On Tue, Sep 29, 2020 at 11:29 AM Strahil Nikolov <hunter86_bg@yahoo.com> 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/html-single/administration_guide/index#sect-Disk_Configuration

Best Regards,
Strahil Nikolov

В вторник, 29 септември 2020 г., 16:36:10 Гринуич+3, C Williams <cwilliams3320@gmail.com> 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@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 <cwilliams3320@gmail.com> wrote:
>> Strahil,
>>
>> Thank You For Your Help !
>>
>> On Mon, Sep 28, 2020 at 4:01 PM Strahil Nikolov <hunter86_bg@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 <jaymef@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 <cwilliams3320@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 <jaymef@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 <cwilliams3320@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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