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gfs_mkfs -p lock_dlm -t alpha:mydata2 -j 8 /dev/vg01/lvol1

mkfs -t gfs -p lock_dlm -t alpha:mydata2 -j 8 /dev/vg01/lvol1

Complete Options

Table 3.1, “Command Options: gfs_mkfs” describes the gfs_mkfs command options.

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 locking protocols include:

lock_dlm — The standard locking module,

required for a clustered file system.

lock_nolock — 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.

Chapter 3. Managing GFS

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Red Hat GLOBAL FILE SYSTEM 5.2 Installationsanleitung Seite 22