VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

Chapter 4, Administering Application Volumes

Resizing Volumes Online

Increasing the Size of a Volume by a Specified Amount

The following command grows a volume by a specified amount:

# vxvoladm [-g diskgroup] [-f] growby volume length [attributes...]

For example, the following command grows the volume vol1 by 1 gigabyte by allocating

contiguous storage:

# vxvoladm -g mydg growby vol1 1g layout=contig

The setting layout=contig allows only contiguous regions of disk to be used for plexes or

columns. By default, the length of a volume is increased by first extending existing subdisks in the

volume if possible, and then by adding and associating new subdisks. This default behavior

corresponds to the attribute setting layout=nocontig.

Reducing the Size of a Volume to a Specified Length

The following command reduces the length of a volume:

# vxvoladm [-g diskgroup] [-f] shrinkto volume length \

[attributes...]

For example, the following command shrinks the volume vol1 to 5 gigabytes:

# vxvoladm -g mydg shrinkto vol1 5g

This operation fails if the new length specified is larger that the current size of the volume.

Reducing the Size of a Volume by a Specified Amount

The following command reduces the length of a volume by a specified amount:

# vxvoladm [-g diskgroup] [-f] shrinkby volume length \

[attributes...]

For example, the following command shrinks the volume vol01 by 500 megabytes:

# vxvoladm -g mydg shrinkby vol1 500m