Looking at the binary log we see the backup start to do create a file level index of the VM then the backup fails with “Worker process has exited prematurely” . looking at the corresponding VMware trace file for the VM that the backup is indexing we see the VMware plugin process crash as seen in the trace log extract below.
Binary log extract:
Job Message 2015/07/07 08:47:01 62 Data Plugin CBKPPP01 TaskID Starting File Level Index
Error 2015/07/07 09:14:38 62 Data Plugin CBKPPP01 Worker process has exited prematurely
Error 2015/07/07 09:14:38 62 Data Plugin CBKPPP01 Will mark any backups handled by worker process as failed
0 VOLNTFS ??? 2748 75 0 91436225084 Offset 393216 is beyond end of attribute of size 40960
0 VOLNTFS ??? 2748 56 0 91436225084 Failed to read index block of sub-node 48
5 VOLUME ??? 2748 52 0 91436225084 Successfully enumerated children of 'Outlook Express' on '[DataStore12] filefu01_1/filefu01_1-000005.vmdk-Partition3'
Install VMware 10.0.5.8 hotfix.
This hotfix needs to be requested from support