[CentOS-virt] Xen HVM domU won't start since updates to 2.6.18-164.15.1 kernels

Mon Mar 29 12:18:29 UTC 2010
Sergio Charpinel Jr. <sergiocharpinel at gmail.com>

- Try to unset any graphical option and run the domU, maybe its
missing some lib, like sdl. I don't know how to do it in virsh,
because in xen cfg, default vnc option is 1.

- Check paths to hvmloader, qemu-dm

- post more log files, if you have.

2010/3/29 Pasi Kärkkäinen <pasik at iki.fi>

> On Sun, Mar 28, 2010 at 06:39:01PM -0400, Aaron Clark wrote:
> > On 03/28/2010 03:36 PM, Pasi Kärkkäinen wrote:
> > > On Sun, Mar 28, 2010 at 12:45:58PM -0400, Aaron Clark wrote:
> > >>
> > >> Ok, I've tried the following now:
> > >>
> > >> - rebooted the dom0 into the previous, working kernel-xen and start
> domU
> > >> (doesn't work)
> > >> - while in the old kernel-xen, switch the grub config for the domU to
> > >> use the old kernel then try to start the domU (doesn't work)
> > >> - remove the vnc lines from the guest's config via virsh edit and
> > >> attempt to start (doesn't work)
> > >>
> > >> I do not have any serial console stuff set up, so I'll need a little
> bit
> > >> more detailed instructions to get that working (which files I need to
> > >> modify on guest and host, what to put where, etc).
> > >>
> > >
> > > You don't need a serial console to see the _guest_ kernel boot
> messages.
> > > You just disable vfb (graphical console) from the guest, and then the
> > > guest kernel messages will automatically go to the Xen text console:
> > >
> > > You can see the full guest kernel boot messages like this:
> > >
> > > xm create -f /etc/xen/<guest>  -c
> > >
> > > Edit the /etc/xen/<guest>  cfgfile first, and remove the vfb line to
> disable graphical console.
> > >
> >
> > I removed the vfb line from the /etc/xen/<guest> file... still doesn't
> > start and the console does not attach.
> >
> > [root at Yggdrasil ~]# xm create -f /etc/xen/Belldandy -c
> > Using config file "/etc/xen/Belldandy".
> > Started domain Belldandy
> > xenconsole: Could not read tty from store: No such file or directory
> >
>
> Hmm.. only now I notice you're trying to start a HVM guest.
> HVM guests will pretty much require graphical console..
>
> Sorry for the wrong tips. The stuff I wrote was for PV guests.
>
> -- Pasi
>
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-- 
Sergio Roberto Charpinel Jr.
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