Re: [Xen-users] "update-grub" adds line to "multiboot"

[Todd Deshane <todd.deshane@xxxxxxx>]

On Tue, Aug 30, 2011 at 2:54 PM, MisterE <MisterE2002@xxxxxxxxx> wrote:
> Hello Xen folks,
>
> I use Debian Squeeze. I want to passthrough PCI devices.
> With the old stable Debian (grub legacy) i did not have problems.
>
> I edit /etc/default/grub like:
>    quote:
>    GRUB_CMDLINE_XEN_DEFAULT="quiet xen-pciback.permissive 
> xen-pciback.hide=(00:14.2)(01:05.1)"
>
>
> I run "update-grub". Now i look at /boot/grub/grub.cfg:
>
>
>    ### BEGIN /etc/grub.d/20_linux_xen ###
>    menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-xen-amd64 and XEN 
> 4.0-amd64' --class debian --class gnu-linux --class gnu --class os --class 
> xen {
>    insmod part_msdos
>    insmod ext2
>    set root='(hd0,msdos1)'
>    search --no-floppy --fs-uuid --set 5a097ed6-415b-45ff-bba7-d628c92b1f7a
>    echo 'Loading Linux 2.6.32-5-xen-amd64 ...'
>    multiboot /xen-4.0-amd64.gz placeholder quiet xen-pciback.permissive 
> xen-pciback.hide=(00:14.2)(01:05.1)
>    module /vmlinuz-2.6.32-5-xen-amd64 placeholder 
> root=/dev/mapper/vg_dom0-lv_root ro quiet
>    echo 'Loading initial ramdisk ...'
>    module /initrd.img-2.6.32-5-xen-amd64
>    }
>
>
> The "pciback" command is at the "multiboot" line. This does not work? It does 
> not seize the device after a reboot.
>
> If i use:
>    quote:
>    GRUB_CMDLINE_LINUX_DEFAULT="quiet xen-pciback.permissive 
> xen-pciback.hide=(00:14.2)(01:05.1)"
>
>
> The result is:
>    ### BEGIN /etc/grub.d/20_linux_xen ###
>    menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-xen-amd64 and XEN 
> 4.0-amd64' --class debian --class gnu-linux --class gnu --class os --class 
> xen {
>    insmod part_msdos
>    insmod ext2
>    set root='(hd0,msdos1)'
>    search --no-floppy --fs-uuid --set 5a097ed6-415b-45ff-bba7-d628c92b1f7a
>    echo 'Loading Linux 2.6.32-5-xen-amd64 ...'
>    multiboot /xen-4.0-amd64.gz placeholder
>    module /vmlinuz-2.6.32-5-xen-amd64 placeholder 
> root=/dev/mapper/vg_dom0-lv_root ro quiet xen-pciback.permissive 
> xen-pciback.hide=(00:14.2)(01:05.1)
>    echo 'Loading initial ramdisk ...'
>    module /initrd.img-2.6.32-5-xen-amd64
>    }
>
>
>
> Now the "pciback" command is at the "module" line and the device is actually 
> seized. The problem is that is added to all linux kernels and not only the 
> Xen kernel.
>

This is more of a bug against the packaging of grub2 support for Xen
in Debian. You should file a bug with Debian.

Thanks,
Todd


-- 
Todd Deshane
http://www.linkedin.com/in/deshantm
http://www.xen.org/products/cloudxen.html
http://runningxen.com/

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