On Apr 1, 2005, at 1:11 PM, Stapleton, Mark wrote:

...I *have* seen instances where a source tape, which should be mounted
R/O, is instead mounted R/W. I haven't tracked the issue because, quite
frankly, it's not much of an issue; I am usually running down more
serious problems.

I wonder if it's a situation where the tape had been mounted for a
preceding R/W operation then, during the MOUNTRetention period, along
came the next request for it, as an input volume.

  Richard Sims