HP CIFS File Locking Interoperation

Chapter 6 CIFS/9000 File Locking

Interoperability Examples

Because the primary benefit of CIFS/9000 is to provide Windows client access to files

residing on a UNIX operating system, shared client access examples all include at least one

Windows client. The following examples will explain how file locking behaves when more

than one client accesses a file via a CIFS/9000 share, both locally and NFS mounted.

6.1 WINDOWS ONLY CLIENT ACCESS – Local File

System

The diagram above shows 2 windows clients requesting concurrent file access on the

CIFS/9000 server to a local file system. The key issue for this configuration is that

CIFS/9000 provides full Windows file locking functionality in a Windows homogenous

environment.

Mandatory Share Mode (Open Mode) locking is fully implemented.

Byte Range locking is fully implemented.

Opportunistic (Oplocks) locking is fully implemented.

CIFS/9000

File

NFS

Windows

UNIX

PC-NFS

CIFS/9000

Clients