VMs are considered external, when they are running on the host, but not known to the engine.
You shouldn't be able to remove a running VM, so either the shutdown failed, or there was some other issue that led to that.
Can you attach the engine.log and the relevant host vdsm.log?
----- Original Message -----
> From: "Punit Dambiwal" <hypunit@gmail.com>
> To: users@ovirt.org
> Sent: Monday, October 27, 2014 5:02:55 AM
> Subject: [ovirt-users] Strange External Vm's
>
> Hi,
>
> I have upgraded ovirt 3.4 to 3.5 ...now whenever i removed any VM...ovirt
> created some strage external vm's...
>
>
>
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