Background deduplication operation makes no progress after some time where it did make progress initially. The slow phase of the background efficiency operation is saving_sharing, other phases like ga...Background deduplication operation makes no progress after some time where it did make progress initially. The slow phase of the background efficiency operation is saving_sharing, other phases like gathering or sorting work as expected. The last line in /etc/sis logfile associated with the volume the efficiency operation runs against is: Note: The /etc/sis log can be investigated by using the SPM interface, when pointing a web browser to URL https://<node-mgmt-ip>/spi/etc/log/.