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Yes, output attached:

2011-10-18 16:58:44,258 DEBUG nova.utils [-] Running cmd (subprocess): qemu-img convert -f qcow2 -O ami -s d0a367781b6e44bb8ebf3dc37367c281 /opt/stack/nova/nova/..//instances/instance-00000003/disk /tmp/tmp80DzPT/d0a367781b6e44bb8ebf3dc37367c281 from (pid=1886) execute /opt/stack/nova/nova/utils.py:165 2011-10-18 16:58:44,313 INFO nova.compute.manager [-] Updating host status 2011-10-18 16:58:54,120 DEBUG nova.utils [-] Result was 1 from (pid=1886) execute /opt/stack/nova/nova/utils.py:180 2011-10-18 16:58:54,121 ERROR nova.exception [-] Uncaught exception (nova.exception): TRACE: Traceback (most recent call last): (nova.exception): TRACE: File "/opt/stack/nova/nova/exception.py", line 98, in wrapped (nova.exception): TRACE: return f(args, *kw) (nova.exception): TRACE: File "/opt/stack/nova/nova/virt/libvirt/connection.py", line 459, in snapshot (nova.exception): TRACE: utils.execute(qemu_img_cmd) (nova.exception): TRACE: File "/opt/stack/nova/nova/utils.py", line 188, in execute (nova.exception): TRACE: cmd=' '.join(cmd)) (nova.exception): TRACE: ProcessExecutionError: Unexpected error while running command. (nova.exception): TRACE: Command: qemu-img convert -f qcow2 -O ami -s d0a367781b6e44bb8ebf3dc37367c281 /opt/stack/nova/nova/..//instances/instance-00000003/disk /tmp/tmp80DzPT/d0a367781b6e44bb8ebf3dc37367c281 (nova.exception): TRACE: Exit code: 1 (nova.exception): TRACE: Stdout: '' (nova.exception): TRACE: Stderr: "qemu-img: Unknown file format 'ami'\n" (nova.exception): TRACE: 2011-10-18 16:58:54,162 ERROR nova.rpc [-] Exception during message handling (nova.rpc): TRACE: Traceback (most recent call last): (nova.rpc): TRACE: File "/opt/stack/nova/nova/rpc/impl_kombu.py", line 620, in _process_data (nova.rpc): TRACE: rval = node_func(context=ctxt, *node_args) (nova.rpc): TRACE: File "/opt/stack/nova/nova/exception.py", line 98, in wrapped (nova.rpc): TRACE: return f(args, *kw) (nova.rpc): TRACE: File "/opt/stack/nova/nova/compute/manager.py", line 655, in snapshot_instance (nova.rpc): TRACE: self.driver.snapshot(context, instance_ref, image_id) (nova.rpc): TRACE: File "/opt/stack/nova/nova/exception.py", line 129, in wrapped (nova.rpc): TRACE: raise Error(str(e)) (nova.rpc): TRACE: Error: Unexpected error while running command. (nova.rpc): TRACE: Command: qemu-img convert -f qcow2 -O ami -s d0a367781b6e44bb8ebf3dc37367c281 /opt/stack/nova/nova/..//instances/instance-00000003/disk /tmp/tmp80DzPT/d0a367781b6e44bb8ebf3dc37367c281 (nova.rpc): TRACE: Exit code: 1 (nova.rpc): TRACE: Stdout: '' (nova.rpc): TRACE: Stderr: "qemu-img: Unknown file format 'ami'\n" (nova.rpc): TRACE:

Regards, Michael