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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>
72 lines
1.8 KiB
Plaintext
72 lines
1.8 KiB
Plaintext
##/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2016 Red Hat, Inc. All Rights Reserved.
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#
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# common functions for setting up and tearing down a dmdelay device
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DELAY_NONE=0
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DELAY_READ=1
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echo $MOUNT_OPTIONS | grep -q dax
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if [ $? -eq 0 ]; then
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_notrun "Cannot run tests with DAX on dmdelay devices"
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fi
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_init_delay()
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{
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local BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV`
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DELAY_DEV=/dev/mapper/delay-test
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DELAY_TABLE="0 $BLK_DEV_SIZE delay $SCRATCH_DEV 0 0"
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DELAY_TABLE_RDELAY="0 $BLK_DEV_SIZE delay $SCRATCH_DEV 0 10000 $SCRATCH_DEV 0 0"
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_dmsetup_create delay-test --table "$DELAY_TABLE" || \
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_fatal "failed to create delay device"
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}
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_mount_delay()
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{
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_scratch_options mount
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$MOUNT_PROG -t $FSTYP `_common_dev_mount_options` $SCRATCH_OPTIONS \
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$DELAY_DEV $SCRATCH_MNT
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}
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_unmount_delay()
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{
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$UMOUNT_PROG $SCRATCH_MNT
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}
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_cleanup_delay()
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{
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# If dmsetup load fails then we need to make sure to do resume here
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# otherwise the umount will hang
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$DMSETUP_PROG resume delay-test > /dev/null 2>&1
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$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
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_dmsetup_remove delay-test
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}
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# _load_delay_table <table> [lockfs]
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#
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# This defaults to --nolockfs, which doesn't freeze_fs() before loading the new
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# table
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_load_delay_table()
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{
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table="$DELAY_TABLE"
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[ $1 -eq $DELAY_READ ] && table="$DELAY_TABLE_RDELAY"
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suspend_opt="--nolockfs"
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[ $# -gt 1 ] && [ $2 -eq 1 ] && suspend_opt=""
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# run a suspend/resume cycle to avoid excessive resume delays once a
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# delay is introduced below
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$DMSETUP_PROG suspend $suspend_opt delay-test
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$DMSETUP_PROG resume $suspend_opt delay-test
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$DMSETUP_PROG suspend $suspend_opt delay-test
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[ $? -ne 0 ] && _fatal "failed to suspend delay-test"
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$DMSETUP_PROG load delay-test --table "$table"
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[ $? -ne 0 ] && _fatal "failed to load table into delay-test"
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$DMSETUP_PROG resume delay-test
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[ $? -ne 0 ] && _fatal "failed to resume delay-test"
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}
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