| #! /bin/bash |
| # FS QA Test No. 141 |
| # |
| # Use the XFS log record CRC error injection mechanism to test torn writes to |
| # the log. The error injection mechanism writes an invalid CRC and shuts down |
| # the filesystem. The test verifies that a subsequent remount recovers the log |
| # and that the filesystem is consistent. |
| # |
| # Note that this test requires a DEBUG mode kernel. |
| # |
| #----------------------------------------------------------------------- |
| # 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 $seqres.full |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/inject |
| |
| # real QA test starts here |
| |
| # Modify as appropriate. |
| _supported_fs xfs |
| _supported_os Linux |
| _require_xfs_io_error_injection "log_bad_crc" |
| _require_scratch |
| _require_command "$KILLALL_PROG" killall |
| |
| echo "Silence is golden." |
| |
| _scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed" |
| _scratch_mount |
| |
| sdev=$(_short_dev $SCRATCH_DEV) |
| |
| for i in $(seq 1 5); do |
| # Enable error injection. Use a random bad crc factor up to 100 |
| # (increase this value to run fsstress longer). |
| factor=$((RANDOM % 100 + 1)) |
| echo iteration $i log_badcrc_factor: $factor >> $seqres.full 2>&1 |
| _scratch_inject_error "log_bad_crc" "$factor" |
| |
| # Run fsstress until the filesystem shuts down. It will shut down |
| # automatically when error injection triggers. |
| $FSSTRESS_PROG -d $SCRATCH_MNT -p 4 -n 999999 >> $seqres.full 2>&1 |
| |
| # Verify that we can remount the fs. Log recovery should handle the torn |
| # write. |
| _scratch_unmount |
| _scratch_mount |
| done |
| |
| # success, all done |
| status=0 |
| exit |