PRIMECLUSTER Global File Services Configuration and Administration Guide 4.2 (Solaris(TM) Operating Environment)

12.2 Simultaneous Shared Access Maintaining Coherency

The GFS Shared File System implements simultaneous referencing and updating from multiple nodes to a file system on a shared disk device. The GFS Shared File System maintains consistency for updating from multiple nodes to files or file systems. The file lock function spanning nodes can be used with a conventional API.

In this way, applications at multiple nodes can perform exclusive updating of mutual file data and reading of the latest data. A conventional UNIX file system API, such as file lock, can do these operations.

[Figure Distributed execution of file related application]