Inventory job will appear to have hung after reaching 100%.
If IMG media is present in the dedupe folder, from running GRT enabled backups, these media are also mounted during the inventory.
This issues is now resolved in Backup Exec 2010 R3 Hotfix 159965.
To confirm the OST media select has been inventoried, perform the following steps.
1. Open the Active Job.
2. Select the “Job History” Tab.
3. The list of OST media that have completed the inventory process will be listed under Job History.
4. After the media has been inventoried, the job can be canceled.