[Novalug] GFS vs NFS

Varol Okan mymail@MovingSatellites.com
Thu Oct 24 12:42:48 EDT 2013


TBH I would give CEPH a go.

CEPH comes with with a FS interface on top ( 
http://ceph.com/docs/next/cephfs/ ) and if you're re-building the 
cluster anyways this may be the time to switch.

If you are using VMWare :(
<http://www.hastexo.com/resources/hints-and-kinks/turning-ceph-rbd-images-san-storage-devices>http://comments.gmane.org/gmane.comp.file-systems.ceph.user/1262
http://www.spinics.net/lists/ceph-users/msg03852.html
but then :)
http://www.hastexo.com/resources/hints-and-kinks/turning-ceph-rbd-images-san-storage-devices

Your mileage may vary ;)

Varol :)


On 10/24/2013 12:23 PM, Nick Danger wrote:
> I have inherited a big pile of existing servers. Annoyingly some of them
> (Xen cluster, Oracle servers) have a shared disk space (GFS) and were
> built with a earlier buggy version of GFS that doesn't free space
> correctly. About once a week I have to unmount it from the servers, fsck
> the volume and remount it. That is how it has been working for the year
> plus before I started here.  That annoyance aside, it does work ok. This
> is mostly for unix admin/oracle admin home directories, some shared
> backup space for rman, some shared logging space, and some scripts that
> all the machines use, nothing critical to OS of the machine itself (RHEL
> 5.x) of the machine itself or Oracle itself.
>
> These machines are going to be rebuilt, using RHEL 6.x on a massive
> VMWare infrastructure, and I am not so sure I want to continue with the
> whole GFS shared space thing. I could just use NFS for the few times the
> machines need to share disk space, which all in all is pretty infrequent.
>
> So I ask all of you, why would YOU use GFS? Under my circumstances I
> don't see the benefit but it is also what is here already so I am on the
> fence about it. Maybe if I hear a few other use case scenarios, I might
> be swayed one way or the other.
>
> Nick
>
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