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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 ...

See "Moving objects between disk groups" on page 197.

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 rootdg01 c0t1d0 - 17678493 - - - -

dm rootdg02 c1t97d0 - 17678493 - - - -

dm rootdg03 c1t112d0 - 17678493 - - - -

dm rootdg04 c1t114d0 - 17678493 - - - -

dm rootdg05 c1t96d0 - 17678493 - - - -

dm rootdg06 c1t98d0 - 17678493 - - - -

dm rootdg07 c1t99d0 - 17678493 - - - -

dm rootdg08 c1t100d0 - 17678493 - - - -

v vol1 fsgen ENABLED 2048 - ACTIVE - -

pl vol1-01 vol1 ENABLED 3591 - ACTIVE - -

sd rootdg01-01 vol1-01 ENABLED 3591 0 - - -

pl vol1-02 vol1 ENABLED 3591 - ACTIVE - -

sd rootdg05-01 vol1-02 ENABLED 3591 0 - - -

The following command removes disks rootdg07 and rootdg08 from rootdg to form a new disk group, mydg:

# vxdg -o expand split rootdg mydg rootdg07 rootdg08

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

The output from vxprint after the split shows the new disk group, mydg:

# vxprint

Disk group: rootdg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg rootdg rootdg - - - - - -

dm rootdg01 c0t1d0 - 17678493 - - - -

dm rootdg02 c1t97d0 - 17678493 - - - -

dm rootdg03 c1t112d0 - 17678493 - - - -

dm rootdg04 c1t114d0 - 17678493 - - - -

dm rootdg05 c1t96d0 - 17678493 - - - -

dm rootdg06 c1t98d0 - 17678493 - - - -

v vol1 fsgen ENABLED 2048 - ACTIVE - -

pl vol1-01 vol1 ENABLED 3591 - ACTIVE - -

sd rootdg01-01 vol1-01 ENABLED 3591 0 - - -

pl vol1-02 vol1 ENABLED 3591 - ACTIVE - -

sd rootdg05-01 vol1-02 ENABLED 3591 0 - - -

Disk group: mydg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg mydg mydg - - - - - -

dm rootdg07 c1t99d0 - 17678493 - - - -

dm rootdg08 c1t100d0 - 17678493 - - - -

See "Splitting shared disk groups" on page 412.