When killing the superblock, also clear MBR.
Signed-off-by: Song Liu <songliubraving@xxxxxx>
---
Kill.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/Kill.c b/Kill.c
index f2fdb85..06ced78 100644
--- a/Kill.c
+++ b/Kill.c
@@ -28,6 +28,23 @@
#include "mdadm.h"
#include "md_u.h"
#include "md_p.h"
+#include "part.h"
+
+int KillMBR(int fd)
+{
+ struct MBR *null_mbr;
+
+ null_mbr = xmalloc(sizeof(*null_mbr));
+ memset(null_mbr, 0, sizeof(*null_mbr));
+ lseek(fd, 0, 0);
+ if (write(fd, null_mbr, sizeof(*null_mbr)) != sizeof(*null_mbr)) {
+ free(null_mbr);
+ return 1;
+ }
+ free(null_mbr);
+ fsync(fd);
+ return 0;
+}
int Kill(char *dev, struct supertype *st, int force, int verbose, int noexcl)
{
@@ -76,6 +93,11 @@ int Kill(char *dev, struct supertype *st, int force, int verbose, int noexcl)
rv = 0;
}
}
+
+ if (KillMBR(fd))
+ if (verbose >=0)
+ pr_err("Cannot clear MBR on %s\n", dev);
+
close(fd);
return rv;
}
--
2.4.6
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