How to Remove a Node From a Disk Device Group (Solstice DiskSuite/Solaris Volume Manager)

Use this procedure to remove a cluster node from the list of potential primaries of a Solstice DiskSuite/Solaris Volume Manager disk device group. Repeat the metaset command for each disk device group from which you want to remove the node.

Steps

1. Verify that the node is still a member of the disk device group and that the disk device group is a Solstice DiskSuite/Solaris Volume Manager disk device group.

   Device group type SDS/SVM indicates a Solstice DiskSuite/Solaris Volume Manager disk device group.

   phys-schost-1% scconf -pv | grep '(global-galileo)' (global-galileo) Device group type: SDS/SVM (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. Determine which node is the current primary for the device group.

   # scstat -D

3. Become superuser on the node that currently owns the disk device group that you want to modify.

4. Delete the node's hostname from the disk device group.

   # metaset -s setname -d -h nodelist

   -s setname

   Specifies the disk device group name.

   -d

   Deletes from the disk device group the nodes identified with -h.

   -h nodelist

   Removes the node from the list of nodes that can master the disk device group.

   ---

   Note –

   The update can take several minutes to complete.

   ---

   If the command fails, add the -f (Force) option to the command.

   # metaset -s setname -d -f -h nodelist

5. Repeat Step 4 for each disk device group from which the node is being removed as a potential primary.

6. Verify that the node has been removed from the disk device group.

   The disk device group name matches the disk set name that is specified with metaset.

   phys-schost-1% scconf -pv | grep devicegroup Device group node list: phys-schost-1, phys-schost-2

Example 4–3 Removing a Node From a Disk Device Group (Solstice DiskSuite/Solaris Volume Manager)

The following example shows the removal of the host name phys-schost-2 from a disk device group configuration. This example eliminates phys-schost-2 as a potential primary for the designated disk device group. Verify removal of the node by running the scstat -D command. Check that the removed node is no longer displayed in the screen text.

[Determine the Solstice DiskSuite/Solaris Volume Manager
 disk device group(2) for the node:]
# scconf -pv | grep Device
  Device group name:                 dg-schost-1
    Device group type:               SDS/SVM
    Device group failback enabled:   no
    Device group node list:          phys-schost-1, phys-schost-2
    Device group ordered node list:  yes
    Device group diskset name:    	 dg-schost-1
[Determine which node is the current primary for the disk device group:]
# scstat -D
  -- Device Group Servers --
                       Device Group  Primary        Secondary
                       ------------  -------        ---------
  Device group servers: dg-schost-1  phys-schost-1  phys-schost-2
[Become superuser on the node that currently owns the disk device group.]
[Remove the hostname from the disk device group:]
# metaset -s dg-schost-1 -d -h phys-schost-2
[Verify removal of the node:]
phys-schost-1% scconf -pv | grep dg-schost-1
  -- Device Group Servers --
                       Device Group  Primary        Secondary
                       ------------  -------        ---------
  Device group servers: dg-schost-1  phys-schost-1