[UI] Timeout listing Vmware Datacenter VMs for migration to KVM

[nvazquez]

ISSUE TYPE

• Bug Report

COMPONENT NAME

UI

CLOUDSTACK VERSION

4.19 and onwards

CONFIGURATION

Vmware datacenter, KVM cluster on CloudStack

OS / ENVIRONMENT

N/A

SUMMARY

On VMware vCenter datacenters with a big number of VMs the API listVmwareDcVms takes a while to complete. It was tested on VMware datacenters containing 500-600 VMs taking ~13 minutes to complete. When invoked from the UI, the Vmware VMs listing displays a 'Request failed' error at around 10 minutes even though the API continues running in the background:

STEPS TO REPRODUCE

- Go to Import-Export Instances
- Select Vmware as the source hypervisor and action: Migrate instances to KVM
- Choose KVM destination cluster
- Provide vCenter information
- List VMware Instances

EXPECTED RESULTS

The VMware vCenter VMs list

ACTUAL RESULTS

Request failed (API doesn't fail but the results are not displayed on the UI)