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https://github.com/linux-apfs/apfstests.git
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Chandan Babu R
febeb7ec8b
The minimum length space allocator (i.e.
xfs_bmap_exact_minlen_extent_alloc()) depends on the underlying
filesystem to be fragmented so that there are enough one block sized
extents available to satify space allocation requests.
xfs/{532,533,538} tests issue space allocation requests for metadata
(e.g. for blocks holding directory and xattr information). With
realtime filesystem instances, these tests would end up fragmenting
the space on realtime device. Hence minimum length space allocator
fails since the regular filesystem space is not fragmented and hence
there are no one block sized extents available.
Thus, this commit disables realtime inherit flag (if any) on root
directory so that space on data device gets fragmented rather than
realtime device.
Suggested-by: Darrick J. Wong <djwong@kernel.org>
Reported-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
147 lines
3.2 KiB
Bash
Executable File
147 lines
3.2 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
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#
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# FS QA Test 532
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#
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# Verify that XFS does not cause inode fork's extent count to overflow when
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# adding/removing xattrs.
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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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. ./common/attr
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. ./common/inject
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. ./common/populate
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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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_supported_fs xfs
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_require_scratch
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_require_attrs
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_require_xfs_debug
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_require_test_program "punch-alternating"
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_require_xfs_io_error_injection "reduce_max_iextents"
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_require_xfs_io_error_injection "bmap_alloc_minlen_extent"
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echo "Format and mount fs"
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_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full
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_scratch_mount >> $seqres.full
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# Disable realtime inherit flag (if any) on root directory so that space on data
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# device gets fragmented rather than realtime device.
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$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
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bsize=$(_get_block_size $SCRATCH_MNT)
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attr_len=255
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testfile=$SCRATCH_MNT/testfile
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echo "Consume free space"
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fillerdir=$SCRATCH_MNT/fillerdir
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nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT)
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nr_free_blks=$((nr_free_blks * 90 / 100))
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_fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 0 >> $seqres.full 2>&1
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echo "Create fragmented filesystem"
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for dentry in $(ls -1 $fillerdir/); do
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$here/src/punch-alternating $fillerdir/$dentry >> $seqres.full
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done
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echo "Inject bmap_alloc_minlen_extent error tag"
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_scratch_inject_error bmap_alloc_minlen_extent 1
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echo "* Set xattrs"
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echo "Create \$testfile"
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touch $testfile
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echo "Inject reduce_max_iextents error tag"
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_scratch_inject_error reduce_max_iextents 1
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echo "Create xattrs"
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nr_attrs=$((bsize * 20 / attr_len))
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for i in $(seq 1 $nr_attrs); do
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attr="$(printf "trusted.%0247d" $i)"
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$SETFATTR_PROG -n "$attr" $testfile >> $seqres.full 2>&1
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[[ $? != 0 ]] && break
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done
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echo "Verify \$testfile's naextent count"
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naextents=$(_xfs_get_fsxattr naextents $testfile)
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if (( $naextents > 10 )); then
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echo "Extent count overflow check failed: naextents = $naextents"
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exit 1
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fi
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echo "Disable reduce_max_iextents error tag"
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_scratch_inject_error reduce_max_iextents 0
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echo "Remove \$testfile"
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rm $testfile
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echo "* Remove xattrs"
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echo "Create \$testfile"
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touch $testfile
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echo "Create initial xattr extents"
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naextents=0
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last=""
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start=1
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nr_attrs=$((bsize / attr_len))
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while (( $naextents < 4 )); do
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end=$((start + nr_attrs - 1))
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for i in $(seq $start $end); do
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attr="$(printf "trusted.%0247d" $i)"
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$SETFATTR_PROG -n $attr $testfile
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done
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start=$((end + 1))
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naextents=$(_xfs_get_fsxattr naextents $testfile)
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done
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echo "Inject reduce_max_iextents error tag"
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_scratch_inject_error reduce_max_iextents 1
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echo "Remove xattr to trigger -EFBIG"
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attr="$(printf "trusted.%0247d" 1)"
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$SETFATTR_PROG -x "$attr" $testfile >> $seqres.full 2>&1
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if [[ $? == 0 ]]; then
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echo "Xattr removal succeeded; Should have failed "
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exit 1
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fi
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echo "Disable reduce_max_iextents error tag"
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_scratch_inject_error reduce_max_iextents 0
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rm $testfile
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# success, all done
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status=0
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exit
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