Once your VM is under cluster control, you should use the cluster commands to start, stop or migrate it. Using a combination of Cluster and virsh commands can result in a corrupt VM disk image as you can end up with the VM running on multiple nodes at the same time.
I messed this up once while building on of my clusters. See the below links: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/High_Availability_Add-On_Overview/s2-rgmanager-virt-features.html https://fedorahosted.org/cluster/wiki/VirtualMachineBehaviors Keith On Tue, Apr 23, 2013 at 10:42 AM, Digimer <[email protected]> wrote: > On 04/23/2013 06:11 AM, Ralf Aumueller wrote: > >> Hello, >> >> we have two 2-node clusters running on CentOS 6.4. Only service managed by >> clusters are KVM virtual machines. Both clusters have access to an >> NFS-server on >> which the config and storage files of the VMs reside. >> Now I want to move a VM from cluster1 to cluster2 with the following >> approach: >> >> On cluster1: >> Edit cluster.conf and remove vm1 config >> cman_tool version -r >> virsh migrate --live vm1 qemu+ssh://HOST1_CL2/system tcp:HOST1_CL2 >> >> (After live migration finished) >> >> On cluster2: >> Edit cluster.conf and add vm1 config >> cman_tool version -r >> clusvcadm -e vm:vm1 >> (I have autostart="0" so I need to enable the VM. Cluster-SW finds >> running vm1 >> and clustat is OK). >> >> I tried it and it worked -- but is it save? Any comments (expect to ask >> why we >> have two 2-node clusters :-) ) ? >> >> Best regard, >> Ralf >> > > Did you try; > > clusvcadm -M vm:foo -m target.node > > That is how I live-migrate VMs. No need to remove it from the cluster and > then re-add it. > > -- > Digimer > Papers and Projects: https://alteeve.ca/w/ > What if the cure for cancer is trapped in the mind of a person without > access to education? > > > -- > Linux-cluster mailing list > [email protected] > https://www.redhat.com/**mailman/listinfo/linux-cluster<https://www.redhat.com/mailman/listinfo/linux-cluster> >
-- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster
