[GitHub] [cloudstack] div8cn opened a new issue #6100: KVM automatically adds ballooning

[GitBox <gi...@apache.org>]

div8cn opened a new issue #6100:
URL: https://github.com/apache/cloudstack/issues/6100


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   ##### ISSUE TYPE
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    * Improvement Request
   
   
   
   ##### SUMMARY
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   By default ,we cannot get the memory usage of vm through libvirt;
   
   Through analysis, it is found that the reason is that we did not add memballoon correctly in kvm;
   
   When the mem.overprovisioning.factor of the cluster <= 1.0, kvm will generate the following memballoon
   <memballoon model='none'/>
   When the mem.overprovisioning.factor  of the cluster is > 1.0, kvm will generate the following memballoon
   <memballoon model='virtio'/>
   
   So when memballoon.model=none, we can't get the memory usage of the vm through dommemstat (assuming they all have qga installed correctly)
   
   I wonder if we can set memballoon to virtio under any circumstances, and configure period=10 to let it automatically count the latest memory consumption.
   
   
   In this way, we can use third-party tools to monitor the resource usage of the vm, making up for the regret that cloudstack cannot view the historical consumption of vm resources!
   


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