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Filipe Manana
043e5bb164
Test that after doing a memory mapped write to an empty file, a call to stat(2) reports a non-zero number of used blocks. This is motivated by a bug in btrfs where the number of blocks used does not change. It currenly fails on btrfs and it is fixed by a patch that has the following subject: "btrfs: fix missing delalloc new bit for new delalloc ranges" Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
51 lines
1.0 KiB
Bash
Executable File
51 lines
1.0 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 No. 614
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#
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# Test that after doing a memory mapped write to an empty file, a call to
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# stat(2) reports a non-zero number of used blocks.
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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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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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# real QA test starts here
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_supported_fs generic
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_require_scratch
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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$XFS_IO_PROG -f -c "truncate 64K" \
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-c "mmap -w 0 64K" \
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-c "mwrite -S 0xab 0 64K" \
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-c "munmap" \
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$SCRATCH_MNT/foobar | _filter_xfs_io
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blocks_used=$(stat -c %b $SCRATCH_MNT/foobar)
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if [ $blocks_used -eq 0 ]; then
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echo "error: stat(2) reported 0 used blocks"
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fi
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echo "Silence is golden"
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status=0
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exit
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