2015-12-21 18:00:29 +11:00
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#! /bin/bash
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# FS QA Test No. 137
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#
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# XFS v5 supers carry an LSN in various on-disk structures to track when
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# associated metadata was last written to disk. These metadata LSNs must always
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# be behind the current LSN as dictated by the log to ensure log recovery
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# correctness after a potential crash. This test uses xfs_db to intentionally
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# put the current LSN behind metadata LSNs and verifies that the kernel and
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# xfs_repair detect the problem.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015 Red Hat, Inc. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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rm -f $seqres.full
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# get standard environment, filters and checks
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. ./common/rc
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# real QA test starts here
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# Modify as appropriate.
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_supported_fs xfs
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_supported_os Linux
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_require_scratch
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2016-03-23 14:33:57 +11:00
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_require_scratch_xfs_crc
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2015-12-21 18:00:29 +11:00
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_require_xfs_db_command "logformat"
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_scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
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# push the log cycle ahead so we have room to move it backwards later
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2016-09-29 19:23:41 -07:00
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_scratch_xfs_db -x -c "logformat -c 3" >> $seqres.full 2>&1
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2015-12-21 18:00:29 +11:00
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# do some work on the fs to update metadata LSNs
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_scratch_mount
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$FSSTRESS_PROG -d $SCRATCH_MNT -n 999 -p 4 -w >> $seqres.full 2>&1
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_scratch_unmount
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# Reformat to the current cycle and try to mount. This fails in most cases
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# because the sb LSN is ahead of the current LSN. If it doesn't fail, push the
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# cycle back further and try again.
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2016-09-29 19:23:41 -07:00
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_scratch_xfs_db -x -c "logformat" >> $seqres.full 2>&1
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2015-12-21 18:00:29 +11:00
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_scratch_mount >> $seqres.full 2>&1
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if [ $? != 0 ]; then
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echo mount failure detected
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else
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_scratch_unmount
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2016-09-29 19:23:41 -07:00
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_scratch_xfs_db -x -c "logformat -c 2" >> $seqres.full 2>&1
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2015-12-21 18:00:29 +11:00
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_scratch_mount >> $seqres.full 2>&1 || echo mount failure detected
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fi
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# verify that repair detects invalid LSNs as well
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$XFS_REPAIR_PROG -n $SCRATCH_DEV >> $seqres.full 2>&1 || \
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echo repair failure detected
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# repair for real so the post-test check can verify repair fixed things up
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$XFS_REPAIR_PROG $SCRATCH_DEV >> $seqres.full 2>&1
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# success, all done
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status=0
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exit
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