1 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
4 INTEROPERATE with older versions automatically. In many cases a
5 special upgrade step is needed. Please read the
6 user documentation before upgrading any part of a 1.4.x system.
7 * WARNING: Lustre configuration and startup changes are required with
8 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
10 * Support for kernels:
11 2.6.9-42.0.3EL (RHEL 4)
13 2.4.21-47.0.1.EL (RHEL 3)
14 2.6.12.6 vanilla (kernel.org)
15 2.6.16.21-0.8 (SLES10)
16 * Client support for unpatched kernels:
17 (see https://mail.clusterfs.com/wikis/lustre/PatchlessClient)
18 2.6.16 - 2.6.19 vanilla (kernel.org)
19 2.6.9-42.0.3EL (RHEL 4)
20 * Recommended e2fsprogs version: 1.39.cfs2-0
23 Severity : enhancement
25 Description: MountConf
26 Details : Lustre configuration is now managed via mkfs and mount
27 commands instead of lmc and lconf. New obd types (MGS, MGC)
28 are added for dynamic configuration management. See
29 https://mail.clusterfs.com/wikis/lustre/MountConf for
32 Severity : enhancement
34 Description: dynamic OST addition
35 Details : OSTs can now be added to a live filesystem
37 Severity : enhancement
39 Description: startup order invariance
40 Details : MDTs and OSTs can be started in any order. Clients only
41 require the MDT to complete startup.
43 Severity : enhancement
45 Description: parallel, asynchronous orphan cleanup
46 Details : orphan cleanup is now performed in separate threads for each
47 OST, allowing parallel non-blocking operation.
49 Severity : enhancement
51 Description: optimized stripe assignment
52 Details : stripe assignments are now made based on ost space available,
53 ost previous usage, and OSS previous usage, in order to try
54 to optimize storage space and networking resources.
56 Severity : enhancement
58 Description: Permanently set tunables
59 Details : All writable /proc/fs/lustre tunables can now be permanently
60 set on a per-server basis, at mkfs time or on a live
63 Severity : enhancement
65 Description: Lustre message v2
66 Details : Add lustre message format v2.
68 Severity : enhancement
70 Description: client OST exclusion list
71 Details : Clients can be started with a list of OSTs that should be
72 declared "inactive" for known non-responsive OSTs.
75 Frequency : SFS test only (otherwise harmless)
77 Description: SPEC SFS validation failure on NFS v2 over lustre.
78 Details : Changes the blocksize for regular files to be 2x RPC size,
79 and not depend on stripe size.
81 Severity : enhancement
83 Description: Multiple MD RPCs in flight.
84 Details : Further unserialise some read-only MDS RPCs - learn about intents.
85 To avoid overly-overloading MDS, introduce a limit on number of
86 MDS RPCs in flight for a single client and add /proc controls
89 Severity : enhancement
91 Description: client read/write statistics
92 Details : Add client read/write call usage stats for performance
93 analysis of user processes.
94 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
95 file access. extents_stats shows chunk size distribution.
96 extents_stats_per_process show chunk size distribution per
99 Severity : enhancement
101 Description: per-client statistics on server
102 Details : Add ldlm and operations statistics for each client in
103 /proc/fs/lustre/mds|obdfilter/*/exports/
105 Severity : enhancement
107 Description: mds statistics
108 Details : Add detailed mds operations statistics in
109 /proc/fs/lustre/mds/*/stats
111 Severity : enhancement
113 Description: VFS operations stats
114 Details : Add client VFS call stats, trackable by pid, ppid, or gid
115 /proc/fs/lustre/llite/*/vfs_ops_stats
116 /proc/fs/lustre/llite/*/track_[pid|ppid|gid]
121 Description: Fix client-side osc byte counters
122 Details : The osc read/write byte counters in
123 /proc/fs/lustre/osc/*/stats are now working
126 Frequency : always as root on SLES
128 Description: Failure of copying files with lustre special EAs.
129 Details : Client side always return success for setxattr call for lustre
130 special xattr (currently only "trusted.lov").
135 Description: Refcount LNET uuids
136 Details : The global LNET uuid list grew linearly with every startup;
137 refcount repeated list entries instead of always adding to
140 Severity : enhancement
142 Description: Dynamic service threads
143 Details : Within a small range, start extra service threads
144 automatically when the request queue builds up.
147 Frequency : mixed-endian client/server environments
149 Description: mixed-endian crashes
150 Details : The new msg_v2 system had some failures in mixed-endian
153 Severity : enhancement
155 Description: Easy OST removal
156 Details : OSTs can be permanently deactivated with e.g. 'lctl
157 conf_param lustre-OST0001.osc.active=0'
159 Severity : enhancement
161 Description: MGS proc entries
162 Details : Added basic proc entries for the MGS showing what filesystems
165 Severity : enhancement
167 Description: provide MGS failover
168 Details : Added config lock reacquisition after MGS server failover.
170 Severity : enhancement
172 Description: add Linux 2.4 support
173 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
177 Description: a large application tries to do I/O to the same resource and dies
179 Details : Check the req->rq_arrival time after the call to
180 ost_brw_lock_get(), but before we do anything about
181 processing it & sending the BULK transfer request. This
182 should help move old stale pending locks off the queue as
183 quickly as obd_timeout.
186 Frequency : when an incorrect nid is specified during startup
188 Description: ptlrpc connect to non-existant node causes kernel crash
189 Details : LNET can't be re-entered from an event callback, which
190 happened when we expire a message after the export has been
191 cleaned up. Instead, hand the zombie cleanup off to another
194 Severity : enhancement
196 Description: plain/inodebits lock performance improvement
197 Details : Grouping plain/inodebits in granted list by their request modes
198 and bits policy, thus improving the performance of search through
202 Frequency : only if OST filesystem is corrupted
204 Description: client incorrectly hits assertion in ptlrpc_replay_req()
205 Details : for a short time RPCs with bulk IO are in the replay list,
206 but replay of bulk IOs is unimplemented. If the OST filesystem
207 is corrupted due to disk cache incoherency and then replay is
208 started it is possible to trip an assertion. Avoid putting
209 committed RPCs into the replay list at all to avoid this issue.
212 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs
215 Description: System hang on startup
216 Details : This bug allowed the liblustre (e.g. catamount) client to
217 return to the app before handling all startup RPCs. This
218 could leave the node unresponsive to lustre network traffic
219 and manifested as a server ptllnd timeout.
221 Severity : enhancement
223 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
224 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
225 boolean to control whether to print peer debug info when a
226 client's RPC times out.
229 Frequency : only for kernels with patches from Lustre below 1.4.3
231 Description: Remove old rdonly API
232 Details : Remove old rdonly API which unsed from at least lustre 1.4.3
235 Frequency : only for devices with external journals
237 Description: Set external device read-only also
238 Details : During a commanded failover stop, we set the disk device
239 read-only while the server shuts down. We now also set any
240 external journal device read-only at the same time.
243 Frequency : when upgrading from 1.4 while trying to change parameters
245 Description: The wrong (new) MDC name was used when setting parameters for
246 upgraded MDT's. Also allows changing of OSC (and MDC)
247 parameters if --writeconf is specified at tunefs upgrade time.
250 ------------------------------------------------------------------------------
252 TBD Cluster File Systems, Inc. <info@clusterfs.com>
254 * Support for kernels:
255 2.6.9-42.0.3EL (RHEL 4)
257 2.4.21-47.0.1.EL (RHEL 3)
258 2.6.12.6 vanilla (kernel.org)
259 * Recommended e2fsprogs version: 1.39.cfs2-0
264 Description: make O_SYNC working on 2.6 kernels
265 Details : 2.6 kernels use different method for mark pages for write,
266 so need add a code to lustre for O_SYNC work.
271 Description: Failure to close file and release space on NFS
272 Details : Put inode details into lock acquired in ll_intent_file_open.
273 Use mdc_intent_lock in ll_intent_open to properly
274 detect all kind of errors unhandled by mdc_enqueue
279 Description: proc file read during shutdown sometimes raced obd removal,
281 Details : Add lock to prevent obd access after proc file removal.
284 Frequency : Only for files larger than 4GB on 32-bit clients.
286 Description: improperly doing page alignment of locks
287 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
288 PAGE_*. Make CFS_PAGE_MASK 64bit long.
293 Description: RPCs being resent when they shouldn't be
294 Details : Some RPCs that should not be resent are being resent. This
295 can cause inconsistencies in the RPC state machine. Do not
296 resend such requests.
299 Frequency : rare, only with NFS export
301 Description: Crash on NFS re-export node
302 Details : under very unusual load conditions an assertion is hit in
303 ll_intent_file_open()
308 Description: large O_DIRECT requests fail under memory pressure/fragmentation
309 Details : Large single O_DIRECT read and write calls can fail to allocate
310 a sufficiently large buffer to process the request. In case of
311 allocation failure the allocation is retried with a smaller
312 buffer and broken into smaller requests.
317 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
318 > 32000 subdirectories
319 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
320 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
321 subdirectory count crosses 32000. This will aid e2fsck to
322 correctly handle more than 32000 subdirectories.
324 ------------------------------------------------------------------------------
326 TBD Cluster File Systems, Inc. <info@clusterfs.com>
328 * Support for kernels:
329 2.6.9-42.0.3EL (RHEL 4)
331 2.4.21-40.0.1.EL (RHEL 3)
332 2.6.12.6 vanilla (kernel.org)
338 Description: "went back in time" messages on mds failover
339 Details : The greatest transno may be lost when the current operation
340 finishes with an error (transno==0) and the client's last_rcvd
341 record is over-written. Save the greatest transno in the
342 mds_last_transno for this case.
345 Frequency : always for specific kernels and striping counts
347 Description: client may get "Matching packet too big" without ACL support
348 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
349 when trying to access files in certain configurations. The
350 clients should in fact be denied when mounting because they do
354 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
356 Description: many clients connecting with IO in progress causes connect timeouts
357 Details : Avoid synchronous journal commits to avoid delays caused by many
358 clients connecting/disconnecting when bulk IO is in progress.
359 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
360 OST_IO_PORTAL to avoid delays behind potentially many pending
364 Frequency : occasionally with multiple writers to a single file
366 Description: shared writes to file may result in wrong size reported by stat()
367 Details : Allow growing of kms when extent lock is cancelled
370 Frequency : always with random mmap IO to multi-striped file
372 Description: mmap write might be lost if we are writing to a 'hole' in stripe
373 Details : Only if the hole is at the end of OST object so that kms is too
374 small. Fix is to increase kms accordingly in ll_nopage.
377 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
379 Description: writes to a missing object would leak memory on the OST
380 Details : If there is an inconsistency between the MDS and OST filesystems,
381 such that the MDS references an object that doesn't exist, writes
382 to that object will leak memory due to incorrect cleanup in the
383 error handling path, eventually running out of memory on the OST.
388 Description: Creating too long symlink causes lustre errors
389 Details : Check symlink and name lengths before sending requests to MDS.
392 Frequency : only if flock is enabled (not on by default)
394 Description: posix locks not released on fd closure on 2.6.9+
395 Details : We failed to add posix locks to list of inode locks on 2.6.9+
396 kernels, this caused such locks not to be released on fd close and
397 then assertions on fs unmount about still used locks.
400 Frequency : MDS failover only, very rarely
402 Description: clients may get ASSERTION(granted_lock != NULL)
403 Details : When request was taking a long time, and a client was resending
404 a getattr by name lock request. The were multiple lock
405 requests with the same client lock handle and
406 mds_getattr_name->fixup_handle_for_resent_request found one
407 of the lock handles but later failed with
408 ASSERTION(granted_lock != NULL).
413 Description: handle->h_buffer_credits > 0, assertion failure
414 Details : h_buffer_credits is zero after truncate, causing assertion
415 failure. This patch extends the transaction or creates a new
419 Frequency : NFS re-export or patchless client
420 Bugzilla : 11179, 10796
421 Description: Crash on NFS re-export node (__d_move)
422 Details : We do not want to hash the dentry if we don't have a lock.
423 But if this dentry is later used in d_move, we'd hit uninitialised
424 list head d_hash, so we just do this to init d_hash field but
425 leave dentry unhashed.
428 Frequency : NFS re-export or patchless client
430 Description: NFS exports has problem with symbolic link
431 Details : lustre client didn't properly install dentry when re-exported
432 to NFS or running patchless client.
435 Frequency : NFS re-export or patchless client
437 Description: Various nfs/patchless fixes.
438 Details : fixes reuse disconected alias for lookup process - this fixes
439 warning "find_exported_dentry: npd != pd", fix permission
440 error with open files at nfs.
443 Frequency : occasional
445 Description: Crash on NFS re-export node
446 Details : call clear_page on wrong pointer triggered oops in
447 generic_mapping_read().
450 Frequency : rarely, using O_DIRECT IO
452 Description: unaligned directio crashes client with LASSERT
453 Details : check for unaligned buffers before trying any requests.
456 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
458 Description: stale data returned from RAID cache
459 Details : If only a small amount of IO is done to the RAID device before
460 reading it again it is possible to get stale data from the RAID
461 cache instead of reading it from disk.
464 Frequency : depends on arch, kernel and compiler version, always on sles10
467 Description: recursive or deep enough symlinks cause stack overflow
468 Details : getting rid of large stack-allocated variable in
472 Frequency : depends on hardware
474 Description: lustre write performance loss in the SLES10 kernel
475 Details : the performance loss is caused by using of write barriers in the
476 ext3 code. The SLES10 kernel turns barrier support on by
477 default. The fix is to undo that change for ldiskfs.
479 ------------------------------------------------------------------------------
481 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
483 * Support for kernels:
484 2.6.9-42.0.3EL (RHEL 4)
486 2.4.21-47.0.1.EL (RHEL 3)
487 2.6.12.6 vanilla (kernel.org)
491 Frequency : quota enabled and large files being deleted
493 Description: releasing more than 4GB of quota at once hangs OST
494 Details : If a user deletes more than 4GB of files on a single OST it
495 will cause the OST to spin in an infinite loop. Release
496 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
501 Description: statfs data retrieved from /proc may be stale or zero
502 Details : When reading per-device statfs data from /proc, in the
503 {kbytes,files}_{total,free,avail} files, it may appear
504 as zero or be out of date.
507 Frequency : always, for aggregate stripe size over 4GB
509 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
510 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
511 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
514 Frequency : always if "lfs find" used on a local file/directory
516 Description: "lfs find" segfaults if used on a local file/directory
517 Details : The case where a directory component was not specified wasn't
518 handled correctly. Handle this properly.
521 Frequency : always on ppc64
523 Description: the write to an ext3 filesystem mounted with mballoc got stuck
524 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
525 perform endianness conversion.
528 Frequency : rarely (truncate to non-zero file size after write under load)
529 Bugzilla : 10730, 10687
530 Description: Files padded with zeros to next 4K multiple
531 Details : With filesystems mounted using the "extents" option (2.6 kernels)
532 it is possible that files that are truncated to a non-zero size
533 immediately after being written are filled with zero bytes beyond
534 the truncated size. No file data is lost.
536 Severity : enhancement
537 Frequency : liblustre only
539 Description: Allow recovery/failover for liblustre clients.
540 Details : liblustre clients were unaware of failover configurations until
543 Severity : enhancement
545 Description: user file locks should fail when not mounting with flock option
546 Details : Set up an error-returning stub in ll_file_operations.lock field
547 to prevent incorrect behaviour when client is mounted without
548 flock option. Also, set up properly f_op->flock field for
552 Frequency : always on ia64
554 Description: "lfs df" loops on printing out MDS statfs information
555 Details : The obd_ioctl_data was not initialized and in some systems
556 this caused a failure during the ioctl that did not return
557 an error. Initialize the struct and return an error on failure.
560 Frequency : SLES 9 only
562 Description: Error of copying files with lustre special EAs as root
563 Details : Client side always return success for setxattr call for lustre
564 special xattr (currently only "trusted.lov").
567 Frequency : rarely on clusters with both ia64+i386 clients
569 Description: ia64+i686 clients doing shared IO on the same file may LBUG
570 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
571 clients are doing concurrent writes to the same file it is
572 possible that the ia64 clients may LASSERT because the OST
573 extent locks are not PAGE_SIZE aligned. Ensure that grown
574 locks are always aligned on the request boundary.
577 Frequency : specific use, occasional
579 Description: Overwriting in use executable truncates on-disk binary image
580 Details : If one node attempts to overwrite an executable in use by
581 another node, we now correctly return ETXTBSY instead of
587 Description: chmod on Lustre root is propagated to other clients
588 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
589 invalid by the follow_mount time.
594 Description: Race in 'instant cancel' lock handling could lead to such locks
595 never to be granted in case of SMP MDS
596 Details : Do not destroy not yet granted but cbpending locks in
600 Frequency : replay/resend of open
602 Description: non null lock assetion failure in mds_intent_policy
603 Details : Trying to replay/resend lockless open requests resulted in
604 mds_open() returning 0 with no lock. Now it sets a flag if
605 a lock is going to be returned.
607 Severity : enhancement
609 Description: Checksum enhancements
610 Details : New checksum enhancements allow for resending RPCs that failed
613 Severity : enhancement
615 Description: Tunables on number of dirty pages in cacche
616 Details : Allow to set limit on number of dirty pages cached.
621 Description: client crash on unmount - lock still has references
622 Details : In some error handling cases it was possible to leak a lock
623 reference on a client while accessing a file. This was not
624 harmful to the client during operation, but would cause the
625 client to crash when the filesystem is unmounted.
628 Frequency : specific case, rare
630 Description: ETXTBSY on mds though file not in use by client
631 Details : ETXTBSY is no longer incorrectly returned when attempting to
632 chmod or chown a directory that the user previously tried to
633 execute or a currently-executing binary.
636 Frequency : extremely rare except on liblustre-based clients
638 Description: Lustre space not freed when files are deleted
639 Details : Clean up open-unlinked files after client eviction. Previously
640 the unlink was skipped and the files remained as orphans.
645 Description: OST failure "would be an LBUG" in waiting_locks_callback()
646 Details : In some cases it was possible to send a blocking callback to
647 a client doing a glimpse, even though that client didn't get
648 a lock granted. When the glimpse lock is cancelled on the OST
649 the freed lock is left on the waiting list and corrupted the list.
652 Frequency : all core dumps
654 Description: Broke core dumps to lustre
655 Details : Negative dentry may be unhashed if parent does not have UPDATE
656 lock, but some callers, e.g. do_coredump, expect dentry to be
657 hashed after successful create, hash it in ll_create_it.
659 ------------------------------------------------------------------------------
661 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
663 * Support for kernels:
664 2.6.9-42.0.2.EL (RHEL 4)
666 2.4.21-40.EL (RHEL 3)
667 2.6.12.6 vanilla (kernel.org)
671 Frequency : always on RHEL 3
673 Description: Number of open files grows over time
674 Details : The number of open files grows over time, whether or not
675 Lustre is started. This was due to a filp leak introduced
676 by one of our kernel patches.
678 ------------------------------------------------------------------------------
680 2006-08-20 Cluster File Systems, Inc. <info@clusterfs.com>
682 * Support for kernels:
685 2.4.21-40.EL (RHEL 3)
686 2.6.12.6 vanilla (kernel.org)
691 Bugzilla : 5719, 9635, 9792, 9684
692 Description: OST (or MDS) trips assertions in (re)connection under heavy load
693 Details : If a server is under heavy load and cannot reply to new
694 connection requests before the client resends the (re)connect,
695 the connection handling code can behave badly if two service
696 threads are concurrently handing separate (re)connections from
697 the same client. Add better locking to the connection handling
698 code, and ensure that only a single connection will be processed
699 for a given client UUID, even if the lock is dropped.
701 Severity : enhancement
703 Description: add TCP zero-copy support to kernel
704 Details : Add support to the kernel TCP stack to allow zero-copy bulk
705 sends if the hardware supports scatter-gather and checksumming.
706 This allows socklnd to do client-write and server-read more
707 efficiently and reduce CPU utilization from skbuf copying.
710 Frequency : only if NFS exporting from client
712 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
713 Details : If setting attributes on a file created under NFS that had
714 never been opened it would be possible to oops the client
715 if the file had no objects.
719 Bugzilla : 9326, 10402, 10897
720 Description: client crash in ptlrpcd_wake() thread when sending async RPC
721 Details : It is possible that ptlrpcd_wake() dereferences a freed async
722 RPC. In rare cases the ptlrpcd thread alread processed the RPC
723 before ptlrpcd_wake() was called and the request was freed.
726 Frequency : always for liblustre
728 Description: liblustre client does MDS+OSTs setattr RPC for each write
729 Details : When doing a write from a liblustre client, the client
730 incorrectly issued an RPC to the MDS and each OST the file was
731 striped over in order to update the timestamps. When writing
732 with small chunks and many clients this could overwhelm the MDS
733 with RPCs. In all cases it would slow down the write because
734 these RPCs are unnecessary.
736 Severity : enhancement
738 Description: allow number of MDS service threads to be changed at module load
739 Details : It is now possible to change the number of MDS service threads
740 running. Adding "options mds mds_num_threads={N}" to the MDS's
741 /etc/modprobe.conf will set the number of threads for the next
742 time Lustre is restarted (assuming the "mds" module is also
743 reloaded at that time). The default number of threads will
744 stay the same, 32 for most systems.
749 Description: OST crash if filesystem is unformatted or corrupt
750 Details : If an OST is started on a device that has never been formatted
751 or if the filesystem is corrupt and cannot even mount then the
752 error handling cleanup routines would dereference a NULL pointer.
757 Description: NULL pointer deref in llap_from_page.
758 Details : get_cache_page_nowait can return a page with NULL (or otherwise
759 incorrect) mapping if the page was truncated/reclaimed while it was
760 searched for. Check for this condition and skip such pages when
761 doing readahead. Introduce extra check to llap_from_page() to
762 verify page->mapping->host is non-NULL (so page is not anonymous).
765 Frequency : Sometimes when using sys_sendfile
767 Description: "page not covered by a lock" warnings from ll_readpage
768 Details : sendfile called ll_readpage without right page locks present.
769 Now we introduced ll_file_sendfile that does necessary locking
770 around call to generic_file_sendfile() much like we do in
774 Frequency : with certain MDS communication failures at client mount time
776 Description: NULL pointer deref after failed client mount
777 Details : a client connection request may delayed by the network layer
778 and not be sent until after the PTLRPC layer has timed out the
779 request. If the client fails the mount immediately it will try
780 to clean up before the network times out the request. Add a
781 reference from the request import to the obd device and delay
782 the cleanup until the network drops the request.
785 Frequency : occasionally during client (re)connect
787 Description: assertion failure during client (re)connect
788 Details : processing a client connection request may be delayed by the
789 client or server longer than the client connect timeout. This
790 causes the client to resend the connection request. If the
791 original connection request is replied in this interval, the
792 client may trip an assertion failure in ptlrpc_connect_interpret()
793 which thought it would be the only running connect process.
796 Frequency : only with obd_echo servers and clients that are rebooted
798 Description: kernel BUG accessing uninitialized data structure
799 Details : When running an obd_echo server it did not start the ping_evictor
800 thread, and when a client was evicted an uninitialized data
801 structure was accessed. Start the ping_evictor in the RPC
802 service startup instead of the OBD startup.
804 Severity : enhancement
805 Bugzilla : 10193 (patchless)
806 Description: Remove dependency on various unexported kernel interfaces.
807 Details : No longer need reparent_to_init, exit_mm, exit_files,
808 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
811 Frequency : rare (only users of deprecated and unsupported LDAP config)
813 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
814 Details : LDAP apparently contains 'lustreName' attributes instead of
815 'name'. A simple remapping of the name is sufficient.
818 Frequency : rare (only with non-default dump_on_timeout debug enabled)
820 Description: waiting_locks_callback trips kernel BUG if client is evicted
821 Details : Running with the dump_on_timeout debug flag turned on makes
822 it possible that the waiting_locks_callback() can try to dump
823 the Lustre kernel debug logs from an interrupt handler. Defer
824 this log dumping to the expired_lock_main() thread.
826 Severity : enhancement
828 Description: Support NFS exporting on 2.6 kernels.
829 Details : Implement non-rawops metadata methods for NFS server to use without
830 changing NFS server code.
833 Frequency : very rare (synthetic metadata workload only)
835 Description: two racing renames might cause an MDS thread to deadlock
836 Details : Running the "racer" program may cause one MDS thread to rename
837 a file from being the source of a rename to being the target of
838 a rename at exactly the same time that another thread is doing
839 so, and the second thread has already enqueued these locks after
840 doing a lookup of the target and is trying to relock them in
841 order. Ensure that we don't try to re-lock the same resource.
844 Frequency : only very large systems with liblustre clients
846 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
847 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
848 all OSTs in parallel. This allows the eviction of stale liblustre
849 clients to proceed much faster than if they were done in series,
850 and also offers similar improvements for other set_info RPCs.
855 Description: excessive CPU usage during initial read phase on client
856 Details : During the initial read phase on a client, it would agressively
857 retry readahead on the file, consuming too much CPU and impacting
858 performance (since 1.4.5.8). Improve the readahead algorithm
859 to avoid this, and also improve some other common cases (read
860 of small files in particular, where "small" is files smaller than
861 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
866 Description: MDS crash when receiving packet with unknown intent.
867 Details : Do not LBUG in unknown intent case, just return -EFAULT
869 Severity : enhancement
870 Bugzilla : 9293, 9385
871 Description: MDS RPCs are serialised on client. This is unnecessary for some.
872 Details : Do not serialize getattr (non-intent version) and statfs.
875 Frequency : occasional, when OST network is overloaded/intermittent
877 Description: client evicted by OST after bulk IO timeout
878 Details : If a client sends a bulk IO request (read or write) the OST
879 may evict the client if it is unresposive to its data GET/PUT
880 request. This is incorrect if the network is overloaded (takes
881 too long to transfer the RPC data) or dropped the OST GET/PUT
882 request. There is no need to evict the client at all, since
883 the pinger and/or lock callbacks will handle this, and the
884 client can restart the bulk request.
887 Frequency : Always when mmapping file with no objects
889 Description: client crashes when mmapping file with no objects
890 Details : Check that we actually have objects in a file before doing any
891 operations on objects in ll_vm_open, ll_vm_close and
897 Description: Request leak when working with deleted CWD
898 Details : Introduce advanced request refcount tracking for requests
899 referenced from lustre intent.
901 Severity : Enhancement
903 Description: Cache open file handles on client.
904 Details : MDS now will return special lock along with openhandle, if
905 requested and client is allowed to hold openhandle, even if unused,
906 until such a lock is revoked. Helps NFS a lot, since NFS is opening
907 closing files for every read/write openration.
909 Severity : Enhancement
911 Description: Cache open negative dentries on client when possible.
912 Details : Guard negative dentries with UPDATE lock on parent dir, drop
913 negative dentries on lock revocation.
918 Description: Remounting a client read-only wasn't possible with a zconf mount
919 Details : It wasn't possible to remount a client read-only with llmount.
921 Severity : enhancement
922 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
923 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
924 MPICH is included to add Lustre-specific ADIO interfaces.
925 This is based closely on the UFS ADIO layer and only differs
926 in file creation, in order to allow the OST striping to be set.
927 This is user-contributed code and not supported by CFS.
932 Description: extended inode attributes (immutable, append-only) work improperly
933 when 2.4 and 2.6 kernels are used on client/server or vice versa
934 Details : Introduce kernel-independent values for these flags.
936 Severity : enhancement
939 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
940 Details : Many of the /proc/ tunables can only be tuned at a megabyte
941 granularity. Now, Fractional MB granularity is be supported,
942 this is very useful for low memory system.
944 Severity : enhancement
946 Description: Getattr by fid
947 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
948 locks, avoids extra getattr rpc requests to MDS, allows '/' to
949 have locks and avoids getattr rpc requests for it on every stat.
952 Frequency : Always, for filesystems larger than 2TB
954 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
955 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
956 filesystems larger than 2TB to be mounted with mballoc enabled.
959 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
961 Description: filesystem corruption for non-standard kernels and very large OSTs
962 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
963 filesystems larger than 2TB is mounted then the kernel will
964 silently corrupt the start of the filesystem. CONFIG_LBD is
965 enabled for all CFS-supported kernels, but the possibility of
966 this happening with a modified kernel config exists.
968 Severity : enhancement
970 Description: add client O_DIRECT support for 2.6 kernels
971 Details : It is now possible to do O_DIRECT reads and writes to files
972 in the Lustre client mountpoint on 2.6 kernel clients.
974 Severity : enhancement
976 Description: parallel glimpse, setattr, statfs, punch, destroy requests
977 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
978 parallel, not waiting for response from every OST before sending
979 a rpc to the next OST.
984 Description: setattr vs write race when updating file timestamps
985 Details : Client processes that update a file timestamp into the past
986 right after writing to the file (e.g. tar) it is possible that
987 the updated file modification time can be reset to the current
988 time due to a race between processing the setattr and write RPC.
990 Severity : enhancement
992 Description: Bring 'lfs find' closer in line with regular Linux find.
993 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
994 -print0 options and obtains all the needed info through the lustre
997 Severity : enhancement
999 Description: support up to 1024 configured devices on one node
1000 Details : change obd_dev array from statically allocated to dynamically
1001 allocated structs as they are first used to reduce memory usage
1006 Description: Flush dirty partially truncated pages during truncate
1007 Details : Immediatelly flush partially truncated pages in filter_setattr,
1008 this way we completely avoid having any pages in page cache on OST
1009 and can retire ugly workarounds during writes to flush such pages.
1014 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
1015 Details : protect inode from truncation within vfs_unlink() context
1016 just take a reference before calling vfs_unlink() and release it
1017 when parent's i_sem is free.
1020 Frequency : always, if extents are used on OSTs
1022 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
1023 Details : OSTs using the extents format would not zero the high 16 bits of
1024 the index physical block number. This is not a problem for any
1025 OST filesystems smaller than 16TB, and no kernels support ext3
1026 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
1027 new/modified files) and can be fixed for existing filesystems
1028 with e2fsprogs-1.39-cfs1.
1033 Description: import connection selection may be incorrect if timer wraps
1034 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
1035 import connections to be ignored if the 32-bit jiffies counter
1036 wraps. Use a 64-bit jiffies counter.
1039 Frequency : during server recovery
1041 Description: crash after server is denying duplicate export
1042 Details : If clients are resending connect requests to the server, the
1043 server refuses to allow a client to connect multiple times.
1044 Fixed a bug in the handling of this case.
1047 Frequency : very large clusters immediately after boot
1049 Description: LNET request buffers exhausted under heavy short-term load
1050 Details : If a large number of client requests are generated on a service
1051 that has previously never seen so many requests it is possible
1052 that the request buffer growth cannot keep up with the spike in
1053 demand. Instead of dropping incoming requests, they are held in
1054 the LND until the RPC service can accept more requests.
1057 Frequency : Sometimes during replay
1059 Description: Assertion failure in ll_local_open after replay.
1060 Details : If replay happened on an open request reply before we were able
1061 to set replay handler, reply will become not swabbed tripping the
1062 assertion in ll_local_open. Now we set the handler right after
1063 recognising of open request
1066 Frequency : very rare
1068 Description: kernel reports "badness in vsnprintf"
1069 Details : Reading from the "recovery_status" /proc file in small chunks
1070 may cause a negative length in lprocfs_obd_rd_recovery_status()
1071 call to vsnprintf() (which is otherwise harmless). Exit early
1072 if there is no more space in the output buffer.
1074 Severity : enhancement
1076 Description: clear OBD RPC statistics by writing to them
1077 Details : It is now possible to clear the OBD RPC statistics by writing
1078 to the "stats" file.
1083 Description: Client mtime is not the same on different clients after utimes
1084 Details : In some cases, the client was using the utimes() syscall on
1085 a file cached on another node. The clients now validate the
1086 ctime from the MDS + OSTs to determine which one is right.
1091 Description: Inability to activate failout mode
1092 Details : lconf script incorrectly assumed that in python string's numeric
1093 value is used in comparisons.
1096 Frequency : always with multiple stripes per file
1098 Description: Inefficient object allocation for mutli-stripe files
1099 Details : When selecting which OSTs to stripe files over, for files with
1100 a stripe count that divides evenly into the number of OSTs,
1101 the MDS is always picking the same starting OST for each file.
1102 Return the OST selection heuristic to the original design.
1107 Description: mount failures may take full timeout to return an error
1108 Details : Under some heavy load conditions it is possible that a
1109 failed mount can wait for the full obd_timeout interval,
1110 possibly several minutes, before reporting an error.
1111 Instead return an error as soon as the status is known.
1113 ------------------------------------------------------------------------------
1115 2006-02-14 Cluster File Systems, Inc. <info@clusterfs.com>
1117 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
1118 INTEROPERATE with older versions automatically. Please read the
1119 user documentation before upgrading any part of a live system.
1120 * WARNING: Lustre networking configuration changes are required with
1121 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
1124 * Support for kernels:
1125 2.6.9-22.0.2.EL (RHEL 4)
1126 2.6.5-7.244 (SLES 9)
1127 2.6.12.6 vanilla (kernel.org)
1130 Severity : enhancement
1131 Bugzilla : 7981/8208
1132 Description: Introduced Lustre Networking (LNET)
1133 Details : LNET is new networking infrastructure for Lustre, it includes
1134 a reorganized network configuration mode (see the user
1135 documentation for full details) as well as support for routing
1136 between different network fabrics. Lustre Networking Devices
1137 (LNDs) for the supported network fabrics have also been
1138 created for this new infrastructure.
1140 Severity : enhancement
1141 Description: Introduced Access control lists
1142 Details : clients can set ACLs on files and directories in order to have
1143 more fine-grained permissions than the standard Unix UGO+RWX.
1144 The MDS must be started with the "-o acl" mount option.
1146 Severity : enhancement
1147 Description: Introduced filesystem quotas
1148 Details : Administrators may now establish per-user quotas on the
1151 Severity : enhancement
1153 Description: Configuration change for the XT3
1154 The PTLLND is now used to run Lustre over Portals on the XT3
1155 The configure option(s) --with-cray-portals are no longer used.
1156 Rather --with-portals=<path-to-portals-includes> is used to
1157 enable building on the XT3. In addition to enable XT3 specific
1158 features the option --enable-cray-xt3 must be used.
1163 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
1164 Details : A race between allocating a new llcd and re-getting the llcd_lock
1165 allowed another thread to grab newly-allocated llcd.
1167 Severity : enhancement
1169 Description: 2.6 OST async journal commit and locking fix to improve performance
1170 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
1171 2.6 kernels are now async as they already were in 2.4 kernels so
1172 that they can commit concurrently with the network bulk transfer.
1173 For block-allocated files the filter allocation semaphore is held
1174 to avoid filesystem fragmentation during allocation. BKL lock
1175 removed for 2.6 xattr operations where it is no longer needed.
1180 Description: lconf incorrectly determined whether two IP networks could talk
1181 Details : In some more complicated routing and multiple-network
1182 configurations, lconf will avoid trying to make a network
1183 connection to a disjoint part of the IP space. It was doing the
1184 math incorrectly for one set of cases.
1189 Description: Fix for potential infinite loop processing records in an llog.
1190 Details : If an llog record is corrupted/zeroed, it is possible to loop
1191 forever in llog_process(). Validate the llog record length
1192 and skip the remainder of the block on error.
1195 Frequency : occasional (liblustre only)
1197 Description: liblustre could not open files whose last component is a symlink
1198 Details : sysio_path_walk() would incorrectly pass the open intent to
1199 intermediate path components.
1202 Frequency : rare (liblustre only with non-standard tuning)
1203 Bugzilla : 7201 (7350)
1204 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
1205 Details : llu_lookup_finish_locks() tries to set lock data on a lock
1206 after it has been released, only do this for referenced locks
1208 Severity : enhancement
1210 Description: specifying an (invalid) directory default stripe_size of -1
1211 would reset the directory default striping
1212 Details : stripe_size -1 was used internally to signal directory stripe
1213 removal, now use "all default" to signal dir stripe removal
1214 as a directory striping of "all default" is not useful
1217 Frequency : common for large clusters running liblustre clients
1219 Description: doing an ls when liblustre clients are running is slow
1220 Details : sending a glimpse AST to a liblustre client waits for every AST
1221 to time out, as liblustre clients will not respond. Since they
1222 cannot cache data we refresh the OST lock LVB from disk instead.
1224 Severity : enhancement
1226 Description: doing an ls at the same time as file IO can be slow
1227 Details : enqueue and other "small" requests can be blocked behind many
1228 large IO requests. Create a new OST IO portal for non-IO
1229 requests so they can be processed faster.
1232 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
1234 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
1235 created file with mode 000
1236 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
1237 allow an ftruncate() as a non-root user to a file with mode 000.
1238 Lustre now respects this flag to disable mode checks when
1239 truncating a file owned by the user
1242 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
1245 Description: Revoking locks from clients that went dead or catatonic might take
1247 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
1248 cancellation of such locks instant on servers without waiting for
1249 any reply from clients. Clients drops these locks when cancel
1250 notification from server is received without replying.
1253 Frequency : liblustre-only, when liblustre client dies or becomes busy
1255 Description: Doing ls on Linux clients can take a long time with active
1257 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
1258 granting such locks to it in the first place if possible. Locks
1259 are taken by proxy on the OST during the read or write and
1260 dropped immediately afterward. Add connect flags handling, do
1261 not grant locks to liblustre clients for glimpse ASTs.
1263 Severity : enhancement
1265 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
1266 Details : Existing read-ahead algorithm is tuned for the case of streamlined
1267 sequential reads and behaves badly with applications doing random
1268 reads. Improve it by reading ahead at least read region, and
1269 avoiding excessive large RPC for small reads.
1271 Severity : enhancement
1273 Description: Creating more than 1000 files for a single job may cause a load
1274 imbalance on the OSTs if there are also a large number of OSTs.
1275 Details : qos_prep_create() uses an OST index reseed value that is an
1276 even multiple of the number of available OSTs so that if the
1277 reseed happens in the middle of the object allocation it will
1278 still utilize the OSTs as uniformly as possible.
1283 Description: OST or MDS may oops in ping_evictor_main()
1284 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
1285 but doesn't restart at beginning of obd_exports_timed list
1288 Severity : enhancement
1290 Description: improve by-nid export eviction on the MDS and OST
1291 Details : allow multiple exports with the same NID to be evicted at one
1292 time without re-searching the exports list.
1295 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
1297 Description: MDS may oops in groups_free()
1298 Details : in rare race conditions a newly allocated group_info struct is
1299 freed again, and this can be NULL. The 2.4 compatibility code
1300 for groups_free() checked for a NULL pointer, but 2.6 did not.
1303 Frequency : common for liblustre clients doing little filesystem IO
1304 Bugzilla : 9352, 7313
1305 Description: server may evict liblustre clients accessing contended locks
1306 Details : if a client is granted a lock or receives a completion AST
1307 with a blocking AST already set it would not reply to the AST
1308 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
1311 Frequency : lfs setstripe, only systems with more than 160 OSTs
1313 Description: unable to set striping with a starting offset beyond OST 160
1314 Details : llapi_create_file() incorrectly limited the starting stripe
1315 index to the maximum single-file stripe count.
1318 Frequency : LDAP users only
1320 Description: lconf did not handle in-kernel recovery with LDAP properly
1321 Details : lconf/LustreDB get_refs() is searching the wrong namespace
1323 Severity : enhancement
1325 Description: bind OST threads to NUMA nodes to improve performance
1326 Details : all OST threads are uniformly bound to CPUs on a single NUMA
1327 node and do their allocations there to localize memory access
1329 Severity : enhancement
1331 Description: llmount can determine client NID directly from Myrinet (GM)
1332 Details : the client NID code from gmnalnid was moved directly into
1333 llmount, removing the need to use this or specifying the
1334 client NID explicitly when mounting GM clients with zeroconf
1337 Frequency : if client is started with down MDS
1339 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
1340 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
1341 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
1342 ptlrpc_import_delayed_req() because we didn't check if the
1343 request was interrupted, and we also didn't break out of the
1344 event loop if there was no timeout
1349 Description: data loss during non-page-aligned writes to a single file from
1350 both multiple nodes and multiple threads on one node at same time
1351 Details : updates to KMS and lsm weren't protected by common lock. Resulting
1352 inconsistency led to false short-reads, that were cached and later
1353 used by ->prepare_write() to fill in partially written page,
1354 leading to data loss.
1357 Frequency : always, if lconf --abort_recovery used
1359 Description: lconf --abort_recovery fails with 'Operation not supported'
1360 Details : lconf was attempting to abort recovery on the MDT device and not
1363 Severity : enhancement
1365 Description: remove cleanup logs
1366 Details : replace lconf-generated cleanup logs with lustre internal
1367 cleanup routines. Eliminates the need for client-cleanup and
1370 Severity : enhancement
1372 Description: add support for EAs (user and system) on lustre filesystems
1373 Details : it is now possible to store extended attributes in the Lustre
1374 client filesystem, and with the user_xattr mount option it
1375 is possible to allow users to store EAs on their files also
1377 Severity : enhancement
1379 Description: Add possibility (config option) to show minimal available OST free
1381 Details : When compiled with --enable-mindf configure option, statfs(2)
1382 (and so, df) will return least minimal free space available from
1383 all OSTs as amount of free space on FS, instead of summary of
1384 free spaces of all OSTs.
1386 Severity : enhancement
1388 Description: do not expand extent locks acquired on OST-side
1389 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
1390 by server: they are not cached anyway.
1393 Frequency : when mmap is used/binaries executed from Lustre
1395 Description: Unmmap pages before throwing them away from read cache.
1396 Details : llap_shrink cache now attempts to unmap pages before discarding
1397 them (if unmapping failed - do not discard). SLES9 kernel has
1398 extra checks that trigger if this unmapping is not done first.
1403 Description: lconf didn't resolve symlinks before checking to see whether a
1404 given mountpoint was already in use
1407 Frequency : when migrating failover services
1408 Bugzilla : 6395, 9514
1409 Description: When migrating a subset of services from a node (e.g. failback
1410 from a failover service node) the remaining services would
1411 time out and evict clients.
1412 Details : lconf --force (implied by --failover) sets the global obd_timeout
1413 to 5 seconds in order to quickly disconnect, but this caused
1414 other RPCs to time out too quickly. Do not change the global
1415 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
1417 Severity : enhancement
1418 Frequency : if MDS is started with down OST
1419 Bugzilla : 9439,5706
1420 Description: Allow startup/shutdown of an MDS without depending on the
1421 availability of the OSTs.
1422 Details : Asynchronously call mds_lov_synchronize during MDS startup.
1423 Add appropriate locking and lov-osc refcounts for safe
1424 cleaning. Add osc abort_inflight calls in case the
1425 synchronize never started.
1428 Frequency : occasional (Cray XT3 only)
1430 Description: root not authorized to access files in CRAY_PORTALS environment
1431 Details : The client process capabilities were not honoured on the MDS in
1432 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
1433 been accessed by an authorized user then root was able to access
1434 the file on the local client also. The root user capabilities
1435 are now allowed on the MDS, as this environment has secure UID.
1438 Frequency : occasional
1440 Description: ldiskfs "too long searching" message happens too often
1441 Details : A debugging message (otherwise harmless) prints too often on
1442 the OST console. This has been reduced to only happen when
1443 there are fragmentation problems on the filesystem.
1448 Description: Division by zero in statfs when all OSCs are inactive
1449 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
1450 lov_statfs divides by value returned by lov_get_stripecnt().
1454 Bugzilla : 9489, 3273
1455 Description: First write from each client to each OST was only 4kB in size,
1456 to initialize client writeback cache, which caused sub-optimal
1457 RPCs and poor layout on disk for the first writen file.
1458 Details : Clients now request an initial cache grant at (re)connect time
1459 and so that they can start streaming writes to the cache right
1460 away and always do full-sized RPCs if there is enough data.
1461 If the OST is rebooted the client also re-establishes its grant
1462 so that client cached writes will be honoured under the grant.
1467 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
1468 Details : Now I/O RPCs go to different portal number and (presumably) fast
1469 lock requests (and glimses) and other RPCs get their own service
1470 threads pool that should be able to service those RPCs
1473 Severity : enhancement
1475 Description: Ability to exchange lustre version between client and servers and
1476 issue warnings at client side if client is too old. Also for
1477 liblustre clients there is ability to refuse connection of too old
1479 Details : New 'version' field is added to connect data structure that is
1480 filled with version info. That info is later checked by server and
1484 Frequency : rare, liblustre only.
1485 Bugzilla : 9296, 9581
1486 Description: Two simultaneous writes from liblustre at offset within same page
1487 might proceed at the same time overwriting eachother with stale
1489 Details : I/O lock withing llu_file_prwv was released too early, before data
1490 actually was hitting the wire. Extended lock-holding time until
1491 server acknowledges receiving data.
1494 Frequency : extremely rare. Never observed in practice.
1496 Description: avoid generating lustre_handle cookie of 0.
1497 Details : class_handle_hash() generates handle cookies by incrementing
1498 global counter, and can hit 0 occasionaly (this is unlikely, but
1499 not impossible, because initial value of cookie counter is
1500 selected randonly). Value of 0 is used as a sentinel meaning
1501 "unassigned handle" --- avoid it. Also coalesce two critical
1502 sections in this function into one.
1504 Severity : enhancement
1506 Description: allow liblustre clients to delegate truncate locking to OST
1507 Details : To avoid overhead of locking, liblustre client instructs OST to
1508 take extent lock in ost_punch() on client's behalf. New connection
1509 flag is added to handle backward compatibility.
1511 Severity : enhancement
1512 Bugzilla : 4928, 7341, 9758
1513 Description: allow number of OST service threads to be specified
1514 Details : a module parameter allows the number of OST service threads
1515 to be specified via "options ost ost_num_threads={N}" in the
1516 OSS's /etc/modules.conf or /etc/modprobe.conf.
1520 Bugzilla : 6146, 9635, 9895
1521 Description: servers crash with bad pointer in target_handle_connect()
1522 Details : In rare cases when a client is reconnecting it was possible that
1523 the connection request was the last reference for that export.
1524 We would temporarily drop the export reference and get a new
1525 one, but this may have been the last reference and the export
1526 was just destroyed. Get new reference before dropping old one.
1528 Severity : enhancement
1529 Frequency : if client is started with failover MDS
1531 Description: Allow multiple MDS hostnames in the mount command
1532 Details : Try to read the configuration from all specified MDS
1533 hostnames during a client mount in case the "primary"
1536 Severity : enhancement
1538 Description: Stop sending data to evicted clients as soon as possible.
1539 Details : Check if the client we are about to send or are sending data to
1540 was evicted already. (Check is done every second of waiting,
1541 for which l_wait_event interface was extended to allow checking
1542 of exit condition at specified intervals).
1545 Frequency : rare, normally only when NFS exporting is done from client
1547 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
1549 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
1552 Frequency : always, if srand() is called before liblustre initialization
1554 Description: Liblustre uses system PRNG disturbing its usage by user application
1555 Details : Introduce internal to lustre fast and high-quality PRNG for
1556 lustre usage and make liblustre and some other places in generic
1557 lustre code to use it.
1559 Severity : enhancement
1560 Bugzilla : 9477, 9557, 9870
1561 Description: Verify that the MDS configuration logs are updated when xml is
1562 Details : Check if the .xml configuration logs are newer than the config
1563 logs stored on the MDS and report an error if this is the case.
1564 Request --write-conf, or allow starting with --old_conf.
1566 Severity : enhancement
1568 Description: Handle symlinks in the path when checking if Lustre is mounted.
1569 Details : Resolve intermediate symlinks when checking if a client has
1570 mounted a filesystem to avoid duplicate client mounts.
1575 Description: lconf can hit an error exception but still return success.
1576 Details : The lconf command catches the Command error exception at the top
1577 level script context and will exit with the associated exit
1578 status, but doesn't ensure that this exit status is non-zero.
1583 Description: failure of ptlrpc thread startup can cause oops
1584 Details : Starting a ptlrpc service thread can fail if there are a large
1585 number of threads or the server memory is very fragmented.
1586 Handle this without oopsing.
1589 Frequency : always, only if liblustre and non-default acceptor port was used
1591 Description: liblustre cannot connect to servers with non-default acceptor port
1592 Details : tcpnal_set_default_params() was not called and was therefore
1593 ignoring the environment varaible TCPNAL_PORT, as well as other
1594 TCPNAL_ environment variables
1599 Description: two objects could be created on the same OST for a single file
1600 Details : If an OST is down, in some cases it was possible to create two
1601 objects on a single OST for a single file. No problems other
1602 than potential performance impact and spurious error messages.
1606 Bugzilla : 5681, 9562
1607 Description: Client may oops in ll_unhash_aliases
1608 Details : Client dcache may become inconsistent in race condition.
1609 In some cases "getcwd" can fail if the current directory is
1615 Description: Inode refcounting problems in NFS export code
1616 Details : link_raw functions used to call d_instantiate without obtaining
1617 extra inode reference first.
1621 Bugzilla : 9942, 9903
1622 Description: Referencing freed requests leading to crash, memleaks with NFS.
1623 Details : We used to require that call to ll_revalidate_it was always
1624 followed by ll_lookup_it. Also with revalidate_special() it is
1625 possible to call ll_revalidate_it() twice for the same dentry
1626 even if first occurence returned success. This fix changes semantic
1627 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
1628 reference on a request referred from the intent.
1629 ll_intent_release() then releases such a request.
1632 Frequency : rare, normally benchmark loads only
1634 Description: unlinked inodes were kept in memory on the client
1635 Details : If a client is repeatedly creating and unlinking files it
1636 can accumulate a lot of stale inodes in the inode slab cache.
1637 If there is no other client load running this can cause the
1638 client node to run out of memory. Instead flush old inodes
1639 from client cache that have the same inode number as a new inode.
1642 Frequency : SLES9 2.6.5 kernel and long filenames only
1643 Bugzilla : 9969, 10379
1644 Description: utime reports stale NFS file handle
1645 Details : SLES9 uses out-of-dentry names in some cases, which confused
1646 the lustre dentry revalidation. Change it to always use the
1650 Frequency : rare, unless heavy write-truncate concurrency is continuous
1651 Bugzilla : 4180, 6984, 7171, 9963, 9331
1652 Description: OST becomes very slow and/or deadlocked during object unlink
1653 Details : filter_destroy() was holding onto the parent directory lock
1654 while truncating+unlinking objects. For very large objects this
1655 may block other threads for a long time and slow overall OST
1656 responsiveness. It may also be possible to get a lock ordering
1657 deadlock in this case, or run out of journal credits because of
1658 the combined truncate+unlink. Solution is to do object truncate
1659 first in one transaction without parent lock, and then do the
1660 final unlink in a new transaction with the parent lock. This
1661 reduces the lock hold time dramatically.
1664 Frequency : rare, 2.4 kernels only
1666 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
1667 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
1668 before unmounting their filesystem in order to avoid deadlock.
1669 The kernel_locked() function in 2.4 kernels only checks whether
1670 the kernel lock is held, not whether it is this process that is
1671 holding it as 2.6 kernels do.
1676 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
1677 Details : The client ptlrpc code may be trying to reconnect to a down
1678 server before a previous connection attempt has timed out.
1679 Increase the reconnect interval to be longer than the connection
1680 timeout interval to avoid sending duplicate connections to
1684 Frequency : echo_client brw_test command
1686 Description: fix echo_client to work with OST preallocated code
1687 Details : OST preallocation code (5137) didn't take echo_client IO path
1688 into account: echo_client calls filter methods outside of any
1689 OST thread and, hence, there is no per-thread preallocated
1690 pages and buffers to use. Solution: hijack pga pages for IO. As
1691 a byproduct, this avoids unnecessary data copying.
1695 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
1696 Description: Client can oops in mdc_commit_close() after open replay
1697 Details : It was possible for the MDS to return an open request with no
1698 transaction number in mds_finish_transno() if the client was
1699 evicted, but without actually returning an error. Clients
1700 would later try to replay that open and may trip an assertion
1701 Simplify the client close codepath, and always return an error
1702 from the MDS in case the open is not successful.
1705 Frequency : rare, 2.6 OSTs only
1707 Description: OST may deadlock under high load on fragmented files
1708 Details : If there was a heavy load and highly-fragmented OST filesystems
1709 it was possible to have all the OST threads deadlock waiting on
1710 allocation of biovecs, because the biovecs were not released
1711 until the entire RPC IO was completed. Instead, release biovecs
1712 as soon as they are complete to ensure forward IO progress.
1714 Severity : enhancement
1716 Description: Support for specifying external journal device at mount
1717 Details : If an OST or MDS device is formatted with an external journal
1718 device, this device major/minor is stored in the ext3 superblock
1719 and may not be valid for failover. Allow detecting and
1720 specifying the external journal at mount time.
1725 Description: Mounting an MDS with pending unlinked files may cause oops
1726 Details : target_finish_recovery() calls mds_postrecov() which returned
1727 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
1728 considers this an error and immediately begins cleaning up the
1729 lov, just after starting the mds_lov process
1731 Severity : enhancement
1733 Description: Implement 'lfs df' to report actual free space on per-OST basis
1734 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
1735 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
1736 usage of objects; '-h' to report in human readable format.
1738 ------------------------------------------------------------------------------
1740 2005-08-26 Cluster File Systems, Inc. <info@clusterfs.com>
1747 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
1748 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
1749 at startup during orphan unlinking. Instead, skip buddy update
1750 before setup, as it will be regenerated after recovery is complete.
1755 Description: If an OST is inactive, its locks might reference stale inodes.
1756 Details : lov_change_cbdata() must iterate over all namespaces, even if
1757 they are inactive to clear inode references from the lock.
1759 Severity : enhancement
1760 Frequency : occasional, if non-standard max_dirty_mb used
1762 Description: Client will block write RPCs if not enough grant
1763 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
1764 then the client will block writes while waiting for another RPC
1765 to complete instead of consuming its dirty limit. With change
1766 we get improved performance when max_dirty_mb is small.
1768 Severity : enhancement
1769 Bugzilla : 3389, 6253
1770 Description: Add support for supplementary groups on the MDS.
1771 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
1772 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
1773 lookups for user supplementary groups into a cache.
1777 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
1778 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
1779 for liblustre O_EXCL is enforced by MDS.
1783 Description: readdir never returns NULL in liblustre.
1784 Details : Corrected llu_iop_getdirentries logic, to return offset of next
1785 dentry in struct dirent.
1789 Frequency : liblustre only, depends on application IO pattern
1790 Description: liblustre clients evicted if not contacting servers
1791 Details : Don't put liblustre clients into the ping_evictor list, so
1792 they will not be evicted by the pinger ever.
1794 Severity : enhancement
1796 Description: Add ability to evict clients by NID from MDS.
1797 Details : By echoing "nid:$NID" string into
1798 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
1799 $NID would be instantly evicted from this MDS and from all active
1800 OSTs connected to it.
1804 Description: Do not query file size twice, somewhat slowing stat(2) calls.
1805 Details : lookup_it_finish() used to query file size from OSTs that was not
1810 Description: service threads change working directory to that of init
1811 Details : Starting lustre service threads may pin the working directory
1812 of the parent thread, making that filesystem busy. Threads
1813 now change to the working directory of init to avoid this.
1817 Frequency : during shutdown only
1818 Description: shutdown with a failed MDS or OST can cause unmount to hang
1819 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
1824 Frequency : 2.6 only
1825 Description: chmod/chown may include an extra supplementary group
1826 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
1827 supplementary group and if none is specified this is used.
1830 Bugzilla : 5479 (6816)
1832 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
1833 Details : If lookup is in progress on a file that is unlinked we might try
1834 to revalidate the inode and fail in revalidate after lookup is
1835 complete and ll_file_open() enqueues the open again but
1836 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
1839 Frequency : always, if lconf --abort_recovery used
1841 Description: lconf --abort_recovery fails with 'Operation not supported'
1842 Details : lconf was attempting to abort recovery on the MDT device and not
1845 ------------------------------------------------------------------------------
1847 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
1852 Frequency : rare (only unsupported configurations with a node running as an
1854 Bugzilla : 6514, 5137
1855 Description: Mounting a Lustre file system on a node running as an OST could
1857 Details : OSTs now preallocates memory needed to write out data at
1858 startup, instead of when needed, to avoid having to
1859 allocate memory in possibly low memory situations.
1860 Specifically, if the file system is mounted on on OST,
1861 memory pressure could force it to try to write out data,
1862 which it needed to allocate memory to do. Due to the low
1863 memory, it would be unable to do so and the node would
1864 become unresponsive.
1866 Severity : enhancement
1868 Description: Addition of lconf --service command line option
1869 Details : lconf now accepts a '--service <arg>' option, which is
1870 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
1872 Severity : enhancement
1874 Description: Failover mode is now the default for OSTs.
1875 Details : By default, OSTs will now run in failover mode. To return to
1876 the old behaviour, add '--failout' to the lmc line for OSTs.
1878 Severity : enhancement
1880 Description: Health checks are now provided for MDS and OSTs
1881 Details : Additional detailed health check information on MSD and OSTs
1882 is now provided through the procfs health_check value.
1885 Frequency : occasional, depends on IO load
1887 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
1888 after numerous create/delete cycles
1889 Details : The ext3 inode allocation policy would not allocate new inodes
1890 very well on the OSTs because there are no new directories
1891 being created. Instead we look for groups with free space if
1892 the parent directories are nearly full.
1897 Description: Network or server problems during mount may cause partially
1898 mounted clients instead of returning an error.
1899 Details : The config llog parsing code may overwrite the error return
1900 code during mount error handling, returning success instead
1906 Description: MDS can fail to allocate large reply buffers
1907 Details : After long uptimes the MDS can fail to allocate large reply
1908 buffers (e.g. zconf client mount config records) due to memory
1909 fragmentation or consumption by the buffer cache. Preallocate
1910 some large reply buffers so that these replies can be sent even
1911 under memory pressure.
1915 Frequency : rare (liblustre)
1916 Description: fsx running with liblustre complained that using truncate() to
1917 extend the file doesn't work. This patch corrects that issue.
1918 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
1919 ATTR_SIZE and lsm use in llu_setattr_raw.
1923 Frequency : rare, only 2.6 kernels
1924 Description: Unusual file access patterns on the MDS may result in inode
1925 data being lost in very rare circumstances.
1926 Details : Bad interaction between the ea-in-inode patch and the "no-read"
1927 code in the 2.6 kernel caused the inode and/or EA data not to
1928 be read from disk, causing single-file corruption.
1932 Frequency : rare, only 2.6 filesystems using extents
1933 Description: Heavy concurrent write and delete load may cause data corruption.
1934 Details : It was possible under high-load situations to have an extent
1935 metadata block in the block device cache from a just-unlinked
1936 file overwrite a newly-allocated data block. We now unmap any
1937 metadata buffers that alias just-allocated data blocks.
1941 Frequency : filesystems with default stripe_count larger than 77
1942 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
1943 Details : lconf specifies an inode size of 4096 bytes when the default
1944 stripe_count is larger than 77. This conflicts with the default
1945 inode density of 1 per 4096 bytes. Allocate smaller inodes in
1946 this case to avoid pinning too much memory for large EAs.
1948 ------------------------------------------------------------------------------
1950 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
1955 Frequency : rare (extremely heavy IO load with hundreds of clients)
1957 Description: Client is evicted, gets IO error writing to file
1958 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
1959 caused clients to be evicted for AST timeouts. The fixes in
1960 bug 5192 mean we no longer need to have such short AST timeouts
1961 so ldlm_timeout has been increased.
1964 Frequency : occasional during --force or --failover shutdown under load
1965 Bugzilla : 5949, 4834
1966 Description: Server oops/LBUG if stopped with --force or --failover under load
1967 Details : a collection of import/export refcount and cleanup ordering
1968 issues fixed for safer force cleanup
1971 Frequency : only filesystems larger than 120 OSTs
1972 Bugzilla : 5990, 6223
1973 Description: lfs getstripe would oops on a very large filesystem
1974 Details : lov_getconfig used kfree on vmalloc'd memory
1977 Frequency : only filesystems exporting via NFS to Solaris 10 clients
1978 Bugzilla : 6242, 6243
1979 Description: reading from files that had been truncated to a non-zero size
1980 but never opened returned no data
1981 Details : ll_file_read() reads zeros from no-object files to EOF
1986 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
1987 Details : There's little harm in aborting MDS/OSS recovery and letting it
1988 try again, so I removed the LASSERT and return an error instead.
1990 Severity : enhancement
1992 Description: New debugging infrastructure for tracking down data corruption
1993 Details : The I/O checksum code was replaced to: (a) control it at runtime,
1994 (b) cover more of the client-side code path, and (c) try to narrow
1995 down where problems occurred
1999 Bugzilla : 3819, 4364, 4397, 6313
2000 Description: Racing close and eviction MDS could cause assertion in mds_close
2001 Details : It was possible to get multiple mfd references during close and
2002 client eviction, leading to one thread referencing a freed mfd.
2004 Severity: : enhancement
2005 Bugzilla : 3262, 6359
2006 Description: Attempts to reconnect to servers are now more aggressive.
2007 Details : This builds on the enhanced upcall-less recovery that was added
2008 in 1.4.2. When trying to reconnect to servers, clients will
2009 now try each server in the failover group every 10 seconds. By
2010 default, clients would previously try one server every 25 seconds.
2015 Description: After recovery, certain operations trigger a failed
2016 assertion on a client.
2017 Details : Failing over an mds, using lconf -d --failover, while a
2018 client was doing a readdir() call would cause the client to
2019 LBUG after recovery completed and the readdir() was resent.
2021 Severity : enhancement
2023 Description: Default groups are now added by lconf
2024 Details : You can now run lconf --group <servicename> without having to
2025 manually add groups with lmc.
2028 Frequency : occasional
2030 Description: Nodes with an elan id of 0 trigger a failed assertion
2033 Frequency : always when accessing e.g. tty/console device nodes
2035 Description: tty and some other devices nodes cannot be used on lustre
2036 Details : file's private_data field is used by device data and lustre
2037 values in there got lost. New field was added to struct file to
2038 store fs-specific private data.
2041 Frequency : when exporting Lustre via NFS
2043 Description: NFSD failed occasionally when looking up a path component
2044 Details : NFSD is looking up ".." which was broken in ext3 directories
2045 that had grown large enough to become hashed.
2048 Frequency : Clusters with multiple interfaces not on the same subnet
2050 Description: Nodes will repeatedly try to reconnect to an interface which it
2051 cannot reach and report an error to the log.
2052 Details : Extra peer list entries will be created by lconf with some peers
2053 unreachable. lconf now validates the peer before adding it.
2056 Frequency : Only if a default stripe is set on the filesystem root.
2058 Description: Setting a default stripe on the filesystem root prevented the
2059 filesystem from being remounted.
2060 Details : The client was sending extra request flags in the root getattr
2061 request and did not allocate a reply buffer for the dir EA.
2064 Frequency : occasional, higher if lots of files are accessed by one client
2065 Bugzilla : 6159, 6097
2066 Description: Client trips assertion regarding lsm mismatch/magic
2067 Details : While revalidating inodes the VFS looks up inodes with ifind()
2068 and in rare cases can find an inode that is being freed.
2069 The ll_test_inode() code will free the lsm during ifind()
2070 when it finds an existing inode and then the VFS later attaches
2071 this free lsm to a new inode.
2075 Bugzilla : 6422, 7030
2076 Description: MDS deadlock between mkdir and client eviction
2077 Details : Creating a new file via mkdir or mknod (starting a transaction
2078 and getting the ns lock) can deadlock with client eviction
2079 (gets ns lock and trying to finish a synchronous transaction).
2082 Frequency : occasional
2083 Description: While starting a server, the fsfilt_ext3 module could not be
2085 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
2086 kernels. Previously, lconf would still use the ext3 name
2087 when trying to load modules. Now, it will correctly use
2088 ext3 on 2.4 and ldiskfs on 2.6.
2090 Severity : enhancement
2091 Description: The default stripe count has been changed to 1
2092 Details : The interpretation of the default stripe count (0, to lfs
2093 or lmc) has been changed to mean striping across a single
2094 OST, rather than all available. For general usage we have
2095 found a stripe count of 1 or 2 works best.
2097 Severity : enhancement
2098 Description: Add support for compiling against Cray portals.
2099 Details : Conditional compiling for some areas that are different
2103 Frequency : occasional
2104 Bugzilla : 6409, 6834
2105 Description: Creating files with an explicit stripe count may lead to
2106 a failed assertion on the MDS
2107 Details : If some OSTs are full or unavailable, creating files may
2108 trigger a failed assertion on the MDS. Now, Lustre will
2109 try to use other servers or return an error to the
2113 Frequency : occasional
2115 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
2116 caused lock timeout during readahead (since 1.4.2).
2117 Details : Processes doing readahead might match a lock that hasn't been
2118 granted yet if there are overlapping and conflicting lock
2119 requests. The readahead process waits on ungranted lock
2120 (original lock is CBPENDING), while OST waits for that process
2121 to cancel CBPENDING read lock and eventually evicts client.
2123 Severity : enhancement
2125 Description: Initial enabling of flock support for clients
2126 Details : Implements fcntl advisory locking and file status functions.
2127 This feature is provided as an optional mount flag (default
2128 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
2129 locking are implemented yet, and those that are are not guaranteed
2130 to be completely correct in production environments.
2131 mount -t lustre -o [flock|noflock] ...
2134 Frequency : occasional
2136 Description: OSTs running 2.4 kernels but with extents enabled might trip an
2137 assertion in the ext3 JBD (journaling) layer.
2138 Details : The b_committed_data struct is protected by the big kernel lock
2139 in 2.4 kernels, serializing journal_commit_transaction() and
2140 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
2141 access to this struct. In 2.6 kernels there is finer grained
2142 locking to improve SMP performance of the JBD layer.
2146 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
2148 -----------------------------------------------------------------------------
2150 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
2152 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
2153 versions of Lustre. Please update all servers and clients to
2154 version 1.4.2 or later at the same time. You must also run
2155 "lconf --write-conf {config}.xml" on the MDS while it is stopped
2156 to update the configuration logs.
2158 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
2159 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
2160 - swab llog records of type '0' so we get proper header size/idx (5861)
2161 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
2162 - fix rename of one directory over another leaking an inode (5953)
2163 - avoid SetPageDirty on 2.6 (5981)
2164 - don't re-add just-being-destroyed locks to the waiting list (5653)
2165 - when creating new directories, inherit the parent's custom
2166 striping settings if present parent (3048)
2167 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
2168 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
2169 - don't hold client locks on temporary worklist from l_lru (5666)
2170 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
2171 - automatically evict dead clients (5921)
2172 - Update file size properly in create+truncate+fstat case (6196)
2173 - Do not unhash mountpoint dentries, do not allow removal of
2175 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
2176 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
2177 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
2178 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
2179 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
2180 - Correctly handle reads of files with no objects (6243)
2181 - lctl recover will also mark a device active if deactivate used (5933)
2183 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
2184 - allow --write-conf on an MDS with different nettype than client (5619)
2185 - don't write config llogs to MDS for mounts not from that MDS (5617)
2186 - lconf should create multiple TCP connections from a client (5201)
2187 - init scripts are now turned off by default; run chkconfig --on
2188 lustre and chkconfig --on lustrefs to use them
2189 - upcalls are no longer needed for clients to recover to failover
2191 - add --abort-recovery option to lconf to abort recovery on device
2193 - add support for an arbitrary number of OSTs (3026)
2194 - Quota support protocol changes.
2195 - forward compatibility changes to wire structs (6007)
2196 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
2197 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
2198 - improved "lustre status" script
2199 - initialize blocksize for non-regular files (6062)
2200 - added --disable-server and --disable-client configure options (5782)
2201 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
2202 - Vanilla 2.4.29 support
2203 - increase maximum number of obd devices to 520 (6242)
2204 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
2205 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
2206 SLES 9 2.6.5 kernels
2207 - limit stripes per file to 160 (the maximum EA size) (6093)
2209 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
2212 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
2213 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
2214 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
2215 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
2216 - small ext3 extents cleanups and fixes (5733)
2217 - improved mballoc code, several small races and bugs fixed (5733, 5638)
2218 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
2219 - avoid needless client->OST connect, fix handle mismatch (5317)
2220 - fix DLM error path that led to out-of-sync client, long delays (5779)
2221 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
2222 - fix several locking issues related to i_size (5492,5624,5654,5672)
2223 - don't move pending lock onto export if it is already evicted (5683)
2224 - fix kernel oops when creating .foo in unlinked directory (5548)
2225 - fix deadlock in obdfilter statistics vs. object create (5811)
2226 - use time_{before,after} to avoid timer jiffies wrap (5882)
2227 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
2228 - Do not leak request if server was not able to process it (5154)
2229 - If mds_open unable to find parent dir, make that negative lookup(5154)
2230 - don't create new directories with extent-mapping (5909, 5936)
2232 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
2233 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
2234 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
2235 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
2236 - support for RHEL4 kernel on i686 (5773)
2237 - provide error messages when incompatible logs are encountered (5898)
2239 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
2240 * version 1.4.0.10 (1.4.1 release candidate 1)
2242 - don't keep a lock reference when lock is not granted (4238)
2243 - unsafe list practices (rarely) led to infinite eviction loop (4908)
2244 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
2245 - drop import inflight refcount on signal_completed_replay error (5255)
2246 - unlock page after async write error during send (3677)
2247 - handle missing objects in filter_preprw_read properly (5265)
2248 - no transno return for symlink open, don't save no-trasno open (3440)
2249 - don't try to complete elan receive that already failed (4012)
2250 - free RPC server reply state on error (5406)
2251 - clean up thread from ptlrpc_start_thread() on error (5160)
2252 - readahead could read extra page into cache that wasn't ejected (5388)
2253 - prevent races in class_attach/setup/cleanup/detach (5260)
2254 - don't dereference de->d_inode after l_dput of de (5458)
2255 - use "int" for stripe value returned from lock_to_stripe (5544)
2256 - mballoc allocation and error-checking fixes in 2.6 (5504)
2257 - block device patches to fix I/O request sizes in 2.6 (5482)
2258 - look up hostnames for IB nals (5602)
2259 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
2260 - don't start multiple acceptors for the same port (5277)
2261 - fix incorrect LASSERT in mds_getattr_name (5635)
2262 - export a proc file for general "ping" checking (5628)
2263 - fix "lfs check" to not block when the MDS is down (5628)
2265 - service request history (4965)
2266 - put {ll,lov,osc}_async_page structs in a single slab (4699)
2267 - create an "evict_client" /proc entry on OSTs, like the MDS has
2268 - fix mount usage message, return errors per mount(8) (5168)
2269 - change grep [] to grep "[]" in tests so they work in more UMLs
2270 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
2271 - remove ancient LOV_MAGIC_V0 EA support (5047)
2272 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
2273 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
2274 - allow readahead allocations to fail when low on memory (5383)
2275 - mmap locking landed again, after considerable improvement (2828)
2276 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
2278 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
2281 - send OST transaction number in read/write reply to free req (4966)
2282 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
2283 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
2284 - the watchdog thread now runs as interruptible (5246)
2285 - flock/lockf fixes (but it's still disabled, pending 5135)
2286 - don't use EXT3 constants in llite code (5094)
2287 - memory shortage at startup could cause assertion (5176)
2289 - reorganization of lov code
2290 - single portals codebase
2292 - add extents/mballoc support (5025)
2293 - direct I/O reads in the obdfilter (4048)
2294 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
2296 tbd Cluster File Systems, Inc. <info@clusterfs.com>
2299 - send OST transaction number in read/write reply to free req (4966)
2300 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
2301 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
2302 - the watchdog thread now runs as interruptible (5246)
2303 - handle missing objects in filter_preprw_read properly (5265)
2304 - unsafe list practices (rarely) led to infinite eviction loop (4908)
2305 - drop import inflight refcount on signal_completed_replay error (5255)
2306 - unlock page after async write error during send (3677)
2307 - return original error code on reconstructed replies (3761)
2308 - no transno return for symlink open, don't save no-trasno open (3440)
2310 - add pid to ldlm debugging output (4922)
2311 - bump the watchdog timeouts -- we can't handle 30sec yet
2312 - extra debugging for orphan dentry/inode bug (5259)
2314 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
2317 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
2318 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
2319 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
2320 - fix NULL dereference in /proc/sys/portals/routes (4827)
2321 - allow failed mdc_close() operations to be interrupted (4561)
2322 - stop precreate on OST before MDS would time out on it (4778)
2323 - don't send partial-page writes before EOF from client (4410)
2324 - discard client grant for sub-page writes on large-page clients (4520)
2325 - don't free dentries not owned by NFS code, check generation (4806)
2326 - fix lsm leak if mds_create_objects() fails (4801)
2327 - limit debug_daemon file size, always print CERROR messages (4789)
2328 - use transno after validating reply (3892)
2329 - process timed out requests if import state changes (3754)
2330 - update mtime on OST during writes, return in glimpse (4829)
2331 - add mkfsoptions to LDAP (4679)
2332 - use ->max_readahead method instead of zapping global ra (5039)
2333 - don't interrupt __l_wait_event() during strace
2335 - add software watchdogs to catch hung threads quickly (4941)
2336 - make lustrefs init script start after nfs is mounted
2337 - fix CWARN/ERROR duplication (4930)
2338 - return async write errors to application if possible (2248)
2339 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
2340 - print NAL number in %x format (4645)
2341 - update barely-supported suse-2.4.21-171 series (4842)
2342 - support for sles 9 %post scripts
2343 - support for building 2.6 kernel-source packages
2344 - support for sles km_* packages
2346 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
2349 - ignore -ENOENT errors in osc_destroy (3639)
2350 - notify osc create thread that OSC is being cleaned up (4600)
2351 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
2352 - reconstruct ost_handle() like mds_handle() (4657)
2353 - create a new thread to do import eviction to avoid deadlock (3969)
2354 - let lconf resolve symlinked-to devices (4629)
2355 - don't unlink "objects" from directory with default EA (4554)
2356 - hold socknal file ref over connect in case target is down (4394)
2357 - allow more than 32000 subdirectories in a single directory (3244)
2358 - fix blocks count for O_DIRECT writes (3751)
2359 - OST returns ENOSPC from object create when no space left (4539)
2360 - don't send truncate RPC if file size isn't changing (4410)
2361 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
2362 - bind to privileged port in socknal and tcpnal (3689)
2364 - rate limit CERROR/CWARN console message to avoid overload (4519)
2365 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
2366 - basic mmap support (3918)
2367 - kernel patch series update from b1_4 (4711)
2369 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
2372 - avoid crash during MDS cleanup with OST shut down (2775)
2373 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
2374 - don't use bad inodes on the MDS (3744)
2375 - dynamic object preallocation to improve recovery speed (4236)
2376 - don't hold spinlock over lock dumping or change debug flags (4401)
2377 - don't zero obd_dev when it is force cleaned (3651)
2378 - print grants to console if they go negative (4431)
2379 - "lctl deactivate" will stop automatic recovery attempts (3406)
2380 - look for existing locks in ldlm_handle_enqueue() (3764)
2381 - don't resolve lock handle twice in recovery avoiding race (4401)
2382 - revalidate should check working dir is a directory (4134)
2384 - don't always mark "slow" obdfilter messages as errors (4418)
2386 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
2389 - don't close LustreDB during write_conf until it is done (3860)
2390 - fix typo in lconf for_each_profile (3821)
2391 - allow dumping logs from multiple threads at one time (3820)
2392 - don't allow multiple threads in OSC recovery (3812)
2393 - fix debug_size parameters (3864)
2394 - fix mds_postrecov to initialize import for llog ctxt (3121)
2395 - replace config semaphore with spinlock (3306)
2396 - be sure to send a reply for a CANCEL rpc with bad export (3863)
2397 - don't allow enqueue to complete on a destroyed export (3822)
2398 - down write_lock before checking llog header bitmap (3825)
2399 - recover from lock replay timeout (3764)
2400 - up llog sem before sending rpc (3652)
2401 - reduce ns lock hold times when setting kms (3267)
2402 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
2403 - fix NULL deref and obd_dev leak on setup error (3312)
2404 - replace some LBUG about llog ops with error handling (3841)
2405 - don't match INVALID dentries from d_lookup and spin (3784)
2406 - hold dcache_lock while marking dentries INVALID and hashing (4255)
2407 - fix invalid assertion in ptlrpc_set_wait (3880)
2409 - add libwrap support for the TCP acceptor (3996)
2410 - add /proc/sys/portals/routes for non-root route listing (3994)
2411 - allow setting MDS UUID in .xml (2580)
2412 - print the stack of a process that LBUGs (4228)
2414 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
2417 - don't cleanup request in ll_file_open() on failed MDS open (3430)
2418 - make sure to unset replay flag from failed open requests (3440)
2419 - if default stripe count is 0, use OST count for inode size (3636)
2420 - update parent mtime/ctime on client for create/unlink (2611)
2421 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
2422 - free recovery state on server during a forced cleanup (3571)
2423 - unregister_reply for resent reqs (3063)
2424 - loop back devices mounting and status check on 2.6 (3563)
2425 - fix resource-creation race that can provoke i_size == 0 (3513)
2426 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
2427 - more debugging for page-accounting assertion (3746)
2428 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
2429 - avoid deadlock after precreation failure (3758)
2430 - fix race and lock order deadlock in orphan handling (3450, 3750)
2431 - add validity checks when grabbing inodes from l_ast_data (3599)
2433 - add /proc/.../recovery_status to obdfilter (3428)
2434 - lightweight CDEBUG infrastructure, debug daemon (3668)
2435 - change default OSC RPC parameters to be better on small clusters
2436 - turn off OST read cache for files smaller than 32MB
2437 - install man pages and include them in rpms (3100)
2438 - add new init script for (un)mounting lustre filesystems (2593)
2439 - run chkconfig in %post for init scripts (3701)
2440 - drop scimac NAL (unmaintained)
2442 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
2445 - clean kiobufs before and after use (3485)
2446 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
2447 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
2448 - change init script to fail more clearly if not run as root (1528)
2449 - allow clients to reconnect during replay (1742)
2450 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
2451 - don't do DNS lookups on NIDs too small for IP addresses (3442)
2452 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
2453 - fix cond_resched (3554)
2454 - only evict unfinished clients after recovery (3515)
2455 - allow bulk resend, prevent data loss (3570)
2456 - dynamic ptlrpc request buffer allocation (2102)
2457 - don't allow unlinking open directory if it isn't empty (2904)
2458 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
2459 - remove extraneous obd dereference causing LASSERT failure (3334)
2460 - don't use get_cycles() when creating temp. files on the mds (3156)
2461 - hold i_sem when setting i_size in ll_extent_lock() (3564)
2462 - handle EEXIST for set-stripe, set proper directory name (3336)
2464 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
2465 - fix ksocknal_fmb_callback() error messages (2918)
2467 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
2470 - don't copy lvb into (possibly NULL) reply on error (2983)
2471 - don't deref dentry after dput, don't free lvb on error (2922)
2472 - use the kms to determine writeback rpc length (2947)
2473 - increment oti_logcookies when osc is inactive (2948)
2474 - update client's i_blocks count via lvb messages (2543)
2475 - handle intent open/close of special files properly (1557)
2476 - mount MDS with errors=remount-ro, like obdfilter (2009)
2477 - initialize lock handle to avoid ASSERT on error cleanup (3057)
2478 - don't use cancelling-locks' kms values (2947)
2479 - use highest lock extent for kms, not last one (2925)
2480 - don't dereference ERR_PTR() dentry in error handling path (3107)
2481 - fix thread race in portals_debug_dumplog() (3122)
2482 - create lprocfs device entries at setup instead of at attach (1519)
2483 - common AST error handler, don't evict client on completion race (3145)
2484 - zero nameidata in detach_mnt in 2.6 (3118)
2485 - verify d_inode after revalidate_special is valid in 2.6 (3116)
2486 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
2487 - initialize RPC timeout timer earlier for 2.6 (3219)
2488 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
2489 - print nal/nid for unknown nid (3258)
2490 - additional checks for oscc recovery before doing precreate (3284)
2491 - fix ll_extent_lock() error return code for 64-bit systems (3043)
2492 - don't crash in mdc_close for bad permissions on open (3285)
2493 - zero i_rdev for non-device files (3147)
2494 - clear page->private before handing to FS, better assertion (3119)
2495 - tune the read pipeline (3236)
2496 - fix incorrect decref of invalidated dentry (2350)
2497 - provide read-ahead stats and refine rpc in flight stats (3328)
2498 - don't hold journal transaction open across create RPC (3313)
2499 - update atime on MDS at close time (3265)
2500 - close LDAP connection when recovering to avoid server load (3315)
2501 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
2502 - don't leak open file on MDS after open resend (3325)
2503 - serialize filter_precreate and filter_destroy_precreated (3329)
2504 - loop device shouldn't call sync_dev() for nul device (3092)
2505 - clear page cache after eviction (2766)
2506 - resynchronize MDS->OST in background (2824)
2507 - refuse to mount the same filesystem twice on same mountpoint (3394)
2508 - allow llmount to create routes for mounting behind routers (3320)
2509 - push lock cancellation to blocking thread for glimpse ASTs (3409)
2510 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
2511 - fix rare problem with rename on htree directories (3417)
2513 - allow default OST striping configuration per directory (1414)
2514 - fix compilation for qswnal for 2.6 kernels (3125)
2515 - increase maximum number of MDS request buffers for large systems
2516 - change liblustreapi to be useful for external progs like lfsck (3098)
2517 - increase local configuration timeout for slow disks (3353)
2518 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
2520 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
2523 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
2524 - don't overwrite extent policy data in reply if lock was blocked (2901)
2525 - drop filter export grants atomically with removal from device (2663)
2526 - del obd_self_export from work_list in class_disconnect_exports (2908)
2527 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
2528 - swab reply message in mdc_close, other PPC fixes (2464)
2529 - fix destroying of named logs (2325)
2530 - overwrite old logs when running lconf --write_conf (2264)
2531 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
2532 - fix race in target_handle_connect (2898)
2533 - mds_reint_create() should take same inode create lock (2926)
2534 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
2535 - don't close files for self_export to avoid uninitialized obd (2936)
2536 - allow MDS with the same name as client node (2939)
2537 - hold dentry reference for closed log files for unlink (2325)
2538 - reserve space for all logs during transactions (2059)
2539 - don't evict page beyond end of stripe extent (2925)
2540 - don't oops on a deleted current working directory (2399)
2541 - handle hard links to targets without a parent properly (2517)
2542 - don't dereference NULL lock when racing during eviction (2867)
2543 - don't grow lock extents when lots of conflicting locks (2919)
2545 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
2548 - account for cache space usage on clients to avoid data loss (974)
2549 - lfsck support in lustre kernel code (2349)
2550 - reduce journal credits needed for BRW writes (2370)
2551 - orphan handling to avoid losing space on client/server crashes
2552 - ptlrpcd can be blocked, stopping ALL progress (2477)
2553 - use lock value blocks to assist in proper KMS, faster stat (1021)
2554 - takes i_sem instead of DLM locks internally on obdfilter (2720)
2555 - recovery for initial connections (2355)
2556 - fixes for mds_cleanup_orphans (1934)
2557 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
2558 - block all file creations until orphan recovery completes (1901)
2559 - client remove rq_connection from request struct (2423)
2560 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
2561 - recovery timer race (2670)
2562 - mdc_close recovey bug (2532)
2563 - ptlrpc cleanup bug (2710)
2564 - mds timeout on local locks (2588)
2565 - namespace lock held during RPCs (2431)
2566 - handle interrupted sync write properly (2503)
2567 - don't try to handle a message that hasn't been replied to (2699)
2568 - client assert failure during cleanup after abort recovery (2701)
2569 - leak mdc device after failed mount (2712)
2570 - ptlrpc_check_set allows timedout requests to complete (2714)
2571 - wait for inflight reqs when ptlrpcd finishes (2710)
2572 - make sure unregistered services are removed from the srv_list
2573 - reset bulk XID's when resending them (caught by 1138 test)
2574 - unregister_bulk after timeout
2575 - fix lconf error (2694)
2576 - handle write after unfinished setstripe, stripe-only getstripe (2388)
2577 - readahead locks pages, leaves pending causing memory pressure (2673)
2578 - increase OST request buffers to 4096 on large machines (2729)
2579 - fix up permission of existing directories in simple_mkdir (2661)
2580 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
2581 - don't assign transno to errored transactions (2742)
2582 - don't delete objects on OST if given a bogus objid from MDS (2751)
2583 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
2584 - if rq_no_resend, then timeout request after recovery (2432)
2585 - fix MDS llog_logid record size, 64-bit array alignment (2733)
2586 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
2587 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
2588 - MDS recovery shouldn't delete objects that it has given out (2730)
2589 - if enqueue arrives after completion, don't clobber LVB (2819)
2590 - don't unlock pages twice when trigger_group_io returns error (2814)
2591 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
2592 - don't write pages to disk if there was an error (1450)
2593 - don't ping imports that have recovery disabled (2676)
2594 - take buffered bytes into account when balancing socknal conn (2817)
2595 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
2596 - reconnect unlink llog connection after MDS reconnects to OST (2816)
2597 - remove little-endian swabbing of llog records (1987)
2598 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
2599 - retry reposting request buffers if they fail (1191)
2600 - grow extent at grant time to avoid granting a revoked lock (2809)
2601 - lock revoke doesn't evict page if covered by a second lock (2765)
2602 - disable VM readahead to avoid reading outside lock extents (2805)
2604 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
2605 - updated kernel patches for hp-2.4.20 kernel (2681)
2607 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
2610 - fix truncated write corruption (2366)
2611 - fix for failed assertion in iopen_connect_dentry (1792,2517)
2613 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
2614 - ensure len(uuid) < 37 in lmc (1171)
2615 - fix ia64 OOPS in llog_test (2255)
2616 - zero end of page at obdfilter for partial page writes (2648)
2617 - don't leave stale dentries around after renames (bug 2428)
2618 - fix timeouts when evicting a client with a single lock held (2642)
2619 - set deadline for the initial HELLO message to drain (2634)
2620 - print out dotted-quad IP addresses in the socknal (2302)
2622 - additional debugging for MDS client eviction problem (2443)
2623 - fix mkfsoptions support for osts (2603, 2604)
2625 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
2628 - add series for the vanilla 2.6.0 kernel
2629 - add series for the vanilla 2.4.24 kernel
2630 - add series for a cray x86/64 UL kernel drop
2631 - fix xattr patches for the vanilla 2.4.19 series
2633 - generate true UUIDs in lmc (1171)
2634 - have portals stack dumping break in UML (2466)
2635 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
2636 - allocate with _NOFS in ldlm to avoid deadlock (1933)
2637 - wake callback waiting threads on client eviction (2460)
2638 - Add --ptldebug and --subsystem to lmc (1719)
2639 - update assertion to allow safe interrupt allocation
2640 - set rq_no_resend for cancel requests (2432)
2641 - recalculate ptlrpcd timeout after resend (2494)
2642 - call vfs_rmdir when removing pending directories (2368)
2643 - fix renaming a file to itself (2429)
2644 - lmc creates a default one-stripe lov (2454)
2645 - expand procfs space to handle large clusters (2326)
2646 - increase UML stack to avoid overflow
2647 - update lconf's list of debug and subsystem masks
2648 - fix lfs find --obd (2510)
2649 - /proc tunable for disabling filter read caching (2591)
2650 - stop rpm packages from altering slapd.conf (2301)
2651 - disable nagle in the socknal under 0conf (2578)
2652 - choose mds inode size based on stripe count (2572)
2653 - fix kernel-source rpm problems (2516)
2655 - add --disable-doc to avoid pdf generation (2421)
2656 - update documentation, tests, type-os, comments
2657 - avoid format warnings on ia64
2658 - remove the TOE NAL
2659 - tiny code cleanups by removing unused fields
2661 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
2664 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
2665 - remove the most blatant lies from BUILDING file (2371)
2666 - change default debug level to reasonable production setting
2667 - reduce client side cache size to reduce cache flush time
2668 - reduce max RPCs in flight to avoid unnecessary file fragmentation
2669 - make TCP zerocopy and pinger support enabled by default (2476)
2670 - sync writes completed after process exits caused crashes (2319)
2671 - maintain correct mount count on the MDS (2356)
2672 - backout 1557, because 2316 wasn't really fixed
2673 - better file I/O statistics gathering in /proc
2674 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
2675 - another kernel patch to fix zero-copy TCP function export
2676 - don't take duplicate lock when processing re-sent getattr (2420)
2677 - lctl uses obd_self_export instead of creating new conn (2353)
2678 - MDS/OST recovery case which requires object creation asserted (2425)
2679 - move lfs from /usr/sbin to /usr/bin in packages
2680 - fix race between mds_client_add and mds_client_free (2417)
2681 - use kmalloc instead of slabs in portals (2430)
2682 - don't create duplicate records when a failover MDS is present (2442)
2683 - remove unnecessary mount age check (2332)
2684 - don't remove directory inodes from locks prematurely (2451)
2685 - don't break if MDS service name is the same as hostname (2103)
2686 - fix races in client write RPC generation when cache full (2482)
2688 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
2691 - remove now-unused request->rq_obd (278)
2692 - if an allocation fails, print out how much memory we've used (1933)
2693 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
2694 - add the "configurable stack size" patch to most series files (1256)
2695 - ability to write large log records, for 100+ OST configs (2306)
2696 - fix NULL deref when filter_prep fails (2314)
2697 - fix operator precedence error in filter_sync
2698 - dynamic allocation of socknal TX descriptors (2315)
2699 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
2700 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
2701 - ensure that CWARN messages in Portals always get to the syslog
2702 - __init/__exit are not for prototype decls (ldlm_init/exit)
2703 - x86-64 compile warning fixes
2704 - fix gateway LMC keyword conflict (2318)
2705 - fix MDS lock inversions in getattr/reint paths (1844)
2706 - fix a rare lock re-ordering bug, which caused deadlock (2322)
2707 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
2708 - DLM race condition prevented some lock evictions (2328)
2709 - ENOMEM detection and retry on socknal sends (2230)
2710 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
2711 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
2712 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
2713 - better error messages when a client is rejected during recovery (1505)
2714 - avoid cancelling locks which were never granted, after failure (2330)
2715 - fix i_sem/journal inversion in mds_client_add (2333)
2716 - fix truncate/getattr lock cycle deadlock (2334)
2717 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
2718 - fix two rare exit paths which could leak an l_lock() ref (2321)
2719 - fencepost error in MDS/OST orphan recovery (2226)
2720 - make log record alignment 8 bytes (1988)
2721 - lstripe now fails when requested offset > ost_count (2237)
2722 - ensure that all kernel series have a complete list.h (1607)
2723 - fix crashes in special-file operations (2316)
2724 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
2726 - allow configurable automake binary, for testing new versions
2727 - small update to the lfs documentation
2729 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
2731 * fix negative export reference count in fsfilt_sync (2312)
2733 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
2734 * release candidate 0.9.1
2736 - orphans are moved into the PENDING directory for possible recovery
2737 - replayed opens now open by fid for orphan/rename safety (1042)
2738 - last close of an orphan inode generates a transno (683)
2739 - chdir() and mount() now pin the directory entry (1020)
2740 - avoid CERROR in normal ll_setattr_raw() error case (1500)
2741 - discard very old requests without processing them (1502)
2742 - remove some common, well-understood CERRORs (1505)
2743 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
2744 - clear "grant" flags in OST replies until OST grant code lands (1644)
2745 - fix read performance by not clobbering i_blksize on client (1598)
2746 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
2747 - make LRU size a /proc tunable, clears locks when reduced (707)
2748 - fix some lprocfs rot that prevented ptlbd from loading (1732)
2749 - server locks take references on exports now (1558)
2750 - build fixes for 2.4.20-rh trees (1663)
2751 - return an error from lov_create if all OSCs are inactive (1751)
2752 - fix import levels when a reconnect happens without a timeout (1597)
2753 - exit early from mds_open if we get a lookup error (1749)
2754 - partial page read at EOF wouldn't wait for disk before sending (1642)
2755 - avoid NULL deref in obdfilter when reading page past EOF (1592)
2756 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
2757 - fix LBUG in ll_it_open_error with rc = -2 (1861)
2758 - write/truncate lock inversion (1639)
2759 - Don't auto-load obdclass, portals modules during cleanup (1495)
2760 - fix timestamps from jumping to "now" (1763)
2761 - extra journal assertions (1648)
2762 - add an extra multiunlink test (1771)
2763 - fix read_record/write_record API (1776)
2764 - fix leak of offset_extent, possible incorrect i_size later (1772)
2765 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
2766 - Debugging for the kqswnal_get_idle_tx problems (1820)
2767 - Allow recovery to be attempted multiple times (1536)
2768 - Write out MDS last_rcvd file after it is first created (1600)
2769 - Fix tx_descriptor leak in failed transmit situations (1827)
2770 - ext3 journaling fixes for assertion failure after IO error (1871)
2771 - class_export_put() on freed export after completion AST error (1896)
2772 - Fix revalidate looping in VFS (1322)
2773 - Don't access a freed export during MDS_REINT timeout (1521)
2774 - Add open-unlink recovery support on the MDS (1673,1764)
2775 - Return an error if no MDS data was read from last_rcvd (1946)
2776 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
2777 - Don't setup a disk device that doesn't match exported UUID (317)
2778 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
2779 - avoid committing NULL handle in force close
2780 - local.sh is now a one-stripe LOV configuration
2781 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
2782 - fix ext3 htree duplicate directory entry corruption (1516)
2783 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
2784 - update to new LOV EA format (2097)
2785 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
2787 2003-06-15 Phil Schwan <phil@clusterfs.com>
2790 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
2791 - per-import/export recovery handling (958, 931, 959)
2792 - multiple last-rcvd slots, for serving multiple FSes (949)
2793 - connections are again shared between multiple imp/exports (963, 964)
2794 - "umount -f" would hang if any requests needed to be sent (393, 978)
2795 - avoid pinning large req buffer by copying for queued messages (989)
2796 - add "uuid" to "lctl device" command to help upcalls (991)
2797 - "open" RPCs with transnos would confuse recovery counters (1037)
2798 - do proper endian conversion of all wire messages (288, 340, 891)
2799 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
2800 - call waiting locks callback from LDLM recovery thread (1127, 1151)
2801 - fix ptlrpc_connection leak in target_handle_connect (1174)
2802 - fix import refcounting bug in OST and MDS cleanup (1134)
2803 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
2804 - fix very unlikely obd_types race condition (501)
2805 - remove osc_open hack for echo_client (1187)
2806 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
2807 - a failure in read_inode2 leads to deadlock (1139)
2808 - cancel ack-locks as soon as transaction is committed (1072)
2809 - fix major leaks and crashes in the bulk I/O path (937, 1057)
2810 - make sure to commitrw after any preprw to avoid deadlock (1162)
2811 - failing to execute a file in a lustre FS would lock inode (1203)
2812 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
2813 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
2814 - obd_uuid2tgt would walk off the end of the list (1255)
2815 - on IA64 the osc would give portals incorrect bulk size (1258)
2816 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
2817 - fix lock inversion caused by new llite matching code (1282)
2818 - limit the number of dirty pages on a client to 10MB (1286)
2819 - timed out locks were not being corrected cancelled (1289)
2820 - fix O_DIRECT above 4GB on IA-32 (1292)
2821 * major user-visible changes
2822 - fail out/fail over policy now controlled by the upcall (993)
2824 - add OBD_PING to check server availability and failure (954)
2825 - lustre messages are now sent in sending host order (288, 340, 891)
2826 - add eadatalen to MDS getattr reply (340)
2827 - OST read replies may contain second buffer, with per-page status (593)
2829 2003-03-11 Phil Schwan <phil@clusterfs.com>
2832 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
2833 - failed open()s could cause deadlock; fixed (867, 869)
2834 - stop cancelling OST locks when files are closed (481)
2835 - overlapping XID spaces caused network corruption (851, 853)
2836 - fix unsafe fsfilt counter arithmetic; change to atomic_t
2837 - setattr_raw added, to do single-RPC, server-side setattrs
2838 - lmc/lconf syntax change for OST UUIDs
2839 - fix crashy race condition between ptlrpc_free_req and osc_close
2840 - don't use request in mdc_enqueue if we hit a timeout (889)
2841 - don't set the inode i_size for regular files from the MDS (896)
2842 - handle out of order completion AST (842)
2843 - don't LBUG if a lock request times out after receiving AST (913)
2844 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
2845 - if a bad lock AST arrives, send an error instead of dropping entirely
2846 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
2847 - fix leak in bulk IO when only partially completed (899, 900, 926)
2848 - fix O_DIRECT for ia64 (55)
2849 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
2850 - C-z after timeout could hang a process forever; fixed (977)
2852 - client-side I/O cache (678, 924, 929, 941, 970)
2854 - READPAGE and SETATTRs which don't take server-side locks get
2857 2003-02-11 Phil Schwan <phil@clusterfs.com>
2860 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
2861 - Fix fsfilt_extN_readpage() to read a full page of directory
2862 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
2863 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
2864 - Fix imbalanced LOV object allocation and out-of-bound access (469)
2865 - Most intent operations were removed, in favour of a new RPC mode
2866 that does a single RPC to the server and bypasses most of the VFS
2867 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
2868 - Aggressively cancel local locks on DLM servers
2869 - mds_reint_unlink sends EA to the client if it's the last nlink.
2870 client uses that EA to unlink OST objects.
2871 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
2872 - recursive symlinks were fixed (439)
2873 - fixed NULL deref in DEBUG_REQ
2874 - filter_update_lastobjid no longer calls sync, which annoyed extN
2875 - fixed multi-client small-writes to a single file problem (445)
2876 - fixed mtime updates during file writes (607)
2877 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
2878 - fixed bug in obd_brw_read/write() (under guise of testing 367)
2879 - fixed Linux OST size reporting problem (444, 656)
2880 - OST now updates object mtime with writes or setattr (607, 619)
2881 - client verifies file size before zeroing page past EOF (445)
2882 - OST now writes last allocated objid to disk with allocation (108)
2883 - LOV on echo now works (409)
2885 - mds_reint_unlink sends a new buffer, with the EA included. this
2886 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
2887 set if a regular file was being unlinked, and it was the last link
2888 - use PtlGet from the target for bulk writes (315)
2889 - OST now updates object mtime with writes or setattr (607, 619)
2890 - LDLM now has a grant-time callback to revalidate locked items, if
2892 - Many MDS operations were reorganized to combat race conditions
2894 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
2895 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
2897 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
2900 - Fully reactivate OST imports after reconnection (512, others)
2901 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
2902 - More graceful error handling for truncating on dead OST (515)
2903 - Don't error out unless we're actually accessing dead stripes (474)
2904 - Fix garbage sizes when stripes are missing (410)
2905 - LRU counters were broken, causing constant lock purge (433, 432)
2906 - garbage on read from stripes with failed OSTs (441)
2907 - mark OSCs as active before reconnecting during recovery (438)
2908 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
2909 - lfind did not preserve OST order in output (443)
2910 - symlinks cause hung clients, incorrect data (439)
2911 - stop dereferencing request after dropping refcount (457)
2912 - don't LASSERT(spin_is_locked) on non-SMP (455)
2913 - fixes for many rename() bugs
2914 - fstat didn't correctly synchronize attributes (399)
2915 - server must handle lock cancellation during blocking AST prep (487)
2916 - bulk descriptors were free()d too soon (511)
2917 - fix paths in lconf, which would load incorrect modules (451, 507)
2918 - fix confusing lconf 'host not found' error message (386)
2919 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
2920 - fix race condition in mdc_blocking_ast() for inode access (526)
2921 - fix lov_unpackmd() unpacking wrong number of stripes (537)
2922 - fix lov_set_osc_active() marking wrong OSC inactive (440)
2923 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
2924 - fix multiple writes of stripe MD to MDS (358, maybe 519)
2925 - fix lstripe in several ways (kernel side) (527)
2926 - fix request leak in ldlm_cli_enqueue (262)
2927 - incorrect OSC was marked inactive after OST failure
2928 - call mds_fs_cleanup before unmounting filesystem (524)
2929 - fix races between taking ns_lock and ldlm_lock_change_resource
2930 - fix races updating LOV export open file list
2931 - fix lov_enqueue error path, avoid decref-ing bad lock handle
2932 - fix recovery NULL deref in ldlm_cli_cancel_unused
2933 - fix some DLM races by using new hash table for lock handles (419)
2934 - permit the client to specify desired inodes, at replay
2935 - duplicate requests when we queue them for replay reintegration
2936 - fix last_rcvd offset calculation
2937 - sync after each recovered transaction, so we always make progress
2938 - never, not always, ERESTART requests without transnos
2939 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
2941 - skip replay if the MDS says that the client is already connected
2942 - don't check for a recovery-enabled export to match lctl's UUID
2943 - don't INC_USE_COUNT for phantom exports
2944 - don't crash when cleaning up phantom exports (567)
2945 - don't double-finish or set replay data for errored mdc_open requests
2946 - abort requests when they time out, so we don't get old replies
2947 - send/receive replies for AST messages again
2948 - if the client says that it doesn't have the lock, cancel it on the
2950 - if we timeout during I/O, don't try to cancel an in-use lock; instead
2951 mark it as destroyed, it will all work out when decref is called
2952 - fix module use counts (22, 581)
2954 - ASTs now expect a reply (server cancels lock on error reply)
2956 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
2959 - fix many simultaneous client startup (392)
2960 - fix dentry->d_it clobbering
2961 - credentials weren't being shipped for readdir/getattr operations
2962 - remove invalid assertions triggered during some concurrent MD
2964 - proper Lustre versions added (336, 389)
2965 - fix memory leak for create error case (398)
2966 - fix LOV locking bug that would get cli/srv out of sync
2967 - fix echo client over LOV (409)
2968 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
2969 - fix double-O_EXCL intent crash (424)
2970 - avoid sending multiple lock CANCELs (352)
2972 - MDS can do multi-client recovery (modulo bugs in new code)
2974 - many updates, edits, cleanups
2976 2002-11-18 Phil Schwan <phil@clusterfs.com>
2979 - fix null d_it dereference (346)
2980 - fix full OST/dbench hang (333)
2981 - fix permission problem with file removal (286)
2982 - fix removal of OSCs from LOV when they fail
2983 - fix NULL deref during bulk timeout (214)
2984 - fix problems related to multiple filesystems on one MDS (241)
2985 - fixed serious subtle metadata locking bugs
2986 - free locks on clients when inodes are removed due to memory
2988 - fix inode pointer in lock data (285)
2989 - partial support for multiple MDS on a single host (241)
2990 - data locks weren't cancelled at clear_inode time (290, 311)
2991 - intent locks could lead to unbounded lock growth (205)
2992 - added a maximum lock count, an LRU list, and a flusher
2993 - fix multiple rename (365)
2994 - properly abstracted the echo client
2995 - OSC locked 1 byte too many; fixed
2996 - rewrote brw callback code:
2997 - fixed recovery bugs related to LOVs (306)
2998 - fixed too-many-pages-in-one-write crash (191)
2999 - fixed (again) crash in sync_io_timeout (214)
3000 - probably fixed callback-related race (385)
3002 - Add capability to MDS protocol
3003 - LDLM cancellations and callbacks on different portals
3005 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
3008 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
3009 - defer open object destruction to close time (601981, 138)
3010 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
3011 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
3012 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
3013 - don't call obd_setattr in ll_file_release for destroyed objects
3014 * protocol change to lustre_msg: move |version| and add |flags|
3015 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
3016 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
3017 * added replay of create, unlink, link and rename operations during
3018 MDS failover; recovery should be much more robust now
3019 * remove failed OSCs from LOVs (only lov_create uses this so far)
3020 * the lustre-HOWTO was brought (more) up to date (582544)
3022 2002-10-23 Phil Schwan <phil@clusterfs.com>
3025 - in-use dentries weren't being reused properly (617851)
3026 - prevent multiple LDLM setup (599178)
3027 - fix LOV size calculations for truncate (617853)
3028 - fix client handling of MDS intent errors (POSIX)
3029 - fix permission bug in lovstripe.c test (624321)
3030 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
3031 - truncate past end of file could corrupt data
3032 - proper cleanup after timeouts, crashes, etc (592524, 550815)
3033 - a race in recovery could return ETIMEDOUT to apps (623947)
3034 - building outside the source directory was fixed
3035 * the lustre-HOWTO was brought (more) up to date (582544)
3036 * major progress was made on recovery functionality
3038 2002-10-10 Phil Schwan <phil@clusterfs.com>
3041 - recovery deadlock fix
3042 - rm -rf causes LBUG fix (617817)
3043 - file open by multiple tasks fix (618962)
3044 - directory permissions bugs (602707 and 620007)
3045 - journal_stop fixed with locking (611313)
3046 - O_APPEND failures resolved (618273, perhaps 614459)
3047 - lconf PATH fix (619770)
3048 - IA64 build fix (621450)
3049 - RPC buffer sizes scale with amount of memory
3051 2002-10-01 Phil Schwan <phil@clusterfs.com>
3054 - locks would be cancelled without throwing away data pages,
3055 resulting in inconsistent data (605627)
3056 - inode attributes were not always being refreshed (605627, 612449)
3057 - lconf now continues to cleanup after lctl reports an error
3058 - MDS now enforces user permissions (602707)
3059 - lprocfs cleanup fixed, but not yet enabled (614157)
3060 - fixed infinite server hang, should a client not respond to an AST
3061 - avoid going into recovery if user calls readlink() with a buffer
3062 that's too small (613941)
3063 - AST RPCs no longer require replies (614867) -- this may be changed
3064 - don't crash server if client sends an IOV that's too big (611336)
3065 - fixed lock conversion deadlock (611892)
3066 - fixed the following of symlinks (614622)
3067 * recovery: the server can remove locks from a client that dies, other
3068 clients can make progress
3069 * more extN patch fixes
3070 * compile-time configurable ptlrpc buffer allocations
3072 - collaborative read cache document
3073 - Lustre Lite Performance CDR document-in-progress
3075 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3078 - fix typo in patch-2.4.18
3080 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
3083 - clear ptlrpc request each time in handle_incoming_request()
3084 - unlink of files now destroys the object on the OST
3086 2002-09-19 Peter Braam <braam@clusterfs.com>
3088 * add hard link support
3089 * change obdfile creation method
3090 * kernel patch changed
3092 2002-09-19 Peter Braam <braam@clusterfs.com>
3095 - stack overflow bug in extN fixed
3097 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
3099 * documentation updates
3100 - add man pages for config tools
3101 - update tests/README to describe testing with new config tools
3102 - finish metadata API descriptions
3103 * bug fixes and cleanups
3104 - statfs workaround for 16TB limit
3105 - LOV stripe allocation improved, can stripe on subset of OSTs
3106 - LOV file size/IO offset was wrong for files > 4GB in size
3107 - object EA data was being dropped, caused files to be unreadable
3108 - memory overflow with non-LOV OST caused memory corruption
3109 - fixed regression tests to work with new config tools, obdfilter
3110 - fixed bug when directory size became larger than 1 block
3111 - fixed bug (for single client case) when PWD was deleted
3112 - invalidate local directory pages when doing intent-based ops
3113 - avoid LDLM oops when lock callback contained bad data
3115 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
3117 * documentation updates
3118 * bug fixes and cleanups
3119 - configuration tools
3122 - 64-bit compile warnings
3123 - 64-bit internal statfs data
3125 * test_brw on persistent OST devices
3127 * lprocfs (disabled)
3129 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
3131 * documentation updates
3132 * bug fixes and cleanups
3133 * configuration tools
3135 2002-08-30 Peter J. Braam <braam@clusterfs.com>
3138 * many small fixes to 0_5_4
3139 * io/network handling
3140 * thinkos in MDS operations
3142 2002-08-24 Peter J. Braam <braam@clusterfs.com>
3145 * crucial basic fixes to 0.5.3
3146 * IOR, Iozone work over Elan
3149 2002-08-07 Phil Schwan <phil@clusterfs.com>
3150 * version 0_5_3, our first alpha
3151 * we use the new Portals iovs
3152 * documentation updates
3153 * bug fixes and cleanups
3154 * small changes in the DLM wire protocol
3156 2002-07-25 Peter J. Braam <braam@clusterfs.com>
3157 * version 0_5_1 with some initial stability,
3158 * locking on MD and file I/O.
3159 * documentation updates
3160 * several bug fixes since 0.5.0
3161 * small changes in wire protocol
3163 2002-07-18 Phil Schwan <phil@clusterfs.com>
3165 * delivered as Lustre Light Alpha
3166 * fixed a crash after handling invalid MDS requests
3167 * fixed directory pages for architectures with non-4k pages sizes
3169 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
3170 * release version v0_4_4
3171 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
3173 * Fixes a number of interruption problems with OST operations.
3174 * Update documentation for portals header changes
3175 * Move all wire protocol structs/defines to lustre_idl.h
3176 * Fixes symlink length bug.
3177 * Add tcpdump to repository.
3179 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
3180 * release version v0_4_3
3181 * Fixes statfs for inodes on extN.
3182 * Fixes bug in runtests which would delete /etc/hosts.
3183 * Use 64-bit object IDs wherever possible (not into VFS though)
3184 Remove ost_get_info, which is unused by lustre, and out of date.
3186 2002-07-03 Peter Braam <braam@clusterfs.com>
3187 * release version v0_4_2 Fixes a lookup error (type not passed)
3188 * move forward to head of Portals
3189 * move forward to latest Lustre kernel
3191 2002-06-25 Peter Braam <braam@clusterfs.com>
3192 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob