Overview of IBM GPFS (General Parallel File System) Architecture and Components

GPFS (General Parallel FileSystem) is a distributed, shared, parallel cluster file system that supports simultaneous access to a single file system or a set of file systems from multiple nodes. GPFS runs on AIX, Linux and Windows operating systems and on IBM Power, Intel and AMD x86 architectures, and is widely used by HPC users worldwide. Each node in a GPFS cluster consists of three components: the management command set, the GPFS kernel extension, and multithreaded daemon processes.

GPFS management command set is a collection of scripts used to control GPFS operations and configuration. By default, GPFS commands can be executed on any node in the cluster, and the GPFS cluster automatically redirects the requested operation to an appropriate node for execution. It can be configured to synchronize across all GPFS nodes or only within a subnet.

GPFS kernel extension provides an interface to the operating system's vNode and VFS layers, registers GPFS as a native file system, and allows GPFS to handle standard I/O requests from the OS.

GPFS daemon processes handle all I/O operations and buffer management, including read‑ahead for sequential reads and write‑behind for asynchronous writes. I/O operations are protected by GPFS token management to ensure data consistency across all nodes. Daemons on different nodes cooperate to perform file system configuration changes, repairs, and parallel metadata updates.

The following section presents the GPFS architecture and a practice guide based on Oracle RAC technology (configuration, performance tuning, etc.). Although some content is dated, the core technical points remain relevant and are shared to benefit readers in learning and work.

Additional images omitted for brevity

Related Reading:

GPFS Dual‑Active Data Center Implementation Plan

GPFS Parallel File System Principle Analysis

Three Distributed File Systems You Should Know

For more architecture‑related technical summaries, refer to the "Architect’s Full‑Stack Technology Bookstore" e‑books (35 titles). You can read the original article to obtain the full collection of materials.

Promotional note: The full‑store package is priced at 188 CNY (originally 270 CNY) and includes free updates for all future content.

Scan the QR code to follow the public account and click “Read Original” to get the "Architect’s Full‑Store Materials Pack".