在主机上找不到 Docker 数据卷

Question

I have CoreOS running inside a Vagrant box. My working directory is /home/core .

I then run docker run -p 8080:8080 -p 50000:50000 -v jenkins_home:/var/jenkins_home jenkins . The container starts without any problems.

Unfortunately I can't find the mounted volume inside my Vagrant box. I assumed it would be in /home/core/jenkins_home but it ain't there. /home/core/ is empty.

Where is this directory?

Answer 1

The advice to use an absolute host path for volumes is in the comments (hat tip @Hy L), but the question of where the data went with the relative path was still an open issue. I'm on WSL2 and I finally found my data at

/mnt/wsl/docker-desktop-data/data/docker

and I needed sudo to look inside the following directory to see data from my relative mount ( pipeline_runs ):

sudo ls volumes/pipeline_runs/_data

I don't have a full understanding but I take it that this is where the Hyper-V machine is storing its data, so when you specify a relative path, it's actually relative to a path on that (virtual) machine.