| #! /bin/bash |
| # FS QA Test No. btrfs/034 |
| # |
| # Test for a btrfs incremental send data corruption issue due to |
| # bad detection of file holes. |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2014 Filipe Manana. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| #----------------------------------------------------------------------- |
| # |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| tmp=`mktemp -d` |
| |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| rm -fr $tmp |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _supported_os Linux |
| _require_scratch |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| # Create a file such that its file extent items span at least 3 btree leafs. |
| # This is necessary to trigger a btrfs incremental send bug where file hole |
| # detection was not correct, leading to data corruption by overriding latest |
| # data regions of a file with zeroes. |
| |
| $XFS_IO_PROG -f -c "truncate 104857600" $SCRATCH_MNT/foo |
| |
| for ((i = 0; i < 940; i++)) |
| do |
| OFFSET=$((32768 + i * 8192)) |
| LEN=$((OFFSET + 8192)) |
| $XFS_IO_PROG -c "falloc -k $OFFSET $LEN" $SCRATCH_MNT/foo |
| $XFS_IO_PROG -c "pwrite -S 0xf0 $OFFSET 4096" \ |
| $SCRATCH_MNT/foo | _filter_xfs_io |
| done |
| |
| _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1 |
| |
| $XFS_IO_PROG -c "truncate 3882008" $SCRATCH_MNT/foo |
| |
| _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2 |
| |
| _run_btrfs_util_prog send -f $tmp/1.snap $SCRATCH_MNT/mysnap1 |
| _run_btrfs_util_prog send -f $tmp/2.snap -p $SCRATCH_MNT/mysnap1 \ |
| $SCRATCH_MNT/mysnap2 |
| |
| md5sum $SCRATCH_MNT/foo | _filter_scratch |
| md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch |
| md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch |
| |
| _scratch_unmount |
| _check_btrfs_filesystem $SCRATCH_DEV |
| _scratch_mkfs >/dev/null 2>&1 |
| _scratch_mount |
| |
| _run_btrfs_util_prog receive -f $tmp/1.snap $SCRATCH_MNT |
| md5sum $SCRATCH_MNT/mysnap1/foo | _filter_scratch |
| |
| _run_btrfs_util_prog receive -f $tmp/2.snap $SCRATCH_MNT |
| md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch |
| |
| _scratch_unmount |
| _check_btrfs_filesystem $SCRATCH_DEV |
| |
| status=0 |
| exit |