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SubjectRe: reading DVD-ROM: Logical block address out of range
On Wed, Dec 15 1999, Harald Koenig wrote:
> using 2.2.13 kernel when trying to sequentially read a DVD-ROM
> using Pioneer U303S drive
>
> Vendor: PIONEER Model: DVD-ROM DVD-303 Rev: 1.10
> Type: CD-ROM ANSI SCSI revision: 02
> Detected scsi CD-ROM sr3 at scsi0, channel 0, id 4, lun 0
> ncr53c815-0-<4,*>: FAST-10 SCSI 10.0 MB/s (100 ns, offset 8)
> sr3: scsi3-mmc drive: 0x/0x cd/rw xa/form2 cdda tray
>
> I get the following errrors at EOF of the media:
>
> sr3: CD-ROM error: Info fld=0x4d8e0, Current sr0b:03: sense key
> Illegal Request
> Additional sense indicates Logical block address out of range
> command was: Read (10) 00 00 04 d8 e0 00 00 20 00
> ncr53c815-0-<4,0>: phase change 2-3 10@079bb245 resid=4.
> sr3: CD-ROM error: Info fld=0x4d8e0, Current sr0b:03: sense key
> Illegal Request

So this is the end of the media, right? Probably the capacity was
a bit off at init.

> Additional sense indicates Logical block address out of range
> command was: Read (6) 04 d8 e0 20 00
> CD-ROM I/O error: dev 0b:03, sector 1270656

And we fall back to READ_6 in this case, wrongly...

> another problem with this DVD drive:
> reading CDs I get up to 4.8 MB/sec which matches the specified 32x speed
> for CDs. but reading DVDROM I only get sustained 2.7 MB/sec (2x) all the
> time and not up to 8.1 MB/sec (6x). any idea why ?

Hard to say why. I have the ATAPI version of that drive, and it has
no problems going 6MB/s with DVD-ROM.

--
* Jens Axboe <axboe@image.dk>
* Linux CD-ROM Maintainer
* http://www.kernel.dk

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