mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
2529c9486a
Fully scripted conversion, see script in initial SPDX license commit message. tests/xfs/044 was hand massaged to remove duplicate copyright and divider lines before running the script. Signed-off-by: Dave Chinner <dchinner@redhat.com>
102 lines
2.8 KiB
Bash
Executable File
102 lines
2.8 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2017 Red Hat, Inc. All Rights Reserved.
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#
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# FS QA Test No. 057
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#
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# Attempt to reproduce log recovery failure by writing corrupt log records over
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# the last good tail in the log. The tail is force pinned while a workload runs
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# the head as close as possible behind the tail. Once the head is pinned,
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# corrupted log records are written to the log and the filesystem shuts down.
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#
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# While log recovery should handle the corrupted log records, it has historical
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# problems dealing with the situation where the corrupted log records may have
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# overwritten the tail of the previous good record in the log. If this occurs,
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# log recovery may fail.
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#
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# This can be reproduced more reliably under non-default conditions such as with
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# the smallest supported FSB sizes and/or largest supported log buffer sizes and
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# counts (logbufs and logbsize mount options).
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#
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# Note that this test requires a DEBUG mode kernel.
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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 $tmp.*
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$KILLALL_PROG -9 fsstress > /dev/null 2>&1
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[ -e /sys/fs/xfs/$sdev/errortag/log_item_pin ] &&
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echo 0 > /sys/fs/xfs/$sdev/errortag/log_item_pin
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wait > /dev/null 2>&1
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}
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rm -f $seqres.full
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/inject
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# real QA test starts here
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# Modify as appropriate.
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_supported_fs xfs
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_supported_os Linux
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_require_xfs_io_error_injection log_item_pin
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_require_xfs_io_error_injection log_bad_crc
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_require_scratch
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_require_command "$KILLALL_PROG" killall
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echo "Silence is golden."
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sdev=$(_short_dev $SCRATCH_DEV)
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# use a small log fs
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_scratch_mkfs_sized $((1024 * 1024 * 500)) >> $seqres.full 2>&1 ||
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_fail "mkfs failed"
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_scratch_mount
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# populate the fs with some data and cycle the mount to reset the log head/tail
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$FSSTRESS_PROG -d $SCRATCH_MNT -z -fcreat=1 -p 4 -n 100000 > /dev/null 2>&1
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_scratch_cycle_mount || _fail "cycle mount failed"
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# Pin the tail and start a file removal workload. File removal tends to
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# reproduce the corruption more reliably.
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_scratch_inject_error log_item_pin 1
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rm -rf $SCRATCH_MNT/* > /dev/null 2>&1 &
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workpid=$!
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# wait for the head to stop pushing forward
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prevhead=-1
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head=`cat /sys/fs/xfs/$sdev/log/log_head_lsn`
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while [ "$head" != "$prevhead" ]; do
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sleep 5
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prevhead=$head
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head=`cat /sys/fs/xfs/$sdev/log/log_head_lsn`
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done
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# Once the head is pinned behind the tail, enable log record corruption and
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# unpin the tail. All subsequent log buffer writes end up corrupted on-disk and
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# result in log I/O errors.
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_scratch_inject_error log_bad_crc 1
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_scratch_inject_error log_item_pin 0
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# wait for fs shutdown to kill the workload
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wait $workpid
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# cycle mount to test log recovery
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_scratch_cycle_mount
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# success, all done
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status=0
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exit
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