xfs/realtime: Add require_no_realtime function

Some tests do not play well with realtime devices, in an effort to
produce a stable set of test which exercise the realtime code paths
we introduce a _require_no_realtime function to allow tests to opt
out of realtime subvolume test runs.

And to make tests generic/409-411 work well with rt device, teach
_get_mount now honors $SCRATCH_OPTIONS.

Signed-off-by: Richard Wareing <rwareing@fb.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>

common/rc

@@ -200,8 +200,14 @@ _mount()
 _get_mount()
 {
 	local mnt_point=${!#}
+	local mnt_dev=${@:(-2):1}
+	local scratch_opts=""
+	if [ "$mnt_dev" = "$SCRATCH_DEV" ]; then
+		_scratch_options mount
+		scratch_opts="$SCRATCH_OPTIONS"
+	fi
 
-	_mount $*
+	_mount $scratch_opts $*
 	if [ $? -eq 0 ]; then
 		MOUNTED_POINT_STACK="$mnt_point $MOUNTED_POINT_STACK"
 	else
@@ -232,7 +238,7 @@ _clear_mount_stack()
 
 _scratch_options()
 {
-    type=$1
+    local type=$1
     SCRATCH_OPTIONS=""
 
     if [ "$FSTYP" != "xfs" ]; then
@@ -1761,6 +1767,14 @@ _require_realtime()
 	_notrun "Realtime device required, skipped this test"
 }
 
+# This test requires that a realtime subvolume is not in use
+#
+_require_no_realtime()
+{
+	[ "$USE_EXTERNAL" = "yes" ] && [ -n "$SCRATCH_RTDEV" ] && \
+		_notrun "Test not compatible with realtime subvolumes, skipped this test"
+}
+
 # this test requires that a specified command (executable) exists
 # $1 - command, $2 - name for error message
 #

tests/xfs/077

@@ -50,6 +50,8 @@ _cleanup()
 
 _supported_fs xfs
 _supported_os Linux
+# xfs_copy does not support realtime devices
+_require_no_realtime
 _require_scratch
 _require_xfs_crc
 _require_meta_uuid

tests/xfs/189

@@ -236,6 +236,7 @@ _putback_scratch_fstab()
 _supported_fs xfs
 _supported_os Linux
 
+_require_no_realtime
 _require_scratch
 _require_noattr2
 

tests/xfs/284

@@ -49,6 +49,8 @@ rm -f $seqres.full
 # real QA test starts here
 _supported_fs xfs
 _supported_os Linux
+# xfs_copy does not support realtime devices
+_require_no_realtime
 _require_test
 _require_scratch