Hey Marc, It is very interesting that you are going to pick this up for KVM. I am working in a related issue for XenServer [1]. If you can confirm that KVM is able to live migrate local volumes to other local storage or shared storage I could make the feature I am working on available to KVM as well.
[1] https://issues.apache.org/jira/browse/CLOUDSTACK-10240 On Thu, Jan 18, 2018 at 11:35 AM, Marc-Aurèle Brothier <ma...@exoscale.ch> wrote: > There's a PR waiting to be fixed about live migration with local volume for > KVM. So it will come at some point. I'm the one who made this PR but I'm > not using the upstream release so it's hard for me to debug the problem. > You can add yourself to the PR to get notify when things are moving on it. > > https://github.com/apache/cloudstack/pull/1709 > > On Wed, Jan 17, 2018 at 10:56 AM, Eric Green <eric.lee.gr...@gmail.com> > wrote: > > > Theoretically on Centos 7 as the host KVM OS it could be done with a > > couple of pauses and the snapshotting mechanism built into qcow2, but > there > > is no simple way to do it directly via virsh, the libvirtd/qemu control > > program that is used to manage virtualization. It's not as with issuing a > > simple vmotion 'migrate volume' call in Vmware. > > > > I scripted out how it would work without that direct support in > > libvirt/virsh and after looking at all the points where things could go > > wrong, honestly, I think we need to wait until there is support in > > libvirt/virsh to do this. virsh clearly has the capability internally to > do > > live migration of storage, since it does this for live domain migration > of > > local storage between machines when migrating KVM domains from one host > to > > another, but that capability is not currently exposed in a way Cloudstack > > could use, at least not on Centos 7. > > > > > > > On Jan 17, 2018, at 01:05, Piotr Pisz <pp...@pulab.pl> wrote: > > > > > > Hello, > > > > > > Is there a chance that one day it will be possible to migrate volume > > (root disk) of a live VM in KVM between storage pools (in CloudStack)? > > > Like a storage vMotion in Vmware. > > > > > > Best regards, > > > Piotr > > > > > > > > -- Rafael Weingärtner
