[ovirt-users] [Users] hosted engine setup (NFS)

[Andrew Lau]

On Mon, Apr 14, 2014 at 10:23 PM, René Koch <rkoch at linuxland.at> wrote:
>
> On 04/14/2014 12:39 PM, Sandro Bonazzola wrote:
>>
>> Il 03/03/2014 12:39, René Koch ha scritto:
>>>
>>> Hi,
>>>
>>> I installed hosted engine and faced an issue with NFS during
>>> installation.
>>>
>>> First of all, I'm using GlusterFS on my storage and ovirt engine doesn't
>>> support GlusterFS yet, only NFS.
>>>
>>> But for NFS I can't use mountprotpo=tcp as hosted-engine --setup doesn't
>>> ask for NFS options.
>>>
>>> So I manually edited the following file:
>>>
>>> /usr/share/ovirt-hosted-engine-setup/plugins/ovirt-hosted-engine-setup/storage/storage.py
>>>
>>> and changed opts.append('vers=3'):
>>>
>>>          if domain_type == 'nfs3':
>>>              fstype = 'nfs'
>>>              opts.append('vers=3,mountproto=tcp')
>>>
>>> My question is now: is it possible to ask for NFS options during setup or
>>> do you think this can lead into problems? NFS via TCP worked fine for me for
>>> one week until I rebooted the host today (did reboot tests last weeks,
>>> too which was fine) and can't start hosted engine anymore (see other mail
>>> thread), but I think the other issue is not NFS mountproto related.
>>>
>>>
>>
>> Well, in hosted-engine setup we don't ask for additional options because
>> we don't store them.
>> We just ask for nfs3 or nfs4 because we pass that value as protocol
>> version to VDSM connectStorageServer verb.
>> The above change affects only the temporary mount done for validating the
>> domain.
>
>
> Thanks a lot for the information.
>
> Btw, I can mount mit GlusterFS 3.4.2 NFS share now without specifying -o
> mountproto=tcp. Is upd now possible or is the protocol determined
> automatically now? I didn't test if hosted-engine-setup is able to mount
> GlusterFS NFS shares now without hacks, too - only discovered this new
> behavior on my hosts.

Something I noticed, is you have to restart the gluster volume after
it's created to get the NFS server to come back up. It's a little
buggy...
If you check gluster volume status you'll see that before the
"restart" the nfs server is down. I'm not sure why though

>
> Slightly off-topic question:
> The storage options are stored in
> /etc/ovirt-hosted-engine/hosted-engine.conf, right? If I want to change the
> ip address of my storage I simply put engine into global maintenance mode,
> change IP in hosted-engine.conf and re-enable hsoted-engine vm again? Or are
> there more steps required?
>
>
> Regards,
> René
>
>
>>
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