[PATCH 2/2] btrfs-progs: tests: return metadata_uuid or fsid as per METADATA_UUID flag

[Anand Jain <anand.jain@oracle.com>]

Commit
  btrfs-progs: dump-super print actual metadata_uuid value

fixed the value of the super_block::metadata_uuid to be printed as it
is, without tweaking it depending on the METADATA_UUID flag.

Apply similar counter tweak in the common helper functions used to read
the metadata_uuid so that test-cases still be successful.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 tests/misc-tests/034-metadata-uuid/test.sh | 24 +++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/tests/misc-tests/034-metadata-uuid/test.sh b/tests/misc-tests/034-metadata-uuid/test.sh
index 77a310d54f0f..dba31db90368 100755
--- a/tests/misc-tests/034-metadata-uuid/test.sh
+++ b/tests/misc-tests/034-metadata-uuid/test.sh
@@ -15,6 +15,19 @@ if [ ! -f /sys/fs/btrfs/features/metadata_uuid ] ; then
 	_not_run "METADATA_UUID feature not supported"
 fi
 
+has_metadata_uuid_flag() {
+	local dev="$1"
+
+	run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal \
+		dump-super "$dev" | egrep -q METADATA_UUID
+
+	if [ $? -eq 0 ]; then
+		echo true
+	else
+		echo false
+	fi
+}
+
 read_fsid() {
 	local dev="$1"
 
@@ -24,9 +37,14 @@ read_fsid() {
 
 read_metadata_uuid() {
 	local dev="$1"
-
-	echo $(run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal \
-		dump-super "$dev" | awk '/metadata_uuid/ {print $2}')
+	local flag=$(has_metadata_uuid_flag $dev)
+
+	if [ "$flag" == "true" ]; then
+		echo $(run_check_stdout $SUDO_HELPER "$TOP/btrfs" inspect-internal \
+			dump-super "$dev" | awk '/metadata_uuid/ {print $2}')
+	else
+		read_fsid $dev
+	fi
 }
 
 check_btrfstune() {
-- 
2.39.3