[ovirt-users] Re: Replica Question

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...