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 Hi,

 I downloaded nova from github.com yesterday.
I started an LXC instance (with use_cow_images=True in nova.conf).
Termination is done successfully, but it fails in cleanup.
Is it a bug?

 I'm using libvirt 0.9.13.

In the log:
2012-08-30 13:35:11 INFO nova.virt.libvirt.driver [-] [instance: cde9e8e0-621b-440a-969b-2a787adac731] Instance destroyed successfully.
2012-08-30 13:35:11 ERROR nova.virt.libvirt.driver [req-381cac99-426a-44c0-83a7-e18060973cdb admin admin] [instance: cde9e8e0-621b-440a-969b-2a787adac731] Error from libvirt during saved instance removal. Code=3 Error=this function is not supported by the connection driver: virDomainHasManagedSaveImage

I think it fails at line 488 in the following code:

nova/virt/libvirt/driver.py 
 479     def _cleanup(self, instance, network_info, block_device_info):
 480         try:
 481             virt_dom = self._lookup_by_name(instance['name'])
 482         except exception.NotFound:
 483             virt_dom = None
 484         if virt_dom:
 485             try:
 486                 # NOTE(derekh): we can switch to undefineFlags and
 487                 # VIR_DOMAIN_UNDEFINE_MANAGED_SAVE once we require 0.9.4
 488                 if virt_dom.hasManagedSaveImage(0):
 489                     virt_dom.managedSaveRemove(0)

 Thanks,
 David

----------------------
Dr. Dong-In "David" Kang
Computer Scientist
USC/ISI