From: Chris Doran [chrisj.doranNOchSPAM@physics.org.invalid]
Sent: Thursday, May 25, 2000 12:01 PM
To: Info-VAX@MVB.SAIC.COM
Subject: Re: disk usage keeps growing...

>deWaard@wt.tno.nl on 05/25/2000 10:33:34 AM
>...
>I have (at the moment) a little problem, something is currently
consuming
>disk-space and soon the disk will be full (big problem). I have
done some
>investigation, walked trough all the directories, cleaned up
some old files, but
>the cleaning up did just a little good, gain some free space.
The disk (RZ40) is
>also mounted on other systems (all alpha OpenVMS 7.2), but only
as a 'data disk'
>has a capacity of max 17.773.524 blocks, when I do a dir/total
it gives used
>2.947.263 blocks, so you'll think that there should be about
14.800.000 free
> ...

Did you put /SIZE=ALL on your DIR/TOTAL? There may be files with
unused blocks allocated. Without /SIZE=ALL, DIR only tells you
about the used ones. You can truncate files with huge amounts of
extra space using SET FILE/TRUNCATE. Note that according to how
your disk was initialised, the file system allocates a minimum
amount of space to each file, so if you have lots if 1-block
files, you actually have lots of 4-block (or bigger) allocations.

Probably not your problem, or you'd have mentioned it, but while
I'm on the subject: If this is a _system_ disk on one machine (I
know you said it's a 'data disk' on others) remember that VMS
has a number of log files which grow for ever unless you keep
purging and re-creating them. Here's list of these "weeds", and
ways of keeping them down:-

Weed: SYS$MANAGER:OPERATOR.LOG
Weedkiller:
	$ ASSIGN/USER OPA0: SYS$COMMAND ! (If not running on
OPA0:)
	$ REPLY/LOG
	$ PURGE SYS$MANAGER:OPERATOR.LOG

Weed: SYS$ERRORLOG:ERRLOG.SYS
Weedkiller:
	$ RENAME SYS$ERRORLOG:ERRLOG.SYS SYS$ERRORLOG:ERRLOG.OLD
	$ PURGE SYS$ERRORLOG:ERRLOG.OLD

Weed: SYS$MANAGER:ACCOUNTNG.DAT
Weedkiller:
	$ SET ACCOUNTING/NEW
	$ PURGE SYS$MANAGER:ACCOUNTNG.DAT

Weed: SYS$MANAGER:SECURITY.AUDIT$JOURNAL
Weedkiller:
	$ SET AUDIT/SERVER=NEW_LOG
	$ PURGE SYS$MANAGER:SECURITY.AUDIT$JOURNAL

Weed: SYS$SYSTEM:SYS$QUEUE_MANAGER.QMAN$JOURNAL
Weedkiller:
	$ MCR JBC$COMMAND
	JBC$COMMAND> DIAG 7
(ignore messages)
Note: This is actually a bug which crept into certain (VAX?) VMS
releases only and is probably fixed in V7.2.

The first command(s) in each set create new files. Issue the
purge commands a few days later (or after your next re-creation).

Chris

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