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 
<cwilliams3...@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 <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
>>>>>> _______________________________________________
>>>>>> Users mailing list -- users@ovirt.org
>>>>>> To unsubscribe send an email to users-le...@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/AXTNUFZ3BASW2CWX7CWTMQS22324J437/
>>>>>> 
>>>>> 
>>>> 
>>> _______________________________________________
>>> Users mailing list -- users@ovirt.org
>>> To unsubscribe send an email to users-le...@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/CECMD2SWBSBDAFP3TFMMYWTSV3UKU72E/
>>> 
>> 
> 
_______________________________________________
Users mailing list -- users@ovirt.org
To unsubscribe send an email to users-le...@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/CTSXBT6NUWVLQF6BOSL3YQD7VUQEVYJB/
_______________________________________________
Users mailing list -- users@ovirt.org
To unsubscribe send an email to users-le...@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/HP6H2RGQZZMVGG2QVKRGRS52OF24XHDA/

Reply via email to