[Gluster-users] How to setup round-robin distribute replicate?

[Prasad, Nirmal]

Played around with the /var/lib/glusterd/vols/gl_disk /gl_disk-fuse.vol using rr and alu schedulers.

Seems like this is the side effect of the default DHT. In my set of files - the filename gets hashed to a single node and the brick fills up. The files start small and they will grow later so I don't really want many of them on a single node.

I do have control to name them differently or structure the layout.  Reads are the ones that are important so the DHT is good to have as opposed to sending lookups to many bricks.

Is gaming the DHT the only option?

From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Prasad, Nirmal
Sent: Friday, March 21, 2014 11:09 PM
To: gluster-users at gluster.org
Subject: [Gluster-users] How to setup round-robin distribute replicate?

Hi,

Based on the documentation - distribute replicated volume puts files in random. I have 20 bricks (10x2) and want to distribute files in round-robin. The files land up only on 1 node till it fills up - I want to evenly distribute the files (only 1 writer).

Tried to find the location for volume file for rr scheduler - there are a bunch of files - not sure which one is correct.

Any pointers?
Thanks
Regards
Nirmal

Volume Name: gl_disk
Type: Distributed-Replicate
Volume ID: ff5e70d6-c559-4c38-8b13-96e4f09825ba
Status: Started
Number of Bricks: 10 x 2 = 20
Transport-type: tcp
Bricks:
Brick1: 192.168.100.10:/mnt/disk/data
Brick2: 192.168.100.11:/mnt/disk/data
Brick3: 192.168.100.12:/mnt/disk/data
Brick4: 192.168.100.13:/mnt/disk/data
Brick5: 192.168.100.14:/mnt/disk/data
Brick6: 192.168.100.15:/mnt/disk/data
Brick7: 192.168.100.16:/mnt/disk/data
Brick8: 192.168.100.17:/mnt/disk/data
Brick9: 192.168.100.18:/mnt/disk/data
Brick10: 192.168.100.19:/mnt/disk/data
Brick11: 192.168.100.20:/mnt/disk/data
Brick12: 192.168.100.21:/mnt/disk/data
Brick13: 192.168.100.22:/mnt/disk/data
Brick14: 192.168.100.23:/mnt/disk/data
Brick15: 192.168.100.24:/mnt/disk/data
Brick16: 192.168.100.25:/mnt/disk/data
Brick17: 192.168.100.26:/mnt/disk/data
Brick18: 192.168.100.27:/mnt/disk/data
Brick19: 192.168.100.28:/mnt/disk/data
Brick20: 192.168.100.29:/mnt/disk/data


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