Clarify when update=super-minor happens automatcially

[thirdparty/mdadm.git] / Create.c

diff --git a/Create.c b/Create.c
index 75db38235efe647e00b4b8cea99cd2c9075f39a0..2dbc330975dd3a5c24e1a5997a44b226961ca8ad 100644 (file)
--- a/Create.c
+++ b/Create.c
@@ -30,6 +30,7 @@
 #include "mdadm.h"
 #include       "md_u.h"
 #include       "md_p.h"
+#include       <ctype.h>
 
 int Create(struct supertype *st, char *mddev, int mdfd,
           int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
@@ -396,12 +397,25 @@ int Create(struct supertype *st, char *mddev, int mdfd,
 
        if (name == NULL || *name == 0) {
                /* base name on mddev */
+               /*  /dev/md0 -> 0
+                *  /dev/md_d0 -> d0
+                *  /dev/md/1 -> 1
+                *  /dev/md/d1 -> d1
+                *  /dev/md/home -> home
+                *  /dev/mdhome -> home
+                */
                name = strrchr(mddev, '/');
                if (name) {
                        name++;
-                       if (strncmp(name, "md", 2)==0 &&
-                           strlen(name) > 2 &&
+                       if (strncmp(name, "md_d", 4)==0 &&
+                           strlen(name) > 4 &&
+                           isdigit(name[4]) &&
                            (name-mddev) == 5 /* /dev/ */)
+                               name += 3;
+                       else if (strncmp(name, "md", 2)==0 &&
+                                strlen(name) > 2 &&
+                                isdigit(name[2]) &&
+                                (name-mddev) == 5 /* /dev/ */)
                                name += 2;
                }
        }