PATCH 3/3 V6] xfs: test changing UUID on V5 superblock

Tests xfs_db's ability to change & restore UUIDs on V5 filesystems,
and tests xfs_copy's ability to change the UUID on the copy.

Update to _filter_uuid is so that it will catch the UUID output
from xfs_admin -u, which is slightly different than the regexp it
was expecting.

This requires new userspace which knows how to change the UUID on
a V5 superblock.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

common/filter

@@ -275,9 +275,9 @@ _filter_uuid()
 {
 	if [ ! -z $1 ]; then
 		UUID=$1
-		sed -e "s/\(uuid:\) $UUID/\1 <EXACTUUID>/i"
+		sed -e "s/\(uuid[ :=]\+\) $UUID/\1 <EXACTUUID>/i"
 	else
-		sed -e "s/\(uuid:\) *[0-9a-f-][0-9a-f-]*/\1 <UUID>/i"
+		sed -e "s/\(uuid[ :=]\+\) *[0-9a-f-][0-9a-f-]*/\1 <UUID>/ig"
 	fi
 }
 

common/rc

@@ -2714,6 +2714,21 @@ _require_test_fcntl_advisory_locks()
 		_notrun "Require fcntl advisory locks support"
 }
 
+# XFS ability to change UUIDs on V5/CRC filesystems
+#
+_require_meta_uuid()
+{
+	# This will create a crc fs on $SCRATCH_DEV
+	_require_xfs_crc
+
+	$XFS_DB_PROG -x -c "uuid generate" $SCRATCH_DEV >/dev/null 2>&1 \
+	   || _notrun "Userspace doesn't support meta_uuid feature"
+
+	_scratch_mount >/dev/null 2>&1 \
+	   || _notrun "Kernel doesn't support meta_uuid feature"
+	umount $SCRATCH_MNT
+}
+
 _get_total_inode()
 {
 	if [ -z "$1" ]; then