Commands Reference, Volume 1

crvfs Command

Purpose

Creates entries in the /etc/vfs file.

Syntax

crvfs VFSEntry

Description

The crvfs command adds /etc/vfs file entries by specifying fields within the VFSEntry parameter. The VFSEntry parameter is composed of the following fields: VFSName:VFSNumber:MountHelper:FileSystemHelper.

All fields in the VFSEntry parameter are required, but the reserved word "none" can be specified for the MountHelper and FileSystemHelper fields if there is no corresponding helper. If all the arguments are satisfactory, and neither the VFSName nor the VFSNumber given on the command line already exist, a new entry is created in the /etc/vfs file.

Parameters

VFSEntry

Specifies a string in the following format: VFSName:VFSNumber:MountHelper:FileSystemHelper

VFSName: Specifies the name of a virtual file system type.

VFSNumber: Specifies the virtual file system type's internal number as known by the kernel.

MountHelper: Specifies the name of the backend used to mount a file system of this type.

FileSystemHelper: Specifies the name of the backend used by certain file system specific commands to perform operations on a file system of this type.

Examples

To create a new vfs entry called newvfs, enter:

crvfs "newvfs:4:none:/etc/helpers/newvfshelper"

This creates the newvfs entry.

Files

/etc/vfs

Contains descriptions of virtual file system types.

Related Information

The chvfs command, lsvfs command, mount command, rmvfs command.

The File Systems in AIX 5L Version 5.2 System Management Concepts: Operating System and Devices explains file system types, management, structure, and maintenance.

The Mounting Overview in AIX 5L Version 5.2 System Management Concepts: Operating System and Devices explains mounting files and directories, mount points, and automatic mounts.