Hi Gerry,
While I don't have any recommendations on the reboot process, if you're
using KVM I'd certainly recommend Ceph as a solution for high
availability storage. We've gone as far as rolling linux distribution
upgrades to our storage cluster with no loss of VM connectivity.
-Michael
On 29/04/2014 16:50, Gerry O'Brien wrote:
Hi,
Our OpenNebula Debian Wheezy storage server has been running for
466 days and needs to be rebooted as there have been many kernel
patches during this time. It exports the datastores to the hosts using
NFS.
What is the best way to reboot the server in order to cause the
least amount of disruption to running VMs? I've thought about
suspending all running VMs, rebooting the storage server and resuming
the VMs after the storages serveris back. Would this work? Obviously,
any VMs that have to maintain real time connections would be in
trouble, e.g. iSCSI mounts, but would an ordinary machines resume
successfully after the storage server reboots. The host NFS mounts are
as here: /datastores nfs
vers=4,bg,rw,_netdev,fsc,rsize=32768,wsize=32768,intr,noatime
In general, is there a recommended way of providing HA storage to
hosts?
Regards,
Gerry
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