[Users] Attach nfs domain to gluster dc

Juan Pablo Lorier jplorier at gmail.com
Mon Dec 30 17:29:13 UTC 2013

Hi Sergey,

Sorry for the delay, but the holydays got in the middle. I've tried copy
the images among the domains, but I've got the new domain corrupted
(copied more than I should I guess). I'm trying now to learn to use
ovirt-shell as Itamar pointed to see if I can get this going.
If it make sense to you, I can open an RFE to get the option to modify
an existing domain.

On 17/12/13 04:39, Sergey Gotliv wrote:
> Juan,
> Ping me when you doing that, Friday is not a working day but usually I am checking my mails anyway. 
> I tested option #2 (see my previous mail) this morning - I just updated connection details from REST and from database directly 
> both options worked for me. Usually I wouldn't recommend to do that from database but in this particular case this is 
> the quickest possible solution. 
> Copying images between different export domain may be a little bit tricky, I'll try to create a summary for you.  
> When attaching storage domain to the new data center it makes sense to allow editing connection details at least for NFS,
> because new data center contains new hosts that have different NFS client...
> Regards,
> Sergey 
> ----- Original Message -----
>> From: "Juan Pablo Lorier" <jplorier at gmail.com>
>> To: "Sergey Gotliv" <sgotliv at redhat.com>
>> Cc: "Sander Grendelman" <sander at grendelman.com>, "users" <users at ovirt.org>
>> Sent: Tuesday, December 17, 2013 1:10:01 AM
>> Subject: Re: [Users] Attach nfs domain to gluster dc
>> Hi Sergey,
>> No need to apologize. I'm used to hear that iso domains need to import
>> the images, that just copying them won't work. I thought export domains
>> were the same, but if you say I can just copy, I'll try that next Friday
>> when I come back to the office.
>> I think this is the easier approach as using the REST would mean that I
>> have to learn to use it and it's not the right time of the year :-).
>> I think that been capable of modifying the options won't heart anybody
>> and looks like harmless, at least when domain is in maintenance, you may
>> say if I'm wrong.
>> Thank you very much for your help and for your disposition.
>> I'll let you know what happens next Friday.
>> Regards,
>> El 16/12/13 20:59, Sergey Gotliv escribió:
>>> Juan,
>>> I apologize for discovering this thread with delay. Let me try to explain.
>>> Attach option indeed missing a possibility to configure NFS options such as
>>> nfsver, retrans and timeo
>>> which by the way available when creating a new storage domain (see the
>>> Advanced Parameters section).
>>> I have to check this flow again and see which storage connection we use in
>>> order to connect this storage to the new data center. If this is a bug
>>> we'll fix it.
>>> Now about the default NFS version, we are using version 3 because usually
>>> customers have a problem to configure NFS server version 4 properly so we
>>> allow using version 4 as an advanced option.
>>> Now about your problem:
>>> Option 1:
>>> Can you just create another Export Storage Domain from scratch using
>>> advanced parameters I mentioned above in order to configure the NFS
>>> version and then just copy the content between these domains manually.
>>> Option 2:
>>> You can try to create new storage connection with the REST API as explained
>>> here: http://www.ovirt.org/Features/Manage_Storage_Connections and then
>>> try to re-attach this storage domain again.
>>> Or we can just update storage_server_connections table manually in your
>>> database.
>>> I never tried option 2 by myself but it should work.
>>> Please, feel free to contact me on my direct mail tomorrow
>>> sgotliv at redhat.com and I'll walk you through one of these options and we
>>> can check you NFS configuration.
>>> Sergey
>>> ----- Original Message -----
>>>> From: "Juan Pablo Lorier" <jplorier at gmail.com>
>>>> To: "Sander Grendelman" <sander at grendelman.com>
>>>> Cc: "users" <users at ovirt.org>
>>>> Sent: Friday, December 13, 2013 1:21:08 PM
>>>> Subject: Re: [Users] Attach nfs domain to gluster dc
>>>> Hi Sander,
>>>> I'll do the changes to the firewall as you mention. I'm running the
>>>> domain in a host as my engine is in a vm with low disk resources. I
>>>> don't know if there's a way to set up the domain automatically with
>>>> ovirt when it's deployed in a host.
>>>> Regards,
>>>> On 13/12/13 06:00, Sander Grendelman wrote:
>>>>> On Thu, Dec 12, 2013 at 5:01 PM, Juan Pablo Lorier <jplorier at gmail.com>
>>>>> wrote:
>>>>> ...
>>>>>> # nfs
>>>>>> -A INPUT -p tcp -m tcp --dport 111   -j ACCEPT
>>>>>> -A INPUT -p tcp -m tcp --dport 38467 -j ACCEPT
>>>>>> -A INPUT -p tcp -m tcp --dport 2049  -j ACCEPT
>>>>>> -A INPUT -p udp -m udp --dport 2049  -j ACCEPT
>>>>>> -A INPUT -p udp -m udp --dport 41729  -j ACCEPT
>>>>>> -A INPUT -p tcp -m tcp --dport 48491  -j ACCEPT
>>>>>> -A INPUT -p udp -m udp --dport 43828  -j ACCEPT
>>>>>> -A INPUT -p tcp -m tcp --dport 48491  -j ACCEPT
>>>>>> -A INPUT -p udp -m udp --dport 47492  -j ACCEPT
>>>>>> -A INPUT -p tcp -m tcp --dport 58837  -j ACCEPT
>>>>> The above rules might break after a reboot.
>>>>> Best practice is to set the normally dynamic nfs ports to fixed
>>>>> values in /etc/sysconfig/nfs and then open those ports in the firewall.
>>>>>> Now I'm changing the settings by overriding the defaults in the domain
>>>>>> and auto negotiating the protocol. This firewall correction may be a
>>>>>> good thing to add in the deploy.
>>>>> Are you doing this on a node or on your engine server?
>>>>> The engine-setup configured both /etc/sysconfig/nfs and iptables for me
>>>>> on my engine server (for the iso domain).
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