mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
7e98d41a6e
Refactor every test in the entire test suite to use the new boilerplate functions. This also migrates all the test group information into the test files. This patch has been autogenerated via the command: ./tools/convert-group btrfs ceph cifs ext4 f2fs generic nfs ocfs2 overlay perf shared udf xfs Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
89 lines
2.7 KiB
Bash
Executable File
89 lines
2.7 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2017 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test 156
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#
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# Check if btrfs can correctly trim free space in block groups
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#
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# An ancient regression prevent btrfs from trimming free space inside
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# existing block groups, if bytenr of block group starts beyond
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# btrfs_super_block->total_bytes.
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# However all bytenr in btrfs is in btrfs logical address space,
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# where any bytenr in range [0, U64_MAX] is valid.
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#
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# Fixed by patch named "btrfs: Ensure btrfs_trim_fs can trim the whole fs".
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#
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. ./common/preamble
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_begin_fstest auto quick trim balance
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# Import common functions.
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. ./common/filter
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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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_require_scratch
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_require_fstrim
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# 1024fs size
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fs_size=$((1024 * 1024 * 1024))
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# Use small files to fill half of the fs
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file_size=$(( 1024 * 1024 ))
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nr_files=$(( $fs_size / $file_size / 2))
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# Force to use single data and meta profile.
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# Since the test relies on fstrim output, which will differ for different
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# profiles
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_scratch_mkfs -b $fs_size -m single -d single > /dev/null
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_scratch_mount
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_require_batched_discard "$SCRATCH_MNT"
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for n in $(seq -w 0 $(( $nr_files - 1))); do
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$XFS_IO_PROG -f -c "pwrite 0 $file_size" "$SCRATCH_MNT/file_$n" \
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> /dev/null
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done
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# Flush all buffer data into disk, to trigger chunk allocation
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sync
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# Now we have take at least 50% of the filesystem, relocate all chunks twice
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# so all chunks will start after 1G in logical space.
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# (Btrfs chunk allocation will not rewind to reuse lower space)
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_run_btrfs_balance_start $SCRATCH_MNT >> $seqres.full
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# To avoid possible false ENOSPC alert on v4.15-rc1, seems to be a
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# reserved space related bug (maybe related to outstanding space rework?),
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# but that's another story.
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sync
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_run_btrfs_balance_start $SCRATCH_MNT >> $seqres.full
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# Now remove half of the files to make some holes for later trim.
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# While still keep the chunk space fragmented, so no chunk will be freed
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rm $SCRATCH_MNT/file_*[13579] -f
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# Make sure space is freed
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sync
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trimmed=$($FSTRIM_PROG -v "$SCRATCH_MNT" | _filter_fstrim)
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echo "Trimmed=$trimmed total_size=$fs_size ratio=$(($trimmed * 100 / $fs_size))%" \
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>> $seqres.full
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# For correct full fs trim, both unallocated space (less than 50%)
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# and free space in existing block groups (about 25%) should be trimmed.
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# If less than 50% is trimmed, then only unallocated space is trimmed.
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# BTW, without fix only 31% can be trimmed, while after fix it's 64%.
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if [ $trimmed -lt $(( $fs_size / 2)) ]; then
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echo "Free space in block groups not trimmed"
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echo "Trimmed=$trimmed total_size=$fs_size ratio=$(($trimmed * 100 / $fs_size))%"
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fi
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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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