[Libvirt-cim] Query regarding Xen_ComputerSystem.RequestStateChange() and Live migration

[Subba Rao, Sandeep M (STSD)]

Hi Kaitlin,

Hope you are doing fine. 

We need a clarification regarding the CIM_ConcereteJob support part of Xen_ComputerSystem.RequestStateChange() method to start or stop a Virtual Machine. After we invoke the method, we were expecting a return value of 4096 (Operation Scheduled) with the reference to Job to track the status.

Instead we are noticing that the method returns 0 - indicating success, however the Virtual machine does not stop because of memory or other errors. 

Can you clarify whether this is a known issue in libvirt-CIM? Also recommend how to track the invoked job?

The OS is an RHEL 5.4 and the libvirt and xen versions are as follows:

[root at RHEL54 ~]# cat /etc/issue
Red Hat Enterprise Linux Server release 5.4 Beta (Tikanga)
Kernel \r on an \m

[root at RHEL54 ~]# uname -a
Linux RHEL54 2.6.18-160.el5xen #1 SMP Mon Jul 27 18:01:58 EDT 2009 i686 i686 i386 GNU/Linux
[root at RHEL54 ~]# rpm -qa | grep libvirt
libvirt-0.6.3-17.el5
libvirt-cim-0.5.5-2.el5
libvirt-python-0.6.3-17.el5
[root at RHEL54 ~]# rpm -qa | grep xen
kernel-xen-devel-2.6.18-160.el5
kernel-xen-2.6.18-160.el5
xen-3.0.3-92.el5
xen-libs-3.0.3-92.el5
[root at RHEL54 ~]# rpm -qa | grep sblim
sblim-cmpi-base-1.5.5-34.el5
[root at RHEL54 ~]#

We also need clarification for live migration. We notice that Xen_ComputerSystem instance for the Virtual machine which is live migrated is being reported on the source and target host. Can you clarify us how to determine the actual host where the VM is associated? We were hoping that HostedDependency association will be helpful, but did not work.
 
Appreciate any help in this regard.

Sandeep