|
View previous topic :: View next topic
|
| Author |
Message |
djeffbland
New User
Joined: 11 Jan 2018
Posts: 4
Location: USA
|
|
|
|
A previously used UCB Load module no longer works for me on higher z/OS releases. I'd like to find out how I can obtain the TOTAL tracks of a VOLUME via a REXX exec. As show below by the VTOC command, I need to obtain the 50085 value (total track size of volume).
| Code: |
Volume . : C98003
Command ===>
Unit . . : 3390
Volume Data VTOC Data Free Space Tracks Cyls
Tracks . : 50,085 Tracks . : 30 Size . . : 50,054 3,336
%Used . : 0 %Used . . : 1 Largest . : 50,040 3,336
Trks/Cyls: 15 Free DSCBS: 1,498 Free
Extents . : 2 |
|
|
| Back to top |
|
 |
sergeyken
Senior Member
Joined: 29 Apr 2008
Posts: 2141
Location: USA
|
|
|
|
The demonstration of absolute degradation of "IT experts"...   
Use PARSE statement in REXX to extract any value from any text string. |
|
| Back to top |
|
|
expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8796
Location: Welsh Wales
|
|
|
|
IEHLIST or DCOLLECT may have the info
Why you need it in REXX ?? |
|
| Back to top |
|
|
djeffbland
New User
Joined: 11 Jan 2018
Posts: 4
Location: USA
|
|
|
|
| expat wrote: |
IEHLIST or DCOLLECT may have the info
Why you need it in REXX ?? |
I should have mentioned that I have tried IEHLIST and DCOLLECT. IEHLIST does not give total tracks and DCOLLECT I have failed to get running related to RACF it seems.
I need it in REXX since I'm running an exec to build JCL. The exec needs to dynamically determine the size of a volume so I know what size to allocate a file system that will use the whole volume (actually a minidisk volume). |
|
| Back to top |
|
|
enrico-sorichetti
Superior Member
Joined: 14 Mar 2007
Posts: 10888
Location: italy
|
|
| Back to top |
|
|
steve-myers
Active Member
Joined: 30 Nov 2013
Posts: 917
Location: The Universe
|
|
|
|
| I hate to rain on your parade, but the number of tracks in a volume is not in the VTOC. It may be possible to derive this from VTOC data, but I need to research this more. I may know more in a few hours. |
|
| Back to top |
|
|
expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8796
Location: Welsh Wales
|
|
|
|
Huh, file system and minidisks
is this VM, Unix services or what
The volume geometry will tell you the number of tracks on a volume, but NOT the number available, but then you haven't mentioned that, but if you know the volume size surely you must also know the space available rather than the space possibly available.
A 3390-3 will have X number of tracks, a 3390-9 will have Y number of tracks etc. etc.
but as for mini disks and file systems ..................... |
|
| Back to top |
|
|
djeffbland
New User
Joined: 11 Jan 2018
Posts: 4
Location: USA
|
|
|
|
| expat wrote: |
Huh, file system and minidisks
is this VM, Unix services or what
The volume geometry will tell you the number of tracks on a volume, but NOT the number available, but then you haven't mentioned that, but if you know the volume size surely you must also know the space available rather than the space possibly available.
A 3390-3 will have X number of tracks, a 3390-9 will have Y number of tracks etc. etc.
but as for mini disks and file systems ..................... |
This is a z/OS image running on a VM system. I need to programmatically determine the total tracks of a given VOLSER. |
|
| Back to top |
|
|
Willy Jensen
Active Member
Joined: 01 Sep 2015
Posts: 734
Location: Denmark
|
|
|
|
| If you can issue a command and get the response, then the DS QD,VOL= should tell you. I use the ISPF REXX api for stuff like this. It will generate a lot of trafffic on the console if you do it for all devices, but you shouldnt need to do it very often. Another possible alternative is the old MXI freeware program. It is a bit dated, but the dasd display still works, at least for non-EVA volumes (not sure about EVA). And it has a very nice REXX interface. See cbttape.org. |
|
| Back to top |
|
|
djeffbland
New User
Joined: 11 Jan 2018
Posts: 4
Location: USA
|
|
|
|
| Willy Jensen wrote: |
| If you can issue a command and get the response, then the DS QD,VOL= should tell you. I use the ISPF REXX api for stuff like this. It will generate a lot of trafffic on the console if you do it for all devices, but you shouldnt need to do it very often. Another possible alternative is the old MXI freeware program. It is a bit dated, but the dasd display still works, at least for non-EVA volumes (not sure about EVA). And it has a very nice REXX interface. See cbttape.org. |
Yeah, tried it, but my ID does not have the console command authority. Will look into MXI. Thanks. |
|
| Back to top |
|
|
Pedro
Global Moderator
Joined: 01 Sep 2006
Posts: 2594
Location: Silicon Valley
|
|
|
|
| Quote: |
| A previously used UCB Load module no longer works |
I have not studied this for many years, but it used to be that the UCB contained the device type and model bits. And from that information you had to conclude the device geometry. |
|
| Back to top |
|
|
|
|
