To make sure we can test DAX feature on SCRATCH_DEV.

Signed-off-by: Xiong Zhou <xz...@redhat.com>
---
 common/rc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/common/rc b/common/rc
index 892c46e..ea7956b 100644
--- a/common/rc
+++ b/common/rc
@@ -2632,6 +2632,16 @@ _require_scratch_shutdown()
        _scratch_unmount
 }
 
+# Does dax mount option work on this dev/fs?
+_require_scratch_dax()
+{
+       _scratch_unmount
+       _scratch_mkfs > /dev/null 2>&1
+       _scratch_mount -o dax || \
+               _notrun "$SCRATCH_DEV $FSTYP does not support -o dax"
+       _scratch_unmount
+}
+
 # Does norecovery support by this fs?
 _require_norecovery()
 {
-- 
1.8.3.1

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