How to set Docker's Storage Driver to OverlayFS in CentOS7?

Question

CentOS7 How to set docker's Storage Driver to OverlayFS?
What are the specific steps?

Answer 1

==First of all, you need to upgrade to CentOS7.2. An XFS bug has been fixed in the 7.2 system. ==

docker 1.11

Add OverlayFS to the module directory

echo "overlay" > /etc/modules-load.d/overlay.conf

# lsmod | grep over
overlay                42451  0
reboot

Configure Docker Daemon to start with OverlayFS:

Create folder

mkdir -p /etc/systemd/system/docker.service.d

Add parameters:

cat >/etc/systemd/system/docker.service.d/override.conf <<E
[Service] 
ExecStart= 
ExecStart=/usr/bin/docker daemon --storage-driver=overlay -H fd:// 
E

Restart

systemctl daemon-reload
systemctl restart docker

docker 1.12

Add OverlayFS to the module directory

echo "overlay" > /etc/modules-load.d/overlay.conf
lsmod | grep over
reboot

Stop docker service

rm -rf /var/lib/docker

Modify docker configuration file

vi /usr/lib/systemd/system/docker.service

Modify the configuration:
Find the following line

ExecStart=/usr/bin/dockerd 

Add parameters:

--storage-driver=overlay

Restart

systemctl daemon-reload
systemctl restart docker