[coLinux-devel] scsi disk problem near 1GB

[Henry N. <hen...@ar...>]

Hello Bill,

At 05.03.2009 00:55, wrote Doctor Bill:
> Looks like it is not timing errors.  With local file, the SCSI driver
> is consistently bombing at about 27%.  That is pretty close to the
> 1GiB boundary, so if there is any math performed on this position
> value, it could be integer overflow.
>
> Bill

you are right with problems near 1GB limit.

I have configured a 3.1GB iso image file and also have tested as cdrom 
directly. Both stops reading after 1073741312  (0x3FFFFE00) bytes.

Configured as
   scsi1=cdrom,C:\Fedora.iso
or
   scsi1=cdrom,\Device\Cdrom0

Inside coLinux:
   debian:~# dd if=/dev/sr0 | md5sum
   d2546596e7b2378388c14c0cff6a8fe1  -
   2097151+0 records in
   2097151+0 records out
   1073741312 bytes (1.1 GB) copied, 216.493 seconds, 5.0 MB/s

My idea was to check corrupted data between the iso-file and the 
sr0-device driver. But it fails before it was finish. This error will be 
find.

-- 
Henry N.