Secure erased failed, SATA devices are locked

If the enable_ata_secure_erase parameter in the [deploy] section is set to True (the default value) during cleaning, the SATA disks may be locked after an interruption of the process and have to be unlocked manually with an empty string as password during reboot.

To solve this you have to boot with a rescue system (e.g. TinyIPA) and then execute the following comand: hdparm --security-disable '' /dev/sdX.