Container Infrastructure Management Service for OpenStack
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# This file contains docker storage drivers configuration for fedora
# atomic hosts. Currently, devicemapper and overlay are supported.
# * Remove any existing docker-storage configuration. In case of an
# existing configuration, docker-storage-setup will fail.
# * Remove docker storage graph
clear_docker_storage () {
# stop docker
systemctl stop docker
# clear storage graph
rm -rf /var/lib/docker/*
# remove current LVs
docker-storage-setup --reset
if [ -f /etc/sysconfig/docker-storage ]; then
sed -i "/^DOCKER_STORAGE_OPTIONS=/ s/=.*/=/" /etc/sysconfig/docker-storage
fi
}
# Configure docker storage with xfs as backing filesystem.
configure_overlay () {
clear_docker_storage
if [ -n "$DOCKER_VOLUME_SIZE" ] && [ "$DOCKER_VOLUME_SIZE" -gt 0 ]; then
mkfs.xfs -f ${device_path}
echo "${device_path} /var/lib/docker xfs defaults 0 0" >> /etc/fstab
mount -a
fi
echo "STORAGE_DRIVER=overlay" > /etc/sysconfig/docker-storage-setup
docker-storage-setup
local lvname=$(lvdisplay | grep "LV\ Path" | awk '{print $3}')
local pvname=$(pvdisplay | grep "PV\ Name" | awk '{print $3}')
lvextend -r $lvname $pvname
}
# Configure docker storage with devicemapper using direct LVM
configure_devicemapper () {
clear_docker_storage
echo "GROWROOT=True" > /etc/sysconfig/docker-storage-setup
echo "ROOT_SIZE=5GB" >> /etc/sysconfig/docker-storage-setup
if [ -n "$DOCKER_VOLUME_SIZE" ] && [ "$DOCKER_VOLUME_SIZE" -gt 0 ]; then
pvcreate -f ${device_path}
vgcreate docker ${device_path}
echo "VG=docker" >> /etc/sysconfig/docker-storage-setup
else
echo "DATA_SIZE=95%FREE" >> /etc/sysconfig/docker-storage-setup
fi
docker-storage-setup
}