LinuxLists.cc - extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

2008-02-25 19:15:28

Subject: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Hello,

I have two DVD drives, one connected to the SATA port (LG) the other to the
IDE port (PHILIPS) of a via chipset.
They are driven by VIA SATA support (SATA_VIA) and VIA PATA support
(PATA_VIA).

When I write an iso image to the drive on the SATA port /dev/sr0 it has some
extra bytes on disk which make the disk unreadable.
Writing to the IDE drive /dev/sr1 works well.

A simple test with a DVD RAM and dd instead of growisofs

dd if=/dev/zero of=/dev/srX bs=1024k count=10

and a readback afterwards

dd if=/dev/srX of=imageX.bin bs=1024k count=10

gives me an all zero file from the IDE drive but a file
full of probably scsi commands for the SATA drive and looks like

00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00 |*.......@.......|
00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00 |*...............|
00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00 |........*.......|
00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00 00 |@...............|
00061030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00 |........*.......|
00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00 00 |@...............|
00081030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00 |........*....B..|
000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00 00 |@....B..........|
000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00 |........*.......|
000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00 00 |@...............|
000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

I really need some hints to make the SATA drive usable, please.

best Regards
Gerold

uname -a
Linux blaubaer 2.6.24.2 #4 Sun Feb 24 21:50:21 CET 2008 x86_64 AMD Athlon(tm)
64 Processor 3400+ AuthenticAMD GNU/Linux

lspvi -v

00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
Controller (rev 80)
Subsystem: ASUSTeK Computer Inc. A7V600/K8V Deluxe/K8V-X/A8V Deluxe
motherboard
Flags: bus master, medium devsel, latency 64, IRQ 20
I/O ports at e800 [size=8]
I/O ports at e400 [size=4]
I/O ports at e000 [size=8]
I/O ports at d800 [size=4]
I/O ports at d400 [size=16]
I/O ports at d000 [size=256]
Capabilities: [c0] Power Management version 2
Kernel driver in use: sata_via

00:0f.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a
[Master SecP PriP])
Subsystem: ASUSTeK Computer Inc. A7V600/K8V-X/A8V Deluxe motherboard
Flags: bus master, medium devsel, latency 32, IRQ 20
[virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
[virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
[virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
I/O ports at fc00 [size=16]
Capabilities: [c0] Power Management version 2
Kernel driver in use: pata_via

cat /var/log/messages

Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: version 2.3
Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20 (level,
low) -> IRQ 20
Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: routed to hard irq line 10
Feb 25 18:20:57 blaubaer scsi3 : sata_via
Feb 25 18:20:57 blaubaer scsi4 : sata_via
Feb 25 18:20:57 blaubaer ata4: SATA max UDMA/133 cmd 0xe800 ctl 0xe400 bmdma
0xd400 irq 20
Feb 25 18:20:57 blaubaer ata5: SATA max UDMA/133 cmd 0xe000 ctl 0xd800 bmdma
0xd408 irq 20
Feb 25 18:20:57 blaubaer ata4: SATA link down 1.5 Gbps (SStatus 0 SControl
300)
Feb 25 18:20:57 blaubaer ata5: SATA link up 1.5 Gbps (SStatus 113 SControl
300)
Feb 25 18:20:57 blaubaer ata5.00: ATAPI: HL-DT-ST DVDRAM GH20NS10, EL00, max
UDMA/100
Feb 25 18:20:57 blaubaer ata5.00: configured for UDMA/100
Feb 25 18:20:57 blaubaer scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM
GH20NS10 EL00 PQ: 0 ANSI: 5
Feb 25 18:20:57 blaubaer sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
xa/form2 cdda tray
Feb 25 18:20:57 blaubaer Uniform CD-ROM driver Revision: 3.20
Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi CD-ROM sr0
Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi generic sg2 type 5
Feb 25 18:20:57 blaubaer pata_via 0000:00:0f.1: version 0.3.3
Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.1[A] -> GSI 20 (level,
low) -> IRQ 20
Feb 25 18:20:57 blaubaer scsi5 : pata_via
Feb 25 18:20:57 blaubaer scsi6 : pata_via
Feb 25 18:20:57 blaubaer ata6: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma
0xfc00 irq 14
Feb 25 18:20:57 blaubaer ata7: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma
0xfc08 irq 15
Feb 25 18:20:57 blaubaer ata6.00: ATAPI: PHILIPS SPD2411P, BP01, max UDMA/66
Feb 25 18:20:57 blaubaer ata6.00: limited to UDMA/33 due to 40-wire cable
Feb 25 18:20:57 blaubaer ata6.00: configured for UDMA/33
Feb 25 18:20:57 blaubaer scsi 5:0:0:0: CD-ROM PHILIPS SPD2411P
BP01 PQ: 0 ANSI: 5
Feb 25 18:20:57 blaubaer sr1: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
xa/form2 cdda tray
Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi CD-ROM sr1
Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi generic sg3 type 5

2008-02-25 23:34:33

by Andrew Morton

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

On Mon, 25 Feb 2008 20:05:22 +0100 Gerold Jury <[email protected]> wrote:

> Hello,
>
> I have two DVD drives, one connected to the SATA port (LG) the other to the
> IDE port (PHILIPS) of a via chipset.
> They are driven by VIA SATA support (SATA_VIA) and VIA PATA support
> (PATA_VIA).
>
> When I write an iso image to the drive on the SATA port /dev/sr0 it has some
> extra bytes on disk which make the disk unreadable.
> Writing to the IDE drive /dev/sr1 works well.
>
> A simple test with a DVD RAM and dd instead of growisofs
>
> dd if=/dev/zero of=/dev/srX bs=1024k count=10
>
> and a readback afterwards
>
> dd if=/dev/srX of=imageX.bin bs=1024k count=10
>
> gives me an all zero file from the IDE drive but a file
> full of probably scsi commands for the SATA drive and looks like
>
> 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
> 00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00 |*.......@.......|
> 00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00 |*...............|
> 00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00 |........*.......|
> 00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00 00 |@...............|
> 00061030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00 |........*.......|
> 00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00 00 |@...............|
> 00081030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00 |........*....B..|
> 000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00 00 |@....B..........|
> 000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00 |........*.......|
> 000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00 00 |@...............|
> 000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
>
> I really need some hints to make the SATA drive usable, please.
>

(added linux-ide)

Did any earlier kernel work OK? 2.6.22?

Thanks.

>
> uname -a
> Linux blaubaer 2.6.24.2 #4 Sun Feb 24 21:50:21 CET 2008 x86_64 AMD Athlon(tm)
> 64 Processor 3400+ AuthenticAMD GNU/Linux
>
> lspvi -v
>
> 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
> Controller (rev 80)
> Subsystem: ASUSTeK Computer Inc. A7V600/K8V Deluxe/K8V-X/A8V Deluxe
> motherboard
> Flags: bus master, medium devsel, latency 64, IRQ 20
> I/O ports at e800 [size=8]
> I/O ports at e400 [size=4]
> I/O ports at e000 [size=8]
> I/O ports at d800 [size=4]
> I/O ports at d400 [size=16]
> I/O ports at d000 [size=256]
> Capabilities: [c0] Power Management version 2
> Kernel driver in use: sata_via
>
> 00:0f.1 IDE interface: VIA Technologies, Inc.
> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a
> [Master SecP PriP])
> Subsystem: ASUSTeK Computer Inc. A7V600/K8V-X/A8V Deluxe motherboard
> Flags: bus master, medium devsel, latency 32, IRQ 20
> [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
> [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
> [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
> [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
> I/O ports at fc00 [size=16]
> Capabilities: [c0] Power Management version 2
> Kernel driver in use: pata_via
>
> cat /var/log/messages
>
> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: version 2.3
> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20 (level,
> low) -> IRQ 20
> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: routed to hard irq line 10
> Feb 25 18:20:57 blaubaer scsi3 : sata_via
> Feb 25 18:20:57 blaubaer scsi4 : sata_via
> Feb 25 18:20:57 blaubaer ata4: SATA max UDMA/133 cmd 0xe800 ctl 0xe400 bmdma
> 0xd400 irq 20
> Feb 25 18:20:57 blaubaer ata5: SATA max UDMA/133 cmd 0xe000 ctl 0xd800 bmdma
> 0xd408 irq 20
> Feb 25 18:20:57 blaubaer ata4: SATA link down 1.5 Gbps (SStatus 0 SControl
> 300)
> Feb 25 18:20:57 blaubaer ata5: SATA link up 1.5 Gbps (SStatus 113 SControl
> 300)
> Feb 25 18:20:57 blaubaer ata5.00: ATAPI: HL-DT-ST DVDRAM GH20NS10, EL00, max
> UDMA/100
> Feb 25 18:20:57 blaubaer ata5.00: configured for UDMA/100
> Feb 25 18:20:57 blaubaer scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM
> GH20NS10 EL00 PQ: 0 ANSI: 5
> Feb 25 18:20:57 blaubaer sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
> xa/form2 cdda tray
> Feb 25 18:20:57 blaubaer Uniform CD-ROM driver Revision: 3.20
> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi CD-ROM sr0
> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi generic sg2 type 5
> Feb 25 18:20:57 blaubaer pata_via 0000:00:0f.1: version 0.3.3
> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.1[A] -> GSI 20 (level,
> low) -> IRQ 20
> Feb 25 18:20:57 blaubaer scsi5 : pata_via
> Feb 25 18:20:57 blaubaer scsi6 : pata_via
> Feb 25 18:20:57 blaubaer ata6: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma
> 0xfc00 irq 14
> Feb 25 18:20:57 blaubaer ata7: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma
> 0xfc08 irq 15
> Feb 25 18:20:57 blaubaer ata6.00: ATAPI: PHILIPS SPD2411P, BP01, max UDMA/66
> Feb 25 18:20:57 blaubaer ata6.00: limited to UDMA/33 due to 40-wire cable
> Feb 25 18:20:57 blaubaer ata6.00: configured for UDMA/33
> Feb 25 18:20:57 blaubaer scsi 5:0:0:0: CD-ROM PHILIPS SPD2411P
> BP01 PQ: 0 ANSI: 5
> Feb 25 18:20:57 blaubaer sr1: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
> xa/form2 cdda tray
> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi CD-ROM sr1
> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi generic sg3 type 5

2008-02-26 18:55:51

by Gerold Jury

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

It does happen with 2.6.22 too.

Do you see any known pattern in these extra bytes ?

Best Regards
Gerold

00000000 2a 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 |*.......@.......|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00 |*.......@.......|
00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00 |*...............|
00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00 |........*.......|
00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00 00 |@...............|
00061030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00 |........*.......|
00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00 00 |@...............|
00081030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00 |........*....B..|
000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00 00 |@....B..........|
000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00 |........*.......|
000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00 00 |@...............|
000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*

On Tuesday 26 February 2008 00:32:49 Andrew Morton wrote:
>On Mon, 25 Feb 2008 20:05:22 +0100 Gerold Jury <[email protected]> wrote:
>> Hello,
>>
>> I have two DVD drives, one connected to the SATA port (LG) the other to
>> the IDE port (PHILIPS) of a via chipset.
>> They are driven by VIA SATA support (SATA_VIA) and VIA PATA support
>> (PATA_VIA).
>>
>> When I write an iso image to the drive on the SATA port /dev/sr0 it has
>> some extra bytes on disk which make the disk unreadable.
>> Writing to the IDE drive /dev/sr1 works well.
>>
>> A simple test with a DVD RAM and dd instead of growisofs
>>
>> dd if=/dev/zero of=/dev/srX bs=1024k count=10
>>
>> and a readback afterwards
>>
>> dd if=/dev/srX of=imageX.bin bs=1024k count=10
>>
>> gives me an all zero file from the IDE drive but a file
>> full of probably scsi commands for the SATA drive and looks like
>>
>> 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> |................| *
>> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00
>> |*....@..@....@..| 00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 |................| *
>> 00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00
>> |*.......@.......| 00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 |................| *
>> 00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00
>> |*...............| 00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 |................| *
>> 00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00
>> |........*.......| 00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00
>> 00 |@...............| 00061030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................| *
>> 00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00
>> |........*.......| 00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00
>> 00 |@...............| 00081030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................| *
>> 000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00
>> |........*....B..| 000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00
>> 00 |@....B..........| 000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................| *
>> 000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00
>> |........*.......| 000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00
>> 00 |@...............| 000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................|
>>
>> I really need some hints to make the SATA drive usable, please.
>
>(added linux-ide)
>
>Did any earlier kernel work OK? 2.6.22?
>
>Thanks.
>
>> uname -a
>> Linux blaubaer 2.6.24.2 #4 Sun Feb 24 21:50:21 CET 2008 x86_64 AMD
>> Athlon(tm) 64 Processor 3400+ AuthenticAMD GNU/Linux
>>
>> lspvi -v
>>
>> 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
>> Controller (rev 80)
>> Subsystem: ASUSTeK Computer Inc. A7V600/K8V Deluxe/K8V-X/A8V
>> Deluxe motherboard
>> Flags: bus master, medium devsel, latency 64, IRQ 20
>> I/O ports at e800 [size=8]
>> I/O ports at e400 [size=4]
>> I/O ports at e000 [size=8]
>> I/O ports at d800 [size=4]
>> I/O ports at d400 [size=16]
>> I/O ports at d000 [size=256]
>> Capabilities: [c0] Power Management version 2
>> Kernel driver in use: sata_via
>>
>> 00:0f.1 IDE interface: VIA Technologies, Inc.
>> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if
>> 8a [Master SecP PriP])
>> Subsystem: ASUSTeK Computer Inc. A7V600/K8V-X/A8V Deluxe
>> motherboard Flags: bus master, medium devsel, latency 32, IRQ 20
>> [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
>> [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
>> [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
>> [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
>> I/O ports at fc00 [size=16]
>> Capabilities: [c0] Power Management version 2
>> Kernel driver in use: pata_via
>>
>> cat /var/log/messages
>>
>> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: version 2.3
>> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20
>> (level, low) -> IRQ 20
>> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: routed to hard irq line 10
>> Feb 25 18:20:57 blaubaer scsi3 : sata_via
>> Feb 25 18:20:57 blaubaer scsi4 : sata_via
>> Feb 25 18:20:57 blaubaer ata4: SATA max UDMA/133 cmd 0xe800 ctl 0xe400
>> bmdma 0xd400 irq 20
>> Feb 25 18:20:57 blaubaer ata5: SATA max UDMA/133 cmd 0xe000 ctl 0xd800
>> bmdma 0xd408 irq 20
>> Feb 25 18:20:57 blaubaer ata4: SATA link down 1.5 Gbps (SStatus 0 SControl
>> 300)
>> Feb 25 18:20:57 blaubaer ata5: SATA link up 1.5 Gbps (SStatus 113 SControl
>> 300)
>> Feb 25 18:20:57 blaubaer ata5.00: ATAPI: HL-DT-ST DVDRAM GH20NS10, EL00,
>> max UDMA/100
>> Feb 25 18:20:57 blaubaer ata5.00: configured for UDMA/100
>> Feb 25 18:20:57 blaubaer scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM
>> GH20NS10 EL00 PQ: 0 ANSI: 5
>> Feb 25 18:20:57 blaubaer sr0: scsi3-mmc drive: 48x/48x writer dvd-ram
>> cd/rw xa/form2 cdda tray
>> Feb 25 18:20:57 blaubaer Uniform CD-ROM driver Revision: 3.20
>> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi CD-ROM sr0
>> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi generic sg2 type 5
>> Feb 25 18:20:57 blaubaer pata_via 0000:00:0f.1: version 0.3.3
>> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.1[A] -> GSI 20
>> (level, low) -> IRQ 20
>> Feb 25 18:20:57 blaubaer scsi5 : pata_via
>> Feb 25 18:20:57 blaubaer scsi6 : pata_via
>> Feb 25 18:20:57 blaubaer ata6: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma
>> 0xfc00 irq 14
>> Feb 25 18:20:57 blaubaer ata7: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma
>> 0xfc08 irq 15
>> Feb 25 18:20:57 blaubaer ata6.00: ATAPI: PHILIPS SPD2411P, BP01, max
>> UDMA/66 Feb 25 18:20:57 blaubaer ata6.00: limited to UDMA/33 due to
>> 40-wire cable Feb 25 18:20:57 blaubaer ata6.00: configured for UDMA/33
>> Feb 25 18:20:57 blaubaer scsi 5:0:0:0: CD-ROM PHILIPS SPD2411P
>> BP01 PQ: 0 ANSI: 5
>> Feb 25 18:20:57 blaubaer sr1: scsi3-mmc drive: 48x/48x writer dvd-ram
>> cd/rw xa/form2 cdda tray
>> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi CD-ROM sr1
>> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi generic sg3 type 5

2008-02-28 07:30:55

by Mike Galbraith

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

On Mon, 2008-02-25 at 20:05 +0100, Gerold Jury wrote:
> Hello,

Hi,

> I have two DVD drives, one connected to the SATA port (LG) the other to the
> IDE port (PHILIPS) of a via chipset.
> They are driven by VIA SATA support (SATA_VIA) and VIA PATA support
> (PATA_VIA).
>
> When I write an iso image to the drive on the SATA port /dev/sr0 it has some
> extra bytes on disk which make the disk unreadable.
> Writing to the IDE drive /dev/sr1 works well.

I take it kernels < 2.6.23 are known to be functional? If so, a git
bisect should be really easy if you're a git user _and_ the breakage is
in drivers/ata/sata_via.c, there are only two meaningful commits
involved.

homer:..git/linux-2.6 # git bisect start -- drivers/ata/sata_via.c
homer:..git/linux-2.6 # git bisect good v2.6.22
homer:..git/linux-2.6 # git bisect bad v2.6.23
Bisecting: 2 revisions left to test after this

A full bisection would take quite a few more builds.

(I haven't noticed anybody else reporting similar troubles, and quite a
lot of time has passed since 2.6.22 was released.. that makes me
suspicious of your hardware)

Maybe you should post again, and add cc's to [email protected]
and [email protected], perhaps someone there can give you a
better idea.

> A simple test with a DVD RAM and dd instead of growisofs
>
> dd if=/dev/zero of=/dev/srX bs=1024k count=10
>
> and a readback afterwards
>
> dd if=/dev/srX of=imageX.bin bs=1024k count=10
>
> gives me an all zero file from the IDE drive but a file
> full of probably scsi commands for the SATA drive and looks like
>
> 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
> 00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00 |*.......@.......|
> 00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00 |*...............|
> 00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00 |........*.......|
> 00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00 00 |@...............|
> 00061030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00 |........*.......|
> 00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00 00 |@...............|
> 00081030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00 |........*....B..|
> 000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00 00 |@....B..........|
> 000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00 |........*.......|
> 000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00 00 |@...............|
> 000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
>
> I really need some hints to make the SATA drive usable, please.
>
> best Regards
> Gerold
>
>
> uname -a
> Linux blaubaer 2.6.24.2 #4 Sun Feb 24 21:50:21 CET 2008 x86_64 AMD Athlon(tm)
> 64 Processor 3400+ AuthenticAMD GNU/Linux
>
> lspvi -v
>
> 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
> Controller (rev 80)
> Subsystem: ASUSTeK Computer Inc. A7V600/K8V Deluxe/K8V-X/A8V Deluxe
> motherboard
> Flags: bus master, medium devsel, latency 64, IRQ 20
> I/O ports at e800 [size=8]
> I/O ports at e400 [size=4]
> I/O ports at e000 [size=8]
> I/O ports at d800 [size=4]
> I/O ports at d400 [size=16]
> I/O ports at d000 [size=256]
> Capabilities: [c0] Power Management version 2
> Kernel driver in use: sata_via
>
> 00:0f.1 IDE interface: VIA Technologies, Inc.
> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a
> [Master SecP PriP])
> Subsystem: ASUSTeK Computer Inc. A7V600/K8V-X/A8V Deluxe motherboard
> Flags: bus master, medium devsel, latency 32, IRQ 20
> [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
> [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
> [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
> [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
> I/O ports at fc00 [size=16]
> Capabilities: [c0] Power Management version 2
> Kernel driver in use: pata_via
>
> cat /var/log/messages
>
> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: version 2.3
> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20 (level,
> low) -> IRQ 20
> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: routed to hard irq line 10
> Feb 25 18:20:57 blaubaer scsi3 : sata_via
> Feb 25 18:20:57 blaubaer scsi4 : sata_via
> Feb 25 18:20:57 blaubaer ata4: SATA max UDMA/133 cmd 0xe800 ctl 0xe400 bmdma
> 0xd400 irq 20
> Feb 25 18:20:57 blaubaer ata5: SATA max UDMA/133 cmd 0xe000 ctl 0xd800 bmdma
> 0xd408 irq 20
> Feb 25 18:20:57 blaubaer ata4: SATA link down 1.5 Gbps (SStatus 0 SControl
> 300)
> Feb 25 18:20:57 blaubaer ata5: SATA link up 1.5 Gbps (SStatus 113 SControl
> 300)
> Feb 25 18:20:57 blaubaer ata5.00: ATAPI: HL-DT-ST DVDRAM GH20NS10, EL00, max
> UDMA/100
> Feb 25 18:20:57 blaubaer ata5.00: configured for UDMA/100
> Feb 25 18:20:57 blaubaer scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM
> GH20NS10 EL00 PQ: 0 ANSI: 5
> Feb 25 18:20:57 blaubaer sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
> xa/form2 cdda tray
> Feb 25 18:20:57 blaubaer Uniform CD-ROM driver Revision: 3.20
> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi CD-ROM sr0
> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi generic sg2 type 5
> Feb 25 18:20:57 blaubaer pata_via 0000:00:0f.1: version 0.3.3
> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.1[A] -> GSI 20 (level,
> low) -> IRQ 20
> Feb 25 18:20:57 blaubaer scsi5 : pata_via
> Feb 25 18:20:57 blaubaer scsi6 : pata_via
> Feb 25 18:20:57 blaubaer ata6: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma
> 0xfc00 irq 14
> Feb 25 18:20:57 blaubaer ata7: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma
> 0xfc08 irq 15
> Feb 25 18:20:57 blaubaer ata6.00: ATAPI: PHILIPS SPD2411P, BP01, max UDMA/66
> Feb 25 18:20:57 blaubaer ata6.00: limited to UDMA/33 due to 40-wire cable
> Feb 25 18:20:57 blaubaer ata6.00: configured for UDMA/33
> Feb 25 18:20:57 blaubaer scsi 5:0:0:0: CD-ROM PHILIPS SPD2411P
> BP01 PQ: 0 ANSI: 5
> Feb 25 18:20:57 blaubaer sr1: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw
> xa/form2 cdda tray
> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi CD-ROM sr1
> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi generic sg3 type 5
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/

2008-02-29 21:57:12

by Gerold Jury

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

The oldest kernel that i tried is now 2.6.18 and behaves the same as all the
others up to 2.6.24.2.
I did the tests on 2.6.18 in runlevel 1 with only udevd running to make sure
no other program is sending any commands to the drive.

I am suspicious about the LG hardware as well so i hooked it to the friendly
windows pc in the neighborhood but it works quite well there.

The SATA port the LG drive is connected to, was previously occupied by a
maxtor harddrive and did it's work without troubles.

Does anybody know a possible meaning of the byte sequence
2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00
in the context of scsi dvd writing

Regards
Gerold

On Thursday 28 February 2008 08:30:44 Mike Galbraith wrote:
>On Mon, 2008-02-25 at 20:05 +0100, Gerold Jury wrote:
>> Hello,
>
>Hi,
>
>> I have two DVD drives, one connected to the SATA port (LG) the other to
>> the IDE port (PHILIPS) of a via chipset.
>> They are driven by VIA SATA support (SATA_VIA) and VIA PATA support
>> (PATA_VIA).
>>
>> When I write an iso image to the drive on the SATA port /dev/sr0 it has
>> some extra bytes on disk which make the disk unreadable.
>> Writing to the IDE drive /dev/sr1 works well.
>
>I take it kernels < 2.6.23 are known to be functional? If so, a git
>bisect should be really easy if you're a git user _and_ the breakage is
>in drivers/ata/sata_via.c, there are only two meaningful commits
>involved.
>
>homer:..git/linux-2.6 # git bisect start -- drivers/ata/sata_via.c
>homer:..git/linux-2.6 # git bisect good v2.6.22
>homer:..git/linux-2.6 # git bisect bad v2.6.23
>Bisecting: 2 revisions left to test after this
>
>A full bisection would take quite a few more builds.
>
>(I haven't noticed anybody else reporting similar troubles, and quite a
>lot of time has passed since 2.6.22 was released.. that makes me
>suspicious of your hardware)
>
>Maybe you should post again, and add cc's to [email protected]
>and [email protected], perhaps someone there can give you a
>better idea.
>
>> A simple test with a DVD RAM and dd instead of growisofs
>>
>> dd if=/dev/zero of=/dev/srX bs=1024k count=10
>>
>> and a readback afterwards
>>
>> dd if=/dev/srX of=imageX.bin bs=1024k count=10
>>
>> gives me an all zero file from the IDE drive but a file
>> full of probably scsi commands for the SATA drive and looks like
>>
>> 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> |................| *
>> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00
>> |*....@..@....@..| 00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 |................| *
>> 00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00
>> |*.......@.......| 00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 |................| *
>> 00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00
>> |*...............| 00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 |................| *
>> 00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00
>> |........*.......| 00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00
>> 00 |@...............| 00061030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................| *
>> 00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00
>> |........*.......| 00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00
>> 00 |@...............| 00081030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................| *
>> 000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00
>> |........*....B..| 000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00
>> 00 |@....B..........| 000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................| *
>> 000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00
>> |........*.......| 000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00
>> 00 |@...............| 000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00
>> 00 00 00 |................|
>>
>> I really need some hints to make the SATA drive usable, please.
>>
>> best Regards
>> Gerold
>>
>>
>> uname -a
>> Linux blaubaer 2.6.24.2 #4 Sun Feb 24 21:50:21 CET 2008 x86_64 AMD
>> Athlon(tm) 64 Processor 3400+ AuthenticAMD GNU/Linux
>>
>> lspvi -v
>>
>> 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
>> Controller (rev 80)
>> Subsystem: ASUSTeK Computer Inc. A7V600/K8V Deluxe/K8V-X/A8V
>> Deluxe motherboard
>> Flags: bus master, medium devsel, latency 64, IRQ 20
>> I/O ports at e800 [size=8]
>> I/O ports at e400 [size=4]
>> I/O ports at e000 [size=8]
>> I/O ports at d800 [size=4]
>> I/O ports at d400 [size=16]
>> I/O ports at d000 [size=256]
>> Capabilities: [c0] Power Management version 2
>> Kernel driver in use: sata_via
>>
>> 00:0f.1 IDE interface: VIA Technologies, Inc.
>> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if
>> 8a [Master SecP PriP])
>> Subsystem: ASUSTeK Computer Inc. A7V600/K8V-X/A8V Deluxe
>> motherboard Flags: bus master, medium devsel, latency 32, IRQ 20
>> [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
>> [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
>> [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
>> [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
>> I/O ports at fc00 [size=16]
>> Capabilities: [c0] Power Management version 2
>> Kernel driver in use: pata_via
>>
>> cat /var/log/messages
>>
>> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: version 2.3
>> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20
>> (level, low) -> IRQ 20
>> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: routed to hard irq line 10
>> Feb 25 18:20:57 blaubaer scsi3 : sata_via
>> Feb 25 18:20:57 blaubaer scsi4 : sata_via
>> Feb 25 18:20:57 blaubaer ata4: SATA max UDMA/133 cmd 0xe800 ctl 0xe400
>> bmdma 0xd400 irq 20
>> Feb 25 18:20:57 blaubaer ata5: SATA max UDMA/133 cmd 0xe000 ctl 0xd800
>> bmdma 0xd408 irq 20
>> Feb 25 18:20:57 blaubaer ata4: SATA link down 1.5 Gbps (SStatus 0 SControl
>> 300)
>> Feb 25 18:20:57 blaubaer ata5: SATA link up 1.5 Gbps (SStatus 113 SControl
>> 300)
>> Feb 25 18:20:57 blaubaer ata5.00: ATAPI: HL-DT-ST DVDRAM GH20NS10, EL00,
>> max UDMA/100
>> Feb 25 18:20:57 blaubaer ata5.00: configured for UDMA/100
>> Feb 25 18:20:57 blaubaer scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM
>> GH20NS10 EL00 PQ: 0 ANSI: 5
>> Feb 25 18:20:57 blaubaer sr0: scsi3-mmc drive: 48x/48x writer dvd-ram
>> cd/rw xa/form2 cdda tray
>> Feb 25 18:20:57 blaubaer Uniform CD-ROM driver Revision: 3.20
>> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi CD-ROM sr0
>> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi generic sg2 type 5
>> Feb 25 18:20:57 blaubaer pata_via 0000:00:0f.1: version 0.3.3
>> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.1[A] -> GSI 20
>> (level, low) -> IRQ 20
>> Feb 25 18:20:57 blaubaer scsi5 : pata_via
>> Feb 25 18:20:57 blaubaer scsi6 : pata_via
>> Feb 25 18:20:57 blaubaer ata6: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma
>> 0xfc00 irq 14
>> Feb 25 18:20:57 blaubaer ata7: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma
>> 0xfc08 irq 15
>> Feb 25 18:20:57 blaubaer ata6.00: ATAPI: PHILIPS SPD2411P, BP01, max
>> UDMA/66 Feb 25 18:20:57 blaubaer ata6.00: limited to UDMA/33 due to
>> 40-wire cable Feb 25 18:20:57 blaubaer ata6.00: configured for UDMA/33
>> Feb 25 18:20:57 blaubaer scsi 5:0:0:0: CD-ROM PHILIPS SPD2411P
>> BP01 PQ: 0 ANSI: 5
>> Feb 25 18:20:57 blaubaer sr1: scsi3-mmc drive: 48x/48x writer dvd-ram
>> cd/rw xa/form2 cdda tray
>> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi CD-ROM sr1
>> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi generic sg3 type 5
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to [email protected]
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at http://www.tux.org/lkml/

2008-03-01 11:54:14

by Sergey Vlasov

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

On Fri, 29 Feb 2008 22:59:11 +0100 Gerold Jury wrote:

> The oldest kernel that i tried is now 2.6.18 and behaves the same as all the
> others up to 2.6.24.2.
> I did the tests on 2.6.18 in runlevel 1 with only udevd running to make sure
> no other program is sending any commands to the drive.
>
> I am suspicious about the LG hardware as well so i hooked it to the friendly
> windows pc in the neighborhood but it works quite well there.
>
> The SATA port the LG drive is connected to, was previously occupied by a
> maxtor harddrive and did it's work without troubles.
>
> Does anybody know a possible meaning of the byte sequence
> 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00
> in the context of scsi dvd writing

0x2a is the SCSI WRITE(10) command; the following 10 bytes look like
its arguments (bytes 2-5 - logical block address, bytes 7-8 - transfer
length in blocks); last 4 bytes seem to be another copy of the logical
block address.

> >> A simple test with a DVD RAM and dd instead of growisofs
> >>
> >> dd if=/dev/zero of=/dev/srX bs=1024k count=10
> >>
> >> and a readback afterwards
> >>
> >> dd if=/dev/srX of=imageX.bin bs=1024k count=10
> >>
> >> gives me an all zero file from the IDE drive but a file
> >> full of probably scsi commands for the SATA drive

Does this happen only with DVD-RAM? Could you try with a DVD+RW disk
(these disks could also be written to with a simple "dd" after initial
formatting)?

> 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
> 00020010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00 |*.......@.......|
> 00040010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00060000 2a 00 00 00 00 c0 00 00 02 00 00 00 00 c0 00 00 |*...............|
> 00060010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00061010 00 00 00 00 00 00 00 00 2a 00 00 00 00 c2 00 00 |........*.......|
> 00061020 40 00 00 00 00 c2 00 00 00 00 00 00 00 00 00 00 |@...............|
> 00061030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 00081010 00 00 00 00 00 00 00 00 2a 00 00 00 01 02 00 00 |........*.......|
> 00081020 40 00 00 00 01 02 00 00 00 00 00 00 00 00 00 00 |@...............|
> 00081030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 000a1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 42 00 00 |........*....B..|
> 000a1020 40 00 00 00 01 42 00 00 00 00 00 00 00 00 00 00 |@....B..........|
> 000a1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
> *
> 000c1010 00 00 00 00 00 00 00 00 2a 00 00 00 01 82 00 00 |........*.......|
> 000c1020 40 00 00 00 01 82 00 00 00 00 00 00 00 00 00 00 |@...............|
> 000c1030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

Definitely looks like SCSI WRITE(10) commands, and the LBA field
corresponds to the location of the broken data (assuming 2KB block
size).

> >> uname -a
> >> Linux blaubaer 2.6.24.2 #4 Sun Feb 24 21:50:21 CET 2008 x86_64 AMD
> >> Athlon(tm) 64 Processor 3400+ AuthenticAMD GNU/Linux
> >>
> >> lspvi -v
> >>
> >> 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
> >> Controller (rev 80)
> >> Subsystem: ASUSTeK Computer Inc. A7V600/K8V Deluxe/K8V-X/A8V
> >> Deluxe motherboard
> >> Flags: bus master, medium devsel, latency 64, IRQ 20
> >> I/O ports at e800 [size=8]
> >> I/O ports at e400 [size=4]
> >> I/O ports at e000 [size=8]
> >> I/O ports at d800 [size=4]
> >> I/O ports at d400 [size=16]
> >> I/O ports at d000 [size=256]
> >> Capabilities: [c0] Power Management version 2
> >> Kernel driver in use: sata_via
> >>
> >> 00:0f.1 IDE interface: VIA Technologies, Inc.
> >> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if
> >> 8a [Master SecP PriP])
> >> Subsystem: ASUSTeK Computer Inc. A7V600/K8V-X/A8V Deluxe
> >> motherboard Flags: bus master, medium devsel, latency 32, IRQ 20
> >> [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
> >> [virtual] Memory at 000003f0 (type 3, non-prefetchable) [size=1]
> >> [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
> >> [virtual] Memory at 00000370 (type 3, non-prefetchable) [size=1]
> >> I/O ports at fc00 [size=16]
> >> Capabilities: [c0] Power Management version 2
> >> Kernel driver in use: pata_via
> >>
> >> cat /var/log/messages
> >>
> >> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: version 2.3
> >> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.0[B] -> GSI 20
> >> (level, low) -> IRQ 20
> >> Feb 25 18:20:57 blaubaer sata_via 0000:00:0f.0: routed to hard irq line 10
> >> Feb 25 18:20:57 blaubaer scsi3 : sata_via
> >> Feb 25 18:20:57 blaubaer scsi4 : sata_via
> >> Feb 25 18:20:57 blaubaer ata4: SATA max UDMA/133 cmd 0xe800 ctl 0xe400
> >> bmdma 0xd400 irq 20
> >> Feb 25 18:20:57 blaubaer ata5: SATA max UDMA/133 cmd 0xe000 ctl 0xd800
> >> bmdma 0xd408 irq 20
> >> Feb 25 18:20:57 blaubaer ata4: SATA link down 1.5 Gbps (SStatus 0 SControl
> >> 300)
> >> Feb 25 18:20:57 blaubaer ata5: SATA link up 1.5 Gbps (SStatus 113 SControl
> >> 300)
> >> Feb 25 18:20:57 blaubaer ata5.00: ATAPI: HL-DT-ST DVDRAM GH20NS10, EL00,
> >> max UDMA/100
> >> Feb 25 18:20:57 blaubaer ata5.00: configured for UDMA/100
> >> Feb 25 18:20:57 blaubaer scsi 4:0:0:0: CD-ROM HL-DT-ST DVDRAM
> >> GH20NS10 EL00 PQ: 0 ANSI: 5
> >> Feb 25 18:20:57 blaubaer sr0: scsi3-mmc drive: 48x/48x writer dvd-ram
> >> cd/rw xa/form2 cdda tray
> >> Feb 25 18:20:57 blaubaer Uniform CD-ROM driver Revision: 3.20
> >> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi CD-ROM sr0
> >> Feb 25 18:20:57 blaubaer sr 4:0:0:0: Attached scsi generic sg2 type 5
> >> Feb 25 18:20:57 blaubaer pata_via 0000:00:0f.1: version 0.3.3
> >> Feb 25 18:20:57 blaubaer ACPI: PCI Interrupt 0000:00:0f.1[A] -> GSI 20
> >> (level, low) -> IRQ 20
> >> Feb 25 18:20:57 blaubaer scsi5 : pata_via
> >> Feb 25 18:20:57 blaubaer scsi6 : pata_via
> >> Feb 25 18:20:57 blaubaer ata6: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma
> >> 0xfc00 irq 14
> >> Feb 25 18:20:57 blaubaer ata7: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma
> >> 0xfc08 irq 15
> >> Feb 25 18:20:57 blaubaer ata6.00: ATAPI: PHILIPS SPD2411P, BP01, max
> >> UDMA/66 Feb 25 18:20:57 blaubaer ata6.00: limited to UDMA/33 due to
> >> 40-wire cable Feb 25 18:20:57 blaubaer ata6.00: configured for UDMA/33
> >> Feb 25 18:20:57 blaubaer scsi 5:0:0:0: CD-ROM PHILIPS SPD2411P
> >> BP01 PQ: 0 ANSI: 5
> >> Feb 25 18:20:57 blaubaer sr1: scsi3-mmc drive: 48x/48x writer dvd-ram
> >> cd/rw xa/form2 cdda tray
> >> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi CD-ROM sr1
> >> Feb 25 18:20:57 blaubaer sr 5:0:0:0: Attached scsi generic sg3 type 5

Attachments:

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Download all attachments

2008-03-01 12:26:53

by Gerold Jury

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Yes it happens with the DVD+RW (testet with dd now) and with DVD+R

Thank you for the byte interpretation.
Now I have a hint where to start with the debugging.

Regards
Gerold

On Saturday 01 March 2008 12:53:54 Sergey Vlasov wrote:
>
>0x2a is the SCSI WRITE(10) command; the following 10 bytes look like
>its arguments (bytes 2-5 - logical block address, bytes 7-8 - transfer
>length in blocks); last 4 bytes seem to be another copy of the logical
>block address.
>
>
>Does this happen only with DVD-RAM? Could you try with a DVD+RW disk
>(these disks could also be written to with a simple "dd" after initial
>formatting)?
>

2008-03-07 08:40:33

by Tejun Heo

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Hello,

Gerold Jury wrote:
> Yes it happens with the DVD+RW (testet with dd now) and with DVD+R
>
> Thank you for the byte interpretation.
> Now I have a hint where to start with the debugging.

I've tried to reproduce the problem here but failed. Can you please try
the test with the file generated with the attached program? "genseqfile
524288 > testfile" will give you 1 meg testfile and it will give us
better idea how the data is getting corrupted.

Thanks.

--
tejun

Attachments:

genseqfile.c (170.00 B)

2008-03-07 19:06:58

by Gerold Jury

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Here it goes

And the sequence is broken at address 000e1010.

00000000 2a 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 |*.......@.......|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
00000030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
00000040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
00000050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
--- skip
0001ffc0 d0 ff d1 ff d2 ff d3 ff d4 ff d5 ff d6 ff d7 ff |................|
0001ffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
0001ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
0001fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
00020010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
00020020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
00020030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
00020040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
00020050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
00020060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip
0003ffc0 d0 ff d1 ff d2 ff d3 ff d4 ff d5 ff d6 ff d7 ff |................|
0003ffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
0003ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
0003fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
00040000 2a 00 00 00 00 80 00 00 40 00 00 00 00 80 00 00 |*.......@.......|
00040010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
00040020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
00040030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
00040040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
00040050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
00040060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip
0005ffb0 c8 ff c9 ff ca ff cb ff cc ff cd ff ce ff cf ff |................|
0005ffc0 d0 ff d1 ff d2 ff d3 ff d4 ff d5 ff d6 ff d7 ff |................|
0005ffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
0005ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
0005fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
00060000 2a 00 00 00 00 c0 00 00 40 00 00 00 00 c0 00 00 |*.......@.......|
00060010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
00060020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
00060030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
00060040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
00060050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
00060060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip
0007ffc0 d0 ff d1 ff d2 ff d3 ff d4 ff d5 ff d6 ff d7 ff |................|
0007ffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
0007ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
0007fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
00080000 2a 00 00 00 01 00 00 00 40 00 00 00 01 00 00 00 |*.......@.......|
00080010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
00080020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
00080030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
00080040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
00080050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
00080060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip
0009ffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
0009ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
0009fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
000a0000 2a 00 00 00 01 40 00 00 40 00 00 00 01 40 00 00 |*....@..@....@..|
000a0010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
000a0020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
000a0030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
000a0040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
000a0050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
000a0060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip
000bffc0 d0 ff d1 ff d2 ff d3 ff d4 ff d5 ff d6 ff d7 ff |................|
000bffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
000bffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
000bfff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
000c0000 2a 00 00 00 01 80 00 00 40 00 00 00 01 80 00 00 |*.......@.......|
000c0010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
000c0020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
000c0030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
000c0040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
000c0050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
000c0060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip
000dffc0 d0 ff d1 ff d2 ff d3 ff d4 ff d5 ff d6 ff d7 ff |................|
000dffd0 d8 ff d9 ff da ff db ff dc ff dd ff de ff df ff |................|
000dffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
000dfff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
000e0000 2a 00 00 00 01 c0 00 00 02 00 00 00 01 c0 00 00 |*...............|
000e0010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
000e0020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
000e0030 08 00 09 00 0a 00 0b 00 0c 00 0d 00 0e 00 0f 00 |................|
000e0040 10 00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 |................|
000e0050 18 00 19 00 1a 00 1b 00 1c 00 1d 00 1e 00 1f 00 |................|
000e0060 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 | .!.".#.$.%.&.'.|
--- skip to the not so funny part
000e0fc0 d0 07 d1 07 d2 07 d3 07 d4 07 d5 07 d6 07 d7 07 |................|
000e0fd0 d8 07 d9 07 da 07 db 07 dc 07 dd 07 de 07 df 07 |................|
000e0fe0 e0 07 e1 07 e2 07 e3 07 e4 07 e5 07 e6 07 e7 07 |................|
000e0ff0 e8 07 e9 07 ea 07 eb 07 ec 07 ed 07 ee 07 ef 07 |................|
000e1000 f0 07 f1 07 f2 07 f3 07 f4 07 f5 07 f6 07 f7 07 |................|
000e1010 f8 07 f9 07 fa 07 fb 07 2a 00 00 00 01 c2 00 00 |........*.......|
000e1020 3e 00 00 00 01 c2 00 00 08 07 09 07 0a 07 0b 07 |>...............|
000e1030 08 07 09 07 0a 07 0b 07 00 08 01 08 02 08 03 08 |................|
000e1040 04 08 05 08 06 08 07 08 08 08 09 08 0a 08 0b 08 |................|
000e1050 0c 08 0d 08 0e 08 0f 08 10 08 11 08 12 08 13 08 |................|
000e1060 14 08 15 08 16 08 17 08 18 08 19 08 1a 08 1b 08 |................|
000e1070 1c 08 1d 08 1e 08 1f 08 20 08 21 08 22 08 23 08 |........ .!.".#.|
000e1080 24 08 25 08 26 08 27 08 28 08 29 08 2a 08 2b 08 |$.%.&.'.(.).*.+.|
--- skip
000fffa0 b4 ff b5 ff b6 ff b7 ff b8 ff b9 ff ba ff bb ff |................|
000fffb0 bc ff bd ff be ff bf ff c0 ff c1 ff c2 ff c3 ff |................|
000fffc0 c4 ff c5 ff c6 ff c7 ff c8 ff c9 ff ca ff cb ff |................|
000fffd0 cc ff cd ff ce ff cf ff d0 ff d1 ff d2 ff d3 ff |................|
000fffe0 d4 ff d5 ff d6 ff d7 ff d8 ff d9 ff da ff db ff |................|
000ffff0 dc ff dd ff de ff df ff e0 ff e1 ff e2 ff e3 ff |................|
00100000

Regards
Gerold

On Friday 07 March 2008 09:40:07 Tejun Heo wrote:
>Hello,
>
>Gerold Jury wrote:
>> Yes it happens with the DVD+RW (testet with dd now) and with DVD+R
>>
>> Thank you for the byte interpretation.
>> Now I have a hint where to start with the debugging.
>
>I've tried to reproduce the problem here but failed. Can you please try
>the test with the file generated with the attached program? "genseqfile
>524288 > testfile" will give you 1 meg testfile and it will give us
>better idea how the data is getting corrupted.
>
>Thanks.

2008-03-07 19:52:27

by Frans Pop

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Gerold Jury wrote:
> 0001ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
> 0001fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|

Looks broken here too.

> 00020010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
> 00020020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|

It also seems like part gets repeated after the break in both cases.

Cheers,
FJP

2008-03-07 20:34:17

by Frans Pop

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Frans Pop wrote:
> Gerold Jury wrote:
>> 0001ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff
>> |................|
>> 0001fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff
>> |................|
>> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00
>> |*....@..@....@..|
>
> Looks broken here too.

Please ignore. I probably wasn't looking right.

Sorry for the noise.

2008-11-17 03:05:27

by Tejun Heo

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

Frans Pop wrote:
> Gerold Jury wrote:
>> 0001ffe0 e0 ff e1 ff e2 ff e3 ff e4 ff e5 ff e6 ff e7 ff |................|
>> 0001fff0 e8 ff e9 ff ea ff eb ff ec ff ed ff ee ff ef ff |................|
>> 00020000 2a 00 00 00 00 40 00 00 40 00 00 00 00 40 00 00 |*....@..@....@..|
>
> Looks broken here too.
>
>> 00020010 08 ff 09 ff 0a ff 0b ff 08 ff 09 ff 0a ff 0b ff |................|
>> 00020020 00 00 01 00 02 00 03 00 04 00 05 00 06 00 07 00 |................|
>
> It also seems like part gets repeated after the break in both cases.

Can you guys please add yourselves to bz#10743?

http://bugzilla.kernel.org/show_bug.cgi?id=10743

Please test 2.6.28-rc5 as it contains sata_via changes (TF access needed
specific workaround) and see whether the problem is fixed and report on bz.

Thanks a lot. Let's get this thing solved.

--
tejun

2008-11-17 08:18:23

by Frans Pop

[permalink] [raw]

Subject: Re: extra bytes written to SATA DVD drive on kernel 2.6.23 till 2.6.24.2

On Monday 17 November 2008, Tejun Heo wrote:
> Can you guys please add yourselves to bz#10743?
>
> http://bugzilla.kernel.org/show_bug.cgi?id=10743
>
> Please test 2.6.28-rc5 as it contains sata_via changes (TF access
> needed specific workaround) and see whether the problem is fixed and
> report on bz.

I cannot really help here. I never saw the problem myself, but just
thought I saw some pattern in the breakage that might provide a clue.

Sorry,
FJP