Veeam has the ability to backup File Shares and in this case I had an NFS backup that randomly started failing. The only thing that had changed was a recent upgrade from Veeam 11 (specifically 11.0.1.1261) to Veeam 12 (specifically 12.3.1.1139). The upgrade went smoothly with no errors generated during the installation process. However about a month later, I received this error during the execution of a scheduled backup job:
Agent: Failed to process method {NasMaster.
The details of the error included:
Path: [Host: [xxx.xxx.xxx.xxx], Mount: [/path/to/backup], Disk: [Name/name/data/
The automatic retries failed in the same manner. At first I thought perhaps it was just a fluke, so I ignored it. However, on the next scheduled backup the same error occurred.
I was able to resolve the error after performing two steps.
- Upgrade Veeam to the latest version (specifically 12.3.2.3617)
- Manually run a health check on the backup files
Possibly only item 2 was needed, but this step was not done until after I had upgraded Veeam. To perform a health check:
- Open Veeam Backup and Replication
- Go to Jobs -> Backup
- Find the job that was failing
- Right click on it -> Run health check
When I ran the health check, some errors were found and repairs were made to the backup:
Succeeded Repairing backup completed successfully
After it was complete, the job was manually run and it completed without any errors.