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.

1. Verify that the node is still a member of the group and that the group is an SDS/SVM 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 diskset name that is specified with metaset.

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

Example—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 the disk device group(s) for the node:]
# scstat -D
  -- Device Group Servers --
                       Device Group  Primary        Secondary
                       ------------  -------        ---------
  Device group servers: dg-schost-1  phys-schost-1  phys-schost-2
[Become superuser.]
[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
 Device Group Servers --
                       Device Group  Primary        Secondary
                       ------------  -------        ---------
Device group node list: dg-schost-1, phys-schost-2,