On Fri, 30 Aug 2013 21:22:02 -0400, Robert A. Rosenberg wrote: > >I know for multi-volume datasets UNIT=(TAPE,2) handled the mount of >volume3 while volume1 rewound and unloaded. I do not remember if you >could allocate 2 units and have concatenated input volumes alternate >between them. AVR might have helped since it say "Find the device >with the Tape Volume and allocate the DD to it" but I do not think it >would handle the case where you want to reuse a drive where the tape >has unloaded - It was for allocation at step start. > I know from experience that AVR is ineffective once the OS has issued the mount message to the console. If I've been tardy mounting a tape, I must read the console message; dismount the tape; and move it to the drive requested. (It may have been for scratch requests; again, there's no response to tell allocation, "The scratch tape you need is already mounted on drive nnn; use it!") PITA.
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