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

On Tue, Mar 23, 2010 at 04:24:43PM -0700, Andrew Evans wrote:
> 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.

When it also happens with the vanilla EL5 stuff, it might be worth opening a bug
in redhat's bugzilla, and put all the details there.

-- Pasi

> 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.
> -Andrew

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