Docker 指定容量

vim /etc/sysconfig/docker-storage加入以下命令

DOCKER_STORAGE_OPTIONS="--storage-driver devicemapper --storage-opt dm.basesize=30G"
#DOCKER_STORAGE_OPTIONS="--storage-driver overlay2 "

vim /etc/sysconfig/docker-storage-setup 加入以下命令

#STORAGE_DRIVER=overlay2

STORAGE_DRIVER=devicemapper

重启 service docker restart

扩容docker总容量

mkdir -p /export/docker/

cd /var/lib/ ;rm -rf docker ;ln -s /export/docker/ .

mkdir -p /var/lib/docker/devicemapper/devicemapper

dd if=/dev/zero of=/var/lib/docker/devicemapper/devicemapper/data bs=1G count=0 seek=2000