VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Chapter 8, Administering Volumes

Resizing a Volume

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# vxassist shrinkto volume length

For example, to shrink volcat to 1300 sectors, use the following command:

# vxassist shrinkto volcat 1300

Caution Do not shrink the volume below the current size of the ﬁle system or database

using the volume. The vxassist shrinkto command can be safely used on

empty volumes.

Shrinking by a Given Length

To shrink a volume by a speciﬁc length, use the following command:

# vxassist shrinkby volume length

For example, to shrink volcat by 300 sectors, use the following command:

# vxassist shrinkby volcat 300

Caution Do not shrink the volume below the current size of the ﬁle system or database

using the volume. The vxassist shrinkby command can be safely used on

empty volumes.

Resizing Volumes using vxvol

To change the length of a volume using the vxvol set command, use the following

command:

# vxvol set len=length volume

For example, to change the length to 100000 sectors, use the following command:

# vxvol set len=100000 vol01

Note The vxvol set len command cannot increase the size of a volume unless the

needed space is available in the plexes of the volume. When the size of a volume is

reduced using the vxvol set len command, the freed space is not released into

the disk group’s free space pool.

If a volume is active and its length is being reduced, the operation must be forced using

the -o force option to vxvol. This prevents accidental removal of space from

applications using the volume.

The length of logs can also be changed using the following command:

# vxvol set loglen=length log_volume