Re: [Xen-users] [Xen-devel] Cannot Start Linux Paravirtualized (PV) Guests with Xen 4.2-unstable

["Teo En Ming (Zhang Enming)" <singapore.mr.teo.en.ming@xxxxxxxxx>]

On 19/03/2012 21:59, Ian Campbell wrote:
> On Mon, 2012-03-19 at 10:09 +0000, Teo En Ming (Zhang Enming) wrote:
> > I have found a bug with xl in Xen 4.2-unstable changeset 25070.
> >
> > When I try to start Linux paravirtualized guests in Xen 4.2-unstable,
> > they CANNOT start at all and exit IMMEDIATELY.
> I have looked at your original mails and there are many different
> configuration snippets and so it is not 100% clear to me what you are
> actually running to provoke this error. Also you provided all of the
> logs from under /var/log/xen but it is not clear which ones correspond
> to the occasion when you saw the failure (many of those logs are rotated
> logs from previous xl invocations).
>
> Please can you provide a single guest configuration file which
> demonstrates the issue which you are seeing and the output of running
> "xl -vvv create -c<cfg>" for that precisely that<cfg>  file. Please
> also attach exactly the /var/log/xen/qemu-dm-<name>.log
> and /var/log/xen/xl-<name>.log produced by exactly that invocation of
> xl.
>
> > When I switched to Xen 4.1.3-rc1-pre, Linux PV guests start
> > successfully, albeit with a change to the disk parameter in the xl
> > configuration file.
> What change did you have to make?
>
> Ian.
Dear Ian,

This is a bug with xl in Xen 4.2-unstable.

1. Linux PV guests cannot start in Xen 4.2-unstable changeset 25070 at all.

2. When I switch over to Xen 4.1.3-rc1-pre, Linux PV guests start 
successfully. I merely changed the disk = [ ' ' ] parameter because the 
configuration syntax is slightly different between Xen 4.1.x and Xen 
4.2-unstable.
I will be attaching my How To / tutorial / documentation shortly.

Please take note of this bug in xen-unstable.hg.

Thank you very much.

Yours sincerely,

Teo En Ming (Zhang Enming)

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