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

Thank you Kaitlin and Deepti, The VM "liveVm" on shared storage is being reported on both the hosts (source and destination), here is what we receive through "Xen_HostedDepenency" association: [root@RHEL54-host1 ~]# wbemcli ain -ac Xen_HostedDependency 'http://root:password@localhost:5988/root/virt:Xen_HostSystem.CreationClassName="Xen_HostSystem",Name="RHEL54-host1"' RHEL54-host1/root/virt:Xen_ComputerSystem.CreationClassName="Xen_ComputerSystem",Name="liveVm" RHEL54-host1/root/virt:Xen_ComputerSystem.CreationClassName="Xen_ComputerSystem",Name="Domain-0" [root@RHEL54-host1 ~]# virsh list Id Name State ---------------------------------- 0 Domain-0 running [root@RHEL54-host2 ~]# wbemcli ain -ac Xen_HostedDependency 'http://root:password@localhost:5988/root/virt:Xen_HostSystem.CreationClassName="Xen_HostSystem",Name="RHEL54-host2"' RHEL54-host2/root/virt:Xen_ComputerSystem.CreationClassName="Xen_ComputerSystem",Name="localVm" RHEL54-host2/root/virt:Xen_ComputerSystem.CreationClassName="Xen_ComputerSystem",Name="Domain-0" RHEL54-host2/root/virt:Xen_ComputerSystem.CreationClassName="Xen_ComputerSystem",Name="liveVm" [root@RHEL54-host2 ~]# virsh list Id Name State ---------------------------------- 0 Domain-0 running 7 liveVm idle As you notice, virsh command is listing properly, but the association is not updated properly and results in both hosts. On the RequestStateChange, we did not capture the message of stop failure. However, here is what we observe - we invoke the RequestStateChange method, it returns 0 - indicating success; But the VM will not start or stop due to insufficient resources. We assuming that RequestStatechange method to be synchronous call if it does not provide CIM_Job to track the status of start or stop. Generally starting a Windows VM take more than a minute. Thanks again for your help, Best Regards, Madan -----Original Message----- From: Deepti B Kalakeri [mailto:deeptik@linux.vnet.ibm.com] Sent: Thursday, October 08, 2009 1:13 PM To: Velayudham, Madan Ganesh (STSD / ESS SW) Cc: List for discussion and development of libvirt CIM; Kaitlin Rupert; Deepti B Kalakeri Subject: Re: [Libvirt-cim] Query regarding Xen_ComputerSystem.RequestStateChange() and Live migration Subba Rao, Sandeep M (STSD) wrote: AFAIK, the method would not return 4096, it would return success or failure only. Can you elaborate on what operation you are doing here ? What errors are you seeing ? Once the RqquestedStateChange() is successful you should be able to see the new state value in the Xen_ComputerSystem.EnabledState. Once the live migration of the guest using libvirt-cim is successful you should not see any information of the VM on the host. I dont think there is any means from which you can track information regarding the source from which the guest was migrated using libivrt-cim providers. Xen_HostedDependency will give information of the VM's the particular Server hosts. -- Thanks and Regards, Deepti B. Kalakeri IBM Linux Technology Center deeptik(a)linux.vnet.ibm.com