linux-kernel - Re: Change request: "scsi: killing requests for dead queue"

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Date:	Wed, 18 Jan 2012 23:58:17 -0800
From:	Joe Perches <joe@...ches.com>
To:	Ulrich Windl <Ulrich.Windl@...uni-regensburg.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Change request: "scsi: killing requests for dead queue"

On Thu, 2012-01-19 at 08:30 +0100, Ulrich Windl wrote:
> Hi!
> 
> I have a change request: I saw three message that I couldn't bring into context with any other event (SLES11 SP1 (2.6.32.49-0.3-default)):
> 
> Jan 18 15:33:04 h03 kernel: [2866825.805434] scsi: killing requests for dead queue
> Jan 18 15:33:04 h03 kernel: [2866825.812129] scsi: killing requests for dead queue
> Jan 18 15:33:04 h03 kernel: [2866825.815553] scsi: killing requests for dead queue
> 
> Unfortunately the kernel message doesn't give some kind of queue identifier, so that's hard to correlate with any other events.
> 
> Can this message be improved to include some variable output?

It was improved by:

commit 745718132c3c7cac98a622b610e239dcd5217f71
Author: Hannes Reinecke <hare@...e.de>
Date:   Wed Nov 9 08:39:24 2011 +0100

    [SCSI] Silencing 'killing requests for dead queue'
    
    When we tear down a device we try to flush all outstanding
    commands in scsi_free_queue(). However the check in
    scsi_request_fn() is imperfect as it only signals that
    we _might start_ aborting commands, not that we've actually
    aborted some.
    So move the printk inside the scsi_kill_request function,
    this will also give us a hint about which commands are aborted.
    
    Signed-off-by: Hannes Reinecke <hare@...e.de>
    Signed-off-by: James Bottomley <JBottomley@...allels.com>


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