mirror of
https://github.com/linux-apfs/apfstests.git
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102 lines
2.9 KiB
Bash
102 lines
2.9 KiB
Bash
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#! /bin/bash
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# FS QA Test No. btrfs/034
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#
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# Test for a btrfs incremental send data corruption issue due to
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# bad detection of file holes.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2014 Filipe Manana. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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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=`mktemp -d`
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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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rm -fr $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 btrfs
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_supported_os Linux
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_require_scratch
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_need_to_be_root
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rm -f $seqres.full
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_scratch_mkfs >/dev/null 2>&1
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_scratch_mount
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# Create a file such that its file extent items span at least 3 btree leafs.
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# This is necessary to trigger a btrfs incremental send bug where file hole
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# detection was not correct, leading to data corruption by overriding latest
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# data regions of a file with zeroes.
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run_check $XFS_IO_PROG -f -c "truncate 104857600" $SCRATCH_MNT/foo
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for ((i = 0; i < 940; i++))
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do
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OFFSET=$((32768 + i * 8192))
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LEN=$((OFFSET + 8192))
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run_check $XFS_IO_PROG -c "falloc -k $OFFSET $LEN" $SCRATCH_MNT/foo
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run_check $XFS_IO_PROG -c "pwrite -S 0xf0 $OFFSET 4096" $SCRATCH_MNT/foo
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done
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run_check $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
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$SCRATCH_MNT/mysnap1
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run_check $BTRFS_UTIL_PROG filesystem sync $SCRATCH_MNT
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run_check $XFS_IO_PROG -c "truncate 3882008" $SCRATCH_MNT/foo
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run_check $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
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$SCRATCH_MNT/mysnap2
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run_check $BTRFS_UTIL_PROG send $SCRATCH_MNT/mysnap1 -f $tmp/1.snap
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run_check $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \
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-f $tmp/2.snap
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md5sum $SCRATCH_MNT/foo | _filter_scratch
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md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch
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md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch
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_scratch_unmount
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_check_btrfs_filesystem $SCRATCH_DEV
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_scratch_mkfs >/dev/null 2>&1
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_scratch_mount
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run_check $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/1.snap
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md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch
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run_check $BTRFS_UTIL_PROG receive $SCRATCH_MNT -f $tmp/2.snap
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md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch
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_scratch_unmount
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_check_btrfs_filesystem $SCRATCH_DEV
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status=0
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exit
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