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https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Qu Wenruo
b77be1c0ca
Test if canceling a running balance can cause later balance to dead loop. The fix is titled "btrfs: relocation: Clear the DEAD_RELOC_TREE bit for orphan roots to prevent runaway balance". Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
67 lines
1.5 KiB
Bash
Executable File
67 lines
1.5 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2020 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test 213
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#
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# Test if canceling a running balance can lead to dead looping balance
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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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kill $write_pid &> /dev/null
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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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# 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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_require_xfs_io_command pwrite -D
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_scratch_mkfs >> $seqres.full
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_scratch_mount
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runtime=4
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# Create enough IO so that we need around $runtime seconds to relocate it.
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#
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# Here we don't want any wrapper, as we want full control of the process.
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$XFS_IO_PROG -f -c "pwrite -D -b 1M 0 1024T" "$SCRATCH_MNT/file" &> /dev/null &
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write_pid=$!
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sleep $runtime
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kill $write_pid
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wait $write_pid
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# Now balance should take at least $runtime seconds, we can cancel it at
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# $runtime/2 to ensure a success cancel.
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_run_btrfs_balance_start -d --bg "$SCRATCH_MNT"
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sleep $(($runtime / 2))
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$BTRFS_UTIL_PROG balance cancel "$SCRATCH_MNT"
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# Now check if we can finish relocating metadata, which should finish very
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# quickly.
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$BTRFS_UTIL_PROG balance start -m "$SCRATCH_MNT" >> $seqres.full
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echo "Silence is golden"
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# success, all done
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status=0
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exit
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