linux-kernel - Re: [Cbe-oss-dev] [regression/bisected] corrupt CD data after media change and delay

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Message-ID: <Pine.LNX.4.64.0806091721040.22138@vixen.sonytel.be>
Date:	Mon, 9 Jun 2008 17:27:26 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
cc:	David Martin <tasio@...io.net>, linux-scsi@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	Maarten Bressers <mbres@...too.org>,
	Daniel Drake <dsd@...too.org>,
	Cell Broadband Engine OSS Development 
	<cbe-oss-dev@...abs.org>
Subject: Re: [Cbe-oss-dev] [regression/bisected] corrupt CD data after media
 change and delay

	Hi James,

On Mon, 9 Jun 2008, James Bottomley wrote:
> On Mon, 2008-06-09 at 15:54 +0200, Geert Uytterhoeven wrote:
> > I managed to reproduce it on my laptop (Core 2 Duo, SATA DVD-RAM, running
> > Ubuntu 8.04 for amd64), by booting Debian's 2.6.25 kernel into recovery mode.
> > So the problem is not PS3-specific.
> > 
> > Worse, I never got an updated /sys/block/sr0/size for the second CD, not even
> > when mounting it ASAP (which is ca. 15-20 seconds after inserting it).  It
> > always stayed at the value for the first CD.
> 
> Well, we have the taxonomy.  It's something to do with the media change
> trigger.  Could you try getting the output of this patch and correlate
> the prints with your success and failure cases?

Sure!

Inserting first CD, mounting:

| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 1
                                ^
				OK

| ISO 9660 Extensions: RRIP_1991A

Unmounting first CD:

| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0

Ejecting first CD:

| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0

Inserting second CD, mounting after 30 seconds:

| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0
                                ^
				Not updated!
| ISO 9660 Extensions: Microsoft Joliet Level 3
| ISO 9660 Extensions: RRIP_1991A

=> failed!

Unmounting second CD:

| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0

Ejecting second CD:

| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0

Inserting second CD, mounting immediately:

| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| Sense Key : 0x2 [current] 
| +5+ CDS_DISC_OK
| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| +0+ the_result = 0x8000002 Sense Key : 0x0 [current] [descriptor]
| Sense Key : 0x2 [current] 
| +5+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 1
                                ^
				OK

| ISO 9660 Extensions: Microsoft Joliet Level 3
| ISO 9660 Extensions: RRIP_1991A

=> success!

Unmounting second CD:

| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +1+ CDS_DISC_OK
| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0

Ejecting second CD:

| +0+ the_result = 0x0 Sense Key : 0x0 [current] [descriptor]
| +11+ Return forcing update is 0

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

Phone:    +32 (0)2 700 8453
Fax:      +32 (0)2 700 8622
E-mail:   Geert.Uytterhoeven@...ycom.com
Internet: http://www.sony-europe.com/

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