From owner-freebsd-scsi  Sun May  6 10:52:50 2001
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Date: Sun, 6 May 2001 11:52:44 -0600
From: "Kenneth D. Merry" <ken@kdm.org>
To: freebsd-scsi@FreeBSD.ORG
Cc: freebsd-current@FreeBSD.ORG
Subject: Re: camcontrol stop / restart broken
Message-ID: <20010506115244.A94763@panzer.kdm.org>
References: <15083.9059.887489.356984@ultrahot.Finland.Sun.COM> <20010428224047.A37268@panzer.kdm.org> <15083.65379.523173.371122@ultrahot.Finland.Sun.COM> <20010430101214.A46826@panzer.kdm.org> <200105060919.f469JrT07865@uriah.heep.sax.de>
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In-Reply-To: <200105060919.f469JrT07865@uriah.heep.sax.de>; from j@uriah.heep.sax.de on Sun, May 06, 2001 at 11:19:53AM +0200
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On Sun, May 06, 2001 at 11:19:53 +0200, J Wunsch wrote:
> [F'up changed to freebsd-scsi]
> 
> "Kenneth D. Merry" <ken@kdm.org> wrote:
> 
> > This should be fixed as of rev 1.22 of scsi_all.c.  There was an errant
> > search and replace that caused the 'start' bit in the start/stop unit to
> > always be set to 0 (stop).  So automatic spinups wouldn't work, and
> > 'camcontrol start' wouldn't work.
> 
> I've got:
> 
> uriah # cvs stat /sys/cam/scsi/scsi_all.c
> ===================================================================
> File: scsi_all.c        Status: Up-to-date
> 
>    Working revision:    1.24    Result of merge
>    Repository revision: 1.24    /home/ncvs/src/sys/cam/scsi/scsi_all.c,v
>    Sticky Tag:          (none)
>    Sticky Date:         (none)
>    Sticky Options:      (none)
> 
> ....and still have the problem that the "camcontrol start" doesn't
> work.  It returns immediately to the caller, claiming a "unit started
> successfully", while the drive hasn't started at all.

camcontrol uses scsi_start_stop() to build the start unit CDB.
scsi_start_stop() is in libcam, which compiles a number of kernel files in
userland.  (including scsi_all.c)  So you need to rebuild world to fix
camcontrol.

> Issuing a "camcontrol command daX -c '1b 0 0 0 1 0'" works.

That bypasses the CDB builder function (scsi_start_stop()), so I would
expect it to work.

> I didn't try whether the kernel-implied startup on disk access would
> work, though, since it would IMHO risk a hanging kernel and controller
> timeout.

That should work now.

Ken
-- 
Kenneth Merry
ken@kdm.org

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