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Sun Cluster Software Installation Guide for Solaris OS

ProcedureHow to Add Drives to a Disk Set

Before You Begin

Ensure that the disk set has been created. For instructions, see How to Create a Disk Set.

  1. Become superuser.

  2. List the DID mappings.


    phys-schost# cldevice show | grep Device

    • Choose drives that are shared by the cluster nodes that will master or potentially master the disk set.

    • Use the full DID device name, which has the form /dev/did/rdsk/dN,when you add a drive to a disk set.

    In the following example, the entries for DID device /dev/did/rdsk/d3 indicate that the drive is shared by phys-schost-1 and phys-schost-2.


    === DID Device Instances ===                   
DID Device Name:                                /dev/did/rdsk/d1
  Full Device Path:                               phys-schost-1:/dev/rdsk/c0t0d0
DID Device Name:                                /dev/did/rdsk/d2
  Full Device Path:                               phys-schost-1:/dev/rdsk/c0t6d0
DID Device Name:                                /dev/did/rdsk/d3
  Full Device Path:                               phys-schost-1:/dev/rdsk/c1t1d0
  Full Device Path:                               phys-schost-2:/dev/rdsk/c1t1d0
…

  3. Become owner of the disk set.


    phys-schost# cldevicegroup switch -n node devicegroup
    -n node

    Specifies the node to take ownership of the device group.

    devicegroup

    Specifies the device group name, which is the same as the disk set name.

  4. Add the drives to the disk set.

    Use the full DID path name.


    phys-schost# metaset -s setname -a /dev/did/rdsk/dN
    -s setname

    Specifies the disk set name, which is the same as the device group name.

    -a

    Adds the drive to the disk set.

    Note –

    Do not use the lower-level device name (cNtXdY) when you add a drive to a disk set. Because the lower-level device name is a local name and not unique throughout the cluster, using this name might prevent the metaset from being able to switch over.

  5. Verify the status of the disk set and drives.


    phys-schost# metaset -s setname
Example 4–7 Adding Drives to a Disk Set

The metaset command adds the drives /dev/did/rdsk/d1 and /dev/did/rdsk/d2 to the disk set dg-schost-1.


phys-schost# metaset -s dg-schost-1 -a /dev/did/rdsk/d1 /dev/did/rdsk/d2
Next Steps

To repartition drives for use in volumes, go to How to Repartition Drives in a Disk Set.

Otherwise, go to How to Create an md.tab File to define metadevices or volumes by using an md.tab file.