| #! /bin/bash |
| # FSQA Test No. 483 |
| # |
| # Test that fsync operations preserve extents allocated with fallocate(2) that |
| # are placed beyond a file's size. |
| # |
| #----------------------------------------------------------------------- |
| # |
| # Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved. |
| # Author: Filipe Manana <fdmanana@suse.com> |
| # |
| # 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=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| _cleanup_flakey |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/dmflakey |
| . ./common/punch |
| |
| # real QA test starts here |
| _supported_fs generic |
| _supported_os Linux |
| _require_scratch |
| _require_dm_target flakey |
| _require_xfs_io_command "falloc" "-k" |
| _require_xfs_io_command "fiemap" |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _require_metadata_journaling $SCRATCH_DEV |
| _init_flakey |
| _mount_flakey |
| |
| # Create our test files. |
| $XFS_IO_PROG -f -c "pwrite -S 0xea 0 256K" $SCRATCH_MNT/foo >/dev/null |
| |
| # Create a file with many extents. We later want to shrink truncate it and |
| # add a prealloc extent beyond its new size. |
| for ((i = 1; i <= 500; i++)); do |
| offset=$(((i - 1) * 4 * 1024)) |
| $XFS_IO_PROG -f -s -c "pwrite -S 0xcf $offset 4K" \ |
| $SCRATCH_MNT/bar >/dev/null |
| done |
| |
| # A file which already has a prealloc extent beyond its size. |
| # The fsync done on it is motivated by differences in the btrfs implementation |
| # of fsync (first fsync has different logic from subsequent fsyncs). |
| $XFS_IO_PROG -f -c "pwrite -S 0xf1 0 256K" \ |
| -c "falloc -k 256K 768K" \ |
| -c "fsync" \ |
| $SCRATCH_MNT/baz >/dev/null |
| |
| # Make sure everything done so far is durably persisted. |
| sync |
| |
| # Allocate an extent beyond the size of the first test file and fsync it. |
| $XFS_IO_PROG -c "falloc -k 256K 1M"\ |
| -c "fsync" \ |
| $SCRATCH_MNT/foo |
| |
| # Do a shrinking truncate of our test file, add a prealloc extent to it after |
| # its new size and fsync it. |
| $XFS_IO_PROG -c "truncate 256K" \ |
| -c "falloc -k 256K 1M"\ |
| -c "fsync" \ |
| $SCRATCH_MNT/bar |
| |
| # Allocate another extent beyond the size of file baz. |
| $XFS_IO_PROG -c "falloc -k 1M 2M"\ |
| -c "fsync" \ |
| $SCRATCH_MNT/baz |
| |
| # Simulate a power failure and mount the filesystem to check that the extents |
| # previously allocated were not lost and the file sizes are correct. |
| _flakey_drop_and_remount |
| |
| echo "File foo fiemap:" |
| $XFS_IO_PROG -c "fiemap -v" $SCRATCH_MNT/foo | _filter_hole_fiemap |
| echo "File foo size:" |
| stat --format %s $SCRATCH_MNT/foo |
| |
| echo "File bar fiemap:" |
| $XFS_IO_PROG -c "fiemap -v" $SCRATCH_MNT/bar | _filter_hole_fiemap |
| echo "File bar size:" |
| stat --format %s $SCRATCH_MNT/bar |
| |
| echo "File baz fiemap:" |
| $XFS_IO_PROG -c "fiemap -v" $SCRATCH_MNT/baz | _filter_hole_fiemap |
| echo "File baz size:" |
| stat --format %s $SCRATCH_MNT/baz |
| |
| _unmount_flakey |
| _cleanup_flakey |
| |
| status=0 |
| exit |