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This looks like a bug.  It appears that you are using xen through libvirt which hasn't had a whole lot of testing.

Vish

On Aug 15, 2011, at 7:18 PM, Joshua Harlow wrote:

> Hi all,
> 
> Another error that others may have seen:
> Is it supposed to continue even if this fails?
> This is for running xen btw (this is running on nova-compute in a xen dom0 instance).
> 
> ting data into image 3 (Unexpected error while running command.
> Command: sudo qemu-nbd -c /dev/nbd14 /home/ctoteam/nova/nova/..//instances/instance-0000000a/disk
> Exit code: 1
> Stdout: ''
> Stderr: "qemu-nbd: Could not access '/dev/nbd14': No such file or directory\n")
> libvir: Xen Daemon error : XML error: failed to parse domain description
> 2011-08-15 19:16:29,374 ERROR nova.exception [-] Uncaught exception
> (nova.exception): TRACE: Traceback (most recent call last):
> (nova.exception): TRACE:   File "/home/ctoteam/nova/nova/exception.py", line 97, in wrapped
> (nova.exception): TRACE:     return f(*args, **kw)
> (nova.exception): TRACE:   File "/home/ctoteam/nova/nova/virt/libvirt/connection.py", line 603, in spawn
> (nova.exception): TRACE:     domain = self._create_new_domain(xml)
> (nova.exception): TRACE:   File "/home/ctoteam/nova/nova/virt/libvirt/connection.py", line 1078, in _create_new_domain
> (nova.exception): TRACE:     domain = self._conn.defineXML(xml)
> (nova.exception): TRACE:   File "/usr/lib/python2.6/dist-packages/libvirt.py", line 1869, in defineXML
> (nova.exception): TRACE:     if ret is None:raise libvirtError('virDomainDefineXML() failed', conn=self)
> (nova.exception): TRACE: libvirtError: XML error: failed to parse domain description
> (nova.exception): TRACE: 
> 2011-08-15 19:16:29,375 ERROR nova.compute.manager [-] Instance '10' failed to spawn. Is virtualization enabled in the BIOS? Details: XML error: failed to parse domain description
> (nova.compute.manager): TRACE: Traceback (most recent call last):
> (nova.compute.manager): TRACE:   File "/home/ctoteam/nova/nova/compute/manager.py", line 329, in _run_instance
> (nova.compute.manager): TRACE:     self.driver.spawn(instance, network_info, bd_mapping)
> (nova.compute.manager): TRACE:   File "/home/ctoteam/nova/nova/exception.py", line 124, in wrapped
> (nova.compute.manager): TRACE:     raise Error(str(e))
> (nova.compute.manager): TRACE: Error: XML error: failed to parse domain description
> (nova.compute.manager): TRACE: 
> libvir: Xen error : Domain not found: xenUnifiedDomainLookupByName
> 2011-08-15 19:16:51,893 INFO nova.compute.manager [-] Found instance 'instance-00000005' in DB but no VM. State=5
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