From: xen-api-boun...@lists.xen.org [mailto:xen-api-boun...@lists.xen.org] On 
Behalf Of Raleigh Rinehart
Sent: Tuesday, May 21, 2013 8:13 AM
To: xen-api@lists.xen.org
Subject: [Xen-API] XCP 1.6 can't attach existing disk to VM

Hi all,
I've been running several VMs with XCP 1.6 for several months now without issue 
and managing things With XenCenter (6.1)
However, a few day ago I needed to make a clone of a (linux) VM to do some 
testing.
Here is what I tried:
1) shutdown the VM
2) from XenCenter, right-click the VM click copy
3) Selected full copy
4) hit copy button.

At this point the copy started but quickly aborted.  I've since lost the exact 
text of the error message but it was something related to storage.

So being a naive XCP user I figured I'd detach the storage from the VM, 
copy/clone the vm and storage then re-attach the original virtual disk to the 
original vm and likewise with the clone.

However, all did not work out as planned.   The original virtual disk is now 
attached the the "Control domain", according to XenCenter.  And I cannot seem 
to do anything with it, most notably re-attach to the the correct vm.  
Basically seems to be stuck in limbo as far as I can tell.

I am using
XCP release 1.6.10-61809c
and XenCenter 6.1


Is there still an active copy process happening on the host that the disk is 
connected to? You can try unplugging the vbd that is tying that disk to dom0. 
xe vbd-list should give you a list of vbds.
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