[Gluster-users] Question about heterogeneous bricks

[Daniele Antolini]

Thanks!!!

Daniele

2017-02-21 13:30 GMT+01:00 Ravishankar N <ravishankar at redhat.com>:

> On 02/21/2017 05:17 PM, Nithya Balachandran wrote:
>
> Hi,
>
> Ideally, both bricks in a replica set should be of the same size.
>
> Ravi, can you confirm?
>
>
> Yes, correct.
> -Ravi
>
>
> Regards,
> Nithya
>
> On 21 February 2017 at 16:05, Daniele Antolini <lantuin at gmail.com> wrote:
>
>> Hi Serkan,
>>
>> thanks a lot for the answer.
>>
>> So, if you are correct, in a distributed with replica environment the
>> best practice is to pair nodes with the smallest size together?
>>
>> For example:
>>
>> node1      1 GB
>> node2     10 GB
>> node3      4 GB
>> node4     8 GB
>> node5     15 GB
>> node6     7 GB
>>
>> So:
>>
>> node1 with node3 (smallest is 1 GB)
>> node4 with node6 (smallest is 7 GB)
>> node2 with node5 (smallest is 10 GB)
>>
>> The command to launch:
>>
>> gluster volume create gv0 replica 2 node1:/opt/data/gv0 node3:/opt/data/gv0
>> node4:/opt/data/gv0 node6:/opt/data/gv0 node2:/opt/data/gv0
>> node5:/opt/data/gv0
>>
>> Right? In this way I should have 18 GB of free space on the mounted
>> volume (1 GB + 7 GB + 10 GB)
>>
>>
>>
>> 2017-02-21 11:30 GMT+01:00 Serkan Çoban <cobanserkan at gmail.com>:
>>
>>> I think, gluster1 and gluster2 became a replica pair. Smallest size
>>> between them is affective size (1GB)
>>> Same for gluster3 and gluster4 (3GB). Total 4GB space available. This
>>> is just a guest though..
>>>
>>> On Tue, Feb 21, 2017 at 1:18 PM, Daniele Antolini <lantuin at gmail.com>
>>> wrote:
>>> > Hi all,
>>> >
>>> > first of all, nice to meet you. I'm new here and I'm subscribing to do
>>> a
>>> > very simple question.
>>> >
>>> > I don't understand completely how, in a distributed with replica
>>> > environment, heterogeneous bricks are involved.
>>> >
>>> > I've just done a test with four bricks:
>>> >
>>> > gluster1    1 GB
>>> > gluster2    2 GB
>>> > gluster3    5 GB
>>> > gluster4    3 GB
>>> >
>>> > Each partition is mounted locally at /opt/data
>>> >
>>> > I've created a gluster volume with:
>>> >
>>> > gluster volume create gv0 replica 2 gluster1:/opt/data/gv0
>>> > gluster2:/opt/data/gv0 gluster3:/opt/data/gv0 gluster4:/opt/data/gv0
>>> >
>>> > and then mounted on a client:
>>> >
>>> > testgfs1:/gv0               4,0G   65M    4,0G   2% /mnt/test
>>> >
>>> > I see 4 GB of free space but I cannot understand how this space has
>>> been
>>> > allocated.
>>> > Can please someone explain to me how this can happened?
>>> >
>>> > Thanks a lot
>>> >
>>> > Daniele
>>> >
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > Gluster-users mailing list
>>> > Gluster-users at gluster.org
>>> > http://lists.gluster.org/mailman/listinfo/gluster-users
>>>
>>
>>
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