Re: [Moosefs-users] git outdated

[Laurent W. <lw...@hy...>]

On Thu, 3 Jun 2010 09:02:29 +0200
Michał Borychowski <mic...@ge...> wrote:

> It will be updated when we push the next release (probably next week).
Nice. 4 months without a commit, and 4 new stable versions was a bit annoying.
What about 1.7 ? Is there a not yet published dev branch ?
> 
> If you need any further assistance please let us know.
Thanks, now some technical points:
I've been able to deploy for testing purpose 6 boxes:
1 master, 1 metalogger, 4 chunks, for a little less than 1TB.
- Are there any known problems being mfs client and server ? Right now, every machine has its own storage, having a single volume is nice, but we can't afford to lose their processing power. I've done some quick tests, it seems to work fine.
- I've read that you have something like half a PB. We're up to 70TB, going to 200 in the next months. Are there any known limits, bottlenecks, loads that push systems/network on their knees ? We are processing satellite images, so I/O is quite heavy, and I'm worrying a bit about the behaviour during real processing load.
- Do you know of any « big user » relying on mfs ? I've been able to find several for glusterfs for example, nothing for moosefs. Such entries would be nice on the website, and reassuring for potential users.
- How does moosefs compare to glusterfs ? What are their respective pros and cons ? I haven't been able to find a comprehensive list. moose is quite easy to deploy (easier than glusterfs, I think, but not yet tested). master failover is a bit tricky, which is really annoying for HA. Goal is just beautiful. Other than that, stability/performance wise, I have no idea.
- At last, just to be sure I understood correctly, files are automatically striped through available chunkservers, so for all files with goal at 1, if a single chunkserver falls, files are unavailable, unless they are smaller than 64MB and not on the out of order chunkserver, correct ?
Thanks,
-- 
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
http://www.hygeos.com
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