Boot Environment Tips & Tricks¶
Reboot to Roll Back¶
Create a new ZFS Boot Environment before making potentially disruptive changes to the firewall. This represents the current known-good state of the firewall.
While boot environments are helpful, they do not remove the need for off-device backups. Take separate configuration backups before starting any potentially disruptive set of changes.
Activate the new ZFS Boot Environment persistently with
Proceed to make the changes and monitor the firewall state.
If the changes caused a problem:
Reboot and the firewall will restart from the ZFS Boot Environment with the known-good state.
If the changes are OK:
Activate the default ZFS Boot Environment to continue using the new changes on future reboots.