locked

The field indicates if the disk is created from a locked source image. Attachment of a disk created from a locked source image will cause the following operations to become irreversibly prohibited: - R/W or R/O disk attachment to any other instance - Disk detachment. And the disk can only be deleted when the instance is deleted - Creation of images or snapshots - Disk cloning Furthermore, the instance with at least one disk with locked flag set to true will be prohibited from performing the operations below: - Further attachment of secondary disks. - Detachment of any disks - Create machine images - Create instance template - Delete the instance with --keep-disk parameter set to true for locked disks - Attach a locked disk with --auto-delete parameter set to false