Excuse me? If you re-IPL a virtual machine surely it resets its environment according to USER DIRECT? A virtual subset of the existing IOCDS, with the virtual addresses and user(sic)-defined storage?
What do you inherit from a previous instance of a virtual machine? Bit confused here, but I freely admit I'm a z/OS person. Isn't LINKing devices (190, 490, whatever) simply part of your VM profile? And isn't expanding storage limited by what is in USER DIRECT? If you set DEF STOR in CP/CMS and re-IPL your user machine, how does the next iteration remember it? Thanks for explaining any confusion here, Ant. -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of van Sleeuwen, Berry Sent: Friday, 5 November 2010 6:49 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: HCPGIR450W and HCPGIR453W after editing user direct Shane, An IPL doesn't clear the (virtual) hardware environment of the guest, and that's the way it should be. For instance, when I test a new CMS I can link the MAINT 490 instead of the 190. Or when I need a bit more storage to edit a large CMS file I can use DEF STOR to increase my default. I do not want to have that reset when I IPL the machine. Regards, Berry. -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Shane Sent: vrijdag 5 november 2010 5:58 To: LINUX-390@VM.MARIST.EDU Subject: Re: HCPGIR450W and HCPGIR453W after editing user direct We are talking about a hipervisor running (nominally) directly on the hardware - not a user-space application like VBox. In my naivety I would expect z/VM to be *very* aware of an interrupt for a guest IPL. If there are changes in the (z/VM) environment why wouldn't they resolved immediately at that point ?. It's all "smoke and mirrors" after all. Principle of least astonishment should prevail IMHO. Shane ... ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
