IDCFクラウドのDebian Jessieにディスクを追加してDockerのディレクトリを移動する ref: http://qiita.com/masato/items/9ed5d4aa5d3995395c87

file0.txt

$ cat /etc/debian_version
8.2
$ cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
NAME="Debian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"

file1.txt

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        15G   12G  2.7G  81% /
udev             10M     0   10M   0% /dev
tmpfs           1.6G  110M  1.5G   7% /run
tmpfs           4.0G  740K  4.0G   1% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           4.0G     0  4.0G   0% /sys/fs/cgroup

file10.txt

$ sudo cp -ip /etc/fstab{,.`date +%Y%m%d`}

file11.txt

$ sudo vi /etc/fstab
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
UUID=18de9747-f69a-4f98-a80a-3d4b77145eaa /               ext4    errors=remount-ro 0       1
/dev/sr0        /media/cdrom0   udf,iso9660 user,noauto     0       0
UUID=af1e6cc8-6184-4642-9a0d-5ac917e1d9d3 /media/data ext4 defaults 0  2

file12.txt

$ sudo mount -a
$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1        15G   12G  2.7G  81% /
udev             10M     0   10M   0% /dev
tmpfs           1.6G  8.5M  1.6G   1% /run
tmpfs           4.0G     0  4.0G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           4.0G     0  4.0G   0% /sys/fs/cgroup
/dev/sdb1        99G   60M   94G   1% /media/data

file13.txt

$ sudo systemctl stop docker
$ sudo systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled)
   Active: inactive (dead) since 木 2015-12-31 06:29:44 JST; 14s ago
     Docs: https://docs.docker.com
  Process: 521 ExecStart=/usr/bin/docker daemon -H fd:// $DOCKER_OPTS (code=exited, status=0/SUCCESS)
 Main PID: 521 (code=exited, status=0/SUCCESS)

file14.txt

$ sudo mkdir /media/data/docker
$ sudo rsync -aXS /var/lib/docker/. /media/data/docker/

file15.txt

$ sudo du -sch /var/lib/docker/*
9.6G    /var/lib/docker/aufs
6.8M    /var/lib/docker/containers
11M /var/lib/docker/graph
8.0K    /var/lib/docker/linkgraph.db
72K /var/lib/docker/network
4.0K    /var/lib/docker/repositories-aufs
4.0K    /var/lib/docker/tmp
4.0K    /var/lib/docker/trust
447M    /var/lib/docker/volumes
11G total
$ sudo du -sch /media/data/docker/*
9.9G    /media/data/docker/aufs
6.8M    /media/data/docker/containers
11M /media/data/docker/graph
8.0K    /media/data/docker/linkgraph.db
68K /media/data/docker/network
4.0K    /media/data/docker/repositories-aufs
4.0K    /media/data/docker/tmp
4.0K    /media/data/docker/trust
443M    /media/data/docker/volumes
11G total

file16.txt

$ sudo mv /var/lib/docker /var/lib/docker.bak
$ sudo mkdir /var/lib/docker

file17.txt

$ sudo mount -o bind /media/data/docker /var/lib/docker
$ sudo du -sch /var/lib/docker/*
9.9G    /var/lib/docker/aufs
6.8M    /var/lib/docker/containers
11M /var/lib/docker/graph
8.0K    /var/lib/docker/linkgraph.db
68K /var/lib/docker/network
4.0K    /var/lib/docker/repositories-aufs
4.0K    /var/lib/docker/tmp
4.0K    /var/lib/docker/trust
443M    /var/lib/docker/volumes
11G total

file18.txt

$ df -ha
Filesystem       Size  Used Avail Use% Mounted on
...
/dev/sdb1        99G   11G   83G  12% /media/data
/dev/sdb1        99G   11G   83G  12% /var/lib/docker

file19.txt

$ sudo vi /etc/fstab
/media/data/docker /var/lib/docker  none bind 0 0
$ sudo mount -a

file2.txt

$ sudo reboot

file20.txt

$ sudo systemctl start docker
sudo systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled)
   Active: active (running) since 木 2015-12-31 06:44:08 JST; 5s ago
     Docs: https://docs.docker.com
 Main PID: 1060 (docker)
   CGroup: /system.slice/docker.service
           └─1060 /usr/bin/docker daemon -H fd:// --cluster-store=consul://lo...

file21.txt

$ sudo rm -r /var/lib/docker.bak/

file3.txt

$ sudo fdisk -l
Disk /dev/sdb: 100 GiB, 107374182400 bytes, 209715200 sectors

file4.txt

$ sudo fdisk /dev/sdb

file5.txt

$ sudo fdisk -l
...
Device     Boot Start       End   Sectors  Size Id Type
/dev/sdb1        2048 209715199 209713152  100G 83 Linux

file6.txt

$ df -T
Filesystem     Type     1K-blocks     Used Available Use% Mounted on
/dev/sda1      ext4      15348720 11734892   2811116  81% /
udev           devtmpfs     10240        0     10240   0% /dev
tmpfs          tmpfs      1638236     8672   1629564   1% /run
tmpfs          tmpfs      4095588        0   4095588   0% /dev/shm
tmpfs          tmpfs         5120        0      5120   0% /run/lock
tmpfs          tmpfs      4095588        0   4095588   0% /sys/fs/cgroup

file7.txt

$ sudo mkfs.ext4 /dev/sdb1

file8.txt

$ sudo mkdir /media/data

file9.txt

$ sudo blkid /dev/sdb1
/dev/sdb1: UUID="af1e6cc8-6184-4642-9a0d-5ac917e1d9d3" TYPE="ext4" PARTUUID="07a7e924-01"