[ovirt-users] Re: Trying to add a LUN to a host and use that, instead of Gluster, as the datastore for my VM's.

On 11/2/2019 4:07 AM, Strahil wrote: > You should  be able to do that with the POSIX compliant domain ... > If nit, it's better to open a bug so this behaviour is investigated > further. I haven't tried the POXIS compliant domain but from what I recall and remember happening, I couldn't bind a host to more then a single storage domain.  I could be wrong but I couldn't select more then a single storage domain a host could be associated with.

So it was either Local storage or GlusterFS storage, but both couldn't be bound to a single host. Does oVirt have the facilities to test this out to see how it should be done? Thx, TK > > Best Regards, > Strahil NikolovOn Nov 2, 2019 00:38, TomK <tomkcpr(a)mdevsys.com&gt; wrote: >> >> On 10/11/2019 12:10 AM, Strahil wrote: >>> I'm not sure, but you can try with replica 1 gluster volume. >>> Later that gluster volume can be changed to replica 2 arbiter 1 or >>> even better replica 3 volume. >>> >> >> Now that I see this I'm not sure we're on the same page. >> >> Thinking this might clarify a bit better.  Let's take this scenario, >> assume gluster is working perfectly: >> >> HOST01 >> 4TB Local LUN /dev/sdb >> 4TB Gluster FS (brick w/ host02,03) /dev/sdc >> >> >> HOST02 >> 4TB Local LUN /dev/sdb >> 4TB Gluster FS (brick w/ host01,03) /dev/sdc >> >> >> HOST03 >> 4TB Local LUN /dev/sdb >> 4TB Gluster FS (brick w/ host02,01) /dev/sdc >> >> >> For each host I need the local LUN to be available for VM's with the >> GlusterFS storage that's distributed across all three nodes. >> >> However, when I tried to add a local LUN, the host was removed from the >> storage domain rendering it unavailable.  Now when I took out the local >> LUN, I was able to readd that host to the GlusterFS storage domain. >> >> So it appears I can't add a local LUN when a host is already >> participating in a GlusterFS storage domain. >> >> >> Cheers, >> TK >> >> >>> >>> Best Regards, >>> Strahil NikolovOn Oct 10, 2019 13:04, Tom <tk(a)mdevsys.com&gt; wrote: >>>> >>>> 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(a)yahoo.com&gt; 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(a)mdevsys.com&gt; >>>>> 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 sc