To support clustered raid10

We are now considering to extend clustered raid to
support raid10. But only near layout is supported,
so make the check when create the array or switch
the bitmap from internal to clustered.

Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/util.c b/util.c
index c11729e..543ec6c 100644
--- a/util.c
+++ b/util.c
@@ -397,6 +397,17 @@ unsigned long long parse_size(char *size)
 	return s;
 }
 
+int is_near_layout_10(int layout)
+{
+	int fc, fo;
+
+	fc = (layout >> 8) & 255;
+	fo = layout & (1 << 16);
+	if (fc > 1 || fo > 0)
+		return 0;
+	return 1;
+}
+
 int parse_layout_10(char *layout)
 {
 	int copies, rv;