From mboxrd@z Thu Jan  1 00:00:00 1970
From: "NeilBrown" <neilb@suse.de>
Subject: Re: linux-next: Tree for December 9
Date: Wed, 10 Dec 2008 12:42:58 +1100 (EST)
Message-ID: <16e59424891c03bfe31eb0898fedeac9.squirrel@neil.brown.name>
References: <20081209185237.8bb715d7.sfr@canb.auug.org.au>
    <20081209153418.4628723d.akpm@linux-foundation.org>
    <ac3eb2510812091606k5615135fn87d35aaa16834ea8@mail.gmail.com>
    <20081209161511.15fe8cdb.akpm@linux-foundation.org>
    <ac3eb2510812091631j3b350ac6t9429e01171a96228@mail.gmail.com>
    <20081209173048.18382f6d.akpm@linux-foundation.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7BIT
Return-path: <linux-next-owner@vger.kernel.org>
Received: from ns.suse.de ([195.135.220.2]:43242 "EHLO mx1.suse.de"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1751448AbYLJBnJ (ORCPT <rfc822;linux-next@vger.kernel.org>);
	Tue, 9 Dec 2008 20:43:09 -0500
In-Reply-To: <20081209173048.18382f6d.akpm@linux-foundation.org>
Sender: linux-next-owner@vger.kernel.org
List-ID: <linux-next.vger.kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>, sfr@canb.auug.org.au, linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, adobriyan@gmail.com, Greg <greg@kroah.com>

On Wed, December 10, 2008 12:30 pm, Andrew Morton wrote:
> On Wed, 10 Dec 2008 01:31:13 +0100 "Kay Sievers" <kay.sievers@vrfy.org>
> wrote:
>
>> > akpm2:/home/akpm# udevmonitor
>> > udevmonitor prints the received event from the kernel [UEVENT]
>> > and the event which udev sends out after rule processing [UDEV]
>> >
>> > UDEV  [1228867146.103334] add@/class/bdi/9:0
>> > UDEV  [1228867146.107566] remove@/block/md0
>> > UDEV  [1228867146.111969] remove@/class/bdi/9:0
>> > UEVENT[1228867146.119889] add@/block/md0
>> > UEVENT[1228867146.119964] add@/class/bdi/9:0
>> > UEVENT[1228867146.120162] remove@/class/bdi/9:0
>> > UEVENT[1228867146.120205] remove@/block/md0
>> > UDEV  [1228867146.122839] add@/block/md0
>> > UDEV  [1228867146.129125] add@/class/bdi/9:0
>> > UDEV  [1228867146.133459] remove@/block/md0
>> > UDEV  [1228867146.137813] remove@/class/bdi/9:0
>> > UEVENT[1228867146.145652] add@/block/md0
>>
>> Weird loop, something is accessing /dev/md0, i guess, which creates
>> the kernel device, and the event, which accesses /dev/md0 again and it
>> goes crazy. Maybe caused by changes Neil did.
>
> I knew an Australian was to blame - it's just a matter of determining
> which one.

Let's not count our chickens .... :-)

Can you get me
   tar czvf - /lib/udev /etc/udev | mail neilb

so I can see exactly what FC6 is likely to try to do when an
md device appears or disappears?

Thanks.
NeilBrown