[Info-vax] VMS defragmenters

[Bob Koehler]

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.