mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Qu Wenruo
7f3a0bf60d
This is a test case for a long existing bug, caused by over-estimated metadata space_info::bytes_may_use. There is one proposed patch for btrfs-progs to fix it, titled: "btrfs-progs: balance: Sync the fs before balancing metadata chunks" The test case itself is almost the same as btrfs/181, which uses small files to bump the reserved space to trigger the false alert. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
62 lines
1.3 KiB
Bash
Executable File
62 lines
1.3 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test 182
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#
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# Test if balance will report false ENOSPC error
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#
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# This is a long existing bug, caused by over-estimated metadata
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# space_info::bytes_may_use.
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#
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# There is one proposed patch for btrfs-progs to fix it, titled:
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# "btrfs-progs: balance: Sync the fs before balancing metadata chunks"
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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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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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# Modify as appropriate.
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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nr_files=1024
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_scratch_mkfs > /dev/null
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_scratch_mount
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$BTRFS_UTIL_PROG subvolume create "$SCRATCH_MNT/subvol" > /dev/null
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# Create some small files to take up enough metadata reserved space
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for ((i = 0; i < $nr_files; i++)) do
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_pwrite_byte 0xcd 0 1K "$SCRATCH_MNT/subvol/file_$i" > /dev/null
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done
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$BTRFS_UTIL_PROG balance start -m "$SCRATCH_MNT" > /dev/null
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# success, all done
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echo "Silence is golden"
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status=0
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exit
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