PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.1 (Linux)

5.2.1.1 Class Configuration

In this section, how to create a new class is explained.

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

 

[Figure: Class Configuration]

 

1. Selecting class name

   In the "Class Name" list, select "New".
   
   

2. Selecting physical disk

   In the <Physical Disk List>, select the physical disk you want to include in the disk class.

   You can select more than one physical disk at a time.

   Selecting a physical disk will make the <Add> button available.

   [Figure: Selecting Physical Disk to Configure Class]

   

   
   
   

3. Creating a class

   Press <Add>, and the message below appears.

   [Figure: Warning]

   

   Press <Yes> to continue, and <No> to cancel.

   Press <Yes>, and Class Attributes Definition screen appears.

   [Figure: Class Attributes Definition]

   

   In the "Class Name" of Class Attributes Definition screen, an automatically created disk class name appears as default. Change the "Class Name" if necessary, and press <OK>.

   The "Type" is "shared" and the "Scope" indicates a node that can share disks with respect to the class. To accept the settings, click the <OK> button.

   Inputting Class Name

   Class name will be used for the device path name.

   /dev/sfdsk/class name/[r]dsk/volume name

   You must be careful when inputting the class name, as once the volume is created, it cannot be changed.

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

   To change the scope, click the <Change Scope> button.

   After clicking the <Change Scope> button, the [Change Scope] dialog box appears.

   [Figure: Change Scope]

   

   • Specify one or more nodes by checking or unchecking the boxes on the [Change Scope] dialog box.
   • Click the <OK> button on the [Change Scope] dialog box to accept the changes of nodes that can share the class.
   • The <Cancel> button on the [Change Scope] dialog box can cancel changing scope.

   This operation determines the class name.

   If you press <Cancel> in the Class Attributes Definition screen, registration of the physical disk itself will be canceled.
   
   

4. Setting disk attributes

   Selecting the "Disk Name" in the [Class Configuration Disk] field allows you to set the disk attributes. From here, you can change the "Disk Name" and "Type".

   1. Changing disk name

      Double-click the "Disk Name" in the [Class Configuration Disk] field, and change the name.
      

   2. Changing disk type

      Display the "Disk Type" in the [Class Configuration Disk] field and select the disk type you wish to change from the list. When specifying as a spare disk select "spare." When specifying as a single disk, select "single." Default is set to "undef."
      
      

5. Completing class creation

   After creating all classes, press <Exit> and close Class Configuration screen.

   Class Resources

   • Class resources are added through class creation and removed through class removal.
   • To remove class resources, remove the corresponding classes without using PRIMECLUSTER commands.
   • Configure cluster applications that use class resources only after volume configuration is complete.

   
   For the cluster system installation and initial setting procedures, see "PRIMECLUSTER Cluster Foundation Configuration and Administration Guide."