Rafael, KVM live migration really relies on whether the underlying shared storage (and file system) supports the ability to provide data consistency during a migration. You never ever want a situation where 2 hosts are able to mount and write to the same volume concurrently.
You can live migrate in KVM today using the following underlying file systems/methods: 1. NFS 2. CEPH 3. Clustered Logical Volume Management (CLVM) on top of SAN exposed storage via iSCSI,FC or FCOE. It's also possible to build your own storage driver and set a LUN to read only on a particular host using your SANs API. Solidfire, Nexenta and Cloudbyte have also added storage drivers more recently that may provide support for live migration, but as I'm not personally familiar with these storage platforms, I'll leave it up to others to comment if they wish. - Si ________________________________________ From: Rafael Weingartner <rafaelweingart...@gmail.com> Sent: Tuesday, March 31, 2015 3:36 PM To: us...@cloudstack.apache.org; dev@cloudstack.apache.org Subject: Cloudstack and KVM clusters, Hi folks, I was looking a matrix of Cloudstack compatibility matrix at http://pt.slideshare.net/TimMackey/hypervisor-31754727, Slide 25 seemed to show that we cannot have clusters of KVM in CS? Is that true? Is it possible to live migrate VMs between KVM hosts that are not clustered in CS? -- Rafael Weingärtner
