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arcserve-KB : The application was unable to identify the blocks that were used or changed on the virtual machine.

Last Update: 2016-11-23 15:49:07 UTC

Error Message:


The application was unable to identify the blocks that were used or changed on the virtual machine. This problem can occur when the ESX Server system restarts while the virtual machine is running. The next time a backup job runs, the application will reset changed block tracking and perform a verify backup operation.

Description:

Backup Jobs Fail Because the Blocks Cannot Be Identified.

For a particular virtual machine, all backup jobs fail and the following message appears in the Activity Log:


The application was unable to identify the blocks that were used or changed on the virtual machine. This problem can occur when the ESX Server system restarts while the virtual machine is running. The next time a backup job runs, the application will reset changed block tracking and perform a verify backup operation.

Solution:

To correct this behavior, perform a disk consolidation operation on the virtual machine. To perform disk consolidation, follow these steps.

  1. Open the VMware VI Client.
  2. Expand the ESX Server system for the affected virtual machine.
  3. Right-click the affected virtual machine, select Snapshot and then click Consolidate on the pop-up menu to consolidate the disks.
  4. Resubmit the backup.
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