As my father-in-law likes to say, when they make me king... 8-) For LPARs with no active operating system, the HMC should be able to simply vary resources logically on and off at will. For LPARs with an active operating system, the HMC should signal the operating system a request to logically vary resources on or off. The signal should include a time out value (e.g., number of seconds) and a time out action (e.g. abort/cancel, continue/force, prompt operator, etc.). The user should be able to select the time out value and time out action. However, the HMC does need to be king, and to have the option to forcibly vary resources on and off after warning the operator what may happen to his first born, etc. [i.e., override the operating system(s)]. Don
> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Elardus Engelbrecht > Sent: Wednesday, March 06, 2013 12:25 PM > To: [email protected] > Subject: Re: Vary off path > > Don Williams wrote: > > >IIRC, it is strongly advised to never use the HMC single object operations to > vary a CHP when the related LPARs have operating systems running in them. > > Agreed. One of our operators did something to a Production LPAR instead to > a Sandbox LPAR from HMC. > Lots of Ouch-ouch-ouch and IPL... > > >Alas, I wish that all operating systems were designed/required to gracefully > handle the HMC varying resources on and off line. > > Including boxed devices? > > I think z/OS should reply with this (but it is just me): > > REPLY 00,Reply with G, N, W, Y or N: > > 1. G - Go ahead, make my day. > 2. N - No, do not continue. > 3. W - Go ahead, but wait for me, I want to check out that resource XYZ. > 4. Y/N - Are your hardware + software fees and licenses fully paid up? ;-D > > Groete / Greetings > Elardus Engelbrecht > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
