Koushik Das created CLOUDSTACK-658:
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Summary: Scaling up CPU and RAM for running VMs
Key: CLOUDSTACK-658
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-658
Project: CloudStack
Issue Type: New Feature
Security Level: Public (Anyone can view this level - this is the default.)
Components: Management Server
Reporter: Koushik Das
Fix For: 4.1.0
Currently CS supports changing CPU and RAM for stopped VM. This is achieved by
changing compute offering of the VM (with new CPU and RAM values) and then
starting it. I am planning to extend the same for running VM as well. Initially
planning to do it for Vmware where CPU and RAM can be dynamically increased.
Support of other HVs can also be added if they support increasing CPU/RAM.
Assuming that in the updated compute offering only CPU and RAM has changed, the
deployment planner can either select the same host in which case the values are
dynamically scaled up OR a different one in which case the operation fails. In
future if there is support for live migration (provided HV supports it) then
another option in the latter case could be to migrate the VM first and then
scale it up.
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