Docker 尝试 mkdir 我挂载的文件夹

为什么 Docker 试图创建我正在挂载的文件夹? 如果我 cd 到 C: Userszx 项目

docker run --rm -it -v "${PWD}:/src" ubuntu /bin/bash

该命令退出时出现以下错误:

C:\Program Files\Docker Toolbox\docker.exe: Error response from daemon: error while creating mount source path '/c/Users/szx/Projects': mkdir /c/Users/szx/Projects: file exists.

我在 Windows10家庭版上使用 Docker 工具箱。

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Did you use this container before? You could try to remove all the docker-volumes before re-executing your command.

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

I tried your command locally (MacOS) without any error.

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Make sure the folder is being shared with the docker embedded VM. This differs with the various types of docker for desktop installs. With toolbox, I believe you can find the shared folders in the VirtualBox configuration. You should also note that these directories are case sensitive. One way to debug is to try:

docker run --rm -it -v "/:/host" ubuntu /bin/bash

And see what the filesystem looks like under "/host".

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I got this error after changing my Windows password. I had to go into Docker settings and do "Reset credentials" under "Shared Drives", then restart Docker.

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I faced this error when another running container was already using folder that is being mounted in docker run command. Please check for the same & if not needed then stop the container. Best solution is to use volume by using following command -

docker volume create

then Mount this created volume if required to be used by multiple containers..

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In case you work with a separate Windows user, with which you share the volume (C: usually): you need to make sure it has access to the folders you are working with -- including their parents, up to your home directory.

Also make sure that EFS (Encrypting File System) is disabled for the shared folders.

See also my answer here.

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For anyone having this issue in linux based os, try to remount your remote folders which are used by docker image. This helped me in ubuntu:

sudo mount -a
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I have encountered this problem on Docker (Windows) after upgrading to 2.2.0.0 (42247). The issue was with casing in the folder name that I've provided in my arguments to docker command.

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Had the exact error. In my case, I used c instead of C when changing into my directory.

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I met this problem too. I used to run the following command to share the folder with container

docker run ... -v c:/seleniumplus:/dev/seleniumplus ...

But it cannot work anymore.

I am using the Windows 10 as host. My docker has recently been upgraded to "19.03.5 build 633a0e". I did change my windows password recently.

I followed the instructions to re-share the "C" drive, and restarted the docker and even restarted the computer, but it didn't work :-(. All of sudden, I found that the folder is "C:\SeleniumPlus" in the file explorer, so I ran

docker run ... -v C:/SeleniumPlus:/dev/seleniumplus ...

And it did work. So it is case-sensitive when we specify the windows shared folder in the latest docker ("19.03.5 build 633a0e").

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My trouble was a fuse-mounted volume (e.g. sshfs, etc.) that got mounted again into the container. I didn't help that the fuse-mount had the same ownership as the user inside the container.

I assume the underlying problem is that the docker/root supervising process needs to get a hold of the fuse-mount as well when setting up the container.

Eventually it helped to mount the fuse volume with the allow_other option. Be aware that this opens access to any user. Better might be allow_root – not tested, as blocked for other reasons.

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For anyone running mac/osx and encountering this, I restarted docker desktop in order to resolve this issue.

Edit: It would appear this also fixes the issue on Windows 10

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I am working in Linux (WSL2 under Windows, to be more precise) and my problem was that there existed a symlink for that folder on my host:

# docker run --rm -it -v /etc/localtime:/etc/localtime ...
docker: Error response from daemon: mkdir /etc/localtime: file exists.




# ls -al /etc/localtime
lrwxrwxrwx 1 root root 25 May 23  2019 /etc/localtime -> ../usr/share/zoneinfo/UTC

It worked for me to bind mount the source /usr/share/zoneinfo/UTC instead.

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I had the same issue when developing using docker. After I moved the project folder locally, Docker could not mount files that were listed with relatives paths, and tried to make directories instead.

Pruning docker volumes / images / containers did not solve the issue. A simple restart of docker-desktop did the job.

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I had this issue when I was working with Docker in a CryFS -encrypted directory in Ubuntu 20.04 LTS. The same probably happens in other UNIX-like OS-es.

The problem was that by default the CryFS-mounted virtual directory is not accessible by root, but Docker runs as root. The solution is to enable root access for FUSE-mounted volumes by editing /etc/fuse.conf: just comment out the use_allow_other setting in it. Then mount the encrypted directory with the command cryfs <secretdir> <opendir> -o allow_root (where <secretdir> and <opendir> are the encrypted directory and the FUSE mount point for the decrypted virtual directory, respectively).

Credits to the author of this comment on GitHub for calling my attention to the -o allow_root option.

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I am running docker desktop(docker engine v20.10.5) on Windows 10 and faced similar error. I went ahead and removed the existing image from docker-desktop UI, deleted the folder in question(for me deleting the folder was an option because i was just doing some local testing), removed the existing container, restarted the docker and it worked

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I had this problem when the directory on my host was inside a directory mounted with gocryptfs. By default even root can't see the directory mounted by gocryptfs, only the user who executed the gocryptfs command can. To fix this add user_allow_other to /etc/fuse.conf and use the -allow_other flag e.g. gocryptfs -allow_other encrypted mnt

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In my case my volume path (in a .env file for docker-compose) had a space in it

/Volumes/some\ thing/folder

which did work on Docker 3 but didn't after updating to Docker 4. So I had to set my env variable to :

"/Volumes/some thing/folder"
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I have put the user_allow_other in /etc/fuse.conf. Then mounting as in the example below has solved the problem.

$ sshfs -o allow_other user@remote_server:/directory/
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I solved this by restarting docker and rebuilding the images.

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I had this issue in WSL, likely caused by leaving some containers alive too long. None of the advice here worked for me. Finally, based on this blog post, I managed to fix it with the following commands, which wipe all the volumes completely to start fresh.

docker-compose down
docker rm -f $(docker ps -a -q)
docker volume rm $(docker volume ls -q)
docker-compose up

Then, I restarted WSL (wsl --shutdown), restarted docker desktop, and tried my command again.

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In my specific instance, Windows couldn't tell me who owned my SSL certs (probably docker). I took control of the SSL certs again under Properties, added read permission for docker-users and my user, and it seemed to have fixed the problem. After tearing my hair out for 3 days with just the Daemon: Access Denied error, I finally got a meaningful error regarding another answer above "mkdir failed" or whataever on a mounted file (the SSL cert).

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This error crept up for me because the problem was that my docker-compose file was looking for the APPDATA path on my machine on mac OS. MacOS doesn't have an APPDATA environment variable so I just created a .env file with the contents:

APPDATA=~/Library/

And my problem was solved.


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