On 30/04/18 11:43, Eduardo Mayoral wrote:
Hi,
I would like to set up a new oVirt deployment with hosts that have the VMs running on local attached storage. I understand this has the requirement of having each host in its own cluster (and own datacenter, it seems, I understand the need for the dedicated cluster, not so much for the dedicated datacenter).
At the same time, I would like to have some shared storage domains so I can use it to export VMs or migrate them around hosts (probably in three stages, first migrate VM storage from local to the shared storage domain, second migrate the host (probably not possible to do a "hot" migration, but at least "cold"), third migrate the VM storage from the shared storage domain to the local storage domain of the new host).
So I thought maybe I can deploy a datacenter in shared storage mode, with one cluster per host. Use one or two shared storage domains for master and as an stage area for planned VM migrations as explained before, and then configure several storage domains, one per host, as posix FS . I would then deploy the VMs on the local posix FS storage domains and set affinity rules for the VMs to their hosts as needed.
Would this work? Is there a better way of achieving local storage and retaining the ability to share storage among hosts and migrate VMs?
Have you thought about using glusterfs? If hosts are physically close, that would probably be the best solution. -- Tony Albers Systems administrator, IT-development Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark. Tel: +45 2566 2383 / +45 8946 2316