From: Eric Sandeen <sandeen@redhat.com>
To: Alex Tomas <bzzz.tomas@gmail.com>
Cc: Andreas Dilger <adilger@Sun.COM>,
ext4 development <linux-ext4@vger.kernel.org>
Subject: Re: delalloc fragmenting files?
Date: Fri, 02 Nov 2007 10:41:51 -0500 [thread overview]
Message-ID: <472B453F.8010608@redhat.com> (raw)
In-Reply-To: <472AE644.1040102@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 868 bytes --]
Alex Tomas wrote:
> Eric,
>
> would you mind to repeat the run and then grab /proc/fs/ext4/<dev>/mb_history?
>
> thanks in advance, Alex
Sure thing, attached; this is from a 1024x1M run, wound up with 32
fragments, out of order:
First block: 122880
Last block: 491519
Discontinuity: Block 7424 is at 114688 (was 130303)
Discontinuity: Block 15616 is at 106496 (was 122879)
Discontinuity: Block 23552 is at 102400 (was 114431)
Discontinuity: Block 26624 is at 155648 (was 105471)
Discontinuity: Block 33792 is at 147456 (was 162815)
Discontinuity: Block 41472 is at 162816 (was 155135)
Discontinuity: Block 42496 is at 188416 (was 163839)
Discontinuity: Block 50176 is at 180224 (was 196095)
Discontinuity: Block 58368 is at 172032 (was 188415)
Discontinuity: Block 66560 is at 167936 (was 180223)
....
pid 3695 is pdflush, I assume 7634 was the dd itself.
-Eric
[-- Attachment #2: mb_history.bz2 --]
[-- Type: application/x-bzip, Size: 6302 bytes --]
next prev parent reply other threads:[~2007-11-02 15:41 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
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 [this message]
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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