constellation/image/mkosi.skeleton/usr/lib/dracut/modules.d/39constellation-mount/aws-nvme-disk.sh

#!/usr/bin/env bash
# Copyright (c) Edgeless Systems GmbH
#
# SPDX-License-Identifier: AGPL-3.0-only

set -euo pipefail
shopt -s extglob nullglob inherit_errexit

AWS_STATE_DISK_DEVICENAME="sdb"
AWS_STATE_DISK_SYMLINK="/dev/${AWS_STATE_DISK_DEVICENAME}"

# hack: aws nvme udev rules are never executed. Create symlinks for the nvme devices manually.
while [[ ! -L ${AWS_STATE_DISK_SYMLINK} ]]; do
  for nvmedisk in /dev/nvme*n1; do
    linkname=$(nvme amzn id-ctrl -b "${nvmedisk}" | tail -c +3072 | tr -d ' ') || true
    if [[ -n ${linkname} ]] && [[ ${linkname} == "${AWS_STATE_DISK_DEVICENAME}" ]]; then
      ln -s "${nvmedisk}" "${AWS_STATE_DISK_SYMLINK}"
    fi
  done
  if [[ -L ${AWS_STATE_DISK_SYMLINK} ]]; then
    break
  fi
  echo "Waiting for state disk to appear.."
  sleep 2
done

echo "AWS state disk found"
echo "${AWS_STATE_DISK_SYMLINK}" → "$(readlink -f "${AWS_STATE_DISK_SYMLINK}")"