acd0: FAILURE - READ_BIG MEDIUM ERROR

[Fabian Keil]

On Friday 17 September 2004 08:25, Søren Schmidt wrote:
> Jun Kuriyama wrote:
> > When I tried to read DVD-R media (written on the same current box by
> > cdrecord-ProDVD), I got this message at mounting:
> > 
> > -----
> > acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x15 ascq=0x00 error=0
> > acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x15 ascq=0x00 error=0
> > cd9660: RockRidge Extension
> > -----
> > 
> > Is this harmless or not?  I can copy a file from this DVD-R without
> > problem.
> 
> Looks like you isofs is bad...
> 
> > And, this DVD-R has a large file (3GB), and ls(1) (maybe stat(2))
> > issues an error like this:
> 
> Uhm , you cannot have file > 1G on a comliant isofs...

Compliant to what?

Quote from <http://www.uwsg.iu.edu/hypermail/linux/kernel/0402.0/0708.html>:

> The kernel (2.6 and 2.4) has the following code in isofs_read_inode():
>
> /*
> * The ISO-9660 filesystem only stores 32 bits for file size.
> * mkisofs handles files up to 2GB-2 = 2147483646 = 0x7FFFFFFE bytes
> * in size. This is according to the large file summit paper from 1996.
> * WARNING: ISO-9660 filesystems > 1 GB and even > 2 GB are fully
> * legal. Do not prevent to use DVD's schilling at xxxxxxxxxxxx
> */ 

Regards
Fabian