Commands Reference, Volume 4

rmlvcopy Command

Purpose

Removes copies from a logical volume.

Syntax

rmlvcopy LogicalVolume Copies [ PhysicalVolume ... ]

Description

The rmlvcopy command removes copies from each logical partition in the LogicalVolume. Copies are the physical partitions which, in addition to the original physical partition, make up a logical partition. You can have up to two copies in a logical volume. The Copies parameter determines the maximum number of physical partitions that remain. The LogicalVolume parameter can be a logical volume name or logical volume ID. The PhysicalVolume parameter can be the physical volume name or the physical volume ID. If the PhysicalVolume parameter is used, then only copies from that physical volume will be removed.

You can use the Volumes application in Web-based System Manager (wsm) to change volume characteristics.

You could also use the System Management Interface Tool (SMIT) smit rmlvcopy fast path to run this command.

Notes:

To use this command, you must either have root user authority or be a member of the system group.
If LVM has not recognized that a disk has failed it is possible that LVM will remove a different mirror. Therefore if you know that a disk has failed and LVM does not show those disks as missing you should specify the failed disks on the command line or you should use replacepv to replace the disk or reducevg to remove the disk.
The rmlvcopy command is not allowed on a snapshot volume group or a volume group that has a snapshot volume group.

Examples

To reduce the number of copies of each logical partition belonging to logical volume lv0112, enter:

rmlvcopy lv0112 2

Each logical partition in the logical volume now has at most two physical partitions.

Files

/etc/rmlvcopy	Contains the rmlvcopy command.
/tmp/*	Directory where the temporary files are stored while the command is running.

Related Information

The mklv command, mklvcopy command.

The Logical Volume Storage Overview in AIX 5L Version 5.2 System Management Concepts: Operating System and Devices explains the Logical Volume Manager, physical volumes, logical volumes, volume groups, organization, ensuring data integrity, and allocation characteristics.

For information on installing the Web-based System Manager, see Chapter 2: Installation and System Requirements in AIX 5L Version 5.2 Web-based System Manager Administration Guide.

The System Management Interface Tool in AIX 5L Version 5.2 System Management Concepts: Operating System and Devices explains the structure, main menus, and tasks that are done with SMIT.