R1soft Error: “not enough data in sum file to read BlockSum”
Introduction
This error occurs in R1Soft when creating a backup through CDP (Continuous Data Protection). The issue usually happens after resizing the filesystem or disk volume on the server.
Prerequisites
- Access to R1Soft CDP Server
- Backup host already added in CDP
- Proper administrative permissions
Implementation
Error
CDP returns the following error while creating a backup of the server:
Not enough data in the sum file to read BlockSum.
Cause
This error generally indicates that the filesystem or volume has been resized.
Resolution
You will need to create a new Disk Safe.
Steps to Create a New Disk Safe
- Log in to the CDP Server
- Navigate to:
Hosts → [IP address of the added host]
- Click on Disk Safes from the menu
- Select New Disk Safe from the top-right corner of the page
- You will receive the prompt:
Continue starting new Disk Safe for 10.5.1.124?
- Click “Continue” and create the new Disk Safe
- Leave all settings as the default
- Initiate the backup again
This will fix the issue.
Conclusion
By creating a new Disk Safe in R1Soft, the backup process can be reinitialised successfully after filesystem or volume resizing changes.
