docker-direct-lvm

docker-direct-lvm.sh

#!/bin/bash
set -e

## striping seems to break docker
#STRIPE="-i2 -I64"
#DEVS="/dev/xvdf /dev/xvdg"
DEVS="$1"
if [ -z "$DEVS" ]; then
	echo >&2 "Specify which block devices to use"
	exit 1
fi

if which systemctl >/dev/null 2>&1; then
	if systemctl status docker.service; then
		systemctl stop docker.service
		START=yes
	fi
else
	if service docker status | grep 'start'; then
	  service docker stop
	  START=yes
	fi
fi

rm -fr /var/lib/docker
#for i in /dev/mapper/docker-*; do umount $i || true; dmsetup remove $i; done

set +e
for i in /dev/mapper/docker-*; do umount $i; dmsetup remove $i; done
set -e

pvcreate -y $DEVS && \
pvdisplay && \
vgcreate -y docker-storage $DEVS && \
lvcreate --size 29.50G --type thin-pool --thinpool docker-pool docker-storage && \
#lvcreate  -V4G -T docker-storage/docker-pool --name docker-poolmeta \
lvs
#df -h && \
#dd if=/dev/zero of=/dev/docker-storage/docker-poolmeta bs=1M count=10

#pvcreate -y $DEVS && \
#vgcreate -y direct-lvm $DEVS && \
#lvcreate $STRIPE -y -Wy -Zy -n data direct-lvm -l 95%VG  && \
#lvcreate $STRIPE -y -Wy -Zy -n metadata direct-lvm -l 5%VG  && \
#dd if=/dev/zero of=/dev/direct-lvm/metadata bs=1M count=10

echo 'DOCKER_OPTS="$DOCKER_OPTS --storage-driver=devicemapper --storage-opt dm.thinpooldev=docker--storage-docker--pool-tpool --storage-opt dm.fs=xfs --storage-opt dm.blocksize=512K"' | tee -a /etc/default/docker

if which systemctl >/dev/null 2>&1; then
	if [ "$START" = yes ]; then
		  systemctl start docker.service
	fi
else
	if [ "$START" = yes ]; then
		  service docker start
	fi
fi