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Re: [libvirt] qemu error: "fsdev is not supported by this qemu build."



On Wed, Jun 22, 2011 at 12:33:49PM +0100, Daniel P. Berrange wrote:
> On Wed, Jun 22, 2011 at 12:27:50PM +0100, Daniel P. Berrange wrote:
> > On Wed, Jun 22, 2011 at 11:43:48AM +0100, Richard W.M. Jones wrote:
> > > When trying to add a 9p filesystem to a guest, I get the qemu error
> > > "fsdev is not supported by this qemu build." (when starting the
> > > guest).
> > > 
> > > I'm still looking at this.  It seems to be something to do with the
> > > machine type causing the -fsdev option not to be registered inside
> > > qemu.  I just wanted to record the problem here in case anyone else
> > > has any ideas.
> > > 
> > > Full XML and qemu command line is below.
> > 
> > This is all fine & practically identical to what I've used
> > 
> > > Occurs with:
> > > 
> > > libvirt-0.9.2-2.fc16.x86_64
> > > 2:qemu-system-x86-0.14.0-8.fc16.x86_64
> > 
> > I have qemu-0.14.0-0.1.201102107aa8c46.fc15.x86_64  which I
> > built myself. IIUC the code, the only way you can lack the
> > fsdev support is if libattr.so was not present during the
> > build. So perhaps  the Fedora QEMU RPM is missing a
> > BuildRequires: libattr-devel, and I just happened to have
> > that available on the machine I did my build on.
> 
> Yep, that's the problem. Looking in
> 
>   http://kojipkgs.fedoraproject.org/packages/qemu/0.14.0/8.fc16/data/logs/x86_64/build.log
> 
> I see the configure summary:
> 
>   ATTR/XATTR support no

Ah, missing BR, which also explains why my qemu RPM built by hand
worked OK ...

I'll fix this up in Fedora.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
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