NetBSD Problem Report #37866

From smb@cs.columbia.edu  Fri Jan 25 00:37:53 2008
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Date: Thu, 24 Jan 2008 19:37:47 -0500 (EST)
From: smb@cs.columbia.edu
Reply-To: smb@cs.columbia.edu
To: gnats-bugs@gnats.NetBSD.org
Subject: Thinkpad T61 disk doesn't work in AHCI mode
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>Number:         37866
>Category:       kern
>Synopsis:       Thinkpad T61 disk doesn't work in AHCI mode
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 25 00:40:00 +0000 2008
>Last-Modified:  Tue Jan 12 07:10:03 +0000 2010
>Originator:     Steven M. Bellovin
>Release:        NetBSD 4.99.49
>Organization:
Department of Computer Science, Columbia University
>Environment:


System: NetBSD yellowstone.machshav.com 4.99.49 NetBSD 4.99.49 (YELLOWSTONE) #0: Mon Jan 21 23:10:45 EST 2008 smb@yellowstone.machshav.com:/usr/BUILD/obj/sys/arch/amd64/compile/YELLOWSTONE amd64
Architecture: x86_64
Machine: amd64
>Description:
	Much of the time, if I boot my machine with the disk set in the
	BIOS to AHCI mode, it doesn't see the whole disk.  This causes
	errors in finding the NetBSD partition and the root partition,
	and if you persist you'll overwrite random parts of the disk,
	including things outside of what NetBSD should be touching.

	It is not 100% reproducbile.  In tests today, it didn't happen
	if I rebooted from power-off; it did happen if I warm-booted.
	This suggests a bug in the initialization code.
>How-To-Repeat:
	See above.
>Fix:
	Set the disk to compatibility mode in the BIOS.

>Audit-Trail:
From: Juan RP <juan@xtrarom.org>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/37866: Thinkpad T61 disk doesn't work in AHCI mode
Date: Fri, 25 Jan 2008 01:58:15 +0100

 On Fri, 25 Jan 2008 00:40:00 +0000 (UTC)
 smb@cs.columbia.edu wrote:

 > >Description:
 > 	Much of the time, if I boot my machine with the disk set in the
 > 	BIOS to AHCI mode, it doesn't see the whole disk.  This causes
 > 	errors in finding the NetBSD partition and the root partition,
 > 	and if you persist you'll overwrite random parts of the disk,
 > 	including things outside of what NetBSD should be touching.
 > 
 > 	It is not 100% reproducbile.  In tests today, it didn't happen
 > 	if I rebooted from power-off; it did happen if I warm-booted.
 > 	This suggests a bug in the initialization code.

 Perhaps you would be able to build a livecd (with mklivecd obviously)
 and append a dmesg with ata/wd debugging turned on?

 -- 
 Juan Romero Pardines             The NetBSD Project
 http://plog.xtrarom.org/         NetBSD/pkgsrc news in Spanish
 http://mklivecd.xtrarom.org/     Make your own NetBSD Live CD/DVD!

From: "Steven M. Bellovin" <smb@cs.columbia.edu>
To: gnats-bugs@NetBSD.org
Cc: juan@xtrarom.org, kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
 netbsd-bugs@NetBSD.org
Subject: Re: kern/37866: Thinkpad T61 disk doesn't work in AHCI mode
Date: Fri, 25 Jan 2008 01:04:15 +0000

 On Fri, 25 Jan 2008 01:00:06 +0000 (UTC)
 Juan RP <juan@xtrarom.org> wrote:


 >  
 >  Perhaps you would be able to build a livecd (with mklivecd obviously)
 >  and append a dmesg with ata/wd debugging turned on?
 >  
 I'll try to do that this weekend; I won't have the facilities to do
 that until then.


 		--Steve Bellovin, http://www.cs.columbia.edu/~smb

From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, 
 netbsd-bugs@netbsd.org
Subject: Re: kern/37866: Thinkpad T61 disk doesn't work in AHCI mode
Date: Thu, 24 Jan 2008 20:13:59 -0500

 smb@cs.columbia.edu wrote:
 >> Description:
 > 	Much of the time, if I boot my machine with the disk set in the
 > 	BIOS to AHCI mode, it doesn't see the whole disk.  This causes
 > 	errors in finding the NetBSD partition and the root partition,
 > 	and if you persist you'll overwrite random parts of the disk,
 > 	including things outside of what NetBSD should be touching.
 > 
 > 	It is not 100% reproducbile.  In tests today, it didn't happen
 > 	if I rebooted from power-off; it did happen if I warm-booted.
 > 	This suggests a bug in the initialization code.

 Please confirm that you are running the latest firmware from Lenovo.

 Jared

From: "Steven M. Bellovin" <smb@cs.columbia.edu>
To: gnats-bugs@NetBSD.org
Cc: jmcneill@invisible.ca, kern-bug-people@NetBSD.org,
 gnats-admin@NetBSD.org, netbsd-bugs@NetBSD.org
Subject: Re: kern/37866: Thinkpad T61 disk doesn't work in AHCI mode
Date: Fri, 25 Jan 2008 03:35:48 +0000

 On Fri, 25 Jan 2008 01:15:03 +0000 (UTC)
 "Jared D. McNeill" <jmcneill@invisible.ca> wrote:

 > The following reply was made to PR kern/37866; it has been noted by
 > GNATS.
 > 
 > From: "Jared D. McNeill" <jmcneill@invisible.ca>
 > To: gnats-bugs@NetBSD.org
 > Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org, 
 >  netbsd-bugs@netbsd.org
 > Subject: Re: kern/37866: Thinkpad T61 disk doesn't work in AHCI mode
 > Date: Thu, 24 Jan 2008 20:13:59 -0500
 > 
 >  smb@cs.columbia.edu wrote:
 >  >> Description:
 >  > 	Much of the time, if I boot my machine with the disk set
 >  > in the BIOS to AHCI mode, it doesn't see the whole disk.  This
 >  > causes errors in finding the NetBSD partition and the root
 >  > partition, and if you persist you'll overwrite random parts of the
 >  > disk, including things outside of what NetBSD should be touching.
 >  > 
 >  > 	It is not 100% reproducbile.  In tests today, it didn't
 >  > happen if I rebooted from power-off; it did happen if I
 >  > warm-booted. This suggests a bug in the initialization code.
 >  
 >  Please confirm that you are running the latest firmware from Lenovo.
 >  
 I just updated -- I still see the problem.  


 		--Steve Bellovin, http://www.cs.columbia.edu/~smb

From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org, netbsd-bugs@NetBSD.org
Subject: Re: kern/37866: Thinkpad T61 disk doesn't work in AHCI mode
Date: Fri, 25 Jan 2008 22:02:57 +0100

 On Fri, Jan 25, 2008 at 12:40:00AM +0000, smb@cs.columbia.edu wrote:
 > >Number:         37866
 > >Category:       kern
 > >Synopsis:       Thinkpad T61 disk doesn't work in AHCI mode
 > >Confidential:   no
 > >Severity:       serious
 > >Priority:       medium
 > >Responsible:    kern-bug-people
 > >State:          open
 > >Class:          sw-bug
 > >Submitter-Id:   net
 > >Arrival-Date:   Fri Jan 25 00:40:00 +0000 2008
 > >Originator:     Steven M. Bellovin
 > >Release:        NetBSD 4.99.49
 > >Organization:
 > Department of Computer Science, Columbia University
 > >Environment:
 > 	
 > 	
 > System: NetBSD yellowstone.machshav.com 4.99.49 NetBSD 4.99.49 (YELLOWSTONE) #0: Mon Jan 21 23:10:45 EST 2008 smb@yellowstone.machshav.com:/usr/BUILD/obj/sys/arch/amd64/compile/YELLOWSTONE amd64
 > Architecture: x86_64
 > Machine: amd64
 > >Description:
 > 	Much of the time, if I boot my machine with the disk set in the
 > 	BIOS to AHCI mode, it doesn't see the whole disk.  This causes
 > 	errors in finding the NetBSD partition and the root partition,
 > 	and if you persist you'll overwrite random parts of the disk,
 > 	including things outside of what NetBSD should be touching.
 > 
 > 	It is not 100% reproducbile.  In tests today, it didn't happen
 > 	if I rebooted from power-off; it did happen if I warm-booted.
 > 	This suggests a bug in the initialization code.

 This is a known issue, and it's most probably timing-related in
 the PHY setup code (probably between the "link up" and the IDENTIFY
 command). unfortunably I can't reproduce this issue on my systems.

 -- 
 Manuel Bouyer <bouyer@antioche.eu.org>
      NetBSD: 26 ans d'experience feront toujours la difference
 --

From: David Holland <dholland-bugs@netbsd.org>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/37866: real disks sometimes probe as very small ST506
	disks
Date: Tue, 12 Jan 2010 07:09:49 +0000

 See also 37848, which I just closed as a duplicate.

 -- 
 David A. Holland
 dholland@netbsd.org

>Unformatted:

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