Red Hat GFS 6.0 -, Administrator'S Manual

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30 Chapter 5. Using the Pool Volume Manager
Note
You can use GFS
init.d
scripts included with GFS to automate activating and deactivating pools.
For more information about GFS
init.d
scripts, refer to Chapter 12 Using GFS
init.d
Scripts .
5.7. Displaying Pool Configuration Information
Using the
pool_tool
command with the
-p
(print) option displays pool configuration information in
configuration file format. The pool information is displayed in the format equivalent to the configura-
tion file that was used to create the pool. The disk labels that were written when the pool was created
are read to recreate the configuration file.
5.7.1. Usage
pool_tool -p [ PoolName ]
PoolName
Specifies the pool name(s) for which to display information. If no pool names are specified, all
active pools are displayed.
5.7.2. Example
In this example, the
pool_tool -p
command displays the configuration for
pool0
:
#
pool_tool -p pool0
poolname pool0
#minor
<
dynamically assigned
>
subpools 1
subpool 0 0 1 gfs_data
pooldevice 0 0 /dev/sda1
5.8. Growing a Pool Volume
An existing pool can be expanded while it is activated or deactivated. You can grow a pool by creating
a new pool configuration file (based on an existing pool configuration file), then adding one or more
subpools containing the new devices to be added to the volume.
Refer to Section 5.7
Displaying Pool Configuration Information for information on creating a config-
uration file for an existing pool volume.
5.8.1. Usage
pool_tool -g [ ConfigFile ]