Hi everyone.<br>i&#39;ve been trying to migrate a domain from hostA to hostB.When i did it with &quot;xm&quot; command,the domain could be migrated successfully,But everytime i did it with <br>&quot;virsh --live migrate &lt;Domain&gt; 
xen+ssh://root@Destination&quot;,<br>it failed and told me something like <br>&quot;Error:Domain not 
found:xenUnifiedDomainLookupByName&quot;.<br>The same thing happened when i tried to do the same thing with libvirt 
API like virDomainMigrate &amp; virDomainMigrateToURI.<br>i am confused 
about this.<br>So can anybody can tell me why?Thanks a lot.<br>BTW ,my 
OS is CentOS 5.4 and my hypervisor is xen3.1.2 which is installed with 
the OS.And the libvirt version is 0.7.7.<br>THANKS A LOT AGAIN.<br>