--- mdadm-4.0/super1.c	2017-01-09 22:46:34.000000000 +0100
+++ src/super1.c	2018-10-08 18:39:20.105739318 +0200
@@ -1438,6 +1438,7 @@
 		sprintf(defname, "%d", info->md_minor);
 		name = defname;
 	}
+#if 0
 	if (homehost &&
 	    strchr(name, ':')== NULL &&
 	    strlen(homehost)+1+strlen(name) < 32) {
@@ -1445,6 +1446,7 @@
 		strcat(sb->set_name, ":");
 		strcat(sb->set_name, name);
 	} else
+#endif
 		strncpy(sb->set_name, name, sizeof(sb->set_name));
 
 	sb->ctime = __cpu_to_le64((unsigned long long)time(0));