Red Hat GLOBAL FILE SYSTEM 4.7, Manual

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Complete Options
Table 4.1, “Command Options:
gfs_mkfs
” describes the
gfs_mkfs
command options (flags and
parameters).
Flag Parameter Description
-b BlockSize
Sets the file-system block size to
BlockSize
.
Default block size is 4096 bytes.
-D
Enables debugging output.
-h
Help. Displays available options.
-J MegaBytes
Specifies the size of the journal in megabytes.
Default journal size is 128 megabytes. The
minimum size is 32 megabytes.
-j Number
Specifies the number of journals to be created by
the
gfs_mkfs
command. One journal is required for
each node that mounts the file system.
Note: More journals than are needed can be
specified at creation time to allow for future
expansion.
-p LockProtoName
Specifies the name of the locking protocol to use.
Recognized cluster-locking protocols include:
lock_dlm
— The standard locking module.
lock_gulm
— The locking module compatible with
earlier versions of GFS.
lock_nolock
— May be used when GFS is acting
as a local file system (one node only).
-O
Prevents the
gfs_mkfs
command from asking for
confirmation before writing the file system.
-q
Quiet. Do not display anything.
-r MegaBytes
Specifies the size of the resource groups in
megabytes. Default resource group size is 256
megabytes.
-s Blocks
Specifies the journal-segment size in file-system
blocks.
-t LockTableName
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 GFS file system is being created. 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
Complete Options
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