From: "Jörn Engel" <joern@lazybastard.org>
To: Christoph Hellwig <hch@infradead.org>,
Anton Altaparmakov <aia21@cam.ac.uk>,
Bernd Eckenfels <ecki@lina.inka.de>,
linux-kernel@vger.kernel.org
Subject: Re: Ext3 vs NTFS performance
Date: Sun, 6 May 2007 22:59:02 +0200 [thread overview]
Message-ID: <20070506205901.GA11665@lazybastard.org> (raw)
In-Reply-To: <20070504094610.GA31607@infradead.org>
On Fri, 4 May 2007 10:46:10 +0100, Christoph Hellwig wrote:
>
> Which means the right place to fix this is samba. Samba just need
> to intersept lseek and pread/pwrite to never allocate sparse files
> but do the right thing instead. Now what the right thing would probably
> be a preallocate instead of writing zeroes, and we need to provide the
> infrastructure for them to do it, which is in progress currently.
Why do preallocate and not just truncate the file? If the write is a
single 0x00 somewhere beyond EOF, as appears to be the pattern, truncate
will do just as well if not better. And it is available now.
Jörn
--
Joern's library part 6:
http://www.gzip.org/zlib/feldspar.html
next prev parent reply other threads:[~2007-05-06 21:03 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-01 20:43 Cabot, Mason B
2007-05-01 21:23 ` Andrew Morton
2007-05-02 12:21 ` Andi Kleen
2007-05-02 16:04 ` Theodore Tso
2007-05-02 18:40 ` Andi Kleen
2007-05-02 19:28 ` Theodore Tso
2007-05-02 16:16 ` Theodore Tso
2007-05-02 18:08 ` Jeremy Allison
2007-05-02 19:34 ` Theodore Tso
2007-05-02 20:38 ` Jeff Garzik
2007-05-02 22:01 ` Theodore Tso
2007-05-02 3:54 ` Gerhard Mack
2007-05-02 15:46 ` David Chinner
2007-05-02 15:44 ` David Chinner
2007-05-02 19:46 ` Chris Mason
2007-05-03 0:15 ` David Chinner
2007-05-03 12:57 ` Chris Mason
2007-05-03 21:14 ` Valerie Henson
2007-05-03 22:40 ` Bernd Eckenfels
2007-05-04 8:12 ` Anton Altaparmakov
2007-05-04 9:46 ` Christoph Hellwig
2007-05-04 14:47 ` Anton Altaparmakov
2007-05-04 15:49 ` Michael Tokarev
2007-05-04 18:41 ` Theodore Tso
2007-05-05 9:59 ` Christoph Hellwig
2007-05-06 20:59 ` Jörn Engel [this message]
2007-05-04 12:23 ` Theodore Tso
2007-05-04 19:40 ` Valerie Henson
2007-05-04 18:56 ` Phillip Susi
2007-05-04 19:52 ` Cabot, Mason B
2007-05-07 14:31 ` Phillip Susi
2007-09-12 23:47 ` Update: " Cabot, Mason B
2007-05-03 3:51 Al Boldi
2007-05-05 3:13 Xu CanHao
2007-05-05 13:45 ` Theodore Tso
[not found] <8hiYr-2fJ-1@gated-at.bofh.it>
[not found] ` <8huGm-2W4-33@gated-at.bofh.it>
2007-05-05 22:25 ` Bodo Eggert
2007-05-06 5:04 ` Xu CanHao
2007-05-06 1:48 Albert Cahalan
[not found] <8gShI-3hY-11@gated-at.bofh.it>
[not found] ` <8h1bh-8sG-11@gated-at.bofh.it>
[not found] ` <8h2Al-280-1@gated-at.bofh.it>
[not found] ` <8hW9y-2Lp-3@gated-at.bofh.it>
2007-05-07 11:21 ` Bodo Eggert
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