From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: all rbd users: set 'filestore fiemap = false'
Date: Mon, 18 Jun 2012 04:57:20 -0400
Message-ID: <20120618085719.GA7592@infradead.org>
References: <Pine.LNX.4.64.1206172053320.16985@cobra.newdream.net>
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To: Sage Weil <sage@inktank.com>
Cc: ceph-devel@vger.kernel.org

On Sun, Jun 17, 2012 at 09:02:15PM -0700, Sage Weil wrote:
> that data over the wire.  We have observed incorrect/changing FIEMAP on 
> both btrfs:

both btrfs and?

Btw, btrfs had SEEK_HOLE/SEEK_DATA which are a lot more useful for this
kind of operations, and xfs has added support for it as well now.