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 devmapper is complaining about free disk space?

devmapper: Thin Pool has 82984          


        

Answer 1

You can use:

docker system prune -a -f --volumes

where:

• -a == removes all unused images
• -f == force
• --volumes == prune volumes.

see: https://docs.docker.com/engine/reference/commandline/system_prune/#description

as a side note, I had a lot of issues when I used devicemapper driver on my environment. I used to clean as I mentioned, but there were still other devicemapper issues. I strongly recommend moving to overlay2, it solved almost everything completely.