VxRail: Failed to Upload the Upgrade Bundle with Error "The upgrade engine is deployed. However it failed to start. Try again later."

Summary: When uploading an upgrade, it fails due to a missing or incorrect symlink.

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Symptoms

The upgrade page shows the error:

VxRail Update ran into a problem… Error extracting upgrade bundle XXX. The upgrade engine is deployed. However, it failed to start. Try again later.

From lcm-web.log:

2024-07-12T06:58:53.487Z <2728f46a279a34391f5bc2da757a782a> lcm [ERROR] <227> ScriptServiceImpl.java runLocalScript() (411): Running local script got exception: scriptName=/etc/vmware-marvin/scripts/lcm/scripts/verify_bundle_signature.py, shebangCommand=/etc/vmware-marvin/scripts/lcm/lcm_python, timeout=60000, envp= parameters=--bootstrap-check
2024-07-12T06:58:53.487Z <2728f46a279a34391f5bc2da757a782a> lcm [ERROR] <227> ScriptServiceImpl.java runLocalScript() (413): Running local script got exception.
java.io.IOException: Cannot run program "/etc/vmware-marvin/scripts/lcm/lcm_python": error=2, No such file or directory

Cannot find the lcm_python file under /etc/vmware-marvin/scripts/lcm/ on VxRail Manager: 

Screenshot of directory 

Cause

/etc/vmware-marvin/scripts/lcm/lcm_python symlink missing

Compare with other VxRail 7.0.521 cluster, should be like this:

Screenshot of functioning symlink 

Resolution

  1. Manually cancel upgrade.
  2. Edit /etc/vmware-marvin/scripts/lcm/scripts/verify_bundle_signature.py shebang from 
    #! /etc/vmware-marvin/scripts/lcm/lcm_python
    to 
    #! /usr/bin/python
Screenshot of before:
before change
 
Screenshot after the fix:
after change
  1. Retry upgrade.

Affected Products

VxRail Appliance Family, VxRail Appliance Series, VxRail Software
Article Properties
Article Number: 000227249
Article Type: Solution
Last Modified: 30 Apr 2026
Version:  6
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