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

Geert Uytterhoeven
2008-06-09T15:27:26Z

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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@sonycom.com
Internet: http://www.sony-europe.com/

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