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 <cwilliams3...@gmail.com> 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/html/administration_guide/formatting_and_mounting_bricks#idm139907083110432
> 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 <cwilliams3...@gmail.com>
> wrote:
>
>> Strahil,
>>
>> Thank You For Your Help !
>>
>> On Mon, Sep 28, 2020 at 4:01 PM Strahil Nikolov <hunter86...@yahoo.com>
>> 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 <
>>> jay...@gmail.com> 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/html/administration_guide/creating_arbitrated_replicated_volumes#sect-Create_Multiple_Arbitrated_Volumes
>>> -- 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 <cwilliams3...@gmail.com>
>>> 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 <jay...@gmail.com> 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 <cwilliams3...@gmail.com>
>>> 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
>>> >>> _______________________________________________
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>>> >>>
>>> >>
>>> >
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>>
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