Recover from an Upgrade Failure

You can recover from an upgrade failure by rerunning the upgrade, by performing a fresh installation and then restoring the system from a backup, or by reverting a TPVM snapshot.

1. To rerun the upgrade, follow the steps for the type of upgrade you were attempting.
   • Upgrade EFA from a Single-Node to a Multi-Node Deployment
   • Upgrade EFA on TPVM in a Single-node Deployment
   • Upgrade EFA in a Single-node Deployment
   • Upgrade EFA in a Multi-Node Deployment
   • Upgrade EFA on TPVM in a Multi-Node Deployment
2. To perform a fresh installation and restore the system backup, take the following steps.
   1. Uninstall EFA to remove any components that might have been installed before the upgrade failed.
      • Uninstall EFA on TPVM in a Multi-Node Deployment
      • Uninstall EFA in a Multi-node Deployment
      • Uninstall EFA on TPVM in a Single-Node Deployment
      • Uninstall EFA in a Single-Node Deployment
   2. Follow the steps for the type of installation you need.
      • Install EFA on TPVM in a Multi-Node Deployment
      • Install EFA in a Multi-Node Deployment
      • Install EFA on TPVM in a Single-Node Deployment
      • Install EFA in a Single-Node Deployment
   3. Restore the EFA backup.
      

      device# efa system restore --backup-tar <filename>.tar.gz

      For more information about backup tar files, see the "EFA System Backup and Restoration" section of the Extreme Fabric Automation Administration Guide, 2.5.0 .
3. (For SLX-OS 20.3.2a or later) To revert TPVM from a snapshot and then restore EFA, take the following steps.
   This step is applicable only if you created a TPVM snapshot (using the tpvm snapshot create command) before upgrade.
   1. Revert to the TPVM snapshot.
      

      tpvm snapshot revert

      The revert process can take about 10 minutes.
   2. Restore the EFA backup.
      

      device# efa system restore --backup-tar <filename>.tar.gz

      For more information about backup tar files, see the "EFA System Backup and Restoration" section of the Extreme Fabric Automation Administration Guide, 2.5.0 .