PRIMECLUSTERGlobal Disk Services Configuration and AdministrationGuide 4.5

5.4.1 Class Configuration

The procedures for changing class configuration are explained below.

Changing Class Configuration

1. Displaying Class Configuration screen

   In the Main screen [Settings] menu, select [Class Configuration]. Class Configuration screen appears.

   Figure 5.100 Class Configuration

   

2. Selecting class to change

   Select the class you want to change from Class Configuration screen [Class Name].

3. Changing configuration

   Follow the procedures below to register a physical disk (create a disk), or to remove a disk.

   1. Registering a physical disk (Creating a disk)
      

      1. Select the physical disk you want to register as disk from [Physical Disk] field.
         

      2. Click <Add>.
         

      3. When changing the disk attributes from the initial values, change the disk type by selecting the appropriate disk from the [Class Configuration Disk] field.

      Figure 5.101 Physical Disk Registration

      

   2. Removing a disk
      

      1. Select the disk you want to remove from the [Class Configuration Disk] field.
         

      2. Click <Delete>.

4. Completing the change

   If you have no other changes to make, click <Exit>.

   
   

Changing the Class Attributes

Change the class attributes using the following procedures.

Note

Preconditions for Changing Class Attributes

• When the class has active volumes, the following class attributes cannot be changed.
  To change these class attributes, first stop all the volumes within the class on all the nodes within the class scope.
  

  • Class name
    

  • Type (from "shared" to "local")
    

  • Scope (node deletion)
    

• When the class has proxy objects, the class attributes cannot be changed.
  To change attributes of such a class, break the proxy objects within the class.

1. Deleting Gds resource

   When changing the class name of the class registered in the cluster application as Gds resource, delete the Gds resource. For the deletion procedure, refer to "PRIMECLUSTER Installation and Administration Guide."

2. Invoking the Class Attributes Definition screen

   Invoke the Class Attributes Definition screen using one of the following methods.

   1. Operation menu in the Main screen

      Click the target class's icon on the GDS configuration tree in the Main screen, and select [Operation]:[Change Attributes] to invoke the Class Attributes Definition screen.

   2. Change Attributes button in the Class Configuration screen

      Select the target class from the [Class Name] in the Class Configuration screen, and click the <Change Attributes> button to invoke the Class Attributes Definition screen.

   Figure 5.102 Class Attributes Definition Screen

   

3. Changing attributes
   

   1. For a single node

      You can only change the class name.
      

   2. For a cluster
      

      You can change the following attributes:

      • Class Name
        

      • Type
        

      • Scope
        

      See

      For information on assigning a class name, see "A.1.1 Object Name."

4. Implementing changes

   Click <OK> to implement the attributes change, or <Cancel> to cancel.

   Note

   Changes in Special File Path Name by Changing Class Name

   Changing the class name will also change the special file path name used to access the volume, so you must update the files in which the paths are described, such as /etc/vfstab.

5. Setting cluster resource management facility(CRM)

   When changing the class name of the class registered in the cluster application as Gds resource, execute the following command.

   # /opt/SMAW/SMAWRrms/bin/hvgdsetup -d Class_name_after_changing
     :
   Do you want to continue with these processes ? [yes/no] yes
   Do you need to start volumes in the specified disk class ? [yes/no] yes
   hvgdsetup completed.

6. Registering Gds resource

   When changing the class name of the class registered in the cluster application as Gds resource, register the class as Gds resource. For the registration procedure, refer to "PRIMECLUSTER Installation and Administration Guide."

   
   

Changing the Disk Attributes

When changing the disk attributes, there are two procedures to choose from:

• Using Main screen Operation menu.
  

• Using the Class Configuration Setting screen.
  

Note

Preconditions for Changing Disk Attributes

Changes cannot be made in the attributes of disks that are connected to groups and disks that have volumes.

Using Main screen Operation menu

1. Selecting disk to change

   Display the disk you want to change in the Main screen [Disk Information] field. Click the icon and select the disk you want to change.

2. Displaying Disk Attributes Definition screen

   In the Main screen [Operation] menu, select [Change Attributes]. Disk Attributes Definition screen appears.

   Figure 5.103 Disk Attribute Definition Screen

   

3. Changing attributes

   You can change the following attributes.
   

   • Disk Name
     

   • Disk Type

   See

   For details on assigning a disk name, see "A.1.1 Object Name."

4. Applying changes

   Click <OK> to apply changes in the attributes change, or <Cancel> to cancel.

   
   

Using the Class Configuration screen

1. Displaying the disk to change attributes

   Select the disk of which you want to change attributes in the [Class Configuration Disk] field.

2. Changing attributes

   You can change the following attributes in the [Class Configuration Disk] field.

   • Disk Name
     

     Double-click the disk name and edit.

   • Disk Type
     

     Scroll to the right to get the [Disk Type] column, and select the disk type from the list.

See

For details on assigning a disk name, see "A.1.1 Object Name."