[Pkg-opt-media-team] Bug#709971: dvd+rw-tools: growisofs more then 1 Bluray, since Debian 7 speed collapses

[Thomas Schmitt]

Hi,

(Somehow my subscription to bug 709971 did not forward
 your recent mail to me. I found it by Google.)


> my 5. Child was born on 20.6.

Congrats !


> Please give me advice for the next tests. Should I repeat the xorriso
> write and read tests on the same time?

The improved time measurement might a give clearer view on
the symptoms. Granularity is much finer and the timestamps
will tell whether libburn stalls at other occasions than
waiting for an SCSI transaction call ioctl(SG_IO) to end.

So repeat the tests which showed the problem.
Show me the resulting log files.

After those logs are generated and inspected, the problem probably
will leave my realm of driving optical drives. It looks like a
kernel i/o queue congestion.

You will have to look for kernel experts who are interested
in debugging this behavior. I will be ready to explain to
them what libburn or growisofs are doing.
(Cc me when you have found interested developers.)


Have a nice day :)

Thomas