Create: allow chunksize to be non-power-of-2.

RAID0 has accepted chunksizes that are not a power of 2 since 2.6.30.
So it time mdadm allowed that to be used.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/Build.c b/Build.c
index cb9f01e3..4338e190 100644
--- a/Build.c
+++ b/Build.c
@@ -254,6 +254,10 @@ int Build(char *mddev, int chunk, int level, int layout,
 		if (ioctl(mdfd, RUN_ARRAY, &param)) {
 			fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
 				strerror(errno));
+			if (chunk & (chunk-1)) {
+				fprintf(stderr, "     : Problem may be that chunk size"
+					" is not a power of 2\n");
+			}
 			goto abort;
 		}
 	} else {