[ovirt-users] Re: Replica Question

Strahil, Once Again Thank You For Your Help ! On Tue, Sep 29, 2020 at 11:29 AM Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; wrote: > One important step is to align the XFS to the stripe size * stripe width. > Don't miss it or you might have issues. > > Details can be found at: > https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.5... > > Best Regards, > Strahil Nikolov > > > > > > > В вторник, 29 септември 2020 г., 16:36:10 Гринуич+3, C Williams < > cwilliams3320(a)gmail.com&gt; написа: > > > > > > Hello, > > We have decided to get a 6th server for the install. I hope to set up a > 2x3 Distributed replica 3 . > > So we are not going to worry about the "5 server" situation. > > Thank You All For Your Help !! > > On Mon, Sep 28, 2020 at 5:53 PM C Williams <cwilliams3320(a)gmail.com&gt; > wrote: > > Hello, > > > > More questions on this -- since I have 5 servers . Could the following > work ? Each server has (1) 3TB RAID 6 partition that I want to use for > contiguous storage. > > > > Mountpoint for RAID 6 partition (3TB) /brick > > > > Server A: VOL1 - Brick 1 directory > /brick/brick1 (VOL1 Data brick) > > > Server B: VOL1 - Brick 2 + VOL2 - Brick 3 directory /brick/brick2 > (VOL1 Data brick) /brick/brick3 (VOL2 Arbitrator brick) > > Server C: VOL1 - Brick 3 directory > /brick/brick3 (VOL1 Data brick) > > Server D: VOL2 - Brick 1 directory > /brick/brick1 (VOL2 Data brick) > > Server E VOL2 - Brick 2 directory > /brick/brick2 (VOL2 Data brick) > > > > Questions about this configuration > > 1. Is it safe to use a mount point 2 times ? > https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.3... > says "Ensure that no more than one brick is created from a single mount." > In my example I have VOL1 and VOL2 sharing the mountpoint /brick on Server B > > > > 2. Could I start a standard replica3 (VOL1) with 3 data bricks and add > 2 additional data bricks plus 1 arbitrator brick (VOL2) to create a > distributed-replicate cluster providing ~6TB of contiguous storage ? . > > By contiguous storage I mean that df -h would show ~6 TB disk > space. > > > > Thank You For Your Help !! > > > > On Mon, Sep 28, 2020 at 4:04 PM C Williams <cwilliams3320(a)gmail.com&gt; > wrote: > >> Strahil, > >> > >> Thank You For Your Help ! > >> > >> On Mon, Sep 28, 2020 at 4:01 PM Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; > wrote: > >>> You can setup your bricks in such way , that each host has at least 1 > brick. > >>> For example: > >>> Server A: VOL1 - Brick 1 > >>> Server B: VOL1 - Brick 2 + VOL 3 - Brick 3 > >>> Server C: VOL1 - Brick 3 + VOL 2 - Brick 2 > >>> Server D: VOL2 - brick 1 > >>> > >>> The most optimal is to find a small system/VM for being an arbiter > and having a 'replica 3 arbiter 1' volume. > >>> > >>> Best Regards, > >>> Strahil Nikolov > >>> > >>> > >>> > >>> > >>> > >>> В понеделник, 28 септември 2020 г., 20:46:16 Гринуич+3, Jayme < > jaymef(a)gmail.com&gt; написа: > >>> > >>> > >>> > >>> > >>> > >>> It might be possible to do something similar as described in the > documentation here: > https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.4... > -- but I'm not sure if oVirt HCI would support it. You might have to roll > out your own GlusterFS storage solution. Someone with more Gluster/HCI > knowledge might know better. > >>> > >>> On Mon, Sep 28, 2020 at 1:26 PM C Williams <cwilliams3320(a)gmail.com&gt; > wrote: > >>>> Jayme, > >>>> > >>>> Thank for getting back with me ! > >>>> > >>>> If I wanted to be wasteful with storage, could I start with an > initial replica 2 + arbiter and then add 2 bricks to the volume ? Could the > arbiter solve split-brains for 4 bricks ? > >>>> > >>>> Thank You For Your Help ! > >>>> > >>>> On Mon, Sep 28, 2020 at 12:05 PM Jayme <jaymef(a)gmail.com&gt; wrote: > >>>>> You can only do HCI in multiple's of 3. You could do a 3 server HCI > setup and add the other two servers as compute nodes or you could add a 6th > server and expand HCI across all 6 > >>>>> > >>>>> On Mon, Sep 28, 2020 at 12:28 PM C Williams < > cwilliams3320(a)gmail.com&gt; wrote: > >>>>>> Hello, > >>>>>> > >>>>>> We recently received 5 servers. All have about 3 TB of storage. > >>>>>> > >>>>>> I want to deploy an oVirt HCI using as much of my storage and > compute resources as possible. > >>>>>> > >>>>>> Would oVirt support a "replica 5" HCI (Compute/Gluster) cluster ? > >>>>>> > >>>>>> I have deployed replica 3s and know about replica 2 + arbiter -- > but an arbiter would not be applicable here -- since I have equal storage > on all of the planned bricks. > >>>>>> > >>>>>> Thank You For Your Help !! > >>>>>> > >>>>>> C Williams > >>>>>> _______________________________________________ > >>>>>> 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/AXTNUFZ3BAS... > >>>>>> > >>>>> > >>>> > >>> _______________________________________________ > >>> 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/CECMD2SWBSB... > >>> > >> > > > _______________________________________________ > 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/CTSXBT6NUWV... >