Re: [libvirt-users] live migration

On 24.02.2015 16:10, Thomas Stein wrote: > On Tuesday 24 February 2015 14:56:10 Michal Privoznik wrote: >> On 24.02.2015 14:29, Thomas Stein wrote: >>> Hola. >>> >>> Just tried a live migration after fixing the pc-q35-2.1 error. Now i >>> have new problem. It seems during live migration only the ram gets >>> migrated. I use the following command. >>> >>> # virsh migrate --live domain qemu+ssh://newhost/system >>> >>> --copy-storage-all --verbose --persistent >>> >>> It works without problems. Apart from beeing way to fast. >>> >>> # virsh migrate --live domain qemu+ssh://newhost/system >>> >>> --copy-storage-all --verbose --persistent >>> Migration: [100 %] >>> >>> On the destination i can enter the VM but thats it. There is no >>> filesystem and so on. >>> >>> Did the migration syntax change? >>> >>> I use libvirt 1.2.12 and qemu 2.2.0. Thanks for any hints. >> >> Only RW disks are copied. You have to copy RO, sourceless or shared >> disks yourself. > > Thanks for your answer. But what do you mean by "rw disks"? I chmod(ed) > a+rw all images but the issue still exists. Those are two separate things. One is the Linux permissions over a file, the other is disk (which doesn't have to be necessary a regular file) and set of actions guest is allowed to do over it. RO disk contains 'readonly="yes"' in its XML definition in domain XML. If there's none, disk is RW. A sourceless disk contains no <source/>, shared disk contains 'shared="yes"' and so on.

Michal