[Gluster-users] rebalance speedup

Ling Ho ling at slac.stanford.edu
Wed Jun 13 02:41:45 UTC 2012

I see. Another related question. Now if I start a fix-layout rebalance, 
I don't can't see any status update using "gluster volume rebalance 
<vol> status. Is it by design or do I need to use a different command?


On 06/12/2012 07:36 PM, Shishir Gowda wrote:
> Hi ling,
> The feature for speeding up rebalance by allowing multiple servers to support parallel rebalance is in release 3.3.0.
> A single rebalance processes is started on every node/server where the volume's bricks exist.
> These rebalance processes share load between themselves to migrate data, hence reducing the bottleneck of having only 1 rebalance thread do the work.
> Additionally, all rebalance processes push data to the destination node, hence better utilizing the network too.
> Hope this answers your query.
> With regards,
> Shishir
> ----- Original Message -----
> From: "Ling Ho"<ling at slac.stanford.edu>
> To: Gluster-users at gluster.org
> Sent: Wednesday, June 13, 2012 7:02:30 AM
> Subject: [Gluster-users] rebalance speedup
> I found a discussion earlier this year regarding a planned feature for
> speeding up rebalancing in 3.3.0.
> Is these a way to speed up rebalancing now in 3.3.0? Is it possible to
> let rebalancing between multiple servers making use of more of available
> network bandwidth?
> I have 5 servers with 10Gb network, and 40Gb infiniband. The copying is
> going on the 10Gb interface only when I started rebalance, and it's
> consuming less than 1Gb/s for each streams.
> Thanks,
> ...
> ling
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