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Re: [Xen-devel] vfb console inhibiting Xen console?

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] vfb console inhibiting Xen console?
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Fri, 03 Jul 2009 10:14:53 -0700
Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>
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On 07/03/09 04:38, Stefano Stabellini wrote:
> Yes, you can.
> Check that /local/domain/$DOMID/serial/0/tty exists and contains the
> tty path in dom0.
> If you specify vfb in your config file then qemu provides the console
> backend and creates that node on xenstore that specify the tty device
> path.
> I just tried to start a pv guest with a vfb and didn't have any problem
> connecting to the console, maybe you don't have an updated qemu tree?

I can never tell whether the versions match up or not.  I did a clean
build and it appeared to do some git pulling.

But I just did an specific "git pull" in ioemu-remote, and the behaviour
has changed.  Now with a vfb it seems to hang forever: the domain
appears to boot, but there's no console output, and it doesn't seem to
have brought up its network.  There's nothing on the vfb either. 
/local/domain/$DOMID/serial/0/tty has /dev/pts/1, which the xenconsole
process has open.

If I remove the vfb in the config, it works as expected.


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