os.rename throws exception when renaming directories on lower overlayfs layers #25409
Description
Output of docker version:
Client:
Version: 1.12.0
API version: 1.24
Go version: go1.6.3
Git commit: 8eab29e
Built: Thu Jul 28 22:11:10 2016
OS/Arch: linux/amd64
Server:
Version: 1.12.0
API version: 1.24
Go version: go1.6.3
Git commit: 8eab29e
Built: Thu Jul 28 22:11:10 2016
OS/Arch: linux/amd64
Output of docker info:
Containers: 2
Running: 0
Paused: 0
Stopped: 2
Images: 29
Server Version: 1.12.0
Storage Driver: overlay2
Backing Filesystem: extfs
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: host bridge null overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options: seccomp
Kernel Version: 4.4.7-1.ng
Operating System: Ubuntu 16.04 LTS
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 15.67 GiB
Name: rovner-qtesting-7
ID: M7UX:OR2K:WJQI:KGPM:XFIJ:UF72:AQ6J:OYUZ:UIBO:6RJZ:LVGN:TT4I
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
WARNING: No kernel memory limit support
Insecure Registries:
127.0.0.0/8
Additional environment details (AWS, VirtualBox, physical, etc.):
root@my-host:/# uname -a
Linux my-host 4.4.7-1.ng #1 SMP Fri Apr 15 17:59:44 MSK 2016 x86_64 x86_64 x86_64 GNU/Linux
Steps to reproduce the issue:
- Build image with Dockerfile
FROM ubuntu:14.04
RUN mkdir /foo && touch /foo/bar
Sending build context to Docker daemon 2.048 kB
Step 1 : FROM ubuntu:14.04
---> 0ccb13bf1954
Step 2 : RUN mkdir /foo && touch /foo/bar
---> Running in dc97258d4d23
---> c6216cc93147
Removing intermediate container dc97258d4d23
Successfully built c6216cc93147
- Rename foo to foo2 with python
os.rename
root@c18071cd5033:/# python3
Python 3.4.3 (default, Oct 14 2015, 20:28:29)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.rename('/foo', '/foo2')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [Errno 18] Invalid cross-device link: '/foo' -> '/foo2'
Describe the results you received:
Rename failed with error OSError: [Errno 18] Invalid cross-device link: '/foo' -> '/foo2'
Describe the results you expected:
Rename finished successfully