From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: Johannes Weiner <hnazfoo@googlemail.com>
Cc: linux-kernel@vger.kernel.org, Patrick Mau <mau@oscar.ping.de>
Subject: Re: Question about "Not Ready" SCSI error
Date: Mon, 31 Jul 2006 01:22:06 +0200 [thread overview]
Message-ID: <44CD3F1E.1010101@s5r6.in-berlin.de> (raw)
In-Reply-To: <20060730215257.GA8339@leiferikson.dystopia.lan>
Johannes Weiner wrote:
> On Sun, Jul 30, 2006 at 08:10:19PM +0200, Patrick Mau wrote:
>> Google revealed[1] that the drive is waiting for a START UNIT command,
>> but it seems that the kernel is not attempting to spin up the drive
>> again.
>
> I don't know exactly if it's enough to requeue the scsi command, please
> comment on this, guys.
AFAIU, the scsi_eh (error handler) already has proper code for exactly
this purpose, but the code is inactive. Any driver (SCSI low-level
driver or SCSI command set driver) can activate it by setting
scsi_device->allow_restart = 1.
Brian King posted a patch which lets you enable that flag at runtime:
"scsi: Add allow_restart sysfs class attribute", 2006-06-27
http://marc.theaimsgroup.com/?l=linux-scsi&m=115142503103468
The patch is in Linus' tree now.
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=history;f=drivers/scsi/sd.c
--
Stefan Richter
-=====-=-==- -=== =====
http://arcgraph.de/sr/
next prev parent reply other threads:[~2006-07-30 23:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-30 18:10 Question about "Not Ready" SCSI error Patrick Mau
2006-07-30 21:52 ` Johannes Weiner
2006-07-30 23:22 ` Stefan Richter [this message]
2006-07-30 22:28 ` Johannes Weiner
2006-07-31 23:13 ` Philippe Troin
2006-08-01 5:56 ` Stefan Richter
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