| #! /bin/bash |
| # FS QA Test No. btrfs/149 |
| # |
| # Test that an incremental send/receive operation will not fail when the |
| # destination filesystem has compression enabled and the source filesystem |
| # has a 4K extent at a file offset 0 that is not compressed and that is |
| # shared. |
| # |
| #----------------------------------------------------------------------- |
| # |
| # Copyright (C) 2017 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() |
| { |
| cd / |
| rm -fr $send_files_dir |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _supported_os Linux |
| _require_test |
| _require_scratch |
| _require_scratch_reflink |
| _require_odirect |
| |
| send_files_dir=$TEST_DIR/btrfs-test-$seq |
| |
| rm -f $seqres.full |
| rm -fr $send_files_dir |
| mkdir $send_files_dir |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount "-o compress" |
| |
| # Write to our file using direct IO, so that this way the write ends up not |
| # getting compressed, that is, we get a regular extent which is neither |
| # inlined nor compressed. |
| # Alternatively, we could have mounted the fs without compression enabled, |
| # which would result as well in an uncompressed regular extent. |
| $XFS_IO_PROG -f -d -c "pwrite -S 0xab 0 4K" $SCRATCH_MNT/foobar | _filter_xfs_io |
| |
| $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \ |
| $SCRATCH_MNT/mysnap1 > /dev/null |
| |
| # Clone the regular (not inlined) extent. |
| $XFS_IO_PROG -c "reflink $SCRATCH_MNT/foobar 0 8K 4K" $SCRATCH_MNT/foobar \ |
| | _filter_xfs_io |
| |
| $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \ |
| $SCRATCH_MNT/mysnap2 > /dev/null |
| |
| $BTRFS_UTIL_PROG send -f $send_files_dir/1.snap \ |
| $SCRATCH_MNT/mysnap1 2>&1 >/dev/null | _filter_scratch |
| |
| # Now do an incremental send of the second snapshot. The send stream can have |
| # a clone operation to clone the extent at offset 0 to offset 8K. This operation |
| # would fail on the receiver if it has compression enabled, since the write |
| # operation of the extent at offset 0 was compressed because it was a buffered |
| # write operation, and btrfs' clone implementation does not allow cloning inline |
| # extents to offsets different from 0. |
| $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \ |
| $SCRATCH_MNT/mysnap2 2>&1 >/dev/null | _filter_scratch |
| |
| echo "File digests in the original filesystem:" |
| md5sum $SCRATCH_MNT/mysnap1/foobar | _filter_scratch |
| md5sum $SCRATCH_MNT/mysnap2/foobar | _filter_scratch |
| |
| # Now recreate the filesystem by receiving both send streams and verify we get |
| # the same file content that the original filesystem had. |
| _scratch_unmount |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount "-o compress" |
| |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/1.snap $SCRATCH_MNT > /dev/null |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/2.snap $SCRATCH_MNT > /dev/null |
| |
| echo "File digests in the new filesystem:" |
| md5sum $SCRATCH_MNT/mysnap1/foobar | _filter_scratch |
| md5sum $SCRATCH_MNT/mysnap2/foobar | _filter_scratch |
| |
| status=0 |
| exit |