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README.md

quay.io/tinkerbell/actions/qemuimg2disk:latest

This action will stream a remote disk image to a block device, and is mainly used to write cloud images to a disk.

Under the hood this action uses qemu-img which in turn is built atop libcurl. This has two nice benefits:

  1. Full SSL support allows images to be streamed from anywhere on the internet
  2. Support for the QCOW2 image format which is used by some OS vendors as a standard format

This action could be used as part of a workflow to stream the latest Ubuntu image directly from Canonical onto block storage disk /dev/sda like so:

actions:
- name: "stream ubuntu"
  image: quay.io/tinkerbell/actions/qemuimg2disk:latest
  timeout: 300
  environment:
      IMG_URL: https://cloud-images.ubuntu.com/daily/server/focal/current/focal-server-cloudimg-amd64.img
      DEST_DISK: /dev/sda