You can use a distributed replicated volume of type 'replica 3 arbiter 1'. For example, NodeA and NodeB are contain replica set 1 with NodeC as their arbiter and NodeD and NodeE as the second replica set 2 with NodeC as thir arbiter also. In such case you got only 2 copies of a single shard, but you are fully "supported" from gluster perspective. Also, all hosts can have an external storage like your NAS. Best Regards, Strahil Nikolov На 15 юли 2020 г. 21:11:34 GMT+03:00, Philip Brown <pbrown(a)medata.com&gt; написа: >arg. when I said "add 2 more nodes that arent part of the cluster", I >meant, >"part of the glusterfs cluster". > >or at minimum, maybe some kind of client-only setup, if they need >access? > > >----- Original Message ----- >From: "Philip Brown" <pbrown(a)medata.com&gt; >To: "users" <users(a)ovirt.org&gt; >Sent: Wednesday, July 15, 2020 10:37:48 AM >Subject: [ovirt-users] mixed hyperconverged? > >I'm thinking of doing an SSD based hyperconverged setup (for 4.3), but >am wondering about certain design issues. > >seems like the optimal number is 3 nodes for the glusterfs. >but.. I want 5 host nodes, not 3 >and I want the main storage for VMs to be separate iSCSI NAS boxes. >Is it possible to have 3 nodes be the hyperconverged stuff.. but then >add in 2 "regular" nodes, that dont store anything and arent part of >the cluster? > >is it required to be part of the gluster cluster, to also be part of >the ovirt cluster, if thats where the hosted-engine lives? >or can I just have the hosted engine be switchable between the 3 nodes, >and the other 2 be VM-only hosts? > >Any recommendations here? > >I dont what 5 way replication going on. Nor do I want to have to pay >for large SSDs on all my host nodes. >(Im planning to run them with the ovirt 3.4 node image) > > > >-- >Philip Brown| Sr. Linux System Administrator | Medata, Inc. >5 Peters Canyon Rd Suite 250 >Irvine CA 92606 >Office 714.918.1310| Fax 714.918.1325 &gt;pbrown(a)medata.com| www.medata.com >_______________________________________________ >Users mailing list -- users(a)ovirt.org >To unsubscribe send an email to users-leave(a)ovirt.org >Privacy Statement: https://www.ovirt.org/privacy-policy.html >oVirt Code of Conduct: >https://www.ovirt.org/community/about/community-guidelines/ >List Archives: >https://lists.ovirt.org/archives/list/users@ovirt.org/message/NZMXMGRGOMYE4UIQH32R6GCCHTABTGSX/ >_______________________________________________ >Users mailing list -- users(a)ovirt.org >To unsubscribe send an email to users-leave(a)ovirt.org >Privacy Statement: https://www.ovirt.org/privacy-policy.html >oVirt Code of Conduct: >https://www.ovirt.org/community/about/community-guidelines/ >List Archives: >https://lists.ovirt.org/archives/list/users@ovirt.org/message/RINQKWPRCQD5KYPFJYA75HFIUVJVTZXC/

Your other hosts that aren’t participating in gluster storage would just mount the gluster storage domains. On Wed, Jul 15, 2020 at 6:44 PM Philip Brown <pbrown(a)medata.com&gt; wrote:

You first add the node (assign Datacenter and Cluster). Then you define the storage volume and give details and options (for example option like: 'backup-volfile-servers=host2:host3'). Then during Host activation phase - all storage domains are mounted on the host and during maintenance -> umounted on the host. Best Regards, Strahil Nikolov На 16 юли 2020 г. 1:21:33 GMT+03:00, Philip Brown <pbrown(a)medata.com&gt; написа: >Awesome thats good news. > >So... does that happen automatically? > >ie: install ovirt "node" image, then tell ovirt hosted engine "go add >that node to cluster", and it automagically gets done? > >Kinda sounds likely, but I'd like to set my expectations appropriately > > >----- Original Message ----- >From: "Jayme" <jaymef(a)gmail.com&gt; >To: "Philip Brown" <pbrown(a)medata.com&gt; >Cc: "Strahil Nikolov" <hunter86_bg(a)yahoo.com&gt;, "users" &gt;&lt;users(a)ovirt.org&gt; >Sent: Wednesday, July 15, 2020 3:03:39 PM >Subject: Re: [ovirt-users] Re: mixed hyperconverged? > >Your other hosts that aren’t participating in gluster storage would >just >mount the gluster storage domains. > >On Wed, Jul 15, 2020 at 6:44 PM Philip Brown <pbrown(a)medata.com&gt; wrote: > >> Hmm... >> >> >> Are you then saying, that YES, all host nodes need to be able to talk >to >> the glusterfs filesystem? >> >> >> on a related note, I'd like to have as few nodes actually holding >> glusterfs data as possible, since I want that data on SSD. >> Rather than multiple "replication set" hosts, and one arbiter.. is it >> instead possible to have only 2 replication set hosts, and multiple >> (arbitrariliy many) arbiter nodes? >> >> >> ----- Original Message ----- >> From: "Strahil Nikolov" <hunter86_bg(a)yahoo.com&gt; >> To: "users" <users(a)ovirt.org&gt;, "Philip Brown" <pbrown(a)medata.com&gt; >> Sent: Wednesday, July 15, 2020 1:59:40 PM >> Subject: Re: [ovirt-users] Re: mixed hyperconverged? >> >> You can use a distributed replicated volume of type 'replica 3 >arbiter >> 1'. >> For example, NodeA and NodeB are contain replica set 1 with NodeC >as >> their arbiter and NodeD and NodeE as the second replica set 2 with >NodeC >> as thir arbiter also. >> >> In such case you got only 2 copies of a single shard, but you are >fully >> "supported" from gluster perspective. >> Also, all hosts can have an external storage like your NAS. >> >> Best Regards, >> Strahil Nikolov >> >> На 15 юли 2020 г. 21:11:34 GMT+03:00, Philip Brown &gt;&lt;pbrown(a)medata.com&gt; >> написа: >> >arg. when I said "add 2 more nodes that arent part of the cluster", >I >> >meant, >> >"part of the glusterfs cluster". >> > >> >or at minimum, maybe some kind of client-only setup, if they need >> >access? >> > >> > >> >----- Original Message ----- >> >From: "Philip Brown" <pbrown(a)medata.com&gt; >> >To: "users" <users(a)ovirt.org&gt; >> >Sent: Wednesday, July 15, 2020 10:37:48 AM >> >Subject: [ovirt-users] mixed hyperconverged? >> > >> >I'm thinking of doing an SSD based hyperconverged setup (for 4.3), >but >> >am wondering about certain design issues. >> > >> >seems like the optimal number is 3 nodes for the glusterfs. >> >but.. I want 5 host nodes, not 3 >> >and I want the main storage for VMs to be separate iSCSI NAS boxes. >> >Is it possible to have 3 nodes be the hyperconverged stuff.. but >then >> >add in 2 "regular" nodes, that dont store anything and arent part of >> >the cluster? >> > >> >is it required to be part of the gluster cluster, to also be part of >> >the ovirt cluster, if thats where the hosted-engine lives? >> >or can I just have the hosted engine be switchable between the 3 >nodes, >> >and the other 2 be VM-only hosts? >> > >> >Any recommendations here? >> > >> >I dont what 5 way replication going on. Nor do I want to have to pay >> >for large SSDs on all my host nodes. >> >(Im planning to run them with the ovirt 3.4 node image) >> > >> > >> > >> >-- >> >Philip Brown| Sr. Linux System Administrator | Medata, Inc. >> >5 Peters Canyon Rd Suite 250 >> >Irvine CA 92606 >> >Office 714.918.1310| Fax 714.918.1325 >> &gt;pbrown(a)medata.com| www.medata.com >> >_______________________________________________ >> >Users mailing list -- users(a)ovirt.org >> >To unsubscribe send an email to users-leave(a)ovirt.org >> >Privacy Statement: https://www.ovirt.org/privacy-policy.html >> >oVirt Code of Conduct: >> >https://www.ovirt.org/community/about/community-guidelines/ >> >List Archives: >> > >> >https://lists.ovirt.org/archives/list/users@ovirt.org/message/NZMXMGRGOMYE4UIQH32R6GCCHTABTGSX/ >> >_______________________________________________ >> >Users mailing list -- users(a)ovirt.org >> >To unsubscribe send an email to users-leave(a)ovirt.org >> >Privacy Statement: https://www.ovirt.org/privacy-policy.html >> >oVirt Code of Conduct: >> >https://www.ovirt.org/community/about/community-guidelines/ >> >List Archives: >> > >> >https://lists.ovirt.org/archives/list/users@ovirt.org/message/RINQKWPRCQD5KYPFJYA75HFIUVJVTZXC/ >> _______________________________________________ >> Users mailing list -- users(a)ovirt.org >> To unsubscribe send an email to users-leave(a)ovirt.org >> Privacy Statement: https://www.ovirt.org/privacy-policy.html >> oVirt Code of Conduct: >> https://www.ovirt.org/community/about/community-guidelines/ >> List Archives: >> >https://lists.ovirt.org/archives/list/users@ovirt.org/message/46IWO6CTOGJVZN2M6DMNB3AOX6B347S3/ >> >_______________________________________________ >Users mailing list -- users(a)ovirt.org >To unsubscribe send an email to users-leave(a)ovirt.org >Privacy Statement: https://www.ovirt.org/privacy-policy.html >oVirt Code of Conduct: >https://www.ovirt.org/community/about/community-guidelines/ >List Archives: >https://lists.ovirt.org/archives/list/users@ovirt.org/message/CJ2FUSHYJG7WQVEPDZSYEJ5QYGYXQCMS/