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From harikrishna-patnala <...@git.apache.org>
Subject [GitHub] cloudstack pull request: Deploy VM failing frequently due to capac...
Date Mon, 07 Dec 2015 06:55:24 GMT
GitHub user harikrishna-patnala opened a pull request:

    https://github.com/apache/cloudstack/pull/1180

    Deploy VM failing frequently due to capacity calculation not synchron…

    
    
    There are some VM deployment failures happening when multiple VMs are deployed at a time,
failures mainly due to NetworkModel code that iterates over all the vlans in the pod. This
causes each deployVM thread to hold the global lock on Network longer and cause delays. This
delay in turn causes more threads to choose same host and fail since capacity is not available
on that host.
    
    Following are some changes required to be done to reduce delays during VM deployments
which in turn causes some vm deployment failures when multiple VMs are launched at a time.
    
      -  In Planner, remove the clusters that do not contain a host with matching service
offering tag. This will save some iterations over clusters that dont have matching tagged
host
      -  In NetworkModel, do not query the vlans for the pod within the loop. Also optimized
the logic to query the ip/ipv6
      -  In DeploymentPlanningManagerImpl, do not process the affinity group if the plan has
hostId provided.
    


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/harikrishna-patnala/cloudstack CLOUDSTACK-9112

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/cloudstack/pull/1180.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1180
    
----
commit 8394e1940535b05525bebebdb8fcc73fcaefc709
Author: Harikrishna Patnala <harikrishna.patnala@citrix.com>
Date:   2015-12-04T09:57:53Z

    Deploy VM failing frequently due to capacity calculation not synchronized
    
    Changes:
    - In Planner, remove the clusters that do not contain a host with matching service offering
tag. This will save some iterations over clusters that dont have matching tagged host
    - In NetworkModel, do not query the vlans for the pod within the loop. Also optimized
the logic to query the ip/ipv6
    - In DeploymentPlanningManagerImpl, do not process the affinity group if the plan has
hostId provided.

----


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