Continuously Available Shares

SMB3 clients can request persistent file handles for a particular share by enabling the cont_avail property. Since there is an overhead involved in saving state of the share to the stable storage for persistent file handles, continuously available SMB shares are only recommended for enterprise applications that undergo a limited number of open and close operations. You must not share these SMB shares over NFS or on workloads such as the /home directory as these workloads have a high number of open and close operations. You can enable the cont_avail property on file systems only if the extended file attribute property, xattr is enabled.