Veeam Availability for Nutanix backup fails after upgrade to AOS 5.8.0.1 and higher

KB ID: 2742
Product: Veeam Availability for Nutanix AHV
Version: 1.0.342
Published:
Last Modified: 2018-09-12

Challenge

Veeam Availability for Nutanix backup job fails with:

Backup VM [ID: 4a89ffc5-68b3-4be0-b117-0591dcec184e' Name: 'MYVM’] failed. Error: Backup was unsuccessful. Preparing VM for backup failed, 1."

Prism Element dashboard shows the following failed tasks:
User-added image

The following conditions are met:

  1. Nutanix AOS is upgraded up to 5.8.0.1 within STS (Short Term Support) release branch;
  2. Affinity rules are configured for the affected machines:
​​ User-added image

Cause

This is a known Nutanix issue and is tracked by Nutanix as an internal bug ENG-163615 which was discovered after the release of Nutanix AOS 5.6.1.
 

Solution

Current workaround is to disable the host affinity rules for the affected VMs. The issue is under investigation by Nutanix support. LTS (Long Term Support) release branch is not affected by this issue at the moment

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