Re: How are you using Ceph?

["Matt W. Benjamin" <matt@linuxbox.com>]

Hi

Just FYI, on the NFS integration front.  A pnfs files (RFC5661)-capable NFSv4 re-exporter for Ceph has been committed to the Ganesha NFSv4 server development branch.  We're continuing to enhance and elaborate this.  We have had on our (full) plates for a while to return Ceph client library changes.  We've finished pullup and rebasing of these, are doing some final testing of a couple things in preparation to push a branch for review.

Regards,

Matt

----- "Sage Weil" <sage@inktank.com> wrote:

> On Mon, 17 Sep 2012, Tren Blackburn wrote:
> > On Mon, Sep 17, 2012 at 5:05 PM, Smart Weblications GmbH - Florian
> > Wiessner <f.wiessner@smart-weblications.de> wrote:
> > >
> > > Hi,
> > >
> > > i use ceph to provide storage via rbd for our virtualization
> cluster delivering
> > > KVM based high availability Virtual Machines to my customers. I
> also use it
> > > as rbd device with ocfs2 on top of it for a 4 node webserver
> cluster as shared
> > > storage - i do this, because unfortunatelly cephfs is not ready
> yet ;)
> > >
> > Hi Florian;
> > 
> > When you say "cephfs is not ready yet", what parts about it are not
> > ready? There are vague rumblings about that in general, but I'd
> love
> > to see specific issues. I understand multiple *active* mds's are
> not
> > supported, but what other issues are you aware of?
> 
> Inktank is not yet supporting it because we do not have the QA in
> place 
> and general hardening that will make us feel comfortable recommending
> it 
> for customers.  That said, it works pretty well for most workloads. 
> In 
> particular, if you stay away from the snapshots and multi-mds, you
> should 
> be quite stable.
> 
> The engineering team here is about to do a bit of a pivot and refocus
> on 
> the file system now that the object store and RBD are in pretty good 
> shape.  That will mean both core fs/mds stability and features as well
> as 
> integration efforts (NFS/CIFS/Hadoop).
> 
> 'Ready' is in the eye of the beholder.  There are a few people using
> the 
> fs successfully in production, but not too many.
> 
> sage
> 
> 
>  > 
> > And if there's a page documenting this already, I apologize...and
> > would appreciate a link :)
> > 
> > t.
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-- 
Matt Benjamin
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