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Sun Cluster Upgrade Guide for Solaris OS

ProcedureHow to Recover from a Failed Dual-Partition Upgrade

If you experience an unrecoverable error during upgrade, perform this procedure to back out of the upgrade.

Note –

You cannot restart a dual-partition upgrade after the upgrade has experienced an unrecoverable error.

  1. Become superuser on each node of the cluster.

  2. Boot each node into noncluster mode.

    • On SPARC based systems, perform the following command:


      ok boot -x

    • On x86 based systems, perform the following commands:

      1. In the GRUB menu, use the arrow keys to select the appropriate Solaris entry and type e to edit its commands.

        The GRUB menu appears similar to the following:


        GNU GRUB version 0.95 (631K lower / 2095488K upper memory)
+----------------------------------------------------------------------+
| Solaris 10 /sol_10_x86                                               |
| Solaris failsafe                                                     |
|                                                                      |
+----------------------------------------------------------------------+
Use the ^ and v keys to select which entry is highlighted.
Press enter to boot the selected OS, 'e' to edit the
commands before booting, or 'c' for a command-line.

        For more information about GRUB based booting, see Booting an x86 Based System by Using GRUB (Task Map) in System Administration Guide: Basic Administration.

      2. In the boot parameters screen, use the arrow keys to select the kernel entry and type e to edit the entry.

        The GRUB boot parameters screen appears similar to the following:


        GNU GRUB version 0.95 (615K lower / 2095552K upper memory)
+----------------------------------------------------------------------+
| root (hd0,0,a)                                                       |
| kernel /platform/i86pc/multiboot                                     |
| module /platform/i86pc/boot_archive                                  |
+----------------------------------------------------------------------+
Use the ^ and v keys to select which entry is highlighted.
Press 'b' to boot, 'e' to edit the selected command in the
boot sequence, 'c' for a command-line, 'o' to open a new line
after ('O' for before) the selected line, 'd' to remove the
selected line, or escape to go back to the main menu.

      3. Add -x to the command to specify that the system boot into noncluster mode.


        [ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename. ESC at any time exits. ]

grub edit> kernel /platform/i86pc/multiboot -x

      4. Press Enter to accept the change and return to the boot parameters screen.

        The screen displays the edited command.


        GNU GRUB version 0.95 (615K lower / 2095552K upper memory)
+----------------------------------------------------------------------+
| root (hd0,0,a)                                                       |
| kernel /platform/i86pc/multiboot -x                                  |
| module /platform/i86pc/boot_archive                                  |
+----------------------------------------------------------------------+
Use the ^ and v keys to select which entry is highlighted.
Press 'b' to boot, 'e' to edit the selected command in the
boot sequence, 'c' for a command-line, 'o' to open a new line
after ('O' for before) the selected line, 'd' to remove the
selected line, or escape to go back to the main menu.-

      5. Type b to boot the node into noncluster mode.

        Note –

        This change to the kernel boot parameter command does not persist over the system boot. The next time you reboot the node, it will boot into cluster mode. To boot into noncluster mode instead, perform these steps to again to add the -x option to the kernel boot parameter command.

  3. On each node, run the upgrade recovery script from the installation media.

    If the node successfully upgraded to Sun Cluster 3.2 1/09 software from an earlier 3.2 release, you can alternatively run the scinstall command from the /usr/cluster/bin directory.

    Note –

    If you upgraded from a Sun Cluster 3.1 release, run the scinstall command only from the installation media. Recovery capability for dual-partition upgrade is not available from the 3.1 versions of the scinstall command.


    phys-schost# cd /cdrom/cdrom0/Solaris_arch/Product/sun_cluster/Solaris_ver/Tools
phys-schost# ./scinstall -u recover
    -u

    Specifies upgrade.

    recover

    Restores the /etc/vfstab file and the Cluster Configuration Repository (CCR) database to their original state before the start of the dual-partition upgrade.

    The recovery process leaves the cluster nodes in noncluster mode. Do not attempt to reboot the nodes into cluster mode.

    For more information, see the scinstall(1M) man page.

  4. Perform either of the following tasks.

    • Restore the old software from backup to return the cluster to its original state.

    • Continue to upgrade software on the cluster by using the standard upgrade method.

      This method requires that all cluster nodes remain in noncluster mode during the upgrade. See the task map for standard upgrade, Table 2–1. You can resume the upgrade at the last task or step in the standard upgrade procedures that you successfully completed before the dual-partition upgrade failed.