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From: Eric Sandeen <sandeen@redhat.com>
To: Andreas Dilger <adilger@sun.com>
Cc: ext4 development <linux-ext4@vger.kernel.org>,
	Alex Tomas <alex.tomas@sun.com>
Subject: Re: delalloc fragmenting files?
Date: Fri, 26 Oct 2007 22:08:47 -0500	[thread overview]
Message-ID: <4722ABBF.1030503@redhat.com> (raw)
In-Reply-To: <4722A87F.3070709@redhat.com>

Eric Sandeen wrote:

> but not yet O_DIRECT, will do.


dd if=/dev/zero oflag=direct of=/mnt/test/foobar bs=1024k count=8192

filefrag -v /mnt/test/foobar  | grep -i extents
File is stored in extents format
/mnt/test/foobar: 67 extents found


http://people.redhat.com/esandeen/seekwatcher/ext4-dd-write-odirect.png

-Eric

  reply	other threads:[~2007-10-27  3:08 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-26 21:24 delalloc fragmenting files? Eric Sandeen
2007-10-26 22:19 ` Andreas Dilger
2007-10-27  2:54   ` Eric Sandeen
2007-10-27  3:08     ` Eric Sandeen [this message]
2007-10-31 21:01   ` Eric Sandeen
2007-11-01  0:35     ` Alex Tomas
2007-11-01 15:20       ` Eric Sandeen
2007-11-01 19:05         ` Eric Sandeen
2007-11-02  8:56           ` Alex Tomas
2007-11-02 15:41             ` Eric Sandeen
2007-11-04 18:36               ` Alex Tomas
2007-11-05 17:37                 ` Eric Sandeen
2007-11-05 17:39                   ` Eric Sandeen
2007-11-05 17:45                   ` Alex Tomas
2007-11-05 18:51                   ` Andreas Dilger
2007-11-05 18:54                     ` Eric Sandeen
2007-11-06 19:54                   ` Eric Sandeen
2007-11-07 20:37                     ` Andreas Dilger
2007-11-07 20:53                       ` Eric Sandeen
2007-10-29 19:13 ` Eric Sandeen

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