Space issue on docker devmapper and CentOS7

Question

I am learning docker and I am using v1.11.0 I am trying to install hadoop, but does devmapper complain about free disk space?

devmapper: Thin Pool has 82984 free data blocks which is less than minimum required 163840 free data blocks. Create more free space in thin pool or use dm.min_free_space option to change behavior 

I deleted all my images, but the problem persists:

 [root@localhost hadoop_docker]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE debian latest 47af6ca8a14a 3 weeks ago 125 MB [root@localhost hadoop_docker]# 

and this is my disk configuration:

 [root@localhost ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 8G 0 disk ├─sda1 8:1 0 500M 0 part /boot └─sda2 8:2 0 7.5G 0 part ├─centos-root 253:0 0 6.7G 0 lvm / └─centos-swap 253:1 0 820M 0 lvm [SWAP] sr0 11:0 1 1024M 0 rom loop0 7:0 0 100G 0 loop └─docker-253:0-844682-pool 253:2 0 100G 0 dm loop1 7:1 0 2G 0 loop └─docker-253:0-844682-pool 253:2 0 100G 0 dm 

QUESTION: How can I free up disk space?

Thank you

Answer 1

Just run these three. No need to remove RUNNING containers.

• Purified Processes:

   docker rm $(docker ps -q -f status=exited) 

• Cleaning volumes:

   docker volume rm $(docker volume ls -qf dangling=true) 

• Cleaning dangling images:

   docker rmi $(docker images --filter "dangling=true" -q --no-trunc)