1 tbd Sun Microsystems, Inc.
4 2.6.16.60-0.27 (SLES 10),
5 2.6.18-92.1.6.el5 (RHEL 5),
6 2.6.22.14 vanilla (kernel.org).
7 * Client support for unpatched kernels:
8 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
9 2.6.16 - 2.6.21 vanilla (kernel.org)
10 * Recommended e2fsprogs version: 1.40.11-sun1
11 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
12 * RHEL 4 and RHEL 5/SLES 10 clients behaves differently on 'cd' to a
13 removed cwd "./" (refer to Bugzilla 14399).
15 Severity : enhancement
17 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.27.
19 Severity : enhancement
21 Description: Upcall on Lustre log has been dumped
22 Details : Allow for a user mode script to be called once a Lustre log has
23 been dumped. It passes the filename of the dumped log to the
24 script, the location of the script can be specified via
25 /proc/sys/lnet/debug_log_upcall.
30 Description: avoid messages about idr_remove called for id which is not allocated.
31 Details : Move assigment s_dev for clustered nfs to end of initialization, for
32 avoid problem with error handling.
37 Description: avoid Already found the key in hash [CONN_UNUSED_HASH] messages
38 Details : When connection is reused this not moved from CONN_UNUSED_HASH into
39 CONN_USED_HASH and this prodice warning when put connection again
42 Severity : enhancement
44 Description: Export bytes_read/bytes_write count on OSC/OST.
48 Description: Early reply size mismatch, MGC loses connection
49 Details : Apply the MGS_CONNECT_SUPPORTED mask at reconnect time so
50 the connect flags are properly negotiated.
54 Description: Properly propagate oinfo flags from lov to osc for statfs
55 Details : restore missing copy oi_flags to lov requests.
57 Severity : enhancement
59 Description: Add man pages for llobdstat(8), llstat(8), plot-llstat(8),
60 : l_getgroups(8), lst(8), routerstat(8)
61 Details : included man pages for llobdstat(8), llstat(8),
62 : plot-llstat(8), l_getgroups(8), lst(8), routerstat(8)
64 Severity : enhancement
66 Description: configure's --enable-quota should check the
67 : kernel .config for CONFIG_QUOTA
68 Details : configure is terminated if --enable-quota is passed but
69 : no quota support is in kernel
73 Description: Remove portals compatibility
74 Details : Remove portals compatibility, not interoperable with releases
79 Description: Resolve device initialization race
80 Details : Prevent proc handler from accessing devices added to the
81 obd_devs array but yet be intialized.
83 Severity : enhancement
85 Description: Update to SLES10 SP2 kernel-2.6.16.60-0.23.
87 Severity : enhancement
89 Description: Update to RHEL5 kernel-2.6.18-92.1.6.el5.
94 Description: Using wrong pointer in osc_brw_prep_request
95 Details : Access to array[-1] can produce panic if kernel compiled with
96 CONFIG_PAGE_ALLOC enabled
100 Description: Client runs out of low memory
101 Details : Consider only lowmem when counting initial number of llap pages
105 Description: *optional* service tags registration
106 Details : if the "service tags" package is installed on a Lustre node
107 When the filesystem is mounted, a local-node service tag will
108 be created. See http://inventory.sun.com/ for more information
109 about the Service Tags asset management system.
113 Description: Kernel BUG tries to release flock
114 Details : Lustre does not destroy flock lock before last reference goes
115 away. So always drop flock locks when client is evicted and
116 perform unlock regardless of successfulness of speaking to MDS.
120 Description: add recount protection for osc callbacks, so avoid panic on shutdown
124 Description: sanity test 65a fails if stripecount of -1 is set
125 Details : handle -1 striping on filesystem in ll_dirstripe_verify
130 Description: ASSERTION(CheckWriteback(page,cmd)) failed
131 Details : badly clear PG_Writeback bit in ll_ap_completion can produce false
134 Severity : enhancement
136 Description: Update to RHEL5 kernel-2.6.18-53.1.21.el5.
140 Description: do not process already freed flock
141 Details : flock can possibly be freed by another thread before it reaches
142 to ldlm_flock_completion_ast.
146 Description: LBUG during stress test
147 Details : Need properly lock accesses the flock deadlock detection list.
151 Description: oops in page fault handler
152 Details : kernel page fault handler can return two special 'pages' in error case, don't
153 try dereference NOPAGE_SIGBUS and NOPAGE_OMM.
157 Description: timeout with invalidate import.
158 Details : ptlrpcd_check call obd_zombie_impexp_cull and wait request which should be
159 handled by ptlrpcd. This produce long age waiting and -ETIMEOUT
160 ptlrpc_invalidate_import and as result LASSERT.
162 Severity : enhancement
164 Description: Update to RHEL5 kernel-2.6.18-53.1.19.el5.
168 Description: enable MGS and MDT services start separately
169 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
170 a co-located MGS without starting the MGS, which is a complement
171 to 'nosvc' mount option.
175 Frequency : after recovery
176 Description: precreate to many object's after del orphan.
177 Details : del orphan st in oscc last_id == next_id and this triger growing
178 count of precreated objects. Set flag LOW to skip increase count
179 of precreated objects.
183 Frequency : rare, on clear nid stats
184 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
185 Details : when clean nid stats sometimes try destroy live entry,
186 and this produce panic in free.
190 Description: Stack overflow during MDS log replay
191 ease stack pressure by using a thread dealing llog_process.
195 Description: wait until IO finished before start new when do lock cancel.
196 Details : VM protocol want old IO finished before start new, in this case
197 need wait until PG_writeback is cleared until check dirty flag and
198 call writepages in lock cancel callback.
200 Severity : enhancement
202 Description: using special macro for print time and cleanup in includes.
206 Description: mds_mfd_close() ASSERTION(rc == 0)
207 Details : In mds_mfd_close(), we need protect inode's writecount change
208 within its orphan write semaphore to prevent possible races.
212 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
216 Frequency : rare, on shutdown ost
217 Description: don't hit live lock with umount ost.
218 Details : shrink_dcache_parent can be in long loop with destroy dentries,
219 use shrink_dcache_sb instead.
223 Description: don't panic with use echo client
224 Details : echo client pass NULL as client nid pointer and this produce null
229 Description: fix build on ppc32
230 Details : compile code with -m64 flag produce wrong object file for ppc32.
234 Description: add message levels for liblustreapi
238 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
239 Details : Move the 'good_osts' check before the 'total_bavail' check. This
240 will result in an -EAGAIN and in the exit call path we call
241 alloc_rr() which will with increasing aggressiveness attempt to
242 aquire precreated objects on the minimum number of required OSCs.
246 Description: Use old size assignment to avoid deadlock
247 Details : This reverts the changes in bugs 2369 and bug 14138 that introduced
248 the scheduling while holding a spinlock. We do not need locking
249 for size in ll_update_inode() because size is only updated from
250 the MDS for directories or files without objects, so there is no
251 other place to do the update, and concurrent access to such inodes
252 are protected by the inode lock.
256 Description: resolve "_IOWR redefined" build error on SLES10
260 Description: dump the memory debugging after all modules are unloaded to
261 suppress false negative in conf_sanity test 39
263 Severity : enhancement
265 Description: build kernel-ib packages for OFED 1.3 in our release cycle
270 Description: fix SLES kernel versioning
271 Details : the kernel version for our SLES 10 kernel did not include a "-"
272 before the "smp" at the end. while this was not a problem in
273 general, it did mean that software trying to use the kernel
274 version to try to detect a vendor specific kernel would fail.
275 this was most evident by the OFED build scripts.
279 Description: Don't update lov_desc members until making sure they are valid
280 Details : When updating lov_desc members via proc fs, need fix their
281 validities before doing the real update.
285 Description: don't put request into delay list while invalidate in flight.
286 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
287 import in flight. this produce timeout for invalidate and sometimes
288 can cause stale data.
292 Frequency : on ppc only
293 Description: not convert ost objects for directory because it's not exist.
294 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
298 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
300 Severity : enhancement
302 Description: Update to support 2.6.22.14 vanilla kernel.
306 Frequency : rare, on recovery
307 Description: read procfs can produce deadlock in some situation
308 Details : Holding lprocfs lock which send rpc can produce block for destroy
309 obd objects and this also block reconnect with -EALREADY. This isn't
310 fix all lprocfs bugs - but make it rare.
312 Severity : enhancement
314 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
317 Frequency : frequent on X2 node
319 Description: mdc_set_open_replay_data LBUG
320 Details : Set replay data for requests that are eligible for replay.
324 Description: lustre_mgs: operation 101 on unconnected MGS
325 Details : When MGC is disconnected from MGS long enough, MGS will evict the
326 MGC, and late on MGC cannot successfully connect to MGS and a lot
327 of the error messages complaining that MGS is not connected.
331 Frequency : on network error
332 Description: panic with double free request if network error
333 Details : mdc_finish_enqueue is finish request if any network error ocuring,
334 but it's true only for synchronus enqueue, for async enqueue
335 (via ptlrpcd) this incorrect and ptlrpcd want finish request
338 Severity : enhancement
340 Description: client-side metadata stat-ahead during readdir(directory readahead)
341 Details : perform client-side metadata stat-ahead when the client detects
342 readdir and sequential stat of dir entries therein
345 Frequency : on start mds
347 Description: Implement get_info(last_id) in obdfilter.
350 Frequency : occasional
352 Description: Correctly check stale fid, not start epoch if ost not support SOM
353 Details : open with flag O_CREATE need set old fid in op_fid3 because op_fid2
354 overwrited with new generated fid, but mds can anwer with one of these
355 two fids and both is not stale. setattr incorectly start epoch and
356 assume will be called done_writeting, but without SOM done_writing
360 Frequency : rare, depends on device drivers and load
362 Description: MDS or OSS nodes crash due to stack overflow
363 Details : Code changes in 1.8.0 increased the stack usage of some functions.
364 In some cases, in conjunction with device drivers that use a lot
365 of stack the MDS (or possibly OSS) service threads could overflow
366 the stack. One change which was identified to consume additional
367 stack has been reworked to avoid the extra stack usage.
370 Frequency : occasional
372 Description: Do not fail import if osc_interpret_create gets -EAGAIN
373 Details : If osc_interpret_create got -EAGAIN it immediately exits and
374 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
375 oscc_has_objects and see OSC has no objests and call
376 oscc_internal_create to resend create request.
378 Severity : enhancement
380 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
382 Severity : enhancement
384 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
387 Frequency : very rare
389 Description: Fix replay if there is an un-replied request and open
390 Details : In some cases, older replay request will revert the
391 mcd->mcd_last_xid on MDS which is used to record the client's
394 Severity : enhancement
396 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
398 Severity : enhancement
400 Description: Add rhel5 support to HEAD.
402 Serverity : enhancement
404 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
409 Description: Don't allow skipping OSTs if index has been specified.
410 Details : Don't allow skipping OSTs if index has been specified, make locking
411 in internal create lots better.
415 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
416 Details : access to bitfield in structure is always rounded to long
417 and this produce problem with not atomic change any bit.
421 Description: Lustre make rpms failed.
422 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
423 builds Lustre rpms from tarball.
426 Frequency : rare on shutdown ost
428 Description: If llog cancel was not send before clean_exports phase, this can
429 produce deadlock in llog code.
430 Details : If llog thread has last reference to obd and call class_import_put
431 this produce deadlock because llog_cleanup_commit_master wait when
432 last llog_commit_thread exited, but this never success because was
433 called from llog_commit_thread.
437 Description: allow userland application know is lost one of stripes.
438 Details : fill lvb_blocks with error code on ost and return it to
439 application if error flag found.
443 Description: NULL lov_tgts causing MDS oops
444 Details : more safe checks for NULL lov_tgts for avoid oops.
446 Severity : enhancement
448 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
452 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
453 Details : If an OST is down the MDS will hang indefinitely in
454 obd_statfs_rqset() waiting for the statfs data. While for
455 MDS QOS usage of statfs, it should not stuck in waiting.
457 Severity : enhancement
459 Description: remote_acl support
460 Details : Support ACL-based permission check for remote user.
461 Support setfacl/getfacl for remote user with the utils
462 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
463 the system "{s,g}etfacl" utils.
465 Severity : enhancement
467 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
469 Severity : enhancement
471 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
475 Description: make mgs_setparam() handle fsname containing dash
476 Details : fsname containing a dash does not work with lctl conf_param
478 Severity : enhancement
480 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
482 Severity : enhancement
484 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
488 Frequency : rare, at shutdown
489 Description: access already free / zero obd_namespace.
490 Details : if client_disconnect_export was called without force flag set,
491 and exist connect request in flight, this can produce access to
492 NULL pointer (or already free pointer) when connect_interpret
493 store ocd flags in obd_namespace.
497 Frequency : only at startup
498 Description: not alloc memory with spinlock held.
499 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
500 if any spinlock held.
502 Severity : enhancement
504 Description: make lustre randomly fail allocating memory
505 Details : Make lustre randomly failed allocating memory for testing purpose.
507 Severity : enhancement
509 Description: lost problems with lov objid file
510 Details : Fixes some scability and access to not inited memory problems
511 in work with lov objdid file.
516 Description: lfs find does not continue on file error
517 Details : Continue other files processing when a file/dir is absent.
521 Description: Inconsistent usage of lustre_pack_reply()
522 Details : Standardize the usage of lustre_pack_reply() such that it
523 always generate a CERROR on failure.
526 Frequency : occasional
528 Description: MDS hang or stay in waiting lock
529 Details : If client receive lock with CBPENDING flag ldlm need send lock
530 cancel as separate rpc, to avoid situation when cancel request
531 can't processed due all i/o threads stay in wait lock.
535 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
539 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
543 Description: Update to SLES9 kernel-2.6.5-7.287.3.
547 Description: Update to RHEL4 latest kernel.
549 Severity : enhancement
551 Description: Build SLES10 patchless client fails
552 Details : The configure was broken by run ./configure with
553 --with-linux-obj=.... argument for patchless client. When the
554 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
555 can't search header adequately. Use absolute path such as
556 -I($LINUX)/include instead.
560 Description: interrupt oig_wait produce painc on resend.
561 Details : brw_redo_request can be used for resend requests from ptlrpcd and
562 private set, and this produce situation when rq_ptlrpcd_data not
563 copyed to new allocated request and triggered LBUG on assert
564 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
565 ptlrpcd set if request is changed and can be safety changed to use
570 Description: LASSERT_{REQ,REP}SWAB macros are buggy
571 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
572 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
573 these macros and replace them with their difinitions instead.
577 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
578 Details : Update which_patch & target file for SLES10 latest kernel.
581 Description: Remove client patches from SLES 10 kernel.
582 Details : This causes SLES 10 clients to behave as patchless clients
583 even on a Lustre-patched (server) kernel.
585 Severity : enhancement
587 Description: self-adjustable client's lru lists
588 Details : use adaptive algorithm for managing client cached locks lru
589 lists according to current server load, other client's work
590 pattern, memory activities, etc. Both, server and client
591 side namespaces provide number of proc tunables for controlling
594 Severity : enhancement
596 Description: light-weight GSS support
597 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
598 and reduce performance overhead.
600 Severity : enhancement
602 Description: Linux keyring support
603 Details : Support using service of Linux keyring for Lustre GSS internal
604 context refresh/cache mechanism.
608 Description: Fix errors in lfs documentation
609 Details : Fixes man pages
613 Description: don't use GFP_* in generic Lustre code.
614 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
618 Description: obdclass is limited by single OBD_ALLOC(idarray)
619 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
623 Description: warnings with build patchless client with vanila 2.6.19 and up
624 Details : change old ctl_table style and replace ctl_table/ctl_table_header
625 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
629 Frequency : Only for SLES
630 Description: sanity_quota fail test_1
631 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
632 file, which makes TSTID[2] inunique.
636 Frequency : Only for SLES9
637 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
638 Details : Update target/ChangeLog/which_patch .
642 Frequency : Only for test_10 in sanity-quota.sh
643 Description: a bug in quota test code
644 Details : checking a test flag in a wrong place
648 Frequency : Only for test_13 in sanity-quota.sh
649 Description: a bug in quota test script
650 Details : shouldn't check overfull allocated quota
654 Description: jbd statistics
655 Details : Port older jbd statistics patch for sles10
657 Severity : enhancement
659 Description: Add printing inode info into message about error in writepage.
664 Description: reply_lock_interpret crash due to race with it and lock cancel.
665 Details : Do not replay locks that are being cancelled. Do not reference
666 locks by their address during replay, just by their handle.
670 Frequency : When flocks are used.
671 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
672 Details : Flock locks might destroy just granted lock if it could be merged
673 with another existing flock, this is done in completion handler,
674 so teach ldlm_cli_enquque_fini that this is a valid case for
680 Description: Oops in read and write path when failing to allocate lock.
681 Details : Check if lock allocation failed and return error back.
685 Description: lstripe command fails for valid OST index
686 Details : The stripe offset is compared to lov->desc.ld_tgt_count
687 instead of lov->desc.ld_active_tgt_count.
691 Description: sanity.sh failed test 103
692 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
697 Description: df doesn't work properly if diskfs blocksize != 4K
698 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
702 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
703 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
705 Severity : enhancement
707 Description: Adaptive timeouts
708 Details : RPC timeouts adapt to changing server load and network
709 conditions to reduce resend attempts and improve recovery time.
713 Description: llapi_file_create() does not allow some changes
714 Details : add llapi_file_open() that allows specifying the mode and
715 open flags, and also returns an open file handle.
719 Description: merge and cleanup kernel patches.
720 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
724 Description: Add journal checksum support.(Kernel part)
725 Details : The journal checksum feature adds two new flags i.e
726 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
727 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
728 indicates that the commit block contains the checksum for
729 the blocks described by the descriptor blocks. Now commit
730 record can be sent to disk without waiting for descriptor
731 blocks to be written to disk. This behavior is controlled
732 using JBD2_FEATURE_ASYNC_COMMIT flag.
736 Description: OSS needs mutliple precreate threads
737 Details : Add ability to start more than one create thread per OSS.
741 Description: Sanity.sh test_65k failed: setstripe should have succeeded
742 Details : execute lfs setstripe on client
746 Description: mds_obd_create error creating tmp object
747 Details : When the user sets quota on root, llog will be affected and can't
748 create files and write files.
751 Frequency : Always on ia64 patchless client, and possibly others.
753 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
754 Details : This allows the patchless client to be loaded on architectures
759 Description: RedHat Update kernel for RHEL5
760 Details : Add the kernel config file for RHEL5.
764 Description: RedHat Update kernel for RHEL5
765 Details : Modify the kernel config file more closer RHEL5.
769 Description: Build failure against Centos5 (RHEL5)
770 Details : Define PAGE_SIZE when it isn't present.
774 Description: test_7 on sanity-quota.sh can't be used on separate machines
775 Details : add facet to handle it
779 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
780 Details : with NFS, the anon dentry's parent was set to itself in
781 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
782 corresponding dentry other than use rec->ur_name.
784 Severity : enhancement
786 Description: lfs setstripe enhancement
787 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
791 Description: enable data checksumming by default
792 Details : enable checksum by default, allow --disable-checksum
793 configure option and "-o nochecksum" mount option. Checksums
794 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
798 Description: lustre support for RHEL5
799 Details : Add support for RHEL5.
803 Description: Client eviction due to failover config
804 Details : after a connection loss, the lustre client should attempt to
805 reconnect to the last active server first before trying the
806 other potential connections.
810 Description: when mds and osts use different quota unit(32bit and 64bit),
811 quota will be released repeatly.
812 Details : void sending multiple quota reqs to mds, which will keep the
813 status between the reqs.
817 Description: osts not allocated evenly to files
818 Details : change the condition to increase offset_idx
821 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
823 Description: Data corruption for OSTs that are formatted larger than 2TB
825 Details : When generating the bio request for lustre file writes the
826 sector number would overflow a temporary variable before being
827 used for the IO. The data reads correctly from Lustre (which
828 will overflow in a similar manner) but other file data or
829 filesystem metadata may be corrupted in some cases.
833 Description: Tune the kernel for good SCSI performance.
834 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
835 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
840 Description: rewrite ext2-derived code in obdclass/uuid.c
841 Details : rewrite inherited code (uuid parsing code from ext2 utils)
842 from scratch preserving functionality.
846 Description: "lfs find -obd UUID" prints directories
847 Details : "lfs find -obd UUID" will return all directory names instead
848 of just file names. It is incorrect because the directories
849 do not reside on the OSTs.
853 Description: use i_size_read and i_size_write in 2.6 port
854 Details : replace inode->i_size access with i_size_read/write()
857 Frequency : when removing large files
859 Description: scheduling issue during removal of large Lustre files
860 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
861 It causes scheduling issues when removing large files (17TB in the
865 Frequency : only with liblustre clients on XT3
867 Description: evictions taking too long
868 Details : allow llrd to evict clients directly on OSTs
871 Frequency : only on ppc
873 Description: /proc/fs/lustre/devices broken on ppc
874 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
875 We should make sure the type of 'index' is loff_t and then cast
876 explicitly as needed below. Do not assign an explicitly cast
880 Frequency : only for rhel5
882 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
883 Details : Modify the target file & which_kernel.
885 Severity : enhancement
887 Description: omit set fsid for export NFS
888 Details : fix set/restore device id for avoid EMFILE error and mark lustre fs
889 as FS_REQUIRES_DEV for avoid problems with generate fsid.
893 Frequency : Always, for kernels after 2.6.16
894 Description: Fix warning idr_remove called for id=.. which is not allocated.
895 Details : Last kernels save old s_dev before kill super and not allow
896 to restore from callback - restore it before call kill_anon_super.
900 Description: buffer overruns could theoretically occur
901 Details : llapi_semantic_traverse() modifies the "path" argument by
902 appending values to the end of the origin string, and a
903 overrun may occur. Adding buffer overrun check in liblustreapi.
907 Description: Fix error on 'ls .' at the top of the Lustre mount.
908 Details : Don't revalidate dentry if it is a root dentry.
912 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
913 Details : Modify vm-tunables-rhel4.patch.
917 Description: Kernel config for 2.6.18-vanilla.
918 Details : Modify targets/2.6-vanilla.target.in.
919 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
920 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
921 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
922 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
926 Description: improve handling recoverable errors
927 Details : if request processig with error which can be recoverable on server
928 request should be resend, otherwise page released from cache and
933 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
934 Details : Modify target file & which_patch.
935 A flaw was found in the IA32 system call emulation provided
936 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
937 value could be stored in the %RAX register, which could trigger an
938 out-of-bounds system call table access. An untrusted local user
939 could exploit this flaw to run code in the kernel
940 (ie a root privilege escalation). (CVE-2007-4573).
944 Description: O_DIRECT bypasses client statistics.
945 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
946 read_ahead_stats were updated. copied the stats section from
947 osc_send_oap_rpc() into async_internal().
951 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
955 Description: change order of libsysio includes
956 Details : '#include sysio.h' should always come before '#include xtio.h'
960 Description: handle "serious error: objid * already exists" more gracefully
961 Details : If LAST_ID value on disk is smaller than the objects existing in
962 the O/0/d* directories, it indicates disk corruption and causes an
963 LBUG(). If the object is 0-length, then we should use the existing
964 object. This will help to avoid a full fsck in most cases.
966 Severity : enhancement
968 Description: adapt the lustre_config script to support the upgrade case
969 Details : Add "-u" option for lustre_config script to support upgrading 1.4
970 server targets to 1.6 in parallel.
974 Description: To avoid grant space > avaible space when the disk is almost
975 full. Without this patch you might see the error "grant XXXX >
976 available" or some LBUG about grant, when the disk is almost
978 Details : In filter_check_grant, for non_grant cache write, we should
979 check the left space by if (*left > ungranted + bytes), instead
980 of (*left > ungranted), because only we are sure the left space
981 is enough for another "bytes", then the ungrant space should be
982 increase. In client, we should update cl_avail_grant only there
983 is OBD_MD_FLGRANT in the reply.
987 Description: Update RHEL 4 kernel to fix local root privilege escalation.
988 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
989 described in CVE-2007-4573. This problem could allow untrusted
990 local users to gain root access.
993 Frequency : when using O_DIRECT and quotas
995 Description: Incorrect file ownership on O_DIRECT output files
996 Details : block usage reported by 'lfs quota' does not take into account
997 files that have been written with O_DIRECT.
1002 Description: touch file failed when fs is not full
1003 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
1004 otherwise we can get ENOSP while fs is not full.
1008 Description: parallel lock callbacks
1009 Details : Instead of sending blocking and completion callbacks as separated
1010 requests, adding them to a set and sending in parallel.
1013 Frequency : only for Cray XT3
1014 Bugzilla : 12829/13455
1015 Description: Changing primary group doesn't change the group lustre assigns to
1017 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
1018 overridden with the primary group provided by the group upcall,
1019 whereas the supplied fsgid can be trusted if it is in the list of
1020 supplementary groups returned by the group upcall.
1022 Severity : enhancement
1024 Description: Allow masking D_WARNING, D_ERROR messages from console
1025 Details : Console messages can now be disabled via lnet.printk.
1029 Description: User code with malformed file open parameter crashes client node
1030 Details : Before packing join_file req, all the related reference should be
1031 checked carefully in case some malformed flags cause fake
1032 join_file req on client.
1036 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
1037 Details : ldlm_completion_ast() assumes that a lock is granted when the req
1038 mode is equal to the granted mode. However, it should also check
1039 that LDLM_FL_CP_REQD is not set.
1043 Description: Heavy nfs access might result in deadlocks
1044 Details : After ELC code landed, it is now improper to enqueue any mds
1045 locks under och_sem, because enqueue might want to decide to
1046 cancel open locks for same inode we are holding och_sem for.
1050 Description: Client eviction while running blogbench
1051 Details : A lot of unlink operations with concurrent I/O can lead to a
1052 deadlock causing evictions. To address the problem, the number of
1053 oustanding OST_DESTROY requests is now throttled to
1054 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
1055 callbacks are processed in priority.
1059 Description: enable ACLs on MDS by default
1060 Details : ACLs must be enabled on MDS by default.
1063 Frequency : PPC/PPC64 only
1065 Description: conflicts between asm-ppc64/types.h and lustre_types.h
1066 Details : fix duplicated definitions between asm-ppc64/types.h and
1067 lustre_types.h on PPC.
1070 Frequency : PPC/PPC64 only
1072 Description: asm-ppc/segment.h does not exist
1073 Details : fix compile issue on PPC.
1077 Description: better handle error messages in extents code
1080 Frequency : RHEL4 only
1082 Description: mkfs is very slow on IA64/RHEL4
1083 Details : A performance regression has been discovered in the MPT Fusion
1084 driver between versions 3.02.73rh and 3.02.99.00rh. As a
1085 consequence, we have downgraded the MPT Fusion driver in the RHEL4
1086 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
1088 Severity : enhancement
1090 Description: SNMP support enhancement
1091 Details : Adding total number of sampled request for an MDS node in snmp
1094 Severity : enhancement
1096 Description: Optimize ldlm waiting list processing for PR extent locks
1097 Details : When processing waiting list for read extent lock and meeting read
1098 lock that is same or wider to it that is not contended, skip
1099 processing rest of the list and immediatelly return current
1100 status of conflictness, since we are guaranteed there are no
1101 conflicting locks in the rest of the list.
1105 Description: Time out and refuse to reconnect
1106 Details : When the failover node is the primary node, it is possible
1107 to have two identical connections in imp_conn_list. We must
1108 compare not conn's pointers but NIDs, otherwise we can defeat
1109 connection throttling.
1113 Description: port llog fixes from b1_6 into HEAD
1114 Details : Port llog reference couting and some llog cleanups from b1_6
1115 (bug 10800) into HEAD, for protect from panic and access to already
1116 free llog structures.
1120 Description: Detect stride IO mode in read-ahead
1121 Details : When a client does stride read, read-ahead should detect that and
1122 read-ahead pages according to the detected stride pattern.
1126 Description: data checksumming impacts single node performance
1127 Details : add support for several checksum algorithm. Currently, only CRC32
1128 and Adler-32 are supported. The checksum type can be changed on
1129 the fly via /proc/fs/lustre/osc/*/checksum_type.
1133 Description: use adler32 for page checksums
1134 Details : when available, use the Adler-32 algorithm instead of CRC32 for
1139 Description: build for x2 fails
1140 Details : fix compile issue on Cray systems.
1144 Description: Properly match for duplicate locks
1145 Details : Due to different lock order from skiplists code, we need to
1146 traverse entire list for now
1149 Frequency : only on PPC/SLES10
1151 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
1152 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
1153 be defined. Add a hack in mkfs_lustre.c to work around this compile
1158 Description: LASSERT on MDS when client holding flock lock dies
1159 Details : ldlm pool logic depends on number of granted locks equal to
1160 number of released locks which is not true for flock locks, so
1161 just exclude such locks from consideration.
1165 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
1166 Details : Use fsfilt_sync() for both the whole filesystem sync and
1167 individual file sync to eliminate dangerous inode locking
1168 with I_LOCK that can lead to a deadlock.
1172 Description: performance in 1.6.3
1173 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
1174 sure that 1MB requests are not fragmented by the block layer.
1176 Severity : enhancement
1178 Description: organize the server-side client stats on per-nid basis
1179 Details : Change the structure of stats under obdfilter and mds to
1187 The "uuid"s file would list the uuids of _active_ exports.
1188 And the clear entry is to clear all stats and stale nids.
1190 Severity : enhancement
1192 Description: eliminate client locks in face of contention
1193 Details : file contention detection and lockless i/o implementation
1194 for contended files.
1198 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
1201 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
1203 Description: MDS may lose file striping (and hence file data) in some cases
1204 Details : If there are additional extended attributes stored on the MDS,
1205 in particular ACLs, SELinux, or user attributes (if user_xattr
1206 is specified for the client mount options) then there is a risk
1207 of attribute loss. Additionally, the Lustre file striping
1208 needs to be larger than default (e.g. striped over all OSTs),
1209 and an additional attribute must be stored initially in the
1210 inode and then increase in size enough to be moved to the
1211 external attribute block (e.g. ACL growing in size) for file
1216 Description: skiplist implementation simplification
1217 Details : skiplists are used to group compatible locks on granted list
1218 that was implemented as tracking first and last lock of each lock group
1219 the patch changes that to using doubly linked lists
1223 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
1224 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
1225 because LASSERT on both the data supplied by a client, and the data
1226 on disk is dangerous and incorrect.
1228 Severity : enhancement
1230 Description: Slow truncate/writes to huge files at high offsets.
1231 Details : Directly associate cached pages to lock that protect those pages,
1232 this allows us to quickly find what pages to write and remove
1233 once lock callback is received.
1237 Description: more ldlm soft lockups
1238 Details : In ldlm_resource_add_lock(), call to ldlm_resource_dump()
1239 starve other threads from the resource lock for a long time in
1240 case of long waiting queue, so change the debug level from
1241 D_OTHER to the less frequently used D_INFO.
1243 Severity : enhancement
1245 Description: add -gid, -group, -uid, -user options to lfs find
1249 Description: Hung threads in invalidate_inode_pages2_range
1250 Details : The direct IO path doesn't call check_rpcs to submit a new RPC once
1251 one is completed. As a result, some RPCs are stuck in the queue
1256 Description: filter threads hungs on waiting journal commit
1257 Details : Cleanup filter group llog code, then only filter group llog will
1258 be only created in the MDS/OST syncing process.
1262 Description: Procfs and llog threads access destoryed import sometimes.
1263 Details : Sync the import destoryed process with procfs and llog threads by
1264 the import refcount and semaphore.
1266 Severity : enhancement
1268 Description: openlock cache of b1_6 port to HEAD
1273 Description: kernel BUG at ldiskfs2_ext_new_extent_cb
1274 Details : If insertion of an extent fails, then discard the inode
1275 preallocation and free data blocks else it can lead to duplicate
1280 Description: don't always update ctime in ext3_xattr_set_handle()
1281 Details : Current xattr code updates the inode ctime in ext3_xattr_set_handle.
1282 In some cases the ctime should not be updated, for example for
1283 2.0->1.8 compatibility it is necessary to delete an xattr and it
1284 should not update the ctime.
1288 Bugzilla : 15713/16362
1289 Description: Assertion in iopen_connect_dentry in 1.6.3
1290 Details : looking up an inode via iopen with the wrong generation number can
1291 populate the dcache with a disconneced dentry while the inode
1292 number is in the process of being reallocated. This causes an
1293 assertion failure in iopen since the inode's dentry list contains
1294 both a connected and disconnected dentry.
1298 Description: assertion failure in ldlm_handle2lock()
1299 Details : fix a race between class_handle_unhash() and class_handle2object()
1300 introduced in lustre 1.6.5 by bug 13622.
1305 Description: Kernel BUG: sd_iostats_bump: unexpected disk index
1306 Details : remove the limit of 256 scsi disks in the sd_iostat patch
1311 Description: oops in sd_iostats_seq_show()
1312 Details : unloading/reloading the scsi low level driver triggers a kernel
1313 bug when trying to access the sd iostat file.
1318 Description: Kernel panics during QLogic driver reload
1319 Details : REQ_BLOCK_PC requests are not handled properly in the sd iostat
1320 patch, causing memory corruption.
1325 Description: journal_dev option does not work in b1_6
1326 Details : pass mount option during pre-mount.
1328 Severity : enhancement
1330 Description: Add a FIEMAP(FIle Extent MAP) ioctl
1331 Details : FIEMAP ioctl will allow an application to efficiently fetch the
1332 extent information of a file. It can be used to map logical blocks
1333 in a file to physical blocks in the block device.
1337 Description: LDLM soft lockups - improvement
1338 Details : It is be possible to send the lock handle along with each read
1339 or write request because the client is already doing a lock match
1340 itself so there isn't any reason the OST should have to re-do that
1343 --------------------------------------------------------------------------------
1345 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
1347 * Support for kernels:
1348 2.6.5-7.283 (SLES 9),
1349 2.6.9-55.EL (RHEL 4),
1350 2.6.16.46-0.14 (SLES 10),
1351 2.6.18.8 vanilla (kernel.org)
1352 * Client support for unpatched kernels:
1353 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
1354 2.6.16 - 2.6.22 vanilla (kernel.org)
1355 * Due to recently discovered recovery problems, we do not recommend
1356 using patchless RHEL 4 clients with this or any earlier release.
1357 * Recommended e2fsprogs version: 1.39.cfs8
1358 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
1359 * Starting with this release, the ldiskfs backing filesystem required
1360 by Lustre is now in its own package, lustre-ldiskfs. This package
1361 should be installed. It is versioned separately from Lustre and
1362 may be released separately in future.
1366 Description: block reactivating mgc import until all deactivates complete
1367 Details : Fix race when failing back MDT/MGS to itself (testing)
1370 Frequency : at statup only
1372 Description: mds_lov_synchronize race leads to various problems
1373 Details : simultaneous MDT->OST connections at startup can cause the
1374 sync to abort, leaving the OSC in a bad state.
1376 Severity : enhancement
1378 Description: add optional extra BUILD_VERSION info
1379 Details : add a new environment variable (namely LUSTRE_VERS) which allows
1380 to override the lustre version.
1383 Frequency : 2.6.18 servers only
1385 Description: ll_kern_mount() doesn't release the module reference
1386 Details : The ldiskfs module reference count never drops down to 0
1387 because ll_kern_mount() doesn't release the module reference.
1392 Description: server LBUG when using old ost_num_threads parameter
1393 Details : Accept the old ost_num_threads parameter but warn that it
1394 is deprecated, and fix an off-by-one error that caused an LBUG.
1399 Description: Transient SCSI error results in persistent IO issue
1400 Details : iobuf->dr_error is not reinitialized to 0 between two
1404 Frequency : sometimes when underlying device returns I/O errors
1406 Description: OSTs not going read-only during write failures
1407 Details : OSTs are not remounted read-only when the journal commit threads
1408 get I/O errors because fsfilt_ext3 calls journal_start/stop()
1409 instead of the ext3 wrappers.
1413 Description: poor connect scaling with increasing client count
1414 Details : Don't run filter_grant_sanity_check for more than 100 exports
1415 to improve scaling for large numbers of clients.
1418 Frequency : SLES10 only
1420 Description: sanity-quota.sh quotacheck failed: rc = -22
1421 Details : Quotas cannot be enabled on SLES10.
1424 Frequency : liblustre clients only
1426 Description: getdirentries does not give error when run on compute nodes
1427 Details : getdirentries does not fail when the size specified as an argument
1428 is too small to contain at least one entry
1430 Severity : enhancement
1432 Description: Add LNET router traceability for debug purposes
1433 Details : If a checksum failure occurs with a router as part of the
1434 IO path, the NID of the last router that forwarded the bulk data
1435 is printed so it can be identified.
1440 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
1441 Details : Due to a race condition, liblustre clients were occasionally
1442 evicted incorrectly.
1444 Severity : enhancement
1446 Description: lfs setstripe use optional parameters instead of postional
1449 Severity : enhancement
1451 Description: Nanosecond timestamp support for ldiskfs
1452 Details : The on-disk ldiskfs filesystem has added support for nanosecond
1453 resolution timestamps. There is not yet support for this at
1454 the Lustre filesystem level.
1457 Frequency : during server recovery
1459 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
1460 Details : request with rq_no_resend flag not awake l_wait_event if they get a
1464 Frequency : nfs export on patchless client
1466 Description: connectathon hang when test nfs export over patchless client
1467 Details : Disconnected dentry cannot be found with lookup, so we do not need
1468 to unhash it or make it invalid
1471 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
1472 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
1473 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
1478 Description: open req refcounting wrong on reconnect
1479 Details : If reconnect happened between getting open reply from server and
1480 call to mdc_set_replay_data in ll_file_open, we will schedule
1481 replay for unreferenced request that we are about to free.
1482 Subsequent close will crash in variety of ways.
1483 Check that request is still eligible for replay in
1484 mdc_set_replay_data().
1489 Description: disable writes to filesystem when reading health_check file
1490 Details : the default for reading the health_check proc file has changed
1491 to NOT do a journal transaction and write to disk, because this
1492 can cause reads of the /proc file to hang and block HA state
1493 checking on a healthy but otherwise heavily loaded system. It
1494 is possible to return to the previous behaviour during configure
1495 with --enable-health-write.
1497 Severity : enhancement
1499 Description: 64-bit inode version
1500 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
1501 to the inode. This will be required for version-based recovery.
1506 Description: MDS fails to start if a duplicate client export is detected
1507 Details : in some rare cases it was possible for a client to connect to
1508 an MDS multiple times. Upon recovery the MDS would detect this
1509 and fail during startup. Handle this more gracefully.
1511 Severity : enhancement
1513 Description: Add -o localflock option to simulate old noflock
1515 Details : This will achieve local-only flock/fcntl locks
1521 Description: log_commit_thread vs filter_destroy race leads to crash
1522 Details : Take import reference before releasing llog record semaphore
1527 Description: Wrong request locking in request set processing
1528 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
1529 imp_delayed_list, in this place should be used imp_lock.
1532 Frequency : when reconnection
1534 Description: Grant Leak when osc reconnect to OST
1535 Details : When osc reconnect ost, OST(filter) should check whether it
1536 should grant more space to client by comparing fed_grant and
1537 cl_avail_grant, and return the granted space to client instead
1538 of "new granted" space, because client will call osc_init_grant
1539 to update the client grant space info.
1542 Frequency : when client reconnect to OST
1544 Description: Grant Leak when osc do resend and replay bulk write
1545 Details : When osc reconnect to OST, OST(filter)should clear grant info of
1546 bulk write request, because the grant info while be sync between
1547 OSC and OST when reconnect, and we should ignore the grant info
1548 these of resend/replay write req.
1553 Description: Grant space more than avaiable left space sometimes.
1554 Details : When then OST is about to be full, if two bulk writing from
1555 different clients came to OST. Accord the avaliable space of the
1556 OST, the first req should be permitted, and the second one
1557 should be denied by ENOSPC. But if the seconde arrived before
1558 the first one is commited. The OST might wrongly permit second
1559 writing, which will cause grant space > avaiable space.
1562 Frequency : when client is evicted
1564 Description: Grant might be wrongly erased when osc is evicted by OST
1565 Details : when the import is evicted by server, it will fork another
1566 thread ptlrpc_invalidate_import_thread to invalidate the
1567 import, where the grant will be set to 0. While the original
1568 thread will update the grant it got when connecting. So if
1569 the former happened latter, the grant will be wrongly errased
1570 because of this race.
1575 Description: Checking Stale with correct fid
1576 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
1577 to check whether it is stale, because sometimes, we want the
1578 enqueue happened anyway, and op_data.fid2 will not be initialized.
1580 Severity : enhancement
1582 Description: update patchless client
1583 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
1586 Frequency : only with 2.4 kernel
1588 Description: random memory corruption
1589 Details : size of struct ll_inode_info is to big for union inode.u and this
1590 can be cause of random memory corruption.
1595 Description: Memory leak in recovery
1596 Details : Lov_mds_md was not free in an error handler in mds_create_object.
1597 It should also check obd_fail before fsfilt_start, otherwise if
1598 fsfilt_start return -EROFS,(failover mds during mds recovery).
1599 then the req will return with repmsg->transno = 0 and rc = EROFS.
1600 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
1601 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
1602 be freed no matter whether fsfilt_commit success or not.
1605 Frequency : only with huge count clients
1607 Description: Prevents from taking the superblock lock in llap_from_page for
1609 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
1610 for llap_from_page call in ll_removepage prevents from taking the
1611 superblock lock for a soon died page.
1616 Description: Not check open intent error before release open handle
1617 Details : in some rare cases, the open intent error is not checked before
1618 release open handle, which may cause
1619 ASSERTION(open_req->rq_transno != 0), because it tries to release
1620 the failed open handle.
1625 Description: Set cat log bitmap only after create log success.
1626 Details : in some rare cases, the cat log bitmap is set too early. and it
1627 should be set only after create log success.
1631 Description: Accessing a block bevice can re-enable I/O when Lustre is
1632 tearing down a device.
1633 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
1638 Description: service threads may hog cpus when there are a lot of requests
1639 Details : Insert cond_resched to give other threads a chance to use some CPU
1644 Description: the cat log was not initialized in recovery
1645 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
1646 unlink log on mds will not be initialized until mds post
1647 recovery. And also in mds post recovery, the unlink log will
1648 initialization will be done asynchronausly, so there will be race
1649 between add unlink log and unlink log initialization.
1653 Description: brw_stats were being printed incorrectly
1654 Details : brw_stats were being printed as log2 but all of them were not
1655 recorded as log2. Also remove some code duplication arising from
1656 filter_tally_{read,write}.
1660 Frequency : rare, only in recovery.
1661 Description: ASSERTION(req->rq_type != LI_POISON) failed
1662 Details : imp_lock should be held while iterating over imp_sending_list for
1663 prevent destroy request after get timeout in ptlrpc_queue_wait.
1667 Description: replay-single.sh test 52 fails
1668 Details : A lock's skiplist need to be cleanup when it being unlinked
1669 from its resource list.
1673 Description: Short directio read returns full requested size rather than
1675 Details : Direct I/O operations should return actual amount of bytes
1676 transferred rather than requested size.
1678 Severity : enhancement
1680 Description: metadata RPC reduction (e.g. for rm performance)
1681 Details : decrease the amount of synchronous RPC between clients and servers
1682 by canceling conflicing lock before the operation on the client
1683 and packing thier handles into the main operation RPC to server.
1685 Severity : enhancement
1687 Description: Async OSC create to avoid the blocking unnecessarily.
1688 Details : If a OST has no remain object, system will block on the creating
1689 when need to create a new object on this OST. Now, ways use
1690 pre-created objects when available, instead of blocking on an
1691 empty osc while others are not empty. If we must block, we block
1692 for the shortest possible period of time.
1694 Severity : enhancement
1696 Description: refine locking for avoid write wrong info into lov_objid file
1697 Details : fix possible races with add new target and write/update data in
1700 --------------------------------------------------------------------------------
1702 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
1707 Frequency : on some architectures
1709 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
1710 Details : Uninitialized flags sometimes cause configuration commands to
1714 Frequency : patchless clients only
1716 Description: missing __iget() symbol export
1717 Details : The __iget() symbol export is missing. To avoid the need for
1718 this on patchless clients the deathrow inode reaper is turned
1719 off, and we depend on the VM to clean up old inodes. This
1720 dependency was during via the fix for bug 12181.
1722 --------------------------------------------------------------------------------
1724 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
1726 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
1727 INTEROPERATE with older versions automatically. In many cases a
1728 special upgrade step is needed. Please read the
1729 user documentation before upgrading any part of a live system.
1730 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
1731 version will not interoperate with 1.6 betas before beta5 (1.5.95).
1732 * WARNING: Lustre configuration and startup changes are required with
1733 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
1739 Severity : enhancement
1741 Description: MountConf
1742 Details : Lustre configuration is now managed via mkfs and mount
1743 commands instead of lmc and lconf. New obd types (MGS, MGC)
1744 are added for dynamic configuration management. See
1745 https://mail.clusterfs.com/wikis/lustre/MountConf for
1748 Severity : enhancement
1750 Description: dynamic OST addition
1751 Details : OSTs can now be added to a live filesystem
1753 Severity : enhancement
1755 Description: startup order invariance
1756 Details : MDTs and OSTs can be started in any order. Clients only
1757 require the MDT to complete startup.
1759 Severity : enhancement
1761 Description: parallel, asynchronous orphan cleanup
1762 Details : orphan cleanup is now performed in separate threads for each
1763 OST, allowing parallel non-blocking operation.
1765 Severity : enhancement
1767 Description: optimized stripe assignment
1768 Details : stripe assignments are now made based on ost space available,
1769 ost previous usage, and OSS previous usage, in order to try
1770 to optimize storage space and networking resources.
1772 Severity : enhancement
1774 Description: Permanently set tunables
1775 Details : All writable /proc/fs/lustre tunables can now be permanently
1776 set on a per-server basis, at mkfs time or on a live system.
1778 Severity : enhancement
1780 Description: Lustre message v2
1781 Details : Add lustre message format v2.
1783 Severity : enhancement
1785 Description: client OST exclusion list
1786 Details : Clients can be started with a list of OSTs that should be
1787 declared "inactive" for known non-responsive OSTs.
1791 Description: SPEC SFS validation failure on NFS v2 over lustre.
1792 Details : Changes the blocksize for regular files to be 2x RPC size,
1793 and not depend on stripe size.
1795 Severity : enhancement
1797 Description: Multiple MD RPCs in flight.
1798 Details : Further unserialise some read-only MDS RPCs - learn about intents.
1799 To avoid overly-overloading MDS, introduce a limit on number of
1800 MDS RPCs in flight for a single client and add /proc controls
1801 to adjust this limit.
1803 Severity : enhancement
1805 Description: client read/write statistics
1806 Details : Add client read/write call usage stats for performance
1807 analysis of user processes.
1808 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
1809 file access. extents_stats shows chunk size distribution.
1810 extents_stats_per_process show chunk size distribution per
1813 Severity : enhancement
1815 Description: mds statistics
1816 Details : Add detailed mds operations statistics in
1817 /proc/fs/lustre/mds/*/stats.
1821 Description: Failure of copying files with lustre special EAs.
1822 Details : Client side always return success for setxattr call for lustre
1823 special xattr (currently only "trusted.lov").
1828 Description: Refcount LNET uuids
1829 Details : The global LNET uuid list grew linearly with every startup;
1830 refcount repeated list entries instead of always adding to
1833 Severity : enhancement
1835 Description: Dynamic service threads
1836 Details : Within a small range, start extra service threads
1837 automatically when the request queue builds up.
1840 Frequency : mixed-endian client/server environments
1842 Description: mixed-endian crashes
1843 Details : The new msg_v2 system had some failures in mixed-endian
1846 Severity : enhancement
1848 Description: Easy OST removal
1849 Details : OSTs can be permanently deactivated with e.g. 'lctl
1850 conf_param lustre-OST0001.osc.active=0'
1852 Severity : enhancement
1854 Description: MGS proc entries
1855 Details : Added basic proc entries for the MGS showing what filesystems
1858 Severity : enhancement
1860 Description: provide MGS failover
1861 Details : Added config lock reacquisition after MGS server failover.
1863 Severity : enhancement
1865 Description: add Linux 2.4 support
1866 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
1870 Description: a large application tries to do I/O to the same resource and dies
1871 in the middle of it.
1872 Details : Check the req->rq_arrival time after the call to
1873 ost_brw_lock_get(), but before we do anything about
1874 processing it & sending the BULK transfer request. This
1875 should help move old stale pending locks off the queue as
1876 quickly as obd_timeout.
1879 Frequency : when an incorrect nid is specified during startup
1881 Description: ptlrpc connect to non-existant node causes kernel crash
1882 Details : LNET can't be re-entered from an event callback, which
1883 happened when we expire a message after the export has been
1884 cleaned up. Instead, hand the zombie cleanup off to another
1887 Severity : enhancement
1889 Description: plain/inodebits lock performance improvement
1890 Details : Grouping plain/inodebits in granted list by their request modes
1891 and bits policy, thus improving the performance of search through
1895 Frequency : only if OST filesystem is corrupted
1897 Description: client incorrectly hits assertion in ptlrpc_replay_req()
1898 Details : for a short time RPCs with bulk IO are in the replay list,
1899 but replay of bulk IOs is unimplemented. If the OST filesystem
1900 is corrupted due to disk cache incoherency and then replay is
1901 started it is possible to trip an assertion. Avoid putting
1902 committed RPCs into the replay list at all to avoid this issue.
1905 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
1907 Description: System hang on startup
1908 Details : This bug allowed the liblustre (e.g. catamount) client to
1909 return to the app before handling all startup RPCs. This
1910 could leave the node unresponsive to lustre network traffic
1911 and manifested as a server ptllnd timeout.
1913 Severity : enhancement
1915 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
1916 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
1917 boolean to control whether to print peer debug info when a
1918 client's RPC times out.
1921 Frequency : only for kernels with patches from Lustre below 1.4.3
1923 Description: Remove old rdonly API
1924 Details : Remove old rdonly API which unused from at least lustre 1.4.3
1927 Frequency : only for devices with external journals
1929 Description: Set external device read-only also
1930 Details : During a commanded failover stop, we set the disk device
1931 read-only while the server shuts down. We now also set any
1932 external journal device read-only at the same time.
1935 Frequency : when upgrading from 1.4 while trying to change parameters
1937 Description: The wrong (new) MDC name was used when setting parameters for
1938 upgraded MDT's. Also allows changing of OSC (and MDC)
1939 parameters if --writeconf is specified at tunefs upgrade time.
1942 Frequency : when setting specific ost indicies
1944 Description: QOS code breaks on skipped indicies
1945 Details : Add checks for missing OST indicies in the QOS code, so OSTs
1946 created with --index need not be sequential.
1948 Severity : enhancement
1950 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
1951 Details : The uninit_groups feature works in conjunction with the kernel
1952 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
1953 up the pass1 processing of e2fsck. This is a read-only feature
1954 in ldiskfs2 only, so older kernels and current ldiskfs cannot
1955 mount filesystems that have had this feature enabled.
1957 Severity : enhancement
1959 Description: Improve multi-block allocation algorithm to avoid fragmentation
1960 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1961 allocation locality and avoid filesystem fragmentation.
1963 ------------------------------------------------------------------------------
1965 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
1967 * Support for kernels:
1968 2.4.21-47.0.1.EL (RHEL 3)
1969 2.6.5-7.283 (SLES 9)
1970 2.6.9-42.0.10.EL (RHEL 4)
1971 2.6.12.6 vanilla (kernel.org)
1972 2.6.16.27-0.9 (SLES 10)
1973 * Recommended e2fsprogs version: 1.39.cfs5
1975 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1979 Frequency : occasional, depends on client load and configuration
1980 Bugzilla : 12181, 12203
1981 Description: data loss for recently-modified files
1983 Details : In some cases it is possible that recently written or created
1984 files may not be written to disk in a timely manner (this should
1985 normally be within 30s unless client IO load is very high).
1986 The problem appears as zero-length files or files that are a
1987 multiple of 1MB in size after a client crash or client eviction
1988 that are missing data at the end of the file.
1990 This problem is more likely to be hit on clients where files are
1991 repeatedly created and unlinked in the same directory, clients
1992 have a large amount of RAM, have many CPUs, the filesystem has
1993 many OSTs, the clients are rebooted frequently, and/or the files
1994 are not accessed by other nodes after being written.
1996 The presence of the problem can be detected by looking at
1997 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
1998 smaller than the second (nr_unused) then dirty files will not
1999 be flushed automatically to disk. "sync; sleep 10" should be
2000 run several times on the node before unmounting it to update
2001 Lustre (this is also safe to run on nodes without this problem).
2003 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
2004 that can cause this same problem, so customers using that kernel
2005 also need to update the kernel in addition to Lustre. In order
2006 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
2008 It is normal that files written just before a client crash (less
2009 than 30s) may not yet have been flushed to disk, even for local
2013 Frequency : frequent on thin XT3 nodes
2015 Description: UUID collision on thin XT3 Linux nodes
2016 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
2017 randomly, since we relied on an insufficiently-seeded PRNG.
2022 Description: OSS hangs after "All ost request buffers busy"
2023 Details : A deadlock between quota and journal operations caused OSS
2024 hangs after printing "All ost request buffers busy."
2027 Frequency : always on liblustre builds
2029 Description: Cleanup compiler warnings on liblustre
2032 Frequency : always on liblustre builds on XT3
2034 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
2038 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
2039 > 32000 subdirectories
2040 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
2041 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
2042 subdirectory count crosses 32000. This will aid e2fsck to
2043 correctly handle more than 32000 subdirectories.
2046 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
2048 Description: System hang on startup
2049 Details : This bug allowed the liblustre (e.g. catamount) client to
2050 return to the app before handling all startup RPCs. This
2051 could leave the node unresponsive to lustre network traffic
2052 and manifested as a server ptllnd timeout.
2054 Severity : enhancement
2056 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
2057 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
2058 boolean to control whether to print peer debug info when a
2059 client's RPC times out.
2064 Description: make O_SYNC working on 2.6 kernels
2065 Details : 2.6 kernels use different method for mark pages for write,
2066 so need add a code to lustre for O_SYNC work.
2071 Description: Failure to close file and release space on NFS
2072 Details : Put inode details into lock acquired in ll_intent_file_open.
2073 Use mdc_intent_lock in ll_intent_open to properly
2074 detect all kind of errors unhandled by mdc_enqueue.
2079 Description: proc file read during shutdown sometimes raced obd removal,
2081 Details : Add lock to prevent obd access after proc file removal.
2084 Frequency : Only for files larger than 4GB on 32-bit clients.
2086 Description: improperly doing page alignment of locks
2087 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
2088 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
2093 Description: RPCs being resent when they shouldn't be
2094 Details : Some RPCs that should not be resent are being resent. This
2095 can cause inconsistencies in the RPC state machine. Do not
2096 resend such requests.
2099 Frequency : rare, only with NFS export
2101 Description: Crash on NFS re-export node
2102 Details : under very unusual load conditions an assertion is hit in
2103 ll_intent_file_open()
2106 Frequency : only if OST filesystem is corrupted
2108 Description: client incorrectly hits assertion in ptlrpc_replay_req()
2109 Details : for a short time RPCs with bulk IO are in the replay list,
2110 but replay of bulk IOs is unimplemented. If the OST filesystem
2111 is corrupted due to disk cache incoherency and then replay is
2112 started it is possible to trip an assertion. Avoid putting
2113 committed RPCs into the replay list at all to avoid this issue.
2118 Description: large O_DIRECT requests fail under memory pressure/fragmentation
2119 Details : Large single O_DIRECT read and write calls can fail to allocate
2120 a sufficiently large buffer to process the request. In case of
2121 allocation failure the allocation is retried with a smaller
2122 buffer and broken into smaller requests.
2124 Severity : enhancement
2126 Description: Add -o localflock option to simulate old noflock behaviour.
2127 Details : This will achieve local-only flock/fcntl locks coherentness.
2132 Description: versioning check is incomplete
2133 Details : Checking the version difference of client vs. server, report
2134 error if the gap is too big.
2139 Description: add support PG_writeback bit
2140 Details : add support for PG_writeback bit for Lustre, for more carefull
2141 work with page cache in 2.6 kernel. This also fix some deadlocks
2142 and remove hack for work O_SYNC with 2.6 kernel.
2144 Severity : enhancement
2146 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
2147 Details : The uninit_groups feature works in conjunction with the kernel
2148 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
2149 up the pass1 processing of e2fsck. This is a read-only feature
2150 in ldiskfs2 only, so older kernels and current ldiskfs cannot
2151 mount filesystems that have had this feature enabled.
2153 Severity : enhancement
2155 Description: Improve multi-block allocation algorithm to avoid fragmentation
2156 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
2157 allocation locality and avoid filesystem fragmentation.
2159 ------------------------------------------------------------------------------
2161 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
2163 * Support for kernels:
2164 2.6.9-42.0.3.EL (RHEL 4)
2165 2.6.5-7.276 (SLES 9)
2166 2.4.21-47.0.1.EL (RHEL 3)
2167 2.6.12.6 vanilla (kernel.org)
2168 2.6.16.21-0.8 (SLES10)
2169 * Recommended e2fsprogs version: 1.39.cfs2-0
2171 * The backwards-compatible /proc/sys/portals symlink has been removed
2172 in this release. Before upgrading, please ensure that you change
2173 any configuration scripts or /etc/sysctl.conf files that access
2174 /proc/sys/portals/* or sysctl portals.* to use the corresponding
2175 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
2176 in advance of the upgrade on any system running Lustre 1.4.6 or
2177 newer, since /proc/sys/lnet was added in that version.
2178 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
2182 Frequency : only when quota is used
2184 Description: avoid scanning export list for quota master
2185 Details : Change the algorithms to avoid scanning export list in order
2186 to improve the efficiency.
2189 Frequency : MDS failover only, very rarely
2191 Description: "went back in time" messages on mds failover
2192 Details : The greatest transno may be lost when the current operation
2193 finishes with an error (transno==0) and the client's last_rcvd
2194 record is over-written. Save the greatest transno in the
2195 mds_last_transno for this case.
2198 Frequency : always for specific kernels and striping counts
2200 Description: client may get "Matching packet too big" without ACL support
2201 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
2202 when trying to access files in certain configurations. The
2203 clients should in fact be denied when mounting because they do
2204 not understand ACLs.
2207 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
2209 Description: many clients connecting with IO in progress causes connect timeouts
2210 Details : Avoid synchronous journal commits to avoid delays caused by many
2211 clients connecting/disconnecting when bulk IO is in progress.
2212 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
2213 OST_IO_PORTAL to avoid delays behind potentially many pending
2217 Frequency : occasionally with multiple writers to a single file
2219 Description: shared writes to file may result in wrong size reported by stat()
2220 Details : Allow growing of kms when extent lock is cancelled
2223 Frequency : always with random mmap IO to multi-striped file
2225 Description: mmap write might be lost if we are writing to a 'hole' in stripe
2226 Details : Only if the hole is at the end of OST object so that kms is too
2227 small. Fix is to increase kms accordingly in ll_nopage.
2230 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
2232 Description: writes to a missing object would leak memory on the OST
2233 Details : If there is an inconsistency between the MDS and OST filesystems,
2234 such that the MDS references an object that doesn't exist, writes
2235 to that object will leak memory due to incorrect cleanup in the
2236 error handling path, eventually running out of memory on the OST.
2241 Description: Creating too long symlink causes lustre errors
2242 Details : Check symlink and name lengths before sending requests to MDS.
2245 Frequency : only if flock is enabled (not on by default)
2247 Description: posix locks not released on fd closure on 2.6.9+
2248 Details : We failed to add posix locks to list of inode locks on 2.6.9+
2249 kernels, this caused such locks not to be released on fd close and
2250 then assertions on fs unmount about still used locks.
2253 Frequency : MDS failover only, very rarely
2255 Description: clients may get ASSERTION(granted_lock != NULL)
2256 Details : When request was taking a long time, and a client was resending
2257 a getattr by name lock request. The were multiple lock requests
2258 with the same client lock handle and
2259 mds_getattr_name->fixup_handle_for_resent_request found one of the
2260 lock handles but later failed with ASSERTION(granted_lock != NULL).
2265 Description: handle->h_buffer_credits > 0, assertion failure
2266 Details : h_buffer_credits is zero after truncate, causing assertion
2267 failure. This patch extends the transaction or creates a new
2271 Frequency : NFS re-export or patchless client
2272 Bugzilla : 11179, 10796
2273 Description: Crash on NFS re-export node (__d_move)
2274 Details : We do not want to hash the dentry if we don't have a lock.
2275 But if this dentry is later used in d_move, we'd hit uninitialised
2276 list head d_hash, so we just do this to init d_hash field but
2277 leave dentry unhashed.
2280 Frequency : NFS re-export or patchless client
2282 Description: NFS exports has problem with symbolic link
2283 Details : lustre client didn't properly install dentry when re-exported
2284 to NFS or running patchless client.
2287 Frequency : NFS re-export or patchless client
2289 Description: Various nfs/patchless fixes.
2290 Details : fixes reuse disconected alias for lookup process - this fixes
2291 warning "find_exported_dentry: npd != pd",
2292 fix permission error with open files at nfs.
2293 fix apply umask when do revalidate.
2296 Frequency : occasional
2298 Description: Crash on NFS re-export node
2299 Details : calling clear_page() on the wrong pointer triggered oops in
2300 generic_mapping_read().
2303 Frequency : rarely, using O_DIRECT IO
2305 Description: unaligned directio crashes client with LASSERT
2306 Details : check for unaligned buffers before trying any requests.
2309 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
2311 Description: stale data returned from RAID cache
2312 Details : If only a small amount of IO is done to the RAID device before
2313 reading it again it is possible to get stale data from the RAID
2314 cache instead of reading it from disk.
2317 Frequency : always for sles10 kernel
2319 Description: sles10 support
2320 Details : ll_follow_link: compile fixes and using of nd_set_link
2321 under newer kernels.
2324 Frequency : depends on arch, kernel and compiler version, always on sles10
2327 Description: recursive or deep enough symlinks cause stack overflow
2328 Details : getting rid of large stack-allocated variable in
2332 Frequency : depends on hardware
2334 Description: lustre write performance loss in the SLES10 kernel
2335 Details : the performance loss is caused by using of write barriers in the
2336 ext3 code. The SLES10 kernel turns barrier support on by
2337 default. The fix is to undo that change for ldiskfs.
2339 ------------------------------------------------------------------------------
2341 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
2343 * Support for kernels:
2344 2.6.9-42.0.3EL (RHEL 4)
2345 2.6.5-7.276 (SLES 9)
2346 2.4.21-47.0.1.EL (RHEL 3)
2347 2.6.12.6 vanilla (kernel.org)
2351 Frequency : quota enabled and large files being deleted
2353 Description: releasing more than 4GB of quota at once hangs OST
2354 Details : If a user deletes more than 4GB of files on a single OST it
2355 will cause the OST to spin in an infinite loop. Release
2356 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
2361 Description: statfs data retrieved from /proc may be stale or zero
2362 Details : When reading per-device statfs data from /proc, in the
2363 {kbytes,files}_{total,free,avail} files, it may appear
2364 as zero or be out of date.
2367 Frequency : systems with MD RAID1 external journal devices
2369 Description: lconf's call to blkid is confused by RAID1 journal devices
2370 Details : Use the "blkid -l" flag to locate the MD RAID device instead
2371 of returning all block devices that match the journal UUID.
2374 Frequency : always, for aggregate stripe size over 4GB
2376 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
2377 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
2378 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
2381 Frequency : always if "lfs find" used on a local file/directory
2383 Description: "lfs find" segfaults if used on a local file/directory
2384 Details : The case where a directory component was not specified wasn't
2385 handled correctly. Handle this properly.
2388 Frequency : always on ppc64
2390 Description: the write to an ext3 filesystem mounted with mballoc got stuck
2391 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
2392 perform endianness conversion.
2395 Frequency : rarely (truncate to non-zero file size after write under load)
2396 Bugzilla : 10730, 10687
2397 Description: Files padded with zeros to next 4K multiple
2398 Details : With filesystems mounted using the "extents" option (2.6 kernels)
2399 it is possible that files that are truncated to a non-zero size
2400 immediately after being written are filled with zero bytes beyond
2401 the truncated size. No file data is lost.
2403 Severity : enhancement
2405 Description: Allow recovery/failover for liblustre clients.
2406 Details : liblustre clients were unaware of failover configurations until
2409 Severity : enhancement
2411 Description: user file locks should fail when not mounting with flock option
2412 Details : Set up an error-returning stub in ll_file_operations.lock field
2413 to prevent incorrect behaviour when client is mounted without
2414 flock option. Also, set up properly f_op->flock field for
2418 Frequency : always on ia64
2420 Description: "lfs df" loops on printing out MDS statfs information
2421 Details : The obd_ioctl_data was not initialized and in some systems
2422 this caused a failure during the ioctl that did not return
2423 an error. Initialize the struct and return an error on failure.
2426 Frequency : SLES 9 only
2428 Description: Error of copying files with lustre special EAs as root
2429 Details : Client side always return success for setxattr call for lustre
2430 special xattr (currently only "trusted.lov").
2433 Frequency : rarely on clusters with both ia64+i386 clients
2435 Description: ia64+i686 clients doing shared IO on the same file may LBUG
2436 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
2437 clients are doing concurrent writes to the same file it is
2438 possible that the ia64 clients may LASSERT because the OST
2439 extent locks are not PAGE_SIZE aligned. Ensure that grown
2440 locks are always aligned on the request boundary.
2443 Frequency : specific use, occasional
2445 Description: Overwriting in use executable truncates on-disk binary image
2446 Details : If one node attempts to overwrite an executable in use by
2447 another node, we now correctly return ETXTBSY instead of
2448 truncating the file.
2450 Severity : enhancement
2452 Description: Async OSC create to avoid the blocking unnecessarily.
2453 Details : If a OST has no remain object, system will block on the creating
2454 when need to create a new object on this OST. Now, ways use
2455 pre-created objects when available, instead of blocking on an
2456 empty osc while others are not empty. If we must block, we block
2457 for the shortest possible period of time.
2462 Description: chmod on Lustre root is propagated to other clients
2463 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
2464 invalid by the follow_mount time.
2467 Frequency : liblustre clients only
2469 Description: Race in 'instant cancel' lock handling could lead to such locks
2470 never to be granted in case of SMP MDS
2471 Details : Do not destroy not yet granted but cbpending locks in
2475 Frequency : replay/resend of open
2477 Description: non null lock assetion failure in mds_intent_policy
2478 Details : Trying to replay/resend lockless open requests resulted in
2479 mds_open() returning 0 with no lock. Now it sets a flag if
2480 a lock is going to be returned.
2482 Severity : enhancement
2484 Description: Checksum enhancements
2485 Details : New checksum enhancements allow for resending RPCs that failed
2488 Severity : enhancement
2490 Description: Tunables on number of dirty pages in cacche
2491 Details : Allow to set limit on number of dirty pages cached.
2496 Description: client crash on unmount - lock still has references
2497 Details : In some error handling cases it was possible to leak a lock
2498 reference on a client while accessing a file. This was not
2499 harmful to the client during operation, but would cause the
2500 client to crash when the filesystem is unmounted.
2503 Frequency : specific case, rare
2505 Description: ETXTBSY on mds though file not in use by client
2506 Details : ETXTBSY is no longer incorrectly returned when attempting to
2507 chmod or chown a directory that the user previously tried to
2508 execute or a currently-executing binary.
2511 Frequency : extremely rare except on liblustre-based clients
2513 Description: Lustre space not freed when files are deleted
2514 Details : Clean up open-unlinked files after client eviction. Previously
2515 the unlink was skipped and the files remained as orphans.
2520 Description: OST failure "would be an LBUG" in waiting_locks_callback()
2521 Details : In some cases it was possible to send a blocking callback to
2522 a client doing a glimpse, even though that client didn't get
2523 a lock granted. When the glimpse lock is cancelled on the OST
2524 the freed lock is left on the waiting list and corrupted the list.
2527 Frequency : all core dumps
2529 Description: Broke core dumps to lustre
2530 Details : Negative dentry may be unhashed if parent does not have UPDATE
2531 lock, but some callers, e.g. do_coredump, expect dentry to be
2532 hashed after successful create, hash it in ll_create_it.
2534 ------------------------------------------------------------------------------
2536 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
2538 * Support for kernels:
2539 2.6.9-42.0.2.EL (RHEL 4)
2540 2.6.5-7.276 (SLES 9)
2541 2.4.21-40.EL (RHEL 3)
2542 2.6.12.6 vanilla (kernel.org)
2546 Frequency : always on RHEL 3
2548 Description: Number of open files grows over time
2549 Details : The number of open files grows over time, whether or not
2550 Lustre is started. This was due to a filp leak introduced
2551 by one of our kernel patches.
2553 ------------------------------------------------------------------------------
2555 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
2557 * Support for kernels:
2558 2.6.9-42.EL (RHEL 4)
2559 2.6.5-7.276 (SLES 9)
2560 2.4.21-40.EL (RHEL 3)
2561 2.6.12.6 vanilla (kernel.org)
2566 Bugzilla : 5719, 9635, 9792, 9684
2567 Description: OST (or MDS) trips assertions in (re)connection under heavy load
2568 Details : If a server is under heavy load and cannot reply to new
2569 connection requests before the client resends the (re)connect,
2570 the connection handling code can behave badly if two service
2571 threads are concurrently handing separate (re)connections from
2572 the same client. Add better locking to the connection handling
2573 code, and ensure that only a single connection will be processed
2574 for a given client UUID, even if the lock is dropped.
2576 Severity : enhancement
2578 Description: add TCP zero-copy support to kernel
2579 Details : Add support to the kernel TCP stack to allow zero-copy bulk
2580 sends if the hardware supports scatter-gather and checksumming.
2581 This allows socklnd to do client-write and server-read more
2582 efficiently and reduce CPU utilization from skbuf copying.
2585 Frequency : only if NFS exporting from client
2587 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
2588 Details : If setting attributes on a file created under NFS that had
2589 never been opened it would be possible to oops the client
2590 if the file had no objects.
2593 Frequency : always for liblustre
2595 Description: liblustre client does MDS+OSTs setattr RPC for each write
2596 Details : When doing a write from a liblustre client, the client
2597 incorrectly issued an RPC to the MDS and each OST the file was
2598 striped over in order to update the timestamps. When writing
2599 with small chunks and many clients this could overwhelm the MDS
2600 with RPCs. In all cases it would slow down the write because
2601 these RPCs are unnecessary.
2603 Severity : enhancement
2605 Description: allow number of MDS service threads to be changed at module load
2606 Details : It is now possible to change the number of MDS service threads
2607 running. Adding "options mds mds_num_threads={N}" to the MDS's
2608 /etc/modprobe.conf will set the number of threads for the next
2609 time Lustre is restarted (assuming the "mds" module is also
2610 reloaded at that time). The default number of threads will
2611 stay the same, 32 for most systems.
2616 Description: OST crash if filesystem is unformatted or corrupt
2617 Details : If an OST is started on a device that has never been formatted
2618 or if the filesystem is corrupt and cannot even mount then the
2619 error handling cleanup routines would dereference a NULL pointer.
2624 Description: NULL pointer deref in llap_from_page.
2625 Details : get_cache_page_nowait can return a page with NULL (or otherwise
2626 incorrect) mapping if the page was truncated/reclaimed while it was
2627 searched for. Check for this condition and skip such pages when
2628 doing readahead. Introduce extra check to llap_from_page() to
2629 verify page->mapping->host is non-NULL (so page is not anonymous).
2632 Frequency : Sometimes when using sys_sendfile
2634 Description: "page not covered by a lock" warnings from ll_readpage
2635 Details : sendfile called ll_readpage without right page locks present.
2636 Now we introduced ll_file_sendfile that does necessary locking
2637 around call to generic_file_sendfile() much like we do in
2641 Frequency : with certain MDS communication failures at client mount time
2643 Description: NULL pointer deref after failed client mount
2644 Details : a client connection request may delayed by the network layer
2645 and not be sent until after the PTLRPC layer has timed out the
2646 request. If the client fails the mount immediately it will try
2647 to clean up before the network times out the request. Add a
2648 reference from the request import to the obd device and delay
2649 the cleanup until the network drops the request.
2652 Frequency : occasionally during client (re)connect
2654 Description: assertion failure during client (re)connect
2655 Details : processing a client connection request may be delayed by the
2656 client or server longer than the client connect timeout. This
2657 causes the client to resend the connection request. If the
2658 original connection request is replied in this interval, the
2659 client may trip an assertion failure in ptlrpc_connect_interpret()
2660 which thought it would be the only running connect process.
2663 Frequency : only with obd_echo servers and clients that are rebooted
2665 Description: kernel BUG accessing uninitialized data structure
2666 Details : When running an obd_echo server it did not start the ping_evictor
2667 thread, and when a client was evicted an uninitialized data
2668 structure was accessed. Start the ping_evictor in the RPC
2669 service startup instead of the OBD startup.
2671 Severity : enhancement
2672 Bugzilla : 10193 (patchless)
2673 Description: Remove dependency on various unexported kernel interfaces.
2674 Details : No longer need reparent_to_init, exit_mm, exit_files,
2675 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
2678 Frequency : rare (only users of deprecated and unsupported LDAP config)
2680 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
2681 Details : LDAP apparently contains 'lustreName' attributes instead of
2682 'name'. A simple remapping of the name is sufficient.
2685 Frequency : rare (only with non-default dump_on_timeout debug enabled)
2687 Description: waiting_locks_callback trips kernel BUG if client is evicted
2688 Details : Running with the dump_on_timeout debug flag turned on makes
2689 it possible that the waiting_locks_callback() can try to dump
2690 the Lustre kernel debug logs from an interrupt handler. Defer
2691 this log dumping to the expired_lock_main() thread.
2693 Severity : enhancement
2695 Description: Support NFS exporting on 2.6 kernels.
2696 Details : Implement non-rawops metadata methods for NFS server to use without
2697 changing NFS server code.
2700 Frequency : very rare (synthetic metadata workload only)
2702 Description: two racing renames might cause an MDS thread to deadlock
2703 Details : Running the "racer" program may cause one MDS thread to rename
2704 a file from being the source of a rename to being the target of
2705 a rename at exactly the same time that another thread is doing
2706 so, and the second thread has already enqueued these locks after
2707 doing a lookup of the target and is trying to relock them in
2708 order. Ensure that we don't try to re-lock the same resource.
2711 Frequency : only very large systems with liblustre clients
2713 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
2714 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
2715 all OSTs in parallel. This allows the eviction of stale liblustre
2716 clients to proceed much faster than if they were done in series,
2717 and also offers similar improvements for other set_info RPCs.
2722 Description: excessive CPU usage during initial read phase on client
2723 Details : During the initial read phase on a client, it would agressively
2724 retry readahead on the file, consuming too much CPU and impacting
2725 performance (since 1.4.5.8). Improve the readahead algorithm
2726 to avoid this, and also improve some other common cases (read
2727 of small files in particular, where "small" is files smaller than
2728 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
2733 Description: MDS crash when receiving packet with unknown intent.
2734 Details : Do not LBUG in unknown intent case, just return -EFAULT
2736 Severity : enhancement
2737 Bugzilla : 9293, 9385
2738 Description: MDS RPCs are serialised on client. This is unnecessary for some.
2739 Details : Do not serialize getattr (non-intent version) and statfs.
2742 Frequency : occasional, when OST network is overloaded/intermittent
2744 Description: client evicted by OST after bulk IO timeout
2745 Details : If a client sends a bulk IO request (read or write) the OST
2746 may evict the client if it is unresposive to its data GET/PUT
2747 request. This is incorrect if the network is overloaded (takes
2748 too long to transfer the RPC data) or dropped the OST GET/PUT
2749 request. There is no need to evict the client at all, since
2750 the pinger and/or lock callbacks will handle this, and the
2751 client can restart the bulk request.
2754 Frequency : Always when mmapping file with no objects
2756 Description: client crashes when mmapping file with no objects
2757 Details : Check that we actually have objects in a file before doing any
2758 operations on objects in ll_vm_open, ll_vm_close and
2764 Description: Request leak when working with deleted CWD
2765 Details : Introduce advanced request refcount tracking for requests
2766 referenced from lustre intent.
2768 Severity : Enhancement
2770 Description: Cache open file handles on client.
2771 Details : MDS now will return special lock along with openhandle, if
2772 requested and client is allowed to hold openhandle, even if unused,
2773 until such a lock is revoked. Helps NFS a lot, since NFS is opening
2774 closing files for every read/write openration.
2776 Severity : Enhancement
2778 Description: Cache open negative dentries on client when possible.
2779 Details : Guard negative dentries with UPDATE lock on parent dir, drop
2780 negative dentries on lock revocation.
2785 Description: Remounting a client read-only wasn't possible with a zconf mount
2786 Details : It wasn't possible to remount a client read-only with llmount.
2788 Severity : enhancement
2789 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
2790 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
2791 MPICH is included to add Lustre-specific ADIO interfaces.
2792 This is based closely on the UFS ADIO layer and only differs
2793 in file creation, in order to allow the OST striping to be set.
2794 This is user-contributed code and not supported by CFS.
2799 Description: extended inode attributes (immutable, append-only) work improperly
2800 when 2.4 and 2.6 kernels are used on client/server or vice versa
2801 Details : Introduce kernel-independent values for these flags.
2803 Severity : enhancement
2806 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
2807 Details : Many of the /proc/ tunables can only be tuned at a megabyte
2808 granularity. Now, Fractional MB granularity is be supported,
2809 this is very useful for low memory system.
2811 Severity : enhancement
2813 Description: Getattr by fid
2814 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
2815 locks, avoids extra getattr rpc requests to MDS, allows '/' to
2816 have locks and avoids getattr rpc requests for it on every stat.
2819 Frequency : Always, for filesystems larger than 2TB
2821 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
2822 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
2823 filesystems larger than 2TB to be mounted with mballoc enabled.
2826 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
2828 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
2829 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
2830 filesystems larger than 2TB is mounted then the kernel will
2831 silently corrupt the start of the filesystem. CONFIG_LBD is
2832 enabled for all CFS-supported kernels, but the possibility of
2833 this happening with a modified kernel config exists.
2835 Severity : enhancement
2837 Description: add client O_DIRECT support for 2.6 kernels
2838 Details : It is now possible to do O_DIRECT reads and writes to files
2839 in the Lustre client mountpoint on 2.6 kernel clients.
2841 Severity : enhancement
2843 Description: parallel glimpse, setattr, statfs, punch, destroy requests
2844 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
2845 parallel, not waiting for response from every OST before sending
2846 a rpc to the next OST.
2851 Description: setattr vs write race when updating file timestamps
2852 Details : Client processes that update a file timestamp into the past
2853 right after writing to the file (e.g. tar) it is possible that
2854 the updated file modification time can be reset to the current
2855 time due to a race between processing the setattr and write RPC.
2857 Severity : enhancement
2859 Description: Bring 'lfs find' closer in line with regular Linux find.
2860 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
2861 -print0 options and obtains all the needed info through the lustre
2864 Severity : enhancement
2866 Description: support up to 1024 configured devices on one node
2867 Details : change obd_dev array from statically allocated to dynamically
2868 allocated structs as they are first used to reduce memory usage
2873 Description: Flush dirty partially truncated pages during truncate
2874 Details : Immediatelly flush partially truncated pages in filter_setattr,
2875 this way we completely avoid having any pages in page cache on OST
2876 and can retire ugly workarounds during writes to flush such pages.
2881 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
2882 Details : protect inode from truncation within vfs_unlink() context
2883 just take a reference before calling vfs_unlink() and release it
2884 when parent's i_sem is free.
2889 Description: last_id value checked outside lock on OST caused LASSERT failure
2890 Details : If there were multiple MDS->OST object precreate requests in
2891 flight, it was possible that the OST's last object id was checked
2892 outside a lock and incorrectly tripped an assertion. Move checks
2893 inside locks, and discard old precreate requests.
2896 Frequency : always, if extents are used on OSTs
2898 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
2899 Details : OSTs using the extents format would not zero the high 16 bits of
2900 the index physical block number. This is not a problem for any
2901 OST filesystems smaller than 16TB, and no kernels support ext3
2902 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
2903 new/modified files) and can be fixed for existing filesystems
2904 with e2fsprogs-1.39-cfs1.
2909 Description: import connection selection may be incorrect if timer wraps
2910 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
2911 import connections to be ignored if the 32-bit jiffies counter
2912 wraps. Use a 64-bit jiffies counter.
2915 Frequency : very large clusters immediately after boot
2917 Description: LNET request buffers exhausted under heavy short-term load
2918 Details : If a large number of client requests are generated on a service
2919 that has previously never seen so many requests it is possible
2920 that the request buffer growth cannot keep up with the spike in
2921 demand. Instead of dropping incoming requests, they are held in
2922 the LND until the RPC service can accept more requests.
2925 Frequency : Sometimes during replay
2927 Description: Assertion failure in ll_local_open after replay.
2928 Details : If replay happened on an open request reply before we were able
2929 to set replay handler, reply will become not swabbed tripping the
2930 assertion in ll_local_open. Now we set the handler right after
2931 recognising of open request
2934 Frequency : very rare
2936 Description: kernel reports "badness in vsnprintf"
2937 Details : Reading from the "recovery_status" /proc file in small chunks
2938 may cause a negative length in lprocfs_obd_rd_recovery_status()
2939 call to vsnprintf() (which is otherwise harmless). Exit early
2940 if there is no more space in the output buffer.
2942 Severity : enhancement
2944 Description: clear OBD RPC statistics by writing to them
2945 Details : It is now possible to clear the OBD RPC statistics by writing
2946 to the "stats" file.
2951 Description: Client mtime is not the same on different clients after utimes
2952 Details : In some cases, the client was using the utimes() syscall on
2953 a file cached on another node. The clients now validate the
2954 ctime from the MDS + OSTs to determine which one is right.
2959 Description: Inability to activate failout mode
2960 Details : lconf script incorrectly assumed that in pythong string's numeric
2961 value is used in comparisons.
2964 Frequency : always with multiple stripes per file
2966 Description: Inefficient object allocation for mutli-stripe files
2967 Details : When selecting which OSTs to stripe files over, for files with
2968 a stripe count that divides evenly into the number of OSTs,
2969 the MDS is always picking the same starting OST for each file.
2970 Return the OST selection heuristic to the original design.
2975 Description: mount failures may take full timeout to return an error
2976 Details : Under some heavy load conditions it is possible that a
2977 failed mount can wait for the full obd_timeout interval,
2978 possibly several minutes, before reporting an error.
2979 Instead return an error as soon as the status is known.
2981 Frequency : quota enabled and large files being deleted
2983 Description: releasing more than 4GB of quota at once hangs OST
2984 Details : If a user deletes more than 4GB of files on a single OST it
2985 will cause the OST to spin in an infinite loop. Release
2986 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
2991 Description: statfs data retrieved from /proc may be stale or zero
2992 Details : When reading per-device statfs data from /proc, in the
2993 {kbytes,files}_{total,free,avail} files, it may appear
2994 as zero or be out of date.
2997 Frequency : systems with MD RAID1 external journal devices
2999 Description: lconf's call to blkid is confused by RAID1 journal devices
3000 Details : Use the "blkid -l" flag to locate the MD RAID device instead
3001 of returning all block devices that match the journal UUID.
3004 Frequency : always, for aggregate stripe size over 4GB
3006 Description: assertion fails when trying to use 4GB stripe size
3007 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
3008 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
3011 Frequency : always on ppc64
3013 Description: the first write on an ext3 filesystem with mballoc got stuck
3014 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
3015 perform endianness conversion.
3017 ------------------------------------------------------------------------------
3019 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
3021 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
3022 INTEROPERATE with older versions automatically. Please read the
3023 user documentation before upgrading any part of a live system.
3024 * WARNING: Lustre networking configuration changes are required with
3025 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
3028 * Support for kernels:
3029 2.6.9-22.0.2.EL (RHEL 4)
3030 2.6.5-7.244 (SLES 9)
3031 2.6.12.6 vanilla (kernel.org)
3034 Severity : enhancement
3035 Bugzilla : 7981/8208
3036 Description: Introduced Lustre Networking (LNET)
3037 Details : LNET is new networking infrastructure for Lustre, it includes
3038 a reorganized network configuration mode (see the user
3039 documentation for full details) as well as support for routing
3040 between different network fabrics. Lustre Networking Devices
3041 (LNDs) for the supported network fabrics have also been
3042 created for this new infrastructure.
3044 Severity : enhancement
3045 Description: Introduced Access control lists
3046 Details : clients can set ACLs on files and directories in order to have
3047 more fine-grained permissions than the standard Unix UGO+RWX.
3048 The MDS must be started with the "-o acl" mount option.
3050 Severity : enhancement
3051 Description: Introduced filesystem quotas
3052 Details : Administrators may now establish per-user quotas on the
3055 Severity : enhancement
3057 Description: Configuration change for the XT3
3058 The PTLLND is now used to run Lustre over Portals on the XT3
3059 The configure option(s) --with-cray-portals are no longer used.
3060 Rather --with-portals=<path-to-portals-includes> is used to
3061 enable building on the XT3. In addition to enable XT3 specific
3062 features the option --enable-cray-xt3 must be used.
3067 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
3068 Details : A race between allocating a new llcd and re-getting the llcd_lock
3069 allowed another thread to grab newly-allocated llcd.
3071 Severity : enhancement
3073 Description: 2.6 OST async journal commit and locking fix to improve performance
3074 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
3075 2.6 kernels are now async as they already were in 2.4 kernels so
3076 that they can commit concurrently with the network bulk transfer.
3077 For block-allocated files the filter allocation semaphore is held
3078 to avoid filesystem fragmentation during allocation. BKL lock
3079 removed for 2.6 xattr operations where it is no longer needed.
3084 Description: lconf incorrectly determined whether two IP networks could talk
3085 Details : In some more complicated routing and multiple-network
3086 configurations, lconf will avoid trying to make a network
3087 connection to a disjoint part of the IP space. It was doing the
3088 math incorrectly for one set of cases.
3093 Description: Fix for potential infinite loop processing records in an llog.
3094 Details : If an llog record is corrupted/zeroed, it is possible to loop
3095 forever in llog_process(). Validate the llog record length
3096 and skip the remainder of the block on error.
3099 Frequency : occasional (liblustre only)
3101 Description: liblustre could not open files whose last component is a symlink
3102 Details : sysio_path_walk() would incorrectly pass the open intent to
3103 intermediate path components.
3106 Frequency : rare (liblustre only with non-standard tuning)
3107 Bugzilla : 7201 (7350)
3108 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
3109 Details : llu_lookup_finish_locks() tries to set lock data on a lock
3110 after it has been released, only do this for referenced locks
3112 Severity : enhancement
3114 Description: specifying an (invalid) directory default stripe_size of -1
3115 would reset the directory default striping
3116 Details : stripe_size -1 was used internally to signal directory stripe
3117 removal, now use "all default" to signal dir stripe removal
3118 as a directory striping of "all default" is not useful
3121 Frequency : common for large clusters running liblustre clients
3123 Description: doing an ls when liblustre clients are running is slow
3124 Details : sending a glimpse AST to a liblustre client waits for every AST
3125 to time out, as liblustre clients will not respond. Since they
3126 cannot cache data we refresh the OST lock LVB from disk instead.
3128 Severity : enhancement
3130 Description: doing an ls at the same time as file IO can be slow
3131 Details : enqueue and other "small" requests can be blocked behind many
3132 large IO requests. Create a new OST IO portal for non-IO
3133 requests so they can be processed faster.
3136 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
3138 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
3139 created file with mode 000
3140 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
3141 allow an ftruncate() as a non-root user to a file with mode 000.
3142 Lustre now respects this flag to disable mode checks when
3143 truncating a file owned by the user
3146 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
3149 Description: Revoking locks from clients that went dead or catatonic might take
3151 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
3152 cancellation of such locks instant on servers without waiting for
3153 any reply from clients. Clients drops these locks when cancel
3154 notification from server is received without replying.
3157 Frequency : liblustre-only, when liblustre client dies or becomes busy
3159 Description: Doing ls on Linux clients can take a long time with active
3161 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
3162 granting such locks to it in the first place if possible. Locks
3163 are taken by proxy on the OST during the read or write and
3164 dropped immediately afterward. Add connect flags handling, do
3165 not grant locks to liblustre clients for glimpse ASTs.
3167 Severity : enhancement
3169 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
3170 Details : Existing read-ahead algorithm is tuned for the case of streamlined
3171 sequential reads and behaves badly with applications doing random
3172 reads. Improve it by reading ahead at least read region, and
3173 avoiding excessive large RPC for small reads.
3175 Severity : enhancement
3177 Description: Creating more than 1000 files for a single job may cause a load
3178 imbalance on the OSTs if there are also a large number of OSTs.
3179 Details : qos_prep_create() uses an OST index reseed value that is an
3180 even multiple of the number of available OSTs so that if the
3181 reseed happens in the middle of the object allocation it will
3182 still utilize the OSTs as uniformly as possible.
3187 Description: OST or MDS may oops in ping_evictor_main()
3188 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
3189 but doesn't restart at beginning of obd_exports_timed list
3192 Severity : enhancement
3194 Description: improve by-nid export eviction on the MDS and OST
3195 Details : allow multiple exports with the same NID to be evicted at one
3196 time without re-searching the exports list.
3199 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
3201 Description: MDS may oops in groups_free()
3202 Details : in rare race conditions a newly allocated group_info struct is
3203 freed again, and this can be NULL. The 2.4 compatibility code
3204 for groups_free() checked for a NULL pointer, but 2.6 did not.
3207 Frequency : common for liblustre clients doing little filesystem IO
3208 Bugzilla : 9352, 7313
3209 Description: server may evict liblustre clients accessing contended locks
3210 Details : if a client is granted a lock or receives a completion AST
3211 with a blocking AST already set it would not reply to the AST
3212 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
3215 Frequency : lfs setstripe, only systems with more than 160 OSTs
3217 Description: unable to set striping with a starting offset beyond OST 160
3218 Details : llapi_create_file() incorrectly limited the starting stripe
3219 index to the maximum single-file stripe count.
3222 Frequency : LDAP users only
3224 Description: lconf did not handle in-kernel recovery with LDAP properly
3225 Details : lconf/LustreDB get_refs() is searching the wrong namespace
3227 Severity : enhancement
3229 Description: bind OST threads to NUMA nodes to improve performance
3230 Details : all OST threads are uniformly bound to CPUs on a single NUMA
3231 node and do their allocations there to localize memory access
3233 Severity : enhancement
3235 Description: llmount can determine client NID directly from Myrinet (GM)
3236 Details : the client NID code from gmnalnid was moved directly into
3237 llmount, removing the need to use this or specifying the
3238 client NID explicitly when mounting GM clients with zeroconf
3241 Frequency : if client is started with down MDS
3243 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
3244 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
3245 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
3246 ptlrpc_import_delayed_req() because we didn't check if the
3247 request was interrupted, and we also didn't break out of the
3248 event loop if there was no timeout
3253 Description: data loss during non-page-aligned writes to a single file from
3254 both multiple nodes and multiple threads on one node at same time
3255 Details : updates to KMS and lsm weren't protected by common lock. Resulting
3256 inconsistency led to false short-reads, that were cached and later
3257 used by ->prepare_write() to fill in partially written page,
3258 leading to data loss.
3261 Frequency : always, if lconf --abort_recovery used
3263 Description: lconf --abort_recovery fails with 'Operation not supported'
3264 Details : lconf was attempting to abort recovery on the MDT device and not
3267 Severity : enhancement
3269 Description: remove cleanup logs
3270 Details : replace lconf-generated cleanup logs with lustre internal
3271 cleanup routines. Eliminates the need for client-cleanup and
3274 Severity : enhancement
3276 Description: add support for EAs (user and system) on lustre filesystems
3277 Details : it is now possible to store extended attributes in the Lustre
3278 client filesystem, and with the user_xattr mount option it
3279 is possible to allow users to store EAs on their files also
3281 Severity : enhancement
3283 Description: Add possibility (config option) to show minimal available OST free
3285 Details : When compiled with --enable-mindf configure option, statfs(2)
3286 (and so, df) will return least minimal free space available from
3287 all OSTs as amount of free space on FS, instead of summary of
3288 free spaces of all OSTs.
3290 Severity : enhancement
3292 Description: do not expand extent locks acquired on OST-side
3293 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
3294 by server: they are not cached anyway.
3297 Frequency : when mmap is used/binaries executed from Lustre
3299 Description: Unmmap pages before throwing them away from read cache.
3300 Details : llap_shrink cache now attempts to unmap pages before discarding
3301 them (if unmapping failed - do not discard). SLES9 kernel has
3302 extra checks that trigger if this unmapping is not done first.
3307 Description: lconf didn't resolve symlinks before checking to see whether a
3308 given mountpoint was already in use
3311 Frequency : when migrating failover services
3312 Bugzilla : 6395, 9514
3313 Description: When migrating a subset of services from a node (e.g. failback
3314 from a failover service node) the remaining services would
3315 time out and evict clients.
3316 Details : lconf --force (implied by --failover) sets the global obd_timeout
3317 to 5 seconds in order to quickly disconnect, but this caused
3318 other RPCs to time out too quickly. Do not change the global
3319 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
3321 Severity : enhancement
3322 Frequency : if MDS is started with down OST
3323 Bugzilla : 9439,5706
3324 Description: Allow startup/shutdown of an MDS without depending on the
3325 availability of the OSTs.
3326 Details : Asynchronously call mds_lov_synchronize during MDS startup.
3327 Add appropriate locking and lov-osc refcounts for safe
3328 cleaning. Add osc abort_inflight calls in case the
3329 synchronize never started.
3332 Frequency : occasional (Cray XT3 only)
3334 Description: root not authorized to access files in CRAY_PORTALS environment
3335 Details : The client process capabilities were not honoured on the MDS in
3336 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
3337 been accessed by an authorized user then root was able to access
3338 the file on the local client also. The root user capabilities
3339 are now allowed on the MDS, as this environment has secure UID.
3342 Frequency : occasional
3344 Description: ldiskfs "too long searching" message happens too often
3345 Details : A debugging message (otherwise harmless) prints too often on
3346 the OST console. This has been reduced to only happen when
3347 there are fragmentation problems on the filesystem.
3352 Description: Division by zero in statfs when all OSCs are inactive
3353 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
3354 lov_statfs divides by value returned by lov_get_stripecnt().
3358 Bugzilla : 9489, 3273
3359 Description: First write from each client to each OST was only 4kB in size,
3360 to initialize client writeback cache, which caused sub-optimal
3361 RPCs and poor layout on disk for the first writen file.
3362 Details : Clients now request an initial cache grant at (re)connect time
3363 and so that they can start streaming writes to the cache right
3364 away and always do full-sized RPCs if there is enough data.
3365 If the OST is rebooted the client also re-establishes its grant
3366 so that client cached writes will be honoured under the grant.
3371 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
3372 Details : Now I/O RPCs go to different portal number and (presumably) fast
3373 lock requests (and glimses) and other RPCs get their own service
3374 threads pool that should be able to service those RPCs
3377 Severity : enhancement
3379 Description: Ability to exchange lustre version between client and servers and
3380 issue warnings at client side if client is too old. Also for
3381 liblustre clients there is ability to refuse connection of too old
3383 Details : New 'version' field is added to connect data structure that is
3384 filled with version info. That info is later checked by server and
3388 Frequency : rare, liblustre only.
3389 Bugzilla : 9296, 9581
3390 Description: Two simultaneous writes from liblustre at offset within same page
3391 might proceed at the same time overwriting eachother with stale
3393 Details : I/O lock withing llu_file_prwv was released too early, before data
3394 actually was hitting the wire. Extended lock-holding time until
3395 server acknowledges receiving data.
3398 Frequency : extremely rare. Never observed in practice.
3400 Description: avoid generating lustre_handle cookie of 0.
3401 Details : class_handle_hash() generates handle cookies by incrementing
3402 global counter, and can hit 0 occasionaly (this is unlikely, but
3403 not impossible, because initial value of cookie counter is
3404 selected randonly). Value of 0 is used as a sentinel meaning
3405 "unassigned handle" --- avoid it. Also coalesce two critical
3406 sections in this function into one.
3408 Severity : enhancement
3410 Description: allow liblustre clients to delegate truncate locking to OST
3411 Details : To avoid overhead of locking, liblustre client instructs OST to
3412 take extent lock in ost_punch() on client's behalf. New connection
3413 flag is added to handle backward compatibility.
3415 Severity : enhancement
3416 Bugzilla : 4928, 7341, 9758
3417 Description: allow number of OST service threads to be specified
3418 Details : a module parameter allows the number of OST service threads
3419 to be specified via "options ost ost_num_threads={N}" in the
3420 OSS's /etc/modules.conf or /etc/modprobe.conf.
3424 Bugzilla : 6146, 9635, 9895
3425 Description: servers crash with bad pointer in target_handle_connect()
3426 Details : In rare cases when a client is reconnecting it was possible that
3427 the connection request was the last reference for that export.
3428 We would temporarily drop the export reference and get a new
3429 one, but this may have been the last reference and the export
3430 was just destroyed. Get new reference before dropping old one.
3432 Severity : enhancement
3433 Frequency : if client is started with failover MDS
3435 Description: Allow multiple MDS hostnames in the mount command
3436 Details : Try to read the configuration from all specified MDS
3437 hostnames during a client mount in case the "primary"
3440 Severity : enhancement
3442 Description: Stop sending data to evicted clients as soon as possible.
3443 Details : Check if the client we are about to send or are sending data to
3444 was evicted already. (Check is done every second of waiting,
3445 for which l_wait_event interface was extended to allow checking
3446 of exit condition at specified intervals).
3449 Frequency : rare, normally only when NFS exporting is done from client
3451 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
3453 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
3456 Frequency : always, if srand() is called before liblustre initialization
3458 Description: Liblustre uses system PRNG disturbing its usage by user application
3459 Details : Introduce internal to lustre fast and high-quality PRNG for
3460 lustre usage and make liblustre and some other places in generic
3461 lustre code to use it.
3463 Severity : enhancement
3464 Bugzilla : 9477, 9557, 9870
3465 Description: Verify that the MDS configuration logs are updated when xml is
3466 Details : Check if the .xml configuration logs are newer than the config
3467 logs stored on the MDS and report an error if this is the case.
3468 Request --write-conf, or allow starting with --old_conf.
3470 Severity : enhancement
3472 Description: Handle symlinks in the path when checking if Lustre is mounted.
3473 Details : Resolve intermediate symlinks when checking if a client has
3474 mounted a filesystem to avoid duplicate client mounts.
3479 Description: lconf can hit an error exception but still return success.
3480 Details : The lconf command catches the Command error exception at the top
3481 level script context and will exit with the associated exit
3482 status, but doesn't ensure that this exit status is non-zero.
3487 Description: failure of ptlrpc thread startup can cause oops
3488 Details : Starting a ptlrpc service thread can fail if there are a large
3489 number of threads or the server memory is very fragmented.
3490 Handle this without oopsing.
3493 Frequency : always, only if liblustre and non-default acceptor port was used
3495 Description: liblustre cannot connect to servers with non-default acceptor port
3496 Details : tcpnal_set_default_params() was not called and was therefore
3497 ignoring the environment varaible TCPNAL_PORT, as well as other
3498 TCPNAL_ environment variables
3503 Description: two objects could be created on the same OST for a single file
3504 Details : If an OST is down, in some cases it was possible to create two
3505 objects on a single OST for a single file. No problems other
3506 than potential performance impact and spurious error messages.
3510 Bugzilla : 5681, 9562
3511 Description: Client may oops in ll_unhash_aliases
3512 Details : Client dcache may become inconsistent in race condition.
3513 In some cases "getcwd" can fail if the current directory is
3519 Description: Inode refcounting problems in NFS export code
3520 Details : link_raw functions used to call d_instantiate without obtaining
3521 extra inode reference first.
3525 Bugzilla : 9942, 9903
3526 Description: Referencing freed requests leading to crash, memleaks with NFS.
3527 Details : We used to require that call to ll_revalidate_it was always
3528 followed by ll_lookup_it. Also with revalidate_special() it is
3529 possible to call ll_revalidate_it() twice for the same dentry
3530 even if first occurence returned success. This fix changes semantic
3531 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
3532 reference on a request referred from the intent.
3533 ll_intent_release() then releases such a request.
3536 Frequency : rare, normally benchmark loads only
3538 Description: unlinked inodes were kept in memory on the client
3539 Details : If a client is repeatedly creating and unlinking files it
3540 can accumulate a lot of stale inodes in the inode slab cache.
3541 If there is no other client load running this can cause the
3542 client node to run out of memory. Instead flush old inodes
3543 from client cache that have the same inode number as a new inode.
3546 Frequency : SLES9 2.6.5 kernel and long filenames only
3547 Bugzilla : 9969, 10379
3548 Description: utime reports stale NFS file handle
3549 Details : SLES9 uses out-of-dentry names in some cases, which confused
3550 the lustre dentry revalidation. Change it to always use the
3554 Frequency : rare, unless heavy write-truncate concurrency is continuous
3555 Bugzilla : 4180, 6984, 7171, 9963, 9331
3556 Description: OST becomes very slow and/or deadlocked during object unlink
3557 Details : filter_destroy() was holding onto the parent directory lock
3558 while truncating+unlinking objects. For very large objects this
3559 may block other threads for a long time and slow overall OST
3560 responsiveness. It may also be possible to get a lock ordering
3561 deadlock in this case, or run out of journal credits because of
3562 the combined truncate+unlink. Solution is to do object truncate
3563 first in one transaction without parent lock, and then do the
3564 final unlink in a new transaction with the parent lock. This
3565 reduces the lock hold time dramatically.
3568 Frequency : rare, 2.4 kernels only
3570 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
3571 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
3572 before unmounting their filesystem in order to avoid deadlock.
3573 The kernel_locked() function in 2.4 kernels only checks whether
3574 the kernel lock is held, not whether it is this process that is
3575 holding it as 2.6 kernels do.
3580 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
3581 Details : The client ptlrpc code may be trying to reconnect to a down
3582 server before a previous connection attempt has timed out.
3583 Increase the reconnect interval to be longer than the connection
3584 timeout interval to avoid sending duplicate connections to
3588 Frequency : echo_client brw_test command
3590 Description: fix echo_client to work with OST preallocated code
3591 Details : OST preallocation code (5137) didn't take echo_client IO path
3592 into account: echo_client calls filter methods outside of any
3593 OST thread and, hence, there is no per-thread preallocated
3594 pages and buffers to use. Solution: hijack pga pages for IO. As
3595 a byproduct, this avoids unnecessary data copying.
3599 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
3600 Description: Client can oops in mdc_commit_close() after open replay
3601 Details : It was possible for the MDS to return an open request with no
3602 transaction number in mds_finish_transno() if the client was
3603 evicted, but without actually returning an error. Clients
3604 would later try to replay that open and may trip an assertion
3605 Simplify the client close codepath, and always return an error
3606 from the MDS in case the open is not successful.
3609 Frequency : rare, 2.6 OSTs only
3611 Description: OST may deadlock under high load on fragmented files
3612 Details : If there was a heavy load and highly-fragmented OST filesystems
3613 it was possible to have all the OST threads deadlock waiting on
3614 allocation of biovecs, because the biovecs were not released
3615 until the entire RPC IO was completed. Instead, release biovecs
3616 as soon as they are complete to ensure forward IO progress.
3618 Severity : enhancement
3620 Description: Support for specifying external journal device at mount
3621 Details : If an OST or MDS device is formatted with an external journal
3622 device, this device major/minor is stored in the ext3 superblock
3623 and may not be valid for failover. Allow detecting and
3624 specifying the external journal at mount time.
3629 Description: Mounting an MDS with pending unlinked files may cause oops
3630 Details : target_finish_recovery() calls mds_postrecov() which returned
3631 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
3632 considers this an error and immediately begins cleaning up the
3633 lov, just after starting the mds_lov process
3635 Severity : enhancement
3637 Description: Implement 'lfs df' to report actual free space on per-OST basis
3638 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
3639 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
3640 usage of objects; '-h' to report in human readable format.
3642 ------------------------------------------------------------------------------
3644 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
3651 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
3652 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
3653 at startup during orphan unlinking. Instead, skip buddy update
3654 before setup, as it will be regenerated after recovery is complete.
3659 Description: If an OST is inactive, its locks might reference stale inodes.
3660 Details : lov_change_cbdata() must iterate over all namespaces, even if
3661 they are inactive to clear inode references from the lock.
3663 Severity : enhancement
3664 Frequency : occasional, if non-standard max_dirty_mb used
3666 Description: Client will block write RPCs if not enough grant
3667 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
3668 then the client will block writes while waiting for another RPC
3669 to complete instead of consuming its dirty limit. With change
3670 we get improved performance when max_dirty_mb is small.
3672 Severity : enhancement
3673 Bugzilla : 3389, 6253
3674 Description: Add support for supplementary groups on the MDS.
3675 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
3676 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
3677 lookups for user supplementary groups into a cache.
3681 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
3682 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
3683 for liblustre O_EXCL is enforced by MDS.
3687 Description: readdir never returns NULL in liblustre.
3688 Details : Corrected llu_iop_getdirentries logic, to return offset of next
3689 dentry in struct dirent.
3693 Frequency : liblustre only, depends on application IO pattern
3694 Description: liblustre clients evicted if not contacting servers
3695 Details : Don't put liblustre clients into the ping_evictor list, so
3696 they will not be evicted by the pinger ever.
3698 Severity : enhancement
3700 Description: Add ability to evict clients by NID from MDS.
3701 Details : By echoing "nid:$NID" string into
3702 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
3703 $NID would be instantly evicted from this MDS and from all active
3704 OSTs connected to it.
3708 Description: Do not query file size twice, somewhat slowing stat(2) calls.
3709 Details : lookup_it_finish() used to query file size from OSTs that was not
3714 Description: service threads change working directory to that of init
3715 Details : Starting lustre service threads may pin the working directory
3716 of the parent thread, making that filesystem busy. Threads
3717 now change to the working directory of init to avoid this.
3721 Frequency : during shutdown only
3722 Description: shutdown with a failed MDS or OST can cause unmount to hang
3723 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
3728 Frequency : 2.6 only
3729 Description: chmod/chown may include an extra supplementary group
3730 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
3731 supplementary group and if none is specified this is used.
3734 Bugzilla : 5479 (6816)
3736 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
3737 Details : If lookup is in progress on a file that is unlinked we might try
3738 to revalidate the inode and fail in revalidate after lookup is
3739 complete and ll_file_open() enqueues the open again but
3740 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
3743 Frequency : always, if lconf --abort_recovery used
3745 Description: lconf --abort_recovery fails with 'Operation not supported'
3746 Details : lconf was attempting to abort recovery on the MDT device and not
3749 ------------------------------------------------------------------------------
3751 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
3756 Frequency : rare (only unsupported configurations with a node running as an
3758 Bugzilla : 6514, 5137
3759 Description: Mounting a Lustre file system on a node running as an OST could
3761 Details : OSTs now preallocates memory needed to write out data at
3762 startup, instead of when needed, to avoid having to
3763 allocate memory in possibly low memory situations.
3764 Specifically, if the file system is mounted on on OST,
3765 memory pressure could force it to try to write out data,
3766 which it needed to allocate memory to do. Due to the low
3767 memory, it would be unable to do so and the node would
3768 become unresponsive.
3770 Severity : enhancement
3772 Description: Addition of lconf --service command line option
3773 Details : lconf now accepts a '--service <arg>' option, which is
3774 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
3776 Severity : enhancement
3778 Description: Failover mode is now the default for OSTs.
3779 Details : By default, OSTs will now run in failover mode. To return to
3780 the old behaviour, add '--failout' to the lmc line for OSTs.
3782 Severity : enhancement
3784 Description: Health checks are now provided for MDS and OSTs
3785 Details : Additional detailed health check information on MSD and OSTs
3786 is now provided through the procfs health_check value.
3789 Frequency : occasional, depends on IO load
3791 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
3792 after numerous create/delete cycles
3793 Details : The ext3 inode allocation policy would not allocate new inodes
3794 very well on the OSTs because there are no new directories
3795 being created. Instead we look for groups with free space if
3796 the parent directories are nearly full.
3801 Description: Network or server problems during mount may cause partially
3802 mounted clients instead of returning an error.
3803 Details : The config llog parsing code may overwrite the error return
3804 code during mount error handling, returning success instead
3810 Description: MDS can fail to allocate large reply buffers
3811 Details : After long uptimes the MDS can fail to allocate large reply
3812 buffers (e.g. zconf client mount config records) due to memory
3813 fragmentation or consumption by the buffer cache. Preallocate
3814 some large reply buffers so that these replies can be sent even
3815 under memory pressure.
3819 Frequency : rare (liblustre)
3820 Description: fsx running with liblustre complained that using truncate() to
3821 extend the file doesn't work. This patch corrects that issue.
3822 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
3823 ATTR_SIZE and lsm use in llu_setattr_raw.
3827 Frequency : rare, only 2.6 kernels
3828 Description: Unusual file access patterns on the MDS may result in inode
3829 data being lost in very rare circumstances.
3830 Details : Bad interaction between the ea-in-inode patch and the "no-read"
3831 code in the 2.6 kernel caused the inode and/or EA data not to
3832 be read from disk, causing single-file corruption.
3836 Frequency : rare, only 2.6 filesystems using extents
3837 Description: Heavy concurrent write and delete load may cause data corruption.
3838 Details : It was possible under high-load situations to have an extent
3839 metadata block in the block device cache from a just-unlinked
3840 file overwrite a newly-allocated data block. We now unmap any
3841 metadata buffers that alias just-allocated data blocks.
3845 Frequency : filesystems with default stripe_count larger than 77
3846 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
3847 Details : lconf specifies an inode size of 4096 bytes when the default
3848 stripe_count is larger than 77. This conflicts with the default
3849 inode density of 1 per 4096 bytes. Allocate smaller inodes in
3850 this case to avoid pinning too much memory for large EAs.
3852 ------------------------------------------------------------------------------
3854 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
3859 Frequency : rare (extremely heavy IO load with hundreds of clients)
3861 Description: Client is evicted, gets IO error writing to file
3862 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
3863 caused clients to be evicted for AST timeouts. The fixes in
3864 bug 5192 mean we no longer need to have such short AST timeouts
3865 so ldlm_timeout has been increased.
3868 Frequency : occasional during --force or --failover shutdown under load
3869 Bugzilla : 5949, 4834
3870 Description: Server oops/LBUG if stopped with --force or --failover under load
3871 Details : a collection of import/export refcount and cleanup ordering
3872 issues fixed for safer force cleanup
3875 Frequency : only filesystems larger than 120 OSTs
3876 Bugzilla : 5990, 6223
3877 Description: lfs getstripe would oops on a very large filesystem
3878 Details : lov_getconfig used kfree on vmalloc'd memory
3881 Frequency : only filesystems exporting via NFS to Solaris 10 clients
3882 Bugzilla : 6242, 6243
3883 Description: reading from files that had been truncated to a non-zero size
3884 but never opened returned no data
3885 Details : ll_file_read() reads zeros from no-object files to EOF
3890 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
3891 Details : There's little harm in aborting MDS/OSS recovery and letting it
3892 try again, so I removed the LASSERT and return an error instead.
3894 Severity : enhancement
3896 Description: New debugging infrastructure for tracking down data corruption
3897 Details : The I/O checksum code was replaced to: (a) control it at runtime,
3898 (b) cover more of the client-side code path, and (c) try to narrow
3899 down where problems occurred
3903 Bugzilla : 3819, 4364, 4397, 6313
3904 Description: Racing close and eviction MDS could cause assertion in mds_close
3905 Details : It was possible to get multiple mfd references during close and
3906 client eviction, leading to one thread referencing a freed mfd.
3908 Severity: : enhancement
3909 Bugzilla : 3262, 6359
3910 Description: Attempts to reconnect to servers are now more aggressive.
3911 Details : This builds on the enhanced upcall-less recovery that was added
3912 in 1.4.2. When trying to reconnect to servers, clients will
3913 now try each server in the failover group every 10 seconds. By
3914 default, clients would previously try one server every 25 seconds.
3919 Description: After recovery, certain operations trigger a failed
3920 assertion on a client.
3921 Details : Failing over an mds, using lconf -d --failover, while a
3922 client was doing a readdir() call would cause the client to
3923 LBUG after recovery completed and the readdir() was resent.
3925 Severity : enhancement
3927 Description: Default groups are now added by lconf
3928 Details : You can now run lconf --group <servicename> without having to
3929 manually add groups with lmc.
3932 Frequency : occasional
3934 Description: Nodes with an elan id of 0 trigger a failed assertion
3937 Frequency : always when accessing e.g. tty/console device nodes
3939 Description: tty and some other devices nodes cannot be used on lustre
3940 Details : file's private_data field is used by device data and lustre
3941 values in there got lost. New field was added to struct file to
3942 store fs-specific private data.
3945 Frequency : when exporting Lustre via NFS
3947 Description: NFSD failed occasionally when looking up a path component
3948 Details : NFSD is looking up ".." which was broken in ext3 directories
3949 that had grown large enough to become hashed.
3952 Frequency : Clusters with multiple interfaces not on the same subnet
3954 Description: Nodes will repeatedly try to reconnect to an interface which it
3955 cannot reach and report an error to the log.
3956 Details : Extra peer list entries will be created by lconf with some peers
3957 unreachable. lconf now validates the peer before adding it.
3960 Frequency : Only if a default stripe is set on the filesystem root.
3962 Description: Setting a default stripe on the filesystem root prevented the
3963 filesystem from being remounted.
3964 Details : The client was sending extra request flags in the root getattr
3965 request and did not allocate a reply buffer for the dir EA.
3968 Frequency : occasional, higher if lots of files are accessed by one client
3969 Bugzilla : 6159, 6097
3970 Description: Client trips assertion regarding lsm mismatch/magic
3971 Details : While revalidating inodes the VFS looks up inodes with ifind()
3972 and in rare cases can find an inode that is being freed.
3973 The ll_test_inode() code will free the lsm during ifind()
3974 when it finds an existing inode and then the VFS later attaches
3975 this free lsm to a new inode.
3979 Bugzilla : 6422, 7030
3980 Description: MDS deadlock between mkdir and client eviction
3981 Details : Creating a new file via mkdir or mknod (starting a transaction
3982 and getting the ns lock) can deadlock with client eviction
3983 (gets ns lock and trying to finish a synchronous transaction).
3986 Frequency : occasional
3987 Description: While starting a server, the fsfilt_ext3 module could not be
3989 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
3990 kernels. Previously, lconf would still use the ext3 name
3991 when trying to load modules. Now, it will correctly use
3992 ext3 on 2.4 and ldiskfs on 2.6.
3994 Severity : enhancement
3995 Description: The default stripe count has been changed to 1
3996 Details : The interpretation of the default stripe count (0, to lfs
3997 or lmc) has been changed to mean striping across a single
3998 OST, rather than all available. For general usage we have
3999 found a stripe count of 1 or 2 works best.
4001 Severity : enhancement
4002 Description: Add support for compiling against Cray portals.
4003 Details : Conditional compiling for some areas that are different
4007 Frequency : occasional
4008 Bugzilla : 6409, 6834
4009 Description: Creating files with an explicit stripe count may lead to
4010 a failed assertion on the MDS
4011 Details : If some OSTs are full or unavailable, creating files may
4012 trigger a failed assertion on the MDS. Now, Lustre will
4013 try to use other servers or return an error to the
4017 Frequency : occasional
4019 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
4020 caused lock timeout during readahead (since 1.4.2).
4021 Details : Processes doing readahead might match a lock that hasn't been
4022 granted yet if there are overlapping and conflicting lock
4023 requests. The readahead process waits on ungranted lock
4024 (original lock is CBPENDING), while OST waits for that process
4025 to cancel CBPENDING read lock and eventually evicts client.
4027 Severity : enhancement
4029 Description: Initial enabling of flock support for clients
4030 Details : Implements fcntl advisory locking and file status functions.
4031 This feature is provided as an optional mount flag (default
4032 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
4033 locking are implemented yet, and those that are are not guaranteed
4034 to be completely correct in production environments.
4035 mount -t lustre -o [flock|noflock] ...
4038 Frequency : occasional
4040 Description: OSTs running 2.4 kernels but with extents enabled might trip an
4041 assertion in the ext3 JBD (journaling) layer.
4042 Details : The b_committed_data struct is protected by the big kernel lock
4043 in 2.4 kernels, serializing journal_commit_transaction() and
4044 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
4045 access to this struct. In 2.6 kernels there is finer grained
4046 locking to improve SMP performance of the JBD layer.
4050 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
4055 Description: merge and cleanup kernel patches.
4058 -----------------------------------------------------------------------------
4060 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
4062 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
4063 versions of Lustre. Please update all servers and clients to
4064 version 1.4.2 or later at the same time. You must also run
4065 "lconf --write-conf {config}.xml" on the MDS while it is stopped
4066 to update the configuration logs.
4068 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
4069 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
4070 - swab llog records of type '0' so we get proper header size/idx (5861)
4071 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
4072 - fix rename of one directory over another leaking an inode (5953)
4073 - avoid SetPageDirty on 2.6 (5981)
4074 - don't re-add just-being-destroyed locks to the waiting list (5653)
4075 - when creating new directories, inherit the parent's custom
4076 striping settings if present parent (3048)
4077 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
4078 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
4079 - don't hold client locks on temporary worklist from l_lru (5666)
4080 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
4081 - automatically evict dead clients (5921)
4082 - Update file size properly in create+truncate+fstat case (6196)
4083 - Do not unhash mountpoint dentries, do not allow removal of
4085 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
4086 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
4087 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
4088 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
4089 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
4090 - Correctly handle reads of files with no objects (6243)
4091 - lctl recover will also mark a device active if deactivate used (5933)
4093 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
4094 - allow --write-conf on an MDS with different nettype than client (5619)
4095 - don't write config llogs to MDS for mounts not from that MDS (5617)
4096 - lconf should create multiple TCP connections from a client (5201)
4097 - init scripts are now turned off by default; run chkconfig --on
4098 lustre and chkconfig --on lustrefs to use them
4099 - upcalls are no longer needed for clients to recover to failover
4101 - add --abort-recovery option to lconf to abort recovery on device
4103 - add support for an arbitrary number of OSTs (3026)
4104 - Quota support protocol changes.
4105 - forward compatibility changes to wire structs (6007)
4106 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
4107 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
4108 - improved "lustre status" script
4109 - initialize blocksize for non-regular files (6062)
4110 - added --disable-server and --disable-client configure options (5782)
4111 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
4112 - Vanilla 2.4.29 support
4113 - increase maximum number of obd devices to 520 (6242)
4114 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
4115 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
4116 SLES 9 2.6.5 kernels
4117 - limit stripes per file to 160 (the maximum EA size) (6093)
4119 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
4122 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
4123 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
4124 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
4125 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
4126 - small ext3 extents cleanups and fixes (5733)
4127 - improved mballoc code, several small races and bugs fixed (5733, 5638)
4128 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
4129 - avoid needless client->OST connect, fix handle mismatch (5317)
4130 - fix DLM error path that led to out-of-sync client, long delays (5779)
4131 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
4132 - fix several locking issues related to i_size (5492,5624,5654,5672)
4133 - don't move pending lock onto export if it is already evicted (5683)
4134 - fix kernel oops when creating .foo in unlinked directory (5548)
4135 - fix deadlock in obdfilter statistics vs. object create (5811)
4136 - use time_{before,after} to avoid timer jiffies wrap (5882)
4137 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
4138 - Do not leak request if server was not able to process it (5154)
4139 - If mds_open unable to find parent dir, make that negative lookup(5154)
4140 - don't create new directories with extent-mapping (5909, 5936)
4142 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
4143 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
4144 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
4145 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
4146 - support for RHEL4 kernel on i686 (5773)
4147 - provide error messages when incompatible logs are encountered (5898)
4149 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
4150 * version 1.4.0.10 (1.4.1 release candidate 1)
4152 - don't keep a lock reference when lock is not granted (4238)
4153 - unsafe list practices (rarely) led to infinite eviction loop (4908)
4154 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
4155 - drop import inflight refcount on signal_completed_replay error (5255)
4156 - unlock page after async write error during send (3677)
4157 - handle missing objects in filter_preprw_read properly (5265)
4158 - no transno return for symlink open, don't save no-trasno open (3440)
4159 - don't try to complete elan receive that already failed (4012)
4160 - free RPC server reply state on error (5406)
4161 - clean up thread from ptlrpc_start_thread() on error (5160)
4162 - readahead could read extra page into cache that wasn't ejected (5388)
4163 - prevent races in class_attach/setup/cleanup/detach (5260)
4164 - don't dereference de->d_inode after l_dput of de (5458)
4165 - use "int" for stripe value returned from lock_to_stripe (5544)
4166 - mballoc allocation and error-checking fixes in 2.6 (5504)
4167 - block device patches to fix I/O request sizes in 2.6 (5482)
4168 - look up hostnames for IB nals (5602)
4169 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
4170 - don't start multiple acceptors for the same port (5277)
4171 - fix incorrect LASSERT in mds_getattr_name (5635)
4172 - export a proc file for general "ping" checking (5628)
4173 - fix "lfs check" to not block when the MDS is down (5628)
4175 - service request history (4965)
4176 - put {ll,lov,osc}_async_page structs in a single slab (4699)
4177 - create an "evict_client" /proc entry on OSTs, like the MDS has
4178 - fix mount usage message, return errors per mount(8) (5168)
4179 - change grep [] to grep "[]" in tests so they work in more UMLs
4180 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
4181 - remove ancient LOV_MAGIC_V0 EA support (5047)
4182 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
4183 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
4184 - allow readahead allocations to fail when low on memory (5383)
4185 - mmap locking landed again, after considerable improvement (2828)
4186 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
4188 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
4191 - send OST transaction number in read/write reply to free req (4966)
4192 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
4193 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
4194 - the watchdog thread now runs as interruptible (5246)
4195 - flock/lockf fixes (but it's still disabled, pending 5135)
4196 - don't use EXT3 constants in llite code (5094)
4197 - memory shortage at startup could cause assertion (5176)
4199 - reorganization of lov code
4200 - single portals codebase
4202 - add extents/mballoc support (5025)
4203 - direct I/O reads in the obdfilter (4048)
4204 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
4206 tbd Cluster File Systems, Inc. <info@clusterfs.com>
4209 - send OST transaction number in read/write reply to free req (4966)
4210 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
4211 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
4212 - the watchdog thread now runs as interruptible (5246)
4213 - handle missing objects in filter_preprw_read properly (5265)
4214 - unsafe list practices (rarely) led to infinite eviction loop (4908)
4215 - drop import inflight refcount on signal_completed_replay error (5255)
4216 - unlock page after async write error during send (3677)
4217 - return original error code on reconstructed replies (3761)
4218 - no transno return for symlink open, don't save no-trasno open (3440)
4220 - add pid to ldlm debugging output (4922)
4221 - bump the watchdog timeouts -- we can't handle 30sec yet
4222 - extra debugging for orphan dentry/inode bug (5259)
4224 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
4227 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
4228 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
4229 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
4230 - fix NULL dereference in /proc/sys/portals/routes (4827)
4231 - allow failed mdc_close() operations to be interrupted (4561)
4232 - stop precreate on OST before MDS would time out on it (4778)
4233 - don't send partial-page writes before EOF from client (4410)
4234 - discard client grant for sub-page writes on large-page clients (4520)
4235 - don't free dentries not owned by NFS code, check generation (4806)
4236 - fix lsm leak if mds_create_objects() fails (4801)
4237 - limit debug_daemon file size, always print CERROR messages (4789)
4238 - use transno after validating reply (3892)
4239 - process timed out requests if import state changes (3754)
4240 - update mtime on OST during writes, return in glimpse (4829)
4241 - add mkfsoptions to LDAP (4679)
4242 - use ->max_readahead method instead of zapping global ra (5039)
4243 - don't interrupt __l_wait_event() during strace
4245 - add software watchdogs to catch hung threads quickly (4941)
4246 - make lustrefs init script start after nfs is mounted
4247 - fix CWARN/ERROR duplication (4930)
4248 - return async write errors to application if possible (2248)
4249 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
4250 - print NAL number in %x format (4645)
4251 - update barely-supported suse-2.4.21-171 series (4842)
4252 - support for sles 9 %post scripts
4253 - support for building 2.6 kernel-source packages
4254 - support for sles km_* packages
4256 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
4259 - ignore -ENOENT errors in osc_destroy (3639)
4260 - notify osc create thread that OSC is being cleaned up (4600)
4261 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
4262 - reconstruct ost_handle() like mds_handle() (4657)
4263 - create a new thread to do import eviction to avoid deadlock (3969)
4264 - let lconf resolve symlinked-to devices (4629)
4265 - don't unlink "objects" from directory with default EA (4554)
4266 - hold socknal file ref over connect in case target is down (4394)
4267 - allow more than 32000 subdirectories in a single directory (3244)
4268 - fix blocks count for O_DIRECT writes (3751)
4269 - OST returns ENOSPC from object create when no space left (4539)
4270 - don't send truncate RPC if file size isn't changing (4410)
4271 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
4272 - bind to privileged port in socknal and tcpnal (3689)
4274 - rate limit CERROR/CWARN console message to avoid overload (4519)
4275 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
4276 - basic mmap support (3918)
4277 - kernel patch series update from b1_4 (4711)
4279 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
4282 - avoid crash during MDS cleanup with OST shut down (2775)
4283 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
4284 - don't use bad inodes on the MDS (3744)
4285 - dynamic object preallocation to improve recovery speed (4236)
4286 - don't hold spinlock over lock dumping or change debug flags (4401)
4287 - don't zero obd_dev when it is force cleaned (3651)
4288 - print grants to console if they go negative (4431)
4289 - "lctl deactivate" will stop automatic recovery attempts (3406)
4290 - look for existing locks in ldlm_handle_enqueue() (3764)
4291 - don't resolve lock handle twice in recovery avoiding race (4401)
4292 - revalidate should check working dir is a directory (4134)
4294 - don't always mark "slow" obdfilter messages as errors (4418)
4296 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
4299 - don't close LustreDB during write_conf until it is done (3860)
4300 - fix typo in lconf for_each_profile (3821)
4301 - allow dumping logs from multiple threads at one time (3820)
4302 - don't allow multiple threads in OSC recovery (3812)
4303 - fix debug_size parameters (3864)
4304 - fix mds_postrecov to initialize import for llog ctxt (3121)
4305 - replace config semaphore with spinlock (3306)
4306 - be sure to send a reply for a CANCEL rpc with bad export (3863)
4307 - don't allow enqueue to complete on a destroyed export (3822)
4308 - down write_lock before checking llog header bitmap (3825)
4309 - recover from lock replay timeout (3764)
4310 - up llog sem before sending rpc (3652)
4311 - reduce ns lock hold times when setting kms (3267)
4312 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
4313 - fix NULL deref and obd_dev leak on setup error (3312)
4314 - replace some LBUG about llog ops with error handling (3841)
4315 - don't match INVALID dentries from d_lookup and spin (3784)
4316 - hold dcache_lock while marking dentries INVALID and hashing (4255)
4317 - fix invalid assertion in ptlrpc_set_wait (3880)
4319 - add libwrap support for the TCP acceptor (3996)
4320 - add /proc/sys/portals/routes for non-root route listing (3994)
4321 - allow setting MDS UUID in .xml (2580)
4322 - print the stack of a process that LBUGs (4228)
4324 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
4327 - don't cleanup request in ll_file_open() on failed MDS open (3430)
4328 - make sure to unset replay flag from failed open requests (3440)
4329 - if default stripe count is 0, use OST count for inode size (3636)
4330 - update parent mtime/ctime on client for create/unlink (2611)
4331 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
4332 - free recovery state on server during a forced cleanup (3571)
4333 - unregister_reply for resent reqs (3063)
4334 - loop back devices mounting and status check on 2.6 (3563)
4335 - fix resource-creation race that can provoke i_size == 0 (3513)
4336 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
4337 - more debugging for page-accounting assertion (3746)
4338 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
4339 - avoid deadlock after precreation failure (3758)
4340 - fix race and lock order deadlock in orphan handling (3450, 3750)
4341 - add validity checks when grabbing inodes from l_ast_data (3599)
4343 - add /proc/.../recovery_status to obdfilter (3428)
4344 - lightweight CDEBUG infrastructure, debug daemon (3668)
4345 - change default OSC RPC parameters to be better on small clusters
4346 - turn off OST read cache for files smaller than 32MB
4347 - install man pages and include them in rpms (3100)
4348 - add new init script for (un)mounting lustre filesystems (2593)
4349 - run chkconfig in %post for init scripts (3701)
4350 - drop scimac NAL (unmaintained)
4352 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
4355 - clean kiobufs before and after use (3485)
4356 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
4357 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
4358 - change init script to fail more clearly if not run as root (1528)
4359 - allow clients to reconnect during replay (1742)
4360 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
4361 - don't do DNS lookups on NIDs too small for IP addresses (3442)
4362 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
4363 - fix cond_resched (3554)
4364 - only evict unfinished clients after recovery (3515)
4365 - allow bulk resend, prevent data loss (3570)
4366 - dynamic ptlrpc request buffer allocation (2102)
4367 - don't allow unlinking open directory if it isn't empty (2904)
4368 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
4369 - remove extraneous obd dereference causing LASSERT failure (3334)
4370 - don't use get_cycles() when creating temp. files on the mds (3156)
4371 - hold i_sem when setting i_size in ll_extent_lock() (3564)
4372 - handle EEXIST for set-stripe, set proper directory name (3336)
4374 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
4375 - fix ksocknal_fmb_callback() error messages (2918)
4377 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
4380 - don't copy lvb into (possibly NULL) reply on error (2983)
4381 - don't deref dentry after dput, don't free lvb on error (2922)
4382 - use the kms to determine writeback rpc length (2947)
4383 - increment oti_logcookies when osc is inactive (2948)
4384 - update client's i_blocks count via lvb messages (2543)
4385 - handle intent open/close of special files properly (1557)
4386 - mount MDS with errors=remount-ro, like obdfilter (2009)
4387 - initialize lock handle to avoid ASSERT on error cleanup (3057)
4388 - don't use cancelling-locks' kms values (2947)
4389 - use highest lock extent for kms, not last one (2925)
4390 - don't dereference ERR_PTR() dentry in error handling path (3107)
4391 - fix thread race in portals_debug_dumplog() (3122)
4392 - create lprocfs device entries at setup instead of at attach (1519)
4393 - common AST error handler, don't evict client on completion race (3145)
4394 - zero nameidata in detach_mnt in 2.6 (3118)
4395 - verify d_inode after revalidate_special is valid in 2.6 (3116)
4396 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
4397 - initialize RPC timeout timer earlier for 2.6 (3219)
4398 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
4399 - print nal/nid for unknown nid (3258)
4400 - additional checks for oscc recovery before doing precreate (3284)
4401 - fix ll_extent_lock() error return code for 64-bit systems (3043)
4402 - don't crash in mdc_close for bad permissions on open (3285)
4403 - zero i_rdev for non-device files (3147)
4404 - clear page->private before handing to FS, better assertion (3119)
4405 - tune the read pipeline (3236)
4406 - fix incorrect decref of invalidated dentry (2350)
4407 - provide read-ahead stats and refine rpc in flight stats (3328)
4408 - don't hold journal transaction open across create RPC (3313)
4409 - update atime on MDS at close time (3265)
4410 - close LDAP connection when recovering to avoid server load (3315)
4411 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
4412 - don't leak open file on MDS after open resend (3325)
4413 - serialize filter_precreate and filter_destroy_precreated (3329)
4414 - loop device shouldn't call sync_dev() for nul device (3092)
4415 - clear page cache after eviction (2766)
4416 - resynchronize MDS->OST in background (2824)
4417 - refuse to mount the same filesystem twice on same mountpoint (3394)
4418 - allow llmount to create routes for mounting behind routers (3320)
4419 - push lock cancellation to blocking thread for glimpse ASTs (3409)
4420 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
4421 - fix rare problem with rename on htree directories (3417)
4423 - allow default OST striping configuration per directory (1414)
4424 - fix compilation for qswnal for 2.6 kernels (3125)
4425 - increase maximum number of MDS request buffers for large systems
4426 - change liblustreapi to be useful for external progs like lfsck (3098)
4427 - increase local configuration timeout for slow disks (3353)
4428 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
4430 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
4433 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
4434 - don't overwrite extent policy data in reply if lock was blocked (2901)
4435 - drop filter export grants atomically with removal from device (2663)
4436 - del obd_self_export from work_list in class_disconnect_exports (2908)
4437 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
4438 - swab reply message in mdc_close, other PPC fixes (2464)
4439 - fix destroying of named logs (2325)
4440 - overwrite old logs when running lconf --write_conf (2264)
4441 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
4442 - fix race in target_handle_connect (2898)
4443 - mds_reint_create() should take same inode create lock (2926)
4444 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
4445 - don't close files for self_export to avoid uninitialized obd (2936)
4446 - allow MDS with the same name as client node (2939)
4447 - hold dentry reference for closed log files for unlink (2325)
4448 - reserve space for all logs during transactions (2059)
4449 - don't evict page beyond end of stripe extent (2925)
4450 - don't oops on a deleted current working directory (2399)
4451 - handle hard links to targets without a parent properly (2517)
4452 - don't dereference NULL lock when racing during eviction (2867)
4453 - don't grow lock extents when lots of conflicting locks (2919)
4455 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
4458 - account for cache space usage on clients to avoid data loss (974)
4459 - lfsck support in lustre kernel code (2349)
4460 - reduce journal credits needed for BRW writes (2370)
4461 - orphan handling to avoid losing space on client/server crashes
4462 - ptlrpcd can be blocked, stopping ALL progress (2477)
4463 - use lock value blocks to assist in proper KMS, faster stat (1021)
4464 - takes i_sem instead of DLM locks internally on obdfilter (2720)
4465 - recovery for initial connections (2355)
4466 - fixes for mds_cleanup_orphans (1934)
4467 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
4468 - block all file creations until orphan recovery completes (1901)
4469 - client remove rq_connection from request struct (2423)
4470 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
4471 - recovery timer race (2670)
4472 - mdc_close recovey bug (2532)
4473 - ptlrpc cleanup bug (2710)
4474 - mds timeout on local locks (2588)
4475 - namespace lock held during RPCs (2431)
4476 - handle interrupted sync write properly (2503)
4477 - don't try to handle a message that hasn't been replied to (2699)
4478 - client assert failure during cleanup after abort recovery (2701)
4479 - leak mdc device after failed mount (2712)
4480 - ptlrpc_check_set allows timedout requests to complete (2714)
4481 - wait for inflight reqs when ptlrpcd finishes (2710)
4482 - make sure unregistered services are removed from the srv_list
4483 - reset bulk XID's when resending them (caught by 1138 test)
4484 - unregister_bulk after timeout
4485 - fix lconf error (2694)
4486 - handle write after unfinished setstripe, stripe-only getstripe (2388)
4487 - readahead locks pages, leaves pending causing memory pressure (2673)
4488 - increase OST request buffers to 4096 on large machines (2729)
4489 - fix up permission of existing directories in simple_mkdir (2661)
4490 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
4491 - don't assign transno to errored transactions (2742)
4492 - don't delete objects on OST if given a bogus objid from MDS (2751)
4493 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
4494 - if rq_no_resend, then timeout request after recovery (2432)
4495 - fix MDS llog_logid record size, 64-bit array alignment (2733)
4496 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
4497 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
4498 - MDS recovery shouldn't delete objects that it has given out (2730)
4499 - if enqueue arrives after completion, don't clobber LVB (2819)
4500 - don't unlock pages twice when trigger_group_io returns error (2814)
4501 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
4502 - don't write pages to disk if there was an error (1450)
4503 - don't ping imports that have recovery disabled (2676)
4504 - take buffered bytes into account when balancing socknal conn (2817)
4505 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
4506 - reconnect unlink llog connection after MDS reconnects to OST (2816)
4507 - remove little-endian swabbing of llog records (1987)
4508 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
4509 - retry reposting request buffers if they fail (1191)
4510 - grow extent at grant time to avoid granting a revoked lock (2809)
4511 - lock revoke doesn't evict page if covered by a second lock (2765)
4512 - disable VM readahead to avoid reading outside lock extents (2805)
4514 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
4515 - updated kernel patches for hp-2.4.20 kernel (2681)
4517 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
4520 - fix truncated write corruption (2366)
4521 - fix for failed assertion in iopen_connect_dentry (1792,2517)
4523 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
4524 - ensure len(uuid) < 37 in lmc (1171)
4525 - fix ia64 OOPS in llog_test (2255)
4526 - zero end of page at obdfilter for partial page writes (2648)
4527 - don't leave stale dentries around after renames (bug 2428)
4528 - fix timeouts when evicting a client with a single lock held (2642)
4529 - set deadline for the initial HELLO message to drain (2634)
4530 - print out dotted-quad IP addresses in the socknal (2302)
4532 - additional debugging for MDS client eviction problem (2443)
4533 - fix mkfsoptions support for osts (2603, 2604)
4535 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
4538 - add series for the vanilla 2.6.0 kernel
4539 - add series for the vanilla 2.4.24 kernel
4540 - add series for a cray x86/64 UL kernel drop
4541 - fix xattr patches for the vanilla 2.4.19 series
4543 - generate true UUIDs in lmc (1171)
4544 - have portals stack dumping break in UML (2466)
4545 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
4546 - allocate with _NOFS in ldlm to avoid deadlock (1933)
4547 - wake callback waiting threads on client eviction (2460)
4548 - Add --ptldebug and --subsystem to lmc (1719)
4549 - update assertion to allow safe interrupt allocation
4550 - set rq_no_resend for cancel requests (2432)
4551 - recalculate ptlrpcd timeout after resend (2494)
4552 - call vfs_rmdir when removing pending directories (2368)
4553 - fix renaming a file to itself (2429)
4554 - lmc creates a default one-stripe lov (2454)
4555 - expand procfs space to handle large clusters (2326)
4556 - increase UML stack to avoid overflow
4557 - update lconf's list of debug and subsystem masks
4558 - fix lfs find --obd (2510)
4559 - /proc tunable for disabling filter read caching (2591)
4560 - stop rpm packages from altering slapd.conf (2301)
4561 - disable nagle in the socknal under 0conf (2578)
4562 - choose mds inode size based on stripe count (2572)
4563 - fix kernel-source rpm problems (2516)
4565 - add --disable-doc to avoid pdf generation (2421)
4566 - update documentation, tests, type-os, comments
4567 - avoid format warnings on ia64
4568 - remove the TOE NAL
4569 - tiny code cleanups by removing unused fields
4571 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
4574 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
4575 - remove the most blatant lies from BUILDING file (2371)
4576 - change default debug level to reasonable production setting
4577 - reduce client side cache size to reduce cache flush time
4578 - reduce max RPCs in flight to avoid unnecessary file fragmentation
4579 - make TCP zerocopy and pinger support enabled by default (2476)
4580 - sync writes completed after process exits caused crashes (2319)
4581 - maintain correct mount count on the MDS (2356)
4582 - backout 1557, because 2316 wasn't really fixed
4583 - better file I/O statistics gathering in /proc
4584 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
4585 - another kernel patch to fix zero-copy TCP function export
4586 - don't take duplicate lock when processing re-sent getattr (2420)
4587 - lctl uses obd_self_export instead of creating new conn (2353)
4588 - MDS/OST recovery case which requires object creation asserted (2425)
4589 - move lfs from /usr/sbin to /usr/bin in packages
4590 - fix race between mds_client_add and mds_client_free (2417)
4591 - use kmalloc instead of slabs in portals (2430)
4592 - don't create duplicate records when a failover MDS is present (2442)
4593 - remove unnecessary mount age check (2332)
4594 - don't remove directory inodes from locks prematurely (2451)
4595 - don't break if MDS service name is the same as hostname (2103)
4596 - fix races in client write RPC generation when cache full (2482)
4598 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
4601 - remove now-unused request->rq_obd (278)
4602 - if an allocation fails, print out how much memory we've used (1933)
4603 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
4604 - add the "configurable stack size" patch to most series files (1256)
4605 - ability to write large log records, for 100+ OST configs (2306)
4606 - fix NULL deref when filter_prep fails (2314)
4607 - fix operator precedence error in filter_sync
4608 - dynamic allocation of socknal TX descriptors (2315)
4609 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
4610 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
4611 - ensure that CWARN messages in Portals always get to the syslog
4612 - __init/__exit are not for prototype decls (ldlm_init/exit)
4613 - x86-64 compile warning fixes
4614 - fix gateway LMC keyword conflict (2318)
4615 - fix MDS lock inversions in getattr/reint paths (1844)
4616 - fix a rare lock re-ordering bug, which caused deadlock (2322)
4617 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
4618 - DLM race condition prevented some lock evictions (2328)
4619 - ENOMEM detection and retry on socknal sends (2230)
4620 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
4621 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
4622 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
4623 - better error messages when a client is rejected during recovery (1505)
4624 - avoid cancelling locks which were never granted, after failure (2330)
4625 - fix i_sem/journal inversion in mds_client_add (2333)
4626 - fix truncate/getattr lock cycle deadlock (2334)
4627 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
4628 - fix two rare exit paths which could leak an l_lock() ref (2321)
4629 - fencepost error in MDS/OST orphan recovery (2226)
4630 - make log record alignment 8 bytes (1988)
4631 - lstripe now fails when requested offset > ost_count (2237)
4632 - ensure that all kernel series have a complete list.h (1607)
4633 - fix crashes in special-file operations (2316)
4634 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
4636 - allow configurable automake binary, for testing new versions
4637 - small update to the lfs documentation
4639 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
4641 * fix negative export reference count in fsfilt_sync (2312)
4643 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
4644 * release candidate 0.9.1
4646 - orphans are moved into the PENDING directory for possible recovery
4647 - replayed opens now open by fid for orphan/rename safety (1042)
4648 - last close of an orphan inode generates a transno (683)
4649 - chdir() and mount() now pin the directory entry (1020)
4650 - avoid CERROR in normal ll_setattr_raw() error case (1500)
4651 - discard very old requests without processing them (1502)
4652 - remove some common, well-understood CERRORs (1505)
4653 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
4654 - clear "grant" flags in OST replies until OST grant code lands (1644)
4655 - fix read performance by not clobbering i_blksize on client (1598)
4656 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
4657 - make LRU size a /proc tunable, clears locks when reduced (707)
4658 - fix some lprocfs rot that prevented ptlbd from loading (1732)
4659 - server locks take references on exports now (1558)
4660 - build fixes for 2.4.20-rh trees (1663)
4661 - return an error from lov_create if all OSCs are inactive (1751)
4662 - fix import levels when a reconnect happens without a timeout (1597)
4663 - exit early from mds_open if we get a lookup error (1749)
4664 - partial page read at EOF wouldn't wait for disk before sending (1642)
4665 - avoid NULL deref in obdfilter when reading page past EOF (1592)
4666 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
4667 - fix LBUG in ll_it_open_error with rc = -2 (1861)
4668 - write/truncate lock inversion (1639)
4669 - Don't auto-load obdclass, portals modules during cleanup (1495)
4670 - fix timestamps from jumping to "now" (1763)
4671 - extra journal assertions (1648)
4672 - add an extra multiunlink test (1771)
4673 - fix read_record/write_record API (1776)
4674 - fix leak of offset_extent, possible incorrect i_size later (1772)
4675 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
4676 - Debugging for the kqswnal_get_idle_tx problems (1820)
4677 - Allow recovery to be attempted multiple times (1536)
4678 - Write out MDS last_rcvd file after it is first created (1600)
4679 - Fix tx_descriptor leak in failed transmit situations (1827)
4680 - ext3 journaling fixes for assertion failure after IO error (1871)
4681 - class_export_put() on freed export after completion AST error (1896)
4682 - Fix revalidate looping in VFS (1322)
4683 - Don't access a freed export during MDS_REINT timeout (1521)
4684 - Add open-unlink recovery support on the MDS (1673,1764)
4685 - Return an error if no MDS data was read from last_rcvd (1946)
4686 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
4687 - Don't setup a disk device that doesn't match exported UUID (317)
4688 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
4689 - avoid committing NULL handle in force close
4690 - local.sh is now a one-stripe LOV configuration
4691 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
4692 - fix ext3 htree duplicate directory entry corruption (1516)
4693 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
4694 - update to new LOV EA format (2097)
4695 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
4697 2003-06-15 Phil Schwan <phil@clusterfs.com>
4700 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
4701 - per-import/export recovery handling (958, 931, 959)
4702 - multiple last-rcvd slots, for serving multiple FSes (949)
4703 - connections are again shared between multiple imp/exports (963, 964)
4704 - "umount -f" would hang if any requests needed to be sent (393, 978)
4705 - avoid pinning large req buffer by copying for queued messages (989)
4706 - add "uuid" to "lctl device" command to help upcalls (991)
4707 - "open" RPCs with transnos would confuse recovery counters (1037)
4708 - do proper endian conversion of all wire messages (288, 340, 891)
4709 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
4710 - call waiting locks callback from LDLM recovery thread (1127, 1151)
4711 - fix ptlrpc_connection leak in target_handle_connect (1174)
4712 - fix import refcounting bug in OST and MDS cleanup (1134)
4713 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
4714 - fix very unlikely obd_types race condition (501)
4715 - remove osc_open hack for echo_client (1187)
4716 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
4717 - a failure in read_inode2 leads to deadlock (1139)
4718 - cancel ack-locks as soon as transaction is committed (1072)
4719 - fix major leaks and crashes in the bulk I/O path (937, 1057)
4720 - make sure to commitrw after any preprw to avoid deadlock (1162)
4721 - failing to execute a file in a lustre FS would lock inode (1203)
4722 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
4723 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
4724 - obd_uuid2tgt would walk off the end of the list (1255)
4725 - on IA64 the osc would give portals incorrect bulk size (1258)
4726 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
4727 - fix lock inversion caused by new llite matching code (1282)
4728 - limit the number of dirty pages on a client to 10MB (1286)
4729 - timed out locks were not being corrected cancelled (1289)
4730 - fix O_DIRECT above 4GB on IA-32 (1292)
4731 * major user-visible changes
4732 - fail out/fail over policy now controlled by the upcall (993)
4734 - add OBD_PING to check server availability and failure (954)
4735 - lustre messages are now sent in sending host order (288, 340, 891)
4736 - add eadatalen to MDS getattr reply (340)
4737 - OST read replies may contain second buffer, with per-page status (593)
4739 2003-03-11 Phil Schwan <phil@clusterfs.com>
4742 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
4743 - failed open()s could cause deadlock; fixed (867, 869)
4744 - stop cancelling OST locks when files are closed (481)
4745 - overlapping XID spaces caused network corruption (851, 853)
4746 - fix unsafe fsfilt counter arithmetic; change to atomic_t
4747 - setattr_raw added, to do single-RPC, server-side setattrs
4748 - lmc/lconf syntax change for OST UUIDs
4749 - fix crashy race condition between ptlrpc_free_req and osc_close
4750 - don't use request in mdc_enqueue if we hit a timeout (889)
4751 - don't set the inode i_size for regular files from the MDS (896)
4752 - handle out of order completion AST (842)
4753 - don't LBUG if a lock request times out after receiving AST (913)
4754 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
4755 - if a bad lock AST arrives, send an error instead of dropping entirely
4756 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
4757 - fix leak in bulk IO when only partially completed (899, 900, 926)
4758 - fix O_DIRECT for ia64 (55)
4759 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
4760 - C-z after timeout could hang a process forever; fixed (977)
4762 - client-side I/O cache (678, 924, 929, 941, 970)
4764 - READPAGE and SETATTRs which don't take server-side locks get
4767 2003-02-11 Phil Schwan <phil@clusterfs.com>
4770 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
4771 - Fix fsfilt_extN_readpage() to read a full page of directory
4772 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
4773 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
4774 - Fix imbalanced LOV object allocation and out-of-bound access (469)
4775 - Most intent operations were removed, in favour of a new RPC mode
4776 that does a single RPC to the server and bypasses most of the VFS
4777 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
4778 - Aggressively cancel local locks on DLM servers
4779 - mds_reint_unlink sends EA to the client if it's the last nlink.
4780 client uses that EA to unlink OST objects.
4781 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
4782 - recursive symlinks were fixed (439)
4783 - fixed NULL deref in DEBUG_REQ
4784 - filter_update_lastobjid no longer calls sync, which annoyed extN
4785 - fixed multi-client small-writes to a single file problem (445)
4786 - fixed mtime updates during file writes (607)
4787 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
4788 - fixed bug in obd_brw_read/write() (under guise of testing 367)
4789 - fixed Linux OST size reporting problem (444, 656)
4790 - OST now updates object mtime with writes or setattr (607, 619)
4791 - client verifies file size before zeroing page past EOF (445)
4792 - OST now writes last allocated objid to disk with allocation (108)
4793 - LOV on echo now works (409)
4795 - mds_reint_unlink sends a new buffer, with the EA included. this
4796 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
4797 set if a regular file was being unlinked, and it was the last link
4798 - use PtlGet from the target for bulk writes (315)
4799 - OST now updates object mtime with writes or setattr (607, 619)
4800 - LDLM now has a grant-time callback to revalidate locked items, if
4802 - Many MDS operations were reorganized to combat race conditions
4804 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
4805 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
4807 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
4810 - Fully reactivate OST imports after reconnection (512, others)
4811 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
4812 - More graceful error handling for truncating on dead OST (515)
4813 - Don't error out unless we're actually accessing dead stripes (474)
4814 - Fix garbage sizes when stripes are missing (410)
4815 - LRU counters were broken, causing constant lock purge (433, 432)
4816 - garbage on read from stripes with failed OSTs (441)
4817 - mark OSCs as active before reconnecting during recovery (438)
4818 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
4819 - lfind did not preserve OST order in output (443)
4820 - symlinks cause hung clients, incorrect data (439)
4821 - stop dereferencing request after dropping refcount (457)
4822 - don't LASSERT(spin_is_locked) on non-SMP (455)
4823 - fixes for many rename() bugs
4824 - fstat didn't correctly synchronize attributes (399)
4825 - server must handle lock cancellation during blocking AST prep (487)
4826 - bulk descriptors were free()d too soon (511)
4827 - fix paths in lconf, which would load incorrect modules (451, 507)
4828 - fix confusing lconf 'host not found' error message (386)
4829 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
4830 - fix race condition in mdc_blocking_ast() for inode access (526)
4831 - fix lov_unpackmd() unpacking wrong number of stripes (537)
4832 - fix lov_set_osc_active() marking wrong OSC inactive (440)
4833 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
4834 - fix multiple writes of stripe MD to MDS (358, maybe 519)
4835 - fix lstripe in several ways (kernel side) (527)
4836 - fix request leak in ldlm_cli_enqueue (262)
4837 - incorrect OSC was marked inactive after OST failure
4838 - call mds_fs_cleanup before unmounting filesystem (524)
4839 - fix races between taking ns_lock and ldlm_lock_change_resource
4840 - fix races updating LOV export open file list
4841 - fix lov_enqueue error path, avoid decref-ing bad lock handle
4842 - fix recovery NULL deref in ldlm_cli_cancel_unused
4843 - fix some DLM races by using new hash table for lock handles (419)
4844 - permit the client to specify desired inodes, at replay
4845 - duplicate requests when we queue them for replay reintegration
4846 - fix last_rcvd offset calculation
4847 - sync after each recovered transaction, so we always make progress
4848 - never, not always, ERESTART requests without transnos
4849 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
4851 - skip replay if the MDS says that the client is already connected
4852 - don't check for a recovery-enabled export to match lctl's UUID
4853 - don't INC_USE_COUNT for phantom exports
4854 - don't crash when cleaning up phantom exports (567)
4855 - don't double-finish or set replay data for errored mdc_open requests
4856 - abort requests when they time out, so we don't get old replies
4857 - send/receive replies for AST messages again
4858 - if the client says that it doesn't have the lock, cancel it on the
4860 - if we timeout during I/O, don't try to cancel an in-use lock; instead
4861 mark it as destroyed, it will all work out when decref is called
4862 - fix module use counts (22, 581)
4864 - ASTs now expect a reply (server cancels lock on error reply)
4866 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
4869 - fix many simultaneous client startup (392)
4870 - fix dentry->d_it clobbering
4871 - credentials weren't being shipped for readdir/getattr operations
4872 - remove invalid assertions triggered during some concurrent MD
4874 - proper Lustre versions added (336, 389)
4875 - fix memory leak for create error case (398)
4876 - fix LOV locking bug that would get cli/srv out of sync
4877 - fix echo client over LOV (409)
4878 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
4879 - fix double-O_EXCL intent crash (424)
4880 - avoid sending multiple lock CANCELs (352)
4882 - MDS can do multi-client recovery (modulo bugs in new code)
4884 - many updates, edits, cleanups
4886 2002-11-18 Phil Schwan <phil@clusterfs.com>
4889 - fix null d_it dereference (346)
4890 - fix full OST/dbench hang (333)
4891 - fix permission problem with file removal (286)
4892 - fix removal of OSCs from LOV when they fail
4893 - fix NULL deref during bulk timeout (214)
4894 - fix problems related to multiple filesystems on one MDS (241)
4895 - fixed serious subtle metadata locking bugs
4896 - free locks on clients when inodes are removed due to memory
4898 - fix inode pointer in lock data (285)
4899 - partial support for multiple MDS on a single host (241)
4900 - data locks weren't cancelled at clear_inode time (290, 311)
4901 - intent locks could lead to unbounded lock growth (205)
4902 - added a maximum lock count, an LRU list, and a flusher
4903 - fix multiple rename (365)
4904 - properly abstracted the echo client
4905 - OSC locked 1 byte too many; fixed
4906 - rewrote brw callback code:
4907 - fixed recovery bugs related to LOVs (306)
4908 - fixed too-many-pages-in-one-write crash (191)
4909 - fixed (again) crash in sync_io_timeout (214)
4910 - probably fixed callback-related race (385)
4912 - Add capability to MDS protocol
4913 - LDLM cancellations and callbacks on different portals
4915 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
4918 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
4919 - defer open object destruction to close time (601981, 138)
4920 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
4921 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
4922 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
4923 - don't call obd_setattr in ll_file_release for destroyed objects
4924 * protocol change to lustre_msg: move |version| and add |flags|
4925 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
4926 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
4927 * added replay of create, unlink, link and rename operations during
4928 MDS failover; recovery should be much more robust now
4929 * remove failed OSCs from LOVs (only lov_create uses this so far)
4930 * the lustre-HOWTO was brought (more) up to date (582544)
4932 2002-10-23 Phil Schwan <phil@clusterfs.com>
4935 - in-use dentries weren't being reused properly (617851)
4936 - prevent multiple LDLM setup (599178)
4937 - fix LOV size calculations for truncate (617853)
4938 - fix client handling of MDS intent errors (POSIX)
4939 - fix permission bug in lovstripe.c test (624321)
4940 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
4941 - truncate past end of file could corrupt data
4942 - proper cleanup after timeouts, crashes, etc (592524, 550815)
4943 - a race in recovery could return ETIMEDOUT to apps (623947)
4944 - building outside the source directory was fixed
4945 * the lustre-HOWTO was brought (more) up to date (582544)
4946 * major progress was made on recovery functionality
4948 2002-10-10 Phil Schwan <phil@clusterfs.com>
4951 - recovery deadlock fix
4952 - rm -rf causes LBUG fix (617817)
4953 - file open by multiple tasks fix (618962)
4954 - directory permissions bugs (602707 and 620007)
4955 - journal_stop fixed with locking (611313)
4956 - O_APPEND failures resolved (618273, perhaps 614459)
4957 - lconf PATH fix (619770)
4958 - IA64 build fix (621450)
4959 - RPC buffer sizes scale with amount of memory
4961 2002-10-01 Phil Schwan <phil@clusterfs.com>
4964 - locks would be cancelled without throwing away data pages,
4965 resulting in inconsistent data (605627)
4966 - inode attributes were not always being refreshed (605627, 612449)
4967 - lconf now continues to cleanup after lctl reports an error
4968 - MDS now enforces user permissions (602707)
4969 - lprocfs cleanup fixed, but not yet enabled (614157)
4970 - fixed infinite server hang, should a client not respond to an AST
4971 - avoid going into recovery if user calls readlink() with a buffer
4972 that's too small (613941)
4973 - AST RPCs no longer require replies (614867) -- this may be changed
4974 - don't crash server if client sends an IOV that's too big (611336)
4975 - fixed lock conversion deadlock (611892)
4976 - fixed the following of symlinks (614622)
4977 * recovery: the server can remove locks from a client that dies, other
4978 clients can make progress
4979 * more extN patch fixes
4980 * compile-time configurable ptlrpc buffer allocations
4982 - collaborative read cache document
4983 - Lustre Lite Performance CDR document-in-progress
4985 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4988 - fix typo in patch-2.4.18
4990 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4993 - clear ptlrpc request each time in handle_incoming_request()
4994 - unlink of files now destroys the object on the OST
4996 2002-09-19 Peter Braam <braam@clusterfs.com>
4998 * add hard link support
4999 * change obdfile creation method
5000 * kernel patch changed
5002 2002-09-19 Peter Braam <braam@clusterfs.com>
5005 - stack overflow bug in extN fixed
5007 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
5009 * documentation updates
5010 - add man pages for config tools
5011 - update tests/README to describe testing with new config tools
5012 - finish metadata API descriptions
5013 * bug fixes and cleanups
5014 - statfs workaround for 16TB limit
5015 - LOV stripe allocation improved, can stripe on subset of OSTs
5016 - LOV file size/IO offset was wrong for files > 4GB in size
5017 - object EA data was being dropped, caused files to be unreadable
5018 - memory overflow with non-LOV OST caused memory corruption
5019 - fixed regression tests to work with new config tools, obdfilter
5020 - fixed bug when directory size became larger than 1 block
5021 - fixed bug (for single client case) when PWD was deleted
5022 - invalidate local directory pages when doing intent-based ops
5023 - avoid LDLM oops when lock callback contained bad data
5025 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
5027 * documentation updates
5028 * bug fixes and cleanups
5029 - configuration tools
5032 - 64-bit compile warnings
5033 - 64-bit internal statfs data
5035 * test_brw on persistent OST devices
5037 * lprocfs (disabled)
5039 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
5041 * documentation updates
5042 * bug fixes and cleanups
5043 * configuration tools
5045 2002-08-30 Peter J. Braam <braam@clusterfs.com>
5048 * many small fixes to 0_5_4
5049 * io/network handling
5050 * thinkos in MDS operations
5052 2002-08-24 Peter J. Braam <braam@clusterfs.com>
5055 * crucial basic fixes to 0.5.3
5056 * IOR, Iozone work over Elan
5059 2002-08-07 Phil Schwan <phil@clusterfs.com>
5060 * version 0_5_3, our first alpha
5061 * we use the new Portals iovs
5062 * documentation updates
5063 * bug fixes and cleanups
5064 * small changes in the DLM wire protocol
5066 2002-07-25 Peter J. Braam <braam@clusterfs.com>
5067 * version 0_5_1 with some initial stability,
5068 * locking on MD and file I/O.
5069 * documentation updates
5070 * several bug fixes since 0.5.0
5071 * small changes in wire protocol
5073 2002-07-18 Phil Schwan <phil@clusterfs.com>
5075 * delivered as Lustre Light Alpha
5076 * fixed a crash after handling invalid MDS requests
5077 * fixed directory pages for architectures with non-4k pages sizes
5079 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
5080 * release version v0_4_4
5081 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
5083 * Fixes a number of interruption problems with OST operations.
5084 * Update documentation for portals header changes
5085 * Move all wire protocol structs/defines to lustre_idl.h
5086 * Fixes symlink length bug.
5087 * Add tcpdump to repository.
5089 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
5090 * release version v0_4_3
5091 * Fixes statfs for inodes on extN.
5092 * Fixes bug in runtests which would delete /etc/hosts.
5093 * Use 64-bit object IDs wherever possible (not into VFS though)
5094 Remove ost_get_info, which is unused by lustre, and out of date.
5096 2002-07-03 Peter Braam <braam@clusterfs.com>
5097 * release version v0_4_2 Fixes a lookup error (type not passed)
5098 * move forward to head of Portals
5099 * move forward to latest Lustre kernel
5101 2002-06-25 Peter Braam <braam@clusterfs.com>
5102 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob