Commands Reference, Volume 1

crvfs Command

Purpose

Creates entries in the /etc/vfs file.

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

Any of the entries in the VFSEntry parameter can be the NULL value, with the exception of the VFSName entry. If all the arguments are satisfactory, and the VFSName entry given on the command line does not 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 Overview for System Management in AIX 5L Version 5.1 System Management Concepts: Operating System and Devices explains file system types, management, structure, and maintenance.

The Mounting Overview in AIX 5L Version 5.1 System Management Concepts: Operating System and Devices explains mounting files and directories, mount points, and automatic mounts.