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 20/03/2012 16:36, Ian Campbell wrote:
> On Tue, 2012-03-20 at 08:01 +0000, Teo En Ming (Zhang Enming) wrote:
> > On 20/03/2012 15:12, Ian Campbell wrote:
> > > On Tue, 2012-03-20 at 01:11 +0000, Teo En Ming (Zhang Enming) wrote:
> > > [...]
> > > > > 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.
> > > [...]
> > > > I will be attaching my How To / tutorial / documentation shortly.
> > > Please provide exactly and only the information I asked for in my
> > > previous mail (quoted above). Otherwise I cannot help you. I am not
> > > going to try and infer the answers to those questions from a How To.
> > >
> > > Ian.
> > Dear Ian,
> >
> > As I told you before, I cannot start Linux PV guests in Xen
> > 4.2-unstable. There is a bug with xl in Xen 4.2-unstable. However, I am
> > able to start Fedora 16 amd64 PV domU in Xen 4.1.3-rc1-pre.
> >
> > My F16 Linux PV guest configuration file is as follows:
> [...]
>
> Thank you.
>
> > The output of "sudo xl -vvv create -c Fedora16x86_64" is as follows:
> [...]
> > Fedora release 16 (Verne)
> > Kernel 3.2.10-3.fc16.x86_64 on an x86_64 (hvc0)
> >
> > fedora16-x86-64 login:
> >
> > ==============================================================================================================
> >
> > Please look at the screenshot of Fedora 16 x86-64 PV domU as follows:
> >
> > http://i.imgur.com/a2FVr.png
> Both this image and the console output appear to show a guest which has
> booted just fine (e.g. I have quoted the login prompt from your console
> log above). What exactly do you think has not worked?
>
> Ian.
Dear Ian,

I want to make 2 points.

1) Linux PV guests cannot start in Xen 4.2-unstable with XL. Linux PV 
guests can only successfully start in Xen 4.1.3-rc1-pre.
2) The performance of Fedora 16 x86-64 PV guest in Xen 4.1.3-rc1-pre is 
really very poor and sluggish. Do you want to watch a video of it?
Thank you for your understanding.

Yours sincerely,

Teo En Ming (Zhang Enming)



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