[Gluster-users] Expanding replicated volume

[Antun Krasic]

Hello,

I have two servers with replica 2 setup, with total of 380GB of disk 
space ( gluster volume create datastore replica 2 transport tcp 
server1:/datastore server2:/datastore).

I'd need to add more capacity to the servers, I know I need to add 2 
more servers to the configuration, however do they need to be with the 
same disk size ? Meaning, if I add a 2 VMs with 20GB bricks, that would 
expand the volume by 20GB ?

Second part is mounting, I'm curious if anything would change in the 
current fstab entry:

server1:/datastore /mnt/datastore glusterfs 
default,_netdev,backupvolfile-server=server2 0 0

Gluster would properly utilize all 4 servers in this case, or fstab 
entry needs to be modified ?

Thank you!