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Re: [Xen-devel] trying to debug xen4 & qemu-dm, Xen reports "core dump f

To: 0bo0 <0.bugs.only.0@xxxxxxxxx>
Subject: Re: [Xen-devel] trying to debug xen4 & qemu-dm, Xen reports "core dump failed"
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Wed, 27 Jan 2010 15:46:40 +0000
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On 27/01/2010 15:41, "0bo0" <0.bugs.only.0@xxxxxxxxx> wrote:

> -    bootloader   = '/usr/lib/xen/boot/domUloader.py'
> -    bootargs     = '--entry=xvda1:vmlinuz-xen,/boot/initrd-xen'
> +   kernel       = '/home/xen_store/distros/opensuse112/xenboot/vmlinuz-xen'
> +   ramdisk      = '/home/xen_store/distros/opensuse112/xenboot/initrd-xen'
> 
> still results on the same problem/crash -- as lang as
> 
>     vfb = ['']
> 
> exists.  again, simply removing the vfb spec'n allows the DomU to sanely boot.

Hm, well, can you try stripping your config file right back (but still
specifying vfb=['']) -- like removing all vbds for example? Obviously your
guest will not successfully boot, but qemu-dm crashing is no doubt
preventing your guest from even starting in the first place. So you can
strip back and see whether at any point behaviour changes from 'qemu-dm
crashes' to 'guest partially boots but then fails to find a rootfs'.

 -- Keir



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