I filed this patch against the Debian grub2 package and the maintainer asked me to bring it to [EMAIL PROTECTED] Took me an age but here I am ;-) [resending now I'm subscribed].
Back then I said:
> The grub package does not currently support installation in a Xen
> guest domain because it does not understand the Xen virtual block
> devices (/dev/xvd[a-z]).
>
> This support is mainly useful because it allows the Debian installer to
> work in a Xen guest without Xen specific workarounds.
>
> It might also be useful for someone who wanted to switch between
> a guest between para-virtual and fully-virtualised (HVM) operation.
Patch is attached.
Ian.
--
Ian Campbell
Current Noise: Strapping Young Lad - Antiproduct
The Public is merely a multiplied "me."
-- Mark Twain
Index: grub2-1.95+20071101/util/biosdisk.c
===================================================================
--- grub2-1.95+20071101.orig/util/biosdisk.c 2007-12-16 16:41:43.000000000 +0000
+++ grub2-1.95+20071101/util/biosdisk.c 2007-12-16 16:42:29.000000000 +0000
@@ -640,6 +640,13 @@
return path;
}
+ if ((strncmp ("xvd", p, 3) == 0) && p[3] >= 'a' && p[3] <= 'z')
+ {
+ /* /dev/xvd[a-z][0-9]* */
+ p[4] = '\0';
+ return path;
+ }
+
/* If this is an IDE disk or a SCSI disk. */
if ((strncmp ("hd", p, 2) == 0
|| strncmp ("sd", p, 2) == 0)
Index: grub2-1.95+20071101/util/grub-mkdevicemap.c
===================================================================
--- grub2-1.95+20071101.orig/util/grub-mkdevicemap.c 2007-12-16 16:41:43.000000000 +0000
+++ grub2-1.95+20071101/util/grub-mkdevicemap.c 2007-12-16 16:49:22.000000000 +0000
@@ -273,6 +273,13 @@
{
sprintf (name, "/dev/i2o/hd%c", unit);
}
+
+static void
+get_xvd_disk_name (char *name, int unit)
+{
+ sprintf (name, "/dev/xvd%c", unit + 'a');
+}
+
#endif
/* Check if DEVICE can be read. If an error occurs, return zero,
@@ -515,6 +522,24 @@
}
#endif /* __linux__ */
+#ifdef __linux__
+ /* Xen Virtual Disks. */
+ for (i = 0; i < 16; i++)
+ {
+ char name[16];
+
+ get_xvd_disk_name (name, i);
+ 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
+
finish:
if (fp != stdout)
fclose (fp);
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