Just for the record, what Andrew reports is not specific to GlusterFS.
I have not yet found a way to shut down my single-node Hosted deployment
cleanly without experiencing NFS hangs/timeouts on the way down.
My NFS storage is local to my host.
Also curious is that when I say "poweroff" it actually reboots and comes
up again. Could that be due to the timeouts on the way down?
-Bob
On 05/25/2014 08:13 AM, Doron Fediuck wrote:
----- Original Message -----
From: "Andrew Lau" <and...@andrewklau.com>
To: "users" <users@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.
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