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

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Administering Volumes

Introduction

This chapter describes how to perform common maintenance tasks on volumes in

VERITAS Volume Manager (VxVM). This includes displaying volume information,

monitoring tasks, adding and removing logs, resizing volumes, removing mirrors,

removing volumes, backing up volumes using mirrors and snapshots, and changing the

layout of volumes without taking them ofﬂine.

Note Most VxVM commands require superuser or equivalent privileges.

Displaying Volume Information

You can use the vxprint command to display information about how a volume is

conﬁgured.

To display the volume, plex, and subdisk record information for all volumes in the

system, use the following command:

# vxprint -ht

The following is example output from the vxprint command:

Disk group: rootdg

DG NAME NCONFIG NLOG MINORS GROUP-ID

DM NAME DEVICE TYPE PRIVLEN PUBLEN STATE

V NAME USETYPE KSTATE STATE LENGTH READPOL PREFPLEX

PL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL/WID MODE

SD NAME PLEX DISK DISKOFFS LENGTH [COL/]OFF DEVICE MODE

dm disk11 c1t0d0 sliced 559 1044400 -

dm disk12 c1t1d0 sliced 559 1044400 -

v pubs fsgen ENABLED ACTIVE 2288 SELECT -

pl pubs-01 pubs ENABLED ACTIVE 2288 CONCAT - RW

sd disk11-01 pubs-01 disk11 0 2288 0 c1t0d0 ENA