From: Jens Axboe <axboe@suse.de>
To: Akinobu Mita <mita@miraclelinux.com>
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org, okuji@enbug.org
Subject: Re: [patch 4/5] fail-injection capability for disk IO
Date: Wed, 23 Aug 2006 14:03:55 +0200 [thread overview]
Message-ID: <20060823120355.GD5893@suse.de> (raw)
In-Reply-To: <20060823113317.722640313@localhost.localdomain>
On Wed, Aug 23 2006, Akinobu Mita wrote:
> This patch provides fail-injection capability for disk IO.
>
> Boot option:
>
> fail_make_request=<probability>,<interval>,<times>,<space>
>
> <probability>
>
> specifies how often it should fail in percent.
>
> <interval>
>
> specifies the interval of failures.
>
> <times>
>
> specifies how many times failures may happen at most.
>
> <space>
>
> specifies the size of free space where disk IO can be issued
> safely in bytes.
>
> Example:
>
> fail_make_request=100,10,-1,0
>
> generic_make_request() fails once per 10 times.
Hmm dunno, seems a pretty useless feature to me. Wouldn't it make a lot
more sense to do this per-queue instead of a global entity?
--
Jens Axboe
next prev parent reply other threads:[~2006-08-23 12:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-23 11:32 [patch 0/5] RFC: fault-injection capabilities Akinobu Mita
2006-08-23 11:32 ` [patch 1/5] fail-injection library Akinobu Mita
2006-08-23 12:09 ` Andi Kleen
2006-08-23 11:32 ` [patch 2/5] fail-injection capability for kmalloc Akinobu Mita
2006-08-23 11:32 ` [patch 3/5] fail-injection capability for alloc_pages() Akinobu Mita
2006-08-23 11:32 ` [patch 4/5] fail-injection capability for disk IO Akinobu Mita
2006-08-23 12:03 ` Jens Axboe [this message]
2006-08-23 17:27 ` Andrew Morton
2006-08-23 18:01 ` Jens Axboe
2006-08-23 18:16 ` Ric Wheeler
2006-08-23 18:26 ` Jens Axboe
2006-08-23 18:22 ` Hans Reiser
2006-08-23 12:07 ` Andi Kleen
2006-08-23 12:10 ` Jens Axboe
2006-08-23 19:34 ` Mario 'BitKoenig' Holbe
2006-08-23 19:42 ` Ric Wheeler
2006-08-23 11:32 ` [patch 5/5] debugfs entries for configuration Akinobu Mita
2006-08-23 12:06 ` [patch 0/5] RFC: fault-injection capabilities Andi Kleen
2006-08-23 14:18 ` Alexey Dobriyan
2006-08-24 18:41 ` Valdis.Kletnieks
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