Avamar: Hyper-V plugin failing with error "Unable to resolve cluster node <> to an IP address"

Summary: Avamar: Hyper-V plugin failing with error "Unable to resolve cluster node <> to an IP address"

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Symptoms



The Hyper-V CSV Cluster backup is failing with the following error message:
 
avhypervvss Info <0000>: Error in getting the 'ParentPath' of the VHD file.
avhypervvss Error <18765>: Unable to resolve cluster node '' to an IP address.
avhypervvss Error <19366>: Unable to send sub-workorders to all remote clients
avhypervvss Error <41659>: Backup did not complete successfully

The avhypervvss.cmd file contain the following flags:
 
--proxy=true
--multi-proxy=node1-hostname, node2-hostname
--change-csv-ownership=true
--enable-incremental=false

Same issue can also be seen with the following flag:
--clusternode=node1-name(node-IP-address), node2-name(node-IP-address)

The single node backup works fine.

Cause

Environmental issue, the Hyper-V servers were not up to date.

Resolution

Install the latest MS updates on the Hyper-V servers:
  • Clean Avamar proxy set up using the "Avamar Cluster Config" tool.
  • Re-created the Avamar proxy from scratch using the same tool.

Affected Products

Avamar

Products

Avamar
Article Properties
Article Number: 000064537
Article Type: Solution
Last Modified: 05 Mar 2025
Version:  4
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