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
12
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