On Jan 2, 2008, at 10:36 PM, Michael Schwartzkopff wrote:
(...)
How does ptest know what I changed in my CIB? I checked that it does
NOT
compare it to the running CIB, and the IP address is not noted in
the
status section of the CIB. So how does ptest the job?
in the status section you'll find a whole lot of lrm_rsc_op
"objects" ^
these represent a cluster operation and includes a number of fields
that help us determine which order they were performed in and what
parameters where used.
in particular, there is a field called "op_digest" which we use to
detect changes to the resource's parameters
So this fields contain some hash of the configuration at the last
change. If
the hash changes ptest can find out what changed and do the nescessary
transitions. Am I right here?
mostly - it knows something changed, but not which specific field
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