Hi Anthony, I think the confusion is the word IPL. When we mention "IPL" we mean executing the command IPL *OR* logon a machine. But they are not always the same thing. If you logon a machine (and I mean logon a machine that is not running) you get the configuration as set in the directory. Usually you also have an IPL command in the directory. Either IPL CMS or IPL <device>. I would think of the USER DIRECT entry as a set of (CP) commands. So basically the logon of a machine executes a series of commands to setup your virtual envirnment. What you do after the logon of a machine is up to you. If you have the correct authorization you can change quite a bit in the virtual environment. But an IPL command is just one of the commands that is executed.
Yes, expanding storage has limits in the directory. For instance USER BERRY xxx 32M 128M. When I logon I get 32M storage. With DEFINE STOR I can reset that size to anything up to 128M. But when I execute the IPL CMS command I still get the size of the last DEF STOR command. It will not be reset to 32M. Any re-IPL will still have the size I had set the last time. Basically the same is true for devices in your virtual machine. I initially get what I have specified in the directory. But if I want to change that afterwards I can LINK, DETACH, DEFINE all kinds of devices. These changes remain in effect untill I either change it again or logoff/logon the virtual machine. Regards, Berry. -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Anthony Thompson Sent: vrijdag 5 november 2010 10:44 To: LINUX-390@VM.MARIST.EDU Subject: Re: HCPGIR450W and HCPGIR453W after editing user direct 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. ---------------------------------------------------------------------- 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/
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