Apparatus and method for sharing a virtual file system...

Details Apparatus and method for sharing a virtual file system... Apparatus and method for sharing a virtual file system...

2008-01-05

2010-11-23

Bragdon, Reginald G (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C711S164000, C711S163000, C711S152000, C711S130000, C711SE12013

Reexamination Certificate

active

07840764

ABSTRACT:
A logically-partitioned computer system provides support for multiple logical partitions to access a single file system, thereby allowing the logical partitions to share a file without the overhead of communicating over a VLAN. An area of shared memory is defined that multiple logical partitions may access. One or more file control blocks that control access to the files in the file system are then created in the shared memory. Existing mechanisms for locking a file system between processes may then be used across logical partitions to serialize access to the file system by all processes in all logical partitions that share the file system. In this manner the sharing of files in a file system is enabled by leveraging existing technology that is used within a single logical partition to extend across multiple logical partitions.

REFERENCES:
patent: 6314501 (2001-11-01), Gulick et al.
patent: 6721823 (2004-04-01), Araki et al.

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