linux-kernel - Re: [2.6.37-rc1] udevd-event prints errors.

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Date:	Sat, 6 Nov 2010 23:51:31 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	kay.sievers@...y.org
Cc:	gregkh@...e.de, cbouatmailru@...il.com, ak@...ux.intel.com,
	axboe@...nel.dk, shemminger@...tta.com, ebiederm@...ssion.com,
	stern@...land.harvard.edu, James.Bottomley@...e.de,
	akpm@...ux-foundation.org, kuznet@....inr.ac.ru,
	randy.dunlap@...cle.com, tj@...nel.org, davem@...emloft.net,
	perex@...ex.cz, tiwai@...e.de, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, dhowells@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6.37-rc1] udevd-event prints errors.

Hello.

Kay Sievers wrote:
> >> Other than that, everything works ok, right?
> > Right.
> 
> It's something that should be fixed in the udev rules. This is the
> fixed line, we used in later releases. It adds an additional match to
> prevent the warning you see:
>   SUBSYSTEM=="scsi", KERNEL=="[0-9]*:[0-9]*", WAIT_FOR_SYSFS="ioerr_cnt"
> 
> All of that is not needed with current kernels, it was a hacky
> workaround for broken sysfs/event timing issues we had years ago.

I see.
Applying below patch solved these error messages on my CentOS 5.5 environment.

Thank you.

--- /etc/udev/rules.d/05-udev-early.rules
+++ /etc/udev/rules.d/05-udev-early.rules
@@ -1,7 +1,7 @@
 # sysfs is populated after the event is sent
 ACTION=="add", DEVPATH=="/devices/*", ENV{PHYSDEVBUS}=="?*", WAIT_FOR_SYSFS="bus"
 ACTION=="add", SUBSYSTEM=="net", WAIT_FOR_SYSFS="address"
-ACTION=="add", SUBSYSTEM=="scsi", WAIT_FOR_SYSFS="ioerr_cnt"                    
+ACTION=="add", SUBSYSTEM=="scsi", KERNEL=="[0-9]*:[0-9]*", WAIT_FOR_SYSFS="ioerr_cnt"
 
 # ignore these events until someone needs them
 SUBSYSTEM=="drivers",		OPTIONS="ignore_device"
--
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