On Mon, Sep 02, 2019 at 10:07:01AM -0700, Darrick J. Wong wrote: > On Mon, Sep 02, 2019 at 09:53:58PM +0800, Zorro Lang wrote: > > The _xfs_check sometimes need to take too much memory, some quota > > related cases (e.g: xfs/442, generic/232 etc) always trigger OOM > > killer. > > > > [93334.020194] xfs_db invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=-1000 > > [93334.020206] xfs_db cpuset=/ mems_allowed=0 > > [93334.020213] CPU: 2 PID: 977 Comm: xfs_db Kdump: loaded Not tainted 4.18.0-139.el8.ppc64le+debug #1 > > [93334.020217] Call Trace: > > [93334.020223] [c0000001cb163640] [c000000001035754] dump_stack+0xe8/0x164 (unreliable) > > [93334.020229] [c0000001cb163690] [c0000000004a77dc] dump_header+0x7c/0x670 > > [93334.020234] [c0000001cb1637b0] [c0000000004a872c] oom_kill_process+0x26c/0x3d0 > > [93334.020239] [c0000001cb163800] [c0000000004aa438] out_of_memory+0x278/0x930 > > [93334.020244] [c0000001cb1638a0] [c0000000004bd6c8] __alloc_pages_nodemask+0x1ab8/0x1b70 > > [93334.020248] [c0000001cb163ae0] [c00000000058b8dc] alloc_pages_vma+0xec/0x660 > > [93334.020253] [c0000001cb163b50] [c00000000052b544] do_anonymous_page+0x124/0xac0 > > [93334.020258] [c0000001cb163bc0] [c000000000534918] __handle_mm_fault+0xda8/0x1b60 > > [93334.020263] [c0000001cb163cb0] [c000000000535948] handle_mm_fault+0x278/0x5a0 > > [93334.020268] [c0000001cb163d00] [c00000000008b30c] __do_page_fault+0x27c/0xe00 > > [93334.020273] [c0000001cb163df0] [c00000000008bec8] do_page_fault+0x38/0xf0 > > [93334.020278] [c0000001cb163e30] [c00000000000a904] handle_page_fault+0x18/0x38 > > [93334.020281] Mem-Info: > > [93334.020286] active_anon:93769 inactive_anon:13540 isolated_anon:0 > > [93334.020286] active_file:23 inactive_file:8 isolated_file:0 > > [93334.020286] unevictable:0 dirty:0 writeback:0 unstable:0 > > [93334.020286] slab_reclaimable:1543 slab_unreclaimable:8926 > > [93334.020286] mapped:69 shmem:15 pagetables:76 bounce:0 > > [93334.020286] free:2756 free_pcp:0 free_cma:0 > > > > The xfs_check related code is old, and nearly won't be maintained > > too much, test xfs_repair and xfs_scrub is much more important than > > xfs_check. But the xfstests always do a POST-xfs_check at the end of > > each cases. So I'd like to add a new helper named > > _require_scratch_no_xfs_check to skip xfs_check from some sub-cases. > > > > Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx> > > --- > > > > Hi, > > > > Maybe this patch not the best way to deal with this issue. Please feel free to > > tell me if you have better idea. > > I would just get rid of it (and have tried several times) but have not > had the time to check that xfs_repair can detect every corruption that > xfs_check can. > > (To get started, I think it involves forking the dangerous_repair group > tests to run _xfs_check and xfs_repair -n one after the other to compare > outputs.) JFYI, I remembered I hit once xfs_check failure[1] which xfs_repair -n didn't find. And then, this bug fixed by another bug(CLOSE DUPLICATE): https://bugzilla.kernel.org/show_bug.cgi?id=200137 Thanks, Zorro _check_xfs_filesystem: filesystem on /dev/mapper/xxxx-xfstest is inconsistent (c) *** xfs_check output *** bad nblocks 2 for free inode 1028 block 0/549 type unknown not expected block 0/550 type unknown not expected # xfs_repair -n /dev/mapper/xxxx-xfstest Phase 1 - find and verify superblock... - reporting progress in intervals of 15 minutes Phase 2 - using internal log - zero log... - scan filesystem freespace and inode maps... - 05:54:54: scanning filesystem freespace - 16 of 16 allocation groups done - found root inode chunk Phase 3 - for each AG... - scan (but don't clear) agi unlinked lists... - 05:54:54: scanning agi unlinked lists - 16 of 16 allocation groups done - process known inodes and perform inode discovery... - agno = 15 - agno = 0 - agno = 1 - agno = 2 - agno = 3 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - agno = 10 - agno = 11 - agno = 12 - agno = 13 - agno = 14 - 05:54:54: process known inodes and inode discovery - 64 of 64 inodes done - process newly discovered inodes... - 05:54:54: process newly discovered inodes - 16 of 16 allocation groups done Phase 4 - check for duplicate blocks... - setting up duplicate extent list... - 05:54:54: setting up duplicate extent list - 16 of 16 allocation groups done - check for inodes claiming duplicate blocks... - agno = 0 - agno = 6 - agno = 10 - agno = 3 - agno = 4 - agno = 5 - agno = 8 - agno = 7 - agno = 1 - agno = 9 - agno = 15 - agno = 11 - agno = 12 - agno = 14 - agno = 13 - agno = 2 - 05:54:54: check for inodes claiming duplicate blocks - 64 of 64 inodes done No modify flag set, skipping phase 5 Phase 6 - check inode connectivity... - traversing filesystem ... - traversal finished ... - moving disconnected inodes to lost+found ... Phase 7 - verify link counts... - 05:54:54: verify and correct link counts - 16 of 16 allocation groups done No modify flag set, skipping filesystem flush and exiting. # xfs_db -F -i -p xfs_check -c "check" /dev/mapper/xxxx-xfstest bad nblocks 2 for free inode 1028 block 0/549 type unknown not expected block 0/550 type unknown not expected > > --D > > > Thanks, > > Zorro > > > > common/rc | 1 + > > common/xfs | 26 ++++++++++++++++++++++++++ > > tests/generic/232 | 2 ++ > > tests/generic/233 | 2 ++ > > tests/generic/234 | 2 ++ > > tests/xfs/442 | 2 ++ > > 6 files changed, 35 insertions(+) > > > > diff --git a/common/rc b/common/rc > > index e0b087c1..86eeda16 100644 > > --- a/common/rc > > +++ b/common/rc > > @@ -1570,6 +1570,7 @@ _require_scratch() > > { > > _require_scratch_nocheck > > touch ${RESULT_DIR}/require_scratch > > + touch ${RESULT_DIR}/require_scratch.xfs_check > > } > > > > # require a scratch dev of a minimum size (in kb) > > diff --git a/common/xfs b/common/xfs > > index 1bce3c18..80e6d1e8 100644 > > --- a/common/xfs > > +++ b/common/xfs > > @@ -168,11 +168,37 @@ _scratch_mkfs_xfs() > > return $mkfs_status > > } > > > > +# Usage: _require_scratch_no_xfs_check [limit_memsize] > > +# > > +# Due to xfs_check costs too much memory, sometimes it cause OOM when test on > > +# low memory machine. This function is used to skip xfs_check conditionally > > +# or unconditionally. > > +# > > +# Note: must be called after _require_scratch. > > +_require_scratch_no_xfs_check() > > +{ > > + local bound=$1 > > + local freemem > > + > > + freemem=`_free_memory_bytes` > > + if [ -n "$bound" ];then > > + if [ $freemem -lt $bound ];then > > + rm -f ${RESULT_DIR}/require_scratch.xfs_check > > + fi > > + else > > + rm -f ${RESULT_DIR}/require_scratch.xfs_check > > + fi > > +} > > + > > # xfs_check script is planned to be deprecated. But, we want to > > # be able to invoke "xfs_check" behavior in xfstests in order to > > # maintain the current verification levels. > > _xfs_check() > > { > > + if [ ! -f "${RESULT_DIR}/require_scratch.xfs_check" ];then > > + return 0 > > + fi > > + > > OPTS=" " > > DBOPTS=" " > > USAGE="Usage: xfs_check [-fsvV] [-l logdev] [-i ino]... [-b bno]... special" > > diff --git a/tests/generic/232 b/tests/generic/232 > > index d5c20249..20841313 100755 > > --- a/tests/generic/232 > > +++ b/tests/generic/232 > > @@ -52,6 +52,8 @@ _fsstress() > > _supported_fs generic > > _supported_os Linux > > _require_scratch > > +# Do post xfs_check, if free memory size > 16G > > +_require_scratch_no_xfs_check $((16 * 1024 * 1024 * 1024)) > > _require_quota > > > > _scratch_mkfs > $seqres.full 2>&1 > > diff --git a/tests/generic/233 b/tests/generic/233 > > index c49bf252..7933d4b8 100755 > > --- a/tests/generic/233 > > +++ b/tests/generic/233 > > @@ -56,6 +56,8 @@ _fsstress() > > _supported_fs generic > > _supported_os Linux > > _require_scratch > > +# Do post xfs_check, if free memory size > 16G > > +_require_scratch_no_xfs_check $((16 * 1024 * 1024 * 1024)) > > _require_quota > > _require_user > > > > diff --git a/tests/generic/234 b/tests/generic/234 > > index dc296df8..e843dc10 100755 > > --- a/tests/generic/234 > > +++ b/tests/generic/234 > > @@ -72,6 +72,8 @@ test_setting() > > _supported_fs generic > > _supported_os Linux > > _require_scratch > > +# Do post xfs_check, if free memory size > 16G > > +_require_scratch_no_xfs_check $((16 * 1024 * 1024 * 1024)) > > _require_quota > > > > # real QA test starts here > > diff --git a/tests/xfs/442 b/tests/xfs/442 > > index 7a5f2e8e..9e891b51 100755 > > --- a/tests/xfs/442 > > +++ b/tests/xfs/442 > > @@ -36,6 +36,8 @@ _supported_fs xfs > > _supported_os Linux > > > > _require_scratch_reflink > > +# Do post xfs_check, if free memory size > 16G > > +_require_scratch_no_xfs_check $((16 * 1024 * 1024 * 1024)) > > _require_quota > > _require_command "$KILLALL_PROG" "killall" > > > > -- > > 2.17.2 > >
