Subject: Re: Native z/VSE 3.1.1 Sharing Tape Drives Under EPIC
From: Billy R. Bingham (bbingham_casbah839@suddenlink.net)
Date: Wed Aug 13 2008 - 11:53:27 EDT
Sure screwed that up :) SB: Bob, I was doing what you intend to do, but I was using the NOASSGN command. I was not issuing the OFFLINE command either. It seems to me that I heard that the NOASSGN command was no longer needed, but I never tried it. BTW: I got the NOASSGN command usage from an early, early WAVV or late, late GUIDE. Used it to justify my attendance after that. Billy ---- "Billy R. Bingham" <bbingham_casbah839@suddenlink.net> wrote: > Bob, > > I was doing what you intend to do, but I was using the NOASSGN command. I was not issuing the OFFLINE command either. It seems to me that I heard that the NOASSGN command was no longer, but I never tried it. > > BTW: I got the NOASSGN command usage from an early, earcly WAVV or late, late GUIDE > ---- rbotsis@aol.com wrote: > > All, > > > > I was wondering if any of you are doing the above. I ask because > > several years ago, when running z/VSE 2.6.2, we tried this and had > > problems. Most of them were believed to be z/VSE problems (device > > assigned elsewhere, dev in use to mention two)and not EPIC problems as > > I intend to try this again this weekend. > > > > Our current IPL procedure is as follows (note that the following is an > > example of 2 LPAR's using a total of 4 3490E's (2 drives per LPAR) even > > though we have 9 LPAR's but should give you an idea of what's currently > > being done): > > > > LPAR 1: > > ADD 660:661,3490E,08 > > ADD 662:663,3490E,08,DVCDN > > > > During IPL of the above LPAR, inside $0JCL.PROC, 662-663 are also > > OFFLINE'd which causes an unfortunate side effect of rewinding and > > unloading the physical tapes on 662-663. > > > > LPAR 2: > > ADD 660:661,3490E,08,DVCDN > > ADD 662:663,3490E,08 > > > > During IPL of the above LPAR, inside $0JCL.PROC, 660-662 are also > > OFFLINE'd which causes an unfortunate side effect of rewinding and > > unloading the physical tapes on 660-661. > > > > I intend to do the foillowing: > > > > LPAR 1: > > ADD 660:661,3490E,08 > > ADD 662:663,3490E,08 > > > > LPAR 2: > > ADD 660:661,3490E,08 > > ADD 662:663,3490E,08 > > > > Remove the OFFLINE commands from BOTH LPAR's. > > > > The above is how we tried it several years ago and I have always been > > at a lost as to WHY we had problems (IBM says this should work fine, > > last a long time), but it did NOT work. > > > > I did that at my former employer and it did work fine BUT, and I think > > this is the cluse, I used the NOASSGN command, which is NOT documented. > > > > Anyone like to tell me if your doing the above (the 2nd example) and > > are NOT having problems? If you are doing it and NOT having problems > > are you using NOASSGN? > > > > > > NOTE: ALL devices are defined to ALL LPAR"s in our IOCP. >
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