[ovirt-users] Can HA Agent control NFS Mount?

[Doron Fediuck]

----- Original Message -----
> From: "Andrew Lau" <andrew at andrewklau.com>
> To: "users" <users at ovirt.org>
> Sent: Saturday, May 24, 2014 9:59:26 AM
> Subject: [ovirt-users] Can HA Agent control NFS Mount?
> 
> Hi,
> 
> I was just wondering, within the whole complexity of hosted-engine.
> Would it be possible for the hosted-engine ha-agent control the mount
> point?
> 
> I'm basing this off a few people I've been talking to who have their
> NFS server running on the same host that the hosted-engine servers are
> running. Most normally also running that on top of gluster.
> 
> The main motive for this, is currently if the nfs server is running on
> the localhost and the server goes for a clean shutdown it will hang
> because the nfs mount is hard mounted and as the nfs server has gone
> away, we're stuck at an infinite hold waiting for it to cleanly
> unmount (which it never will)
> 
> If it's possible for instead one of the ha components to unmount this
> nfs mount when it shuts down, this could potentially prevent this.
> There are other alternatives and I know this is not the "supported"
> scenario, but just hoping to bounce a few ideas.
> 
> Thanks,
> Andrew

Hi Andrew,
Indeed we're not looking into the Gluster flow now as it has some
known issues. Additionally (just to make it clear) local nfs will
not provide any tolerance if the hosting server dies. So we should
be looking at a shared storage regardless of the hypervisors.