I'm new with Data Domain. I followed "Dell EMC BoostFS for Linux version 1.2" and successfully installed DDBoostFS-1.2.0.1-595646.rhel.x86_64.rpm in my RHEL 7.5 server. I can use "/opt/emc/boostfs/bin/boostfs set lockbox" to create a lockbox, then I can run "/opt/emc/boostfs/bin/boostfs mount" to mount my storage unit successfully. But when I try to use "mount -t boostfs myddr:/mystu /mnt", or add the line "myddr:/mystu /mnt boostfs defaults,_netdev 0 0" in my /etc/fstab file, as mentioned in the document, the system reports "unknow filesystem type 'boostfs'". I guess I missed some setting somewhere, but I cannot find any info in any document I found online. Please help. Thanks.