Bug#442382: Ported to grub-mkdevicemap

[Otavio Salvador]

Hello,

I can't test it but I believe I've ported it. Can someone give it a
try?

--- grub2-1.96+20080724/util/grub-mkdevicemap.c 2008-06-04 08:20:36.000000000 -0300
+++ grub2-1.96+20080724-mpath/util/grub-mkdevicemap.c   2009-01-31 18:45:37.000000000 -0200
@@ -313,6 +313,12 @@
 {
   sprintf (name, "/dev/xvd%c", unit + 'a');
 }
+
+static void
+get_mpath_disk_name (char *name, int path)
+{
+  sprintf (name, "/dev/mapper/mpath%d", path);
+}
 #endif
 
 /* Check if DEVICE can be read. If an error occurs, return zero,
@@ -520,6 +526,28 @@
          num_hd++;
        }
     }
+
+  /* Multipath devices with userfriendly_names=yes and the default
+     udev rules: /dev/mapper/mpath<path>-part<partition> */
+  {
+    int path;
+    
+    for (path= 0; path < 9; path++)
+      {
+        char name[24];
+        
+        get_mpath_disk_name (name, path);
+        if (check_device (name))
+          {
+                       char *p;
+                       p = grub_util_get_disk_name (num_hd, name);
+                       fprintf (fp, "(%s)\t%s\n", p, name);
+                       free (p);
+                       num_hd++;
+          }
+      }
+  }
+
 #endif /* __linux__ */
 
   /* The rest is SCSI disks.  */

-- 
        O T A V I O    S A L V A D O R
---------------------------------------------
 E-mail: otavio at debian.org      UIN: 5906116
 GNU/Linux User: 239058     GPG ID: 49A5F855
 Home Page: http://otavio.ossystems.com.br
---------------------------------------------
"Microsoft sells you Windows ... Linux gives
 you the whole house."