Alan Altmark wrote:
On Tuesday, 10/24/2006 at 04:23 AST, "Petersen, Jim"
<[EMAIL PROTECTED]> wrote:
I said long ago, during a presentation I gave at SHARE in August 2003,
just after I had done an ESP test on Flashcopy Dataset, that IBM needs
to build something into ISMF or something else so you don't have to sit
there and do FCQUERY all day or run ICKDSF FLASHCPY jobs until the cows
come home. It appears they haven't listened in over 3 years.
And, yet, everyone keeps asking the z/VM folks to 'please add FCQUERY to
VM'. :-)
If folks want it changed, you gotta get those requirements opened.
Alan Altmark
z/VM Development
IBM Endicott
...
Need both:
(1) a way to query the current FC state of specific drives;
(2) a system event that can be seen by system automation or installation
exits upon completion of an individual flash copy.
A reasonable question to ask when doing 300 full-volume flashcopy
operations is "are they all done?". If there were an accounting record
(like SMF) and/or console message cut when the flashcopy completed that
could be tracked in real time, determining completion would be
relatively simple and cheap. With only FCQUERY support, you are reduced
to the expensive and cumbersome technique of repeatedly polling the
status of 300 devices to get the same information.
I'll have to check my records - I was thinking I put in a requirement
for such capability in z/OS, but maybe not. I'm suspecting this
involves more than changes to z/OS or z/VM. My impression is that the
DASD subsystem might have to be changed first - it's unclear whether
there is currently any protocol for reporting FC completion events to
the host.
--
Joel C. Ewing, Fort Smith, AR [EMAIL PROTECTED]
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