SPARC: How to Remove a Node From a Disk Device Group (VERITAS Volume Manager)

Use this procedure to remove a cluster node from the list of potential primaries of a VERITAS Volume Manager (VxVM) disk device group (disk group).

Steps

1. Verify that the node is still a member of the group and that the group is an VxVM device group.

   Device group type VxVM indicates a VxVM disk device group.

   phys-schost-1% scconf -pv | grep '(global-galileo)' (global-galileo) Device group type: VxVM (global-galileo) Device group failback enabled: no (global-galileo) Device group node list: phys-schost-1, phys-schost-2 (global-galileo) Diskset name: global-galileo phys-schost-1%

2. Become superuser on a current cluster member node.

3. Execute the scsetup(1M) command.

   # scsetup

   The Main Menu is displayed.

4. To reconfigure a disk device group, type 4 (Device groups and volumes).

5. To remove the node from the VxVM disk device group, type 5 (Remove a node from a VxVM device group).

   Follow the prompts to remove the cluster node from the disk device group. You will be asked for information about the following:

   • VxVM device group

   • Node name

6. Verify that the node has been removed from the VxVM disk device group(s).

   # scconf -p | grep Device

Example 4–10 SPARC: Removing a Node From a Disk Device Group (VxVM)

This example shows removal of the node named phys-schost-1 from the dg1 VxVM disk device group.

[Determine the VxVM disk device group for the node:]
# scconf -p | grep Device
  Device group name:                 dg1
    Device group type:               VxVM
    Device group failback enabled:   no
    Device group node list:          phys-schost-1, phys-schost-2
    Device group diskset name:    	dg1
[Become superuser and execute the scsetup utility:]
# scsetup
 Select Device groups and volumes>Remove a node from a VxVM device group.

Answer the questions when prompted. 
You will need the following information.
  You Will Need:            Example:
  VxVM device group name    dg1
  node names                phys-schost-1

[Verify that the scconf command executed properly:] 
scconf -r -D name=dg1,nodelist=phys-schost-1
 
    Command completed successfully.
Quit the scsetupDevice Groups Menu and Main Menu.
[Verify that the node was removed:]
# scconf -p | grep Device
  Device group name:                 dg1
    Device group type:               VxVM
    Device group failback enabled:   no
    Device group node list:          phys-schost-2
    Device group diskset name:    	dg1