Cancellation of VM core dumps

I see that cancellation of core dump jobs that are memory-only are explicitly rejected libvirt: QEMU Driver error : Requested operation is not valid: cannot abort memory-only dump Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.7/site-packages/libvirt.py", line 544, in abortJob if ret == -1: raise libvirtError ('virDomainAbortJob() failed', dom=self) libvirt.libvirtError: Requested operation is not valid: cannot abort memory-only dump Is there a technical reason for this? Dumps of very large guests may take a long time and it would be useful to be able to abort them. Simon