Re: [Moosefs-users] Balance chunks

[Michał B. <mic...@ge...>]

But please remember that this process takes quite a long time (it may be 2-3
weeks). Performance is the most important thing for the system, not
rebalancing.


Regards
Michał 

-----Original Message-----
From: Laurent Wandrebeck [mailto:lw...@hy...] 
Sent: Friday, December 10, 2010 10:43 AM
To: moo...@li...
Subject: Re: [Moosefs-users] Balance chunks

On Thu, 9 Dec 2010 12:56:09 -0700
Thomas S Hatch <tha...@gm...> wrote:

> I am wondering, I have a large moosefs setup right now with over 140T, 
> but we built the chunkservers out one at a time and the file load is 
> very different on all the servers, I have some servers using %45 of 
> thier disk space and some using above %90.
> 
> This of course happened because we were running on a few servers, 
> added a lot of files and then added more servers, I am just curious, 
> as I have been unable to find this in the docs anywhere, but is it 
> possible to tell the mfsmaster to start moving chunks around for a 
> more even distribution of files in this case? Or should it just even out
over time?
> 
> -Tom Hatch
That's pretty strange, mfs balances by default data load.
If your fs is 80% full, your say 3 chunkservers should be about 80% full
each. try restarting the mfschunkserver service on a lightly loaded
chunkserver ?
There's no way afaik to tell mfsmaster to balance. It does this by default.
HTH,
--
Laurent Wandrebeck
HYGEOS, Earth Observation Department / Observation de la Terre
Euratechnologies
165 Avenue de Bretagne
59000 Lille, France
tel: +33 3 20 08 24 98
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