linux-kernel - Re: 2,6.26-rc4-git2 - long pause during boot

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Message-ID: <485027AC.6060901@s5r6.in-berlin.de>
Date:	Wed, 11 Jun 2008 21:29:48 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
CC:	Greg KH <greg@...ah.com>, Chris Clayton <chris2553@...glemail.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org,
	Hannes Reinecke <hare@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-usb@...r.kernel.org
Subject: Re: 2,6.26-rc4-git2 - long pause during boot

James Bottomley wrote:
> On Wed, 2008-06-11 at 12:15 -0700, Greg KH wrote:
>> On Wed, Jun 11, 2008 at 06:58:05PM +0000, Chris Clayton wrote:
>>> Jun 11 17:48:13 upstairs udevd-event[1457]: wait_for_sysfs: wait for '/sys/devices/pci0000:00/0000:00:1e.0/0000:02:0a.2/usb11/11-2/11-2:1.0/host4/ioerr_cnt' for 20 mseconds 
>>> Jun 11 17:48:18 upstairs last message repeated 236 times
>> This doesn't look good.  It looks like a udev rule in your system is
>> looking for a file that will never show up.  That's a short way to a
>> long delay time :)
>>
>> Try commenting out the rule that does this and see if things are fixed.
> 
> Actually, there's something seriously wrong here:  ioerr_cnt is a
> property of the device, not of the host (as in it will never appear
> under .../host4 but under .../host4/targetX:X:X/4:X:X:X/ioerr_cnt).
> Perhaps an investigation of why udevd-event is looking under host4/ is
> in order.

So the change which commit b0ed43360fdca227048d88a08290365cb681c1a8 
"[SCSI] add scsi_host and scsi_target to scsi_bus" introduced is leading 
the udev scripts onto a wrong trail?

(This commit was the one which Chris found by bisection, see 
http://lkml.org/lkml/2008/6/1/2)
-- 
Stefan Richter
-=====-==--- -==- -=-==
http://arcgraph.de/sr/
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