Gluster users - May 2018 - Some more questions

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)

It all depends on how you are set up on the distribute. Think RAID 10
with 4 drives - each pair strips (distribute) and the pair of pairs
replicates. 
On Wed, 2018-05-09 at 19:34 +0000, Gandalf Corvotempesta
wrote:
> 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)
-- 
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 21:57 Jim Kinney <jim.kinney at
gmail.com>
ha scritto:
> It all depends on how you are set up on the distribute. Think RAID 10
with 4 drives - each pair strips (distribute) and the pair of pairs
replicates.

Exactly, thus I have to add the same replica count.
In a RAID10, you have to add 2 disk at once. Or in a 3way RAID10 you have
to add 3 disks at once and so on.