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https://github.com/linux-apfs/apfstests.git
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Chandan Babu R
490a8d56fb
This test verifies that XFS does not cause inode fork's extent count to overflow when writing to an unwritten extent. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
85 lines
1.8 KiB
Bash
Executable File
85 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) 2021 Chandan Babu R. All Rights Reserved.
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#
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# FS QA Test 534
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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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# writing to an unwritten extent.
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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/inject
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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_xfs_debug
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_require_xfs_io_command "falloc"
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_require_xfs_io_error_injection "reduce_max_iextents"
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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 >> $seqres.full
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bsize=$(_get_file_block_size $SCRATCH_MNT)
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testfile=${SCRATCH_MNT}/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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nr_blks=15
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for io in Buffered Direct; do
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echo "* $io write to unwritten extent"
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echo "Fallocate $nr_blks blocks"
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$XFS_IO_PROG -f -c "falloc 0 $((nr_blks * bsize))" $testfile >> $seqres.full
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if [[ $io == "Buffered" ]]; then
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xfs_io_flag=""
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else
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xfs_io_flag="-d"
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fi
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echo "$io write to every other block of fallocated space"
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for i in $(seq 1 2 $((nr_blks - 1))); do
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$XFS_IO_PROG -f -s $xfs_io_flag -c "pwrite $((i * bsize)) $bsize" \
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$testfile >> $seqres.full 2>&1
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[[ $? != 0 ]] && break
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done
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echo "Verify \$testfile's extent count"
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nextents=$(_xfs_get_fsxattr nextents $testfile)
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if (( $nextents > 10 )); then
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echo "Extent count overflow check failed: nextents = $nextents"
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exit 1
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fi
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rm $testfile
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done
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# success, all done
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status=0
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exit
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