On 9/2/09 6:59 PM, "Alan Altmark" <alan_altm...@us.ibm.com> wrote: > > Eye of the beholder? The point is to avoid an IPL/re-IPL disaster. If > you pick up the correct volumes at IPL and use DEVNO minidisks, then all > users, including the 2nd level system, will have the correct volumes > backing their minidisks. No worries.
OK, I can see that. I guess it's been so long since I installed a second level system on real cyl 0 that I don't ever encounter that any more. You've gotten so good at keeping CP up through fire and flood that having the system die before you can update SYSTEM CONFIG seems a remote possibility. Guess you guys need to introduce more CP failures... 8-) > Some fiddling with SYSTEM CONFIG to protect CP-owned volumes seems well > worth the time. Imagine two systems using the same paging volume. I > mean, it's not like one of the systems will refuse to use it.... Page out > one thing, page in something else. (shudder) And once you've done that, > protecting user volumes is a nit. Mmf. I would argue that that is actually a configuration management failure at the hardware level -- if it doesn't belong to that system, it ought not be visible in the LPAR IO config. But, defensive configuration programming never hurts, I guess.
