| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # 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 an extent at a file offset 0 that is not compressed and that is |
| # shared. |
| # |
| 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 $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/reflink |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _require_test |
| _require_scratch |
| _require_scratch_reflink |
| _require_odirect |
| _require_btrfs_command inspect-internal dump-super |
| |
| send_files_dir=$TEST_DIR/btrfs-test-$seq |
| |
| rm -f $seqres.full |
| rm -fr $send_files_dir |
| mkdir $send_files_dir |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| # On 64K pagesize systems the compression is more efficient, so max_inline |
| # helps to create regular (non inline) extent irrespective of the final |
| # write size. |
| _scratch_mount "-o compress -o max_inline=0" |
| |
| # 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. |
| sectorsize=$(_scratch_btrfs_sectorsize) |
| $XFS_IO_PROG -f -d -c "pwrite -S 0xab 0 $sectorsize" $SCRATCH_MNT/foobar |\ |
| _filter_xfs_io_numbers |
| |
| $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 $((2 * $sectorsize)) $sectorsize" \ |
| $SCRATCH_MNT/foobar | _filter_xfs_io_numbers |
| |
| $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 (2 x sectorsize). |
| # 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 \ |
| $SCRATCH_MNT/mysnap2 2>&1 >/dev/null | _filter_scratch |
| |
| sum_src_snap1=$(md5sum $SCRATCH_MNT/mysnap1/foobar | awk '{print $1}') |
| sum_src_snap2=$(md5sum $SCRATCH_MNT/mysnap2/foobar | awk '{print $1}') |
| echo "File digests in the original filesystem:" >> $seqres.full |
| echo "md5sum $SCRATCH_MNT/mysnap1/foobar " $sum_src_snap1 >> $seqres.full |
| echo "md5sum $SCRATCH_MNT/mysnap2/foobar " $sum_src_snap2 >> $seqres.full |
| |
| # Now recreate the filesystem by receiving both send streams and verify we get |
| # the same file content that the original filesystem had. |
| _scratch_unmount |
| _scratch_mkfs >>$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 $SCRATCH_MNT > /dev/null |
| |
| sum_dest_snap1=$(md5sum $SCRATCH_MNT/mysnap1/foobar | awk '{print $1}') |
| sum_dest_snap2=$(md5sum $SCRATCH_MNT/mysnap2/foobar | awk '{print $1}') |
| echo "File digests in the new filesystem:" | tee -a $seqres.full |
| echo "md5sum $SCRATCH_MNT/mysnap1/foobar " $sum_src_snap1 >> $seqres.full |
| echo "md5sum $SCRATCH_MNT/mysnap2/foobar " $sum_src_snap2 >> $seqres.full |
| |
| [[ $sum_src_snap1 == $sum_dest_snap1 ]] && echo "src and dest 'mysnap1' checksum matched" |
| [[ $sum_src_snap2 == $sum_dest_snap2 ]] && echo "src and dest 'mysnap2' checksum matched" |
| |
| status=0 |
| exit |