[one-users] experiences with distributed FS?

[Alberto Zuin - Liste]

Hello,
I have an installation of OpenNebula 3.0 with Xen Hypervisor and a 
storage with MooseFS.
The OpenNebula server is also the MooseFS master server; obviously we 
have a second OpenNebula/MooseFS slave server configured with uCarp for HA.
At the moment we have 3 storage nodes, every server is equiped with 2x 
2TB SATA disks  for a total of 11 TB disk space; we use a replica factor 
of 2.
On OpenNebula side, we use shared storage driver; the VM disks are plain 
files, Xen driver is "file:"
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.

If you want, on my personal blog (http://www.azns.it) there are many 
configuration examples of OpenNebula/MooseFS/uCarp. Sorry they are in 
italian

Bye,
Alberto

On 08/02/2012 14:18, João Pagaime wrote:
> Hello all,
>
> We're looking into the possibility of using a distributed FS, like 
> glusterfs or similar solution for the image repository
>
> Can anyone share his experiences on this topic?  any hints would be 
> nice... Existing specific documentation? REcommendend configurations? 
> Tested configurations? Things to watch out for? Things particular to 
> open-nebula? Problems? Stability (is it maintainable without a general 
> shutdown)?  Effort/learning curve ("large", "small", hours, days, 
> weeks)? Any other information?
>
> Thanks any way, best regards,
> João
>
>
>
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