mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Xiao Yang
f86ce7cc4b
Make sure both "$UDEV_SETTLE_PROG" and "mknodes" can always be run after a dm create or remove operation. Suggested-by: Dave Chinner <david@fromorbit.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
89 lines
1.9 KiB
Bash
Executable File
89 lines
1.9 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2015 Red Hat Inc. All Rights Reserved.
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#
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# FS QA Test No. 085
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#
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# Exercise fs freeze/unfreeze and mount/umount race, which could lead to
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# use-after-free oops.
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#
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# This commit fixed the issue:
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# 1494583 fix get_active_super()/umount() race
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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 $tmp.*
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cleanup_dmdev
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}
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cleanup_dmdev()
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{
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# in case it's still suspended and/or mounted
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$DMSETUP_PROG resume $lvdev >/dev/null 2>&1
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$UMOUNT_PROG $lvdev >/dev/null 2>&1
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_dmsetup_remove $node
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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/filter
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_scratch
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_require_block_device $SCRATCH_DEV
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_require_dm_target linear
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_require_freeze
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setup_dmdev()
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{
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table="0 $size_in_sector linear $SCRATCH_DEV 0"
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_dmsetup_create $node --table "$table" || \
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_fail "setup dm device failed"
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}
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rm -f $seqres.full
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echo "Silence is golden"
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size=$((256 * 1024 * 1024))
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size_in_sector=$((size / 512))
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_scratch_mkfs_sized $size >>$seqres.full 2>&1
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node=$seq-test
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lvdev=/dev/mapper/$node
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setup_dmdev
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# take use of dmsetup suspend to freeze the fs.
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# xfs_freeze/fsfreeze cannot be used in this test, because it can possibly
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# freeze the root fs of the host when SCRATCH_MNT is not mounted
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#
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# And the results of the racing commands (suspend/resume, mount/umount) are not
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# important, as long as they're racing with each other. So just throw away the
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# outputs and ignore the results.
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for ((i=0; i<100; i++)); do
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$DMSETUP_PROG suspend $lvdev >/dev/null 2>&1
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$DMSETUP_PROG resume $lvdev >/dev/null 2>&1
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done &
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pid=$!
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for ((i=0; i<100; i++)); do
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$MOUNT_PROG $lvdev $SCRATCH_MNT >/dev/null 2>&1
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$UMOUNT_PROG $lvdev >/dev/null 2>&1
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done &
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pid="$pid $!"
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wait $pid
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status=0
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exit
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