Devices you want to see intermittently are not in the "never" category
and, as you noted, require different treatment than "never". Brian Nielsen On Wed, 14 Jul 2010 09:41:22 -0700, Schuh, Richard <rsc...@visa.com> wrot e: >Sorry, but there are the intermittent times when we need to see some of them. When needed, that can be accomplished via command, without requirin g an update to the IOCP or LPAR Profile. The MVS security people want us to not even be able to vary them online except in special circumstances; thus, the Not_Accepted status. More proof that, "All generalities are wrong, including this one." > >Regards, >Richard Schuh > > > >> -----Original Message----- >> From: The IBM z/VM Operating System >> [mailto:ib...@listserv.uark.edu] On Behalf Of Brian Nielsen >> Sent: Wednesday, July 14, 2010 9:16 AM >> To: IBMVM@LISTSERV.UARK.EDU >> Subject: Re: Devices OFFLINE at IPL >> >> If you never want to see certain devices in the VM LPAR then >> the IOCP should be coded to not allow that LPAR to access the devices. >> >> Brian Nielsen >> >> On Wed, 14 Jul 2010 09:03:33 -0700, Schuh, Richard >> <rsc...@visa.com> wrot= >> e: >> >> >We have thousands of devices in the IOCP that we never want >> to see on >> >ou= >> r >> VM system; however, there are some we do need to access from >> VM intermixe= d with them. In this case, we find it better to >> add yet another category, = >> >> Not_Accepted, which prevents the devices from being sensed >> and the building of control blocks for them. This prevents >> bloat in the use of = >> >> storage and in any monitor displays or reports. If you went >> ahead and sensed the devices and took them offline after the >> IPL, the device blocks= >> >> would be built for them and they could affect the way space >> is allocated = >> >> and used in your monitor segment. >> > >> >As with all things that affect the configuration, you must take care >> >whe= >> n >> specifying that devices are to be kept offline or not even >> sensed. It is = >> >> certainly best to insure that you do not include devices >> which you need i= n the offline or Not_Accepted lists. As we >> like to say, "Your gun, your bullet, your foot." >> > >> >Regards, >> >Richard Schuh >> ======================== ========================= =======================
