[Info-vax] VMS defragmenters

VAXman- at SendSpamHere.ORG VAXman- at SendSpamHere.ORG
Mon Apr 20 11:29:19 EDT 2009


In article <PBkKOGP1R2vr at eisner.encompasserve.org>, koehler at eisner.nospam.encompasserve.org (Bob Koehler) writes:
>In article <00A8A377.BE0D1090 at SendSpamHere.ORG>,   VAXman-  @SendSpamHere.ORG writes:
>> In article <DRXRwJvo3o04 at eisner.encompasserve.org>, koehler at eisner.nospam.encompasserve.org (Bob Koehler) writes:
>> 
>> That's it?  VMB.EXE (VAX) and APB.EXE (Alpha) should be as well.
>> 
>> Moving the SYSDUMP.DMP wouldn't be a problem unless your system crashes.
>> In this case, hope that you have a valid restorable backup of the system
>> disk. ;)
>
>   On my SIMH VAX running VMS 7.3 VMB.EXE is not marked NOMOVE.  I
>   didn't change it, have never changed it on any VAX, and have never
>   had a problem.
>   
>   Once upon a time the mcr opccrash in sys$system:shutdown.com always 
>   did a full dump (long before IO$_MOVE existed).  Nowdays I think the 
>   ERF buffers are still flushed to the dump file and picked up during 
>   boot.
>
>   But I have changed the NOMOVE on pagefiles many time, because I
>   hadn't yet put them into use and was trying to expand them on a
>   fragmented disk.  Often doing an IO$_MOVE between a few expansions
>   would allow me to grow it large enough.  Only once did I actually
>   have to defrag the system disk because I wanted a pagefile on it
>   expanded and there just weren't enough places I could consolidate 
>   some free space.

$ COPY VMB.EXE and then delete the original.  Happy rebooting.

-- 
VAXman- A Bored Certified VMS Kernel Mode Hacker    VAXman(at)TMESIS(dot)ORG

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