[libvirt-users] live migration

[Thomas Stein]

On Tuesday 24 February 2015 16:58:22 you wrote:
> 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.

Okay. Thanks for this information. But i don't think it applies to my case. I 
think i'll try a downgrade.

cheers
t.

> Michal