new file mode 100755
@@ -0,0 +1,120 @@
+#! /bin/bash
+# FS QA Test No. btrfs/108
+#
+# Test that sending and receiving snapshots across different filesystems works
+# for full and incremental send operations.
+#
+#-----------------------------------------------------------------------
+# Copyright (C) 2015 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 $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+_need_to_be_root
+
+send_files_dir=$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
+
+# Create a test file
+$XFS_IO_PROG -f -c "pwrite -S 0xaa 0K 32K" $SCRATCH_MNT/foo | _filter_xfs_io
+
+# Create the first snapshot.
+_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/snap1
+
+echo "File digest in the first filesystem, first snapshot:"
+md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch
+
+# Save send stream for this snapshot.
+_run_btrfs_util_prog send $SCRATCH_MNT/snap1 -f $send_files_dir/1.snap
+
+# Create a new filesystem and receive the snapshot.
+_scratch_unmount
+_scratch_mkfs >>$seqres.full 2>&1
+_scratch_mount
+
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/1.snap
+
+echo "File digest in the second filesystem, first snapshot:"
+# Must match the digest we got in the first filesystem.
+md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch
+
+# Snapshot the first snapshot as rw, modify this new snapshot and then snapshot
+# it as RO to use in a send operation (send requires RO snapshots).
+_run_btrfs_util_prog subvolume snapshot $SCRATCH_MNT/snap1 $SCRATCH_MNT/snap2_rw
+
+$XFS_IO_PROG -c "pwrite -S 0xbb 4K 4K" \
+ $SCRATCH_MNT/snap2_rw/foo | _filter_xfs_io
+
+_run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT/snap2_rw \
+ $SCRATCH_MNT/snap2
+
+echo "File digest in the second filesystem, second snapshot:"
+md5sum $SCRATCH_MNT/snap2/foo | _filter_scratch
+
+_run_btrfs_util_prog send -p $SCRATCH_MNT/snap1 $SCRATCH_MNT/snap2 \
+ -f $send_files_dir/2.snap
+
+# Create a new filesystem and receive both the first snapshot, through the first
+# send stream we created, and the second snapshot through the incremental send
+# stream we just created. Verify this works and the file data is correct in both
+# snapshots.
+_scratch_unmount
+_scratch_mkfs >>$seqres.full 2>&1
+_scratch_mount
+
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/1.snap
+# Receiving the second snapshot used to fail because the send stream used an
+# incorrect value for the clone sources uuid field - it used the uuid of
+# snapshot 1, which is different on each filesystem, instead of the received
+# uuid value, which is preserved across different filesystems.
+_run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/2.snap
+
+echo "File digests in the third filesystem:"
+# Must match the digests we got in the previous filesystems.
+md5sum $SCRATCH_MNT/snap1/foo | _filter_scratch
+md5sum $SCRATCH_MNT/snap2/foo | _filter_scratch
+
+status=0
+exit
new file mode 100644
@@ -0,0 +1,14 @@
+QA output created by 108
+wrote 32768/32768 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+File digest in the first filesystem, first snapshot:
+c28418534a020122aca59fd3ff9581b5 SCRATCH_MNT/snap1/foo
+File digest in the second filesystem, first snapshot:
+c28418534a020122aca59fd3ff9581b5 SCRATCH_MNT/snap1/foo
+wrote 4096/4096 bytes at offset 4096
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+File digest in the second filesystem, second snapshot:
+b93cf657bd4e3fa6f6a7f3d1142fd691 SCRATCH_MNT/snap2/foo
+File digests in the third filesystem:
+c28418534a020122aca59fd3ff9581b5 SCRATCH_MNT/snap1/foo
+b93cf657bd4e3fa6f6a7f3d1142fd691 SCRATCH_MNT/snap2/foo
@@ -110,3 +110,4 @@
105 auto quick clone compress
106 auto quick send clone
107 auto quick send clone compress
+108 auto quick send