Red Hat GFS 6.1 -, Administrator'S Manual

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Chapter 1. GFS Overview 7
GFS provides the following main functions:
•
Making a File System
•
Mounting a File System
•
Unmounting a File System
•
GFS Quota Management
•
Growing a File System
•
Adding Journals to a File System
•
Direct I/O
•
Data Journaling
•
Configuring
atime
Updates
•
Suspending Activity on a File System
•
Displaying Extended GFS Information and Statistics
•
Repairing a File System
•
Context-Dependent Path Names (CDPN)
1.4. GFS Software Subsystems
GFS consists of the following subsystems: GFS and GNBD.
Table 1-1 summarizes the GFS Software subsystems and their components.
Software
Subsystem
Components Description
GFS
gfs.ko
Kernel module that implements the
GFS file system and is loaded on GFS
cluster nodes.
gfs_fsck
Command that repairs an unmounted
GFS file system.
gfs_grow
Command that grows a mounted GFS
file system.