[Xen-users] Strange interaction from grub2 and XEN

[Marco Nenciarini <mnencia@xxxxxxxxxxxxxx>]

I'm testing how xen and grub2 can work together.

I'm using xen 3.4.2 and grub2 1.97+20091115-1 from debian sid.

After many failed attempts I've discovered that on my system the first 
argument that grub2 should pass to the linux kernel is lost.
This is my working grub2 configuration:

menuentry "Xen 3.4.0 / Debian GNU/Linux, Linux 2.6.31-1-xen-amd64" {
    insmod xfs
    set root=(hd0,2)
    multiboot /boot/xen-3.4-amd64.gz
    module /boot/vmlinuz-2.6.31-1-xen-amd64 dummy=dummy 
root=UUID=e9ed5af4-0503-4314-9d28-415a0eb7b0a0 ro quiet
    module /boot/initrd.img-2.6.31-1-xen-amd64
}

Looking in /proc/cmdline, there isn't any dummy=dummy argument

mnencia@manwe:/tmp$ cat /proc/cmdline
root=UUID=e9ed5af4-0503-4314-9d28-415a0eb7b0a0 ro quiet

Before the addition of dummy=dummy in front of line, the missing 
argument was the root=*, so my initrd had no idea of which root it have 
to mount.
BTW, the problem happens with both oldschool kernels and pvops ones.

I've googled around a bit, but I haven't found anything about this issue.

Kind regards,
Marco

--
---------------------------------------------------------------------
|    Marco Nenciarini    | Debian/GNU Linux Developer - Plug Member |
| mnencia@xxxxxxxxxxxxxx | http://www.prato.linux.it/~mnencia       |
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