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

Reorganizing the Contents of Disk Groups

130 VERITAS Volume Manager Administrator’s Guide

Splitting Disk Groups

To remove a self-contained set of VxVM objects from an imported source disk group to a

new target disk group, use the following command:

# vxdg [-o expand] [-o override|verify] split sourcedg targetdg \

object ...

For a description of the -o expand, -o override, and -o verify options, see “Moving

Objects Between Disk Groups” on page 128.

See “Splitting Disk Groups” on page 265 for more information on splitting shared disk

groups in clusters.

For example, the following output from vxprint shows the contents of disk group

rootdg:

# vxprint

Disk group: rootdg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg rootdg rootdg - - - - - -

dm disk01 c0t1d0 - 17678493 - - - -

dm disk02 c1t97d0 - 17678493 - - - -

dm disk03 c1t112d0 - 17678493 - - - -

dm disk04 c1t114d0 - 17678493 - - - -

dm disk05 c1t96d0 - 17678493 - - - -

dm disk06 c1t98d0 - 17678493 - - - -

dm disk07 c1t99d0 - 17678493 - - - -

dm disk08 c1t100d0 - 17678493 - - - -

v vol1 fsgen ENABLED 2048 - ACTIVE - -

pl vol1-01 vol1 ENABLED 3591 - ACTIVE - -

sd disk01-01 vol1-01 ENABLED 3591 0 - - -

pl vol1-02 vol1 ENABLED 3591 - ACTIVE - -

sd disk05-01 vol1-02 ENABLED 3591 0 - - -

The following command removesdisks disk07 and disk08 fromrootdg to forma new

disk group, dg1:

# vxdg -o expand split rootdg dg1 disk07 disk08

The moved volumes are initially disabled following the split. Use the following

commands to recover and restart the volumes in the new target disk group:

# vxrecover -g targetdg -m [volume ...]

# vxvol -g targetdg startall