have raid1 check chunk size in run method instead of in md
raid1.c | 9 +++++++++
1 file changed, 9 insertions(+)
Signed-off-by: raziebe@xxxxxxxxx
---
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 2c8d9e6..8609506 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1942,6 +1942,15 @@ static int run(mddev_t *mddev)
mdname(mddev), mddev->level);
goto out;
}
+ /*
+ * chunk-size has to be a power of 2
+ */
+ if ((1 << ffz(~mddev->chunk_size)) != mddev->chunk_size) {
+ printk(KERN_ERR "%s chunk_size of %d not valid\n",
+ mdname(mddev),
+ mddev->chunk_size);
+ return -EINVAL;
+ }
if (mddev->reshape_position != MaxSector) {
printk("raid1: %s: reshape_position set but not supported\n",
mdname(mddev));
--
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