I think you should be able create a gluster volume from the local LUN on each server and use these to create 2 storage domains.

They should then be shared storage but not replicated so if a host goes down you will loose that domain.

Maybe you will need to alter the fencing policy?

Regards,
              Paul S.

From: Tom <tk@mdevsys.com>
Sent: 10 October 2019 11:04
To: Strahil <hunter86_bg@yahoo.com>
Cc: users <users@ovirt.org>
Subject: [ovirt-users] Re: Trying to add a LUN to a host and use that, instead of Gluster, as the datastore for my VM's.
 
I take it then theres no way to do so without NFS?

Sent from my iPhone

> On Oct 10, 2019, at 2:53 AM, Strahil <hunter86_bg@yahoo.com> wrote:
>
> You can create an NFS on that host and export to itself that local storage...
>
> Best Regards,
> Strahil NikolovOn Oct 9, 2019 07:43, TomK <tomkcpr@mdevsys.com> wrote:
>>
>> Manged to reverse it through the options.  Had to deactivate the custom
>> local cluster.
>>
>> Now I have my GlusterFS back and want to try and add some local storage
>> to each host under the same DC, Cluster and Storage Domain.  So
>> effectively I will have two storage locations.  One on my GlusterFS and
>> the other on the local storage I've just defined.
>>
>> Appears I can't make them coexist with oVirt.  Either the host is placed
>> in a separate cluster with local storage, or I move it back to the
>> GlusterFS.
>>
>> Appears I can't have two usable storage types under one host.  Is this
>> correct?
>>
>> What I'm looking for is in the image and shared earlier.
>>
>> Cheers,
>> TK
>>
>>> On 10/8/2019 11:03 PM, TomK wrote:
>>> I'm working to reverse this scenario.
>>>
>>> My storage domain still exists.  However I can't activate it.  The
>>> Manage button is greyed out without clear indication as to why.
>>> Difficult to tell what my next move should be.
>>>
>>> Anyway to find out?
>>>
>>> Cheers,
>>> TK
>>>
>>>> On 10/7/2019 8:25 AM, TomK wrote:
>>>> Allright.
>>>>
>>>> So I followed this and configured local storage.  It had some default
>>>> names that I changed.  It would have been either the default name, or
>>>> one I choose.  In either case it would be a different name then the
>>>> Gluster storage domain the host was a part of anyway.
>>>>
>>>> Once the process completed for both hosts, I noticed the Gluster
>>>> volume storage domain was offline and the gluster volume was gone.  I
>>>> can't seem to add that back in anymore.  I get:
>>>>
>>>> "Error while executing action DisconnectStorageServerConnection: Error
>>>> storage server disconnection"
>>>>
>>>> Guessing I can't have local storage in addition to Gluster on the same
>>>> hosts and available for VM's?
>>>>
>>>> Reason why I need that is that Gluster is slow but provides redundancy
>>>> and live migration.  But I also wanted direct storage for VM's
>>>> requiring faster IO.  So here's my scenario:
>>>>
>>>> host01
>>>> /dev/sda OS
>>>> /dev/sdb 4TB (For Gluster)
>>>> /dev/sdc 4TB (For Local Storage)
>>>>
>>>> host02
>>>> /dev/sda OS
>>>> /dev/sdb 4TB (For Gluster)
>>>> /dev/sdc 4TB (For Local Storage)
>>>>
>>>> I would like to have:
>>>>
>>>> 1) GlusterFS volume available to oVirt via the two /dev/sdb drives in
>>>> both physical hosts.
>>>> 2) Two locally attached LUN's, each separate and local to that
>>>> physical host.
>>>>
>>>> Is this possible?
>>>>
>>>> Cheers,
>>>> TK
>>>>
>>>>> On 10/6/2019 12:38 AM, Strahil wrote:
>>>>> Hi Tom,
>>>>>
>>>>> Have you checked
>>>>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Fdocumentation%2Fen-us%2Fred_hat_virtualization%2F4.3%2Fhtml%2Fadministration_guide%2Fsect-preparing_and_adding_local_storage&amp;data=02%7C01%7Cp.staniforth%40leedsbeckett.ac.uk%7C20620e09da1047a9c01708d74d6a6b3f%7Cd79a81124fbe417aa112cd0fb490d85c%7C0%7C1%7C637062991775237424&amp;sdata=uyY5rEgruVpmmDrUwR%2B5JfVlDVR4gJVMS42n6OMiTmA%3D&amp;reserved=0
>>>>> ?
>>>>>
>>>>> Best Regards,
>>>>> Strahil NikolovOn Oct 6, 2019 06:26, TomK <tomkcpr@mdevsys.com> wrote:
>>>>>>
>>>>>> Hey All,
>>>>>>
>>>>>> I've added a 4TB LUN to my physical storage and now I want to use that,
>>>>>> instead of GlusterFS as my datastore for VM's on that physical.  How do
>>>>>> I do this?
>>>>>>
>>>>>> I've tried a number of options, including adding LUN's but appears I
>>>>>> can
>>>>>> only add them to VM's directly but not use them as my datastores
>>>>>> instead
>>>>>> of GlusterFS.
>>>>>>
>>>>>> --
>>>>>> Thx,
>>>>>> TK.
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>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>> --
>> Thx,
>> TK.
>>
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