Comment # 5 on bug 1209162 from Knut Alejandro Anderssen Gonz���lez

(In reply to Stefan Hundhammer from comment #3)
> Knut, please have a look.
> 
> Ancor couldn't really do actual testing, he came to those conclusions from
> reading the source code.
> 
> I also read it, and I was a bit overwhelmed by the complexity of setting
> such a simple flag. Please also check out the small issues that I found;
> maybe they are important, maybe they are not.
> 
> If you test that DIAG and find that it works as expected, so much the
> better. But somebody who knows his way around s/390 DASDs should really give
> this a try.

We were testing it together as part of the support of DASD management devices
in the installer. Unfortunately we do not have a machine with diagnose access,
so will try to ask Nikolay and Ihno for testing it and help us.