Re: Trying to add a LUN to a host and use that, instead of Gluster, as the datastore for my VM's.
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. Best Regards, Strahil NikolovOn Oct 10, 2019 13:04, Tom <tk@mdevsys.com> 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@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://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/htm... ?
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
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@mdevsys.com> 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@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://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/htm... > ? > > 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
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-- Thx, TK.
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