# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

description   "Run ureadahead for arcvm"
author        "chromium-os-dev@chromium.org"

# Preload the arcvm image file into the page cache while users are entering
# their password.
start on login-prompt-visible

# TODO(b/135556154): Stop this job if crosvm crashes.
stop on arc-booted or stopping ui

# By default upstart gives at most 5 seconds to processes after sending them
# a SIGTERM before killing them which wouldn't always give enough time to
# ureadahead to write the trace file when it's in tracing mode.
kill timeout 30

script
  PACK=/opt/google/vms/android/ureadahead.pack

  {
    echo "Start arcvm-ureadahead"
    set -x

    # Read-ahead files in the image.
    if [ -f "${PACK}" ]; then
      ureadahead --pack-file="${PACK}" || \
          echo "Failed to start ureadahead pack for ${PACK}"
    else
      echo "ureadahead pack is not available at ${PACK}"
    fi
  } 2>&1 | runcon u:r:cros_arcvm_logger:s0 logger -t "${UPSTART_JOB}"
end script