VERITAS Storage Foundation 4.1 Intelligent Storage Provisioning Administrator's Guide

Administering Application Volumes

This chapter describes how to perform maintenance tasks on volumes that you have created using

VERITAS Intelligent Storage Provisioning (ISP). This includes resizing and changing the

capabilities of volumes without taking them offline.

The operations in this chapter use the vxvoladm command. For full details, see the

vxvoladm(1M) manual page.

For details of how to display information about volumes, monitor and control tasks, and using the

vxresize command to resize a volume and an underlying file system, see the “Administering

Volumes” chapter of the VERITAS Volume Manager Administrator’s Guide.

Resizing Volumes Online

Increasing or decreasing the size of a volume is an operation that can be performed while a volume

is online. The following vxvoladm operations are available for resizing a volume:

◆ growto — Increase volume size to a specified length.

◆ growby — Increase volume size by a specified length.

◆ shrinkto — Reduce volume size to a specified length.

◆ shrinkby — Reduce volume size by a specified length.

You can specify the length argument in sectors, kilobytes, megabytes, gigabytes or as a percentage

by adding the unit of measure as a suffix (s, m, k, g, %) to the length value. If no unit is specified,

sectors are assumed.

Caution If you use vxvoladm to resize a volume, do not shrink it below the size of the file

system that is located on it. If you do not shrink the file system first, you risk

unrecoverable data loss. If you have a VxFS file system, shrink the file system first, and

then shrink the volume. Other file systems may require you to back up your data so that