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Creating a FusionSphere OpenStack OM VM Failed in FusionCloud 2.0.6

Publication Date:  2019-04-25 Views:  214 Downloads:  0

Issue Description

Creating a FusionSphere OpenStack OM VM failed in FusionCloud 2.0.6.

Handling Process

1.Find the ID of the FusionSphere OpenStack OM VM based on the task that fails to be created, and check the value of req-id for the VM.

2.Check nova-scheduler logs based on the req-id value and check whether the host can be selected. In the following example, the host cannot be selected, the system prompting that CPU resources are insufficient.

3.Check the numbers of vCPUs on the two hosts. Run nova hypervisor-show to check the host resource information. The information shows that only two vCPUs are available. Then, reset the CPU overcommitment ratio on the FusionSphere OpenStack web client. The FusionSphere OpenStack OM VM is provisioned successfully.

Root Cause

The number of vCPUs in the cluster is insufficient.


Add CPU resources or change the CPU overcommitment ratio from 1:1 and 1:3.


You are advised to check whether physical resources are insufficient before provisioning VMs.