On Fri, 14 Mar 2008 16:38:44 +0100, Rob van der Heij <[EMAIL PROTECTED] software.com> wrote:
>On Fri, Mar 14, 2008 at 4:33 PM, Steve Mitchell ><[EMAIL PROTECTED]> wrote: > >> I've understood that to mean I'm making cyl 1 to end available for linux >> and using cyl 0 for vm. Is that not correct? > >You're correct. For normal use that is enough. >The idea behind leaving the last cylinder free is that you could in >theory copy cyl 0 plus the Linux mini disk onto another pack, starting >from cylinder 1. That would allow for the same trick to be played in a >2nd level system. >But I don't know whether many people test Linux in 2nd level VM >systems. You certainly would not do for performance, and you might >also miss out on some of the hardware facilities that Linux can >exploit. I tested Linux in a 2nd level VM as part of migrating from z/VM 5.2 to 5. 3. Any exploitation of new hardware features would be tested after a migration is complete. Brian Nielsen
