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fs/lustre-release.git
13 years agoImproved obdfilter-survey.
jitendra [Fri, 27 Jul 2007 09:42:58 +0000 (09:42 +0000)]
Improved obdfilter-survey.
added libobd, a common library to setup, echo clients/servers,
cleanups and other common lctl related setups and cleanups etc.

b=11171
i:nathan

13 years agofix for problem where orphaned lstats processes can be left running on nodes
walter [Thu, 26 Jul 2007 19:37:09 +0000 (19:37 +0000)]
fix for problem where orphaned lstats processes can be left running on nodes
(which prevents subsequents stats gathering from working for new test cases).

also add debug macros for easier tracing/debugging in the future

13 years agob=12421
cliffw [Thu, 26 Jul 2007 18:37:28 +0000 (18:37 +0000)]
b=12421
i=brian
i=wangdi

Adds stats-collect to RPM build.

13 years agob=12302
maxim [Thu, 26 Jul 2007 15:14:52 +0000 (15:14 +0000)]
b=12302
the section is added to support "lustrecvs b_usocklnd" (lnet usocklnd development branch)

13 years agoBranch b1_6
scjody [Wed, 25 Jul 2007 02:51:15 +0000 (02:51 +0000)]
Branch b1_6

Add 1.6.2 to changelogs

13 years agoBranch b1_6
scjody [Tue, 24 Jul 2007 21:40:57 +0000 (21:40 +0000)]
Branch b1_6

Update for 1.6.1

13 years agoBranch b1_6
scjody [Tue, 24 Jul 2007 21:05:44 +0000 (21:05 +0000)]
Branch b1_6

Run modpost without the -m flag when it isn't supported - fixes SLES 9
build issue.  Also move the modpost tests to their own configure rule
and use it only when building ldiskfs.

b=12842
i=mjmac
i=brian

13 years agob=12741
cliffw [Tue, 24 Jul 2007 19:13:27 +0000 (19:13 +0000)]
b=12741
b=11485
i=scjody
i=johann
        11485 - sgpdd_survey uses readcap for block size
        12741 - better error checking for sgpdd_survey

13 years agobug=10851
cliffw [Tue, 24 Jul 2007 19:00:34 +0000 (19:00 +0000)]
bug=10851
i=scjody
i=johann

Fixes minor issues, verify is now an env var, defaulted off.
Changes 'rm' to 'rm -f'

13 years agoBranch: HEAD
wangdi [Tue, 24 Jul 2007 13:54:22 +0000 (13:54 +0000)]
Branch: HEAD
remove unnecessary config

13 years agoBranch b1_6
scjody [Tue, 24 Jul 2007 00:46:55 +0000 (00:46 +0000)]
Branch b1_6

Update Module.symvers after building the ldiskfs module so its symbols
appear in fsfilt_ldiskfs - avoids build warnings and kernel tainting.

This commit includes both the original patch (which was backed out) and fixes
to the build issues seen on SLES 9 and RHEL 4.

b=12842
i=brian
i=mjmac

13 years agoBranch b1_6
scjody [Mon, 23 Jul 2007 23:23:01 +0000 (23:23 +0000)]
Branch b1_6

Revert this change since it caused build failures.

b=12842

13 years agob=12903
alex [Sun, 22 Jul 2007 10:18:41 +0000 (10:18 +0000)]
b=12903
i=kalpak
i=johann

 - skip PAs being destroyed in normalization path
 - drop group lock in discard group preallocation path to avoid deadlock

13 years agoBranch b1_6
scjody [Sat, 21 Jul 2007 00:21:43 +0000 (00:21 +0000)]
Branch b1_6

Update Module.symvers after building the ldiskfs module so its symbols
appear in fsfilt_ldiskfs - avoids build warnings and kernel tainting.

b=12842
i=brian
i=mjmac

13 years agoBranch: HEAD
wangdi [Fri, 20 Jul 2007 17:49:42 +0000 (17:49 +0000)]
Branch: HEAD
1) add client stats collection in lstat.
2) add README

13 years agoBranch b1_6
scjody [Fri, 20 Jul 2007 16:44:23 +0000 (16:44 +0000)]
Branch b1_6

Exit on 'make sources' failure so that the rest of the build fails at the
correct time.

b=13026
i=mjmac
i=brian

13 years agoBranch b1_6
johann [Fri, 20 Jul 2007 15:10:41 +0000 (15:10 +0000)]
Branch b1_6

Re-add the following patches as per Andreas' request (on rmg@):

ldiskfs/kernel_patches/patches/ext3-check-jbd-errors-2.6-sles10.patch
ldiskfs/kernel_patches/patches/ext3-external-journal-2.6.9.patch
ldiskfs/kernel_patches/patches/ext3-statfs-2.6.18.patch
lustre/kernel_patches/patches/link_notlast-susefix.patch
lustre/kernel_patches/patches/vfs_nointent-2.6-sles10.patch

13 years ago* 12982 - Increased default router buffer pool sizes in line with customer
eeb [Fri, 20 Jul 2007 11:48:18 +0000 (11:48 +0000)]
*  12982 - Increased default router buffer pool sizes in line with customer
   experience at LLNL, Sandia and ORNL

13 years agoBranch b1_6
johann [Fri, 20 Jul 2007 08:54:07 +0000 (08:54 +0000)]
Branch b1_6
b=11039
i=nathan
i=scjody
(get approval by email on rmg@)

Remove obsolete kernel patches.

13 years agoBranch:HEAD
wangdi [Thu, 19 Jul 2007 19:40:21 +0000 (19:40 +0000)]
Branch:HEAD
extract csv file from the collect result

13 years agoBranch b1_6
scjody [Thu, 19 Jul 2007 00:21:57 +0000 (00:21 +0000)]
Branch b1_6

To improve performance, disable most logging (for debug purposes)
by default.  VFSTRACE, RPCTRACE, and DLMTRACE are now off by
default, and HA includes contains fewer messages.

Original patch by adilger.

b=12417
i=scjody
i=green

13 years agoBranch b1_6
johann [Wed, 18 Jul 2007 20:56:05 +0000 (20:56 +0000)]
Branch b1_6
b=11039
i=adilger
i=scjody

Remove 2.4 and 2.6.12 kernel patches.

13 years agob=12348
mjmac [Wed, 18 Jul 2007 20:36:51 +0000 (20:36 +0000)]
b=12348
i=brian
i=adilger
* Try to load llog_test kernel module via modprobe before trying to load
  via insmod
* Run depmod after installing lustre-tests RPM, so that 'modprobe llog_test'
  will succeed

13 years agoAdded b_new_cmd_sles10 to list of branches that will use the branched ldiskfs module
howlett [Wed, 18 Jul 2007 18:27:44 +0000 (18:27 +0000)]
Added b_new_cmd_sles10 to list of branches that will use the branched ldiskfs module

13 years agoBranch b1_6
johann [Wed, 18 Jul 2007 07:43:12 +0000 (07:43 +0000)]
Branch b1_6
b=12861
i=alex
i=adilger
i=kalpak

Severity   : major
Bugzilla   : 12861
Description: ldiskfs_ext_search_right: bad header in inode #3981353: unexpected
     eh_depth
Details    : a wrong check of extent headers in ldiskfs_ext_search_right()
     can cause the filesystem to be remounted read-only.

13 years agoBranch: HEAD
wangdi [Tue, 17 Jul 2007 20:42:02 +0000 (20:42 +0000)]
Branch: HEAD
add stats collect scripts to iokit

13 years agoBranch b1_6
johann [Tue, 17 Jul 2007 19:14:34 +0000 (19:14 +0000)]
Branch b1_6
b=11039
i=adilger
i=alex

attachment 11242 / extents patch against 2.6.18

13 years agoBranch b1_6
johann [Tue, 17 Jul 2007 07:38:22 +0000 (07:38 +0000)]
Branch b1_6
b=11039
i=alex
i=adilger

mballoc3 patch against 2.6.18: fix conflicts with bug 12746.

13 years agoBranch b1_6
johann [Tue, 17 Jul 2007 07:15:48 +0000 (07:15 +0000)]
Branch b1_6
b=11039
i=adilger
i=kalpak

attachment 11245 / update ldiskfs series and the remaining patches for 2.6.18
support

13 years agoBranch b1_6
johann [Tue, 17 Jul 2007 07:01:11 +0000 (07:01 +0000)]
Branch b1_6
b=11039
i=adilger
i=kalpak

attachment 11410 / uninit support for 2.6.18

13 years agoBranch b1_6
johann [Tue, 17 Jul 2007 06:56:36 +0000 (06:56 +0000)]
Branch b1_6
b=11039
i=alex
i=adilger

attachment 11236 / mballoc3 support for 2.6.18.

13 years agoBranch b1_6
scjody [Tue, 17 Jul 2007 00:14:34 +0000 (00:14 +0000)]
Branch b1_6

Revert this change since it caused build failures on RHEL 4.

b=11932

13 years agoBranch b1_6
scjody [Mon, 16 Jul 2007 23:24:48 +0000 (23:24 +0000)]
Branch b1_6

Disable automatic dependencies on SLES 10.

b=11932
i=mjmac

13 years agoBranch HEAD
liangzhen [Sat, 14 Jul 2007 09:26:03 +0000 (09:26 +0000)]
Branch HEAD
Remove BULK_IN header reading optimisation, it's not worthy and not safe

13 years agotemporarily add ldiskfs tag for b1_8_gssfix.
ericm [Fri, 13 Jul 2007 03:21:44 +0000 (03:21 +0000)]
temporarily add ldiskfs tag for b1_8_gssfix.

13 years agoBranch HEAD
liangzhen [Thu, 12 Jul 2007 06:44:23 +0000 (06:44 +0000)]
Branch HEAD
Check and warning user if session NID is not valide

13 years agob=12350
brian [Wed, 11 Jul 2007 21:02:59 +0000 (21:02 +0000)]
b=12350
r=scjody,mjmac

Handle situation where update-modules.dep doesn't exist (SLES10).

13 years ago* remove warning in ulnds/socklnd
eeb [Tue, 10 Jul 2007 12:58:34 +0000 (12:58 +0000)]
*   remove warning in ulnds/socklnd

13 years agoBranch HEAD
liangzhen [Tue, 10 Jul 2007 12:19:07 +0000 (12:19 +0000)]
Branch HEAD
. Support multi-groups/IDs in show_error command
. Nnemonic parameters for add_test brw command
. Specify I/O size of brw in bytes, KB or MB
. small fixes

13 years ago- fixed typo in a comment.
isaac [Tue, 10 Jul 2007 04:10:43 +0000 (04:10 +0000)]
-   fixed typo in a comment.

13 years agob=11495
maxim [Mon, 9 Jul 2007 16:46:53 +0000 (16:46 +0000)]
b=11495
i=isaac
Fix of double-free bug in tcplnd (Checking return from read_connection())

13 years agoBranch HEAD
liangzhen [Mon, 9 Jul 2007 10:03:32 +0000 (10:03 +0000)]
Branch HEAD
Remove some unused variables

13 years ago- support "lustrecvs b_mpilnd" to check out the lnet mpilnd development branch.
isaac [Sat, 7 Jul 2007 07:27:42 +0000 (07:27 +0000)]
-   support "lustrecvs b_mpilnd" to check out the lnet mpilnd development branch.

13 years agoBranch b1_6
yangsheng [Fri, 6 Jul 2007 10:22:51 +0000 (10:22 +0000)]
Branch b1_6
b=<12415>
r=<adilger,green>

13 years agoBranch HEAD
liangzhen [Fri, 6 Jul 2007 07:38:22 +0000 (07:38 +0000)]
Branch HEAD
. Show_error command
. warning if server group has userland test nodes
. lst depends on LND_LIBS

13 years agoBranch b1_6
adilger [Wed, 4 Jul 2007 20:05:53 +0000 (20:05 +0000)]
Branch b1_6
Fix check for s->history allocation NULL return.
b=11039
i=alex

13 years agoBranch HEAD
adilger [Wed, 4 Jul 2007 19:08:21 +0000 (19:08 +0000)]
Branch HEAD
Add sample .quiltrc to have options that reduce CVS patch update differences.
b=12415

13 years agoi=eeb:
isaac [Wed, 4 Jul 2007 17:39:52 +0000 (17:39 +0000)]
i=eeb:
-   check against LNET_PID_ANY in libcfs_id2str.
-   clear all lazy portals before lnet_clear_peer_table.

13 years agoi=liangzhen:
isaac [Wed, 4 Jul 2007 16:45:05 +0000 (16:45 +0000)]
i=liangzhen:
-   collect session-specific ping error counter.
-   set brw_inject_errors and session_timeout via environment variables
    when in userland.
-   removed tsu_error and renamed tsi_stop_onerr as tsi_stoptsu_onerr.

13 years agob=12746
alex [Fri, 29 Jun 2007 08:35:33 +0000 (08:35 +0000)]
b=12746
i=kalpak
i=johann

 - bug in quota handling fixed (found with sanity-quota.sh)

13 years agoi=adilger
nathan [Thu, 28 Jun 2007 18:42:11 +0000 (18:42 +0000)]
i=adilger
* fix ldiskfs module path
* add uml debug file paths

13 years ago- added sfw_set_session_timeout to set session_timeout from userland.
isaac [Thu, 28 Jun 2007 07:45:35 +0000 (07:45 +0000)]
-   added sfw_set_session_timeout to set session_timeout from userland.

13 years ago- signal timer thread at exit.
isaac [Wed, 27 Jun 2007 06:15:15 +0000 (06:15 +0000)]
-   signal timer thread at exit.
-   reset crpc_bulk.bk_pages should happen after brw_check_bulk is done.

13 years agoBranch b1_6
liangzhen [Tue, 26 Jun 2007 05:40:40 +0000 (05:40 +0000)]
Branch b1_6
b=12573
i=scjody
Include external headers before $LINUX/include

13 years ago- lstclient should only be enabled when LIBLUSTRE is on.
isaac [Fri, 22 Jun 2007 15:25:33 +0000 (15:25 +0000)]
-   lstclient should only be enabled when LIBLUSTRE is on.

13 years ago- fixed a compiler warning.
isaac [Fri, 22 Jun 2007 07:57:11 +0000 (07:57 +0000)]
-   fixed a compiler warning.

13 years agoimprove checks for exported symbols. This allow run check without sources, but with
shadow [Fri, 22 Jun 2007 07:01:49 +0000 (07:01 +0000)]
improve checks for exported symbols. This allow run check without sources, but with
Module.symvers shipped with kernel distribution.
add check for truncate_complete_page used by patchless client.

b=12415
i=adilger
i=scjody

13 years ago- added LNET self test (landing b_self_test).
isaac [Fri, 22 Jun 2007 06:47:52 +0000 (06:47 +0000)]
-   added LNET self test (landing b_self_test).

13 years agofix recusrive autogen.sh invocation in set -a shell
nikita [Thu, 21 Jun 2007 22:01:26 +0000 (22:01 +0000)]
fix recusrive autogen.sh invocation in set -a shell

13 years agolanding fix for bug 12227.
nikita [Thu, 21 Jun 2007 21:31:08 +0000 (21:31 +0000)]
landing fix for bug 12227.

13 years agoBranch b1_6
johann [Thu, 21 Jun 2007 07:53:32 +0000 (07:53 +0000)]
Branch b1_6
b=12678
i=adilger
i=scjody

Severity   : enhancement
Bugzilla   : 12678
Description: remove fs_prep_san_write operation and related patches
Details    : remove the ext3-san-jdike patches which are no longer useful.

13 years agoBranch b1_6
johann [Thu, 21 Jun 2007 07:37:26 +0000 (07:37 +0000)]
Branch b1_6
b=11324
i=adilger
i=alex

Severity   : normal
Frequency  : rare
Bugzilla   : 11324
Description: LDISKFS-fs error (device sdc): ldiskfs_free_blocks
Details    : a disk corruption can cause the mballoc code to assert on a
     double free.

13 years agofix some mal-formatted DEBUG_REQ and LCONSOLE_ERROR_MSG messages
shadow [Thu, 21 Jun 2007 06:21:37 +0000 (06:21 +0000)]
fix some mal-formatted DEBUG_REQ and LCONSOLE_ERROR_MSG messages

b=12747
i=wangdi
i=scjody

13 years ago2.6.22 has only one visble change for patchless cleint, SLAB_CTOR_* constants is
shadow [Thu, 21 Jun 2007 05:41:47 +0000 (05:41 +0000)]
2.6.22 has only one visble change for patchless cleint, SLAB_CTOR_* constants is
removed. In this case we need drop using os depended interface to
kmem_cache and use cfs_mem_cache API.

b=12764
i=green
i=wangdi

13 years agokernels from 2.6.21 not need include linux/config.h, but add include
shadow [Thu, 21 Jun 2007 05:02:53 +0000 (05:02 +0000)]
kernels from 2.6.21 not need include linux/config.h, but add include
linux/autoconf.h in commpiler command line.

b=12605
i=wangdi
i=scjody

13 years agoBranch b1_4
bobijam [Thu, 21 Jun 2007 03:08:09 +0000 (03:08 +0000)]
Branch b1_4
b=11686
i=green, adilger

improve some error messages.

13 years agoBranch HEAD (for b1_6)
walter [Thu, 21 Jun 2007 01:41:21 +0000 (01:41 +0000)]
Branch HEAD (for b1_6)
b=12348
i=adilger
i=mjmac

fix build errors seen when compiling on cray xt3 systems

13 years agob=12348
mjmac [Wed, 20 Jun 2007 20:14:41 +0000 (20:14 +0000)]
b=12348
i=adilger
i=scjody

* Include llog_test.ko in lustre-tests RPM
* Include liblustre tests, when present, in lustre-tests RPM

13 years agoreplace #if by #ifdef
liangzhen [Wed, 20 Jun 2007 17:53:55 +0000 (17:53 +0000)]
replace #if by #ifdef

13 years agoAdd OFED1.2 support to o2iblnd
liangzhen [Wed, 20 Jun 2007 17:43:52 +0000 (17:43 +0000)]
Add OFED1.2 support to o2iblnd

13 years ago- fixed a typo.
isaac [Mon, 18 Jun 2007 17:45:17 +0000 (17:45 +0000)]
-   fixed a typo.

13 years agoi=eeb
isaac [Mon, 18 Jun 2007 14:38:21 +0000 (14:38 +0000)]
i=eeb
-   fixed a typo.

13 years agoRemove unnecessary variables from lnet_proc_init
liangzhen [Thu, 14 Jun 2007 18:17:27 +0000 (18:17 +0000)]
Remove unnecessary variables from lnet_proc_init

13 years ago- use special ldiskfs branch for b_post_cmd3
tappro [Thu, 14 Jun 2007 10:11:29 +0000 (10:11 +0000)]
- use special ldiskfs branch for b_post_cmd3

13 years agoBranch HEAD
bobijam [Thu, 14 Jun 2007 09:16:49 +0000 (09:16 +0000)]
Branch HEAD
b=11680
i=wangdi
i=shadow

Description: make panic on lbug configurable

13 years agoadd macro LCONSOLE_ERROR_MSG with extra parameter and map
shadow [Thu, 14 Jun 2007 08:33:24 +0000 (08:33 +0000)]
add macro LCONSOLE_ERROR_MSG with extra parameter and map
LCONSOLE_ERROR(fmt, arg) to LCONSOLE_ERROR_MSG(0x000, fmt, ## arg).

b=10595
i=adilger

13 years agoBranch: b_hd_ctxt
wangdi [Thu, 14 Jun 2007 06:47:59 +0000 (06:47 +0000)]
Branch: b_hd_ctxt
update from b1_6

13 years agoBranch b1_6
scjody [Wed, 13 Jun 2007 21:23:29 +0000 (21:23 +0000)]
Branch b1_6

Fix build after autoMakefile.toplevel.am rename

b=12068

13 years agoBranch b1_6
scjody [Wed, 13 Jun 2007 21:08:24 +0000 (21:08 +0000)]
Branch b1_6

Rename autoMakefile.toplevel.am back to autoMakefile.am.toplevel to fix
other branches (the top level lustre module is shared between most
branches, unfortunately.)

b=12068

13 years agoThis update includes Hex error ID's and checksum calculation for console error messages.
jitendra [Wed, 13 Jun 2007 07:28:20 +0000 (07:28 +0000)]
This update includes Hex error ID's and checksum calculation for console error messages.
It also includes code fixes for first five improved error messages.

b=10595
i=adilger
i=braam

13 years agoBranch HEAD
scjody [Wed, 13 Jun 2007 01:09:07 +0000 (01:09 +0000)]
Branch HEAD

Move to new ldiskfs series, formerly known as ldiskfs2.

b=12068

13 years agoUpdate .cvsignore files
scjody [Wed, 13 Jun 2007 00:37:07 +0000 (00:37 +0000)]
Update .cvsignore files

13 years agoBranch b1_6
scjody [Tue, 12 Jun 2007 23:39:31 +0000 (23:39 +0000)]
Branch b1_6

Add --disable-modules to fix LTS build failure.

b=12068

13 years agoBranch b1_6
scjody [Tue, 12 Jun 2007 22:34:31 +0000 (22:34 +0000)]
Branch b1_6

Remove CVS test file

13 years agoBranch b1_6
scjody [Tue, 12 Jun 2007 22:29:18 +0000 (22:29 +0000)]
Branch b1_6

Add files missed in last commit.  AFAIK I did things right but CVS shows
them as "Status: Entry Invalid" and won't let me add them except in a
fresh checkout.

b=12068
i=brian
i=mjmac

13 years agocvs test
scjody [Tue, 12 Jun 2007 22:25:53 +0000 (22:25 +0000)]
cvs test

13 years agoBranch b1_6
scjody [Tue, 12 Jun 2007 22:00:37 +0000 (22:00 +0000)]
Branch b1_6

Move ldiskfs to its own package and CVS module.

b=12068
i=mjmac
i=brian

13 years ago- should init kptllnd_data.kptl_idle_txs before calling kptllnd_shutdown.
isaac [Tue, 12 Jun 2007 19:17:12 +0000 (19:17 +0000)]
-   should init kptllnd_data.kptl_idle_txs before calling kptllnd_shutdown.
-   should init kptllnd_data.kptl_ptlid2str_lock before calling kptllnd_ptlid2str.

13 years agoBranch HEAD
scjody [Mon, 11 Jun 2007 21:51:43 +0000 (21:51 +0000)]
Branch HEAD

Fix weird build issue

13 years agoi=eeb:
isaac [Mon, 11 Jun 2007 09:42:20 +0000 (09:42 +0000)]
i=eeb:
-   gmlnd ignored some transmit errors when finalizing lnet messages.

13 years agob=12348
mjmac [Fri, 8 Jun 2007 18:53:20 +0000 (18:53 +0000)]
b=12348
i=scjody
i=adilger

* Create a lustre-tests RPM that includes stuff from lustre/tests

13 years agoBranch HEAD
scjody [Fri, 8 Jun 2007 17:44:49 +0000 (17:44 +0000)]
Branch HEAD

Initial commit of new ldiskfs module.  This is based on ldiskfs from
b1_6; patches and series files are identical to those found there.

b=12068
i=mjmac
i=brian

13 years agob=12348
mjmac [Fri, 8 Jun 2007 15:49:31 +0000 (15:49 +0000)]
b=12348
i=scjody
i=adilger

* Create a lustre-tests RPM that includes stuff from lustre/tests

13 years agoRemove semicolon after MACRO do {...} while (0)
liangzhen [Thu, 7 Jun 2007 19:15:43 +0000 (19:15 +0000)]
Remove semicolon after MACRO do {...} while (0)

13 years agoi=eeb
isaac [Thu, 31 May 2007 17:02:20 +0000 (17:02 +0000)]
i=eeb
-   ptllnd logs a piece of incorrect debug info in kptllnd_peer_handle_hello.

13 years agoi=eeb
isaac [Wed, 30 May 2007 08:35:45 +0000 (08:35 +0000)]
i=eeb
-   should set the_lnet.ln_finalizing before completing messages.

13 years ago* changed /proc/sys/lnet/peers and debug peer output so that only routers
eeb [Fri, 25 May 2007 13:42:27 +0000 (13:42 +0000)]
*   changed /proc/sys/lnet/peers and debug peer output so that only routers
    show state as "up" or "down" - non-routers show "~rtr".

13 years agoBranch:b_hd_ctxt
wangdi [Thu, 24 May 2007 14:01:50 +0000 (14:01 +0000)]
Branch:b_hd_ctxt
update from b1_6

13 years agofile ext3-raid5-zerocopy.patch was initially added on branch b_HEAD_bug11890.
jxiong [Thu, 24 May 2007 03:01:02 +0000 (03:01 +0000)]
file ext3-raid5-zerocopy.patch was initially added on branch b_HEAD_bug11890.

13 years agofile raid5-zerocopy.patch was initially added on branch b_HEAD_bug11890.
jxiong [Thu, 24 May 2007 03:01:01 +0000 (03:01 +0000)]
file raid5-zerocopy.patch was initially added on branch b_HEAD_bug11890.