The NFS network lock manager

The NFS network lock manager

This topic describes the NFS® mechanisms used for locking files against concurrent access by competing processes. The role of the Network Status Manager in handling lock states within the inherently stateless environment supplied by NFS is explained, as are the kernel-to-lock manager requests making up the NFS locking protocol.
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UnixWare 7 Release 7.1.1 - 5 November 1999