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Virtual machine swapfiles are not deleted and left unused after HA failover (2035995)

Symptoms

  • Following a vSphere High Availability (HA) restart of virtual machines on another ESXi/ESX host, virtual machine swapfiles that were local to the failed ESXi/ESX host are left behind and remain unused.
  • Virtual machine swapfiles are not deleted and are left unused after HA failover.
  • Virtual machine swapfiles are not automatically cleaned up after HA failover when virtual machines are restarted on another ESXi/ESX host.

Cause

When a virtual machine is powered up on another host by a HA event, it is not able to access the previous swapfile if that swapfile location was local to the failed host. In this case, it creates a new swapfile. If the virtual machine is migrated back to the original host, afterwards it will not reuse the original swapfile.

Resolution

This is a known issue, and is being reviewed by VMware.

To work around this issue:

After a HA host failure, manually delete virtual machine swapfiles from the local swapfile datastore which were left behind on the original (failed) ESXi/ESX host.

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