From: Jamie Lokier <jamie@shareable.org>
To: Eric Sandeen <sandeen@redhat.com>, Mark Fasheh <mfasheh@suse.com>,
linux-fsdevel@vger.kernel.org, Andreas Dilger <adilger@shaw.ca>,
Kalpak Shah <Kalpak.Shah@sun.com>,
Josef Bacik <jba
Subject: Re: [PATCH 0/4] Fiemap, an extent mapping ioctl - round 2
Date: Fri, 27 Jun 2008 11:32:52 +0100 [thread overview]
Message-ID: <20080627103252.GA31765@shareable.org> (raw)
In-Reply-To: <20080627100102.GB29319@disturbed>
Dave Chinner wrote:
> On Fri, Jun 27, 2008 at 10:41:56AM +0100, Jamie Lokier wrote:
> > > > Right now the interface seems to be about returning details of the
> > > > filesystem's accounting of the on-disk layout, as opposed to just a
> > > > simple mapping. As 2 examples:
...
> > - The filesystem's internal representation may have _many_ more
> > extents than the contiguous layout. E.g. a 4GiB file might have
> > 65536 x 64kiB extents on some filesystem, or 1 extent when
> > merged. Is it ever useful to return the much larger list?
>
> 64k max extent size? I'd consider that a block based filesystem,
> not an extent based filesytem....
It's only block based if the size is fixed.
Besides it's just an example. If "real" extent based filesystems
never split their contiguous file extents for internal processing
reasons, I don't know what we're talking about :-)
-- Jamie
next prev parent reply other threads:[~2008-06-27 10:32 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-25 22:18 [PATCH 0/4] Fiemap, an extent mapping ioctl - round 2 Mark Fasheh
2008-06-26 3:03 ` Andreas Dilger
2008-06-26 9:36 ` Jamie Lokier
2008-06-26 10:24 ` Andreas Dilger
2008-06-26 11:37 ` Anton Altaparmakov
2008-06-26 12:19 ` Jamie Lokier
2008-06-26 13:16 ` Dave Chinner
2008-06-26 13:27 ` Jamie Lokier
2008-06-26 13:48 ` Eric Sandeen
2008-06-26 14:16 ` Jamie Lokier
2008-06-26 16:56 ` Andreas Dilger
2008-06-29 19:12 ` Anton Altaparmakov
2008-06-29 21:45 ` Dave Chinner
2008-06-30 22:57 ` Jamie Lokier
2008-06-30 23:07 ` Mark Fasheh
2008-07-01 2:01 ` Brad Boyer
2008-07-02 6:38 ` Andreas Dilger
2008-07-02 6:33 ` Andreas Dilger
2008-07-02 14:26 ` Jamie Lokier
2008-06-26 17:17 ` Andreas Dilger
2008-06-26 14:03 ` Eric Sandeen
2008-06-27 1:41 ` Dave Chinner
2008-06-27 9:41 ` Jamie Lokier
2008-06-27 10:01 ` Dave Chinner
2008-06-27 10:32 ` Jamie Lokier [this message]
2008-06-27 22:48 ` Andreas Dilger
2008-06-28 4:21 ` Eric Sandeen
2008-07-02 6:26 ` Andreas Dilger
2008-07-02 14:28 ` Jamie Lokier
2008-07-02 21:20 ` Mark Fasheh
2008-07-03 14:45 ` Jamie Lokier
2008-06-26 14:04 ` Dave Kleikamp
2008-06-26 14:15 ` Eric Sandeen
2008-06-26 14:27 ` Dave Kleikamp
2008-07-02 23:48 ` jim owens
2008-07-03 11:17 ` Dave Chinner
2008-07-03 12:11 ` jim owens
2008-07-03 22:51 ` Dave Chinner
2008-07-04 8:31 ` Andreas Dilger
2008-07-04 12:13 ` Jamie Lokier
2008-07-07 7:40 ` Dave Chinner
2008-07-07 16:53 ` Jamie Lokier
2008-07-07 22:51 ` Dave Chinner
2008-07-07 21:16 ` jim owens
2008-07-08 3:01 ` Dave Chinner
2008-07-07 22:02 ` jim owens
2008-07-09 2:03 ` Jamie Lokier
2008-07-03 12:21 ` jim owens
2008-07-03 12:42 ` Andi Kleen
2008-07-04 20:32 ` Anton Altaparmakov
2008-07-05 10:49 ` Jamie Lokier
2008-07-05 21:44 ` Anton Altaparmakov
2008-07-07 23:01 ` jim owens
2008-07-08 1:51 ` Dave Chinner
2008-07-08 13:02 ` jim owens
2008-07-08 14:03 ` jim owens
2008-07-08 14:39 ` jim owens
2008-07-08 14:30 ` Theodore Tso
2008-07-09 1:50 ` Jamie Lokier
2008-06-26 17:01 ` Andreas Dilger
2008-07-03 14:37 ` jim owens
2008-07-03 15:17 ` Jamie Lokier
2008-07-04 8:49 ` Andreas Dilger
2008-07-04 11:28 ` Jamie Lokier
2008-07-03 23:00 ` Dave Chinner
2008-07-04 9:00 ` Andreas Dilger
2008-07-07 23:28 ` jim owens
2008-07-09 1:53 ` Jamie Lokier
2008-07-09 15:01 ` jim owens
2008-07-08 0:06 ` jim owens
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