Subject: Re: dev/scsipi/ch.c:chattach() fix ? (and approval for commit?)
To: Stoned Elipot <>
From: Bill Studenmund <>
List: tech-kern
Date: 06/16/2004 16:33:51
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On Thu, Jun 17, 2004 at 01:10:57AM +0200, Stoned Elipot wrote:
> On Thu, Jun 17, 2004 at 12:07:38AM +0200, Manuel Bouyer wrote:
> > On Wed, Jun 16, 2004 at 11:20:36PM +0200, Manuel Bouyer wrote:
> > > Hum. Can you apply the attached patch and see if there's any message =
for ch0 ?
> > > This is to make sure that this changer doesn't return any sense at al=
> Here is what it's saying:
> ch0 at scsibus1 target 4 lun 0: <QUALSTAR, RLS-4221, 0047> changer remova=
> ch0(esiop1:0:4:0): requesting sense =20
> ch0(esiop1:0:4:0):  sense debug information:
>         code 0x70 valid 0x0
                          ^^^ Looks like that's the bug. The changer isn't
			      setting 'valid'
>         seg 0x0 key 0x6 ili 0x0 eom 0x0 fmark 0x0
> info: 0x0 0x0 0x0 0x0 followed by 10 extra bytes
>         extra: 0x0 0x0 0x0 0x0 0x29 0x0 0x0 0x0 0x0 0x0

Other than the lack of the "Valid" bit, it sure looks like the unit is=20
trying to send us a Unit Attention (key 6) with ASC 0x29, which is a=20
"Power On, Reset, or Bus Device Reset Occurred" UA. Rather reasonable=20
just-started-up UA.

Not sure what quirk would cover "Valid" not being set...

Take care,


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