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Sun Cluster Quick Start Guide for Solaris OS

Configuring Volume Management

Perform the following procedures to configure volume management.

ProcedureHow to Create Disk Sets

  1. From phys-sun, create one disk set for each data service that you will configure.

    1. Make phys-sun the primary node for the Apache and NFS data services.


      phys-sun# metaset -s nfsset -a -h phys-sun phys-moon
phys-sun# metaset -s apacheset -a -h phys-sun phys-moon

    2. Make phys-moon the primary node for the Oracle data service.


      phys-sun# metaset -s oraset -a -h phys-moon phys-sun

  2. Verify that the configuration of the disk sets is correct and visible to both nodes.


    phys-X# metaset
Set name = nfsset, Set number = 1
…
Set name = apacheset, Set number = 2
…
Set name = oraset, Set number = 3
…

ProcedureHow to Add LUNs to Disk Sets

  1. From phys-sun, list the DID mappings.

    Output is similar to the following, where WWN stands for the unique World Wide Number (WWN) of the disk target.


    phys-sun# cldevice show | grep Device
=== DID Device Instances ===                   
DID Device Name:                                /dev/did/rdsk/d1
  Full Device Path:                                phys-sun:/dev/rdsk/c0t0d0
DID Device Name:                                /dev/did/rdsk/d2
  Full Device Path:                                phys-sun:/dev/rdsk/c0t6d0
DID Device Name:                                /dev/did/rdsk/d3
  Full Device Path:                                phys-sun:/dev/rdsk/c1tWWNd0
  Full Device Path:                                phys-moon:/dev/rdsk/c1tWWNd0
DID Device Name:                                /dev/did/rdsk/d4
  Full Device Path:                                phys-sun:/dev/rdsk/c1tWWNd0
  Full Device Path:                                phys-moon:/dev/rdsk/c1tWWNd0
DID Device Name:                                /dev/did/rdsk/d5
  Full Device Path:                                phys-sun:/dev/rdsk/c0tWWNd0
  Full Device Path:                                phys-moon:/dev/rdsk/c0tWWNd0
…

  2. Map LUN0, LUN1, and LUN2 to their DID device names.

    Compare the information that you saved when you created the LUNs with the output of the cldevice command. For each LUN, locate the /dev/rdsk/cNtWWNdY name that is associated with the LUN. Then find that same disk name in the cldevice output to determine the DID device name.

    These procedures assume the following mappings for the purposes of this example. Substitute your own disk names and DID names when you perform the remainder of these procedures.

    Data Service 

    LUN Name 

    Raw Disk Device Name 

    DID Name 

    Sun Cluster HA for Oracle 

    LUN0

    /dev/did/rdsk/c1tWWNd0

    dsk/d3

    Sun Cluster HA for NFS 

    LUN1

    /dev/did/rdsk/c1tWWNd0

    dsk/d4

    Sun Cluster HA for Apache 

    LUN2

    /dev/did/rdsk/c0tWWNd0

    dsk/d5

  3. Take ownership of the Oracle disk set oraset.


    phys-sun# cldevicegroup switch -n phys-sun oraset

  4. Add LUN0 to the Oracle disk set.

    Use the full DID path name.


    phys-sun# metaset -s oraset -a /dev/did/rdsk/d3

  5. Verify that the configuration of the disk set is correct.


    phys-sun# metaset -s oraset

  6. Repeat the process to add LUN1 to the NFS disk set nfsset.


    phys-sun# cldevicegroup switch -n phys-sun nfsset
phys-sun# metaset -s nfsset -a /dev/did/rdsk/d4
phys-sun# metaset -s nfsset

  7. Repeat the process to add LUN2 to the Apache disk set apacheset.


    phys-sun# cldevicegroup switch -n phys-sun apacheset
phys-sun# metaset -s apacheset -a /dev/did/rdsk/d5
phys-sun# metaset -s apacheset

ProcedureHow to Create and Activate an md.tab File

  1. On both nodes, create an /etc/lvm/md.tab file with the following entries.

    These entries define the volumes for each disk set. The one-way mirrors provide flexibility to add a mirror later without unmounting the file system. You can create the file on one node and copy it to the other node, or you can create it on both nodes at the same time by using the cconsole(1M) utility.


    apacheset/d0 -m apacheset/d10 
    apacheset/d10 1 1 /dev/did/rdsk/d3s0
 
nfsset/d1 -m nfsset/d11
    nfsset/d11 1 1 /dev/did/rdsk/d4s0
 
oraset/d2 -m oraset/d12
    oraset/d12 1 1 /dev/did/rdsk/d5s0
 
oraset/d0 -p oraset/d2 3G
oraset/d1 -p oraset/d2 3G

  2. From phys-sun, take ownership of each of the disk sets and activate their volumes.


    phys-sun# cldevicegroup switch -n phys-sun apacheset
phys-sun# metainit -s apacheset -a

phys-sun# cldevicegroup switch -n phys-sun nfsset
phys-sun# metainit -s nfsset -a

phys-moon# cldevicegroup switch -n phys-sun oraset
phys-moon# metainit -s oraset -a

  3. Check the status of the volumes for each disk set.


    phys-sun# metastat
…
Status: Okay
…