Zvi Dubitzky wrote: > What is the meaning of using virDomainMigrate () with NULL uri. > Looking at the code of qemudDomainMigratePrepare2 ()/ qemu_driver.c, I > understand that it tries to perform a migration to another > VM on the same node . Is that correct ? No, that's not right. The URI parameter is generally not needed when you are doing a live migrate; it's basically there to specify an "alternate" way to reach the remote qemu process, but I've haven't come across a case where it is useful yet. That is, you *should* set URI to NULL, and let libvirt handle the details.