| #! /bin/bash |
| # FS QA Test No. 079 |
| # |
| # Regression test for a bug in the log record checksum mechanism of XFS. Log |
| # records are checksummed during recovery and a warning or mount failure occurs |
| # on checksum verification failure. XFS had a bug where the checksum mechanism |
| # verified different parts of a record depending on the current log buffer size. |
| # This caused spurious checksum failures when a filesystem is recovered using a |
| # different log buffer size from when the filesystem crashed. |
| # |
| # Test that log recovery succeeds with a different log buffer size from when the |
| # filesystem crashed. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2015 Red Hat, Inc. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| #----------------------------------------------------------------------- |
| # |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| $KILLALL_PROG -9 fsstress > /dev/null 2>&1 |
| wait > /dev/null 2>&1 |
| } |
| |
| rm -f $seqres.full |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/log |
| |
| # real QA test starts here |
| |
| # Modify as appropriate. |
| _supported_fs xfs |
| _supported_os Linux |
| _require_scratch |
| _require_v2log |
| _require_command "$KILLALL_PROG" killall |
| |
| echo "Silence is golden." |
| |
| dmesg -c > /dev/null |
| |
| _scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed" |
| _scratch_mount "-o logbsize=32k" |
| |
| # Run a workload to dirty the log, wait a bit and shutdown the fs. |
| $FSSTRESS_PROG -d $SCRATCH_MNT -p 4 -n 99999999 >> $seqres.full 2>&1 & |
| sleep 10 |
| ./src/godown -f $SCRATCH_MNT |
| wait |
| |
| # Remount with a different log buffer size. Going from 32k to 64k increases the |
| # log record extended header count, as the log record header can only handle 32k |
| # of space. |
| _scratch_unmount |
| _scratch_mount "-o logbsize=64k" |
| |
| # The mount may not fail on v4 filesystems. Check for CRC mismatch warning |
| # messages to detect failure in this case. |
| dmesg -c | grep XFS | grep CRC |
| |
| # success, all done |
| status=0 |
| exit |