From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Disseldorp <ddiss@suse.de>
Subject: Re: ocfs2 for OSDs?
Date: Wed, 11 Sep 2013 21:55:11 +0200
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To: Sage Weil <sage@inktank.com>
Cc: Ugis <ugis22@gmail.com>, "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>, "ceph-users@ceph.com" <ceph-users@ceph.com>

Hi Sage,

On Wed, 11 Sep 2013 09:18:13 -0700 (PDT)
Sage Weil <sage@inktank.com> wrote:

> > REFLINKs (inode-based writeable snapshots)  
> 
> This is the one item on this list I see that the ceph-osds could take real 
> advantage of; it would make object clones triggered by things like RBD 
> snapshots faster.  What is missing from this list that would be similarly 
> (or more) useful is a volume/fs snapshot feature.

I must be missing something here, but I don't see how this would offer
any advantage over Btrfs, which provides the same feature via
BTRFS_IOC_CLONE and BTRFS_IOC_CLONE_RANGE.

Cheers, David