Gluster users - May 2018 - Some more questions

Il giorno mer 9 mag 2018 alle ore 21:22 Jim Kinney <jim.kinney at
gmail.com>
ha scritto:
> You can change the replica count. Add a fourth server, add it's brick
to
existing volume with gluster volume add-brick vol0 replica 4
newhost:/path/to/brick

This doesn't add space, but only a new replica, increasing the number of
copies

correct. a new server will NOT add space in this manner. But the
original Q was about rebalancing after adding a 4th server. If you are
using distributed/replication, then yes, a new server with be adding a
portion of it's space to add more space to the cluster.
But in a purely replica mode, nope. 
On Wed, 2018-05-09 at 19:25 +0000, Gandalf Corvotempesta
wrote:
> Il giorno mer 9 mag 2018 alle ore 21:22 Jim Kinney <jim.kinney at gmail.
> com>
> ha scritto:
> > You can change the replica count. Add a fourth server, add it's
> > brick to
> 
> existing volume with gluster volume add-brick vol0 replica 4
> newhost:/path/to/brick
> 
> This doesn't add space, but only a new replica, increasing the number
> of
> copies
-- 
James P. Kinney III

Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain

http://heretothereideas.blogspot.com/
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Il giorno mer 9 mag 2018 alle ore 21:31 Jim Kinney <jim.kinney at
gmail.com>
ha scritto:
> correct. a new server will NOT add space in this manner. But the original
Q was about rebalancing after adding a 4th server. If you are using
distributed/replication, then yes, a new server with be adding a portion of
it's space to add more space to the cluster.

Wait, in a distribute-replicate, with replica count 3, adding a fourth
server doesn't add space..... I can't add a fourth server, I have to add
3
more servers (due to the replica count)