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Moving objects between disk groups

To move a self-contained set of VxVM objects from an imported source disk group to an imported target disk group, use the following command:

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

object ...

The -o expand option ensures that the objects that are actually moved include all other disks containing subdisks that are associated with the specified objects or with objects that they contain.

The default behavior of vxdg when moving licensed disks in an EMC array is to perform an EMC disk compatibility check for each disk involved in the move. If the compatibility checks succeed, the move takes place. vxdg then checks again to ensure that the configuration has not changed since it performed the compatibility check. If the configuration has changed, vxdg attempts to perform the entire move again.

The -o override option enables the move to take place without any EMC checking.

The -o verify option returns the access names of the disks that would be moved but does not perform the move.

  Note   The -o override and -o verify options require a valid EMC license.

For example, the following output from vxprint shows the contents of disk groups rootdg and mydg:

# vxprint

Disk group: rootdg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg rootdg rootdg - - - - - -

dm rootdg02 sdb - 17678493 - - - -

dm rootdg03 sdc - 17678493 - - - -

dm rootdg04 csdd - 17678493 - - - -

dm rootdg06 sdf - 17678493 - - - -

Disk group: mydg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg mydg mydg - - - - - -

dm mydg01 sda - 17678493 - - - -

dm mydg05 sde - 17678493 - - - -

dm mydg07 sdg - 17678493 - - - -

dm mydg08 sdh - 17678493 - - - -

v vol1 fsgen ENABLED 2048 - ACTIVE - -

pl vol1-01 vol1 ENABLED 3591 - ACTIVE - -

sd mydg01-01 vol1-01 ENABLED 3591 0 - - -

pl vol1-02 vol1 ENABLED 3591 - ACTIVE - -

sd mydg05-01 vol1-02 ENABLED 3591 0 - - -

The following command moves the self-contained set of objects implied by specifying disk mydg01 from disk group mydg to rootdg:

# vxdg -o expand move mydg rootdg mydg01

The moved volumes are initially disabled following the move. Use the following commands to recover and restart the volumes in the target disk group:

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

# vxvol -g targetdg startall

The output from vxprint after the move shows that not only mydg01 but also volume vol1 and mydg05 have moved to rootdg, leaving only mydg07 and mydg08 in disk group mydg:

# vxprint

Disk group: rootdg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg rootdg rootdg - - - - - -

dm mydg01 sda - 17678493 - - - -

dm rootdg02 sdb - 17678493 - - - -

dm rootdg03 sdc - 17678493 - - - -

dm rootdg04 sdd - 17678493 - - - -

dm mydg05 sde - 17678493 - - - -

dm rootdg06 sdf - 17678493 - - - -

v vol1 fsgen ENABLED 2048 - ACTIVE - -

pl vol1-01 vol1 ENABLED 3591 - ACTIVE - -

sd mydg01-01 vol1-01 ENABLED 3591 0 - - -

pl vol1-02 vol1 ENABLED 3591 - ACTIVE - -

sd mydg05-01 vol1-02 ENABLED 3591 0 - - -

Disk group: mydg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0 PUTIL0

dg mydg mydg - - - - - -

dm mydg07 sdg - 17678493 - - - -

dm mydg08 sdh - 17678493 - - - -

The following commands would also achieve the same result:

# vxdg move mydg rootdg mydg01 mydg05

# vxdg move mydg rootdg vol1

See "Moving objects between shared disk groups" on page 427.