Red Hat GLOBAL FILE SYSTEM 5.2 Installationsanleitung PDF herunterladen (Seite 39)

Complete Usage

gfs_jadd [Options] {MountPoint | Device} [MountPoint | Device]

MountPoint

Specifies the directory where the GFS file system is mounted.

Device

Specifies the device node of the file system.

Table 3.4, “GFS-specific Options Available When Adding Journals” describes the GFS-specific

options that can be used when adding journals to a GFS file system.

Flag Parameter Description

-h Help. Displays short usage message.

-J MegaBytes Specifies the size of the new journals in megabytes.

Default journal size is 128 megabytes. The minimum

size is 32 megabytes. To add journals of different

sizes to the file system, the gfs_jadd command

must be run for each size journal. The size specified

is rounded down so that it is a multiple of the

journal-segment size that was specified when the file

system was created.

-j Number Specifies the number of new journals to be added by

the gfs_jadd command. The default value is 1.

-T Test. Do all calculations, but do not write any data to

the disk and do not add journals to the file system.

Enabling this flag helps discover what the gfs_jadd

command would have done if it were run without this

flag. Using the -v flag with the -T flag turns up the

verbosity level to display more information.

-q Quiet. Turns down the verbosity level.

-V Displays command version information.

-v Turns up the verbosity of messages.

Table 3.4. GFS-specific Options Available When Adding Journals

8. Direct I/O

Complete Usage

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Red Hat GLOBAL FILE SYSTEM 5.2 Installationsanleitung Seite 39