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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2017 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. btrfs/137
#
# Test that both incremental and full send operations preserve file holes.
#
. ./common/preamble
_begin_fstest auto quick send fiemap
# Override the default cleanup function.
_cleanup()
{
cd /
rm -fr $send_files_dir
rm -f $tmp.*
}
. ./common/filter
. ./common/punch
_supported_fs btrfs
_require_test
_require_scratch
_require_xfs_io_command "fiemap"
send_files_dir=$TEST_DIR/btrfs-test-$seq
rm -fr $send_files_dir
mkdir $send_files_dir
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
# Create the first test file.
$XFS_IO_PROG -f -c "pwrite -S 0xaa 0 4K" $SCRATCH_MNT/foo | _filter_xfs_io
# Create a second test file with a 1Mb hole.
$XFS_IO_PROG -f \
-c "pwrite -S 0xaa 0 4K" \
-c "pwrite -S 0xbb 1028K 4K" \
$SCRATCH_MNT/bar | _filter_xfs_io
$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
$SCRATCH_MNT/snap1 >/dev/null
# Now add one new extent to our first test file, increasing its size and leaving
# a 1Mb hole between the first extent and this new extent.
$XFS_IO_PROG -c "pwrite -S 0xbb 1028K 4K" $SCRATCH_MNT/foo | _filter_xfs_io
# Now overwrite the last extent of our second test file.
$XFS_IO_PROG -c "pwrite -S 0xcc 1028K 4K" $SCRATCH_MNT/bar | _filter_xfs_io
$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \
$SCRATCH_MNT/snap2 >/dev/null
echo
echo "File digests in the original filesystem:"
md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch
md5sum $SCRATCH_MNT/snap1/bar | _filter_scratch
md5sum $SCRATCH_MNT/snap2/foo | _filter_scratch
md5sum $SCRATCH_MNT/snap2/bar | _filter_scratch
echo
echo "File snap1/foo fiemap results in the original filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/foo | _filter_fiemap
echo
echo "File snap1/bar fiemap results in the original filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/bar | _filter_fiemap
echo
echo "File snap2/foo fiemap results in the original filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/foo | _filter_fiemap
echo
echo "File snap2/bar fiemap results in the original filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/bar | _filter_fiemap
echo
# Create the send streams to apply later on a new filesystem.
$BTRFS_UTIL_PROG send -f $send_files_dir/1.snap $SCRATCH_MNT/snap1 2>&1 \
| _filter_scratch
$BTRFS_UTIL_PROG send -p $SCRATCH_MNT/snap1 -f $send_files_dir/2.snap \
$SCRATCH_MNT/snap2 2>&1 | _filter_scratch
# Create a new filesystem, receive the send streams and verify that the file
# contents are the same as in the original filesystem and that the file holes
# exists in both snapshots.
_scratch_unmount
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
$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
echo "File digests in the new filesystem:"
md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch
md5sum $SCRATCH_MNT/snap1/bar | _filter_scratch
md5sum $SCRATCH_MNT/snap2/foo | _filter_scratch
md5sum $SCRATCH_MNT/snap2/bar | _filter_scratch
echo
echo "File snap1/foo fiemap results in the new filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/foo | _filter_fiemap
echo
echo "File snap1/bar fiemap results in the new filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap1/bar | _filter_fiemap
echo
echo "File snap2/foo fiemap results in the new filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/foo | _filter_fiemap
echo
echo "File snap2/bar fiemap results in the new filesystem:"
$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap2/bar | _filter_fiemap
status=0
exit
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