acd0: FAILURE - READ_BIG MEDIUM ERROR

[Julian Elischer]

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

I think this is a scheduler problem of some sort..

> -----
> 
> Is this harmless or not?  I can copy a file from this DVD-R without
> problem.
> 
> 
> And, this DVD-R has a large file (3GB), and ls(1) (maybe stat(2))
> issues an error like this:
> 
> -----
> % ls -l /cdrom/0
> ls: foo.tgz: Value too large to be stored in data type
> -----
> 
> With inserting printf() at kern/vfs_vnops.c:724, I got following
> result.  Is this related to above READ_BIG error?  Or simply something
> wrong in other VFS (or CD9660?) layer?
> 
> -----
> line:
> 	printf("kuri: EOVERFLOW: va_size=%llu, OFF_MAX=%llu\n", vap->va_size, OFF_MAX);
> output:
> 	kuri: EOVERFLOW: va_size=18446744072600323698, OFF_MAX=9223372036854775807
> -----
> 
>