Posted by: Anonymous Coward
on March 21, 2007 10:54 AM
You should understand the structure of a VM migrate to understand why you dont need a shared FS for a migration. It does not matter what kind of FS your VM is using. A migrate moves the complete machine (VM) state (memory) including the current VFS state of the running machine. It does this with a dirty block principle in multiple memory copy sweeps - before it actually switches to the new location, the original VM is paused and all remaining dirty blocks are copied over before the migrated VM is taken active and the paused VM gets killed.