linux-kernel - Re: linux-next: Tree for December 9

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Message-ID: <16e59424891c03bfe31eb0898fedeac9.squirrel@neil.brown.name>
Date:	Wed, 10 Dec 2008 12:42:58 +1100 (EST)
From:	"NeilBrown" <neilb@...e.de>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	"Kay Sievers" <kay.sievers@...y.org>, sfr@...b.auug.org.au,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	adobriyan@...il.com, "Greg" <greg@...ah.com>
Subject: Re: linux-next: Tree for December 9

On Wed, December 10, 2008 12:30 pm, Andrew Morton wrote:
> On Wed, 10 Dec 2008 01:31:13 +0100 "Kay Sievers" <kay.sievers@...y.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@...ass/bdi/9:0
>> > UDEV  [1228867146.107566] remove@...ock/md0
>> > UDEV  [1228867146.111969] remove@...ass/bdi/9:0
>> > UEVENT[1228867146.119889] add@...ock/md0
>> > UEVENT[1228867146.119964] add@...ass/bdi/9:0
>> > UEVENT[1228867146.120162] remove@...ass/bdi/9:0
>> > UEVENT[1228867146.120205] remove@...ock/md0
>> > UDEV  [1228867146.122839] add@...ock/md0
>> > UDEV  [1228867146.129125] add@...ass/bdi/9:0
>> > UDEV  [1228867146.133459] remove@...ock/md0
>> > UDEV  [1228867146.137813] remove@...ass/bdi/9:0
>> > UEVENT[1228867146.145652] add@...ock/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

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