No Space on CentOS with Docker
I was using Docker on my CentOS machine for a while and had lot of images and containers (around 4GBs). My machine has 8GBs os storage and I kept getting an error from devicemapper whenever trying to remove a Docker container or Docker image with
docker rm or
docker rmi. The error was:
Error response from daemon: Driver devicemapper failed to remove root filesystem. So I stopped the Docker service and tried restarting it, but that failed due to devicemapper. After that I uninstalled Docker and removed all images, containers, and volumes by running the following command:
rm -rf /var/lib/docker. However, after running that it does not seem like any space was freed up:
$ df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 8.0G 7.7G 346M 96% / devtmpfs 1.8G 0 1.8G 0% /dev tmpfs 1.8G 0 1.8G 0% /dev/shm tmpfs 1.8G 193M 1.6G 11% /run tmpfs 1.8G 0 1.8G 0% /sys/fs/cgroup tmpfs 361M 0 361M 0% /run/user/1000 $ du -ch -d 1 | sort -hr 3.6G total 3.6G . 1.7G ./usr 903M ./var 433M ./home 228M ./opt 193M ./run 118M ./boot 17M ./etc 6.4M ./tmp 4.0K ./root 0 ./sys 0 ./srv 0 ./proc 0 ./mnt 0 ./media 0 ./dev
Why does df tell me I am using 7.7G whereas du tells me I am using 3.6G? The figure that du gives (3.6G) should be the correct one since I deleted everything in
One Solution collect form web for “No Space on CentOS with Docker”
I had a similar issue. This ticket was helpful.
Depending on the file system you are using, you will want to use either
zerofree or add the drive to another machine or and use use
If your file system is xfs and you used
xfs_repair then after running that command there should be a
lost+found directory at the root of the drive that contains all the data that was taking upspace but unreachable.
You can then delete that and it will actually be reflected in