[one-users] experiences with distributed FS?

[Chris Picton]

On 2012/02/08 5:42 PM, Alberto Zuin - Liste wrote:
> In past we used OpenNebula 2.2 with MooseFS driver for immediate 
> deployment via snapshot, but the driver wasn't updated to OpenNebula 3.0.
>
> We are very happy with MooseFS: it's very easy and robust. The only 
> consideration is on disk side: SATA is a little slow expecially in 
> write operation, then we use a lot of RAM on each storage server (8 
> GB) to cache data.

I can agree with the point on slowness

I had a shared moosefs setup running (with only 4 moosefs servers, with 
2x 1Tb SATA drives in each), and found disk writes to be far too slow to 
host our test environment correctly

I have migrated this to a custom tm, which uses moosefs for image store, 
and copies vm images to local storage to actually run.

I am busy investigating moosefs slowness on a separate testing cluster 
(and have so far improved bonnie++ rewrite speed from 1.5MB/s to 
18MB/s).  I should have something I am willing to put back into use as a 
proper shared filesystem soon (I really like using the snapshot 
capabilites to deploy vms)

Chris