Red Hat ENTERPRISE LINUX 4 - GLOBAL FILE SYTEM Manual page 34

Chapter 4. Managing GFS
The gfs_grow command must be run on a mounted file system, but only needs to be run on one
node in a cluster. All the other nodes sense that the expansion has occurred and automatically start
using the new space.
To verify that the changes were successful, use the gfs_grow command with the -T (test) and -v
(verbose) flags. Running the command with those flags displays the current state of the mounted GFS
file system.
Usage
gfs_grow MountPoint
MountPoint
Specifies the GFS file system to which the actions apply.
Comments
Before running the gfs_grow command:
• Back up important data on the file system.
• Display the volume that is used by the file system to be expanded by running a gfs_tool df
MountPoint command.
• Expand the underlying cluster volume with LVM. For information on administering LVM volumes, see
the LVM Administrator's Guide
After running the gfs_grow command, run a df command to check that the new space is now
available in the file system.
Examples
In this example, the file system on the /gfs1 directory is expanded.
gfs_grow /gfs1
In this example, the state of the mounted file system is checked.
gfs_grow -Tv /gfs1
Complete Usage
gfs_grow [Options] {MountPoint | Device} [MountPoint | Device]
MountPoint
Specifies the directory where the GFS file system is mounted.
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