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Re: [Fedora-xen] Re: [fedora-virt] virt-install (and virt-manager) unsupported virtualization type 'xen' with pv_ops dom0 on Fedora 10



On Mon, Mar 09, 2009 at 02:24:04PM +0200, Pasi Kärkkäinen wrote:
> On Mon, Mar 09, 2009 at 10:39:29AM +0000, Daniel P. Berrange wrote:
> > On Sun, Mar 08, 2009 at 09:23:10PM +0200, Pasi K?rkk?inen wrote:
> > > On Sat, Mar 07, 2009 at 09:37:25PM +0200, Pasi Kärkkäinen wrote:
> > > > On Sat, Mar 07, 2009 at 02:28:52PM -0500, Cole Robinson wrote:
> > > > > >> [root dom0test ~]# cat /sys/hypervisor/properties/capabilities
> > > > > >> cat: /sys/hypervisor/properties/capabilities: No such file or directory
> > > > > >>
> > > > > > 
> > > > > > [root dom0test ~]# ls -la /sys/hypervisor
> > > > > > ls: cannot access /sys/hypervisor: No such file or directory
> > > > > > 
> > > > > > 
> > > > > 
> > > > > Hmm, well that will do it. Libvirt capabilities are what tell user apps
> > > > > what types of domains can be installed, and generating xen capabilities
> > > > > is largely dependent on the above paths. Not too sure what to do from here.
> > > > > 
> > > > 
> > > > Ok.
> > > > 
> > > > I'll try asking what's the thing with that.. if it's still missing, or is it
> > > > deprecated or something..
> > > > 
> > > 
> > > Ok, it seems that /sys/hypervisor feature is not yet implemented in pv_ops
> > > dom0 kernel.
> > > 
> > > There's a patch somewhere in Redhat's old dom0 repository.. Jeremy is trying
> > > to find that. 
> > 
> > 
> > If this patch gets rejected for whatever reason, let me know, becasue we
> > can possibly switch libvirt over to making a direct hypercall to fetch
> > this information.
> > 
> 
> Yep. I will.
> 
> The patch seems to be here:
> http://git.et.redhat.com/?p=linux-2.6-dom0-pvops.git;a=commit;h=7aa79a5603bb604e8bf4fe7c31cc9c8b3d3b7ea2
> 

And now this feature is committed to pv_ops kernel git tree:
http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=commit;h=834bf23efcffbc3e2c0c18ad277b3751ed2ba180

ATM this fix is needed to compile the kernel with /sys/hypervisor support patch:
http://lists.xensource.com/archives/html/xen-devel/2009-03/msg00699.html

I compiled a custom kernel with the patch included, and now:

[root dom0test ~]# cat /sys/hypervisor/properties/capabilities 
xen-3.0-x86_32p 

But Fedora 10 domU installation still fails:

[root dom0test ~]# virt-install -n vm01 -r 512 --vcpus=1 -f /dev/vg00/vm01 --vnc -p -l
"ftp://ftp.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/10/Fedora/i386/os";


Starting install...
Retrieving file .treeinfo...                                             | 1.1 kB     00:00     
Retrieving file vmlinuz-PAE...                                           | 2.5 MB     00:01     
Retrieving file initrd-PAE.img...                                        |  16 MB     00:10     
XML description for failed to build sexpr is not well formed or invalid
Domain installation may not have been
 successful.  If it was, you can restart your domain
 by running 'virsh start vm01'; otherwise, please
 restart your installation.
ERROR    XML description for failed to build sexpr is not well formed or invalid
Traceback (most recent call last):
  File "/usr/sbin/virt-install", line 692, in <module>
    main()
  File "/usr/sbin/virt-install", line 632, in main
    dom = guest.start_install(conscb, progresscb, wait=(not wait))
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 732, in start_install
    return self._do_install(consolecb, meter, removeOld, wait)
  File "/usr/lib/python2.5/site-packages/virtinst/Guest.py", line 767, in _do_install
    self.domain = self.conn.createLinux(install_xml, 0)
  File "/usr/lib/python2.5/site-packages/libvirt.py", line 915, in createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self)
libvirtError: XML description for failed to build sexpr is not well formed or invalid


-- Pasi


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