SPARC: How to Recover From a Partially Completed Dual-Partition Upgrade

Perform this procedure if a dual-partition upgrade fails and the state of the cluster meets all of the following criteria:

• The nodes of the first partition have been upgraded.

• None of the nodes of the second partition are yet upgraded.

• None of the nodes of the second partition are in cluster mode.

You can also perform this procedure if the upgrade has succeeded on the first partition but you want to back out of the upgrade.

Do not perform this procedure after dual-partition upgrade processes have begun on the second partition. Instead, perform How to Recover from a Failed Dual-Partition Upgrade.

Before You Begin

Before you begin, ensure that all second-partition nodes are halted. First-partition nodes can be either halted or running in noncluster mode.

Perform all steps as superuser.

1. Boot each node in the second partition into noncluster mode.

   # ok boot -x

2. On each node in the second partition, run the scinstall -u recover command.

   # /usr/cluster/bin/scinstall -u recover

   The command restores the original CCR information, restores the original /etc/vfstab file, and eliminates modifications for startup.

3. Boot each node of the second partition into cluster mode.

   # shutdown -g0 -y -i6

   When the nodes of the second partition come up, the second partition resumes supporting cluster data services while running the old software with the original configuration.

4. Restore the original software and configuration data from backup media to the nodes in the first partition.

5. Boot each node in the first partition into cluster mode.

   # shutdown -g0 -y -i6

   The nodes rejoin the cluster.