I'm not a big fan of using any command with FORCE as my first command. If the upgrade consists of the CHPIDs being upgraded one at a time I would start with VARY OFFLINE PATH nn ALL then VARY OFFLINE CHPID nn. After the upgrade vary the CHPID and PATH online then upgrade your next CHPID.
Depending on your I/O configuration via Q CHPID nn you might want to note what devices are online to each path prior to varying the path offline so you know what devices are supposed to be accessible when you vary the path back online. Regards, Kevin -----Original Message----- From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] On Behalf Of Randy Dray Sent: Tuesday, January 24, 2006 5:01 AM To: [email protected] Subject: Varying CHPID offline Last night we had IBM upgrade the code on our 800ESS Shark. The statement was this would not be a service impacting upgrade. all the CHPIDs upgrade fine for our open systems stuff but when we got to all my VM CHPIDs VM crashed. I am looking for a way to vary offline the CHPIDs that that we need to upgrade. CHPID 14, is host bay 1 CHPID 15, is host bay 2 CHPID 16, is host bay 3 CHPID 17, is host bay 4 IBM said that he thought the operating system zVM 4.4 should have been smart enough to switch over due to the multiple paths into the system. QUESTION: Can I issue a Vary OFFLINE CHPID nn Force, then will it automatically switch over to another chpid. When all the maintanance is done, Vary ONLINE CHPID NN to get it back. Thanks Randy Dray Systems Programmer Morton Buildings Inc. Morton IL (309) 263-6397 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
