Docker-gc hangs about docker-gc HOT 9 CLOSED

Was there any outcome to this @chris-martin? Is it still reproducible?

from docker-gc.

It is reproducible (tried again just now). I haven't done any further investigation.

The output looks like this (with many lines removed for brevity and container info redacted):

Container running <id> <name>
Container running <id> <name>
Container running <id> <name>
Container running <id> <name>
Container not running <id> <name>
Container not running <id> <name>
Container not running <id> <name>
Container removed <id> <name>
Container removed <id> <name>
Container removed <id> <name>

from docker-gc.

top shows a process called kworker consuming one CPU while the docker-gc container is running.

docker stop is sufficient to kill it.

from docker-gc.

Can you share some details of your setup like OS/distribution, docker version, what version/commit of docker-gc this is, etc?

from docker-gc.

I'm just running exactly the command given above, so the docker-gc version... whatever's on Docker Hub, right?

The Docker version is also given in the first comment.

My distro is NixOS 15.09.

from docker-gc.

I'm afraid I don't have a NixOS setup to try to easily reproduce this on.

One thing you could try is to grab the docker-gc from master and run that with sudo bash -x docker-gc and see if you get the same hanging, and if so let us know which command seems to cause that.

Since it's not an OS we are familiar with any more hints as to what the issue might be would be really helpful to resolve it.

from docker-gc.

Oh, I see what's going on now. The extra output from running it this way helps. It's at this line:

xargs -n 1 $DOCKER rm --volumes=true < containers.reap &>/dev/null || true

If I periodically run docker ps -a | wc -l while it's running I can see that it is removing containers, not hanging. Maybe it should print something for each container so you can tell that it's making progress?

from docker-gc.

Same thing happened to me. It seems to be taking ~3 seconds to remove an image, with no output on the command line.

from docker-gc.

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

from docker-gc.