Red Hat GFS 6.1 -, Руководство администратора

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Chapter 5. Managing GFS 45
To verify that the changes were successful, use the
gfs_jadd
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.
5.6.1. Usage
gfs_jadd -j
Number MountPoint
Number
Specifies the number of new journals to be added.
MountPoint
Specifies the directory where the GFS file system is mounted.
5.6.2. Comments
Before running the
gfs_jadd
command:
•
Back up important data on the file system.
•
Run a
gfs_tool df
MountPoint
command to display the volume used by the file
system where journals will be added.
•
Expand the underlying cluster volume with LVM. (Refer to the LVM HOWTO at
http://www.tldp.org/HOWTO/LVM-HOWTO/index.html for command usage with
CLVM.)
After running the
gfs_jadd
command, run a
gfs_jadd
command with the
-T
and
-v
flags enabled to check that the new journals have been added to the file system.
5.6.3. Examples
In this example, one journal is added to the file system on the
/gfs1
directory.
gfs_jadd -j1 /gfs1
In this example, two journals are added to the file system on the
/gfs1
directory.
gfs_jadd -j2 /gfs1
In this example, the current state of the file system on the
/gfs1
directory is checked for
the new journals.