linux-kernel - Re: Slow disks.

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Message-ID: <20101227105604.GF11419@htj.dyndns.org>
Date:	Mon, 27 Dec 2010 11:56:04 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Niels <zorglub_olsen@...mail.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Slow disks.

On Sun, Dec 26, 2010 at 11:07:45PM +0100, Niels wrote:
> I have several of these drives, in various sizes. They seem to be aligned to
> 63 as you mention:
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1              63      208844      104391   83  Linux
> /dev/sda2          208845    19759949     9775552+  82  Linux swap / Solaris
> /dev/sda3        19759950   215094284    97667167+  83  Linux
> /dev/sda4       215094285   781417664   283161690   83  Linux
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1              63  1953520064   976760001   83  Linux
> 
> Is that bad?

Yes.

> What can I do to repair it?

Repartition it.

> What can I do to prevent it from happening again?

Use more recent distros.  Most distros released in the past six month
have partition utilties which honor partition alignment requirements.

Good luck.

-- 
tejun
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