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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
a860a167d8
fstests only supports Linux, so get rid of this unnecessary predicate. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
81 lines
2.0 KiB
Bash
Executable File
81 lines
2.0 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2013 Oracle, Inc. All Rights Reserved.
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#
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# FS QA Test No. 051
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#
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# Simulate a buffer use after free race in XFS log recovery. The race triggers
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# on I/O failures during log recovery. Note that this test is dangerous as it
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# causes BUG() errors or a panic.
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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 $FSSTRESS_PROG > /dev/null 2>&1
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_scratch_unmount > /dev/null 2>&1
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/dmflakey
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# Modify as appropriate.
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_supported_fs xfs
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_require_scratch
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_require_dm_target flakey
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_require_xfs_sysfs debug/log_recovery_delay
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_require_command "$KILLALL_PROG" killall
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echo "Silence is golden."
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_scratch_mkfs_xfs >/dev/null 2>&1
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_scratch_mount
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# Start a workload and shutdown the fs. The subsequent mount will require log
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# recovery.
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$FSSTRESS_PROG -n 9999 -p 2 -w -d $SCRATCH_MNT > /dev/null 2>&1 &
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sleep 5
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_scratch_shutdown -f
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$KILLALL_PROG -q $FSSTRESS_PROG
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wait
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_scratch_unmount
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# Initialize a dm-flakey device that will pass I/Os for 5s and fail thereafter.
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_init_flakey
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BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV`
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FLAKEY_TABLE="0 $BLK_DEV_SIZE flakey $SCRATCH_DEV 0 5 180"
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_load_flakey_table $FLAKEY_ALLOW_WRITES
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# Set a 10s log recovery delay and mount the flakey device. This should allow
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# initial writes to proceed (e.g., stale log block reset) and then let the
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# flakey uptime timer expire such that I/Os will fail by the time log recovery
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# starts.
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echo 10 > /sys/fs/xfs/debug/log_recovery_delay
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# The mount should fail due to dm-flakey. Note that this is dangerous on kernels
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# without the xfs_buf log recovery race fixes.
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_mount_flakey > /dev/null 2>&1
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echo 0 > /sys/fs/xfs/debug/log_recovery_delay
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_cleanup_flakey
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# replay the log
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_scratch_mount
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_scratch_unmount
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# success, all done
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status=0
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exit
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