Description of QDISK

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QDISK is an enhancment to and quadri-modal repackaging of XASTOR, QDISK, DLIST and QDEVS (available separately).
It was devised and constructed by Kris Buelens formely IBM Belgium. Contents include updated versions of DLIST, QDISK (part of the DLIST package), and QDEVS, as well a QACCESSD, a tool modelled on QDISK. See the QDISK PACKAGE file for more details.

Enhancement means that improvements were applied to the original version of QDISK and DLIST. Like recognizing that RACFVM is also using CMS.
Repackaged means that the same vesion of the execs can run on different level of the z/VM family, from VM/ESA, up to z/VM V7. The execs will load an apropriate version of XASTOR to make it work.

The REXX execs all display devices or accessed disks of other virtual machines, so are meant for VM system programmers. You must have the privilege class(es) required for the CP LOCATE command and Diagnose x'04'.

QDEVS
Displays devices a virtual machine currently has defined to it.
QDISK
Displays disks/SFS dirs ACCESSed by a CMS or GCS user. Like Q DISK thus.
QACCESSD
Displays disks/SFS dirs ACCESSed by a CMS or GCS user, like Q ACCESSED.
DLIST
Displays a fullscreen list of disks used by a CMS or GCS user.

These tools are invaluable when exploring a system with many SVM's that one is not too familiar with. You can easily see which MDISKs are LINKed, what is ACCESSed, and with DLIST looking on a disk ACCESSed by an SVM is simply PF11. Here the screen resulting from DLIST DIRMAINT

DLIST DIRMAINT 1/17 => DIRMAINT 011F = DIRMAINT 011F - VTERES 63 TO 70 (8) LABEL VDEV M STAT CYL TYPE BLKSZ FILES BLKS_USED (%) BLKS_LEFT BLK_TOTAL DIR155 155 A R/W 10 3390 4096 24 81-05 1719 1800 DRM492 191 C R/W 15 3390 4096 262 1401-52 1299 2700 DRM41F 11F D R/W 8 3390 4096 48 594-41 846 1440 DIR1DF 1DF E R/W 10 3390 4096 118 352-20 1448 1800 DIR 1D 1DB G R/W 10 3390 4096 12 400-22 1400 1800 DIR1AA 1AA H R/W 10 3390 4096 9 20-01 1780 1800 CMS23A 190 S R/O 100 3390 4096 690 14786-82 3214 18000 MNT19E 19E Y/S R/O 250 3390 4096 1239 31780-71 13220 45000 DIR1FA 1FA Z R/W 10 3390 4096 4 11-01 1789 1800 - 0123 - R/W 3339 3390 - - FULLPACK 0123 on VTERES - 019D - R/O 146 3390 - - MAINT 019D on VTE531 - 01DE - R/W 10 3390 - - DIRMAINT 01DE on VTERES - 02AA - R/W 10 3390 - - DIRMAINT 02AA on VTEBKP - 02DB - R/W 10 3390 - - DIRMAINT 02DB on VTEBKP - 02DF - R/W 10 3390 - - DIRMAINT 02DF on VTEBKP - 111F - R/W 5 3390 - - DIRMAINT 111F on VTERES - 1191 - R/W 10 3390 - - DIRMAINT 1191 on VTERES 1)Help 2)Ref 3)Quit 4)S/A 5)S/D 6)Top 7)Ba 8)Fo 9)Bot 10)Get 11)FileL 12)Det Note that I placed the cursor on the DRM41F disk and I pressed 'enter', as a result DLIST informs me that this disk is in fact DIRMAINT 011F.

The original author is Michael Tanzer. repackaging and enhancements by Kris Buelens.