1 tbd Sun Microsystems, Inc.
4 2.6.16.54-0.2.5 (SLES 10),
5 2.6.18-53.1.19.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: 1.40.7-sun3
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 RHEL5 kernel-2.6.18-53.1.19.el5.
21 Description: enable MGS and MDT services start separately
22 Details : add a 'nomgs' option in mount.lustre to enable start a MDT with
23 a co-located MGS without starting the MGS, which is a complement
24 to 'nosvc' mount option.
27 Frequency : always with o2ib 1.3 and sles10
29 Description: fix build with SLES10 and o2ib v3.
30 Details : sles10 uses diffrent name for Module.symver file but configure
31 assume this file has same name on RHEL/SLES/vanila kernels.
35 Frequency : after recovery
36 Description: precreate to many object's after del orphan.
37 Details : del orphan st in oscc last_id == next_id and this triger growing
38 count of precreated objects. Set flag LOW to skip increase count
39 of precreated objects.
43 Frequency : rare, on clear nid stats
44 Description: ASSERTION(client_stat->nid_exp_ref_count == 0)
45 Details : when clean nid stats sometimes try destroy live entry,
46 and this produce panic in free.
50 Description: Stack overflow during MDS log replay
51 ease stack pressure by using a thread dealing llog_process.
55 Description: wait until IO finished before start new when do lock cancel.
56 Details : VM protocol want old IO finished before start new, in this case
57 need wait until PG_writeback is cleared until check dirty flag and
58 call writepages in lock cancel callback.
60 Severity : enhancement
62 Description: using special macro for print time and cleanup in includes.
66 Description: mds_mfd_close() ASSERTION(rc == 0)
67 Details : In mds_mfd_close(), we need protect inode's writecount change
68 within its orphan write semaphore to prevent possible races.
72 Description: Obsolete CURRENT_SECONDS and use cfs_time_current_sec() instead.
77 Description: don't hit live lock with umount ost.
78 Details : shrink_dcache_parent can be in long loop with destroy dentries,
79 use shrink_dcache_sb instead.
83 Description: don't panic with use echo client
84 Details : echo client pass NULL as client nid pointer and this produce null
89 Description: fix build on ppc32
90 Details : compile code with -m64 flag produce wrong object file for ppc32.
94 Description: add message levels for liblustreapi
98 Description: fix for occasional failure case of -ENOSPC in recovery-small tests
99 Details : Move the 'good_osts' check before the 'total_bavail' check. This
100 will result in an -EAGAIN and in the exit call path we call
101 alloc_rr() which will with increasing aggressiveness attempt to
102 aquire precreated objects on the minimum number of required OSCs.
106 Description: Use old size assignment to avoid deadlock
107 Details : This reverts the changes in bugs 2369 and bug 14138 that introduced
108 the scheduling while holding a spinlock. We do not need locking
109 for size in ll_update_inode() because size is only updated from
110 the MDS for directories or files without objects, so there is no
111 other place to do the update, and concurrent access to such inodes
112 are protected by the inode lock.
116 Description: resolve "_IOWR redefined" build error on SLES10
120 Description: dump the memory debugging after all modules are unloaded to
121 suppress false negative in conf_sanity test 39
123 Severity : enhancement
125 Description: build kernel-ib packages for OFED 1.3 in our release cycle
130 Description: fix SLES kernel versioning
131 Details : the kernel version for our SLES 10 kernel did not include a "-"
132 before the "smp" at the end. while this was not a problem in
133 general, it did mean that software trying to use the kernel
134 version to try to detect a vendor specific kernel would fail.
135 this was most evident by the OFED build scripts.
139 Description: Don't update lov_desc members until making sure they are valid
140 Details : When updating lov_desc members via proc fs, need fix their
141 validities before doing the real update.
145 Description: don't put request into delay list while invalidate in flight.
146 Details : ptlrpc_delay_request sometimes put in delay list while invalidate
147 import in flight. this produce timeout for invalidate and sometimes
148 can cause stale data.
152 Frequency : on ppc only
153 Description: not convert ost objects for directory because it's not exist.
154 Details : ll_dir_getstripe assume dirrectory has ost objects but this wrong.
158 Description: Add FMODE_EXEC file flag for SLES10 SP1 kernel.
160 Severity : enhancement
162 Description: Update to support 2.6.22.14 vanilla kernel.
166 Frequency : rare, on recovery
167 Description: read procfs can produce deadlock in some situation
168 Details : Holding lprocfs lock which send rpc can produce block for destroy
169 obd objects and this also block reconnect with -EALREADY. This isn't
170 fix all lprocfs bugs - but make it rare.
172 Severity : enhancement
174 Description: Update kernel to RHEL5 2.6.18-53.1.14.el5.
177 Frequency : frequent on X2 node
179 Description: mdc_set_open_replay_data LBUG
180 Details : Set replay data for requests that are eligible for replay.
184 Description: lustre_mgs: operation 101 on unconnected MGS
185 Details : When MGC is disconnected from MGS long enough, MGS will evict the
186 MGC, and late on MGC cannot successfully connect to MGS and a lot
187 of the error messages complaining that MGS is not connected.
191 Frequency : on network error
192 Description: panic with double free request if network error
193 Details : mdc_finish_enqueue is finish request if any network error ocuring,
194 but it's true only for synchronus enqueue, for async enqueue
195 (via ptlrpcd) this incorrect and ptlrpcd want finish request
198 Severity : enhancement
200 Description: client-side metadata stat-ahead during readdir(directory readahead)
201 Details : perform client-side metadata stat-ahead when the client detects
202 readdir and sequential stat of dir entries therein
205 Frequency : on start mds
207 Description: Implement get_info(last_id) in obdfilter.
210 Frequency : occasional
212 Description: Correctly check stale fid, not start epoch if ost not support SOM
213 Details : open with flag O_CREATE need set old fid in op_fid3 because op_fid2
214 overwrited with new generated fid, but mds can anwer with one of these
215 two fids and both is not stale. setattr incorectly start epoch and
216 assume will be called done_writeting, but without SOM done_writing
220 Frequency : rare, depends on device drivers and load
222 Description: MDS or OSS nodes crash due to stack overflow
223 Details : Code changes in 1.8.0 increased the stack usage of some functions.
224 In some cases, in conjunction with device drivers that use a lot
225 of stack the MDS (or possibly OSS) service threads could overflow
226 the stack. One change which was identified to consume additional
227 stack has been reworked to avoid the extra stack usage.
230 Frequency : occasional
232 Description: Do not fail import if osc_interpret_create gets -EAGAIN
233 Details : If osc_interpret_create got -EAGAIN it immediately exits and
234 wakeup oscc_waitq. After wakeup oscc_wait_for_objects call
235 oscc_has_objects and see OSC has no objests and call
236 oscc_internal_create to resend create request.
238 Severity : enhancement
240 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.5.
242 Severity : enhancement
244 Description: Update to RHEL5 latest kernel-2.6.18-53.1.13.el5.
247 Frequency : very rare
249 Description: Fix replay if there is an un-replied request and open
250 Details : In some cases, older replay request will revert the
251 mcd->mcd_last_xid on MDS which is used to record the client's
254 Severity : enhancement
256 Description: Update to RHEL5 latest kernel-2.6.18-53.1.6.el5.
258 Severity : enhancement
260 Description: Add rhel5 support to HEAD.
262 Serverity : enhancement
264 Description: Update RHEL4 kernel to 2.6.9-67.0.4.
269 Description: Don't allow skipping OSTs if index has been specified.
270 Details : Don't allow skipping OSTs if index has been specified, make locking
271 in internal create lots better.
275 Description: LBUG in ptlrpc_check_set() bad phase ebc0de00
276 Details : access to bitfield in structure is always rounded to long
277 and this produce problem with not atomic change any bit.
281 Description: Lustre make rpms failed.
282 Details : Remove ldiskfs spec file to avoids rpmbuild be confused when
283 builds Lustre rpms from tarball.
286 Frequency : rare on shutdown ost
288 Description: If llog cancel was not send before clean_exports phase, this can
289 produce deadlock in llog code.
290 Details : If llog thread has last reference to obd and call class_import_put
291 this produce deadlock because llog_cleanup_commit_master wait when
292 last llog_commit_thread exited, but this never success because was
293 called from llog_commit_thread.
297 Description: allow userland application know is lost one of stripes.
298 Details : fill lvb_blocks with error code on ost and return it to
299 application if error flag found.
303 Description: NULL lov_tgts causing MDS oops
304 Details : more safe checks for NULL lov_tgts for avoid oops.
306 Severity : enhancement
308 Description: Update to RHEL4 latest kernel-2.6.9-67.0.1.EL.
312 Descriptoin: make lov_create() will not stuck in obd_statfs_rqset()
313 Details : If an OST is down the MDS will hang indefinitely in
314 obd_statfs_rqset() waiting for the statfs data. While for
315 MDS QOS usage of statfs, it should not stuck in waiting.
317 Severity : enhancement
319 Description: remote_acl support
320 Details : Support ACL-based permission check for remote user.
321 Support setfacl/getfacl for remote user with the utils
322 "lfs {l,r}{s,g}etfacl" which follow the same parameter format as
323 the system "{s,g}etfacl" utils.
325 Severity : enhancement
327 Description: Update to RHEL4 U6 kernel-2.6.9-67.EL.
329 Severity : enhancement
331 Description: Update to RHEL5 latest kernel-2.6.18-53.1.4.el5.
335 Description: make mgs_setparam() handle fsname containing dash
336 Details : fsname containing a dash does not work with lctl conf_param
338 Severity : enhancement
340 Description: Update to SLES10 SP1 latest kernel-2.6.16.54-0.2.3.
342 Severity : enhancement
344 Description: Update to RHEL5 Update-1 kernel 2.6.18-53.el5.
348 Frequency : rare, at shutdown
349 Description: access already free / zero obd_namespace.
350 Details : if client_disconnect_export was called without force flag set,
351 and exist connect request in flight, this can produce access to
352 NULL pointer (or already free pointer) when connect_interpret
353 store ocd flags in obd_namespace.
357 Frequency : only at startup
358 Description: not alloc memory with spinlock held.
359 Details : allocation memory with GFP_KERNEL can produce sleep deadlock,
360 if any spinlock held.
362 Severity : enhancement
364 Description: make lustre randomly fail allocating memory
365 Details : Make lustre randomly failed allocating memory for testing purpose.
367 Severity : enhancement
369 Description: lost problems with lov objid file
370 Details : Fixes some scability and access to not inited memory problems
371 in work with lov objdid file.
376 Description: lfs find does not continue on file error
377 Details : Continue other files processing when a file/dir is absent.
381 Description: Inconsistent usage of lustre_pack_reply()
382 Details : Standardize the usage of lustre_pack_reply() such that it
383 always generate a CERROR on failure.
386 Frequency : occasional
388 Description: MDS hang or stay in waiting lock
389 Details : If client receive lock with CBPENDING flag ldlm need send lock
390 cancel as separate rpc, to avoid situation when cancel request
391 can't processed due all i/o threads stay in wait lock.
395 Description: Update to RHEL5 kernel 2.6.18-8.1.15.el5.
399 Description: Update to SLES10 SP1 kernel 2.6.16.53-0.16
403 Description: Update to SLES9 kernel-2.6.5-7.287.3.
407 Description: Update to RHEL4 latest kernel.
409 Severity : enhancement
411 Description: Build SLES10 patchless client fails
412 Details : The configure was broken by run ./configure with
413 --with-linux-obj=.... argument for patchless client. When the
414 configure use --with-linux-obj, the LINUXINCLUDE= -Iinclude
415 can't search header adequately. Use absolute path such as
416 -I($LINUX)/include instead.
420 Description: interrupt oig_wait produce painc on resend.
421 Details : brw_redo_request can be used for resend requests from ptlrpcd and
422 private set, and this produce situation when rq_ptlrpcd_data not
423 copyed to new allocated request and triggered LBUG on assert
424 req->rq_ptlrpcd_data != NULL. But this member used only for wakeup
425 ptlrpcd set if request is changed and can be safety changed to use
430 Description: LASSERT_{REQ,REP}SWAB macros are buggy
431 Details : If SWAB_PARANOIA is disabled, the LASSERT_REQSWAB and
432 LASSERT_REPSWAB macros become no-ops, which is incorrect. Drop
433 these macros and replace them with their difinitions instead.
437 Description: Update kernel patches for SLES10 2.6.16.53-0.8.
438 Details : Update which_patch & target file for SLES10 latest kernel.
441 Description: Remove client patches from SLES 10 kernel.
442 Details : This causes SLES 10 clients to behave as patchless clients
443 even on a Lustre-patched (server) kernel.
445 Severity : enhancement
447 Description: self-adjustable client's lru lists
448 Details : use adaptive algorithm for managing client cached locks lru
449 lists according to current server load, other client's work
450 pattern, memory activities, etc. Both, server and client
451 side namespaces provide number of proc tunables for controlling
454 Severity : enhancement
456 Description: light-weight GSS support
457 Details : Support krb5n and krb5a mode, which keep Kerberos 5 authentication
458 and reduce performance overhead.
460 Severity : enhancement
462 Description: Linux keyring support
463 Details : Support using service of Linux keyring for Lustre GSS internal
464 context refresh/cache mechanism.
468 Description: Fix errors in lfs documentation
469 Details : Fixes man pages
473 Description: don't use GFP_* in generic Lustre code.
474 Details : Use cfs_alloc_* functions and CFS_* flags for code portability.
478 Description: obdclass is limited by single OBD_ALLOC(idarray)
479 Details : replace OBD_ALLOC/OBD_FREE with OBD_VMALLOC/OBD_VFREE
483 Description: warnings with build patchless client with vanila 2.6.19 and up
484 Details : change old ctl_table style and replace ctl_table/ctl_table_header
485 with cfs_sysctl_table_t/cfs_sysctl_table_header_t
489 Frequency : Only for SLES
490 Description: sanity_quota fail test_1
491 Details : There are multiple occurences of $TSTUSR in SLES's /etc/group
492 file, which makes TSTID[2] inunique.
496 Frequency : Only for SLES9
497 Description: Kernel patches for SLES9 2.6.5-7.286 kernel
498 Details : Update target/ChangeLog/which_patch .
502 Frequency : Only for test_10 in sanity-quota.sh
503 Description: a bug in quota test code
504 Details : checking a test flag in a wrong place
508 Frequency : Only for test_13 in sanity-quota.sh
509 Description: a bug in quota test script
510 Details : shouldn't check overfull allocated quota
514 Description: jbd statistics
515 Details : Port older jbd statistics patch for sles10
517 Severity : enhancement
519 Description: Add printing inode info into message about error in writepage.
524 Description: reply_lock_interpret crash due to race with it and lock cancel.
525 Details : Do not replay locks that are being cancelled. Do not reference
526 locks by their address during replay, just by their handle.
530 Frequency : When flocks are used.
531 Description: assertion failure in ldlm_cli_enquque_fini for non NULL lock.
532 Details : Flock locks might destroy just granted lock if it could be merged
533 with another existing flock, this is done in completion handler,
534 so teach ldlm_cli_enquque_fini that this is a valid case for
540 Description: Oops in read and write path when failing to allocate lock.
541 Details : Check if lock allocation failed and return error back.
545 Description: lstripe command fails for valid OST index
546 Details : The stripe offset is compared to lov->desc.ld_tgt_count
547 instead of lov->desc.ld_active_tgt_count.
551 Description: sanity.sh failed test 103
552 Details : RHEL mis-interpret setfacl "-X" param, so we won't test setfacl
557 Description: df doesn't work properly if diskfs blocksize != 4K
558 Details : Choose biggest blocksize of OST's as the LOV's blocksize.
562 Description: lfs find on -1 stripe looping in lsm_lmm_verify_common()
563 Details : Avoid lov_verify_lmm_common() on directory with -1 stripe count.
567 Description: obd_health_check_timeout too short
568 Details : set obd_health_check_timeout as 1.5x of obd_timeout
572 Description: llapi_file_create() does not allow some changes
573 Details : add llapi_file_open() that allows specifying the mode and
574 open flags, and also returns an open file handle.
578 Description: merge and cleanup kernel patches.
579 Details : Remove mnt_lustre_list in vfs_intent-2.6-rhel4.patch.
583 Description: Add journal checksum support.(Kernel part)
584 Details : The journal checksum feature adds two new flags i.e
585 JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT and
586 JBD2_FEATURE_COMPAT_CHECKSUM. JBD2_FEATURE_CHECKSUM flag
587 indicates that the commit block contains the checksum for
588 the blocks described by the descriptor blocks. Now commit
589 record can be sent to disk without waiting for descriptor
590 blocks to be written to disk. This behavior is controlled
591 using JBD2_FEATURE_ASYNC_COMMIT flag.
595 Description: OSS needs mutliple precreate threads
596 Details : Add ability to start more than one create thread per OSS.
600 Description: Sanity.sh test_65k failed: setstripe should have succeeded
601 Details : execute lfs setstripe on client
605 Description: mds_obd_create error creating tmp object
606 Details : When the user sets quota on root, llog will be affected and can't
607 create files and write files.
610 Frequency : Always on ia64 patchless client, and possibly others.
612 Description: Add EXPORT_SYMBOL check for node_to_cpumask symbol.
613 Details : This allows the patchless client to be loaded on architectures
618 Description: RedHat Update kernel for RHEL5
619 Details : Add the kernel config file for RHEL5.
623 Description: RedHat Update kernel for RHEL5
624 Details : Modify the kernel config file more closer RHEL5.
628 Description: Build failure against Centos5 (RHEL5)
629 Details : Define PAGE_SIZE when it isn't present.
633 Description: test_7 on sanity-quota.sh can't be used on separate machines
634 Details : add facet to handle it
638 Description: "ll_intent_file_open()) lock enqueue: err: -13" with nfs
639 Details : with NFS, the anon dentry's parent was set to itself in
640 d_alloc_anon(), so in MDS, we use rec->ur_fid1 to find the
641 corresponding dentry other than use rec->ur_name.
643 Severity : enhancement
645 Description: lfs setstripe enhancement
646 Details : Make lfs setstripe understand 'k', 'm' and 'g' for stripe size.
650 Description: enable data checksumming by default
651 Details : enable checksum by default, allow --disable-checksum
652 configure option and "-o nochecksum" mount option. Checksums
653 can also be disabled at runtime via $LPROC/osc/*/checksum_pages.
657 Description: lustre support for RHEL5
658 Details : Add support for RHEL5.
662 Description: Client eviction due to failover config
663 Details : after a connection loss, the lustre client should attempt to
664 reconnect to the last active server first before trying the
665 other potential connections.
669 Description: when mds and osts use different quota unit(32bit and 64bit),
670 quota will be released repeatly.
671 Details : void sending multiple quota reqs to mds, which will keep the
672 status between the reqs.
676 Description: osts not allocated evenly to files
677 Details : change the condition to increase offset_idx
680 Frequency : Always for filesystems larger than 2TB on 32-bit systems.
682 Description: Data corruption for OSTs that are formatted larger than 2TB
684 Details : When generating the bio request for lustre file writes the
685 sector number would overflow a temporary variable before being
686 used for the IO. The data reads correctly from Lustre (which
687 will overflow in a similar manner) but other file data or
688 filesystem metadata may be corrupted in some cases.
692 Description: Tune the kernel for good SCSI performance.
693 Details : Set the value of /sys/block/{dev}/queue/max_sectors_kb
694 to the value of /sys/block/{dev}/queue/max_hw_sectors_kb
699 Description: rewrite ext2-derived code in obdclass/uuid.c
700 Details : rewrite inherited code (uuid parsing code from ext2 utils)
701 from scratch preserving functionality.
705 Description: "lfs find -obd UUID" prints directories
706 Details : "lfs find -obd UUID" will return all directory names instead
707 of just file names. It is incorrect because the directories
708 do not reside on the OSTs.
712 Description: use i_size_read and i_size_write in 2.6 port
713 Details : replace inode->i_size access with i_size_read/write()
716 Frequency : when removing large files
718 Description: scheduling issue during removal of large Lustre files
719 Details : Don't take the BKL in fsfilt_ext3_setattr() for 2.6 kernels.
720 It causes scheduling issues when removing large files (17TB in the
724 Frequency : only with liblustre clients on XT3
726 Description: evictions taking too long
727 Details : allow llrd to evict clients directly on OSTs
730 Frequency : only on ppc
732 Description: /proc/fs/lustre/devices broken on ppc
733 Details : The patch as applied to 1.6.2 doesn't look correct for all arches.
734 We should make sure the type of 'index' is loff_t and then cast
735 explicitly as needed below. Do not assign an explicitly cast
739 Frequency : only for rhel5
741 Description: Kernel patches update for RHEL5 2.6.18-8.1.10.el5.
742 Details : Modify the target file & which_kernel.
744 Severity : enhancement
746 Description: omit set fsid for export NFS
747 Details : fix set/restore device id for avoid EMFILE error and mark lustre fs
748 as FS_REQUIRES_DEV for avoid problems with generate fsid.
752 Frequency : Always, for kernels after 2.6.16
753 Description: Fix warning idr_remove called for id=.. which is not allocated.
754 Details : Last kernels save old s_dev before kill super and not allow
755 to restore from callback - restore it before call kill_anon_super.
759 Description: buffer overruns could theoretically occur
760 Details : llapi_semantic_traverse() modifies the "path" argument by
761 appending values to the end of the origin string, and a
762 overrun may occur. Adding buffer overrun check in liblustreapi.
766 Description: Fix error on 'ls .' at the top of the Lustre mount.
767 Details : Don't revalidate dentry if it is a root dentry.
771 Description: Kernel patches update for RHEL4 2.6.9-55.0.6.
772 Details : Modify vm-tunables-rhel4.patch.
776 Description: Kernel config for 2.6.18-vanilla.
777 Details : Modify targets/2.6-vanilla.target.in.
778 Add config file kernel-2.6.18-2.6-vanilla-i686.config.
779 Add config file kernel-2.6.18-2.6-vanilla-i686-smp.config.
780 Add config file kernel-2.6.18-2.6-vanilla-x86_64.config.
781 Add config file kernel-2.6.18-2.6-vanilla-x86_64-smp.config.
785 Description: improve handling recoverable errors
786 Details : if request processig with error which can be recoverable on server
787 request should be resend, otherwise page released from cache and
792 Description: Kernel patches update for RHEL5 2.6.18-8.1.14.el5.
793 Details : Modify target file & which_patch.
794 A flaw was found in the IA32 system call emulation provided
795 on AMD64 and Intel 64 platforms. An improperly validated 64-bit
796 value could be stored in the %RAX register, which could trigger an
797 out-of-bounds system call table access. An untrusted local user
798 could exploit this flaw to run code in the kernel
799 (ie a root privilege escalation). (CVE-2007-4573).
803 Description: O_DIRECT bypasses client statistics.
804 Details : When running with O_DIRECT I/O, neither the client rpc_stats nor
805 read_ahead_stats were updated. copied the stats section from
806 osc_send_oap_rpc() into async_internal().
810 Description: Add jbd statistics patch for RHEL5 and 2.6.18-vanilla
814 Description: change order of libsysio includes
815 Details : '#include sysio.h' should always come before '#include xtio.h'
819 Description: handle "serious error: objid * already exists" more gracefully
820 Details : If LAST_ID value on disk is smaller than the objects existing in
821 the O/0/d* directories, it indicates disk corruption and causes an
822 LBUG(). If the object is 0-length, then we should use the existing
823 object. This will help to avoid a full fsck in most cases.
825 Severity : enhancement
827 Description: adapt the lustre_config script to support the upgrade case
828 Details : Add "-u" option for lustre_config script to support upgrading 1.4
829 server targets to 1.6 in parallel.
833 Description: To avoid grant space > avaible space when the disk is almost
834 full. Without this patch you might see the error "grant XXXX >
835 available" or some LBUG about grant, when the disk is almost
837 Details : In filter_check_grant, for non_grant cache write, we should
838 check the left space by if (*left > ungranted + bytes), instead
839 of (*left > ungranted), because only we are sure the left space
840 is enough for another "bytes", then the ungrant space should be
841 increase. In client, we should update cl_avail_grant only there
842 is OBD_MD_FLGRANT in the reply.
846 Description: Update RHEL 4 kernel to fix local root privilege escalation.
847 Details : Update to the latest RHEL 4 kernel to fix the vulnerability
848 described in CVE-2007-4573. This problem could allow untrusted
849 local users to gain root access.
852 Frequency : when using O_DIRECT and quotas
854 Description: Incorrect file ownership on O_DIRECT output files
855 Details : block usage reported by 'lfs quota' does not take into account
856 files that have been written with O_DIRECT.
861 Description: touch file failed when fs is not full
862 Details : OST in recovery should not be discarded by MDS in alloc_qos(),
863 otherwise we can get ENOSP while fs is not full.
867 Description: parallel lock callbacks
868 Details : Instead of sending blocking and completion callbacks as separated
869 requests, adding them to a set and sending in parallel.
872 Frequency : only for Cray XT3
873 Bugzilla : 12829/13455
874 Description: Changing primary group doesn't change the group lustre assigns to
876 Details : When CRAY_XT3 is defined, the fsgid supplied by the client is
877 overridden with the primary group provided by the group upcall,
878 whereas the supplied fsgid can be trusted if it is in the list of
879 supplementary groups returned by the group upcall.
881 Severity : enhancement
883 Description: Allow masking D_WARNING, D_ERROR messages from console
884 Details : Console messages can now be disabled via lnet.printk.
888 Description: User code with malformed file open parameter crashes client node
889 Details : Before packing join_file req, all the related reference should be
890 checked carefully in case some malformed flags cause fake
891 join_file req on client.
895 Description: LDLM_ENQUEUE races with LDLM_CP_CALLBACK
896 Details : ldlm_completion_ast() assumes that a lock is granted when the req
897 mode is equal to the granted mode. However, it should also check
898 that LDLM_FL_CP_REQD is not set.
902 Description: Heavy nfs access might result in deadlocks
903 Details : After ELC code landed, it is now improper to enqueue any mds
904 locks under och_sem, because enqueue might want to decide to
905 cancel open locks for same inode we are holding och_sem for.
909 Description: Client eviction while running blogbench
910 Details : A lot of unlink operations with concurrent I/O can lead to a
911 deadlock causing evictions. To address the problem, the number of
912 oustanding OST_DESTROY requests is now throttled to
913 max_rpcs_in_flight per OSC and LDLM_FL_DISCARD_DATA blocking
914 callbacks are processed in priority.
918 Description: enable ACLs on MDS by default
919 Details : ACLs must be enabled on MDS by default.
922 Frequency : PPC/PPC64 only
924 Description: conflicts between asm-ppc64/types.h and lustre_types.h
925 Details : fix duplicated definitions between asm-ppc64/types.h and
926 lustre_types.h on PPC.
929 Frequency : PPC/PPC64 only
931 Description: asm-ppc/segment.h does not exist
932 Details : fix compile issue on PPC.
936 Description: better handle error messages in extents code
939 Frequency : RHEL4 only
941 Description: mkfs is very slow on IA64/RHEL4
942 Details : A performance regression has been discovered in the MPT Fusion
943 driver between versions 3.02.73rh and 3.02.99.00rh. As a
944 consequence, we have downgraded the MPT Fusion driver in the RHEL4
945 kernel from 3.02.99.00 to 3.02.73 until this problem is fixed.
947 Severity : enhancement
949 Description: SNMP support enhancement
950 Details : Adding total number of sampled request for an MDS node in snmp
953 Severity : enhancement
955 Description: Optimize ldlm waiting list processing for PR extent locks
956 Details : When processing waiting list for read extent lock and meeting read
957 lock that is same or wider to it that is not contended, skip
958 processing rest of the list and immediatelly return current
959 status of conflictness, since we are guaranteed there are no
960 conflicting locks in the rest of the list.
964 Description: Time out and refuse to reconnect
965 Details : When the failover node is the primary node, it is possible
966 to have two identical connections in imp_conn_list. We must
967 compare not conn's pointers but NIDs, otherwise we can defeat
968 connection throttling.
972 Description: port llog fixes from b1_6 into HEAD
973 Details : Port llog reference couting and some llog cleanups from b1_6
974 (bug 10800) into HEAD, for protect from panic and access to already
975 free llog structures.
979 Description: Detect stride IO mode in read-ahead
980 Details : When a client does stride read, read-ahead should detect that and
981 read-ahead pages according to the detected stride pattern.
985 Description: data checksumming impacts single node performance
986 Details : add support for several checksum algorithm. Currently, only CRC32
987 and Adler-32 are supported. The checksum type can be changed on
988 the fly via /proc/fs/lustre/osc/*/checksum_type.
992 Description: use adler32 for page checksums
993 Details : when available, use the Adler-32 algorithm instead of CRC32 for
998 Description: build for x2 fails
999 Details : fix compile issue on Cray systems.
1003 Description: Properly match for duplicate locks
1004 Details : Due to different lock order from skiplists code, we need to
1005 traverse entire list for now
1008 Frequency : only on PPC/SLES10
1010 Description: "BITS_PER_LONG is not 32 or 64" in linux/idr.h
1011 Details : On SLES10/PPC, fs.h includes idr.h which requires BITS_PER_LONG to
1012 be defined. Add a hack in mkfs_lustre.c to work around this compile
1017 Description: LASSERT on MDS when client holding flock lock dies
1018 Details : ldlm pool logic depends on number of granted locks equal to
1019 number of released locks which is not true for flock locks, so
1020 just exclude such locks from consideration.
1024 Description: MDS deadlock with many ll_sync_lov threads and I/O stalled
1025 Details : Use fsfilt_sync() for both the whole filesystem sync and
1026 individual file sync to eliminate dangerous inode locking
1027 with I_LOCK that can lead to a deadlock.
1031 Description: performance in 1.6.3
1032 Details : Force q->max_phys_segments to MAX_PHYS_SEGMENTS on SLES10 to be
1033 sure that 1MB requests are not fragmented by the block layer.
1035 Severity : enhancement
1037 Description: organize the server-side client stats on per-nid basis
1038 Details : Change the structure of stats under obdfilter and mds to
1046 The "uuid"s file would list the uuids of _active_ exports.
1047 And the clear entry is to clear all stats and stale nids.
1049 Severity : enhancement
1051 Description: eliminate client locks in face of contention
1052 Details : file contention detection and lockless i/o implementation
1053 for contended files.
1057 Description: Reinitialize optind to 0 so that interactive lfs works in all cases
1060 Frequency : very rare, if additional xattrs are used on kernels >= 2.6.12
1062 Description: MDS may lose file striping (and hence file data) in some cases
1063 Details : If there are additional extended attributes stored on the MDS,
1064 in particular ACLs, SELinux, or user attributes (if user_xattr
1065 is specified for the client mount options) then there is a risk
1066 of attribute loss. Additionally, the Lustre file striping
1067 needs to be larger than default (e.g. striped over all OSTs),
1068 and an additional attribute must be stored initially in the
1069 inode and then increase in size enough to be moved to the
1070 external attribute block (e.g. ACL growing in size) for file
1075 Description: skiplist implementation simplification
1076 Details : skiplists are used to group compatible locks on granted list
1077 that was implemented as tracking first and last lock of each lock group
1078 the patch changes that to using doubly linked lists
1082 Description: MDS LBUG: ASSERTION(!IS_ERR(dchild))
1083 Details : Change LASSERTs to client eviction (i.e. abort client's recovery)
1084 because LASSERT on both the data supplied by a client, and the data
1085 on disk is dangerous and incorrect.
1087 Severity : enhancement
1089 Description: Slow trucate/writes to huge files at high offsets.
1090 Details : Directly associate cached pages to lock that protect those pages,
1091 this allows us to quickly find what pages to write and remove
1092 once lock callback is received.
1094 --------------------------------------------------------------------------------
1096 2007-08-10 Cluster File Systems, Inc. <info@clusterfs.com>
1098 * Support for kernels:
1099 2.6.5-7.283 (SLES 9),
1100 2.6.9-55.EL (RHEL 4),
1101 2.6.16.46-0.14 (SLES 10),
1102 2.6.18.8 vanilla (kernel.org)
1103 * Client support for unpatched kernels:
1104 (see http://wiki.lustre.org/index.php?title=Patchless_Client)
1105 2.6.16 - 2.6.22 vanilla (kernel.org)
1106 * Due to recently discovered recovery problems, we do not recommend
1107 using patchless RHEL 4 clients with this or any earlier release.
1108 * Recommended e2fsprogs version: 1.39.cfs8
1109 * Note that reiserfs quotas are disabled on SLES 10 in this kernel.
1110 * Starting with this release, the ldiskfs backing filesystem required
1111 by Lustre is now in its own package, lustre-ldiskfs. This package
1112 should be installed. It is versioned separately from Lustre and
1113 may be released separately in future.
1117 Description: block reactivating mgc import until all deactivates complete
1118 Details : Fix race when failing back MDT/MGS to itself (testing)
1121 Frequency : at statup only
1123 Description: mds_lov_synchronize race leads to various problems
1124 Details : simultaneous MDT->OST connections at startup can cause the
1125 sync to abort, leaving the OSC in a bad state.
1127 Severity : enhancement
1129 Description: add optional extra BUILD_VERSION info
1130 Details : add a new environment variable (namely LUSTRE_VERS) which allows
1131 to override the lustre version.
1134 Frequency : 2.6.18 servers only
1136 Description: ll_kern_mount() doesn't release the module reference
1137 Details : The ldiskfs module reference count never drops down to 0
1138 because ll_kern_mount() doesn't release the module reference.
1143 Description: server LBUG when using old ost_num_threads parameter
1144 Details : Accept the old ost_num_threads parameter but warn that it
1145 is deprecated, and fix an off-by-one error that caused an LBUG.
1150 Description: Transient SCSI error results in persistent IO issue
1151 Details : iobuf->dr_error is not reinitialized to 0 between two
1155 Frequency : sometimes when underlying device returns I/O errors
1157 Description: OSTs not going read-only during write failures
1158 Details : OSTs are not remounted read-only when the journal commit threads
1159 get I/O errors because fsfilt_ext3 calls journal_start/stop()
1160 instead of the ext3 wrappers.
1164 Description: poor connect scaling with increasing client count
1165 Details : Don't run filter_grant_sanity_check for more than 100 exports
1166 to improve scaling for large numbers of clients.
1169 Frequency : SLES10 only
1171 Description: sanity-quota.sh quotacheck failed: rc = -22
1172 Details : Quotas cannot be enabled on SLES10.
1175 Frequency : liblustre clients only
1177 Description: getdirentries does not give error when run on compute nodes
1178 Details : getdirentries does not fail when the size specified as an argument
1179 is too small to contain at least one entry
1181 Severity : enhancement
1183 Description: Add LNET router traceability for debug purposes
1184 Details : If a checksum failure occurs with a router as part of the
1185 IO path, the NID of the last router that forwarded the bulk data
1186 is printed so it can be identified.
1191 Description: OST "spontaneously" evicts client; client has imp_pingable == 0
1192 Details : Due to a race condition, liblustre clients were occasionally
1193 evicted incorrectly.
1195 Severity : enhancement
1197 Description: lfs setstripe use optional parameters instead of postional
1200 Severity : enhancement
1202 Description: Nanosecond timestamp support for ldiskfs
1203 Details : The on-disk ldiskfs filesystem has added support for nanosecond
1204 resolution timestamps. There is not yet support for this at
1205 the Lustre filesystem level.
1208 Frequency : during server recovery
1210 Description: MDS failing to send precreate requests due to OSCC_FLAG_RECOVERING
1211 Details : request with rq_no_resend flag not awake l_wait_event if they get a
1215 Frequency : nfs export on patchless client
1217 Description: connectathon hang when test nfs export over patchless client
1218 Details : Disconnected dentry cannot be found with lookup, so we do not need
1219 to unhash it or make it invalid
1222 Description: fix llapi_lov_get_uuids() to allow many OSTs to be returned
1223 Details: : Change llapi_lov_get_uuids() to read the UUIDs from /proc instead
1224 of using an ioctl. This allows lfsck for > 160 OSTs to succeed.
1229 Description: open req refcounting wrong on reconnect
1230 Details : If reconnect happened between getting open reply from server and
1231 call to mdc_set_replay_data in ll_file_open, we will schedule
1232 replay for unreferenced request that we are about to free.
1233 Subsequent close will crash in variety of ways.
1234 Check that request is still eligible for replay in
1235 mdc_set_replay_data().
1240 Description: disable writes to filesystem when reading health_check file
1241 Details : the default for reading the health_check proc file has changed
1242 to NOT do a journal transaction and write to disk, because this
1243 can cause reads of the /proc file to hang and block HA state
1244 checking on a healthy but otherwise heavily loaded system. It
1245 is possible to return to the previous behaviour during configure
1246 with --enable-health-write.
1248 Severity : enhancement
1250 Description: 64-bit inode version
1251 Details: : Add a on-disk 64-bit inode version for ext3 to track changes made
1252 to the inode. This will be required for version-based recovery.
1257 Description: MDS fails to start if a duplicate client export is detected
1258 Details : in some rare cases it was possible for a client to connect to
1259 an MDS multiple times. Upon recovery the MDS would detect this
1260 and fail during startup. Handle this more gracefully.
1262 Severity : enhancement
1264 Description: Add -o localflock option to simulate old noflock
1266 Details : This will achieve local-only flock/fcntl locks
1272 Description: log_commit_thread vs filter_destroy race leads to crash
1273 Details : Take import reference before releasing llog record semaphore
1278 Description: Wrong request locking in request set processing
1279 Details : ptlrpc_check_set wrongly uses req->rq_lock for proctect add to
1280 imp_delayed_list, in this place should be used imp_lock.
1283 Frequency : when reconnection
1285 Description: Grant Leak when osc reconnect to OST
1286 Details : When osc reconnect ost, OST(filter) should check whether it
1287 should grant more space to client by comparing fed_grant and
1288 cl_avail_grant, and return the granted space to client instead
1289 of "new granted" space, because client will call osc_init_grant
1290 to update the client grant space info.
1293 Frequency : when client reconnect to OST
1295 Description: Grant Leak when osc do resend and replay bulk write
1296 Details : When osc reconnect to OST, OST(filter)should clear grant info of
1297 bulk write request, because the grant info while be sync between
1298 OSC and OST when reconnect, and we should ignore the grant info
1299 these of resend/replay write req.
1304 Description: Grant space more than avaiable left space sometimes.
1305 Details : When then OST is about to be full, if two bulk writing from
1306 different clients came to OST. Accord the avaliable space of the
1307 OST, the first req should be permitted, and the second one
1308 should be denied by ENOSPC. But if the seconde arrived before
1309 the first one is commited. The OST might wrongly permit second
1310 writing, which will cause grant space > avaiable space.
1313 Frequency : when client is evicted
1315 Description: Grant might be wrongly erased when osc is evicted by OST
1316 Details : when the import is evicted by server, it will fork another
1317 thread ptlrpc_invalidate_import_thread to invalidate the
1318 import, where the grant will be set to 0. While the original
1319 thread will update the grant it got when connecting. So if
1320 the former happened latter, the grant will be wrongly errased
1321 because of this race.
1326 Description: Checking Stale with correct fid
1327 Details : ll_revalidate_it should uses de_inode instead of op_data.fid2
1328 to check whether it is stale, because sometimes, we want the
1329 enqueue happened anyway, and op_data.fid2 will not be initialized.
1331 Severity : enhancement
1333 Description: update patchless client
1334 Details : Add support for patchless client with 2.6.20, 2.6.21 and RHEL 5
1337 Frequency : only with 2.4 kernel
1339 Description: random memory corruption
1340 Details : size of struct ll_inode_info is to big for union inode.u and this
1341 can be cause of random memory corruption.
1346 Description: Memory leak in recovery
1347 Details : Lov_mds_md was not free in an error handler in mds_create_object.
1348 It should also check obd_fail before fsfilt_start, otherwise if
1349 fsfilt_start return -EROFS,(failover mds during mds recovery).
1350 then the req will return with repmsg->transno = 0 and rc = EROFS.
1351 and we met hit the assert LASSERT(req->rq_reqmsg->transno ==
1352 req->rq_repmsg->transno) in ptlrpc_replay_interpret. Fcc should
1353 be freed no matter whether fsfilt_commit success or not.
1356 Frequency : only with huge count clients
1358 Description: Prevents from taking the superblock lock in llap_from_page for
1360 Details : using LL_ORIGIN_REMOVEPAGE origin flag instead of LL_ORIGIN_UNKNOW
1361 for llap_from_page call in ll_removepage prevents from taking the
1362 superblock lock for a soon died page.
1367 Description: Not check open intent error before release open handle
1368 Details : in some rare cases, the open intent error is not checked before
1369 release open handle, which may cause
1370 ASSERTION(open_req->rq_transno != 0), because it tries to release
1371 the failed open handle.
1376 Description: Set cat log bitmap only after create log success.
1377 Details : in some rare cases, the cat log bitmap is set too early. and it
1378 should be set only after create log success.
1382 Description: Accessing a block bevice can re-enable I/O when Lustre is
1383 tearing down a device.
1384 Details : dev_clear_rdonly(bdev) must be called in kill_bdev() instead of
1389 Description: service threads may hog cpus when there are a lot of requests
1390 Details : Insert cond_resched to give other threads a chance to use some CPU
1395 Description: the cat log was not initialized in recovery
1396 Details : When mds(mgs) do recovery, the tgt_count might be zero, so the
1397 unlink log on mds will not be initialized until mds post
1398 recovery. And also in mds post recovery, the unlink log will
1399 initialization will be done asynchronausly, so there will be race
1400 between add unlink log and unlink log initialization.
1404 Description: brw_stats were being printed incorrectly
1405 Details : brw_stats were being printed as log2 but all of them were not
1406 recorded as log2. Also remove some code duplication arising from
1407 filter_tally_{read,write}.
1411 Frequency : rare, only in recovery.
1412 Description: ASSERTION(req->rq_type != LI_POISON) failed
1413 Details : imp_lock should be held while iterating over imp_sending_list for
1414 prevent destroy request after get timeout in ptlrpc_queue_wait.
1418 Description: replay-single.sh test 52 fails
1419 Details : A lock's skiplist need to be cleanup when it being unlinked
1420 from its resource list.
1424 Description: Short directio read returns full requested size rather than
1426 Details : Direct I/O operations should return actual amount of bytes
1427 transferred rather than requested size.
1429 Severity : enhancement
1431 Description: metadata RPC reduction (e.g. for rm performance)
1432 Details : decrease the amount of synchronous RPC between clients and servers
1433 by canceling conflicing lock before the operation on the client
1434 and packing thier handles into the main operation RPC to server.
1436 Severity : enhancement
1438 Description: Async OSC create to avoid the blocking unnecessarily.
1439 Details : If a OST has no remain object, system will block on the creating
1440 when need to create a new object on this OST. Now, ways use
1441 pre-created objects when available, instead of blocking on an
1442 empty osc while others are not empty. If we must block, we block
1443 for the shortest possible period of time.
1445 Severity : enhancement
1447 Description: refine locking for avoid write wrong info into lov_objid file
1448 Details : fix possible races with add new target and write/update data in
1451 --------------------------------------------------------------------------------
1453 2007-05-03 Cluster File Systems, Inc. <info@clusterfs.com>
1458 Frequency : on some architectures
1460 Description: 1.6 client sometimes fails to mount from a 1.4 MDT
1461 Details : Uninitialized flags sometimes cause configuration commands to
1465 Frequency : patchless clients only
1467 Description: missing __iget() symbol export
1468 Details : The __iget() symbol export is missing. To avoid the need for
1469 this on patchless clients the deathrow inode reaper is turned
1470 off, and we depend on the VM to clean up old inodes. This
1471 dependency was during via the fix for bug 12181.
1473 --------------------------------------------------------------------------------
1475 2007-04-19 Cluster File Systems, Inc. <info@clusterfs.com>
1477 * CONFIGURATION CHANGE. This version of Lustre WILL NOT
1478 INTEROPERATE with older versions automatically. In many cases a
1479 special upgrade step is needed. Please read the
1480 user documentation before upgrading any part of a live system.
1481 * WIRE PROTOCOL CHANGE from previous 1.6 beta versions. This
1482 version will not interoperate with 1.6 betas before beta5 (1.5.95).
1483 * WARNING: Lustre configuration and startup changes are required with
1484 this release. See https://mail.clusterfs.com/wikis/lustre/MountConf
1490 Severity : enhancement
1492 Description: MountConf
1493 Details : Lustre configuration is now managed via mkfs and mount
1494 commands instead of lmc and lconf. New obd types (MGS, MGC)
1495 are added for dynamic configuration management. See
1496 https://mail.clusterfs.com/wikis/lustre/MountConf for
1499 Severity : enhancement
1501 Description: dynamic OST addition
1502 Details : OSTs can now be added to a live filesystem
1504 Severity : enhancement
1506 Description: startup order invariance
1507 Details : MDTs and OSTs can be started in any order. Clients only
1508 require the MDT to complete startup.
1510 Severity : enhancement
1512 Description: parallel, asynchronous orphan cleanup
1513 Details : orphan cleanup is now performed in separate threads for each
1514 OST, allowing parallel non-blocking operation.
1516 Severity : enhancement
1518 Description: optimized stripe assignment
1519 Details : stripe assignments are now made based on ost space available,
1520 ost previous usage, and OSS previous usage, in order to try
1521 to optimize storage space and networking resources.
1523 Severity : enhancement
1525 Description: Permanently set tunables
1526 Details : All writable /proc/fs/lustre tunables can now be permanently
1527 set on a per-server basis, at mkfs time or on a live system.
1529 Severity : enhancement
1531 Description: Lustre message v2
1532 Details : Add lustre message format v2.
1534 Severity : enhancement
1536 Description: client OST exclusion list
1537 Details : Clients can be started with a list of OSTs that should be
1538 declared "inactive" for known non-responsive OSTs.
1542 Description: SPEC SFS validation failure on NFS v2 over lustre.
1543 Details : Changes the blocksize for regular files to be 2x RPC size,
1544 and not depend on stripe size.
1546 Severity : enhancement
1548 Description: Multiple MD RPCs in flight.
1549 Details : Further unserialise some read-only MDS RPCs - learn about intents.
1550 To avoid overly-overloading MDS, introduce a limit on number of
1551 MDS RPCs in flight for a single client and add /proc controls
1552 to adjust this limit.
1554 Severity : enhancement
1556 Description: client read/write statistics
1557 Details : Add client read/write call usage stats for performance
1558 analysis of user processes.
1559 /proc/fs/lustre/llite/*/offset_stats shows non-sequential
1560 file access. extents_stats shows chunk size distribution.
1561 extents_stats_per_process show chunk size distribution per
1564 Severity : enhancement
1566 Description: mds statistics
1567 Details : Add detailed mds operations statistics in
1568 /proc/fs/lustre/mds/*/stats.
1572 Description: Failure of copying files with lustre special EAs.
1573 Details : Client side always return success for setxattr call for lustre
1574 special xattr (currently only "trusted.lov").
1579 Description: Refcount LNET uuids
1580 Details : The global LNET uuid list grew linearly with every startup;
1581 refcount repeated list entries instead of always adding to
1584 Severity : enhancement
1586 Description: Dynamic service threads
1587 Details : Within a small range, start extra service threads
1588 automatically when the request queue builds up.
1591 Frequency : mixed-endian client/server environments
1593 Description: mixed-endian crashes
1594 Details : The new msg_v2 system had some failures in mixed-endian
1597 Severity : enhancement
1599 Description: Easy OST removal
1600 Details : OSTs can be permanently deactivated with e.g. 'lctl
1601 conf_param lustre-OST0001.osc.active=0'
1603 Severity : enhancement
1605 Description: MGS proc entries
1606 Details : Added basic proc entries for the MGS showing what filesystems
1609 Severity : enhancement
1611 Description: provide MGS failover
1612 Details : Added config lock reacquisition after MGS server failover.
1614 Severity : enhancement
1616 Description: add Linux 2.4 support
1617 Details : Added support for RHEL 2.4.21 kernel for 1.6 servers and clients
1621 Description: a large application tries to do I/O to the same resource and dies
1622 in the middle of it.
1623 Details : Check the req->rq_arrival time after the call to
1624 ost_brw_lock_get(), but before we do anything about
1625 processing it & sending the BULK transfer request. This
1626 should help move old stale pending locks off the queue as
1627 quickly as obd_timeout.
1630 Frequency : when an incorrect nid is specified during startup
1632 Description: ptlrpc connect to non-existant node causes kernel crash
1633 Details : LNET can't be re-entered from an event callback, which
1634 happened when we expire a message after the export has been
1635 cleaned up. Instead, hand the zombie cleanup off to another
1638 Severity : enhancement
1640 Description: plain/inodebits lock performance improvement
1641 Details : Grouping plain/inodebits in granted list by their request modes
1642 and bits policy, thus improving the performance of search through
1646 Frequency : only if OST filesystem is corrupted
1648 Description: client incorrectly hits assertion in ptlrpc_replay_req()
1649 Details : for a short time RPCs with bulk IO are in the replay list,
1650 but replay of bulk IOs is unimplemented. If the OST filesystem
1651 is corrupted due to disk cache incoherency and then replay is
1652 started it is possible to trip an assertion. Avoid putting
1653 committed RPCs into the replay list at all to avoid this issue.
1656 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
1658 Description: System hang on startup
1659 Details : This bug allowed the liblustre (e.g. catamount) client to
1660 return to the app before handling all startup RPCs. This
1661 could leave the node unresponsive to lustre network traffic
1662 and manifested as a server ptllnd timeout.
1664 Severity : enhancement
1666 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
1667 Details : liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT
1668 boolean to control whether to print peer debug info when a
1669 client's RPC times out.
1672 Frequency : only for kernels with patches from Lustre below 1.4.3
1674 Description: Remove old rdonly API
1675 Details : Remove old rdonly API which unused from at least lustre 1.4.3
1678 Frequency : only for devices with external journals
1680 Description: Set external device read-only also
1681 Details : During a commanded failover stop, we set the disk device
1682 read-only while the server shuts down. We now also set any
1683 external journal device read-only at the same time.
1686 Frequency : when upgrading from 1.4 while trying to change parameters
1688 Description: The wrong (new) MDC name was used when setting parameters for
1689 upgraded MDT's. Also allows changing of OSC (and MDC)
1690 parameters if --writeconf is specified at tunefs upgrade time.
1693 Frequency : when setting specific ost indicies
1695 Description: QOS code breaks on skipped indicies
1696 Details : Add checks for missing OST indicies in the QOS code, so OSTs
1697 created with --index need not be sequential.
1699 Severity : enhancement
1701 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
1702 Details : The uninit_groups feature works in conjunction with the kernel
1703 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
1704 up the pass1 processing of e2fsck. This is a read-only feature
1705 in ldiskfs2 only, so older kernels and current ldiskfs cannot
1706 mount filesystems that have had this feature enabled.
1708 Severity : enhancement
1710 Description: Improve multi-block allocation algorithm to avoid fragmentation
1711 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1712 allocation locality and avoid filesystem fragmentation.
1714 ------------------------------------------------------------------------------
1716 2007-04-01 Cluster File Systems, Inc. <info@clusterfs.com>
1718 * Support for kernels:
1719 2.4.21-47.0.1.EL (RHEL 3)
1720 2.6.5-7.283 (SLES 9)
1721 2.6.9-42.0.10.EL (RHEL 4)
1722 2.6.12.6 vanilla (kernel.org)
1723 2.6.16.27-0.9 (SLES 10)
1724 * Recommended e2fsprogs version: 1.39.cfs5
1726 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1730 Frequency : occasional, depends on client load and configuration
1731 Bugzilla : 12181, 12203
1732 Description: data loss for recently-modified files
1734 Details : In some cases it is possible that recently written or created
1735 files may not be written to disk in a timely manner (this should
1736 normally be within 30s unless client IO load is very high).
1737 The problem appears as zero-length files or files that are a
1738 multiple of 1MB in size after a client crash or client eviction
1739 that are missing data at the end of the file.
1741 This problem is more likely to be hit on clients where files are
1742 repeatedly created and unlinked in the same directory, clients
1743 have a large amount of RAM, have many CPUs, the filesystem has
1744 many OSTs, the clients are rebooted frequently, and/or the files
1745 are not accessed by other nodes after being written.
1747 The presence of the problem can be detected by looking at
1748 /proc/sys/fs/inode-state. If the first number (nr_inodes) is
1749 smaller than the second (nr_unused) then dirty files will not
1750 be flushed automatically to disk. "sync; sleep 10" should be
1751 run several times on the node before unmounting it to update
1752 Lustre (this is also safe to run on nodes without this problem).
1754 There is also a related kernel bug in the RHEL4 4 2.6.9 kernel
1755 that can cause this same problem, so customers using that kernel
1756 also need to update the kernel in addition to Lustre. In order
1757 to properly fix this bug, the RHEL3 2.4.21 kernel is also updated.
1759 It is normal that files written just before a client crash (less
1760 than 30s) may not yet have been flushed to disk, even for local
1764 Frequency : frequent on thin XT3 nodes
1766 Description: UUID collision on thin XT3 Linux nodes
1767 Details : UUIDs on Compute Node Linux XT3 nodes were not generated
1768 randomly, since we relied on an insufficiently-seeded PRNG.
1773 Description: OSS hangs after "All ost request buffers busy"
1774 Details : A deadlock between quota and journal operations caused OSS
1775 hangs after printing "All ost request buffers busy."
1778 Frequency : always on liblustre builds
1780 Description: Cleanup compiler warnings on liblustre
1783 Frequency : always on liblustre builds on XT3
1785 Description: LC_CONFIG_CDEBUG don't run while build liblustre on XT3.
1789 Description: Addition of EXT3_FEATURE_RO_COMPAT_DIR_NLINKS flag for
1790 > 32000 subdirectories
1791 Details : Add EXT3_FEATURE_RO_COMPAT_DIR_NLINK flag to
1792 EXT3_FEATURE_RO_COMPAT_SUPP. This flag will be set whenever
1793 subdirectory count crosses 32000. This will aid e2fsck to
1794 correctly handle more than 32000 subdirectories.
1797 Frequency : liblustre (e.g. catamount) on a large cluster with >= 8 OSTs/OSS
1799 Description: System hang on startup
1800 Details : This bug allowed the liblustre (e.g. catamount) client to
1801 return to the app before handling all startup RPCs. This
1802 could leave the node unresponsive to lustre network traffic
1803 and manifested as a server ptllnd timeout.
1805 Severity : enhancement
1807 Description: Add "/proc/sys/lustre/debug_peer_on_timeout"
1808 (liblustre envirable: LIBLUSTRE_DEBUG_PEER_ON_TIMEOUT)
1809 boolean to control whether to print peer debug info when a
1810 client's RPC times out.
1815 Description: make O_SYNC working on 2.6 kernels
1816 Details : 2.6 kernels use different method for mark pages for write,
1817 so need add a code to lustre for O_SYNC work.
1822 Description: Failure to close file and release space on NFS
1823 Details : Put inode details into lock acquired in ll_intent_file_open.
1824 Use mdc_intent_lock in ll_intent_open to properly
1825 detect all kind of errors unhandled by mdc_enqueue.
1830 Description: proc file read during shutdown sometimes raced obd removal,
1832 Details : Add lock to prevent obd access after proc file removal.
1835 Frequency : Only for files larger than 4GB on 32-bit clients.
1837 Description: improperly doing page alignment of locks
1838 Details : Modify lustre core code to use CFS_PAGE_* defines instead of
1839 PAGE_*. Make CFS_PAGE_MASK a 64-bit mask.
1844 Description: RPCs being resent when they shouldn't be
1845 Details : Some RPCs that should not be resent are being resent. This
1846 can cause inconsistencies in the RPC state machine. Do not
1847 resend such requests.
1850 Frequency : rare, only with NFS export
1852 Description: Crash on NFS re-export node
1853 Details : under very unusual load conditions an assertion is hit in
1854 ll_intent_file_open()
1857 Frequency : only if OST filesystem is corrupted
1859 Description: client incorrectly hits assertion in ptlrpc_replay_req()
1860 Details : for a short time RPCs with bulk IO are in the replay list,
1861 but replay of bulk IOs is unimplemented. If the OST filesystem
1862 is corrupted due to disk cache incoherency and then replay is
1863 started it is possible to trip an assertion. Avoid putting
1864 committed RPCs into the replay list at all to avoid this issue.
1869 Description: large O_DIRECT requests fail under memory pressure/fragmentation
1870 Details : Large single O_DIRECT read and write calls can fail to allocate
1871 a sufficiently large buffer to process the request. In case of
1872 allocation failure the allocation is retried with a smaller
1873 buffer and broken into smaller requests.
1875 Severity : enhancement
1877 Description: Add -o localflock option to simulate old noflock behaviour.
1878 Details : This will achieve local-only flock/fcntl locks coherentness.
1883 Description: versioning check is incomplete
1884 Details : Checking the version difference of client vs. server, report
1885 error if the gap is too big.
1890 Description: add support PG_writeback bit
1891 Details : add support for PG_writeback bit for Lustre, for more carefull
1892 work with page cache in 2.6 kernel. This also fix some deadlocks
1893 and remove hack for work O_SYNC with 2.6 kernel.
1895 Severity : enhancement
1897 Description: Add uninit_groups feature to ldiskfs2 to speed up e2fsck
1898 Details : The uninit_groups feature works in conjunction with the kernel
1899 filesystem code (ldiskfs2 only) and e2fsprogs-1.39-cfs6 to speed
1900 up the pass1 processing of e2fsck. This is a read-only feature
1901 in ldiskfs2 only, so older kernels and current ldiskfs cannot
1902 mount filesystems that have had this feature enabled.
1904 Severity : enhancement
1906 Description: Improve multi-block allocation algorithm to avoid fragmentation
1907 Details : The mballoc3 code (ldiskfs2 only) adds new mechanisms to improve
1908 allocation locality and avoid filesystem fragmentation.
1910 ------------------------------------------------------------------------------
1912 2007-02-09 Cluster File Systems, Inc. <info@clusterfs.com>
1914 * Support for kernels:
1915 2.6.9-42.0.3.EL (RHEL 4)
1916 2.6.5-7.276 (SLES 9)
1917 2.4.21-47.0.1.EL (RHEL 3)
1918 2.6.12.6 vanilla (kernel.org)
1919 2.6.16.21-0.8 (SLES10)
1920 * Recommended e2fsprogs version: 1.39.cfs2-0
1922 * The backwards-compatible /proc/sys/portals symlink has been removed
1923 in this release. Before upgrading, please ensure that you change
1924 any configuration scripts or /etc/sysctl.conf files that access
1925 /proc/sys/portals/* or sysctl portals.* to use the corresponding
1926 entry in /proc/sys/lnet or sysctl lnet.*. This change can be made
1927 in advance of the upgrade on any system running Lustre 1.4.6 or
1928 newer, since /proc/sys/lnet was added in that version.
1929 * Note that reiserfs quotas are disabled on SLES 10 in this kernel
1933 Frequency : only when quota is used
1935 Description: avoid scanning export list for quota master
1936 Details : Change the algorithms to avoid scanning export list in order
1937 to improve the efficiency.
1940 Frequency : MDS failover only, very rarely
1942 Description: "went back in time" messages on mds failover
1943 Details : The greatest transno may be lost when the current operation
1944 finishes with an error (transno==0) and the client's last_rcvd
1945 record is over-written. Save the greatest transno in the
1946 mds_last_transno for this case.
1949 Frequency : always for specific kernels and striping counts
1951 Description: client may get "Matching packet too big" without ACL support
1952 Details : Clients compiled without CONFIG_FS_POSIX_ACL get an error message
1953 when trying to access files in certain configurations. The
1954 clients should in fact be denied when mounting because they do
1955 not understand ACLs.
1958 Frequency : Cray XT3 with more than 4000 clients and multiple jobs
1960 Description: many clients connecting with IO in progress causes connect timeouts
1961 Details : Avoid synchronous journal commits to avoid delays caused by many
1962 clients connecting/disconnecting when bulk IO is in progress.
1963 Queue liblustre connect requests on OST_REQUEST_PORTAL instead of
1964 OST_IO_PORTAL to avoid delays behind potentially many pending
1968 Frequency : occasionally with multiple writers to a single file
1970 Description: shared writes to file may result in wrong size reported by stat()
1971 Details : Allow growing of kms when extent lock is cancelled
1974 Frequency : always with random mmap IO to multi-striped file
1976 Description: mmap write might be lost if we are writing to a 'hole' in stripe
1977 Details : Only if the hole is at the end of OST object so that kms is too
1978 small. Fix is to increase kms accordingly in ll_nopage.
1981 Frequency : rare, only if OST filesystem is inconsistent with MDS filesystem
1983 Description: writes to a missing object would leak memory on the OST
1984 Details : If there is an inconsistency between the MDS and OST filesystems,
1985 such that the MDS references an object that doesn't exist, writes
1986 to that object will leak memory due to incorrect cleanup in the
1987 error handling path, eventually running out of memory on the OST.
1992 Description: Creating too long symlink causes lustre errors
1993 Details : Check symlink and name lengths before sending requests to MDS.
1996 Frequency : only if flock is enabled (not on by default)
1998 Description: posix locks not released on fd closure on 2.6.9+
1999 Details : We failed to add posix locks to list of inode locks on 2.6.9+
2000 kernels, this caused such locks not to be released on fd close and
2001 then assertions on fs unmount about still used locks.
2004 Frequency : MDS failover only, very rarely
2006 Description: clients may get ASSERTION(granted_lock != NULL)
2007 Details : When request was taking a long time, and a client was resending
2008 a getattr by name lock request. The were multiple lock requests
2009 with the same client lock handle and
2010 mds_getattr_name->fixup_handle_for_resent_request found one of the
2011 lock handles but later failed with ASSERTION(granted_lock != NULL).
2016 Description: handle->h_buffer_credits > 0, assertion failure
2017 Details : h_buffer_credits is zero after truncate, causing assertion
2018 failure. This patch extends the transaction or creates a new
2022 Frequency : NFS re-export or patchless client
2023 Bugzilla : 11179, 10796
2024 Description: Crash on NFS re-export node (__d_move)
2025 Details : We do not want to hash the dentry if we don't have a lock.
2026 But if this dentry is later used in d_move, we'd hit uninitialised
2027 list head d_hash, so we just do this to init d_hash field but
2028 leave dentry unhashed.
2031 Frequency : NFS re-export or patchless client
2033 Description: NFS exports has problem with symbolic link
2034 Details : lustre client didn't properly install dentry when re-exported
2035 to NFS or running patchless client.
2038 Frequency : NFS re-export or patchless client
2040 Description: Various nfs/patchless fixes.
2041 Details : fixes reuse disconected alias for lookup process - this fixes
2042 warning "find_exported_dentry: npd != pd",
2043 fix permission error with open files at nfs.
2044 fix apply umask when do revalidate.
2047 Frequency : occasional
2049 Description: Crash on NFS re-export node
2050 Details : calling clear_page() on the wrong pointer triggered oops in
2051 generic_mapping_read().
2054 Frequency : rarely, using O_DIRECT IO
2056 Description: unaligned directio crashes client with LASSERT
2057 Details : check for unaligned buffers before trying any requests.
2060 Frequency : rarely, using CFS RAID5 patches in non-standard kernel series
2062 Description: stale data returned from RAID cache
2063 Details : If only a small amount of IO is done to the RAID device before
2064 reading it again it is possible to get stale data from the RAID
2065 cache instead of reading it from disk.
2068 Frequency : always for sles10 kernel
2070 Description: sles10 support
2071 Details : ll_follow_link: compile fixes and using of nd_set_link
2072 under newer kernels.
2075 Frequency : depends on arch, kernel and compiler version, always on sles10
2078 Description: recursive or deep enough symlinks cause stack overflow
2079 Details : getting rid of large stack-allocated variable in
2083 Frequency : depends on hardware
2085 Description: lustre write performance loss in the SLES10 kernel
2086 Details : the performance loss is caused by using of write barriers in the
2087 ext3 code. The SLES10 kernel turns barrier support on by
2088 default. The fix is to undo that change for ldiskfs.
2090 ------------------------------------------------------------------------------
2092 2006-12-09 Cluster File Systems, Inc. <info@clusterfs.com>
2094 * Support for kernels:
2095 2.6.9-42.0.3EL (RHEL 4)
2096 2.6.5-7.276 (SLES 9)
2097 2.4.21-47.0.1.EL (RHEL 3)
2098 2.6.12.6 vanilla (kernel.org)
2102 Frequency : quota enabled and large files being deleted
2104 Description: releasing more than 4GB of quota at once hangs OST
2105 Details : If a user deletes more than 4GB of files on a single OST it
2106 will cause the OST to spin in an infinite loop. Release
2107 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
2112 Description: statfs data retrieved from /proc may be stale or zero
2113 Details : When reading per-device statfs data from /proc, in the
2114 {kbytes,files}_{total,free,avail} files, it may appear
2115 as zero or be out of date.
2118 Frequency : systems with MD RAID1 external journal devices
2120 Description: lconf's call to blkid is confused by RAID1 journal devices
2121 Details : Use the "blkid -l" flag to locate the MD RAID device instead
2122 of returning all block devices that match the journal UUID.
2125 Frequency : always, for aggregate stripe size over 4GB
2127 Description: "lfs setstripe" fails assertion when setting 4GB+ stripe width
2128 Details : Using "lfs setstripe" to set stripe size * stripe count over 4GB
2129 will fail the kernel with "ASSERTION(lsm->lsm_xfersize != 0)"
2132 Frequency : always if "lfs find" used on a local file/directory
2134 Description: "lfs find" segfaults if used on a local file/directory
2135 Details : The case where a directory component was not specified wasn't
2136 handled correctly. Handle this properly.
2139 Frequency : always on ppc64
2141 Description: the write to an ext3 filesystem mounted with mballoc got stuck
2142 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
2143 perform endianness conversion.
2146 Frequency : rarely (truncate to non-zero file size after write under load)
2147 Bugzilla : 10730, 10687
2148 Description: Files padded with zeros to next 4K multiple
2149 Details : With filesystems mounted using the "extents" option (2.6 kernels)
2150 it is possible that files that are truncated to a non-zero size
2151 immediately after being written are filled with zero bytes beyond
2152 the truncated size. No file data is lost.
2154 Severity : enhancement
2156 Description: Allow recovery/failover for liblustre clients.
2157 Details : liblustre clients were unaware of failover configurations until
2160 Severity : enhancement
2162 Description: user file locks should fail when not mounting with flock option
2163 Details : Set up an error-returning stub in ll_file_operations.lock field
2164 to prevent incorrect behaviour when client is mounted without
2165 flock option. Also, set up properly f_op->flock field for
2169 Frequency : always on ia64
2171 Description: "lfs df" loops on printing out MDS statfs information
2172 Details : The obd_ioctl_data was not initialized and in some systems
2173 this caused a failure during the ioctl that did not return
2174 an error. Initialize the struct and return an error on failure.
2177 Frequency : SLES 9 only
2179 Description: Error of copying files with lustre special EAs as root
2180 Details : Client side always return success for setxattr call for lustre
2181 special xattr (currently only "trusted.lov").
2184 Frequency : rarely on clusters with both ia64+i386 clients
2186 Description: ia64+i686 clients doing shared IO on the same file may LBUG
2187 Details : In rare cases when both ia64+i686 (or other mixed-PAGE_SIZE)
2188 clients are doing concurrent writes to the same file it is
2189 possible that the ia64 clients may LASSERT because the OST
2190 extent locks are not PAGE_SIZE aligned. Ensure that grown
2191 locks are always aligned on the request boundary.
2194 Frequency : specific use, occasional
2196 Description: Overwriting in use executable truncates on-disk binary image
2197 Details : If one node attempts to overwrite an executable in use by
2198 another node, we now correctly return ETXTBSY instead of
2199 truncating the file.
2201 Severity : enhancement
2203 Description: Async OSC create to avoid the blocking unnecessarily.
2204 Details : If a OST has no remain object, system will block on the creating
2205 when need to create a new object on this OST. Now, ways use
2206 pre-created objects when available, instead of blocking on an
2207 empty osc while others are not empty. If we must block, we block
2208 for the shortest possible period of time.
2213 Description: chmod on Lustre root is propagated to other clients
2214 Details : Re-validate root's dentry in ll_lookup_it to avoid having it
2215 invalid by the follow_mount time.
2218 Frequency : liblustre clients only
2220 Description: Race in 'instant cancel' lock handling could lead to such locks
2221 never to be granted in case of SMP MDS
2222 Details : Do not destroy not yet granted but cbpending locks in
2226 Frequency : replay/resend of open
2228 Description: non null lock assetion failure in mds_intent_policy
2229 Details : Trying to replay/resend lockless open requests resulted in
2230 mds_open() returning 0 with no lock. Now it sets a flag if
2231 a lock is going to be returned.
2233 Severity : enhancement
2235 Description: Checksum enhancements
2236 Details : New checksum enhancements allow for resending RPCs that failed
2239 Severity : enhancement
2241 Description: Tunables on number of dirty pages in cacche
2242 Details : Allow to set limit on number of dirty pages cached.
2247 Description: client crash on unmount - lock still has references
2248 Details : In some error handling cases it was possible to leak a lock
2249 reference on a client while accessing a file. This was not
2250 harmful to the client during operation, but would cause the
2251 client to crash when the filesystem is unmounted.
2254 Frequency : specific case, rare
2256 Description: ETXTBSY on mds though file not in use by client
2257 Details : ETXTBSY is no longer incorrectly returned when attempting to
2258 chmod or chown a directory that the user previously tried to
2259 execute or a currently-executing binary.
2262 Frequency : extremely rare except on liblustre-based clients
2264 Description: Lustre space not freed when files are deleted
2265 Details : Clean up open-unlinked files after client eviction. Previously
2266 the unlink was skipped and the files remained as orphans.
2271 Description: OST failure "would be an LBUG" in waiting_locks_callback()
2272 Details : In some cases it was possible to send a blocking callback to
2273 a client doing a glimpse, even though that client didn't get
2274 a lock granted. When the glimpse lock is cancelled on the OST
2275 the freed lock is left on the waiting list and corrupted the list.
2278 Frequency : all core dumps
2280 Description: Broke core dumps to lustre
2281 Details : Negative dentry may be unhashed if parent does not have UPDATE
2282 lock, but some callers, e.g. do_coredump, expect dentry to be
2283 hashed after successful create, hash it in ll_create_it.
2285 ------------------------------------------------------------------------------
2287 2006-09-13 Cluster File Systems, Inc. <info@clusterfs.com>
2289 * Support for kernels:
2290 2.6.9-42.0.2.EL (RHEL 4)
2291 2.6.5-7.276 (SLES 9)
2292 2.4.21-40.EL (RHEL 3)
2293 2.6.12.6 vanilla (kernel.org)
2297 Frequency : always on RHEL 3
2299 Description: Number of open files grows over time
2300 Details : The number of open files grows over time, whether or not
2301 Lustre is started. This was due to a filp leak introduced
2302 by one of our kernel patches.
2304 ------------------------------------------------------------------------------
2306 08-20-2006 Cluster File Systems, Inc. <info@clusterfs.com>
2308 * Support for kernels:
2309 2.6.9-42.EL (RHEL 4)
2310 2.6.5-7.276 (SLES 9)
2311 2.4.21-40.EL (RHEL 3)
2312 2.6.12.6 vanilla (kernel.org)
2317 Bugzilla : 5719, 9635, 9792, 9684
2318 Description: OST (or MDS) trips assertions in (re)connection under heavy load
2319 Details : If a server is under heavy load and cannot reply to new
2320 connection requests before the client resends the (re)connect,
2321 the connection handling code can behave badly if two service
2322 threads are concurrently handing separate (re)connections from
2323 the same client. Add better locking to the connection handling
2324 code, and ensure that only a single connection will be processed
2325 for a given client UUID, even if the lock is dropped.
2327 Severity : enhancement
2329 Description: add TCP zero-copy support to kernel
2330 Details : Add support to the kernel TCP stack to allow zero-copy bulk
2331 sends if the hardware supports scatter-gather and checksumming.
2332 This allows socklnd to do client-write and server-read more
2333 efficiently and reduce CPU utilization from skbuf copying.
2336 Frequency : only if NFS exporting from client
2338 Description: NULL pointer deref in ll_iocontrol() if chattr mknod file
2339 Details : If setting attributes on a file created under NFS that had
2340 never been opened it would be possible to oops the client
2341 if the file had no objects.
2344 Frequency : always for liblustre
2346 Description: liblustre client does MDS+OSTs setattr RPC for each write
2347 Details : When doing a write from a liblustre client, the client
2348 incorrectly issued an RPC to the MDS and each OST the file was
2349 striped over in order to update the timestamps. When writing
2350 with small chunks and many clients this could overwhelm the MDS
2351 with RPCs. In all cases it would slow down the write because
2352 these RPCs are unnecessary.
2354 Severity : enhancement
2356 Description: allow number of MDS service threads to be changed at module load
2357 Details : It is now possible to change the number of MDS service threads
2358 running. Adding "options mds mds_num_threads={N}" to the MDS's
2359 /etc/modprobe.conf will set the number of threads for the next
2360 time Lustre is restarted (assuming the "mds" module is also
2361 reloaded at that time). The default number of threads will
2362 stay the same, 32 for most systems.
2367 Description: OST crash if filesystem is unformatted or corrupt
2368 Details : If an OST is started on a device that has never been formatted
2369 or if the filesystem is corrupt and cannot even mount then the
2370 error handling cleanup routines would dereference a NULL pointer.
2375 Description: NULL pointer deref in llap_from_page.
2376 Details : get_cache_page_nowait can return a page with NULL (or otherwise
2377 incorrect) mapping if the page was truncated/reclaimed while it was
2378 searched for. Check for this condition and skip such pages when
2379 doing readahead. Introduce extra check to llap_from_page() to
2380 verify page->mapping->host is non-NULL (so page is not anonymous).
2383 Frequency : Sometimes when using sys_sendfile
2385 Description: "page not covered by a lock" warnings from ll_readpage
2386 Details : sendfile called ll_readpage without right page locks present.
2387 Now we introduced ll_file_sendfile that does necessary locking
2388 around call to generic_file_sendfile() much like we do in
2392 Frequency : with certain MDS communication failures at client mount time
2394 Description: NULL pointer deref after failed client mount
2395 Details : a client connection request may delayed by the network layer
2396 and not be sent until after the PTLRPC layer has timed out the
2397 request. If the client fails the mount immediately it will try
2398 to clean up before the network times out the request. Add a
2399 reference from the request import to the obd device and delay
2400 the cleanup until the network drops the request.
2403 Frequency : occasionally during client (re)connect
2405 Description: assertion failure during client (re)connect
2406 Details : processing a client connection request may be delayed by the
2407 client or server longer than the client connect timeout. This
2408 causes the client to resend the connection request. If the
2409 original connection request is replied in this interval, the
2410 client may trip an assertion failure in ptlrpc_connect_interpret()
2411 which thought it would be the only running connect process.
2414 Frequency : only with obd_echo servers and clients that are rebooted
2416 Description: kernel BUG accessing uninitialized data structure
2417 Details : When running an obd_echo server it did not start the ping_evictor
2418 thread, and when a client was evicted an uninitialized data
2419 structure was accessed. Start the ping_evictor in the RPC
2420 service startup instead of the OBD startup.
2422 Severity : enhancement
2423 Bugzilla : 10193 (patchless)
2424 Description: Remove dependency on various unexported kernel interfaces.
2425 Details : No longer need reparent_to_init, exit_mm, exit_files,
2426 sock_getsockopt, filemap_populate, FMODE_EXEC, put_filp.
2429 Frequency : rare (only users of deprecated and unsupported LDAP config)
2431 Description: write_conf for zeroconf mount queried LDAP incorrectly for client
2432 Details : LDAP apparently contains 'lustreName' attributes instead of
2433 'name'. A simple remapping of the name is sufficient.
2436 Frequency : rare (only with non-default dump_on_timeout debug enabled)
2438 Description: waiting_locks_callback trips kernel BUG if client is evicted
2439 Details : Running with the dump_on_timeout debug flag turned on makes
2440 it possible that the waiting_locks_callback() can try to dump
2441 the Lustre kernel debug logs from an interrupt handler. Defer
2442 this log dumping to the expired_lock_main() thread.
2444 Severity : enhancement
2446 Description: Support NFS exporting on 2.6 kernels.
2447 Details : Implement non-rawops metadata methods for NFS server to use without
2448 changing NFS server code.
2451 Frequency : very rare (synthetic metadata workload only)
2453 Description: two racing renames might cause an MDS thread to deadlock
2454 Details : Running the "racer" program may cause one MDS thread to rename
2455 a file from being the source of a rename to being the target of
2456 a rename at exactly the same time that another thread is doing
2457 so, and the second thread has already enqueued these locks after
2458 doing a lookup of the target and is trying to relock them in
2459 order. Ensure that we don't try to re-lock the same resource.
2462 Frequency : only very large systems with liblustre clients
2464 Description: slow eviction of liblustre clients with the "evict_by_nid" RPC
2465 Details : Use asynchronous set_info RPCs to send the "evict_by_nid" to
2466 all OSTs in parallel. This allows the eviction of stale liblustre
2467 clients to proceed much faster than if they were done in series,
2468 and also offers similar improvements for other set_info RPCs.
2473 Description: excessive CPU usage during initial read phase on client
2474 Details : During the initial read phase on a client, it would agressively
2475 retry readahead on the file, consuming too much CPU and impacting
2476 performance (since 1.4.5.8). Improve the readahead algorithm
2477 to avoid this, and also improve some other common cases (read
2478 of small files in particular, where "small" is files smaller than
2479 /proc/fs/lustre/llite/*/max_read_ahead_whole_mb, 2MB by default).
2484 Description: MDS crash when receiving packet with unknown intent.
2485 Details : Do not LBUG in unknown intent case, just return -EFAULT
2487 Severity : enhancement
2488 Bugzilla : 9293, 9385
2489 Description: MDS RPCs are serialised on client. This is unnecessary for some.
2490 Details : Do not serialize getattr (non-intent version) and statfs.
2493 Frequency : occasional, when OST network is overloaded/intermittent
2495 Description: client evicted by OST after bulk IO timeout
2496 Details : If a client sends a bulk IO request (read or write) the OST
2497 may evict the client if it is unresposive to its data GET/PUT
2498 request. This is incorrect if the network is overloaded (takes
2499 too long to transfer the RPC data) or dropped the OST GET/PUT
2500 request. There is no need to evict the client at all, since
2501 the pinger and/or lock callbacks will handle this, and the
2502 client can restart the bulk request.
2505 Frequency : Always when mmapping file with no objects
2507 Description: client crashes when mmapping file with no objects
2508 Details : Check that we actually have objects in a file before doing any
2509 operations on objects in ll_vm_open, ll_vm_close and
2515 Description: Request leak when working with deleted CWD
2516 Details : Introduce advanced request refcount tracking for requests
2517 referenced from lustre intent.
2519 Severity : Enhancement
2521 Description: Cache open file handles on client.
2522 Details : MDS now will return special lock along with openhandle, if
2523 requested and client is allowed to hold openhandle, even if unused,
2524 until such a lock is revoked. Helps NFS a lot, since NFS is opening
2525 closing files for every read/write openration.
2527 Severity : Enhancement
2529 Description: Cache open negative dentries on client when possible.
2530 Details : Guard negative dentries with UPDATE lock on parent dir, drop
2531 negative dentries on lock revocation.
2536 Description: Remounting a client read-only wasn't possible with a zconf mount
2537 Details : It wasn't possible to remount a client read-only with llmount.
2539 Severity : enhancement
2540 Description: Include MPICH 1.2.6 Lustre ADIO interface patch
2541 Details : In lustre/contrib/ or /usr/share/lustre in RPM a patch for
2542 MPICH is included to add Lustre-specific ADIO interfaces.
2543 This is based closely on the UFS ADIO layer and only differs
2544 in file creation, in order to allow the OST striping to be set.
2545 This is user-contributed code and not supported by CFS.
2550 Description: extended inode attributes (immutable, append-only) work improperly
2551 when 2.4 and 2.6 kernels are used on client/server or vice versa
2552 Details : Introduce kernel-independent values for these flags.
2554 Severity : enhancement
2557 Description: Allow fractional MB tunings for lustre in /proc/ filesystem.
2558 Details : Many of the /proc/ tunables can only be tuned at a megabyte
2559 granularity. Now, Fractional MB granularity is be supported,
2560 this is very useful for low memory system.
2562 Severity : enhancement
2564 Description: Getattr by fid
2565 Details : Getting a file attributes by its fid, obtaining UPDATE|LOOKUP
2566 locks, avoids extra getattr rpc requests to MDS, allows '/' to
2567 have locks and avoids getattr rpc requests for it on every stat.
2570 Frequency : Always, for filesystems larger than 2TB
2572 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
2573 Details : Kenrel kmalloc limits allocations to 128kB and this prevents
2574 filesystems larger than 2TB to be mounted with mballoc enabled.
2577 Frequency : Always, for 32-bit kernel without CONFIG_LBD and filesystem > 2TB
2579 Description: ldiskfs crash at mount for filesystem larger than 2TB with mballoc
2580 Details : If a 32-bit kernel is compiled without CONFIG_LBD enabled and a
2581 filesystems larger than 2TB is mounted then the kernel will
2582 silently corrupt the start of the filesystem. CONFIG_LBD is
2583 enabled for all CFS-supported kernels, but the possibility of
2584 this happening with a modified kernel config exists.
2586 Severity : enhancement
2588 Description: add client O_DIRECT support for 2.6 kernels
2589 Details : It is now possible to do O_DIRECT reads and writes to files
2590 in the Lustre client mountpoint on 2.6 kernel clients.
2592 Severity : enhancement
2594 Description: parallel glimpse, setattr, statfs, punch, destroy requests
2595 Details : Sends glimpse, setattr, statfs, punch, destroy requests to OSTs in
2596 parallel, not waiting for response from every OST before sending
2597 a rpc to the next OST.
2602 Description: setattr vs write race when updating file timestamps
2603 Details : Client processes that update a file timestamp into the past
2604 right after writing to the file (e.g. tar) it is possible that
2605 the updated file modification time can be reset to the current
2606 time due to a race between processing the setattr and write RPC.
2608 Severity : enhancement
2610 Description: Bring 'lfs find' closer in line with regular Linux find.
2611 Details : lfs find util supports -atime, -mtime, -ctime, -maxdepth, -print,
2612 -print0 options and obtains all the needed info through the lustre
2615 Severity : enhancement
2617 Description: support up to 1024 configured devices on one node
2618 Details : change obd_dev array from statically allocated to dynamically
2619 allocated structs as they are first used to reduce memory usage
2624 Description: Flush dirty partially truncated pages during truncate
2625 Details : Immediatelly flush partially truncated pages in filter_setattr,
2626 this way we completely avoid having any pages in page cache on OST
2627 and can retire ugly workarounds during writes to flush such pages.
2632 Description: i_sem vs transaction deadlock in mds_obd_destroy during unlink.
2633 Details : protect inode from truncation within vfs_unlink() context
2634 just take a reference before calling vfs_unlink() and release it
2635 when parent's i_sem is free.
2640 Description: last_id value checked outside lock on OST caused LASSERT failure
2641 Details : If there were multiple MDS->OST object precreate requests in
2642 flight, it was possible that the OST's last object id was checked
2643 outside a lock and incorrectly tripped an assertion. Move checks
2644 inside locks, and discard old precreate requests.
2647 Frequency : always, if extents are used on OSTs
2649 Description: index ei_leaf_hi (48-bit extension) is not zeroed in extent index
2650 Details : OSTs using the extents format would not zero the high 16 bits of
2651 the index physical block number. This is not a problem for any
2652 OST filesystems smaller than 16TB, and no kernels support ext3
2653 filesystems larger than 16TB yet. This is fixed in 1.4.7 (all
2654 new/modified files) and can be fixed for existing filesystems
2655 with e2fsprogs-1.39-cfs1.
2660 Description: import connection selection may be incorrect if timer wraps
2661 Details : Using a 32-bit jiffies timer with HZ=1000 may cause backup
2662 import connections to be ignored if the 32-bit jiffies counter
2663 wraps. Use a 64-bit jiffies counter.
2666 Frequency : very large clusters immediately after boot
2668 Description: LNET request buffers exhausted under heavy short-term load
2669 Details : If a large number of client requests are generated on a service
2670 that has previously never seen so many requests it is possible
2671 that the request buffer growth cannot keep up with the spike in
2672 demand. Instead of dropping incoming requests, they are held in
2673 the LND until the RPC service can accept more requests.
2676 Frequency : Sometimes during replay
2678 Description: Assertion failure in ll_local_open after replay.
2679 Details : If replay happened on an open request reply before we were able
2680 to set replay handler, reply will become not swabbed tripping the
2681 assertion in ll_local_open. Now we set the handler right after
2682 recognising of open request
2685 Frequency : very rare
2687 Description: kernel reports "badness in vsnprintf"
2688 Details : Reading from the "recovery_status" /proc file in small chunks
2689 may cause a negative length in lprocfs_obd_rd_recovery_status()
2690 call to vsnprintf() (which is otherwise harmless). Exit early
2691 if there is no more space in the output buffer.
2693 Severity : enhancement
2695 Description: clear OBD RPC statistics by writing to them
2696 Details : It is now possible to clear the OBD RPC statistics by writing
2697 to the "stats" file.
2702 Description: Client mtime is not the same on different clients after utimes
2703 Details : In some cases, the client was using the utimes() syscall on
2704 a file cached on another node. The clients now validate the
2705 ctime from the MDS + OSTs to determine which one is right.
2710 Description: Inability to activate failout mode
2711 Details : lconf script incorrectly assumed that in pythong string's numeric
2712 value is used in comparisons.
2715 Frequency : always with multiple stripes per file
2717 Description: Inefficient object allocation for mutli-stripe files
2718 Details : When selecting which OSTs to stripe files over, for files with
2719 a stripe count that divides evenly into the number of OSTs,
2720 the MDS is always picking the same starting OST for each file.
2721 Return the OST selection heuristic to the original design.
2726 Description: mount failures may take full timeout to return an error
2727 Details : Under some heavy load conditions it is possible that a
2728 failed mount can wait for the full obd_timeout interval,
2729 possibly several minutes, before reporting an error.
2730 Instead return an error as soon as the status is known.
2732 Frequency : quota enabled and large files being deleted
2734 Description: releasing more than 4GB of quota at once hangs OST
2735 Details : If a user deletes more than 4GB of files on a single OST it
2736 will cause the OST to spin in an infinite loop. Release
2737 quota in < 4GB chunks, or use a 64-bit value for 1.4.7.1+.
2742 Description: statfs data retrieved from /proc may be stale or zero
2743 Details : When reading per-device statfs data from /proc, in the
2744 {kbytes,files}_{total,free,avail} files, it may appear
2745 as zero or be out of date.
2748 Frequency : systems with MD RAID1 external journal devices
2750 Description: lconf's call to blkid is confused by RAID1 journal devices
2751 Details : Use the "blkid -l" flag to locate the MD RAID device instead
2752 of returning all block devices that match the journal UUID.
2755 Frequency : always, for aggregate stripe size over 4GB
2757 Description: assertion fails when trying to use 4GB stripe size
2758 Details : Use "setstripe" to set stripe size over 4GB will fail the kernel,
2759 complaining "ASSERTION(lsm->lsm_xfersize != 0)"
2762 Frequency : always on ppc64
2764 Description: the first write on an ext3 filesystem with mballoc got stuck
2765 Details : ext3_mb_generate_buddy() uses find_next_bit() which does not
2766 perform endianness conversion.
2768 ------------------------------------------------------------------------------
2770 02-14-2006 Cluster File Systems, Inc. <info@clusterfs.com>
2772 * WIRE PROTOCOL CHANGE. This version of Lustre networking WILL NOT
2773 INTEROPERATE with older versions automatically. Please read the
2774 user documentation before upgrading any part of a live system.
2775 * WARNING: Lustre networking configuration changes are required with
2776 this release. See https://bugzilla.clusterfs.com/show_bug.cgi?id=10052
2779 * Support for kernels:
2780 2.6.9-22.0.2.EL (RHEL 4)
2781 2.6.5-7.244 (SLES 9)
2782 2.6.12.6 vanilla (kernel.org)
2785 Severity : enhancement
2786 Bugzilla : 7981/8208
2787 Description: Introduced Lustre Networking (LNET)
2788 Details : LNET is new networking infrastructure for Lustre, it includes
2789 a reorganized network configuration mode (see the user
2790 documentation for full details) as well as support for routing
2791 between different network fabrics. Lustre Networking Devices
2792 (LNDs) for the supported network fabrics have also been
2793 created for this new infrastructure.
2795 Severity : enhancement
2796 Description: Introduced Access control lists
2797 Details : clients can set ACLs on files and directories in order to have
2798 more fine-grained permissions than the standard Unix UGO+RWX.
2799 The MDS must be started with the "-o acl" mount option.
2801 Severity : enhancement
2802 Description: Introduced filesystem quotas
2803 Details : Administrators may now establish per-user quotas on the
2806 Severity : enhancement
2808 Description: Configuration change for the XT3
2809 The PTLLND is now used to run Lustre over Portals on the XT3
2810 The configure option(s) --with-cray-portals are no longer used.
2811 Rather --with-portals=<path-to-portals-includes> is used to
2812 enable building on the XT3. In addition to enable XT3 specific
2813 features the option --enable-cray-xt3 must be used.
2818 Description: Running on many-way SMP OSTs can trigger oops in llcd_send()
2819 Details : A race between allocating a new llcd and re-getting the llcd_lock
2820 allowed another thread to grab newly-allocated llcd.
2822 Severity : enhancement
2824 Description: 2.6 OST async journal commit and locking fix to improve performance
2825 Details : The filter_direct_io()+filter_commitrw_write() journal commits for
2826 2.6 kernels are now async as they already were in 2.4 kernels so
2827 that they can commit concurrently with the network bulk transfer.
2828 For block-allocated files the filter allocation semaphore is held
2829 to avoid filesystem fragmentation during allocation. BKL lock
2830 removed for 2.6 xattr operations where it is no longer needed.
2835 Description: lconf incorrectly determined whether two IP networks could talk
2836 Details : In some more complicated routing and multiple-network
2837 configurations, lconf will avoid trying to make a network
2838 connection to a disjoint part of the IP space. It was doing the
2839 math incorrectly for one set of cases.
2844 Description: Fix for potential infinite loop processing records in an llog.
2845 Details : If an llog record is corrupted/zeroed, it is possible to loop
2846 forever in llog_process(). Validate the llog record length
2847 and skip the remainder of the block on error.
2850 Frequency : occasional (liblustre only)
2852 Description: liblustre could not open files whose last component is a symlink
2853 Details : sysio_path_walk() would incorrectly pass the open intent to
2854 intermediate path components.
2857 Frequency : rare (liblustre only with non-standard tuning)
2858 Bugzilla : 7201 (7350)
2859 Description: Tuning the MDC DLM LRU size to zero triggers client LASSERT
2860 Details : llu_lookup_finish_locks() tries to set lock data on a lock
2861 after it has been released, only do this for referenced locks
2863 Severity : enhancement
2865 Description: specifying an (invalid) directory default stripe_size of -1
2866 would reset the directory default striping
2867 Details : stripe_size -1 was used internally to signal directory stripe
2868 removal, now use "all default" to signal dir stripe removal
2869 as a directory striping of "all default" is not useful
2872 Frequency : common for large clusters running liblustre clients
2874 Description: doing an ls when liblustre clients are running is slow
2875 Details : sending a glimpse AST to a liblustre client waits for every AST
2876 to time out, as liblustre clients will not respond. Since they
2877 cannot cache data we refresh the OST lock LVB from disk instead.
2879 Severity : enhancement
2881 Description: doing an ls at the same time as file IO can be slow
2882 Details : enqueue and other "small" requests can be blocked behind many
2883 large IO requests. Create a new OST IO portal for non-IO
2884 requests so they can be processed faster.
2887 Frequency : rare (only HPUX clients mounting unsupported re-exported NFS vol)
2889 Description: an HPUX NFS client would get -EACCESS when ftruncate()ing a newly
2890 created file with mode 000
2891 Details : the Linux NFS server relies on an MDS_OPEN_OWNEROVERRIDE hack to
2892 allow an ftruncate() as a non-root user to a file with mode 000.
2893 Lustre now respects this flag to disable mode checks when
2894 truncating a file owned by the user
2897 Frequency : liblustre-only, when liblustre client dies unexpectedly or becomes
2900 Description: Revoking locks from clients that went dead or catatonic might take
2902 Details : New lock flags FL_CANCEL_ON_BLOCK used by liblustre makes
2903 cancellation of such locks instant on servers without waiting for
2904 any reply from clients. Clients drops these locks when cancel
2905 notification from server is received without replying.
2908 Frequency : liblustre-only, when liblustre client dies or becomes busy
2910 Description: Doing ls on Linux clients can take a long time with active
2912 Details : Liblustre client cannot handle ASTs in timely manner, so avoid
2913 granting such locks to it in the first place if possible. Locks
2914 are taken by proxy on the OST during the read or write and
2915 dropped immediately afterward. Add connect flags handling, do
2916 not grant locks to liblustre clients for glimpse ASTs.
2918 Severity : enhancement
2920 Description: Improve read-ahead algorithm to avoid excessive IO for random reads
2921 Details : Existing read-ahead algorithm is tuned for the case of streamlined
2922 sequential reads and behaves badly with applications doing random
2923 reads. Improve it by reading ahead at least read region, and
2924 avoiding excessive large RPC for small reads.
2926 Severity : enhancement
2928 Description: Creating more than 1000 files for a single job may cause a load
2929 imbalance on the OSTs if there are also a large number of OSTs.
2930 Details : qos_prep_create() uses an OST index reseed value that is an
2931 even multiple of the number of available OSTs so that if the
2932 reseed happens in the middle of the object allocation it will
2933 still utilize the OSTs as uniformly as possible.
2938 Description: OST or MDS may oops in ping_evictor_main()
2939 Details : ping_evictor_main() drops obd_dev_lock if deleting a stale export
2940 but doesn't restart at beginning of obd_exports_timed list
2943 Severity : enhancement
2945 Description: improve by-nid export eviction on the MDS and OST
2946 Details : allow multiple exports with the same NID to be evicted at one
2947 time without re-searching the exports list.
2950 Frequency : rare, only with supplementary groups enabled on SMP 2.6 kernels
2952 Description: MDS may oops in groups_free()
2953 Details : in rare race conditions a newly allocated group_info struct is
2954 freed again, and this can be NULL. The 2.4 compatibility code
2955 for groups_free() checked for a NULL pointer, but 2.6 did not.
2958 Frequency : common for liblustre clients doing little filesystem IO
2959 Bugzilla : 9352, 7313
2960 Description: server may evict liblustre clients accessing contended locks
2961 Details : if a client is granted a lock or receives a completion AST
2962 with a blocking AST already set it would not reply to the AST
2963 for LDLM_FL_CANCEL_ON_BLOCK locks. It now replies to such ASTs.
2966 Frequency : lfs setstripe, only systems with more than 160 OSTs
2968 Description: unable to set striping with a starting offset beyond OST 160
2969 Details : llapi_create_file() incorrectly limited the starting stripe
2970 index to the maximum single-file stripe count.
2973 Frequency : LDAP users only
2975 Description: lconf did not handle in-kernel recovery with LDAP properly
2976 Details : lconf/LustreDB get_refs() is searching the wrong namespace
2978 Severity : enhancement
2980 Description: bind OST threads to NUMA nodes to improve performance
2981 Details : all OST threads are uniformly bound to CPUs on a single NUMA
2982 node and do their allocations there to localize memory access
2984 Severity : enhancement
2986 Description: llmount can determine client NID directly from Myrinet (GM)
2987 Details : the client NID code from gmnalnid was moved directly into
2988 llmount, removing the need to use this or specifying the
2989 client NID explicitly when mounting GM clients with zeroconf
2992 Frequency : if client is started with down MDS
2994 Description: if client is started with down MDS mount hangs in ptlrpc_queue_wait
2995 Details : Having an LWI_INTR() wait event (interruptible, but no timeout)
2996 will wait indefinitely in ptlrpc_queue_wait->l_wait_event() after
2997 ptlrpc_import_delayed_req() because we didn't check if the
2998 request was interrupted, and we also didn't break out of the
2999 event loop if there was no timeout
3004 Description: data loss during non-page-aligned writes to a single file from
3005 both multiple nodes and multiple threads on one node at same time
3006 Details : updates to KMS and lsm weren't protected by common lock. Resulting
3007 inconsistency led to false short-reads, that were cached and later
3008 used by ->prepare_write() to fill in partially written page,
3009 leading to data loss.
3012 Frequency : always, if lconf --abort_recovery used
3014 Description: lconf --abort_recovery fails with 'Operation not supported'
3015 Details : lconf was attempting to abort recovery on the MDT device and not
3018 Severity : enhancement
3020 Description: remove cleanup logs
3021 Details : replace lconf-generated cleanup logs with lustre internal
3022 cleanup routines. Eliminates the need for client-cleanup and
3025 Severity : enhancement
3027 Description: add support for EAs (user and system) on lustre filesystems
3028 Details : it is now possible to store extended attributes in the Lustre
3029 client filesystem, and with the user_xattr mount option it
3030 is possible to allow users to store EAs on their files also
3032 Severity : enhancement
3034 Description: Add possibility (config option) to show minimal available OST free
3036 Details : When compiled with --enable-mindf configure option, statfs(2)
3037 (and so, df) will return least minimal free space available from
3038 all OSTs as amount of free space on FS, instead of summary of
3039 free spaces of all OSTs.
3041 Severity : enhancement
3043 Description: do not expand extent locks acquired on OST-side
3044 Details : Modify ldlm_extent_policy() to not expand local locks, acquired
3045 by server: they are not cached anyway.
3048 Frequency : when mmap is used/binaries executed from Lustre
3050 Description: Unmmap pages before throwing them away from read cache.
3051 Details : llap_shrink cache now attempts to unmap pages before discarding
3052 them (if unmapping failed - do not discard). SLES9 kernel has
3053 extra checks that trigger if this unmapping is not done first.
3058 Description: lconf didn't resolve symlinks before checking to see whether a
3059 given mountpoint was already in use
3062 Frequency : when migrating failover services
3063 Bugzilla : 6395, 9514
3064 Description: When migrating a subset of services from a node (e.g. failback
3065 from a failover service node) the remaining services would
3066 time out and evict clients.
3067 Details : lconf --force (implied by --failover) sets the global obd_timeout
3068 to 5 seconds in order to quickly disconnect, but this caused
3069 other RPCs to time out too quickly. Do not change the global
3070 obd_timeout for force cleanup, only set it for DISCONNECT RPCs.
3072 Severity : enhancement
3073 Frequency : if MDS is started with down OST
3074 Bugzilla : 9439,5706
3075 Description: Allow startup/shutdown of an MDS without depending on the
3076 availability of the OSTs.
3077 Details : Asynchronously call mds_lov_synchronize during MDS startup.
3078 Add appropriate locking and lov-osc refcounts for safe
3079 cleaning. Add osc abort_inflight calls in case the
3080 synchronize never started.
3083 Frequency : occasional (Cray XT3 only)
3085 Description: root not authorized to access files in CRAY_PORTALS environment
3086 Details : The client process capabilities were not honoured on the MDS in
3087 a CRAY_PORTALS/CRAY_XT3 environment. If the file had previously
3088 been accessed by an authorized user then root was able to access
3089 the file on the local client also. The root user capabilities
3090 are now allowed on the MDS, as this environment has secure UID.
3093 Frequency : occasional
3095 Description: ldiskfs "too long searching" message happens too often
3096 Details : A debugging message (otherwise harmless) prints too often on
3097 the OST console. This has been reduced to only happen when
3098 there are fragmentation problems on the filesystem.
3103 Description: Division by zero in statfs when all OSCs are inactive
3104 Details : lov_get_stripecnt() returns zero due to incorrect order of checks,
3105 lov_statfs divides by value returned by lov_get_stripecnt().
3109 Bugzilla : 9489, 3273
3110 Description: First write from each client to each OST was only 4kB in size,
3111 to initialize client writeback cache, which caused sub-optimal
3112 RPCs and poor layout on disk for the first writen file.
3113 Details : Clients now request an initial cache grant at (re)connect time
3114 and so that they can start streaming writes to the cache right
3115 away and always do full-sized RPCs if there is enough data.
3116 If the OST is rebooted the client also re-establishes its grant
3117 so that client cached writes will be honoured under the grant.
3122 Description: Slow ls (and stat(2) syscall) on files residing on IO-loaded OSTs
3123 Details : Now I/O RPCs go to different portal number and (presumably) fast
3124 lock requests (and glimses) and other RPCs get their own service
3125 threads pool that should be able to service those RPCs
3128 Severity : enhancement
3130 Description: Ability to exchange lustre version between client and servers and
3131 issue warnings at client side if client is too old. Also for
3132 liblustre clients there is ability to refuse connection of too old
3134 Details : New 'version' field is added to connect data structure that is
3135 filled with version info. That info is later checked by server and
3139 Frequency : rare, liblustre only.
3140 Bugzilla : 9296, 9581
3141 Description: Two simultaneous writes from liblustre at offset within same page
3142 might proceed at the same time overwriting eachother with stale
3144 Details : I/O lock withing llu_file_prwv was released too early, before data
3145 actually was hitting the wire. Extended lock-holding time until
3146 server acknowledges receiving data.
3149 Frequency : extremely rare. Never observed in practice.
3151 Description: avoid generating lustre_handle cookie of 0.
3152 Details : class_handle_hash() generates handle cookies by incrementing
3153 global counter, and can hit 0 occasionaly (this is unlikely, but
3154 not impossible, because initial value of cookie counter is
3155 selected randonly). Value of 0 is used as a sentinel meaning
3156 "unassigned handle" --- avoid it. Also coalesce two critical
3157 sections in this function into one.
3159 Severity : enhancement
3161 Description: allow liblustre clients to delegate truncate locking to OST
3162 Details : To avoid overhead of locking, liblustre client instructs OST to
3163 take extent lock in ost_punch() on client's behalf. New connection
3164 flag is added to handle backward compatibility.
3166 Severity : enhancement
3167 Bugzilla : 4928, 7341, 9758
3168 Description: allow number of OST service threads to be specified
3169 Details : a module parameter allows the number of OST service threads
3170 to be specified via "options ost ost_num_threads={N}" in the
3171 OSS's /etc/modules.conf or /etc/modprobe.conf.
3175 Bugzilla : 6146, 9635, 9895
3176 Description: servers crash with bad pointer in target_handle_connect()
3177 Details : In rare cases when a client is reconnecting it was possible that
3178 the connection request was the last reference for that export.
3179 We would temporarily drop the export reference and get a new
3180 one, but this may have been the last reference and the export
3181 was just destroyed. Get new reference before dropping old one.
3183 Severity : enhancement
3184 Frequency : if client is started with failover MDS
3186 Description: Allow multiple MDS hostnames in the mount command
3187 Details : Try to read the configuration from all specified MDS
3188 hostnames during a client mount in case the "primary"
3191 Severity : enhancement
3193 Description: Stop sending data to evicted clients as soon as possible.
3194 Details : Check if the client we are about to send or are sending data to
3195 was evicted already. (Check is done every second of waiting,
3196 for which l_wait_event interface was extended to allow checking
3197 of exit condition at specified intervals).
3200 Frequency : rare, normally only when NFS exporting is done from client
3202 Description: 'bad disk LOV MAGIC: 0x00000000' error when chown'ing files
3204 Details : Make mds_get_md() recognise empty md case and set lmm size to 0.
3207 Frequency : always, if srand() is called before liblustre initialization
3209 Description: Liblustre uses system PRNG disturbing its usage by user application
3210 Details : Introduce internal to lustre fast and high-quality PRNG for
3211 lustre usage and make liblustre and some other places in generic
3212 lustre code to use it.
3214 Severity : enhancement
3215 Bugzilla : 9477, 9557, 9870
3216 Description: Verify that the MDS configuration logs are updated when xml is
3217 Details : Check if the .xml configuration logs are newer than the config
3218 logs stored on the MDS and report an error if this is the case.
3219 Request --write-conf, or allow starting with --old_conf.
3221 Severity : enhancement
3223 Description: Handle symlinks in the path when checking if Lustre is mounted.
3224 Details : Resolve intermediate symlinks when checking if a client has
3225 mounted a filesystem to avoid duplicate client mounts.
3230 Description: lconf can hit an error exception but still return success.
3231 Details : The lconf command catches the Command error exception at the top
3232 level script context and will exit with the associated exit
3233 status, but doesn't ensure that this exit status is non-zero.
3238 Description: failure of ptlrpc thread startup can cause oops
3239 Details : Starting a ptlrpc service thread can fail if there are a large
3240 number of threads or the server memory is very fragmented.
3241 Handle this without oopsing.
3244 Frequency : always, only if liblustre and non-default acceptor port was used
3246 Description: liblustre cannot connect to servers with non-default acceptor port
3247 Details : tcpnal_set_default_params() was not called and was therefore
3248 ignoring the environment varaible TCPNAL_PORT, as well as other
3249 TCPNAL_ environment variables
3254 Description: two objects could be created on the same OST for a single file
3255 Details : If an OST is down, in some cases it was possible to create two
3256 objects on a single OST for a single file. No problems other
3257 than potential performance impact and spurious error messages.
3261 Bugzilla : 5681, 9562
3262 Description: Client may oops in ll_unhash_aliases
3263 Details : Client dcache may become inconsistent in race condition.
3264 In some cases "getcwd" can fail if the current directory is
3270 Description: Inode refcounting problems in NFS export code
3271 Details : link_raw functions used to call d_instantiate without obtaining
3272 extra inode reference first.
3276 Bugzilla : 9942, 9903
3277 Description: Referencing freed requests leading to crash, memleaks with NFS.
3278 Details : We used to require that call to ll_revalidate_it was always
3279 followed by ll_lookup_it. Also with revalidate_special() it is
3280 possible to call ll_revalidate_it() twice for the same dentry
3281 even if first occurence returned success. This fix changes semantic
3282 between DISP_ENQ_COMPLETE disposition flag to mean there is extra
3283 reference on a request referred from the intent.
3284 ll_intent_release() then releases such a request.
3287 Frequency : rare, normally benchmark loads only
3289 Description: unlinked inodes were kept in memory on the client
3290 Details : If a client is repeatedly creating and unlinking files it
3291 can accumulate a lot of stale inodes in the inode slab cache.
3292 If there is no other client load running this can cause the
3293 client node to run out of memory. Instead flush old inodes
3294 from client cache that have the same inode number as a new inode.
3297 Frequency : SLES9 2.6.5 kernel and long filenames only
3298 Bugzilla : 9969, 10379
3299 Description: utime reports stale NFS file handle
3300 Details : SLES9 uses out-of-dentry names in some cases, which confused
3301 the lustre dentry revalidation. Change it to always use the
3305 Frequency : rare, unless heavy write-truncate concurrency is continuous
3306 Bugzilla : 4180, 6984, 7171, 9963, 9331
3307 Description: OST becomes very slow and/or deadlocked during object unlink
3308 Details : filter_destroy() was holding onto the parent directory lock
3309 while truncating+unlinking objects. For very large objects this
3310 may block other threads for a long time and slow overall OST
3311 responsiveness. It may also be possible to get a lock ordering
3312 deadlock in this case, or run out of journal credits because of
3313 the combined truncate+unlink. Solution is to do object truncate
3314 first in one transaction without parent lock, and then do the
3315 final unlink in a new transaction with the parent lock. This
3316 reduces the lock hold time dramatically.
3319 Frequency : rare, 2.4 kernels only
3321 Description: MDS or OST cleanup may trip kernel BUG when dropping kernel lock
3322 Details : mds_cleanup() and filter_cleanup() need to drop the kernel lock
3323 before unmounting their filesystem in order to avoid deadlock.
3324 The kernel_locked() function in 2.4 kernels only checks whether
3325 the kernel lock is held, not whether it is this process that is
3326 holding it as 2.6 kernels do.
3331 Description: MDS or OST may oops/LBUG if a client is connecting multiple times
3332 Details : The client ptlrpc code may be trying to reconnect to a down
3333 server before a previous connection attempt has timed out.
3334 Increase the reconnect interval to be longer than the connection
3335 timeout interval to avoid sending duplicate connections to
3339 Frequency : echo_client brw_test command
3341 Description: fix echo_client to work with OST preallocated code
3342 Details : OST preallocation code (5137) didn't take echo_client IO path
3343 into account: echo_client calls filter methods outside of any
3344 OST thread and, hence, there is no per-thread preallocated
3345 pages and buffers to use. Solution: hijack pga pages for IO. As
3346 a byproduct, this avoids unnecessary data copying.
3350 Bugzilla : 3555, 5962, 6025, 6155, 6296, 9574
3351 Description: Client can oops in mdc_commit_close() after open replay
3352 Details : It was possible for the MDS to return an open request with no
3353 transaction number in mds_finish_transno() if the client was
3354 evicted, but without actually returning an error. Clients
3355 would later try to replay that open and may trip an assertion
3356 Simplify the client close codepath, and always return an error
3357 from the MDS in case the open is not successful.
3360 Frequency : rare, 2.6 OSTs only
3362 Description: OST may deadlock under high load on fragmented files
3363 Details : If there was a heavy load and highly-fragmented OST filesystems
3364 it was possible to have all the OST threads deadlock waiting on
3365 allocation of biovecs, because the biovecs were not released
3366 until the entire RPC IO was completed. Instead, release biovecs
3367 as soon as they are complete to ensure forward IO progress.
3369 Severity : enhancement
3371 Description: Support for specifying external journal device at mount
3372 Details : If an OST or MDS device is formatted with an external journal
3373 device, this device major/minor is stored in the ext3 superblock
3374 and may not be valid for failover. Allow detecting and
3375 specifying the external journal at mount time.
3380 Description: Mounting an MDS with pending unlinked files may cause oops
3381 Details : target_finish_recovery() calls mds_postrecov() which returned
3382 the number of orphans unlinked. mds_lov_connect->mds_postsetup()
3383 considers this an error and immediately begins cleaning up the
3384 lov, just after starting the mds_lov process
3386 Severity : enhancement
3388 Description: Implement 'lfs df' to report actual free space on per-OST basis
3389 Details : Add sub-command 'df' on 'lfs' to report the disk space usage of
3390 MDS/OSDs. Usage: lfs df [-i][-h]. Command Options: '-i' to report
3391 usage of objects; '-h' to report in human readable format.
3393 ------------------------------------------------------------------------------
3395 08-26-2005 Cluster File Systems, Inc. <info@clusterfs.com>
3402 Description: Mounting an ldiskfs file system with mballoc may crash OST node.
3403 Details : ldiskfs mballoc code may reference an uninitialized buddy struct
3404 at startup during orphan unlinking. Instead, skip buddy update
3405 before setup, as it will be regenerated after recovery is complete.
3410 Description: If an OST is inactive, its locks might reference stale inodes.
3411 Details : lov_change_cbdata() must iterate over all namespaces, even if
3412 they are inactive to clear inode references from the lock.
3414 Severity : enhancement
3415 Frequency : occasional, if non-standard max_dirty_mb used
3417 Description: Client will block write RPCs if not enough grant
3418 Details : If a client has max_dirty_mb smaller than max_rpcs_in_flight,
3419 then the client will block writes while waiting for another RPC
3420 to complete instead of consuming its dirty limit. With change
3421 we get improved performance when max_dirty_mb is small.
3423 Severity : enhancement
3424 Bugzilla : 3389, 6253
3425 Description: Add support for supplementary groups on the MDS.
3426 Details : The MDS has an upcall /proc/fs/lustre/mds/{mds}/group_upcall
3427 (set to /usr/sbin/l_getgroups if enabled) which will do MDS-side
3428 lookups for user supplementary groups into a cache.
3432 Description: O_CREAT|O_EXCL open flags in liblustre always return -EEXIST
3433 Details : Make libsysio to not enforce O_EXCL by clearing the flag,
3434 for liblustre O_EXCL is enforced by MDS.
3438 Description: readdir never returns NULL in liblustre.
3439 Details : Corrected llu_iop_getdirentries logic, to return offset of next
3440 dentry in struct dirent.
3444 Frequency : liblustre only, depends on application IO pattern
3445 Description: liblustre clients evicted if not contacting servers
3446 Details : Don't put liblustre clients into the ping_evictor list, so
3447 they will not be evicted by the pinger ever.
3449 Severity : enhancement
3451 Description: Add ability to evict clients by NID from MDS.
3452 Details : By echoing "nid:$NID" string into
3453 /proc/fs/lustre/mds/.../evict_client client with nid that equals to
3454 $NID would be instantly evicted from this MDS and from all active
3455 OSTs connected to it.
3459 Description: Do not query file size twice, somewhat slowing stat(2) calls.
3460 Details : lookup_it_finish() used to query file size from OSTs that was not
3465 Description: service threads change working directory to that of init
3466 Details : Starting lustre service threads may pin the working directory
3467 of the parent thread, making that filesystem busy. Threads
3468 now change to the working directory of init to avoid this.
3472 Frequency : during shutdown only
3473 Description: shutdown with a failed MDS or OST can cause unmount to hang
3474 Details : Don't resend DISCONNECT messages in ptlrpc_disconnect_import()
3479 Frequency : 2.6 only
3480 Description: chmod/chown may include an extra supplementary group
3481 Details : ll{,u}_mdc_pack_op_data() does not properly initialize the
3482 supplementary group and if none is specified this is used.
3485 Bugzilla : 5479 (6816)
3487 Description: Racing open + rm can assert client in mdc_set_open_replay_data()
3488 Details : If lookup is in progress on a file that is unlinked we might try
3489 to revalidate the inode and fail in revalidate after lookup is
3490 complete and ll_file_open() enqueues the open again but
3491 it_open_error() was not checking DISP_OPEN_OPEN errors correctly.
3494 Frequency : always, if lconf --abort_recovery used
3496 Description: lconf --abort_recovery fails with 'Operation not supported'
3497 Details : lconf was attempting to abort recovery on the MDT device and not
3500 ------------------------------------------------------------------------------
3502 2005-08-08 Cluster File Systems, Inc. <info@clusterfs.com>
3507 Frequency : rare (only unsupported configurations with a node running as an
3509 Bugzilla : 6514, 5137
3510 Description: Mounting a Lustre file system on a node running as an OST could
3512 Details : OSTs now preallocates memory needed to write out data at
3513 startup, instead of when needed, to avoid having to
3514 allocate memory in possibly low memory situations.
3515 Specifically, if the file system is mounted on on OST,
3516 memory pressure could force it to try to write out data,
3517 which it needed to allocate memory to do. Due to the low
3518 memory, it would be unable to do so and the node would
3519 become unresponsive.
3521 Severity : enhancement
3523 Description: Addition of lconf --service command line option
3524 Details : lconf now accepts a '--service <arg>' option, which is
3525 shorthand for 'lconf --group <arg> --select <arg>=<hostname>'
3527 Severity : enhancement
3529 Description: Failover mode is now the default for OSTs.
3530 Details : By default, OSTs will now run in failover mode. To return to
3531 the old behaviour, add '--failout' to the lmc line for OSTs.
3533 Severity : enhancement
3535 Description: Health checks are now provided for MDS and OSTs
3536 Details : Additional detailed health check information on MSD and OSTs
3537 is now provided through the procfs health_check value.
3540 Frequency : occasional, depends on IO load
3542 Description: Disk fragmentation on the OSTs could eventually cause slowdowns
3543 after numerous create/delete cycles
3544 Details : The ext3 inode allocation policy would not allocate new inodes
3545 very well on the OSTs because there are no new directories
3546 being created. Instead we look for groups with free space if
3547 the parent directories are nearly full.
3552 Description: Network or server problems during mount may cause partially
3553 mounted clients instead of returning an error.
3554 Details : The config llog parsing code may overwrite the error return
3555 code during mount error handling, returning success instead
3561 Description: MDS can fail to allocate large reply buffers
3562 Details : After long uptimes the MDS can fail to allocate large reply
3563 buffers (e.g. zconf client mount config records) due to memory
3564 fragmentation or consumption by the buffer cache. Preallocate
3565 some large reply buffers so that these replies can be sent even
3566 under memory pressure.
3570 Frequency : rare (liblustre)
3571 Description: fsx running with liblustre complained that using truncate() to
3572 extend the file doesn't work. This patch corrects that issue.
3573 Details : This is the liblustre equivalent of the fix for bug 6196. Fixes
3574 ATTR_SIZE and lsm use in llu_setattr_raw.
3578 Frequency : rare, only 2.6 kernels
3579 Description: Unusual file access patterns on the MDS may result in inode
3580 data being lost in very rare circumstances.
3581 Details : Bad interaction between the ea-in-inode patch and the "no-read"
3582 code in the 2.6 kernel caused the inode and/or EA data not to
3583 be read from disk, causing single-file corruption.
3587 Frequency : rare, only 2.6 filesystems using extents
3588 Description: Heavy concurrent write and delete load may cause data corruption.
3589 Details : It was possible under high-load situations to have an extent
3590 metadata block in the block device cache from a just-unlinked
3591 file overwrite a newly-allocated data block. We now unmap any
3592 metadata buffers that alias just-allocated data blocks.
3596 Frequency : filesystems with default stripe_count larger than 77
3597 Description: lconf+mke2fs fail when formatting filesystem with > 77 stripes
3598 Details : lconf specifies an inode size of 4096 bytes when the default
3599 stripe_count is larger than 77. This conflicts with the default
3600 inode density of 1 per 4096 bytes. Allocate smaller inodes in
3601 this case to avoid pinning too much memory for large EAs.
3603 ------------------------------------------------------------------------------
3605 2005-07-07 Cluster File Systems, Inc. <info@clusterfs.com>
3610 Frequency : rare (extremely heavy IO load with hundreds of clients)
3612 Description: Client is evicted, gets IO error writing to file
3613 Details : lock ordering changes for bug 5492 reintroduced bug 3267 and
3614 caused clients to be evicted for AST timeouts. The fixes in
3615 bug 5192 mean we no longer need to have such short AST timeouts
3616 so ldlm_timeout has been increased.
3619 Frequency : occasional during --force or --failover shutdown under load
3620 Bugzilla : 5949, 4834
3621 Description: Server oops/LBUG if stopped with --force or --failover under load
3622 Details : a collection of import/export refcount and cleanup ordering
3623 issues fixed for safer force cleanup
3626 Frequency : only filesystems larger than 120 OSTs
3627 Bugzilla : 5990, 6223
3628 Description: lfs getstripe would oops on a very large filesystem
3629 Details : lov_getconfig used kfree on vmalloc'd memory
3632 Frequency : only filesystems exporting via NFS to Solaris 10 clients
3633 Bugzilla : 6242, 6243
3634 Description: reading from files that had been truncated to a non-zero size
3635 but never opened returned no data
3636 Details : ll_file_read() reads zeros from no-object files to EOF
3641 Description: A bug in MDS/OSS recovery could cause the OSS to fail an assertion
3642 Details : There's little harm in aborting MDS/OSS recovery and letting it
3643 try again, so I removed the LASSERT and return an error instead.
3645 Severity : enhancement
3647 Description: New debugging infrastructure for tracking down data corruption
3648 Details : The I/O checksum code was replaced to: (a) control it at runtime,
3649 (b) cover more of the client-side code path, and (c) try to narrow
3650 down where problems occurred
3654 Bugzilla : 3819, 4364, 4397, 6313
3655 Description: Racing close and eviction MDS could cause assertion in mds_close
3656 Details : It was possible to get multiple mfd references during close and
3657 client eviction, leading to one thread referencing a freed mfd.
3659 Severity: : enhancement
3660 Bugzilla : 3262, 6359
3661 Description: Attempts to reconnect to servers are now more aggressive.
3662 Details : This builds on the enhanced upcall-less recovery that was added
3663 in 1.4.2. When trying to reconnect to servers, clients will
3664 now try each server in the failover group every 10 seconds. By
3665 default, clients would previously try one server every 25 seconds.
3670 Description: After recovery, certain operations trigger a failed
3671 assertion on a client.
3672 Details : Failing over an mds, using lconf -d --failover, while a
3673 client was doing a readdir() call would cause the client to
3674 LBUG after recovery completed and the readdir() was resent.
3676 Severity : enhancement
3678 Description: Default groups are now added by lconf
3679 Details : You can now run lconf --group <servicename> without having to
3680 manually add groups with lmc.
3683 Frequency : occasional
3685 Description: Nodes with an elan id of 0 trigger a failed assertion
3688 Frequency : always when accessing e.g. tty/console device nodes
3690 Description: tty and some other devices nodes cannot be used on lustre
3691 Details : file's private_data field is used by device data and lustre
3692 values in there got lost. New field was added to struct file to
3693 store fs-specific private data.
3696 Frequency : when exporting Lustre via NFS
3698 Description: NFSD failed occasionally when looking up a path component
3699 Details : NFSD is looking up ".." which was broken in ext3 directories
3700 that had grown large enough to become hashed.
3703 Frequency : Clusters with multiple interfaces not on the same subnet
3705 Description: Nodes will repeatedly try to reconnect to an interface which it
3706 cannot reach and report an error to the log.
3707 Details : Extra peer list entries will be created by lconf with some peers
3708 unreachable. lconf now validates the peer before adding it.
3711 Frequency : Only if a default stripe is set on the filesystem root.
3713 Description: Setting a default stripe on the filesystem root prevented the
3714 filesystem from being remounted.
3715 Details : The client was sending extra request flags in the root getattr
3716 request and did not allocate a reply buffer for the dir EA.
3719 Frequency : occasional, higher if lots of files are accessed by one client
3720 Bugzilla : 6159, 6097
3721 Description: Client trips assertion regarding lsm mismatch/magic
3722 Details : While revalidating inodes the VFS looks up inodes with ifind()
3723 and in rare cases can find an inode that is being freed.
3724 The ll_test_inode() code will free the lsm during ifind()
3725 when it finds an existing inode and then the VFS later attaches
3726 this free lsm to a new inode.
3730 Bugzilla : 6422, 7030
3731 Description: MDS deadlock between mkdir and client eviction
3732 Details : Creating a new file via mkdir or mknod (starting a transaction
3733 and getting the ns lock) can deadlock with client eviction
3734 (gets ns lock and trying to finish a synchronous transaction).
3737 Frequency : occasional
3738 Description: While starting a server, the fsfilt_ext3 module could not be
3740 Details : CFS's improved ext3 filesystem is named ldiskfs for 2.6
3741 kernels. Previously, lconf would still use the ext3 name
3742 when trying to load modules. Now, it will correctly use
3743 ext3 on 2.4 and ldiskfs on 2.6.
3745 Severity : enhancement
3746 Description: The default stripe count has been changed to 1
3747 Details : The interpretation of the default stripe count (0, to lfs
3748 or lmc) has been changed to mean striping across a single
3749 OST, rather than all available. For general usage we have
3750 found a stripe count of 1 or 2 works best.
3752 Severity : enhancement
3753 Description: Add support for compiling against Cray portals.
3754 Details : Conditional compiling for some areas that are different
3758 Frequency : occasional
3759 Bugzilla : 6409, 6834
3760 Description: Creating files with an explicit stripe count may lead to
3761 a failed assertion on the MDS
3762 Details : If some OSTs are full or unavailable, creating files may
3763 trigger a failed assertion on the MDS. Now, Lustre will
3764 try to use other servers or return an error to the
3768 Frequency : occasional
3770 Description: Multiple concurrent overlapping read+write on multiple SMP nodes
3771 caused lock timeout during readahead (since 1.4.2).
3772 Details : Processes doing readahead might match a lock that hasn't been
3773 granted yet if there are overlapping and conflicting lock
3774 requests. The readahead process waits on ungranted lock
3775 (original lock is CBPENDING), while OST waits for that process
3776 to cancel CBPENDING read lock and eventually evicts client.
3778 Severity : enhancement
3780 Description: Initial enabling of flock support for clients
3781 Details : Implements fcntl advisory locking and file status functions.
3782 This feature is provided as an optional mount flag (default
3783 off), and is NOT CURRENTLY SUPPORTED. Not all types of record
3784 locking are implemented yet, and those that are are not guaranteed
3785 to be completely correct in production environments.
3786 mount -t lustre -o [flock|noflock] ...
3789 Frequency : occasional
3791 Description: OSTs running 2.4 kernels but with extents enabled might trip an
3792 assertion in the ext3 JBD (journaling) layer.
3793 Details : The b_committed_data struct is protected by the big kernel lock
3794 in 2.4 kernels, serializing journal_commit_transaction() and
3795 ext3_get_block_handle->ext3_new_block->find_next_usable_block()
3796 access to this struct. In 2.6 kernels there is finer grained
3797 locking to improve SMP performance of the JBD layer.
3801 Description: Changes the "SCSI I/O Stats" kernel patch to default to "enabled"
3806 Description: merge and cleanup kernel patches.
3809 -----------------------------------------------------------------------------
3811 2005-05-05 Cluster File Systems, Inc. <info@clusterfs.com>
3813 NOTE: Lustre 1.4.2 uses an incompatible network protocol than previous
3814 versions of Lustre. Please update all servers and clients to
3815 version 1.4.2 or later at the same time. You must also run
3816 "lconf --write-conf {config}.xml" on the MDS while it is stopped
3817 to update the configuration logs.
3819 - fix for HPUX NFS client breakage when NFS exporting Lustre (5781)
3820 - mdc_enqueue does not need max_mds_easize request buffer on send (5707)
3821 - swab llog records of type '0' so we get proper header size/idx (5861)
3822 - send llog cancel req to DLM cancel portal instead of cb portal (5515)
3823 - fix rename of one directory over another leaking an inode (5953)
3824 - avoid SetPageDirty on 2.6 (5981)
3825 - don't re-add just-being-destroyed locks to the waiting list (5653)
3826 - when creating new directories, inherit the parent's custom
3827 striping settings if present parent (3048)
3828 - flush buffers from cache before direct IO in 2.6 obdfilter (4982)
3829 - don't hold i_size_sem in ll_nopage() and ll_ap_refresh_count (6077)
3830 - don't hold client locks on temporary worklist from l_lru (5666)
3831 - handle IO errors in 2.6 obdfilter bio completion routine (6046)
3832 - automatically evict dead clients (5921)
3833 - Update file size properly in create+truncate+fstat case (6196)
3834 - Do not unhash mountpoint dentries, do not allow removal of
3836 - Avoid lock ordering deadlock issue with write/truncate (6203,5654)
3837 - reserve enough journal credits in fsfilt_start_log for setattr (4554)
3838 - ldlm_enqueue freed-export error path would always LBUG (6149,6184)
3839 - don't reference lr_lvb_data until after we hold lr_lvb_sem (6170)
3840 - don't overwrite last_rcvd if there is a *_client_add() error (6086)
3841 - Correctly handle reads of files with no objects (6243)
3842 - lctl recover will also mark a device active if deactivate used (5933)
3844 - by default create 1 inode per 4kB space on MDS, per 16kB on OSTs
3845 - allow --write-conf on an MDS with different nettype than client (5619)
3846 - don't write config llogs to MDS for mounts not from that MDS (5617)
3847 - lconf should create multiple TCP connections from a client (5201)
3848 - init scripts are now turned off by default; run chkconfig --on
3849 lustre and chkconfig --on lustrefs to use them
3850 - upcalls are no longer needed for clients to recover to failover
3852 - add --abort-recovery option to lconf to abort recovery on device
3854 - add support for an arbitrary number of OSTs (3026)
3855 - Quota support protocol changes.
3856 - forward compatibility changes to wire structs (6007)
3857 - rmmod NALs that might be loaded because of /etc/modules.conf (6133)
3858 - support for mountfsoptions and clientoptions to the Lustre LDAP (5873)
3859 - improved "lustre status" script
3860 - initialize blocksize for non-regular files (6062)
3861 - added --disable-server and --disable-client configure options (5782)
3862 - introduce a lookup cache for lconf to avoid repeated DB scans (6204)
3863 - Vanilla 2.4.29 support
3864 - increase maximum number of obd devices to 520 (6242)
3865 - remove the tcp-zero-copy patch from the suse-2.4 series (5902)
3866 - Quadrics Elan drivers are now included for the RHEL 3 2.4.21 and
3867 SLES 9 2.6.5 kernels
3868 - limit stripes per file to 160 (the maximum EA size) (6093)
3870 2005-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
3873 - don't LASSERT in ll_release on NULL lld with NFS export (4655, 5760)
3874 - hold NS lock when calling handle_ast_error->del_waiting_lock (5746)
3875 - fix setattr mtime regression from lovcleanup merge (4829, 5669)
3876 - workaround for 2.6 crash in ll_unhash_aliases (5687, 5210)
3877 - small ext3 extents cleanups and fixes (5733)
3878 - improved mballoc code, several small races and bugs fixed (5733, 5638)
3879 - kernel version 43 - fix remove_suid bugs in both 2.4 and 2.6 (5695)
3880 - avoid needless client->OST connect, fix handle mismatch (5317)
3881 - fix DLM error path that led to out-of-sync client, long delays (5779)
3882 - support common vfs-enforced mount options (nodev,nosuid,noexec) (5637)
3883 - fix several locking issues related to i_size (5492,5624,5654,5672)
3884 - don't move pending lock onto export if it is already evicted (5683)
3885 - fix kernel oops when creating .foo in unlinked directory (5548)
3886 - fix deadlock in obdfilter statistics vs. object create (5811)
3887 - use time_{before,after} to avoid timer jiffies wrap (5882)
3888 - shutdown --force/--failover stability (3607,3651,4797,5203,4834)
3889 - Do not leak request if server was not able to process it (5154)
3890 - If mds_open unable to find parent dir, make that negative lookup(5154)
3891 - don't create new directories with extent-mapping (5909, 5936)
3893 - fix lustre/lustrefs init scripts for SuSE (patch from Scali, 5702)
3894 - don't hold the pinger_sem in ptlrpc_pinger_sending_on_import
3895 - change obd_increase_kms to obd_adjust_kms (up or down) (5654)
3896 - lconf, lmc search both /usr/lib and /usr/lib64 for Python libs (5800)
3897 - support for RHEL4 kernel on i686 (5773)
3898 - provide error messages when incompatible logs are encountered (5898)
3900 2005-02-18 Cluster File Systems, Inc. <info@clusterfs.com>
3901 * version 1.4.0.10 (1.4.1 release candidate 1)
3903 - don't keep a lock reference when lock is not granted (4238)
3904 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3905 - add per-fs limit of Lustre pages in page cache, avoid OOM (4699)
3906 - drop import inflight refcount on signal_completed_replay error (5255)
3907 - unlock page after async write error during send (3677)
3908 - handle missing objects in filter_preprw_read properly (5265)
3909 - no transno return for symlink open, don't save no-trasno open (3440)
3910 - don't try to complete elan receive that already failed (4012)
3911 - free RPC server reply state on error (5406)
3912 - clean up thread from ptlrpc_start_thread() on error (5160)
3913 - readahead could read extra page into cache that wasn't ejected (5388)
3914 - prevent races in class_attach/setup/cleanup/detach (5260)
3915 - don't dereference de->d_inode after l_dput of de (5458)
3916 - use "int" for stripe value returned from lock_to_stripe (5544)
3917 - mballoc allocation and error-checking fixes in 2.6 (5504)
3918 - block device patches to fix I/O request sizes in 2.6 (5482)
3919 - look up hostnames for IB nals (5602)
3920 - 2.6 changed lock ordering of 2 semaphores, caused deadlock (5654)
3921 - don't start multiple acceptors for the same port (5277)
3922 - fix incorrect LASSERT in mds_getattr_name (5635)
3923 - export a proc file for general "ping" checking (5628)
3924 - fix "lfs check" to not block when the MDS is down (5628)
3926 - service request history (4965)
3927 - put {ll,lov,osc}_async_page structs in a single slab (4699)
3928 - create an "evict_client" /proc entry on OSTs, like the MDS has
3929 - fix mount usage message, return errors per mount(8) (5168)
3930 - change grep [] to grep "[]" in tests so they work in more UMLs
3931 - fix ppc64/x86_64 spec to use %{_libdir} instead of /usr/lib (5389)
3932 - remove ancient LOV_MAGIC_V0 EA support (5047)
3933 - add "disk I/Os in flight" and "I/O req time" stats in obdfilter
3934 - align r/w RPCs to PTLRPC_MAX_BRW_SIZE boundary for performance (3451)
3935 - allow readahead allocations to fail when low on memory (5383)
3936 - mmap locking landed again, after considerable improvement (2828)
3937 - add get_hostaddr() to lustreDB.py for LDAP support (5459)
3939 2004-11-23 Cluster File Systems, Inc. <info@clusterfs.com>
3942 - send OST transaction number in read/write reply to free req (4966)
3943 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3944 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3945 - the watchdog thread now runs as interruptible (5246)
3946 - flock/lockf fixes (but it's still disabled, pending 5135)
3947 - don't use EXT3 constants in llite code (5094)
3948 - memory shortage at startup could cause assertion (5176)
3950 - reorganization of lov code
3951 - single portals codebase
3953 - add extents/mballoc support (5025)
3954 - direct I/O reads in the obdfilter (4048)
3955 - kernel patches from LNXI for 2.6 (bluesmoke, perfctr, mtd, kexec)
3957 tbd Cluster File Systems, Inc. <info@clusterfs.com>
3960 - send OST transaction number in read/write reply to free req (4966)
3961 - don't ASSERT in ptl_send_rpc() if we run out of memory (5119)
3962 - lock /proc/sys/portals/routes internal state, avoiding oops (4827)
3963 - the watchdog thread now runs as interruptible (5246)
3964 - handle missing objects in filter_preprw_read properly (5265)
3965 - unsafe list practices (rarely) led to infinite eviction loop (4908)
3966 - drop import inflight refcount on signal_completed_replay error (5255)
3967 - unlock page after async write error during send (3677)
3968 - return original error code on reconstructed replies (3761)
3969 - no transno return for symlink open, don't save no-trasno open (3440)
3971 - add pid to ldlm debugging output (4922)
3972 - bump the watchdog timeouts -- we can't handle 30sec yet
3973 - extra debugging for orphan dentry/inode bug (5259)
3975 2004-11-16 Cluster File Systems, Inc. <info@clusterfs.com>
3978 - fix TCP_NODELAY bug, which caused extreme perf regression (5134)
3979 - allocate qswnal tx descriptors singly to avoid fragmentation (4504)
3980 - don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
3981 - fix NULL dereference in /proc/sys/portals/routes (4827)
3982 - allow failed mdc_close() operations to be interrupted (4561)
3983 - stop precreate on OST before MDS would time out on it (4778)
3984 - don't send partial-page writes before EOF from client (4410)
3985 - discard client grant for sub-page writes on large-page clients (4520)
3986 - don't free dentries not owned by NFS code, check generation (4806)
3987 - fix lsm leak if mds_create_objects() fails (4801)
3988 - limit debug_daemon file size, always print CERROR messages (4789)
3989 - use transno after validating reply (3892)
3990 - process timed out requests if import state changes (3754)
3991 - update mtime on OST during writes, return in glimpse (4829)
3992 - add mkfsoptions to LDAP (4679)
3993 - use ->max_readahead method instead of zapping global ra (5039)
3994 - don't interrupt __l_wait_event() during strace
3996 - add software watchdogs to catch hung threads quickly (4941)
3997 - make lustrefs init script start after nfs is mounted
3998 - fix CWARN/ERROR duplication (4930)
3999 - return async write errors to application if possible (2248)
4000 - add /proc/sys/portal/memused (bytes allocated by PORTALS_ALLOC)
4001 - print NAL number in %x format (4645)
4002 - update barely-supported suse-2.4.21-171 series (4842)
4003 - support for sles 9 %post scripts
4004 - support for building 2.6 kernel-source packages
4005 - support for sles km_* packages
4007 2004-10-07 Cluster File Systems, Inc. <info@clusterfs.com>
4010 - ignore -ENOENT errors in osc_destroy (3639)
4011 - notify osc create thread that OSC is being cleaned up (4600)
4012 - add nettype argument for llmount in #5d in conf-sanity.sh (3936)
4013 - reconstruct ost_handle() like mds_handle() (4657)
4014 - create a new thread to do import eviction to avoid deadlock (3969)
4015 - let lconf resolve symlinked-to devices (4629)
4016 - don't unlink "objects" from directory with default EA (4554)
4017 - hold socknal file ref over connect in case target is down (4394)
4018 - allow more than 32000 subdirectories in a single directory (3244)
4019 - fix blocks count for O_DIRECT writes (3751)
4020 - OST returns ENOSPC from object create when no space left (4539)
4021 - don't send truncate RPC if file size isn't changing (4410)
4022 - limit OSC precreate to 1/2 of value OST considers bogus (4778)
4023 - bind to privileged port in socknal and tcpnal (3689)
4025 - rate limit CERROR/CWARN console message to avoid overload (4519)
4026 - GETFILEINFO dir ioctl returns LOV EA + MDS stat in 1 call (3327)
4027 - basic mmap support (3918)
4028 - kernel patch series update from b1_4 (4711)
4030 2004-09-16 Cluster File Systems, Inc. <info@clusterfs.com>
4033 - avoid crash during MDS cleanup with OST shut down (2775)
4034 - fix loi_list_lock/oig_lock inversion on interrupted IO (4136)
4035 - don't use bad inodes on the MDS (3744)
4036 - dynamic object preallocation to improve recovery speed (4236)
4037 - don't hold spinlock over lock dumping or change debug flags (4401)
4038 - don't zero obd_dev when it is force cleaned (3651)
4039 - print grants to console if they go negative (4431)
4040 - "lctl deactivate" will stop automatic recovery attempts (3406)
4041 - look for existing locks in ldlm_handle_enqueue() (3764)
4042 - don't resolve lock handle twice in recovery avoiding race (4401)
4043 - revalidate should check working dir is a directory (4134)
4045 - don't always mark "slow" obdfilter messages as errors (4418)
4047 2004-08-24 Cluster File Systems, Inc. <info@clusterfs.com>
4050 - don't close LustreDB during write_conf until it is done (3860)
4051 - fix typo in lconf for_each_profile (3821)
4052 - allow dumping logs from multiple threads at one time (3820)
4053 - don't allow multiple threads in OSC recovery (3812)
4054 - fix debug_size parameters (3864)
4055 - fix mds_postrecov to initialize import for llog ctxt (3121)
4056 - replace config semaphore with spinlock (3306)
4057 - be sure to send a reply for a CANCEL rpc with bad export (3863)
4058 - don't allow enqueue to complete on a destroyed export (3822)
4059 - down write_lock before checking llog header bitmap (3825)
4060 - recover from lock replay timeout (3764)
4061 - up llog sem before sending rpc (3652)
4062 - reduce ns lock hold times when setting kms (3267)
4063 - change a dlm LBUG to LASSERTF, to maybe learn something (4228)
4064 - fix NULL deref and obd_dev leak on setup error (3312)
4065 - replace some LBUG about llog ops with error handling (3841)
4066 - don't match INVALID dentries from d_lookup and spin (3784)
4067 - hold dcache_lock while marking dentries INVALID and hashing (4255)
4068 - fix invalid assertion in ptlrpc_set_wait (3880)
4070 - add libwrap support for the TCP acceptor (3996)
4071 - add /proc/sys/portals/routes for non-root route listing (3994)
4072 - allow setting MDS UUID in .xml (2580)
4073 - print the stack of a process that LBUGs (4228)
4075 2004-07-14 Cluster File Systems, Inc. <info@clusterfs.com>
4078 - don't cleanup request in ll_file_open() on failed MDS open (3430)
4079 - make sure to unset replay flag from failed open requests (3440)
4080 - if default stripe count is 0, use OST count for inode size (3636)
4081 - update parent mtime/ctime on client for create/unlink (2611)
4082 - drop dentry ref in ext3_add_link from open_connect_dentry (3266)
4083 - free recovery state on server during a forced cleanup (3571)
4084 - unregister_reply for resent reqs (3063)
4085 - loop back devices mounting and status check on 2.6 (3563)
4086 - fix resource-creation race that can provoke i_size == 0 (3513)
4087 - don't try to use bad inodes returned from MDS/OST fs lookup (3688)
4088 - more debugging for page-accounting assertion (3746)
4089 - return -ENOENT instead of asserting if ost getattr+unlink race (3558)
4090 - avoid deadlock after precreation failure (3758)
4091 - fix race and lock order deadlock in orphan handling (3450, 3750)
4092 - add validity checks when grabbing inodes from l_ast_data (3599)
4094 - add /proc/.../recovery_status to obdfilter (3428)
4095 - lightweight CDEBUG infrastructure, debug daemon (3668)
4096 - change default OSC RPC parameters to be better on small clusters
4097 - turn off OST read cache for files smaller than 32MB
4098 - install man pages and include them in rpms (3100)
4099 - add new init script for (un)mounting lustre filesystems (2593)
4100 - run chkconfig in %post for init scripts (3701)
4101 - drop scimac NAL (unmaintained)
4103 2004-06-17 Cluster File Systems, Inc. <info@clusterfs.com>
4106 - clean kiobufs before and after use (3485)
4107 - strip trailing '/'s before comparing paths with /proc/mounts (3486)
4108 - remove assertions to work around "in-flight rpcs" recovery bug (3063)
4109 - change init script to fail more clearly if not run as root (1528)
4110 - allow clients to reconnect during replay (1742)
4111 - fix ns_lock/i_sem lock ordering deadlock for kms update (3477)
4112 - don't do DNS lookups on NIDs too small for IP addresses (3442)
4113 - re-awaken ptlrpcd if new requests arrive during check_set (3554)
4114 - fix cond_resched (3554)
4115 - only evict unfinished clients after recovery (3515)
4116 - allow bulk resend, prevent data loss (3570)
4117 - dynamic ptlrpc request buffer allocation (2102)
4118 - don't allow unlinking open directory if it isn't empty (2904)
4119 - set MDS/OST threads to umask 0 to not clobber client modes (3359)
4120 - remove extraneous obd dereference causing LASSERT failure (3334)
4121 - don't use get_cycles() when creating temp. files on the mds (3156)
4122 - hold i_sem when setting i_size in ll_extent_lock() (3564)
4123 - handle EEXIST for set-stripe, set proper directory name (3336)
4125 - servers can dump a log evicting a client - lustre.dump_on_timeout=1
4126 - fix ksocknal_fmb_callback() error messages (2918)
4128 2004-05-27 Cluster File Systems, Inc. <info@clusterfs.com>
4131 - don't copy lvb into (possibly NULL) reply on error (2983)
4132 - don't deref dentry after dput, don't free lvb on error (2922)
4133 - use the kms to determine writeback rpc length (2947)
4134 - increment oti_logcookies when osc is inactive (2948)
4135 - update client's i_blocks count via lvb messages (2543)
4136 - handle intent open/close of special files properly (1557)
4137 - mount MDS with errors=remount-ro, like obdfilter (2009)
4138 - initialize lock handle to avoid ASSERT on error cleanup (3057)
4139 - don't use cancelling-locks' kms values (2947)
4140 - use highest lock extent for kms, not last one (2925)
4141 - don't dereference ERR_PTR() dentry in error handling path (3107)
4142 - fix thread race in portals_debug_dumplog() (3122)
4143 - create lprocfs device entries at setup instead of at attach (1519)
4144 - common AST error handler, don't evict client on completion race (3145)
4145 - zero nameidata in detach_mnt in 2.6 (3118)
4146 - verify d_inode after revalidate_special is valid in 2.6 (3116)
4147 - use lustre_put_super() to handle zconf unmounts in 2.6 (3064)
4148 - initialize RPC timeout timer earlier for 2.6 (3219)
4149 - don't dereference NULL reply buffer if mdc_close was never sent (2410)
4150 - print nal/nid for unknown nid (3258)
4151 - additional checks for oscc recovery before doing precreate (3284)
4152 - fix ll_extent_lock() error return code for 64-bit systems (3043)
4153 - don't crash in mdc_close for bad permissions on open (3285)
4154 - zero i_rdev for non-device files (3147)
4155 - clear page->private before handing to FS, better assertion (3119)
4156 - tune the read pipeline (3236)
4157 - fix incorrect decref of invalidated dentry (2350)
4158 - provide read-ahead stats and refine rpc in flight stats (3328)
4159 - don't hold journal transaction open across create RPC (3313)
4160 - update atime on MDS at close time (3265)
4161 - close LDAP connection when recovering to avoid server load (3315)
4162 - update iopen-2.6 patch with fixes from 2399,2517,2904 (3301)
4163 - don't leak open file on MDS after open resend (3325)
4164 - serialize filter_precreate and filter_destroy_precreated (3329)
4165 - loop device shouldn't call sync_dev() for nul device (3092)
4166 - clear page cache after eviction (2766)
4167 - resynchronize MDS->OST in background (2824)
4168 - refuse to mount the same filesystem twice on same mountpoint (3394)
4169 - allow llmount to create routes for mounting behind routers (3320)
4170 - push lock cancellation to blocking thread for glimpse ASTs (3409)
4171 - don't call osc_set_data_with_check() for TEST_LOCK matches (3159)
4172 - fix rare problem with rename on htree directories (3417)
4174 - allow default OST striping configuration per directory (1414)
4175 - fix compilation for qswnal for 2.6 kernels (3125)
4176 - increase maximum number of MDS request buffers for large systems
4177 - change liblustreapi to be useful for external progs like lfsck (3098)
4178 - increase local configuration timeout for slow disks (3353)
4179 - allow configuring ldlm AST timeout - lustre.ldlm_timeout=<seconds>
4181 2004-03-22 Cluster File Systems, Inc. <info@clusterfs.com>
4184 - fixes for glimpse AST timeouts / incorrectly 0-sized files (2818)
4185 - don't overwrite extent policy data in reply if lock was blocked (2901)
4186 - drop filter export grants atomically with removal from device (2663)
4187 - del obd_self_export from work_list in class_disconnect_exports (2908)
4188 - don't LBUG if MDS recovery times out during orphan cleanup (2530)
4189 - swab reply message in mdc_close, other PPC fixes (2464)
4190 - fix destroying of named logs (2325)
4191 - overwrite old logs when running lconf --write_conf (2264)
4192 - bump LLOG_CHUNKSIZE to 8k to allow for larger clusters (2306)
4193 - fix race in target_handle_connect (2898)
4194 - mds_reint_create() should take same inode create lock (2926)
4195 - correct journal credits calculated for CANCEL_UNLINK_LOG (2931)
4196 - don't close files for self_export to avoid uninitialized obd (2936)
4197 - allow MDS with the same name as client node (2939)
4198 - hold dentry reference for closed log files for unlink (2325)
4199 - reserve space for all logs during transactions (2059)
4200 - don't evict page beyond end of stripe extent (2925)
4201 - don't oops on a deleted current working directory (2399)
4202 - handle hard links to targets without a parent properly (2517)
4203 - don't dereference NULL lock when racing during eviction (2867)
4204 - don't grow lock extents when lots of conflicting locks (2919)
4206 2004-03-04 Cluster File Systems, Inc. <info@clusterfs.com>
4209 - account for cache space usage on clients to avoid data loss (974)
4210 - lfsck support in lustre kernel code (2349)
4211 - reduce journal credits needed for BRW writes (2370)
4212 - orphan handling to avoid losing space on client/server crashes
4213 - ptlrpcd can be blocked, stopping ALL progress (2477)
4214 - use lock value blocks to assist in proper KMS, faster stat (1021)
4215 - takes i_sem instead of DLM locks internally on obdfilter (2720)
4216 - recovery for initial connections (2355)
4217 - fixes for mds_cleanup_orphans (1934)
4218 - abort_recovery crashes MDS in b_eq (mds_unlink_orphan) (2584)
4219 - block all file creations until orphan recovery completes (1901)
4220 - client remove rq_connection from request struct (2423)
4221 - conf-sanity test_5, proper cleanup in umount log not availale (2640)
4222 - recovery timer race (2670)
4223 - mdc_close recovey bug (2532)
4224 - ptlrpc cleanup bug (2710)
4225 - mds timeout on local locks (2588)
4226 - namespace lock held during RPCs (2431)
4227 - handle interrupted sync write properly (2503)
4228 - don't try to handle a message that hasn't been replied to (2699)
4229 - client assert failure during cleanup after abort recovery (2701)
4230 - leak mdc device after failed mount (2712)
4231 - ptlrpc_check_set allows timedout requests to complete (2714)
4232 - wait for inflight reqs when ptlrpcd finishes (2710)
4233 - make sure unregistered services are removed from the srv_list
4234 - reset bulk XID's when resending them (caught by 1138 test)
4235 - unregister_bulk after timeout
4236 - fix lconf error (2694)
4237 - handle write after unfinished setstripe, stripe-only getstripe (2388)
4238 - readahead locks pages, leaves pending causing memory pressure (2673)
4239 - increase OST request buffers to 4096 on large machines (2729)
4240 - fix up permission of existing directories in simple_mkdir (2661)
4241 - init deleted item, add assertions ptlrpc_abort_inflight() (2725)
4242 - don't assign transno to errored transactions (2742)
4243 - don't delete objects on OST if given a bogus objid from MDS (2751)
4244 - handle large client PAGE_SIZE readdir on small PAGE_SIZE MDS (2777)
4245 - if rq_no_resend, then timeout request after recovery (2432)
4246 - fix MDS llog_logid record size, 64-bit array alignment (2733)
4247 - don't call usermode_helper from ptlrpcd, DEFAULT upcall (2773)
4248 - put magic in mount.lustre data, check for bad/NULL mount data (2529)
4249 - MDS recovery shouldn't delete objects that it has given out (2730)
4250 - if enqueue arrives after completion, don't clobber LVB (2819)
4251 - don't unlock pages twice when trigger_group_io returns error (2814)
4252 - don't deref NULL rq_repmsg if ldlm_handle_enqueue failed (2822)
4253 - don't write pages to disk if there was an error (1450)
4254 - don't ping imports that have recovery disabled (2676)
4255 - take buffered bytes into account when balancing socknal conn (2817)
4256 - hold a DLM lock over readdir always, use truncate_inode_pages (2706)
4257 - reconnect unlink llog connection after MDS reconnects to OST (2816)
4258 - remove little-endian swabbing of llog records (1987)
4259 - set/limit i_blksize to LL_MAX_BLKSIZE on client (2884)
4260 - retry reposting request buffers if they fail (1191)
4261 - grow extent at grant time to avoid granting a revoked lock (2809)
4262 - lock revoke doesn't evict page if covered by a second lock (2765)
4263 - disable VM readahead to avoid reading outside lock extents (2805)
4265 - return LL_SUPER_MAGIC from statfs for the filesystem type (1972)
4266 - updated kernel patches for hp-2.4.20 kernel (2681)
4268 2004-02-07 Cluster File Systems, Inc. <info@clusterfs.com>
4271 - fix truncated write corruption (2366)
4272 - fix for failed assertion in iopen_connect_dentry (1792,2517)
4274 - don't flag the ptlrpcd thread with PF_MEMALLOC (2636)
4275 - ensure len(uuid) < 37 in lmc (1171)
4276 - fix ia64 OOPS in llog_test (2255)
4277 - zero end of page at obdfilter for partial page writes (2648)
4278 - don't leave stale dentries around after renames (bug 2428)
4279 - fix timeouts when evicting a client with a single lock held (2642)
4280 - set deadline for the initial HELLO message to drain (2634)
4281 - print out dotted-quad IP addresses in the socknal (2302)
4283 - additional debugging for MDS client eviction problem (2443)
4284 - fix mkfsoptions support for osts (2603, 2604)
4286 2004-01-27 Cluster File Systems, Inc. <info@clusterfs.com>
4289 - add series for the vanilla 2.6.0 kernel
4290 - add series for the vanilla 2.4.24 kernel
4291 - add series for a cray x86/64 UL kernel drop
4292 - fix xattr patches for the vanilla 2.4.19 series
4294 - generate true UUIDs in lmc (1171)
4295 - have portals stack dumping break in UML (2466)
4296 - avoid bad dchild deref; avoid inum lock w/o creation (2362)
4297 - allocate with _NOFS in ldlm to avoid deadlock (1933)
4298 - wake callback waiting threads on client eviction (2460)
4299 - Add --ptldebug and --subsystem to lmc (1719)
4300 - update assertion to allow safe interrupt allocation
4301 - set rq_no_resend for cancel requests (2432)
4302 - recalculate ptlrpcd timeout after resend (2494)
4303 - call vfs_rmdir when removing pending directories (2368)
4304 - fix renaming a file to itself (2429)
4305 - lmc creates a default one-stripe lov (2454)
4306 - expand procfs space to handle large clusters (2326)
4307 - increase UML stack to avoid overflow
4308 - update lconf's list of debug and subsystem masks
4309 - fix lfs find --obd (2510)
4310 - /proc tunable for disabling filter read caching (2591)
4311 - stop rpm packages from altering slapd.conf (2301)
4312 - disable nagle in the socknal under 0conf (2578)
4313 - choose mds inode size based on stripe count (2572)
4314 - fix kernel-source rpm problems (2516)
4316 - add --disable-doc to avoid pdf generation (2421)
4317 - update documentation, tests, type-os, comments
4318 - avoid format warnings on ia64
4319 - remove the TOE NAL
4320 - tiny code cleanups by removing unused fields
4322 2004-01-07 Cluster File Systems, Inc. <info@clusterfs.com>
4325 - fix obvious semaphore misuse in as-yet-unused setattr path (2348)
4326 - remove the most blatant lies from BUILDING file (2371)
4327 - change default debug level to reasonable production setting
4328 - reduce client side cache size to reduce cache flush time
4329 - reduce max RPCs in flight to avoid unnecessary file fragmentation
4330 - make TCP zerocopy and pinger support enabled by default (2476)
4331 - sync writes completed after process exits caused crashes (2319)
4332 - maintain correct mount count on the MDS (2356)
4333 - backout 1557, because 2316 wasn't really fixed
4334 - better file I/O statistics gathering in /proc
4335 - don't take unnecessary, deadlock-inducing bug in readpage (2383)
4336 - another kernel patch to fix zero-copy TCP function export
4337 - don't take duplicate lock when processing re-sent getattr (2420)
4338 - lctl uses obd_self_export instead of creating new conn (2353)
4339 - MDS/OST recovery case which requires object creation asserted (2425)
4340 - move lfs from /usr/sbin to /usr/bin in packages
4341 - fix race between mds_client_add and mds_client_free (2417)
4342 - use kmalloc instead of slabs in portals (2430)
4343 - don't create duplicate records when a failover MDS is present (2442)
4344 - remove unnecessary mount age check (2332)
4345 - don't remove directory inodes from locks prematurely (2451)
4346 - don't break if MDS service name is the same as hostname (2103)
4347 - fix races in client write RPC generation when cache full (2482)
4349 2003-12-13 Cluster File Systems, Inc. <info@clusterfs.com>
4352 - remove now-unused request->rq_obd (278)
4353 - if an allocation fails, print out how much memory we've used (1933)
4354 - use PORTAL_SLAB_ALLOC for structures, to get GFP_MEMALLOC (1933)
4355 - add the "configurable stack size" patch to most series files (1256)
4356 - ability to write large log records, for 100+ OST configs (2306)
4357 - fix NULL deref when filter_prep fails (2314)
4358 - fix operator precedence error in filter_sync
4359 - dynamic allocation of socknal TX descriptors (2315)
4360 - fix a missed case in the GFP_MEMALLOC patch, can cause deadlock (2310)
4361 - fix gcc 2.96 compilation problem in xattr kernel patch (2294)
4362 - ensure that CWARN messages in Portals always get to the syslog
4363 - __init/__exit are not for prototype decls (ldlm_init/exit)
4364 - x86-64 compile warning fixes
4365 - fix gateway LMC keyword conflict (2318)
4366 - fix MDS lock inversions in getattr/reint paths (1844)
4367 - fix a rare lock re-ordering bug, which caused deadlock (2322)
4368 - fix i_sem/journal inversion in fsfilt_ext3_write_record (2306)
4369 - DLM race condition prevented some lock evictions (2328)
4370 - ENOMEM detection and retry on socknal sends (2230)
4371 - use GFP_NOFS throughout Lustre, to combat ENOMEM (2230)
4372 - move osc_rpcd into ptlrpc, for use in MDC and others (2329)
4373 - protect MDS inode fsdata with stronger locking; fixes assertion (2313)
4374 - better error messages when a client is rejected during recovery (1505)
4375 - avoid cancelling locks which were never granted, after failure (2330)
4376 - fix i_sem/journal inversion in mds_client_add (2333)
4377 - fix truncate/getattr lock cycle deadlock (2334)
4378 - use rpcd to send close; allows resend after timeout, avoid leak (1897)
4379 - fix two rare exit paths which could leak an l_lock() ref (2321)
4380 - fencepost error in MDS/OST orphan recovery (2226)
4381 - make log record alignment 8 bytes (1988)
4382 - lstripe now fails when requested offset > ost_count (2237)
4383 - ensure that all kernel series have a complete list.h (1607)
4384 - fix crashes in special-file operations (2316)
4385 - lctl create/brw OID mismatch, caused by obsolete filter loop (2339)
4387 - allow configurable automake binary, for testing new versions
4388 - small update to the lfs documentation
4390 2003-12-03 Cluster File Systems, Inc. <info@clusterfs.com>
4392 * fix negative export reference count in fsfilt_sync (2312)
4394 2003-12-01 Cluster File Systems, Inc. <info@clusterfs.com>
4395 * release candidate 0.9.1
4397 - orphans are moved into the PENDING directory for possible recovery
4398 - replayed opens now open by fid for orphan/rename safety (1042)
4399 - last close of an orphan inode generates a transno (683)
4400 - chdir() and mount() now pin the directory entry (1020)
4401 - avoid CERROR in normal ll_setattr_raw() error case (1500)
4402 - discard very old requests without processing them (1502)
4403 - remove some common, well-understood CERRORs (1505)
4404 - require O_DIRECT I/O to be page-sized to workaround IA64 crash (1609)
4405 - clear "grant" flags in OST replies until OST grant code lands (1644)
4406 - fix read performance by not clobbering i_blksize on client (1598)
4407 - fix __ldlm_handle2lock oops by not dereferencing lock after PUT (1625)
4408 - make LRU size a /proc tunable, clears locks when reduced (707)
4409 - fix some lprocfs rot that prevented ptlbd from loading (1732)
4410 - server locks take references on exports now (1558)
4411 - build fixes for 2.4.20-rh trees (1663)
4412 - return an error from lov_create if all OSCs are inactive (1751)
4413 - fix import levels when a reconnect happens without a timeout (1597)
4414 - exit early from mds_open if we get a lookup error (1749)
4415 - partial page read at EOF wouldn't wait for disk before sending (1642)
4416 - avoid NULL deref in obdfilter when reading page past EOF (1592)
4417 - avoid LASSERT in ll_intent_lock if server failed very early (1090)
4418 - fix LBUG in ll_it_open_error with rc = -2 (1861)
4419 - write/truncate lock inversion (1639)
4420 - Don't auto-load obdclass, portals modules during cleanup (1495)
4421 - fix timestamps from jumping to "now" (1763)
4422 - extra journal assertions (1648)
4423 - add an extra multiunlink test (1771)
4424 - fix read_record/write_record API (1776)
4425 - fix leak of offset_extent, possible incorrect i_size later (1772)
4426 - fix lasserts in mis-matched transnos during open-unlink testing (1541)
4427 - Debugging for the kqswnal_get_idle_tx problems (1820)
4428 - Allow recovery to be attempted multiple times (1536)
4429 - Write out MDS last_rcvd file after it is first created (1600)
4430 - Fix tx_descriptor leak in failed transmit situations (1827)
4431 - ext3 journaling fixes for assertion failure after IO error (1871)
4432 - class_export_put() on freed export after completion AST error (1896)
4433 - Fix revalidate looping in VFS (1322)
4434 - Don't access a freed export during MDS_REINT timeout (1521)
4435 - Add open-unlink recovery support on the MDS (1673,1764)
4436 - Return an error if no MDS data was read from last_rcvd (1946)
4437 - Fix for lookup "." or ".." crash on error (1932,1931,1935)
4438 - Don't setup a disk device that doesn't match exported UUID (317)
4439 - Reduce bulk RPC timeout to avoid cascading client/OST failures (1845)
4440 - avoid committing NULL handle in force close
4441 - local.sh is now a one-stripe LOV configuration
4442 - POSIX utime.4 -EPERM on FIFO not owned by user (56)
4443 - fix ext3 htree duplicate directory entry corruption (1516)
4444 - POSIX creat.13, fstat.1, open.18, stat.3 new file atime/mtime (2020)
4445 - update to new LOV EA format (2097)
4446 - interoperability for different PAGE_SIZE/wordsize (686,1821,1343,2042)
4448 2003-06-15 Phil Schwan <phil@clusterfs.com>
4451 - imports and exports cleanup too early, need refcounts (349, 879, 1045)
4452 - per-import/export recovery handling (958, 931, 959)
4453 - multiple last-rcvd slots, for serving multiple FSes (949)
4454 - connections are again shared between multiple imp/exports (963, 964)
4455 - "umount -f" would hang if any requests needed to be sent (393, 978)
4456 - avoid pinning large req buffer by copying for queued messages (989)
4457 - add "uuid" to "lctl device" command to help upcalls (991)
4458 - "open" RPCs with transnos would confuse recovery counters (1037)
4459 - do proper endian conversion of all wire messages (288, 340, 891)
4460 - remove OST bulk get LBUGs, fix ost_brw_write cleanup (1126)
4461 - call waiting locks callback from LDLM recovery thread (1127, 1151)
4462 - fix ptlrpc_connection leak in target_handle_connect (1174)
4463 - fix import refcounting bug in OST and MDS cleanup (1134)
4464 - if an invalid-at-open-time OSC returned before close(), LBUG (1150)
4465 - fix very unlikely obd_types race condition (501)
4466 - remove osc_open hack for echo_client (1187)
4467 - we leaked exports/dlmimps for forcibly disconnected clients (1143)
4468 - a failure in read_inode2 leads to deadlock (1139)
4469 - cancel ack-locks as soon as transaction is committed (1072)
4470 - fix major leaks and crashes in the bulk I/O path (937, 1057)
4471 - make sure to commitrw after any preprw to avoid deadlock (1162)
4472 - failing to execute a file in a lustre FS would lock inode (1203)
4473 - small DEBUG_REQ fix to avoid dereferencing a NULL (1227)
4474 - don't ASSERT while cleaning up an incompletely-setup obd (1248)
4475 - obd_uuid2tgt would walk off the end of the list (1255)
4476 - on IA64 the osc would give portals incorrect bulk size (1258)
4477 - fix debug daemon ioctl interface; allows daemon on ia64 (1274)
4478 - fix lock inversion caused by new llite matching code (1282)
4479 - limit the number of dirty pages on a client to 10MB (1286)
4480 - timed out locks were not being corrected cancelled (1289)
4481 - fix O_DIRECT above 4GB on IA-32 (1292)
4482 * major user-visible changes
4483 - fail out/fail over policy now controlled by the upcall (993)
4485 - add OBD_PING to check server availability and failure (954)
4486 - lustre messages are now sent in sending host order (288, 340, 891)
4487 - add eadatalen to MDS getattr reply (340)
4488 - OST read replies may contain second buffer, with per-page status (593)
4490 2003-03-11 Phil Schwan <phil@clusterfs.com>
4493 - LDLM_DEBUG macro fix, for gcc 3.2 (850)
4494 - failed open()s could cause deadlock; fixed (867, 869)
4495 - stop cancelling OST locks when files are closed (481)
4496 - overlapping XID spaces caused network corruption (851, 853)
4497 - fix unsafe fsfilt counter arithmetic; change to atomic_t
4498 - setattr_raw added, to do single-RPC, server-side setattrs
4499 - lmc/lconf syntax change for OST UUIDs
4500 - fix crashy race condition between ptlrpc_free_req and osc_close
4501 - don't use request in mdc_enqueue if we hit a timeout (889)
4502 - don't set the inode i_size for regular files from the MDS (896)
4503 - handle out of order completion AST (842)
4504 - don't LBUG if a lock request times out after receiving AST (913)
4505 - avoid d_rehash race in ll_find_alias by rehashing inside dcache_lock
4506 - if a bad lock AST arrives, send an error instead of dropping entirely
4507 - return 0 from revalidate2 if ll_intent_lock returns -EINTR (912)
4508 - fix leak in bulk IO when only partially completed (899, 900, 926)
4509 - fix O_DIRECT for ia64 (55)
4510 - (almost) eliminate Lustre-kernel-thread effects on load average (722)
4511 - C-z after timeout could hang a process forever; fixed (977)
4513 - client-side I/O cache (678, 924, 929, 941, 970)
4515 - READPAGE and SETATTRs which don't take server-side locks get
4518 2003-02-11 Phil Schwan <phil@clusterfs.com>
4521 - Fix ldlm_lock_match on the MDS to avoid matching remote locks (592)
4522 - Fix fsfilt_extN_readpage() to read a full page of directory
4523 entries, or fake the remainder if PAGE_SIZE != blocksize (500)
4524 - Avoid extra mdc_getattr() in ll_intent_lock when possible (534, 604)
4525 - Fix imbalanced LOV object allocation and out-of-bound access (469)
4526 - Most intent operations were removed, in favour of a new RPC mode
4527 that does a single RPC to the server and bypasses most of the VFS
4528 - All LDLM resource ID arrays were removed in favour of ldlm_res_id
4529 - Aggressively cancel local locks on DLM servers
4530 - mds_reint_unlink sends EA to the client if it's the last nlink.
4531 client uses that EA to unlink OST objects.
4532 - mds_reint_{rename,unlink,link} were rewritten to take ordered locks
4533 - recursive symlinks were fixed (439)
4534 - fixed NULL deref in DEBUG_REQ
4535 - filter_update_lastobjid no longer calls sync, which annoyed extN
4536 - fixed multi-client small-writes to a single file problem (445)
4537 - fixed mtime updates during file writes (607)
4538 - fixed vector writes on obdfilter causing problems when ENOSPC (670)
4539 - fixed bug in obd_brw_read/write() (under guise of testing 367)
4540 - fixed Linux OST size reporting problem (444, 656)
4541 - OST now updates object mtime with writes or setattr (607, 619)
4542 - client verifies file size before zeroing page past EOF (445)
4543 - OST now writes last allocated objid to disk with allocation (108)
4544 - LOV on echo now works (409)
4546 - mds_reint_unlink sends a new buffer, with the EA included. this
4547 buffer is only valid if body->valid & OBD_MD_FLEASIZE, which is only
4548 set if a regular file was being unlinked, and it was the last link
4549 - use PtlGet from the target for bulk writes (315)
4550 - OST now updates object mtime with writes or setattr (607, 619)
4551 - LDLM now has a grant-time callback to revalidate locked items, if
4553 - Many MDS operations were reorganized to combat race conditions
4555 - Merge b_intel branch (updated lprocfs code) - now at /proc/fs/lustre
4556 - configure check to avoid gcc version 2.96 20000731-2.96-98) (606)
4558 2003-01-06 Andreas Dilger <adilger@clusterfs.com>
4561 - Fully reactivate OST imports after reconnection (512, others)
4562 - Make sure client sees our -ENOTCONN from mds_handle (513 - partial)
4563 - More graceful error handling for truncating on dead OST (515)
4564 - Don't error out unless we're actually accessing dead stripes (474)
4565 - Fix garbage sizes when stripes are missing (410)
4566 - LRU counters were broken, causing constant lock purge (433, 432)
4567 - garbage on read from stripes with failed OSTs (441)
4568 - mark OSCs as active before reconnecting during recovery (438)
4569 - lov_enqueue and lov_cancel need to handle inactive OSTs (403)
4570 - lfind did not preserve OST order in output (443)
4571 - symlinks cause hung clients, incorrect data (439)
4572 - stop dereferencing request after dropping refcount (457)
4573 - don't LASSERT(spin_is_locked) on non-SMP (455)
4574 - fixes for many rename() bugs
4575 - fstat didn't correctly synchronize attributes (399)
4576 - server must handle lock cancellation during blocking AST prep (487)
4577 - bulk descriptors were free()d too soon (511)
4578 - fix paths in lconf, which would load incorrect modules (451, 507)
4579 - fix confusing lconf 'host not found' error message (386)
4580 - fix lock order deadlock on OST (O/R i_sem before journal ops, 478)
4581 - fix race condition in mdc_blocking_ast() for inode access (526)
4582 - fix lov_unpackmd() unpacking wrong number of stripes (537)
4583 - fix lov_set_osc_active() marking wrong OSC inactive (440)
4584 - fix bad lstripe lov_unpackmd() assertion (fix layering too) (527)
4585 - fix multiple writes of stripe MD to MDS (358, maybe 519)
4586 - fix lstripe in several ways (kernel side) (527)
4587 - fix request leak in ldlm_cli_enqueue (262)
4588 - incorrect OSC was marked inactive after OST failure
4589 - call mds_fs_cleanup before unmounting filesystem (524)
4590 - fix races between taking ns_lock and ldlm_lock_change_resource
4591 - fix races updating LOV export open file list
4592 - fix lov_enqueue error path, avoid decref-ing bad lock handle
4593 - fix recovery NULL deref in ldlm_cli_cancel_unused
4594 - fix some DLM races by using new hash table for lock handles (419)
4595 - permit the client to specify desired inodes, at replay
4596 - duplicate requests when we queue them for replay reintegration
4597 - fix last_rcvd offset calculation
4598 - sync after each recovered transaction, so we always make progress
4599 - never, not always, ERESTART requests without transnos
4600 - store the lov_desc in the MDS, so we don't depend on getlovinfo to
4602 - skip replay if the MDS says that the client is already connected
4603 - don't check for a recovery-enabled export to match lctl's UUID
4604 - don't INC_USE_COUNT for phantom exports
4605 - don't crash when cleaning up phantom exports (567)
4606 - don't double-finish or set replay data for errored mdc_open requests
4607 - abort requests when they time out, so we don't get old replies
4608 - send/receive replies for AST messages again
4609 - if the client says that it doesn't have the lock, cancel it on the
4611 - if we timeout during I/O, don't try to cancel an in-use lock; instead
4612 mark it as destroyed, it will all work out when decref is called
4613 - fix module use counts (22, 581)
4615 - ASTs now expect a reply (server cancels lock on error reply)
4617 2002-12-02 Andreas Dilger <adilger@clusterfs.com>
4620 - fix many simultaneous client startup (392)
4621 - fix dentry->d_it clobbering
4622 - credentials weren't being shipped for readdir/getattr operations
4623 - remove invalid assertions triggered during some concurrent MD
4625 - proper Lustre versions added (336, 389)
4626 - fix memory leak for create error case (398)
4627 - fix LOV locking bug that would get cli/srv out of sync
4628 - fix echo client over LOV (409)
4629 - fix dbench 2, extN refcount problem (170, 258, 356, 418)
4630 - fix double-O_EXCL intent crash (424)
4631 - avoid sending multiple lock CANCELs (352)
4633 - MDS can do multi-client recovery (modulo bugs in new code)
4635 - many updates, edits, cleanups
4637 2002-11-18 Phil Schwan <phil@clusterfs.com>
4640 - fix null d_it dereference (346)
4641 - fix full OST/dbench hang (333)
4642 - fix permission problem with file removal (286)
4643 - fix removal of OSCs from LOV when they fail
4644 - fix NULL deref during bulk timeout (214)
4645 - fix problems related to multiple filesystems on one MDS (241)
4646 - fixed serious subtle metadata locking bugs
4647 - free locks on clients when inodes are removed due to memory
4649 - fix inode pointer in lock data (285)
4650 - partial support for multiple MDS on a single host (241)
4651 - data locks weren't cancelled at clear_inode time (290, 311)
4652 - intent locks could lead to unbounded lock growth (205)
4653 - added a maximum lock count, an LRU list, and a flusher
4654 - fix multiple rename (365)
4655 - properly abstracted the echo client
4656 - OSC locked 1 byte too many; fixed
4657 - rewrote brw callback code:
4658 - fixed recovery bugs related to LOVs (306)
4659 - fixed too-many-pages-in-one-write crash (191)
4660 - fixed (again) crash in sync_io_timeout (214)
4661 - probably fixed callback-related race (385)
4663 - Add capability to MDS protocol
4664 - LDLM cancellations and callbacks on different portals
4666 2002-10-28 Andreas Dilger <adilger@clusterfs.com>
4669 - limit client IOV size to PTL_MD_MAX_IOV (611336, 191)
4670 - defer open object destruction to close time (601981, 138)
4671 - open/close OST file handle in obdo (OBD_MD_FLHANDLE) (601981, 138)
4672 - move LDLM_ENQUEUE/CONVERT back to MDS portal (625069)
4673 - abstract ll_lookup2, fix ll_revalidate2 to use abstraction (256)
4674 - don't call obd_setattr in ll_file_release for destroyed objects
4675 * protocol change to lustre_msg: move |version| and add |flags|
4676 * protocol change to osc_punch: "start" in "o_size", "end" in "o_blocks"
4677 * lock replay: for LDLM_FL_REPLAY trust client to do right thing
4678 * added replay of create, unlink, link and rename operations during
4679 MDS failover; recovery should be much more robust now
4680 * remove failed OSCs from LOVs (only lov_create uses this so far)
4681 * the lustre-HOWTO was brought (more) up to date (582544)
4683 2002-10-23 Phil Schwan <phil@clusterfs.com>
4686 - in-use dentries weren't being reused properly (617851)
4687 - prevent multiple LDLM setup (599178)
4688 - fix LOV size calculations for truncate (617853)
4689 - fix client handling of MDS intent errors (POSIX)
4690 - fix permission bug in lovstripe.c test (624321)
4691 - fix MDS thread deadlock - move LDLM handler to DLM portal (625069)
4692 - truncate past end of file could corrupt data
4693 - proper cleanup after timeouts, crashes, etc (592524, 550815)
4694 - a race in recovery could return ETIMEDOUT to apps (623947)
4695 - building outside the source directory was fixed
4696 * the lustre-HOWTO was brought (more) up to date (582544)
4697 * major progress was made on recovery functionality
4699 2002-10-10 Phil Schwan <phil@clusterfs.com>
4702 - recovery deadlock fix
4703 - rm -rf causes LBUG fix (617817)
4704 - file open by multiple tasks fix (618962)
4705 - directory permissions bugs (602707 and 620007)
4706 - journal_stop fixed with locking (611313)
4707 - O_APPEND failures resolved (618273, perhaps 614459)
4708 - lconf PATH fix (619770)
4709 - IA64 build fix (621450)
4710 - RPC buffer sizes scale with amount of memory
4712 2002-10-01 Phil Schwan <phil@clusterfs.com>
4715 - locks would be cancelled without throwing away data pages,
4716 resulting in inconsistent data (605627)
4717 - inode attributes were not always being refreshed (605627, 612449)
4718 - lconf now continues to cleanup after lctl reports an error
4719 - MDS now enforces user permissions (602707)
4720 - lprocfs cleanup fixed, but not yet enabled (614157)
4721 - fixed infinite server hang, should a client not respond to an AST
4722 - avoid going into recovery if user calls readlink() with a buffer
4723 that's too small (613941)
4724 - AST RPCs no longer require replies (614867) -- this may be changed
4725 - don't crash server if client sends an IOV that's too big (611336)
4726 - fixed lock conversion deadlock (611892)
4727 - fixed the following of symlinks (614622)
4728 * recovery: the server can remove locks from a client that dies, other
4729 clients can make progress
4730 * more extN patch fixes
4731 * compile-time configurable ptlrpc buffer allocations
4733 - collaborative read cache document
4734 - Lustre Lite Performance CDR document-in-progress
4736 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4739 - fix typo in patch-2.4.18
4741 2002-09-20 Andreas Dilger <adilger@clusterfs.com>
4744 - clear ptlrpc request each time in handle_incoming_request()
4745 - unlink of files now destroys the object on the OST
4747 2002-09-19 Peter Braam <braam@clusterfs.com>
4749 * add hard link support
4750 * change obdfile creation method
4751 * kernel patch changed
4753 2002-09-19 Peter Braam <braam@clusterfs.com>
4756 - stack overflow bug in extN fixed
4758 2002-09-18 Andreas Dilger <adilger@clusterfs.com>
4760 * documentation updates
4761 - add man pages for config tools
4762 - update tests/README to describe testing with new config tools
4763 - finish metadata API descriptions
4764 * bug fixes and cleanups
4765 - statfs workaround for 16TB limit
4766 - LOV stripe allocation improved, can stripe on subset of OSTs
4767 - LOV file size/IO offset was wrong for files > 4GB in size
4768 - object EA data was being dropped, caused files to be unreadable
4769 - memory overflow with non-LOV OST caused memory corruption
4770 - fixed regression tests to work with new config tools, obdfilter
4771 - fixed bug when directory size became larger than 1 block
4772 - fixed bug (for single client case) when PWD was deleted
4773 - invalidate local directory pages when doing intent-based ops
4774 - avoid LDLM oops when lock callback contained bad data
4776 2002-09-09 Andreas Dilger <adilger@clusterfs.com>
4778 * documentation updates
4779 * bug fixes and cleanups
4780 - configuration tools
4783 - 64-bit compile warnings
4784 - 64-bit internal statfs data
4786 * test_brw on persistent OST devices
4788 * lprocfs (disabled)
4790 2002-09-04 Andreas Dilger <adilger@clusterfs.com>
4792 * documentation updates
4793 * bug fixes and cleanups
4794 * configuration tools
4796 2002-08-30 Peter J. Braam <braam@clusterfs.com>
4799 * many small fixes to 0_5_4
4800 * io/network handling
4801 * thinkos in MDS operations
4803 2002-08-24 Peter J. Braam <braam@clusterfs.com>
4806 * crucial basic fixes to 0.5.3
4807 * IOR, Iozone work over Elan
4810 2002-08-07 Phil Schwan <phil@clusterfs.com>
4811 * version 0_5_3, our first alpha
4812 * we use the new Portals iovs
4813 * documentation updates
4814 * bug fixes and cleanups
4815 * small changes in the DLM wire protocol
4817 2002-07-25 Peter J. Braam <braam@clusterfs.com>
4818 * version 0_5_1 with some initial stability,
4819 * locking on MD and file I/O.
4820 * documentation updates
4821 * several bug fixes since 0.5.0
4822 * small changes in wire protocol
4824 2002-07-18 Phil Schwan <phil@clusterfs.com>
4826 * delivered as Lustre Light Alpha
4827 * fixed a crash after handling invalid MDS requests
4828 * fixed directory pages for architectures with non-4k pages sizes
4830 2002-07-11 Andreas Dilger <adilger@clusterfs.com>
4831 * release version v0_4_4
4832 * Moves TCP acceptor to be on port 2432 (unused Coda port) instead
4834 * Fixes a number of interruption problems with OST operations.
4835 * Update documentation for portals header changes
4836 * Move all wire protocol structs/defines to lustre_idl.h
4837 * Fixes symlink length bug.
4838 * Add tcpdump to repository.
4840 2002-07-05 Andreas Dilger <adilger@clusterfs.com>
4841 * release version v0_4_3
4842 * Fixes statfs for inodes on extN.
4843 * Fixes bug in runtests which would delete /etc/hosts.
4844 * Use 64-bit object IDs wherever possible (not into VFS though)
4845 Remove ost_get_info, which is unused by lustre, and out of date.
4847 2002-07-03 Peter Braam <braam@clusterfs.com>
4848 * release version v0_4_2 Fixes a lookup error (type not passed)
4849 * move forward to head of Portals
4850 * move forward to latest Lustre kernel
4852 2002-06-25 Peter Braam <braam@clusterfs.com>
4853 * release version v0_4_1. Hopefully stable on single node use.
git://git.whamcloud.com / fs / lustre-release.git / blob