movevdisk

Use the movevdisk command to move the preferred node of a volume either within the same caching I/O group or to another caching I/O group.

Syntax

movevdisk [ -iogrp { iogrp_id | iogrp_name } ] [ -force ] [ -node { node_id | node_name } ] { vdisk_id | vdisk_name }

Parameters

-iogrpiogrp_id | iogrp_name

(Optional) Specifies the I/O group to move the volume to.

-force

(Optional) Use the force parameter to force the volume to be removed from an I/O group. This option overrides the cache flush mechanism.

Remember:

If the you specify the -force parameter the contents of the cache are discarded and the volume might be corrupted by the loss of the cached data. Use the -force parameter with caution.
If the force parameter is used to move a volume that has out-of-sync copies, a full resynchronization is required.

-nodenode_id | node_name

(Optional) Specifies the node ID or name assigned as the preferred node.

vdisk_id | vdisk_name

(Required) Specifies the volume to move.

Description

Use the movevdisk to migrate a single volume to a new I/O group - repeat this action for other volumes as required. This command can also move the preferred node of a volume without changing the caching I/O group, but it does not change which I/O groups can access the volume (only the caching I/O group is changed).

Important: You cannot migrate or move an image mode volume.

A compressed volume can also be moved, and you can specify the preferred node in the new I/O group. You can move a volume that is in a Flash Copy (FC) mapping, but the FC bitmaps remain in the original I/O group. You cannot move the volumes when the FC mapping is in preparing or prepared state. Additionally, a volume can be moved if it is the target of a FC mapping that is in stopping state.

You cannot move a volume to change the caching I/O group for a volume that is in a Global Mirror, Metro Mirror, or HyperSwap^® relationship, regardless of whether it is a primary, secondary, or change volume. To move a volume in a Global Mirror, Metro Mirror, or HyperSwap relationship, the relationship must first be deleted. You can change a preferred node without changing caching I/O group for this type of a volume.

If the volume is offline, use one of the recovervdisk commands to recover the volume and bring it back online. To specify a preferred node for the volume, use the -node node_id | node_name parameter with the movevdisk command. Use the movevdisk command to change the I/O group with which this volume is associated.

Important: Do not move:

A volume to an offline I/O group under any circumstance;
Remember: To avoid data loss, make sure that the I/O group is online before moving the volume.
An offline volume to the recovery I/O group

You can migrate a volume to a new I/O group to manually balance the workload across the nodes in the clustered system. You might end up with a pair of nodes that are overworked and another pair that are underworked.

Remember: You cannot move a volume if that volume is being formatted.

If the volume is a target of a FlashCopy mapping with a source volume in an active-active relationship then the new I/O group must be in the same site as the source volume. The system only permits moving a volume in a remote copy relationship if the move does not change the I/O group (it changes the preferred node). If the volume is in an active-active relationship the new I/O group must be in the same site as the source I/O group.

Note: Remote copy includes Metro Mirror, Global Mirror, and HyperSwap.

An invocation example to move `DB_Volume` to I/O group `2`

movevdisk -iogrp 2 DB_Volume

The resulting output:

No feedback

An invocation example to move `DB_Volume` to I/O group `IOGRP3` with a new preferred node id `7`

movevdisk -iogrp IOGRP3 -node 7 DB_Volume

The resulting output:

No feedback

An invocation example to change preferred node of volume DB_Volume with a new preferred node id as 8 in the same IOGRP

movevdisk -node 8 DB_Volume

The resulting output:

No feedback

movevdisk

Syntax

Parameters

Description

An invocation example to move DB_Volume to I/O group 2

An invocation example to move DB_Volume to I/O group IOGRP3 with a new preferred node id 7

An invocation example to change preferred node of volume DB_Volume with a new preferred node id as 8 in the same IOGRP

An invocation example to move `DB_Volume` to I/O group `2`

An invocation example to move `DB_Volume` to I/O group `IOGRP3` with a new preferred node id `7`