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Re: [Xen-users] How to move from pygrub to pv-grub?

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Todd Deshane" <deshantm@xxxxxxxxx>
  • Date: Sun, 21 Dec 2008 18:50:29 -0500
  • Delivery-date: Sun, 21 Dec 2008 15:51:06 -0800
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

On Sun, Dec 21, 2008 at 6:35 PM, Kai Schaetzl <maillists@xxxxxxxxxxxxx> wrote:
> Todd Deshane wrote on Sun, 21 Dec 2008 17:40:31 -0500:
>> For some reason that thread is broken on the xensource server:
>> (a good place to check is xen.markmail.org)
>> This might be the key bit of info you are missing:
>> http://lists.xensource.com/archives/html/xen-devel/2008-08/msg01083.html
> Thanks for the pointer, but I definitely read each single message that's
> shown on that starter page, including the two "subthreads". And I read
> this specific one, yes. The point is that I started by adding kernel, then
> extra, then root. Eacht time with the same effect of grubdom. So, removing
> root wouldn't make a difference. As I see you were able to get the system
> booting by giving it the correct parameters. But that's impossible here as
> it complains about the partition table. So, this must be something very
> different.
> What partition table does it mean? This is not an xvda-encapsulated drive,
> this is a normal ext3 formatted LVM partition. There's no MBR and no
> partition table on it. What partition table where does pv-grub expect?

I would image that it works very much the same (with some limitations
pointed out by Samuel in that thread and others) as GRUB.

Can you test on a disk or disk image just to see if you can get a working
case (not on a partition)?

I think you would need some sort of MBR or similar, but I don't know
nor recall the details. Xen-devel/Samuel may be able to give you
better answers if you don't get answers on xen-users.

>> There may also be some patches that you need that happened after
>> the 3.3 release, but one step at a time I guess.
> Don't make me cry ;-) I really don't want to build my own Xen stuff. If
> that's what is needed to get pv-grub going I just stick with pygrub as it
> is working perfectly :-) However, I would assume that pv-grub in a major
> release like 3.3 won't have such a big bug that it doesn't work at all.

I don't remember if there is a fatal issue or not. 3.3.1 is due out around
the end of the month too.


Todd Deshane

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