[Info-vax] FREESPADRIFT

[Phillip Helbig undress to reply]

In article
<mailman.133.1465763820.14339.info-vax_info-vax.com at info-vax.com>, Kerry
Main <kerry.main at backtothefutureit.com> writes: 

> > > > > Is there any reason not to run ANA/DISK/REPAIR, say, once per
> > day?
> > 
> > > $ Help set volume /rebuild
> > 
> > I do this once per day.  I don't think they do the same things (though
> > there might be some overlap).
> > 
> 
> They don't do the same thing, but if all you are worried about is free 
> space values, then this should do it. From help file-
> 
> "Recovers caching limits for a volume that was dismounted
> improperly. If a disk volume was dismounted improperly (such
> as during a system failure), and was then remounted with the
> MOUNT/NOREBUILD command, you can use SET VOLUME/REBUILD to
> recover the caching that was in effect at the time of the
> dismount. The FORCE option forces the disk to be rebuilt
> unconditionally, thus updating the free block count in the disk
> volume's lock value block."
> 
> Analyze /disk obviously does a lot more.

Right.  In my case, the free-space drift doesn't come from having been
improperly dismounted, so probably SET VOLUME/REBUILD won't fix it
(again, I do this nightly anyway, just in case the has been some crash).