Re: "logical unit communication failure" c2scan NEC ND-4550A 1.07
Alexander Noé schrieb am 2006-02-12:
> Which transfer length does growisofs use? A sector is 2048 bytes, so
> if it uses 16 or 32 sectors per transfer, the transfer size would be a
> power of 2.
This isn't about growisofs but readcd -c2scan.
This is even mentioned in the subject.
> Wasn't there, some time ago, a problem with Linux and DMA transfers
> with sizes that were not a power of two? Could you patch growisofs in
> order to use like 17 or 23 sectors per transfer and see what happens?
The problem is limited to ide-scsi which isn't even loaded here.
readcd -c2scan works properly on the other drive on the cable,
so block size is not it.
Must be some difference in the replies or command interpretation or
transfer between NEC and Plextor.
> Did you try to extract an audio CD with cdda2wav on Linux?
Works with either drive and works in DMA mode.
No PIO (system time) load here.
--
Matthias Andree
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