virtual drive errors

[Andriy Gapon]

on 08/04/2010 13:24 Markus Wild said the following:
> Hello Andriy,
> 
>> Looking at cdcheckmedia and at the logged READ TOC (0x43) SCSI
>> command errors (as reported by Markus) I see the following problem.
>> Even if cdsize() call at the beginning of cdcheckmedia() succeeds, a
>> subsequent failure of cdreadtoc() throws us to 'bailout' label which
>> is past the code that sets d_mediasize.
>>
>> I think that the following patch should help with this situation (and
>> possibly other cases with READ TOC problems):
> 
> This fix indeed fixes the problem (there are still all the failure logs
> about the READ TOC/PMA/ATIP commands, but in the end, the mount
> succeeds now, whereas before it failed), thanks a lot! Now, perhaps a
> silly question: why would the READ TOC commands fail over the SCSI-USB
> bridge to start with? I'm normally (if I'm not trying to use the
> virtual USB cdrom) using ATAPI cdroms, and haven't seen any comparable
> TOC problems with those...

I am slightly confused.
Does the same happen wth physical SCSI-USB bridge?
Or it happens only with virtual/emulated CD drive?
If the latter, then I'd guess that this is just how the emulator works.

Thank you for testing!

-- 
Andriy Gapon