Gluster users - Feb 2017 - Question about heterogeneous bricks

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
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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
>
>
>
>
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