# \[PATCH\] mdadm:it doesn't make sense to set --bitmap twice

- From: Zhilong Liu \<hidden\>
- Date: 2017-03-20 05:21:03 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2017/03/6634870
- Thread: https://ratatoskr.run/linux-raid/2017/03/6634870/t.md

```text
mdadm.c: it doesn't make sense to set --bitmap twice.

Signed-off-by: Zhilong Liu <redacted>
---
 mdadm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mdadm.c b/mdadm.c
index 566051f..2d8498f 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -1145,6 +1145,10 @@ int main(int argc, char *argv[])
 		case O(CREATE,Bitmap): /* here we create the bitmap */
 		case O(GROW,'b'):
 		case O(GROW,Bitmap):
+			if (s.bitmap_file) {
+				pr_err("bitmap cannot be set twice. Second value: %s.\n", optarg);
+				exit(2);
+			}
 			if (strcmp(optarg, "internal") == 0 ||
 			    strcmp(optarg, "none") == 0 ||
 			    strchr(optarg, '/') != NULL) {
-- 
2.6.6

```