magnum/magnum/drivers/swarm_fedora_atomic_v1/templates/fragments/configure-docker-storage.sh

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#!/bin/sh
. /etc/sysconfig/heat-params
attempts=60
while [ ${attempts} -gt 0 ]; do
id=$(echo $DOCKER_VOLUME | awk '{ string=substr($0, 1, 20); print string; }')
device_name=$(ls /dev/disk/by-id | grep $id)
if [ -n "${device_name}" ]; then
break
fi
echo "waiting for disk device"
sleep 0.5
udevadm trigger
attempts=$((attempts-1))
done
if [ -z "${device_name}" ]; then
echo "ERROR: disk device does not exist" >&2
exit 1
fi
device_path=/dev/disk/by-id/${device_name}
$configure_docker_storage_driver
if [ "$DOCKER_STORAGE_DRIVER" = "overlay" ]; then
if [ $(echo -e "$(uname -r)\n3.18" | sort -V | head -1) \
= $(uname -r) ]; then
ERROR_MESSAGE="OverlayFS requires at least Linux kernel 3.18. Bay node kernel version: $(uname -r)"
echo "ERROR: ${ERROR_MESSAGE}" >&2
sh -c "${WAIT_CURL} --data-binary '{\"status\": \"FAILURE\", \"reason\": \"${ERROR_MESSAGE}\"}'"
else
configure_overlay
fi
else
configure_devicemapper
fi