JF> Just so I'm clear, CS.RequestStateChange(6==offline) will not JF> suspend (aka save) the vm. This appears to be the case after a JF> quick look at __state_change in Virt_ComputerSystem.c. In fact, JF> RSC(6) would result in CMPI_RC_ERR_NOT_SUPPORTED. Correct. JF> I assume this is noted in the capabilities :-). It is. JF> In order to do the equivalent of e.g. "xm save" in xen, one would JF> invoke CreateSnapshot(). Following the operation, state would be JF> suspended. To "restore", invoke ApplySnapshot(). Is this JF> correct? That's correct. When libvirt supports coordinated disk/memory snapshots for things like KVM, the extra level of indirection will make more sense, I think. Thanks! -- Dan Smith IBM Linux Technology Center Open Hypervisor Team email: danms@us.ibm.com