Cross-protocol locking allows Novell Samba users or CIFS users to concurrently access files along with NCP users by allowing only one user at any time to open the file for write. Multiple users who are accessing via these protocols can open a file for read only.
WARNING:Allowing users who access files via different protocols to concurrently open a file for write can lead to data corruption.
NCP Server for Linux provides cross-protocol locking for NCP users, CIFS users, and Linux SMB/CIFS users. Novell CIFS supports cross-protocol locking to coordinate with NCP.
If cross-protocol locking is enabled for NCP Server for Linux but stops working for DST shadow volume pairs—that is, multiple users can open a file for read and write—it is probably because ShadowFS needs to be restarted. To resolve this problem, stop the shadowfs process, then start shadowfs. For information, see Section 13.11, Starting and Stopping ShadowFS Manually.