Veritas-bu

[Veritas-bu] Making use of 6.5.2+ default priorities in the presence of pre-existing policy priority settings

2009-02-04 12:26:49
Subject: [Veritas-bu] Making use of 6.5.2+ default priorities in the presence of pre-existing policy priority settings
From: "Rosenkoetter, Gabriel" <Gabriel.Rosenkoetter AT radian DOT biz>
To: "veritas-bu AT mailman.eng.auburn DOT edu" <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Wed, 4 Feb 2009 12:03:48 -0500
In my environments, there are already some policy priority settings in place. 
For the most part, I would like to clear those and make use of default 
priorities... but I'm hazy on what "clear" means.

The bpplinfo man page says:

      -priority priority

                The priority of this policy in relation to other policies.
                Priority is greater than or equal to 0. This value
                determines the order in which policies are run. The higher
                the value, the earlier the policy is run. The default is 0,
                which is the lowest priority.

And the 6.5.2 documentation update says (on page 369):

  bpplinfo  Use the -priority option to specify a new priority for the backup
            job that overrides the default job priority.


Has anyone yet determined empirically whether a priority setting of 0 (which is 
the default if no priority is specified with bppolicynew) on the policy is a 
special case that means "use the default" rather than "override the default", 
even if the priority was previously set to a higher number?


The 6.5.2 documentation update also mysteriously refers to a "first" and 
"second" priority in the "Understanding the Job Priority setting" section (on 
page 358):

  The NetBackup Resource Broker (NBRB) maintains resource requests for jobs in
  a queue. NBRB evaluates the requests sequentially and sorts them based on the
  following criteria:
  * The request's first priority.
  * The request's second priority.
  * The birth time (when the Resource Broker receives the request).
  The first priority is weighted more heavily than the second priority, and the
  second priority is weighted more heavily than the birth time.


Has anyone sorted out what "first" and "second" mean here?


--
gabriel rosenkoetter
Radian Group Inc, Senior Systems Engineer
gabriel.rosenkoetter AT radian DOT biz, 215 231 1556



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