On Oct 24, 2006, at 11:38 PM, Joel C. Ewing wrote:
------------------zsnip--------------------------------------
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.
--
--SNIP----------------------
Joel,
I would think a message would be sufficient after each volume is
done, no? Possibly a message when all are done as well. How IBM does
it is almost irrelevent as its their code, no? How IBM's code gets
notified again is an IBM issue and it would be up to them to inform
the "end user".
Ed
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