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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Red Hat, Inc. All Rights Reserved.
#
# 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.
#
. ./common/preamble
_begin_fstest auto log metadata
# Override the default cleanup function.
_cleanup()
{
cd /
rm -f $tmp.*
$KILLALL_PROG -9 fsstress > /dev/null 2>&1
wait > /dev/null 2>&1
}
# Import common functions.
. ./common/inject
# real QA test starts here
# Modify as appropriate.
_supported_fs xfs
_require_xfs_io_error_injection "log_bad_crc"
_require_scratch
_require_command "$KILLALL_PROG" killall
echo "Silence is golden."
_scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
_scratch_mount
sdev=$(_short_dev $SCRATCH_DEV)
nr_times=$((TIME_FACTOR * 5))
while [ $nr_times -gt 0 ]; do
# Enable error injection. Use a random bad crc factor up to 100
# (increase this value to run fsstress longer).
factor=$((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 >> $seqres.full 2>&1
# Verify that we can remount the fs. Log recovery should handle the torn
# write.
_scratch_unmount
_scratch_mount
nr_times=$((nr_times - 1))
done
# success, all done
status=0
exit
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