Re: [libvirt] fully virtualized xen guest question

On Thu, Jul 31, 2008 at 11:31:39PM +0200, Christoph H?ger wrote: > I am running XEN on an debian etch. For clustering purposes I wanted to > boot fedora as virtual machine. > > That works (except for nfs mounts) fine using the paravortualization > features. > > But fully virtulalized guests do not even boot, I do not get any > sensefull error message, my config file looks like: > > <domain type='xen'> > <name>werewolf</name> > > <os> > <type>hvm</type> > <loader>/usr/lib/xen-3.0.3-1/boot/hvmloader</loader> > > <kernel>/data/virtual/kernel/kvm1/vmlinuz-2.6.18-6-amd64</kernel> > > <initrd>/data/virtual/kernel/kvm1/initrd.img-2.6.18-6-amd64</initrd> > <cmdline>root=/dev/hda1</cmdline> Booting fullyvirtualized guests off a kernel+initrd is a very new feature in Xen. Your <loader> path suggests you are using Xen 3.0.3 which is no where near new enough to support this. You need to boot of CDROM or hardisk instead. > <domain type='xen'> > <name>werewolf</name> > > <os> > <type>hvm</type> > <loader>/usr/lib/xen-3.0.3-1/boot/hvmloader</loader> > > <kernel>/data/virtual/kernel/kvm1/vmlinuz-2.6.18-6-amd64</kernel> > > <initrd>/data/virtual/kernel/kvm1/initrd.img-2.6.18-6-amd64</initrd> > <cmdline>root=/dev/hda1</cmdline> > </os> > <memory>524M</memory> > <vcpu>1</vcpu> > <devices> > <emulator>/usr/bin/kvm</emulator> Urm, you're trying to use KVM with Xen which just won't work. You need to point to Xen's version of QEMU /usr/lib/xen/bin/qemu-dm or whereever Debian puts it. > all I get when tryin virsh create is: > > xend_post: error from xen daemon: (xend.err "Error creating domain: (0, > 'Error')") This looks like a fairly old Xen which didn't know how to give proper error messages. You'll have to check /var/log/xen/ for more details, but it'll certainly be the kernel/initrd stuff that's broken, and the device emulator too. Daniel