[Pkg-opt-media-team] Bug#732717: growisofs - TRACKING SERVO FAILURE - Input/output error "

[Thomas Schmitt]

Hi,

(For some reason my subscription to this bug does not work.
 Better Cc: me.)

> I guess this backup tool
> creates iso's witch are not  compattible with DVD file system.
> (Universal Disk Format (UDF),  ISO/IEC 13346 and/or ECMA 

The error message originally stems from the drive's firmware.
It is specified in SCSI part MMC as key 4, asc 0x09, ascq 0x01,
but regrettably not much background info is given.
The error name suggests that the laser beam lost its way
while writing its spiral track.

This should not be related to the data content of the blocks
written. Regardless whether ISO 9660, UDF, ext3, tar or whatever
format is represented in those blocks.

UDF is prescribed only for Video DVD and Video Blu-ray, so that
the player devices know where to find the movies.
But it is perfectly ok to write ISO 9660 to DVD or Blu-ray.
I do this every day by my own program xorriso.
And after all, the name "growisofs" stems from a close
affinity of dvd+rw-tools to ISO 9660 resp. program mkisofs.


That said, if you really can reproduce that only this one
filesystem image fails, and that this happens with any DVD
you try, then your drive's firmware has a flaw.

I could not find out what filesystem format is written by
mondorescue. Well, if it has the suffix ".iso" ...
What do shell commands "file" and "isoinfo" tell about it ?

  file /media/DEBIAN-BACKUP-2/Mondo-ISO/mondorescue-1.iso
  isoinfo -d -i /media/DEBIAN-BACKUP-2/Mondo-ISO/mondorescue-1.iso


> (Universal Disk Format (UDF) [...] ECMA-167

Additionally to ECMA-167 one needs UDF-2.60 specs.
Both are available for free.

> For DVD-RW: ISO 9660

ISO 9660 specs are available for free as ECMA-119.


Have a nice day :)

Thomas