Not sure about the details of how STORE works, but there is condense
utility.
This is what I use. You can submit it multiple times and it will condense a
little more each time.

/
    1     !JOB VOLUTLJ,MANAGER.SYS;OUTCLASS=,1
    2     !COMMENT
************************************************************
    3     !COMMENT  THU, OCT  7, 1999. Condenses disc volumes
    4     !COMMENT
************************************************************
    5     !VOLUTIL
    6     VERIFY OFF
    7     CONTIGVOL 1
    8     CONTIGVOL 2
    9     EXIT
   10     !EOJ
/











----- Original Message -----
From: "Hans-Ole Kaae, ScanConsult" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, September 09, 2003 2:25 AM
Subject: [HP3000-L] Store - Purge - Restore with unexpected results


> Hi,
>
> We have quite some defragmentation on one of the 2 disks in the
> System Volume (not LDEV 1).
>
> Trying to avoid a reload, I did the following:
>
> 1) Located all files on this LDEV, generating a storelist.
> 2) Walked through the files and removed 'special files' from the
> storelist - I didn't want to risk anything by moving such files in and
out.
> 3) Stored the files to tape, with the ;PURGE option (Alone on the
> system, of course) using MPE's :STORE.
> 4) Restored the files from tape
>
> I did a :DISCFREE A before and after the operation - but while I
> expected MPE to 'fill in the gaps' yielding a less fragmented volume
> after the operation, this was certainly not the case.
>
> One explanation can be that MPE is so intelligent (Yes, I know and
> agree it is intelligent!) that it recognizes the file (assuming the
directory
> entry is just marked for deletion), checks and finds that the file is
still
> intact on disk and then compares the contents of the diskfile with the
> tapefile. Finding that the 'purged' file on disk is ok, MPE just clears
the
> 'purgeflag' in the directory.
>
> I don't know how MPE works deep inside - this is just a plain guess to
> explain the actual behaviour. I really would like to hear if others may
> have had similar experiences - or any good ideas/explanations.
>
> BTW: I asume that we have no Condense utilities available in MPE
> anymore? (Sorry, purchasing more utilities is not an option this time).
>
> Thanks in advance!
>
> /With kind regards Hans-Ole Kaae,
> ScanConsult.
>
> Mange hilsner / With kind regards
>
> Hans-Ole
>
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