---
 Incremental.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

--- mdadm-3.2.6.orig/Incremental.c
+++ mdadm-3.2.6/Incremental.c
@@ -279,6 +279,21 @@ int Incremental(char *devname, int verbo
 	if (map_lock(&map))
 		fprintf(stderr, Name ": failed to get exclusive lock on "
 			"mapfile\n");
+
+	/* Now that we have the lock, we should recheck exclusive access,
+	 * and remove partitions.
+	 */
+	dfd = dev_open(devname, O_RDONLY|O_EXCL);
+	if (dfd < 0) {
+		if (verbose >= 0)
+			fprintf(stderr, Name ": cannot reopen %s: %s.\n",
+				devname, strerror(errno));
+		goto out_unlock;
+	}
+	remove_partitions(dfd);
+	close(dfd);
+	dfd = -1;
+
 	mp = map_by_uuid(&map, info.uuid);
 	if (mp)
 		mdfd = open_dev(mp->devnum);