On Junos VMhost platforms, while upgrading through the following command: request vmhost software add /var/tmp/junos-vmhost-install-mx-xxx.tgz no-validate reboot

There are tar errors during the upgrade, when reboot option is used. It will still reboot the RE (Routing Engine) despite that the upgrade was not complete. The solution for this issue is to first perform the upgrade and once it is finished, then proceed with the reboot.

This issue might be seen if the following conditions are met:
* On Junos VMhost platforms
* Upgrading though command: request vmhost software add /var/tmp/junos-vmhost-install-mx-xxx.tgz no-validate reboot

Issue identified when upgrading vmhost, but applies to all Junos platforms that support vmhost.

When there are tar errors during the upgrade, and the reboot option is used in the upgrade command, the machine will still reboot the RE despite that the upgrade was not completed correctly.

This will break the routing engine. It is necessary to stop the reboot, if error or tar problems occurred during the upgrade.

Workaround

• Do not use reboot command with update.
• Reboot can be done after upgraded.