Hi guys, I have a client with a peculiar problem. They have zVM 4 partitions, sharing the same LCU's, every partition sees every DASD, and each partition have its own range of disks, defined with Offline_at_IPL on SYSTEM CONFIG. They use this setup because some times they need to access in one partition a disk belonging to another.
When this need arises, they issue a VARY ON 2345 and get the disk online, use it, copy something, VARY OFF 2345. Works fine. The problem: some channels are getting offline sometimes. We know that people are always messing with the cables, and from time to time one fiber or another gets loose, they fix, and so on. And when the device comes back online, every single DASD on that CHPID comes online too, ignoring the Offline_at_IPL statement. As it should, because Offline_at_IPL is just for IPL. We are thinking on a "method and apparatus" for getting those DASDs offline when the CHPID gets back to life. I already have a REXX (I just deleted a lot of lines of CPSYNTAX and added a few more) that parses SYSTEM CONFIG and looks if a given DASD is in the Offline_at_IPL range, and can put a DASD offline. I just could not make the exec run by itself (or by MAINT, or another CMS machine) every time a channel status changes. I tried to setup PROP, and it looks fine, except it doesn't react at all. My PROP RTABLE is configured to run my exec, but when the channel gets back, it does nothing. If I send the message by hand from MAINT, the exec runs, and puts the device offline if it is on Offline_at_IP range. I guess I will have to read everything about PROP again (I could find few documentation and examples), in case I have missed something. I saw the NOTACCEPTed statement for DEVICES on SYSTEM CONFIG, but looks like it will take the device offline forever, and we will need to bring it online sometimes. Does anyone have any idea for us? Mauro http://mauro.limeiratem.com - registered Linux User: 294521 Scripture is both history, and a love letter from God. ---------------------------------------------------------------------- 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/
