Available dasd is in the eye of the beholder. Here is how I look at the world.
If the dasd volume is in your LPAR's I/O configuration, it's "visible." If a visible volume has been assigned to your VM LPAR it is "available". If an available dasd volume has been formatted so as to remove any residual data and assigned a label, it is "eligible." If an eligible volume has been placed in the pool of dasd that you take from to satisfy system or virtual machine needs, it is "unallocated." When an unallocated volume is subsequently allocated for use by CP, it is a "CP-owned" volume. When an unallocated volume is allocated for use by one or more virtual machines, it is a "user" volume. A volume that is currently neither attached to SYSTEM nor a user is FREE according to QUERY DASD. You cannot reliably infer any of the above roles if it says FREE. For example a dedicated user volume will show FREE until the user who has it logs on. Likewise for DEVNO minidisks. And as Scott said, you may have visible dasd that are not available. So it takes a good process to reliably track the life of a volume. Regards, Alan Altmark IBM Lab Services ----------------- Sent from my BlackBerry Handheld. ----- Original Message ----- From: Cameron Seay [[email protected]] Sent: 06/21/2014 09:18 PM AST To: [email protected] Subject: Re: [LINUX-390] Which DASD is free Thanks Scott. What information is needed. There has to be a way to determine which volumes you can use. Thanks again. On Sat, Jun 21, 2014 at 9:05 PM, Scott Rohling <[email protected]> wrote: > Sorry - should have been 'DASD which is currently NOT in use by a user or > the system'.. > > Scott Rohling > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > -- Cameron Seay, Ph.D. Department of Computer Systems Technology School of Technology NC A & T State University Greensboro, NC 336 334 7717 x2251 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
