If you're running guests, you also need to vary the paths and CHPID's
offline on the guests, too. This definitely applies to z/VM and z/OS
guests, and possibly to other guest operating systems.
Dennis O'Brien
"An appeaser is one who feeds a crocodile -- hoping it will eat him
last.". -- Winston Churchill
-----Original Message-----
From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] On
Behalf Of Neubert, Kevin (DIS)
Sent: Tuesday, January 24, 2006 07:20
To: [email protected]
Subject: Re: Varying CHPID offline
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
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