Messages in this thread | | | Date | Thu, 17 May 2001 13:39:53 -0500 (EST) | From | "Mark H. Wood" <> | Subject | Re: LANANA: To Pending Device Number Registrants |
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At the risk of offending hundreds, I'll mention that dynamic naming of disks and tapes has worked very well for many years in VMS. When you e.g. mount a disk volume labelled FOO, the system creates a system logical name DISK$FOO: for it automagically. Users don't care that it's really $4$DUA7: (which is *really* disk#5 on one HSCxx controller and disk#2 on another one). When you open DISK$FOO:[some.where]some.file , the kernel knows what you meant.
Substitute ephemeral device special files for the system logical names and you've got something like what's being discussed here.
Mind you, when that AI-thingy, I forget the name, suspects an impending failure and wants to send me mail about it, *it* needs some way to tell me which physical device needs replacing, so that I don't remove the wrong one. So physical locations have value, but only in special circumstances. Ordinary end-use and daily system administration shouldn't employ them.
-- Mark H. Wood, Lead System Programmer mwood@IUPUI.Edu Make a good day.
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