I have Linux KVM guests running on CentOS 5.5 hosts. These guests usually run CentOS 5.5 also. Now I will have a RHEL 6 cluster. I need these guests to be moved to the RHEL 6 cluster. I do not need to upgrade the guests' OS as customers like their computing environment to be intact.
I use an iSCSI raid for the guest's storage. If I mapped the iSCSI target to the RHEL 6 cluster, would these guests work without change? Or I need to do something to make them work?