--- fixes: - | The image format inspection and image safety check have been disabled for ISO images cached by Ironic. The feature has been disabled in order to fix issues originally described in bug 2091611. On occasion Ironic has detected multiple image formats for ISO image that contained GPT, the issue originated from the fact that by default the oslo_utils.imageutils library handles the GPT partition table format as additional image format but allows only 1 image format for each image and throws an error if it detects gpt+iso. As the image inspection and safety check was intended to fix a security problem related to qemu-img-tools and qcow images, it has been decided that the inspection and safety check can be disabled ISO images without degrading Ironic's security.