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Re: [Xen-users] xen.org dom0 kernel w/RHEL 5 PV on HVM guests

  • To: Pasi Kärkkäinen <pasik@xxxxxx>
  • From: Andrew Evans <andrewe@xxxxxxxxxxxxx>
  • Date: Tue, 23 Mar 2010 16:24:43 -0700
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 23 Mar 2010 16:25:55 -0700
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On 03/22/10 12:54, Pasi Kärkkäinen wrote:
> Are you sure you got the earlier xen 3.4.x stuff completely removed?
> Did you also make sure virt-manager, libvirt, virsh etc were downgraded 
> to the RHEL5 default versions?

You were right again. libvirt-0.7.2 built against Xen 3.3.1 was
preventing the RHEL 5 Xen 3.1.2 xend from working.

> Dunno if the xml configuration created with newer libvirt is still compatible 
> with the older libvirt/xen..

That was also a problem. I had to add a <uuid> tag as libvirt wouldn't
generate one by default, and a <console> tag to get access to the serial
console again.

So...after all that, same problem: the domU fails to find the root
filesystem, just as with the gitco xen-3.4.2 RPMs. If I omit
'hda=noprobe' from the kernel command line, the domU boots, using
/dev/hd* via the ide-disk driver. I can then mount the virtual disks via
/dev/xvd*, so at that point xen-vbd is working.

I'm going to put this aside for now. I'll hopefully be trying a pv_ops
dom0 kernel soon. Hopefully I can get a RHEL 5 domU to boot from
/dev/xvd* with that setup.

Thanks for all your help.


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