Description of DRM
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From Kris Buelens, IBM Belgium
The DRM package provides a simple interface to manage the CP directory
- Helps with finding free space for new minidisks (automatic or manual)
- Checks for overlaps before placing the directory online
- Can be used to see only users with certain options
- Helps to defragment CKD disks
(DIRMAINT and/or DFSMS is required then)
- The additional MVMDISKS tool can be used as a help to move/copy lots
of minidisks to other volumes. Moving to another dasdtype is
only supported for CMS formatted minidisks as we use DDR, DFSMS COPY
or FORMAT and COPYFILE.
- The DIRBAC EXEC can be used to create DDR statements to backup
only used cylinders (gaps and excluded users are skipped).
In general: a poor man's DIRMAINT alternative,
If you have DIRMAINT: enhances DIRMAINT a little bit:
- DIRME is an EXEC to directly XEDIT the directory entry of a user
or to send selected users into a Pipeline. It also allows
to XEDIT some selected DIRMAINT control files.
Examples:DIRME MAINT and you see MAINT's entry in XEDIT.
DIRME MAINT LOCK and you can change MAINT's entry.
DIRME EXTENT CONTROL and you can change that control
file.
- DIRMW is an EXEC to look at DIRMAINT's WORKUNIT files.
It allows to view them, issue RETRY and CANCEL commands as well as
removing olf failed WUCCFAIL files. All this without
having to remember the workunit ids.
Prerequesite:
DIRMAP MODULE, part of CMS Utilities feature, standard part of CMS
in z/VM, is used to map the
directory as well as to find free space.
Changes Version 3.00.1 :
8 Sep 1998 - Accept the LK prefix command also on LINK cards
15 Sep 1998 - Ignore blank lines in RACF commands file
29 Sep 1998 - Bug: do not rebuild the GAPfile for each GET command
Changes Version 3.01 :
4 Jul 2000 - Improve Freemap (disk defragmanentation)
- PF11 is now FILELIST of the mdisk pointed too.
- When moving an Mdisk with DIRM CMDISK, DRM will now allow moving
into a gap smaller than the original Mdisk. And, DRM will use the new
mdisk size when updating the freemap.
- DRM recognizes when you change a prepared DIRM CMDISK into a
DIRM DMDISK, and it will update the freemap accordingly.
Changes Version 3.02:
7 Jul 2000 - Improve Freemap (disk defragmanentation)
- When you write 'userid cuu' in FREEMAP's commandline, and press PF9
(or PF11) it will find the indicated mdisk in the freemap.
- Bug correction: when moving minidisks, the remaining gap space
in a FREEMAP line can become 0. When later another gap is found
on a line with a 0, the cursor got placed at a wrong gap, or at
not gap at all. Problem fixed.
Changes Version 4
30 Jan 2002 - Support for the DRMGUI PACKAGE
1 Feb 2002 - Better errormessage passing to DRMGUI in case of errors
Changes Version 4.1
10 Jan 2003 - Include the MVMDISKS and DIRBKP tools.
Changes Version 4.2
7 Feb 2004 - Include the DIRMW tool to make handling of DIRMAINT
WORKUNIT files a lot easier.
Add some new prefix commands: for example LU (becomes RAC LISTUSER),
RL (becames RAC RLIST VMMDISK ...),
TMD (for DIRM TMDISK), and PURGE (for DIRM PURGE).
Changes Version 4.3
8 Feb 2004 - Add CMP prefix command to easily compare the contents of
two minidisks (uses COMPMDSK, part of the
Compare package).
Changes Version 4.4 May/June 2005
- Fix the FI prefix command entered in MDISKMAP
- Start DIRM BATCH if many DIRMAINT commands entered in XEDIT Prefix
- Allow "CMDisk" prefix commands on LINK cards, it prepares a DIRM LINK
- Support a "nbr" on most DIRM cmds (e.g. "DMD 5" prepares a
DIRM DMDISK for the up to 5 MDISK cards.
- Addition of the MDSK EXEC. This makes a DEFINE MDISK easy if your
current VM system has access to other VM systems (e.g. a Guest test VM,
or VMs sharing DASD with your VM). You need to have a copy of the CP
directory of this other system. The MDSK EXEC extracts the wanted MDISK
card from it, ATTACHes the target volser to the SYSTEM if required,
issues the DEFINE MDISK, ACCESSes it R/O (by default) and can start
FILELIST. At the end, MDSK can DETACH the things again.
Changes Version 4.5 July 2005
The DIRME EXEC has been included in the package.
Changes Version 4.5.2 August 2006
We support the new layout provided by DIRMAP in z/VM 5.2.
The FRMT prefix command now supports a parameter to indicate
the wanted CMS blocksize.
Changes Version 4.5.3 February 2009
PF 10, 11, & 12 performed SAVE and not FILE as they are described.
When an unauthorised user issued DIRME uid LOCK, DIRME kept waiting
after that DIRMAINT replies "not authorised", causing a long
response time.
Changes Version 4.5.3a October 2009
PF 10 (file), resulted in a NOVALUE rexx error.
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