[Users] Why choose glusterfs over iscsi for oVirt storage?

Justin Clacherty justin at redfish.com.au
Mon Feb 17 08:50:34 UTC 2014


Hi,

I'm just setting up some storage for use with oVirt and am wondering why I might choose glusterfs rather than just exporting a raid array as iscsi.  The oVirt team seem to be pushing gluster (though that could just be because it's a Red Hat product).  Can anyone answer this one?

What I have come up with is as follows.

For:

-          easy to expand

-          redundancy across storage devices/easy replication

-          high availablility

-          performance

-          it's kind of cool :)

-          maintenance?

Against (these are guesses):

-          performance? (multiple layers of filesystems everywhere - fs in vm + image on gluster + gluster + block filesystem)

-          complexity

-          maintenance?

Any help here is appreciated.  Also, does the underlying block level filesystem matter here?  VMs running under ovirt would be typical business applications - file serving (samba4), email, databases, web servers, etc.

Cheers,
Justin.



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