mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Omar Sandoval
96c40c9fc4
Make sure we don't shrink the device past an active swap file, but allow shrinking otherwise, as well as growing and balance. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
64 lines
1.8 KiB
Bash
Executable File
64 lines
1.8 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2018 Facebook. All Rights Reserved.
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#
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# FS QA Test 177
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#
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# Test relocation (balance and resize) with an active swap file.
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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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}
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. ./common/rc
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. ./common/filter
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. ./common/btrfs
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rm -f $seqres.full
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# Modify as appropriate.
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch_swapfile
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swapfile="$SCRATCH_MNT/swap"
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# First, create a 1GB filesystem and fill it up.
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_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full 2>&1
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_scratch_mount
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dd if=/dev/zero of="$SCRATCH_MNT/fill" bs=1024k >> $seqres.full 2>&1
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# Now add more space and create a swap file. We know that the first 1GB of the
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# filesystem was used, so the swap file must be in the new part of the
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# filesystem.
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$BTRFS_UTIL_PROG filesystem resize 2G "$SCRATCH_MNT" | _filter_scratch
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_format_swapfile "$swapfile" $((32 * 1024 * 1024))
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swapon "$swapfile"
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# Add even more space which we know is unused.
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$BTRFS_UTIL_PROG filesystem resize 3G "$SCRATCH_MNT" | _filter_scratch
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# Free up the first 1GB of the filesystem.
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rm -f "$SCRATCH_MNT/fill"
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# Get rid of empty block groups and also make sure that balance skips block
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# groups containing active swap files.
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_run_btrfs_balance_start "$SCRATCH_MNT"
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# Shrink away the unused space.
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$BTRFS_UTIL_PROG filesystem resize 2G "$SCRATCH_MNT" | _filter_scratch
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# Try to shrink away the area occupied by the swap file, which should fail.
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$BTRFS_UTIL_PROG filesystem resize 1G "$SCRATCH_MNT" 2>&1 | grep -o "Text file busy"
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swapoff "$swapfile"
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# It should work again after swapoff.
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$BTRFS_UTIL_PROG filesystem resize 1G "$SCRATCH_MNT" | _filter_scratch
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status=0
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exit
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