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Sun Cluster 3.0-3.1 With Sun StorEdge T3 or T3+ Array Manual for Solaris OS

ProcedureHow to Migrate From a Single-Controller Configuration to a Partner-Group Configuration

Use this procedure to migrate your storage arrays from a single-controller (noninterconnected) configuration to a partner-group (interconnected) configuration. This procedure assumes that the two storage arrays in the partner-group configuration are correctly isolated from each other on separate FC switches. Do not disconnect the cables from the FC switches or the nodes.

Caution – Caution –

You must be a Sun service provider to perform this procedure. If you need to migrate from a single-controller configuration to a partner-group configuration, contact your Sun service provider.

Steps

  1. Back up all data on the storage arrays before you remove the storage arrays from the Sun Cluster configuration.

  2. Remove the noninterconnected storage arrays to be in your partner group from the cluster configuration.

    Follow the procedure in How to Remove a Partner Group.

  3. Connect and configure the single storage arrays to form a partner group.

    Follow the procedure in the Sun StorEdge T3 and T3+ Array Field Service Manual.

  4. Ensure that each storage array has a unique target address.

    For the procedure about how to verify and assign a target address to a storage array, see the Sun StorEdge T3 and T3+ Array Configuration Guide.

  5. Ensure that the cache and mirror settings for each storage array are set to auto.

  6. Ensure that the mp_support parameter for each storage array is set to mpxio.

  7. If necessary, upgrade the host adapter firmware on Node A.

    PatchPro is a patch-management tool that eases the selection and download of patches required for installation or maintenance of Sun Cluster software. PatchPro provides an Interactive Mode tool especially for Sun Cluster. The Interactive Tool makes the installation of patches easier. PatchPro's Expert Mode tool helps you to maintain your configuration with the latest set of patches. Expert Mode is especially useful for obtaining all of the latest patches, not just the high availability and security patches.

    To access the PatchPro tool for Sun Cluster software, go to http://www.sun.com/PatchPro/, click Sun Cluster, then choose either Interactive Mode or Expert Mode. Follow the instructions in the PatchPro tool to describe your cluster configuration and download the patches.

    For third-party firmware patches, see the SunSolveSM Online site at http://sunsolve.ebay.sun.com.

  8. If necessary, install the required Solaris patches for storage array support on Node A.

    PatchPro is a patch-management tool that eases the selection and download of patches required for installation or maintenance of Sun Cluster software. PatchPro provides an Interactive Mode tool especially for Sun Cluster. The Interactive Tool makes the installation of patches easier. PatchPro's Expert Mode tool helps you to maintain your configuration with the latest set of patches. Expert Mode is especially useful for obtaining all of the latest patches, not just the high availability and security patches.

    To access the PatchPro tool for Sun Cluster software, go to http://www.sun.com/PatchPro/, click Sun Cluster, then choose either Interactive Mode or Expert Mode. Follow the instructions in the PatchPro tool to describe your cluster configuration and download the patches.

    For third-party firmware patches, see the SunSolveSM Online site at http://sunsolve.ebay.sun.com.

  9. Shut down Node A.

    For the procedure about how to shut down and power off a node, see your Sun Cluster system administration documentation.

  10. Perform a reconfiguration boot on Node A to create the new Solaris device files and links.


    # boot -r

  11. On Node A, update the /devices and /dev entries.


    # devfsadm -C

  12. On Node A, update the paths to the DID instances.


    # scdidadm -C

  13. Label the new storage array logical volume.

    For the procedure about how to label a logical volume, see the Sun StorEdge T3 and T3+ Array Administrator's Guide.

  14. If necessary, upgrade the host adapter firmware on Node B.

    PatchPro is a patch-management tool that eases the selection and download of patches required for installation or maintenance of Sun Cluster software. PatchPro provides an Interactive Mode tool especially for Sun Cluster. The Interactive Tool makes the installation of patches easier. PatchPro's Expert Mode tool helps you to maintain your configuration with the latest set of patches. Expert Mode is especially useful for obtaining all of the latest patches, not just the high availability and security patches.

    To access the PatchPro tool for Sun Cluster software, go to http://www.sun.com/PatchPro/, click Sun Cluster, then choose either Interactive Mode or Expert Mode. Follow the instructions in the PatchPro tool to describe your cluster configuration and download the patches.

    For third-party firmware patches, see the SunSolveSM Online site at http://sunsolve.ebay.sun.com.

  15. If necessary, install the required Solaris patches for storage array support on Node B.

    For a list of required Solaris patches for storage array support, see the Sun StorEdge T3 Disk Tray Release Notes.

  16. Shut down Node B.

    For the procedure about how to shut down and power off a node, see your Sun Cluster system administration documentation.

  17. Perform a reconfiguration boot to create the new Solaris device files and links on Node B.


    # boot -r

  18. On Node B, update the /devices and /dev entries.


    # devfsadm -C

  19. On Node B, update the paths to the DID instances.


    # scdidadm -C

  20. (Optional) On Node B, verify that the DIDs are assigned to the new LUNs.


    # scdidadm -l

  21. On one node that is attached to the new storage arrays, reset the SCSI reservation state.


    # scdidadm -R n

    Where n is the DID instance of a storage array LUN that you are adding to the cluster.

    Note –

    Repeat this command on the same node for each storage array LUN that you are adding to the cluster.

  22. Perform volume management administration to incorporate the new logical volumes into the cluster.

    For more information, see your Solstice DiskSuite or VERITAS Volume Manager documentation.

Next Steps

The best way to enable multipathing for a cluster is to install the multipathing software and enable multipathing before installing the Sun Cluster software and establishing the cluster. For this procedure, see How to Install Sun Multipathing Software in Sun Cluster Software Installation Guide for Solaris OS. If you need to add multipathing software to an established cluster, see How to Install Sun Multipathing Software in Sun Cluster Software Installation Guide for Solaris OS and follow the troubleshooting steps to clean up the device IDs.