Open Stack

Hi, I'd like you to take a look at this patch for potential
documentation impact.
https://review.openstack.org/9540

Log:
commit 2043a558239449a86bd151b1bfa8094f9cdc02f8
Author: Brian Elliott <brian.elliott at rackspace.com>
Date:   Thu Jun 21 00:44:24 2012 +0000

    Adds generic retries for build failures.
    
    Add a generic scheduler retry for build failures.  Failed
    build requests get casted back to scheduler for retry until
    success or the maximum number of attempts is reached. The
    number of attempts to make is configurable or can be
    simply set to 1 to disable retries altogether.
    
    Partially implements blueprint: scheduler-resource-race
    
    DocImpact:
    
    Adds a new capability to filter scheduler to enable retries of
    scheduling requests.
    
    1) New flag: scheduler_max_attempts (int) - Number of attempts to make
    to schedule an instance before giving up and settting the instance to
    error.
    2) New RetryFilter.  Avoids re-scheduling to the same host multiple
    times. (nova.scheduler.filters.RetryFilter)
    
    Change-Id: I1127caeed4418c75372a42ca7fafacb4f061ffe3