[WSL2] bind mount (--mount) with a directory does not exist does not generate errors #10422
Description
- I have tried with the latest version of Docker Desktop
- I have tried disabling enabled experimental features
- I have uploaded Diagnostics
- Diagnostics ID:
00EF965D-AD0F-462B-B261-776161C213A0/20210219042536
Actual behavior
With WSL Integration, bind mounting the directory that does not exist in the host
does not generate errors and automatically creates the directory instead.
[sarisia@Marine test]$ docker run --mount "type=bind,src=$(pwd)/bindtest,dst=/bindtest" --name bindtest -d nginx
ab2d73dda77767915206486ec9953ab520a6ca34e3a1eba238d1d1f50d2887a3
[sarisia@Marine test]$ ls -al
total 12
drwxr-xr-x 3 sarisia sarisia 4096 Feb 19 13:20 .
drwxr-xr-x 7 sarisia sarisia 4096 Feb 19 13:20 ..
drwxr-xr-x 2 root root 4096 Feb 19 13:20 bindtest
Expected behavior
docker run should generate errors, as described in the docs
Tested the same command with the Ubuntu VM (VMWare Workstation Player):
sarisia@ubuntu:~/run$ sudo docker run --mount "type=bind,src=$(pwd)/bindtest,dst=/bindtest" --name bindtest -d nginx
docker: Error response from daemon: invalid mount config for type "bind": bind source path does not exist: /home/sarisia/run/bindtest.
See 'docker run --help'.
`docker version` in Ubuntu VM
sarisia@ubuntu:~/run$ sudo docker version
Client: Docker Engine - Community
Version: 20.10.3
API version: 1.41
Go version: go1.13.15
Git commit: 48d30b5
Built: Fri Jan 29 14:33:21 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.3
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: 46229ca
Built: Fri Jan 29 14:31:32 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.3
GitCommit: 269548fa27e0089a8b8278fc4fc781d7f65a939b
runc:
Version: 1.0.0-rc92
GitCommit: ff819c7e9184c13b7c2607fe6c30ae19403a7aff
docker-init:
Version: 0.19.0
GitCommit: de40ad0
Information
- Windows Version:
Edition Windows 10 Education
Version 20H2
Installed on 11/2/2020
OS build 19042.804
Experience Windows Feature Experience Pack 120.2212.551.0
- Docker Desktop Version:
3.1.0 (51484) - WSL2 or Hyper-V backend?: WSL2
- Are you running inside a virtualized Windows e.g. on a cloud server or a VM: No
docker version in WSL2:
[sarisia@Marine test]$ docker version
Client: Docker Engine - Community
Cloud integration: 1.0.7
Version: 20.10.2
API version: 1.41
Go version: go1.13.15
Git commit: 2291f61
Built: Mon Dec 28 16:17:34 2020
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.2
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: 8891c58
Built: Mon Dec 28 16:15:28 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.3
GitCommit: 269548fa27e0089a8b8278fc4fc781d7f65a939b
runc:
Version: 1.0.0-rc92
GitCommit: ff819c7e9184c13b7c2607fe6c30ae19403a7aff
docker-init:
Version: 0.19.0
GitCommit: de40ad0
Steps to reproduce the behavior
- make sure you have no
bindtestdirectory in the host:
[sarisia@Marine test]$ ls -al
total 8
drwxr-xr-x 2 sarisia sarisia 4096 Feb 19 13:37 .
drwxr-xr-x 7 sarisia sarisia 4096 Feb 19 13:20 ..
- run the container with bind mount:
[sarisia@Marine test]$ docker run --mount "type=bind,src=$(pwd)/bindtest,dst=/bindtest" --name bindtest -d nginx
ab2d73dda77767915206486ec9953ab520a6ca34e3a1eba238d1d1f50d2887a3
- step 2 should be error, but it's not. Instead,
bindtestdirectory is created.
[sarisia@Marine test]$ ls -al
total 12
drwxr-xr-x 3 sarisia sarisia 4096 Feb 19 13:20 .
drwxr-xr-x 7 sarisia sarisia 4096 Feb 19 13:20 ..
drwxr-xr-x 2 root root 4096 Feb 19 13:20 bindtest