlink() context
1924 just take a reference before calling vfs_unlink() and release it
1925 when parent's i_sem is free.
1930 Description: last_id value checked outside lock on OST caused LASSERT failure
1931 Details : If there were multiple MDS->OST object precreate requests in
1932 flight, it was possible that the OST's last object id was checked
1933 outside a lock and incorrectly tripped an assertion. Move checks
1934 inside locks, and discard old precreate requests.
1937 Frequency : always, if extents are used on OSTs
1939 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1940 Details : OSTs using the extents format would not zero the high 16 bits of
1941 the index physical block number. This is not a problem for any
1942 OST filesystems smaller than 16TB, and no kernels support ext3
1943 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1944 new/modified files) and can be fixed for existing filesystems
1945 with e2fsprogs-1.39-cfs1.
1950 Description: import connection selection may be incorrect if timer wraps
1951 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1952 import connections to be ignored if the 32-bit jiffies counter
1953 wraps. Use a 64-bit jiffies counter.
1956 Frequency : very large clusters immediately after boot
1958 Description: LNET request buffers exhausted under heavy short-term load
1959 Details : If a large number of client requests are generated on a service
1960 that has previously never seen so many requests it is possible
1961 that the request buffer growth cannot keep up with the spike in
1962 demand. Instead of dropping incoming requests, they are held in
1963 the LND until the RPC service can accept more requests.
1966 Frequency : Sometimes during replay
1968 Description: Assertion failure in ll_local_open after replay.
1969 Details : If replay happened on an open request reply before we were able
1970 to set replay handler, reply will become not swabbed tripping the
1971 assertion in ll_local_open. Now we set the handler right after
1972 recognising of open request
1975 Frequency : very rare
1977 Description: kernel reports "badness in vsnprintf"
1978 Details : Reading from the "recovery_status" /proc file in small chunks
1979 may cause a negative length in lprocfs_obd_rd_recovery_status()
1980 call to vsnprintf() (which is otherwise harmless). Exit early
1981 if there is no more space in the output buffer.
1983 Severity : enhancement
1985 Description: clear OBD RPC statistics by writing to them
1986 Details : It is now possible to clear the OBD RPC statistics by writing
1987 to the "stats" file.
1992 Description: Client mtime is not the same on different clients after utimes
1993 Details : In some cases, the client was using the utimes() syscall on
1994 a file cached on another node. The clients now validate the
1995 ctime from the MDS + OSTs to determine which one is right.
2000 Description: Inability to activate failout mode
2001 Details : lconf script incorrectly assumed that in pythong string's numeric
2002 value is used in comparisons.
2005 Frequency : always with multiple stripes per file
2007 Description: Inefficient object allocation for mutli-stripe files
2008 Details : When selecting which OSTs to stripe files over, for files with
2009 a stripe count that divides evenly into the number of OSTs,
2010 the MDS is always picking the same starting OST for each file.
2011 Return the OST selection heuristic to the original design.
2016 Description: mount failures may take full timeout to return an error
2017 Details : Under some heavy load conditions it is possible that a
2018 failed mount can wait for the full obd_timeout interval,
2019 possibly several minutes, before reporting an error.
2020 Instead return an error as soon as the status is known.
2022 Frequency : quota enabled and large files being deleted
2024 Description: releasing more than 4GB of quota at once hangs OST
2025 Details : If a user deletes more than 4GB of files on a single OST it
2026 will cause the OST to spin in an infinite loop. Release
2027 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
2032 Description: statfs data retrieved from /proc may be stale or zero
2033 Details : When reading per-device statfs data from /proc, in the
2034 {kbytes,files}_{total,free,avail} files, it may appear
2035 as zero or be out of date.
2038 Frequency : systems with MD RAID1 external journal devices
2040 Description: lconf's call to blkid is confused by RAID1 journal devices
2041 Details : Use the "blkid -l" flag to locate the MD RAID device instead
2042 of returning all block devices that match the journal UUID.
2045 Frequency : always, for aggregate stripe size over 4GB
2047 Description: assertion fails when trying to use 4GB stripe size
2048 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
2049 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
2052 Frequency : always on ppc64
2054 Description: the first write on an ext3 filesystem with mballoc got stuck
2055 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
2056 perform endianness conversion.
2058 ------------------------------------------------------------------------------
2060 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
2062 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
2063 INTEROPERATE with older versions automatically. Please read the
2064 user documentation before upgrading any part of a live system.
2065 * WARNING: Lustre networking configuration changes are required with
2066 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
2069 * Support for kernels:
2070 2.6.9-22.0.2.EL (RHEL 4)
2071 2.6.5-7.244 (SLES 9)
2072 2.6.12.6 vanilla (kernel.org)
2075 Severity : enhancement
2076 Bugzilla : 7981/8208
2077 Description: Introduced Lustre Networking (LNET)
2078 Details : LNET is new networking infrastructure for Lustre, it includes
2079 a reorganized network configuration mode (see the user
2080 documentation for full details) as well as support for routing
2081 between different network fabrics. Lustre Networking Devices
2082 (LNDs) for the supported network fabrics have also been
2083 created for this new infrastructure.
2085 Severity : enhancement
2086 Description: Introduced Access control lists
2087 Details : clients can set ACLs on files and directories in order to have
2088 more fine-grained permissions than the standard Unix UGO+RWX.
2089 The MDS must be started with the "-o acl" mount option.
2091 Severity : enhancement
2092 Description: Introduced filesystem quotas
2093 Details : Administrators may now establish per-user quotas on the
2096 Severity : enhancement
2098 Description: Configuration change for the XT3
2099 The PTLLND is now used to run Lustre over Portals on the XT3
2100 The configure option(s) --with-cray-portals are no longer used.
2101 Rather --with-portals=<path-to-portals-includes> is used to
2102 enable building on the XT3. In addition to enable XT3 specific
2103 features the option --enable-cray-xt3 must be used.
2108 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
2109 Details : A race between allocating a new llcd and re-getting the llcd_lock
2110 allowed another thread to grab newly-allocated llcd.
2112 Severity : enhancement
2114 Description: 2.6 OST async journal commit and locking fix to improve performance
2115 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
2116 2.6 kernels are now async as they already were in 2.4 kernels so
2117 that they can commit concurrently with the network bulk transfer.
2118 For block-allocated files the filter allocation semaphore is held
2119 to avoid filesystem fragmentation during allocation. BKL lock
2120 removed for 2.6 xattr operations where it is no longer needed.
2125 Description: lconf incorrectly determined whether two IP networks could talk
2126 Details : In some more complicated routing and multiple-network
2127 configurations, lconf will avoid trying to make a network
2128 connection to a disjoint part of the IP space. It was doing the
2129 math incorrectly for one set of cases.
2134 Description: Fix for potential infinite loop processing records in an llog.
2135 Details : If an llog record is corrupted/zeroed, it is possible to loop
2136 forever in llog_process(). Validate the llog record length
2137 and skip the remainder of the block on error.
2140 Frequency : occasional (liblustre only)
2142 Description: liblustre could not open files whose last component is a symlink
2143 Details : sysio_path_walk() would incorrectly pass the open intent to
2144 intermediate path components.
2147 Frequency : rare (liblustre only with non-standard tuning)
2148 Bugzilla : 7201 (7350)
2149 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
2150 Details : llu_lookup_finish_locks() tries to set lock data on a lock
2151 after it has been released, only do this for referenced locks
2153 Severity : enhancement
2155 Description: specifying an (invalid) directory default stripe_size of -1
2156 would reset the directory default striping
2157 Details : stripe_size -1 was used internally to signal directory stripe
2158 removal, now use "all default" to signal dir stripe removal
2159 as a directory striping of "all default" is not useful
2162 Frequency : common for large clusters running liblustre clients
2164 Description: doing an ls when liblustre clients are running is slow
2165 Details : sending a glimpse AST to a liblustre client waits for every AST
2166 to time out, as liblustre clients will not respond. Since they
2167 cannot cache data we refresh the OST lock LVB from disk instead.
2169 Severity : enhancement
2171 Description: doing an ls at the same time as file IO can be slow
2172 Details : enqueue and other "small" requests can be blocked behind many
2173 large IO requests. Create a new OST IO portal for non-IO
2174 requests so they can be processed faster.
2177 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
2179 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
2180 created file with mode 000
2181 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
2182 allow an ftruncate() as a non-root user to a file with mode 000.
2183 Lustre now respects this flag to disable mode checks when
2184 truncating a file owned by the user
2187 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
2190 Description: Revoking locks from clients that went dead or catatonic might take
2192 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
2193 cancellation of such locks instant on servers without waiting for
2194 any reply from clients. Clients drops these locks when cancel
2195 notification from server is received without replying.
2198 Frequency : liblustre-only, when liblustre client dies or becomes busy
2200 Description: Doing ls on Linux clients can take a long time with active
2202 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
2203 granting such locks to it in the first place if possible. Locks
2204 are taken by proxy on the OST during the read or write and
2205 dropped immediately afterward. Add connect flags handling, do
2206 not grant locks to liblustre clients for glimpse ASTs.
2208 Severity : enhancement
2210 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
2211 Details : Existing read-ahead algorithm is tuned for the case of streamlined
2212 sequential reads and behaves badly with applications doing random
2213 reads. Improve it by reading ahead at least read region, and
2214 avoiding excessive large RPC for small reads.
2216 Severity : enhancement
2218 Description: Creating more than 1000 files for a single job may cause a load
2219 imbalance on the OSTs if there are also a large number of OSTs.
2220 Details : qos_prep_create() uses an OST index reseed value that is an
2221 even multiple of the number of available OSTs so that if the
2222 reseed happens in the middle of the object allocation it will
2223 still utilize the OSTs as uniformly as possible.
2228 Description: OST or MDS may oops in ping_evictor_main()
2229 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
2230 but doesn't restart at beginning of obd_exports_timed list
2233 Severity : enhancement
2235 Description: improve by-nid export eviction on the MDS and OST
2236 Details : allow multiple exports with the same NID to be evicted at one
2237 time without re-searching the exports list.
2240 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
2242 Description: MDS may oops in groups_free()
2243 Details : in rare race conditions a newly allocated group_info struct is
2244 freed again, and this can be NULL. The 2.4 compatibility code
2245 for groups_free() checked for a NULL pointer, but 2.6 did not.
2248 Frequency : common for liblustre clients doing little filesystem IO
2249 Bugzilla : 9352, 7313
2250 Description: server may evict liblustre clients accessing contended locks
2251 Details : if a client is granted a lock or receives a completion AST
2252 with a blocking AST already set it would not reply to the AST
2253 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
2256 Frequency : lfs setstripe, only systems with more than 160 OSTs
2258 Description: unable to set striping with a starting offset beyond OST 160
2259 Details : llapi_create_file() incorrectly limited the starting stripe
2260 index to the maximum single-file stripe count.
2263 Frequency : LDAP users only
2265 Description: lconf did not handle in-kernel recovery with LDAP properly
2266 Details : lconf/LustreDB get_refs() is searching the wrong namespace
2268 Severity : enhancement
2270 Description: bind OST threads to NUMA nodes to improve performance
2271 Details : all OST threads are uniformly bound to CPUs on a single NUMA
2272 node and do their allocations there to localize memory access
2274 Severity : enhancement
2276 Description: llmount can determine client NID directly from Myrinet (GM)
2277 Details : the client NID code from gmnalnid was moved directly into
2278 llmount, removing the need to use this or specifying the
2279 client NID explicitly when mounting GM clients with zeroconf
2282 Frequency : if client is started with down MDS
2284 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
2285 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
2286 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
2287 ptlrpc_import_delayed_req() because we didn't check if the
2288 request was interrupted, and we also didn't break out of the
2289 event loop if there was no timeout
2294 Description: data loss during non-page-aligned writes to a single file from
2295 both multiple nodes and multiple threads on one node at same time
2296 Details : updates to KMS and lsm weren't protected by common lock. Resulting
2297 inconsistency led to false short-reads, that were cached and later
2298 used by ->prepare_write() to fill in partially written page,
2299 leading to data loss.
2302 Frequency : always, if lconf --abort_recovery used
2304 Description: lconf --abort_recovery fails with 'Operation not supported'
2305 Details : lconf was attempting to abort recovery on the MDT device and not
2308 Severity : enhancement
2310 Description: remove cleanup logs
2311 Details : replace lconf-generated cleanup logs with lustre internal
2312 cleanup routines. Eliminates the need for client-cleanup and
2315 Severity : enhancement
2317 Description: add support for EAs (user and system) on lustre filesystems
2318 Details : it is now possible to store extended attributes in the Lustre
2319 client filesystem, and with the user_xattr mount option it
2320 is possible to allow users to store EAs on their files also
2322 Severity : enhancement
2324 Description: Add possibility (config option) to show minimal available OST free
2326 Details : When compiled with --enable-mindf configure option, statfs(2)
2327 (and so, df) will return least minimal free space available from
2328 all OSTs as amount of free space on FS, instead of summary of
2329 free spaces of all OSTs.
2331 Severity : enhancement
2333 Description: do not expand extent locks acquired on OST-side
2334 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
2335 by server: they are not cached anyway.
2338 Frequency : when mmap is used/binaries executed from Lustre
2340 Description: Unmmap pages before throwing them away from read cache.
2341 Details : llap_shrink cache now attempts to unmap pages before discarding
2342 them (if unmapping failed - do not discard). SLES9 kernel has
2343 extra checks that trigger if this unmapping is not done first.
2348 Description: lconf didn't resolve symlinks before checking to see whether a
2349 given mountpoint was already in use
2352 Frequency : when migrating failover services
2353 Bugzilla : 6395, 9514
2354 Description: When migrating a subset of services from a node (e.g. failback
2355 from a failover service node) the remaining services would
2356 time out and evict clients.
2357 Details : lconf --force (implied by --failover) sets the global obd_timeout
2358 to 5 seconds in order to quickly disconnect, but this caused
2359 other RPCs to time out too quickly. Do not change the global
2360 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
2362 Severity : enhancement
2363 Frequency : if MDS is started with down OST
2364 Bugzilla : 9439,5706
2365 Description: Allow startup/shutdown of an MDS without depending on the
2366 availability of the OSTs.
2367 Details : Asynchronously call mds_lov_synchronize during MDS startup.
2368 Add appropriate locking and lov-osc refcounts for safe
2369 cleaning. Add osc abort_inflight calls in case the
2370 synchronize never started.
2373 Frequency : occasional (Cray XT3 only)
2375 Description: root not authorized to access files in CRAY_PORTALS environment
2376 Details : The client process capabilities were not honoured on the MDS in
2377 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
2378 been accessed by an authorized user then root was able to access
2379 the file on the local client also. The root user capabilities
2380 are now allowed on the MDS, as this environment has secure UID.
2383 Frequency : occasional
2385 Description: ldiskfs "too long searching" message happens too often
2386 Details : A debugging message (otherwise harmless) prints too often on
2387 the OST console. This has been reduced to only happen when
2388 there are fragmentation problems on the filesystem.
2393 Description: Division by zero in statfs when all OSCs are inactive
2394 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
2395 lov_statfs divides by value returned by lov_get_stripecnt().
2399 Bugzilla : 9489, 3273
2400 Description: First write from each client to each OST was only 4kB in size,
2401 to initialize client writeback cache, which caused sub-optimal
2402 RPCs and poor layout on disk for the first writen file.
2403 Details : Clients now request an initial cache grant at (re)connect time
2404 and so that they can start streaming writes to the cache right
2405 away and always do full-sized RPCs if there is enough data.
2406 If the OST is rebooted the client also re-establishes its grant
2407 so that client cached writes will be honoured under the grant.
2412 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
2413 Details : Now I/O RPCs go to different portal number and (presumably) fast
2414 lock requests (and glimses) and other RPCs get their own service
2415 threads pool that should be able to service those RPCs
2418 Severity : enhancement
2420 Description: Ability to exchange lustre version between client and servers and
2421 issue warnings at client side if client is too old. Also for
2422 liblustre clients there is ability to refuse connection of too old
2424 Details : New 'version' field is added to connect data structure that is
2425 filled with version info. That info is later checked by server and
2429 Frequency : rare, liblustre only.
2430 Bugzilla : 9296, 9581
2431 Description: Two simultaneous writes from liblustre at offset within same page
2432 might proceed at the same time overwriting eachother with stale
2434 Details : I/O lock withing llu_file_prwv was released too early, before data
2435 actually was hitting the wire. Extended lock-holding time until
2436 server acknowledges receiving data.
2439 Frequency : extremely rare. Never observed in practice.
2441 Description: avoid generating lustre_handle cookie of 0.
2442 Details : class_handle_hash() generates handle cookies by incrementing
2443 global counter, and can hit 0 occasionaly (this is unlikely, but
2444 not impossible, because initial value of cookie counter is
2445 selected randonly). Value of 0 is used as a sentinel meaning
2446 "unassigned handle" --- avoid it. Also coalesce two critical
2447 sections in this function into one.
2449 Severity : enhancement
2451 Description: allow liblustre clients to delegate truncate locking to OST
2452 Details : To avoid overhead of locking, liblustre client instructs OST to
2453 take extent lock in ost_punch() on client's behalf. New connection
2454 flag is added to handle backward compatibility.
2456 Severity : enhancement
2457 Bugzilla : 4928, 7341, 9758
2458 Description: allow number of OST service threads to be specified
2459 Details : a module parameter allows the number of OST service threads
2460 to be specified via "options ost ost_num_threads={N}" in the
2461 OSS's /etc/modules.conf or /etc/modprobe.conf.
2465 Bugzilla : 6146, 9635, 9895
2466 Description: servers crash with bad pointer in target_handle_connect()
2467 Details : In rare cases when a client is reconnecting it was possible that
2468 the connection request was the last reference for that export.
2469 We would temporarily drop the export reference and get a new
2470 one, but this may have been the last reference and the export
2471 was just destroyed. Get new reference before dropping old one.
2473 Severity : enhancement
2474 Frequency : if client is started with failover MDS
2476 Description: Allow multiple MDS hostnames in the mount command
2477 Details : Try to read the configuration from all specified MDS
2478 hostnames during a client mount in case the "primary"
2481 Severity : enhancement
2483 Description: Stop sending data to evicted clients as soon as possible.
2484 Details : Check if the client we are about to send or are sending data to
2485 was evicted already. (Check is done every second of waiting,
2486 for which l_wait_event interface was extended to allow checking
2487 of exit condition at specified intervals).
2490 Frequency : rare, normally only when NFS exporting is done from client
2492 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
2494 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
2497 Frequency : always, if srand() is called before liblustre initialization
2499 Description: Liblustre uses system PRNG disturbing its usage by user application
2500 Details : Introduce internal to lustre fast and high-quality PRNG for
2501 lustre usage and make liblustre and some other places in generic
2502 lustre code to use it.
2504 Severity : enhancement
2505 Bugzilla : 9477, 9557, 9870
2506 Description: Verify that the MDS configuration logs are updated when xml is
2507 Details : Check if the .xml configuration logs are newer than the config
2508 logs stored on the MDS and report an error if this is the case.
2509 Request --write-conf, or allow starting with --old_conf.
2511 Severity : enhancement
2513 Description: Handle symlinks in the path when checking if Lustre is mounted.
2514 Details : Resolve intermediate symlinks when checking if a client has
2515 mounted a filesystem to avoid duplicate client mounts.
2520 Description: lconf can hit an error exception but still return success.
2521 Details : The lconf command catches the Command error exception at the top
2522 level script context and will exit with the associated exit
2523 status, but doesn't ensure that this exit status is non-zero.
2528 Description: failure of ptlrpc thread startup can cause oops
2529 Details : Starting a ptlrpc service thread can fail if there are a large
2530 number of threads or the server memory is very fragmented.
2531 Handle this without oopsing.
2534 Frequency : always, only if liblustre and non-default acceptor port was used
2536 Description: liblustre cannot connect to servers with non-default acceptor port
2537 Details : tcpnal_set_default_params() was not called and was therefore
2538 ignoring the environment varaible TCPNAL_PORT, as well as other
2539 TCPNAL_ environment variables
2544 Description: two objects could be created on the same OST for a single file
2545 Details : If an OST is down, in some cases it was possible to create two
2546 objects on a single OST for a single file. No problems other
2547 than potential performance impact and spurious error messages.
2551 Bugzilla : 5681, 9562
2552 Description: Client may oops in ll_unhash_aliases
2553 Details : Client dcache may become inconsistent in race condition.
2554 In some cases "getcwd" can fail if the current directory is
2560 Description: Inode refcounting problems in NFS export code
2561 Details : link_raw functions used to call d_instantiate without obtaining
2562 extra inode reference first.
2566 Bugzilla : 9942, 9903
2567 Description: Referencing freed requests leading to crash, memleaks with NFS.
2568 Details : We used to require that call to ll_revalidate_it was always
2569 followed by ll_lookup_it. Also with revalidate_special() it is
2570 possible to call ll_revalidate_it() twice for the same dentry
2571 even if first occurence returned success. This fix changes semantic
2572 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
2573 reference on a request referred from the intent.
2574 ll_intent_release() then releases such a request.
2577 Frequency : rare, normally benchmark loads only
2579 Description: unlinked inodes were kept in memory on the client
2580 Details : If a client is repeatedly creating and unlinking files it
2581 can accumulate a lot of stale inodes in the inode slab cache.
2582 If there is no other client load running this can cause the
2583 client node to run out of memory. Instead flush old inodes
2584 from client cache that have the same inode number as a new inode.
2587 Frequency : SLES9 2.6.5 kernel and long filenames only
2588 Bugzilla : 9969, 10379
2589 Description: utime reports stale NFS file handle
2590 Details : SLES9 uses out-of-dentry names in some cases, which confused
2591 the lustre dentry revalidation. Change it to always use the
2595 Frequency : rare, unless heavy write-truncate concurrency is continuous
2596 Bugzilla : 4180, 6984, 7171, 9963, 9331
2597 Description: OST becomes very slow and/or deadlocked during object unlink
2598 Details : filter_destroy() was holding onto the parent directory lock
2599 while truncating+unlinking objects. For very large objects this
2600 may block other threads for a long time and slow overall OST
2601 responsiveness. It may also be possible to get a lock ordering
2602 deadlock in this case, or run out of journal credits because of
2603 the combined truncate+unlink. Solution is to do object truncate
2604 first in one transaction without parent lock, and then do the
2605 final unlink in a new transaction with the parent lock. This
2606 reduces the lock hold time dramatically.
2609 Frequency : rare, 2.4 kernels only
2611 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
2612 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
2613 before unmounting their filesystem in order to avoid deadlock.
2614 The kernel_locked() function in 2.4 kernels only checks whether
2615 the kernel lock is held, not whether it is this process that is
2616 holding it as 2.6 kernels do.
2621 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
2622 Details : The client ptlrpc code may be trying to reconnect to a down
2623 server before a previous connection attempt has timed out.
2624 Increase the reconnect interval to be longer than the connection
2625 timeout interval to avoid sending duplicate connections to
2629 Frequency : echo_client brw_test command
2631 Description: fix echo_client to work with OST preallocated code
2632 Details : OST preallocation code (5137) didn't take echo_client IO path
2633 into account: echo_client calls filter methods outside of any
2634 OST thread and, hence, there is no per-thread preallocated
2635 pages and buffers to use. Solution: hijack pga pages for IO. As
2636 a byproduct, this avoids unnecessary data copying.
2640 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
2641 Description: Client can oops in mdc_commit_close() after open replay
2642 Details : It was possible for the MDS to return an open request with no
2643 transaction number in mds_finish_transno() if the client was
2644 evicted, but without actually returning an error. Clients
2645 would later try to replay that open and may trip an assertion
2646 Simplify the client close codepath, and always return an error
2647 from the MDS in case the open is not successful.
2650 Frequency : rare, 2.6 OSTs only
2652 Description: OST may deadlock under high load on fragmented files
2653 Details : If there was a heavy load and highly-fragmented OST filesystems
2654 it was possible to have all the OST threads deadlock waiting on
2655 allocation of biovecs, because the biovecs were not released
2656 until the entire RPC IO was completed. Instead, release biovecs
2657 as soon as they are complete to ensure forward IO progress.
2659 Severity : enhancement
2661 Description: Support for specifying external journal device at mount
2662 Details : If an OST or MDS device is formatted with an external journal
2663 device, this device major/minor is stored in the ext3 superblock
2664 and may not be valid for failover. Allow detecting and
2665 specifying the external journal at mount time.
2670 Description: Mounting an MDS with pending unlinked files may cause oops
2671 Details : target_finish_recovery() calls mds_postrecov() which returned
2672 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
2673 considers this an error and immediately begins cleaning up the
2674 lov, just after starting the mds_lov process
2676 Severity : enhancement
2678 Description: Implement 'lfs df' to report actual free space on per-OST basis
2679 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
2680 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
2681 usage of objects; '-h' to report in human readable format.
2683 ------------------------------------------------------------------------------
2685 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
2692 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
2693 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
2694 at startup during orphan unlinking. Instead, skip buddy update
2695 before setup, as it will be regenerated after recovery is complete.
2700 Description: If an OST is inactive, its locks might reference stale inodes.
2701 Details : lov_change_cbdata() must iterate over all namespaces, even if
2702 they are inactive to clear inode references from the lock.
2704 Severity : enhancement
2705 Frequency : occasional, if non-standard max_dirty_mb used
2707 Description: Client will block write RPCs if not enough grant
2708 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
2709 then the client will block writes while waiting for another RPC
2710 to complete instead of consuming its dirty limit. With change
2711 we get improved performance when max_dirty_mb is small.
2713 Severity : enhancement
2714 Bugzilla : 3389, 6253
2715 Description: Add support for supplementary groups on the MDS.
2716 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
2717 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
2718 lookups for user supplementary groups into a cache.
2722 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
2723 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
2724 for liblustre O_EXCL is enforced by MDS.
2728 Description: readdir never returns NULL in liblustre.
2729 Details : Corrected llu_iop_getdirentries logic, to return offset of next
2730 dentry in struct dirent.
2734 Frequency : liblustre only, depends on application IO pattern
2735 Description: liblustre clients evicted if not contacting servers
2736 Details : Don't put liblustre clients into the ping_evictor list, so
2737 they will not be evicted by the pinger ever.
2739 Severity : enhancement
2741 Description: Add ability to evict clients by NID from MDS.
2742 Details : By echoing "nid:$NID" string into
2743 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
2744 $NID would be instantly evicted from this MDS and from all active
2745 OSTs connected to it.
2749 Description: Do not query file size twice, somewhat slowing stat(2) calls.
2750 Details : lookup_it_finish() used to query file size from OSTs that was not
2755 Description: service threads change working directory to that of init
2756 Details : Starting lustre service threads may pin the working directory
2757 of the parent thread, making that filesystem busy. Threads
2758 now change to the working directory of init to avoid this.
2762 Frequency : during shutdown only
2763 Description: shutdown with a failed MDS or OST can cause unmount to hang
2764 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
2769 Frequency : 2.6 only
2770 Description: chmod/chown may include an extra supplementary group
2771 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
2772 supplementary group and if none is specified this is used.
2775 Bugzilla : 5479 (6816)
2777 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
2778 Details : If lookup is in progress on a file that is unlinked we might try
2779 to revalidate the inode and fail in revalidate after lookup is
2780 complete and ll_file_open() enqueues the open again but
2781 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
2784 Frequency : always, if lconf --abort_recovery used
2786 Description: lconf --abort_recovery fails with 'Operation not supported'
2787 Details : lconf was attempting to abort recovery on the MDT device and not
2790 ------------------------------------------------------------------------------
2792 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
2797 Frequency : rare (only unsupported configurations with a node running as an
2799 Bugzilla : 6514, 5137
2800 Description: Mounting a Lustre file system on a node running as an OST could
2802 Details : OSTs now preallocates memory needed to write out data at
2803 startup, instead of when needed, to avoid having to
2804 allocate memory in possibly low memory situations.
2805 Specifically, if the file system is mounted on on OST,
2806 memory pressure could force it to try to write out data,
2807 which it needed to allocate memory to do. Due to the low
2808 memory, it would be unable to do so and the node would
2809 become unresponsive.
2811 Severity : enhancement
2813 Description: Addition of lconf --service command line option
2814 Details : lconf now accepts a '--service <arg>' option, which is
2815 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
2817 Severity : enhancement
2819 Description: Failover mode is now the default for OSTs.
2820 Details : By default, OSTs will now run in failover mode. To return to
2821 the old behaviour, add '--failout' to the lmc line for OSTs.
2823 Severity : enhancement
2825 Description: Health checks are now provided for MDS and OSTs
2826 Details : Additional detailed health check information on MSD and OSTs
2827 is now provided through the procfs health_check value.
2830 Frequency : occasional, depends on IO load
2832 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
2833 after numerous create/delete cycles
2834 Details : The ext3 inode allocation policy would not allocate new inodes
2835 very well on the OSTs because there are no new directories
2836 being created. Instead we look for groups with free space if
2837 the parent directories are nearly full.
2842 Description: Network or server problems during mount may cause partially
2843 mounted clients instead of returning an error.
2844 Details : The config llog parsing code may overwrite the error return
2845 code during mount error handling, returning success instead
2851 Description: MDS can fail to allocate large reply buffers
2852 Details : After long uptimes the MDS can fail to allocate large reply
2853 buffers (e.g. zconf client mount config records) due to memory
2854 fragmentation or consumption by the buffer cache. Preallocate
2855 some large reply buffers so that these replies can be sent even
2856 under memory pressure.
2860 Frequency : rare (liblustre)
2861 Description: fsx running with liblustre complained that using truncate() to
2862 extend the file doesn't work. This patch corrects that issue.
2863 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
2864 ATTR_SIZE and lsm use in llu_setattr_raw.
2868 Frequency : rare, only 2.6 kernels
2869 Description: Unusual file access patterns on the MDS may result in inode
2870 data being lost in very rare circumstances.
2871 Details : Bad interaction between the ea-in-inode patch and the "no-read"
2872 code in the 2.6 kernel caused the inode and/or EA data not to
2873 be read from disk, causing single-file corruption.
2877 Frequency : rare, only 2.6 filesystems using extents
2878 Description: Heavy concurrent write and delete load may cause data corruption.
2879 Details : It was possible under high-load situations to have an extent
2880 metadata block in the block device cache from a just-unlinked
2881 file overwrite a newly-allocated data block. We now unmap any
2882 metadata buffers that alias just-allocated data blocks.
2886 Frequency : filesystems with default stripe_count larger than 77
2887 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
2888 Details : lconf specifies an inode size of 4096 bytes when the default
2889 stripe_count is larger than 77. This conflicts with the default
2890 inode density of 1 per 4096 bytes. Allocate smaller inodes in
2891 this case to avoid pinning too much memory for large EAs.
2893 ------------------------------------------------------------------------------
2895 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
2900 Frequency : rare (extremely heavy IO load with hundreds of clients)
2902 Description: Client is evicted, gets IO error writing to file
2903 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
2904 caused clients to be evicted for AST timeouts. The fixes in
2905 bug 5192 mean we no longer need to have such short AST timeouts
2906 so ldlm_timeout has been increased.
2909 Frequency : occasional during --force or --failover shutdown under load
2910 Bugzilla : 5949, 4834
2911 Description: Server oops/LBUG if stopped with --force or --failover under load
2912 Details : a collection of import/export refcount and cleanup ordering
2913 issues fixed for safer force cleanup
2916 Frequency : only filesystems larger than 120 OSTs
2917 Bugzilla : 5990, 6223
2918 Description: lfs getstripe would oops on a very large filesystem
2919 Details : lov_getconfig used kfree on vmalloc'd memory
2922 Frequency : only filesystems exporting via NFS to Solaris 10 clients
2923 Bugzilla : 6242, 6243
2924 Description: reading from files that had been truncated to a non-zero size
2925 but never opened returned no data
2926 Details : ll_file_read() reads zeros from no-object files to EOF
2931 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
2932 Details : There's little harm in aborting MDS/OSS recovery and letting it
2933 try again, so I removed the LASSERT and return an error instead.
2935 Severity : enhancement
2937 Description: New debugging infrastructure for tracking down data corruption
2938 Details : The I/O checksum code was replaced to: (a) control it at runtime,
2939 (b) cover more of the client-side code path, and (c) try to narrow
2940 down where problems occurred
2944 Bugzilla : 3819, 4364, 4397, 6313
2945 Description: Racing close and eviction MDS could cause assertion in mds_close
2946 Details : It was possible to get multiple mfd references during close and
2947 client eviction, leading to one thread referencing a freed mfd.
2949 Severity: : enhancement
2950 Bugzilla : 3262, 6359
2951 Description: Attempts to reconnect to servers are now more aggressive.
2952 Details : This builds on the enhanced upcall-less recovery that was added
2953 in 1.4.2. When trying to reconnect to servers, clients will
2954 now try each server in the failover group every 10 seconds. By
2955 default, clients would previously try one server every 25 seconds.
2960 Description: After recovery, certain operations trigger a failed
2961 assertion on a client.
2962 Details : Failing over an mds, using lconf -d --failover, while a
2963 client was doing a readdir() call would cause the client to
2964 LBUG after recovery completed and the readdir() was resent.
2966 Severity : enhancement
2968 Description: Default groups are now added by lconf
2969 Details : You can now run lconf --group <servicename> without having to
2970 manually add groups with lmc.
2973 Frequency : occasional
2975 Description: Nodes with an elan id of 0 trigger a failed assertion
2978 Frequency : always when accessing e.g. tty/console device nodes
2980 Description: tty and some other devices nodes cannot be used on lustre
2981 Details : file's private_data field is used by device data and lustre
2982 values in there got lost. New field was added to struct file to
2983 store fs-specific private data.
2986 Frequency : when exporting Lustre via NFS
2988 Description: NFSD failed occasionally when looking up a path component
2989 Details : NFSD is looking up ".." which was broken in ext3 directories
2990 that had grown large enough to become hashed.
2993 Frequency : Clusters with multiple interfaces not on the same subnet
2995 Description: Nodes will repeatedly try to reconnect to an interface which it
2996 cannot reach and report an error to the log.
2997 Details : Extra peer list entries will be created by lconf with some peers
2998 unreachable. lconf now validates the peer before adding it.
3001 Frequency : Only if a default stripe is set on the filesystem root.
3003 Description: Setting a default stripe on the filesystem root prevented the
3004 filesystem from being remounted.
3005 Details : The client was sending extra request flags in the root getattr
3006 request and did not allocate a reply buffer for the dir EA.
3009 Frequency : occasional, higher if lots of files are accessed by one client
3010 Bugzilla : 6159, 6097
3011 Description: Client trips assertion regarding lsm mismatch/magic
3012 Details : While revalidating inodes the VFS looks up inodes with ifind()
3013 and in rare cases can find an inode that is being freed.
3014 The ll_test_inode() code will free the lsm during ifind()
3015 when it finds an existing inode and then the VFS later attaches
3016 this free lsm to a new inode.
3020 Bugzilla : 6422, 7030
3021 Description: MDS deadlock between mkdir and client eviction
3022 Details : Creating a new file via mkdir or mknod (starting a transaction
3023 and getting the ns lock) can deadlock with client eviction
3024 (gets ns lock and trying to finish a synchronous transaction).
3027 Frequency : occasional
3028 Description: While starting a server, the fsfilt_ext3 module could not be
3030 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
3031 kernels. Previously, lconf would still use the ext3 name
3032 when trying to load modules. Now, it will correctly use
3033 ext3 on 2.4 and ldiskfs on 2.6.
3035 Severity : enhancement
3036 Description: The default stripe count has been changed to 1
3037 Details : The interpretation of the default stripe count (0, to lfs
3038 or lmc) has been changed to mean striping across a single
3039 OST, rather than all available. For general usage we have
3040 found a stripe count of 1 or 2 works best.
3042 Severity : enhancement
3043 Description: Add support for compiling against Cray portals.
3044 Details : Conditional compiling for some areas that are different
3048 Frequency : occasional
3049 Bugzilla : 6409, 6834
3050 Description: Creating files with an explicit stripe count may lead to
3051 a failed assertion on the MDS
3052 Details : If some OSTs are full or unavailable, creating files may
3053 trigger a failed assertion on the MDS. Now, Lustre will
3054 try to use other servers or return an error to the
3058 Frequency : occasional
3060 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
3061 caused lock timeout during readahead (since 1.4.2).
3062 Details : Processes doing readahead might match a lock that hasn't been
3063 granted yet if there are overlapping and conflicting lock
3064 requests. The readahead process waits on ungranted lock
3065 (original lock is CBPENDING), while OST waits for that process
3066 to cancel CBPENDING read lock and eventually evicts client.
3068 Severity : enhancement
3070 Description: Initial enabling of flock support for clients
3071 Details : Implements fcntl advisory locking and file status functions.
3072 This feature is provided as an optional mount flag (default
3073 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
3074 locking are implemented yet, and those that are are not guaranteed
3075 to be completely correct in production environments.
3076 mount -t lustre -o [flock|noflock] ...
3079 Frequency : occasional
3081 Description: OSTs running 2.4 kernels but with extents enabled might trip an
3082 assertion in the ext3 JBD (journaling) layer.
3083 Details : The b_committed_data struct is protected by the big kernel lock
3084 in 2.4 kernels, serializing journal_commit_transaction() and
3085 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
3086 access to this struct. In 2.6 kernels there is finer grained
3087 locking to improve SMP performance of the JBD layer.
3091 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
3096 Description: merge and cleanup kernel patches.
3099 -----------------------------------------------------------------------------
3101 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
3103 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
3104 versions of Lustre. Please update all servers and clients to
3105 version 1.4.2 or later at the same time. You must also run
3106 "lconf --write-conf {config}.xml" on the MDS while it is stopped
3107 to update the configuration logs.
3109 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
3110 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
3111 - swab llog records of type '0' so we get proper header size/idx (5861)
3112 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
3113 - fix rename of one directory over another leaking an inode (5953)
3114 - avoid SetPageDirty on 2.6 (5981)
3115 - don't re-add just-being-destroyed locks to the waiting list (5653)
3116 - when creating new directories, inherit the parent's custom
3117 striping settings if present parent (3048)
3118 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
3119 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
3120 - don't hold client locks on temporary worklist from l_lru (5666)
3121 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
3122 - automatically evict dead clients (5921)
3123 - Update file size properly in create+truncate+fstat case (6196)
3124 - Do not unhash mountpoint dentries, do not allow removal of
3126 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
3127 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
3128 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
3129 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
3130 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
3131 - Correctly handle reads of files with no objects (6243)
3132 - lctl recover will also mark a device active if deactivate used (5933)
3134 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
3135 - allow --write-conf on an MDS with different nettype than client (5619)
3136 - don't write config llogs to MDS for mounts not from that MDS (5617)
3137 - lconf should create multiple TCP connections from a client (5201)
3138 - init scripts are now turned off by default; run chkconfig --on
3139 lustre and chkconfig --on lustrefs to use them
3140 - upcalls are no longer needed for clients to recover to failover
3142 - add --abort-recovery option to lconf to abort recovery on device
3144 - add support for an arbitrary number of OSTs (3026)
3145 - Quota support protocol changes.
3146 - forward compatibility changes to wire structs (6007)
3147 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
3148 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
3149 - improved "lustre status" script
3150 - initialize blocksize for non-regular files (6062)
3151 - added --disable-server and --disable-client configure options (5782)
3152 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
3153 - Vanilla 2.4.29 support
3154 - increase maximum number of obd devices to 520 (6242)
3155 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
3156 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
3157 SLES 9 2.6.5 kernels
3158 - limit stripes per file to 160 (the maximum EA size) (6093)
3160 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3163 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
3164 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
3165 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
3166 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
3167 - small ext3 extents cleanups and fixes (5733)
3168 - improved mballoc code, several small races and bugs fixed (5733, 5638)
3169 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
3170 - avoid needless client->OST connect, fix handle mismatch (5317)
3171 - fix DLM error path that led to out-of-sync client, long delays (5779)
3172 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
3173 - fix several locking issues related to i_size (5492,5624,5654,5672)
3174 - don't move pending lock onto export if it is already evicted (5683)
3175 - fix kernel oops when creating .foo in unlinked directory (5548)
3176 - fix deadlock in obdfilter statistics vs. object create (5811)
3177 - use time_{before,after} to avoid timer jiffies wrap (5882)
3178 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
3179 - Do not leak request if server was not able to process it (5154)
3180 - If mds_open unable to find parent dir, make that negative lookup(5154)
3181 - don't create new directories with extent-mapping (5909, 5936)
3183 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
3184 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
3185 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
3186 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
3187 - support for RHEL4 kernel on i686 (5773)
3188 - provide error messages when incompatible logs are encountered (5898)
3190 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
3191 * version 1.4.0.10 (1.4.1 release candidate 1)
3193 - don't keep a lock reference when lock is not granted (4238)
3194 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3195 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
3196 - drop import inflight refcount on signal_completed_replay error (5255)
3197 - unlock page after async write error during send (3677)
3198 - handle missing objects in filter_preprw_read properly (5265)
3199 - no transno return for symlink open, don't save no-trasno open (3440)
3200 - don't try to complete elan receive that already failed (4012)
3201 - free RPC server reply state on error (5406)
3202 - clean up thread from ptlrpc_start_thread() on error (5160)
3203 - readahead could read extra page into cache that wasn't ejected (5388)
3204 - prevent races in class_attach/setup/cleanup/detach (5260)
3205 - don't dereference de->d_inode after l_dput of de (5458)
3206 - use "int" for stripe value returned from lock_to_stripe (5544)
3207 - mballoc allocation and error-checking fixes in 2.6 (5504)
3208 - block device patches to fix I/O request sizes in 2.6 (5482)
3209 - look up hostnames for IB nals (5602)
3210 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
3211 - don't start multiple acceptors for the same port (5277)
3212 - fix incorrect LASSERT in mds_getattr_name (5635)
3213 - export a proc file for general "ping" checking (5628)
3214 - fix "lfs check" to not block when the MDS is down (5628)
3216 - service request history (4965)
3217 - put {ll,lov,osc}_async_page structs in a single slab (4699)
3218 - create an "evict_client" /proc entry on OSTs, like the MDS has
3219 - fix mount usage message, return errors per mount(8) (5168)
3220 - change grep [] to grep "[]" in tests so they work in more UMLs
3221 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
3222 - remove ancient LOV_MAGIC_V0 EA support (5047)
3223 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
3224 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
3225 - allow readahead allocations to fail when low on memory (5383)
3226 - mmap locking landed again, after considerable improvement (2828)
3227 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
3229 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
3232 - send OST transaction number in read/write reply to free req (4966)
3233 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3234 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3235 - the watchdog thread now runs as interruptible (5246)
3236 - flock/lockf fixes (but it's still disabled, pending 5135)
3237 - don't use EXT3 constants in llite code (5094)
3238 - memory shortage at startup could cause assertion (5176)
3240 - reorganization of lov code
3241 - single portals codebase
3243 - add extents/mballoc support (5025)
3244 - direct I/O reads in the obdfilter (4048)
3245 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
3247 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3250 - send OST transaction number in read/write reply to free req (4966)
3251 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3252 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3253 - the watchdog thread now runs as interruptible (5246)
3254 - handle missing objects in filter_preprw_read properly (5265)
3255 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3256 - drop import inflight refcount on signal_completed_replay error (5255)
3257 - unlock page after async write error during send (3677)
3258 - return original error code on reconstructed replies (3761)
3259 - no transno return for symlink open, don't save no-trasno open (3440)
3261 - add pid to ldlm debugging output (4922)
3262 - bump the watchdog timeouts -- we can't handle 30sec yet
3263 - extra debugging for orphan dentry/inode bug (5259)
3265 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
3268 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
3269 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
3270 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
3271 - fix NULL dereference in /proc/sys/portals/routes (4827)
3272 - allow failed mdc_close() operations to be interrupted (4561)
3273 - stop precreate on OST before MDS would time out on it (4778)
3274 - don't send partial-page writes before EOF from client (4410)
3275 - discard client grant for sub-page writes on large-page clients (4520)
3276 - don't free dentries not owned by NFS code, check generation (4806)
3277 - fix lsm leak if mds_create_objects() fails (4801)
3278 - limit debug_daemon file size, always print CERROR messages (4789)
3279 - use transno after validating reply (3892)
3280 - process timed out requests if import state changes (3754)
3281 - update mtime on OST during writes, return in glimpse (4829)
3282 - add mkfsoptions to LDAP (4679)
3283 - use ->max_readahead method instead of zapping global ra (5039)
3284 - don't interrupt __l_wait_event() during strace
3286 - add software watchdogs to catch hung threads quickly (4941)
3287 - make lustrefs init script start after nfs is mounted
3288 - fix CWARN/ERROR duplication (4930)
3289 - return async write errors to application if possible (2248)
3290 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
3291 - print NAL number in %x format (4645)
3292 - update barely-supported suse-2.4.21-171 series (4842)
3293 - support for sles 9 %post scripts
3294 - support for building 2.6 kernel-source packages
3295 - support for sles km_* packages
3297 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
3300 - ignore -ENOENT errors in osc_destroy (3639)
3301 - notify osc create thread that OSC is being cleaned up (4600)
3302 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
3303 - reconstruct ost_handle() like mds_handle() (4657)
3304 - create a new thread to do import eviction to avoid deadlock (3969)
3305 - let lconf resolve symlinked-to devices (4629)
3306 - don't unlink "objects" from directory with default EA (4554)
3307 - hold socknal file ref over connect in case target is down (4394)
3308 - allow more than 32000 subdirectories in a single directory (3244)
3309 - fix blocks count for O_DIRECT writes (3751)
3310 - OST returns ENOSPC from object create when no space left (4539)
3311 - don't send truncate RPC if file size isn't changing (4410)
3312 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
3313 - bind to privileged port in socknal and tcpnal (3689)
3315 - rate limit CERROR/CWARN console message to avoid overload (4519)
3316 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
3317 - basic mmap support (3918)
3318 - kernel patch series update from b1_4 (4711)
3320 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
3323 - avoid crash during MDS cleanup with OST shut down (2775)
3324 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
3325 - don't use bad inodes on the MDS (3744)
3326 - dynamic object preallocation to improve recovery speed (4236)
3327 - don't hold spinlock over lock dumping or change debug flags (4401)
3328 - don't zero obd_dev when it is force cleaned (3651)
3329 - print grants to console if they go negative (4431)
3330 - "lctl deactivate" will stop automatic recovery attempts (3406)
3331 - look for existing locks in ldlm_handle_enqueue() (3764)
3332 - don't resolve lock handle twice in recovery avoiding race (4401)
3333 - revalidate should check working dir is a directory (4134)
3335 - don't always mark "slow" obdfilter messages as errors (4418)
3337 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
3340 - don't close LustreDB during write_conf until it is done (3860)
3341 - fix typo in lconf for_each_profile (3821)
3342 - allow dumping logs from multiple threads at one time (3820)
3343 - don't allow multiple threads in OSC recovery (3812)
3344 - fix debug_size parameters (3864)
3345 - fix mds_postrecov to initialize import for llog ctxt (3121)
3346 - replace config semaphore with spinlock (3306)
3347 - be sure to send a reply for a CANCEL rpc with bad export (3863)
3348 - don't allow enqueue to complete on a destroyed export (3822)
3349 - down write_lock before checking llog header bitmap (3825)
3350 - recover from lock replay timeout (3764)
3351 - up llog sem before sending rpc (3652)
3352 - reduce ns lock hold times when setting kms (3267)
3353 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
3354 - fix NULL deref and obd_dev leak on setup error (3312)
3355 - replace some LBUG about llog ops with error handling (3841)
3356 - don't match INVALID dentries from d_lookup and spin (3784)
3357 - hold dcache_lock while marking dentries INVALID and hashing (4255)
3358 - fix invalid assertion in ptlrpc_set_wait (3880)
3360 - add libwrap support for the TCP acceptor (3996)
3361 - add /proc/sys/portals/routes for non-root route listing (3994)
3362 - allow setting MDS UUID in .xml (2580)
3363 - print the stack of a process that LBUGs (4228)
3365 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
3368 - don't cleanup request in ll_file_open() on failed MDS open (3430)
3369 - make sure to unset replay flag from failed open requests (3440)
3370 - if default stripe count is 0, use OST count for inode size (3636)
3371 - update parent mtime/ctime on client for create/unlink (2611)
3372 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
3373 - free recovery state on server during a forced cleanup (3571)
3374 - unregister_reply for resent reqs (3063)
3375 - loop back devices mounting and status check on 2.6 (3563)
3376 - fix resource-creation race that can provoke i_size == 0 (3513)
3377 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
3378 - more debugging for page-accounting assertion (3746)
3379 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
3380 - avoid deadlock after precreation failure (3758)
3381 - fix race and lock order deadlock in orphan handling (3450, 3750)
3382 - add validity checks when grabbing inodes from l_ast_data (3599)
3384 - add /proc/.../recovery_status to obdfilter (3428)
3385 - lightweight CDEBUG infrastructure, debug daemon (3668)
3386 - change default OSC RPC parameters to be better on small clusters
3387 - turn off OST read cache for files smaller than 32MB
3388 - install man pages and include them in rpms (3100)
3389 - add new init script for (un)mounting lustre filesystems (2593)
3390 - run chkconfig in %post for init scripts (3701)
3391 - drop scimac NAL (unmaintained)
3393 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
3396 - clean kiobufs before and after use (3485)
3397 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
3398 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
3399 - change init script to fail more clearly if not run as root (1528)
3400 - allow clients to reconnect during replay (1742)
3401 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
3402 - don't do DNS lookups on NIDs too small for IP addresses (3442)
3403 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
3404 - fix cond_resched (3554)
3405 - only evict unfinished clients after recovery (3515)
3406 - allow bulk resend, prevent data loss (3570)
3407 - dynamic ptlrpc request buffer allocation (2102)
3408 - don't allow unlinking open directory if it isn't empty (2904)
3409 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
3410 - remove extraneous obd dereference causing LASSERT failure (3334)
3411 - don't use get_cycles() when creating temp. files on the mds (3156)
3412 - hold i_sem when setting i_size in ll_extent_lock() (3564)
3413 - handle EEXIST for set-stripe, set proper directory name (3336)
3415 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
3416 - fix ksocknal_fmb_callback() error messages (2918)
3418 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
3421 - don't copy lvb into (possibly NULL) reply on error (2983)
3422 - don't deref dentry after dput, don't free lvb on error (2922)
3423 - use the kms to determine writeback rpc length (2947)
3424 - increment oti_logcookies when osc is inactive (2948)
3425 - update client's i_blocks count via lvb messages (2543)
3426 - handle intent open/close of special files properly (1557)
3427 - mount MDS with errors=remount-ro, like obdfilter (2009)
3428 - initialize lock handle to avoid ASSERT on error cleanup (3057)
3429 - don't use cancelling-locks' kms values (2947)
3430 - use highest lock extent for kms, not last one (2925)
3431 - don't dereference ERR_PTR() dentry in error handling path (3107)
3432 - fix thread race in portals_debug_dumplog() (3122)
3433 - create lprocfs device entries at setup instead of at attach (1519)
3434 - common AST error handler, don't evict client on completion race (3145)
3435 - zero nameidata in detach_mnt in 2.6 (3118)
3436 - verify d_inode after revalidate_special is valid in 2.6 (3116)
3437 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
3438 - initialize RPC timeout timer earlier for 2.6 (3219)
3439 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
3440 - print nal/nid for unknown nid (3258)
3441 - additional checks for oscc recovery before doing precreate (3284)
3442 - fix ll_extent_lock() error return code for 64-bit systems (3043)
3443 - don't crash in mdc_close for bad permissions on open (3285)
3444 - zero i_rdev for non-device files (3147)
3445 - clear page->private before handing to FS, better assertion (3119)
3446 - tune the read pipeline (3236)
3447 - fix incorrect decref of invalidated dentry (2350)
3448 - provide read-ahead stats and refine rpc in flight stats (3328)
3449 - don't hold journal transaction open across create RPC (3313)
3450 - update atime on MDS at close time (3265)
3451 - close LDAP connection when recovering to avoid server load (3315)
3452 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
3453 - don't leak open file on MDS after open resend (3325)
3454 - serialize filter_precreate and filter_destroy_precreated (3329)
3455 - loop device shouldn't call sync_dev() for nul device (3092)
3456 - clear page cache after eviction (2766)
3457 - resynchronize MDS->OST in background (2824)
3458 - refuse to mount the same filesystem twice on same mountpoint (3394)
3459 - allow llmount to create routes for mounting behind routers (3320)
3460 - push lock cancellation to blocking thread for glimpse ASTs (3409)
3461 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
3462 - fix rare problem with rename on htree directories (3417)
3464 - allow default OST striping configuration per directory (1414)
3465 - fix compilation for qswnal for 2.6 kernels (3125)
3466 - increase maximum number of MDS request buffers for large systems
3467 - change liblustreapi to be useful for external progs like lfsck (3098)
3468 - increase local configuration timeout for slow disks (3353)
3469 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
3471 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3474 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
3475 - don't overwrite extent policy data in reply if lock was blocked (2901)
3476 - drop filter export grants atomically with removal from device (2663)
3477 - del obd_self_export from work_list in class_disconnect_exports (2908)
3478 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
3479 - swab reply message in mdc_close, other PPC fixes (2464)
3480 - fix destroying of named logs (2325)
3481 - overwrite old logs when running lconf --write_conf (2264)
3482 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
3483 - fix race in target_handle_connect (2898)
3484 - mds_reint_create() should take same inode create lock (2926)
3485 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
3486 - don't close files for self_export to avoid uninitialized obd (2936)
3487 - allow MDS with the same name as client node (2939)
3488 - hold dentry reference for closed log files for unlink (2325)
3489 - reserve space for all logs during transactions (2059)
3490 - don't evict page beyond end of stripe extent (2925)
3491 - don't oops on a deleted current working directory (2399)
3492 - handle hard links to targets without a parent properly (2517)
3493 - don't dereference NULL lock when racing during eviction (2867)
3494 - don't grow lock extents when lots of conflicting locks (2919)
3496 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
3499 - account for cache space usage on clients to avoid data loss (974)
3500 - lfsck support in lustre kernel code (2349)
3501 - reduce journal credits needed for BRW writes (2370)
3502 - orphan handling to avoid losing space on client/server crashes
3503 - ptlrpcd can be blocked, stopping ALL progress (2477)
3504 - use lock value blocks to assist in proper KMS, faster stat (1021)
3505 - takes i_sem instead of DLM locks internally on obdfilter (2720)
3506 - recovery for initial connections (2355)
3507 - fixes for mds_cleanup_orphans (1934)
3508 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
3509 - block all file creations until orphan recovery completes (1901)
3510 - client remove rq_connection from request struct (2423)
3511 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
3512 - recovery timer race (2670)
3513 - mdc_close recovey bug (2532)
3514 - ptlrpc cleanup bug (2710)
3515 - mds timeout on local locks (2588)
3516 - namespace lock held during RPCs (2431)
3517 - handle interrupted sync write properly (2503)
3518 - don't try to handle a message that hasn't been replied to (2699)
3519 - client assert failure during cleanup after abort recovery (2701)
3520 - leak mdc device after failed mount (2712)
3521 - ptlrpc_check_set allows timedout requests to complete (2714)
3522 - wait for inflight reqs when ptlrpcd finishes (2710)
3523 - make sure unregistered services are removed from the srv_list
3524 - reset bulk XID's when resending them (caught by 1138 test)
3525 - unregister_bulk after timeout
3526 - fix lconf error (2694)
3527 - handle write after unfinished setstripe, stripe-only getstripe (2388)
3528 - readahead locks pages, leaves pending causing memory pressure (2673)
3529 - increase OST request buffers to 4096 on large machines (2729)
3530 - fix up permission of existing directories in simple_mkdir (2661)
3531 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
3532 - don't assign transno to errored transactions (2742)
3533 - don't delete objects on OST if given a bogus objid from MDS (2751)
3534 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
3535 - if rq_no_resend, then timeout request after recovery (2432)
3536 - fix MDS llog_logid record size, 64-bit array alignment (2733)
3537 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
3538 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
3539 - MDS recovery shouldn't delete objects that it has given out (2730)
3540 - if enqueue arrives after completion, don't clobber LVB (2819)
3541 - don't unlock pages twice when trigger_group_io returns error (2814)
3542 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
3543 - don't write pages to disk if there was an error (1450)
3544 - don't ping imports that have recovery disabled (2676)
3545 - take buffered bytes into account when balancing socknal conn (2817)
3546 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
3547 - reconnect unlink llog connection after MDS reconnects to OST (2816)
3548 - remove little-endian swabbing of llog records (1987)
3549 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
3550 - retry reposting request buffers if they fail (1191)
3551 - grow extent at grant time to avoid granting a revoked lock (2809)
3552 - lock revoke doesn't evict page if covered by a second lock (2765)
3553 - disable VM readahead to avoid reading outside lock extents (2805)
3555 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
3556 - updated kernel patches for hp-2.4.20 kernel (2681)
3558 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
3561 - fix truncated write corruption (2366)
3562 - fix for failed assertion in iopen_connect_dentry (1792,2517)
3564 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
3565 - ensure len(uuid) < 37 in lmc (1171)
3566 - fix ia64 OOPS in llog_test (2255)
3567 - zero end of page at obdfilter for partial page writes (2648)
3568 - don't leave stale dentries around after renames (bug 2428)
3569 - fix timeouts when evicting a client with a single lock held (2642)
3570 - set deadline for the initial HELLO message to drain (2634)
3571 - print out dotted-quad IP addresses in the socknal (2302)
3573 - additional debugging for MDS client eviction problem (2443)
3574 - fix mkfsoptions support for osts (2603, 2604)
3576 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
3579 - add series for the vanilla 2.6.0 kernel
3580 - add series for the vanilla 2.4.24 kernel
3581 - add series for a cray x86/64 UL kernel drop
3582 - fix xattr patches for the vanilla 2.4.19 series
3584 - generate true UUIDs in lmc (1171)
3585 - have portals stack dumping break in UML (2466)
3586 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
3587 - allocate with _NOFS in ldlm to avoid deadlock (1933)
3588 - wake callback waiting threads on client eviction (2460)
3589 - Add --ptldebug and --subsystem to lmc (1719)
3590 - update assertion to allow safe interrupt allocation
3591 - set rq_no_resend for cancel requests (2432)
3592 - recalculate ptlrpcd timeout after resend (2494)
3593 - call vfs_rmdir when removing pending directories (2368)
3594 - fix renaming a file to itself (2429)
3595 - lmc creates a default one-stripe lov (2454)
3596 - expand procfs space to handle large clusters (2326)
3597 - increase UML stack to avoid overflow
3598 - update lconf's list of debug and subsystem masks
3599 - fix lfs find --obd (2510)
3600 - /proc tunable for disabling filter read caching (2591)
3601 - stop rpm packages from altering slapd.conf (2301)
3602 - disable nagle in the socknal under 0conf (2578)
3603 - choose mds inode size based on stripe count (2572)
3604 - fix kernel-source rpm problems (2516)
3606 - add --disable-doc to avoid pdf generation (2421)
3607 - update documentation, tests, type-os, comments
3608 - avoid format warnings on ia64
3609 - remove the TOE NAL
3610 - tiny code cleanups by removing unused fields
3612 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
3615 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
3616 - remove the most blatant lies from BUILDING file (2371)
3617 - change default debug level to reasonable production setting
3618 - reduce client side cache size to reduce cache flush time
3619 - reduce max RPCs in flight to avoid unnecessary file fragmentation
3620 - make TCP zerocopy and pinger support enabled by default (2476)
3621 - sync writes completed after process exits caused crashes (2319)
3622 - maintain correct mount count on the MDS (2356)
3623 - backout 1557, because 2316 wasn't really fixed
3624 - better file I/O statistics gathering in /proc
3625 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
3626 - another kernel patch to fix zero-copy TCP function export
3627 - don't take duplicate lock when processing re-sent getattr (2420)
3628 - lctl uses obd_self_export instead of creating new conn (2353)
3629 - MDS/OST recovery case which requires object creation asserted (2425)
3630 - move lfs from /usr/sbin to /usr/bin in packages
3631 - fix race between mds_client_add and mds_client_free (2417)
3632 - use kmalloc instead of slabs in portals (2430)
3633 - don't create duplicate records when a failover MDS is present (2442)
3634 - remove unnecessary mount age check (2332)
3635 - don't remove directory inodes from locks prematurely (2451)
3636 - don't break if MDS service name is the same as hostname (2103)
3637 - fix races in client write RPC generation when cache full (2482)
3639 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
3642 - remove now-unused request->rq_obd (278)
3643 - if an allocation fails, print out how much memory we've used (1933)
3644 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
3645 - add the "configurable stack size" patch to most series files (1256)
3646 - ability to write large log records, for 100+ OST configs (2306)
3647 - fix NULL deref when filter_prep fails (2314)
3648 - fix operator precedence error in filter_sync
3649 - dynamic allocation of socknal TX descriptors (2315)
3650 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
3651 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
3652 - ensure that CWARN messages in Portals always get to the syslog
3653 - __init/__exit are not for prototype decls (ldlm_init/exit)
3654 - x86-64 compile warning fixes
3655 - fix gateway LMC keyword conflict (2318)
3656 - fix MDS lock inversions in getattr/reint paths (1844)
3657 - fix a rare lock re-ordering bug, which caused deadlock (2322)
3658 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
3659 - DLM race condition prevented some lock evictions (2328)
3660 - ENOMEM detection and retry on socknal sends (2230)
3661 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
3662 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
3663 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
3664 - better error messages when a client is rejected during recovery (1505)
3665 - avoid cancelling locks which were never granted, after failure (2330)
3666 - fix i_sem/journal inversion in mds_client_add (2333)
3667 - fix truncate/getattr lock cycle deadlock (2334)
3668 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
3669 - fix two rare exit paths which could leak an l_lock() ref (2321)
3670 - fencepost error in MDS/OST orphan recovery (2226)
3671 - make log record alignment 8 bytes (1988)
3672 - lstripe now fails when requested offset > ost_count (2237)
3673 - ensure that all kernel series have a complete list.h (1607)
3674 - fix crashes in special-file operations (2316)
3675 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
3677 - allow configurable automake binary, for testing new versions
3678 - small update to the lfs documentation
3680 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
3682 * fix negative export reference count in fsfilt_sync (2312)
3684 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
3685 * release candidate 0.9.1
3687 - orphans are moved into the PENDING directory for possible recovery
3688 - replayed opens now open by fid for orphan/rename safety (1042)
3689 - last close of an orphan inode generates a transno (683)
3690 - chdir() and mount() now pin the directory entry (1020)
3691 - avoid CERROR in normal ll_setattr_raw() error case (1500)
3692 - discard very old requests without processing them (1502)
3693 - remove some common, well-understood CERRORs (1505)
3694 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
3695 - clear "grant" flags in OST replies until OST grant code lands (1644)
3696 - fix read performance by not clobbering i_blksize on client (1598)
3697 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
3698 - make LRU size a /proc tunable, clears locks when reduced (707)
3699 - fix some lprocfs rot that prevented ptlbd from loading (1732)
3700 - server locks take references on exports now (1558)
3701 - build fixes for 2.4.20-rh trees (1663)
3702 - return an error from lov_create if all OSCs are inactive (1751)
3703 - fix import levels when a reconnect happens without a timeout (1597)
3704 - exit early from mds_open if we get a lookup error (1749)
3705 - partial page read at EOF wouldn't wait for disk before sending (1642)
3706 - avoid NULL deref in obdfilter when reading page past EOF (1592)
3707 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
3708 - fix LBUG in ll_it_open_error with rc = -2 (1861)
3709 - write/truncate lock inversion (1639)
3710 - Don't auto-load obdclass, portals modules during cleanup (1495)
3711 - fix timestamps from jumping to "now" (1763)
3712 - extra journal assertions (1648)
3713 - add an extra multiunlink test (1771)
3714 - fix read_record/write_record API (1776)
3715 - fix leak of offset_extent, possible incorrect i_size later (1772)
3716 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
3717 - Debugging for the kqswnal_get_idle_tx problems (1820)
3718 - Allow recovery to be attempted multiple times (1536)
3719 - Write out MDS last_rcvd file after it is first created (1600)
3720 - Fix tx_descriptor leak in failed transmit situations (1827)
3721 - ext3 journaling fixes for assertion failure after IO error (1871)
3722 - class_export_put() on freed export after completion AST error (1896)
3723 - Fix revalidate looping in VFS (1322)
3724 - Don't access a freed export during MDS_REINT timeout (1521)
3725 - Add open-unlink recovery support on the MDS (1673,1764)
3726 - Return an error if no MDS data was read from last_rcvd (1946)
3727 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
3728 - Don't setup a disk device that doesn't match exported UUID (317)
3729 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
3730 - avoid committing NULL handle in force close
3731 - local.sh is now a one-stripe LOV configuration
3732 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
3733 - fix ext3 htree duplicate directory entry corruption (1516)
3734 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
3735 - update to new LOV EA format (2097)
3736 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
3738 2003-06-15 Phil Schwan <phil@clusterfs.com>
3741 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
3742 - per-import/export recovery handling (958, 931, 959)
3743 - multiple last-rcvd slots, for serving multiple FSes (949)
3744 - connections are again shared between multiple imp/exports (963, 964)
3745 - "umount -f" would hang if any requests needed to be sent (393, 978)
3746 - avoid pinning large req buffer by copying for queued messages (989)
3747 - add "uuid" to "lctl device" command to help upcalls (991)
3748 - "open" RPCs with transnos would confuse recovery counters (1037)
3749 - do proper endian conversion of all wire messages (288, 340, 891)
3750 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
3751 - call waiting locks callback from LDLM recovery thread (1127, 1151)
3752 - fix ptlrpc_connection leak in target_handle_connect (1174)
3753 - fix import refcounting bug in OST and MDS cleanup (1134)
3754 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
3755 - fix very unlikely obd_types race condition (501)
3756 - remove osc_open hack for echo_client (1187)
3757 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
3758 - a failure in read_inode2 leads to deadlock (1139)
3759 - cancel ack-locks as soon as transaction is committed (1072)
3760 - fix major leaks and crashes in the bulk I/O path (937, 1057)
3761 - make sure to commitrw after any preprw to avoid deadlock (1162)
3762 - failing to execute a file in a lustre FS would lock inode (1203)
3763 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
3764 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
3765 - obd_uuid2tgt would walk off the end of the list (1255)
3766 - on IA64 the osc would give portals incorrect bulk size (1258)
3767 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
3768 - fix lock inversion caused by new llite matching code (1282)
3769 - limit the number of dirty pages on a client to 10MB (1286)
3770 - timed out locks were not being corrected cancelled (1289)
3771 - fix O_DIRECT above 4GB on IA-32 (1292)
3772 * major user-visible changes
3773 - fail out/fail over policy now controlled by the upcall (993)
3775 - add OBD_PING to check server availability and failure (954)
3776 - lustre messages are now sent in sending host order (288, 340, 891)
3777 - add eadatalen to MDS getattr reply (340)
3778 - OST read replies may contain second buffer, with per-page status (593)
3780 2003-03-11 Phil Schwan <phil@clusterfs.com>
3783 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
3784 - failed open()s could cause deadlock; fixed (867, 869)
3785 - stop cancelling OST locks when files are closed (481)
3786 - overlapping XID spaces caused network corruption (851, 853)
3787 - fix unsafe fsfilt counter arithmetic; change to atomic_t
3788 - setattr_raw added, to do single-RPC, server-side setattrs
3789 - lmc/lconf syntax change for OST UUIDs
3790 - fix crashy race condition between ptlrpc_free_req and osc_close
3791 - don't use request in mdc_enqueue if we hit a timeout (889)
3792 - don't set the inode i_size for regular files from the MDS (896)
3793 - handle out of order completion AST (842)
3794 - don't LBUG if a lock request times out after receiving AST (913)
3795 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
3796 - if a bad lock AST arrives, send an error instead of dropping entirely
3797 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
3798 - fix leak in bulk IO when only partially completed (899, 900, 926)
3799 - fix O_DIRECT for ia64 (55)
3800 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
3801 - C-z after timeout could hang a process forever; fixed (977)
3803 - client-side I/O cache (678, 924, 929, 941, 970)
3805 - READPAGE and SETATTRs which don't take server-side locks get
3808 2003-02-11 Phil Schwan <phil@clusterfs.com>
3811 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
3812 - Fix fsfilt_extN_readpage() to read a full page of directory
3813 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
3814 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
3815 - Fix imbalanced LOV object allocation and out-of-bound access (469)
3816 - Most intent operations were removed, in favour of a new RPC mode
3817 that does a single RPC to the server and bypasses most of the VFS
3818 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
3819 - Aggressively cancel local locks on DLM servers
3820 - mds_reint_unlink sends EA to the client if it's the last nlink.
3821 client uses that EA to unlink OST objects.
3822 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
3823 - recursive symlinks were fixed (439)
3824 - fixed NULL deref in DEBUG_REQ
3825 - filter_update_lastobjid no longer calls sync, which annoyed extN
3826 - fixed multi-client small-writes to a single file problem (445)
3827 - fixed mtime updates during file writes (607)
3828 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
3829 - fixed bug in obd_brw_read/write() (under guise of testing 367)
3830 - fixed Linux OST size reporting problem (444, 656)
3831 - OST now updates object mtime with writes or setattr (607, 619)
3832 - client verifies file size before zeroing page past EOF (445)
3833 - OST now writes last allocated objid to disk with allocation (108)
3834 - LOV on echo now works (409)
3836 - mds_reint_unlink sends a new buffer, with the EA included. this
3837 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
3838 set if a regular file was being unlinked, and it was the last link
3839 - use PtlGet from the target for bulk writes (315)
3840 - OST now updates object mtime with writes or setattr (607, 619)
3841 - LDLM now has a grant-time callback to revalidate locked items, if
3843 - Many MDS operations were reorganized to combat race conditions
3845 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
3846 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
3848 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
3851 - Fully reactivate OST imports after reconnection (512, others)
3852 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
3853 - More graceful error handling for truncating on dead OST (515)
3854 - Don't error out unless we're actually accessing dead stripes (474)
3855 - Fix garbage sizes when stripes are missing (410)
3856 - LRU counters were broken, causing constant lock purge (433, 432)
3857 - garbage on read from stripes with failed OSTs (441)
3858 - mark OSCs as active before reconnecting during recovery (438)
3859 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
3860 - lfind did not preserve OST order in output (443)
3861 - symlinks cause hung clients, incorrect data (439)
3862 - stop dereferencing request after dropping refcount (457)
3863 - don't LASSERT(spin_is_locked) on non-SMP (455)
3864 - fixes for many rename() bugs
3865 - fstat didn't correctly synchronize attributes (399)
3866 - server must handle lock cancellation during blocking AST prep (487)
3867 - bulk descriptors were free()d too soon (511)
3868 - fix paths in lconf, which would load incorrect modules (451, 507)
3869 - fix confusing lconf 'host not found' error message (386)
3870 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
3871 - fix race condition in mdc_blocking_ast() for inode access (526)
3872 - fix lov_unpackmd() unpacking wrong number of stripes (537)
3873 - fix lov_set_osc_active() marking wrong OSC inactive (440)
3874 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
3875 - fix multiple writes of stripe MD to MDS (358, maybe 519)
3876 - fix lstripe in several ways (kernel side) (527)
3877 - fix request leak in ldlm_cli_enqueue (262)
3878 - incorrect OSC was marked inactive after OST failure
3879 - call mds_fs_cleanup before unmounting filesystem (524)
3880 - fix races between taking ns_lock and ldlm_lock_change_resource
3881 - fix races updating LOV export open file list
3882 - fix lov_enqueue error path, avoid decref-ing bad lock handle
3883 - fix recovery NULL deref in ldlm_cli_cancel_unused
3884 - fix some DLM races by using new hash table for lock handles (419)
3885 - permit the client to specify desired inodes, at replay
3886 - duplicate requests when we queue them for replay reintegration
3887 - fix last_rcvd offset calculation
3888 - sync after each recovered transaction, so we always make progress
3889 - never, not always, ERESTART requests without transnos
3890 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
3892 - skip replay if the MDS says that the client is already connected
3893 - don't check for a recovery-enabled export to match lctl's UUID
3894 - don't INC_USE_COUNT for phantom exports
3895 - don't crash when cleaning up phantom exports (567)
3896 - don't double-finish or set replay data for errored mdc_open requests
3897 - abort requests when they time out, so we don't get old replies
3898 - send/receive replies for AST messages again
3899 - if the client says that it doesn't have the lock, cancel it on the
3901 - if we timeout during I/O, don't try to cancel an in-use lock; instead
3902 mark it as destroyed, it will all work out when decref is called
3903 - fix module use counts (22, 581)
3905 - ASTs now expect a reply (server cancels lock on error reply)
3907 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
3910 - fix many simultaneous client startup (392)
3911 - fix dentry->d_it clobbering
3912 - credentials weren't being shipped for readdir/getattr operations
3913 - remove invalid assertions triggered during some concurrent MD
3915 - proper Lustre versions added (336, 389)
3916 - fix memory leak for create error case (398)
3917 - fix LOV locking bug that would get cli/srv out of sync
3918 - fix echo client over LOV (409)
3919 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
3920 - fix double-O_EXCL intent crash (424)
3921 - avoid sending multiple lock CANCELs (352)
3923 - MDS can do multi-client recovery (modulo bugs in new code)
3925 - many updates, edits, cleanups
3927 2002-11-18 Phil Schwan <phil@clusterfs.com>
3930 - fix null d_it dereference (346)
3931 - fix full OST/dbench hang (333)
3932 - fix permission problem with file removal (286)
3933 - fix removal of OSCs from LOV when they fail
3934 - fix NULL deref during bulk timeout (214)
3935 - fix problems related to multiple filesystems on one MDS (241)
3936 - fixed serious subtle metadata locking bugs
3937 - free locks on clients when inodes are removed due to memory
3939 - fix inode pointer in lock data (285)
3940 - partial support for multiple MDS on a single host (241)
3941 - data locks weren't cancelled at clear_inode time (290, 311)
3942 - intent locks could lead to unbounded lock growth (205)
3943 - added a maximum lock count, an LRU list, and a flusher
3944 - fix multiple rename (365)
3945 - properly abstracted the echo client
3946 - OSC locked 1 byte too many; fixed
3947 - rewrote brw callback code:
3948 - fixed recovery bugs related to LOVs (306)
3949 - fixed too-many-pages-in-one-write crash (191)
3950 - fixed (again) crash in sync_io_timeout (214)
3951 - probably fixed callback-related race (385)
3953 - Add capability to MDS protocol
3954 - LDLM cancellations and callbacks on different portals
3956 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3959 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3960 - defer open object destruction to close time (601981, 138)
3961 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3962 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3963 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3964 - don't call obd_setattr in ll_file_release for destroyed objects
3965 * protocol change to lustre_msg: move |version| and add |flags|
3966 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3967 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3968 * added replay of create, unlink, link and rename operations during
3969 MDS failover; recovery should be much more robust now
3970 * remove failed OSCs from LOVs (only lov_create uses this so far)
3971 * the lustre-HOWTO was brought (more) up to date (582544)
3973 2002-10-23 Phil Schwan <phil@clusterfs.com>
3976 - in-use dentries weren't being reused properly (617851)
3977 - prevent multiple LDLM setup (599178)
3978 - fix LOV size calculations for truncate (617853)
3979 - fix client handling of MDS intent errors (POSIX)
3980 - fix permission bug in lovstripe.c test (624321)
3981 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3982 - truncate past end of file could corrupt data
3983 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3984 - a race in recovery could return ETIMEDOUT to apps (623947)
3985 - building outside the source directory was fixed
3986 * the lustre-HOWTO was brought (more) up to date (582544)
3987 * major progress was made on recovery functionality
3989 2002-10-10 Phil Schwan <phil@clusterfs.com>
3992 - recovery deadlock fix
3993 - rm -rf causes LBUG fix (617817)
3994 - file open by multiple tasks fix (618962)
3995 - directory permissions bugs (602707 and 620007)
3996 - journal_stop fixed with locking (611313)
3997 - O_APPEND failures resolved (618273, perhaps 614459)
3998 - lconf PATH fix (619770)
3999 - IA64 build fix (621450)
4000 - RPC buffer sizes scale with amount of memory
4002 2002-10-01 Phil Schwan <phil@clusterfs.com>
4005 - locks would be cancelled without throwing away data pages,
4006 resulting in inconsistent data (605627)
4007 - inode attributes were not always being refreshed (605627, 612449)
4008 - lconf now continues to cleanup after lctl reports an error
4009 - MDS now enforces user permissions (602707)
4010 - lprocfs cleanup fixed, but not yet enabled (614157)
4011 - fixed infinite server hang, should a client not respond to an AST
4012 - avoid going into recovery if user calls readlink() with a buffer
4013 that's too small (613941)
4014 - AST RPCs no longer require replies (614867) -- this may be changed
4015 - don't crash server if client sends an IOV that's too big (611336)
4016 - fixed lock conversion deadlock (611892)
4017 - fixed the following of symlinks (614622)
4018 * recovery: the server can remove locks from a client that dies, other
4019 clients can make progress
4020 * more extN patch fixes
4021 * compile-time configurable ptlrpc buffer allocations
4023 - collaborative read cache document
4024 - Lustre Lite Performance CDR document-in-progress
4026 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4029 - fix typo in patch-2.4.18
4031 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4034 - clear ptlrpc request each time in handle_incoming_request()
4035 - unlink of files now destroys the object on the OST
4037 2002-09-19 Peter Braam <braam@clusterfs.com>
4039 * add hard link support
4040 * change obdfile creation method
4041 * kernel patch changed
4043 2002-09-19 Peter Braam <braam@clusterfs.com>
4046 - stack overflow bug in extN fixed
4048 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
4050 * documentation updates
4051 - add man pages for config tools
4052 - update tests/README to describe testing with new config tools
4053 - finish metadata API descriptions
4054 * bug fixes and cleanups
4055 - statfs workaround for 16TB limit
4056 - LOV stripe allocation improved, can stripe on subset of OSTs
4057 - LOV file size/IO offset was wrong for files > 4GB in size
4058 - object EA data was being dropped, caused files to be unreadable
4059 - memory overflow with non-LOV OST caused memory corruption
4060 - fixed regression tests to work with new config tools, obdfilter
4061 - fixed bug when directory size became larger than 1 block
4062 - fixed bug (for single client case) when PWD was deleted
4063 - invalidate local directory pages when doing intent-based ops
4064 - avoid LDLM oops when lock callback contained bad data
4066 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
4068 * documentation updates
4069 * bug fixes and cleanups
4070 - configuration tools
4073 - 64-bit compile warnings
4074 - 64-bit internal statfs data
4076 * test_brw on persistent OST devices
4078 * lprocfs (disabled)
4080 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
4082 * documentation updates
4083 * bug fixes and cleanups
4084 * configuration tools
4086 2002-08-30 Peter J. Braam <braam@clusterfs.com>
4089 * many small fixes to 0_5_4
4090 * io/network handling
4091 * thinkos in MDS operations
4093 2002-08-24 Peter J. Braam <braam@clusterfs.com>
4096 * crucial basic fixes to 0.5.3
4097 * IOR, Iozone work over Elan
4100 2002-08-07 Phil Schwan <phil@clusterfs.com>
4101 * version 0_5_3, our first alpha
4102 * we use the new Portals iovs
4103 * documentation updates
4104 * bug fixes and cleanups
4105 * small changes in the DLM wire protocol
4107 2002-07-25 Peter J. Braam <braam@clusterfs.com>
4108 * version 0_5_1 with some initial stability,
4109 * locking on MD and file I/O.
4110 * documentation updates
4111 * several bug fixes since 0.5.0
4112 * small changes in wire protocol
4114 2002-07-18 Phil Schwan <phil@clusterfs.com>
4116 * delivered as Lustre Light Alpha
4117 * fixed a crash after handling invalid MDS requests
4118 * fixed directory pages for architectures with non-4k pages sizes
4120 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
4121 * release version v0_4_4
4122 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
4124 * Fixes a number of interruption problems with OST operations.
4125 * Update documentation for portals header changes
4126 * Move all wire protocol structs/defines to lustre_idl.h
4127 * Fixes symlink length bug.
4128 * Add tcpdump to repository.
4130 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
4131 * release version v0_4_3
4132 * Fixes statfs for inodes on extN.
4133 * Fixes bug in runtests which would delete /etc/hosts.
4134 * Use 64-bit object IDs wherever possible (not into VFS though)
4135 Remove ost_get_info, which is unused by lustre, and out of date.
4137 2002-07-03 Peter Braam <braam@clusterfs.com>
4138 * release version v0_4_2 Fixes a lookup error (type not passed)
4139 * move forward to head of Portals
4140 * move forward to latest Lustre kernel
4142 2002-06-25 Peter Braam <braam@clusterfs.com>
4143 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob