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solo-io / packer-plugin-arm-image

Packer plugin for ARM images
Apache License 2.0
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Question: Why do we need to share the `/dev` folder of the host machine? #130

Closed xserrat closed 2 years ago

xserrat commented 2 years ago

Hi! I have the question of the subject regarding the need for the /dev folder as a volume mapping when running the docker container. I saw that without this mapping, the process cannot find any partition. Regarding the builder configuration, I've defined the following:

source "arm-image" "ubuntu" {
  iso_url =  "file:///workspace/input-images/ubuntu-20.04.4/ubuntu-20.04.4-preinstalled-server-arm64+raspi.img.zip"
  iso_checksum =  "d75844d7d6606681b6ecbb523c97672626edb40497ac11ec70eed520a2d0459a"
  image_mounts = ["/boot", "/"]
  output_filename = "/workspace/output-arm-images/ubuntu-20.04"
}

The image corresponds to the ubuntu server image for Raspberry. I've added these two mounting points /boot and /, but I'm not sure if it's ok.

Thank you for your time and great plugin :)

yuval-k commented 2 years ago

IIRC we need access to the main loop device to mount the partitions using losetup

xserrat commented 2 years ago

Thanks for your fast reply @yuval-k !