Mounting A File System - Red Hat ENTERPRISE LINUX 5 - GLOBAL FILE SYSTEM 2 Manual

Chapter 3. Managing GFS2
Flag Parameter
-p LockProtoName
-q
-r MegaBytes
-t LockTableName
-u MegaBytes
-V
Table 3.1. Command Options: mkfs.gfs2

3.2. Mounting a File System

Before you can mount a GFS2 file system, the file system must exist (refer to
File System"), the volume where the file system exists must be activated, and the supporting clustering
and locking systems must be started (refer to Configuring and Managing a Red Hat Cluster). After
those requirements have been met, you can mount the GFS2 file system as you would any Linux file
system.
To manipulate file ACLs, you must mount the file system with the -o acl mount option. If a file
system is mounted without the -o acl mount option, users are allowed to view ACLs (with getfacl),
but are not allowed to set them (with setfacl).
12
Description
Specifies the name of the locking protocol to use.
Recognized locking protocols include:
lock_dlm — The standard locking module, required
for a clustered file system.
lock_nolock — Used when GFS2 is acting as a local
file system (one node only).
Quiet. Do not display anything.
Specifies the size of the resource groups in megabytes.
The minimum resource group size is 32 MB. The
maximum resource group size is 2048 MB. A large
resource group size may increase performance on very
large file systems. If this is not specified, mkfs.gfs2
chooses the resource group size based on the size of
the file system: average size file systems will have 256
MB resource groups, and bigger file systems will have
bigger RGs for better performance.
A unique identifier that specifies the lock table
field when you use the lock_dlm protocol; the
lock_nolock protocol does not use this parameter.
This parameter has two parts separated by a colon (no
spaces) as follows: ClusterName:FSName.
ClusterName is the name of the Red Hat cluster
for which the GFS2 file system is being created;
only members of this cluster are permitted to use
this file system. The cluster name is set in the /
etc/cluster/cluster.conf file via the Cluster
Configuration Tool and displayed at the Cluster
Status Tool in the Red Hat Cluster Suite cluster
management GUI.
FSName, the file system name, can be 1 to 16
characters in length, and the name must be unique
among all file systems in the cluster.
Specifies the initial size of each journal's unlinked tag
file.
Displays command version information.
Section 3.1, "Making a