Public bug reported:
Dear maintainers,
I noticed a changed behaviour when starting the Docker service after the
docker.io package was upgraded from 19.3.6 to 20.10.7.
When the Docker host was reset/cleaned, which involves a 'rm -rf
/var/lib/docker/*', the sub-directories are not automatically created
anymore after a start of the service:
root@dockerhost:~# rm -rf /var/lib/docker/*
root@dockerhost:~# service docker start
root@dockerhost:~# ll /var/lib/docker/
total 0
Without these directories, Docker containers cannot be created. Example
with a 'docker pull':
root@dockerhost:~# docker pull rancher/rke-tools:v0.1.78
v0.1.78: Pulling from rancher/rke-tools
540db60ca938: Pulling fs layer
0ae30075c5da: Pulling fs layer
9da81141e74e: Pulling fs layer
b2e41dd2ded0: Pulling fs layer
7f40e809fb2d: Pulling fs layer
758848c48411: Pulling fs layer
4aa8101d7589: Pulling fs layer
68bd44136930: Pulling fs layer
ae3790b81ced: Pulling fs layer
f9c62a2baf95: Pulling fs layer
759049e20249: Pulling fs layer
6713b6a87a77: Pulling fs layer
e1631138f00b: Pulling fs layer
063b41c39c12: Pulling fs layer
c7844f3999c4: Pulling fs layer
d8473758fa62: Pulling fs layer
f83b3d05af4e: Pulling fs layer
open /var/lib/docker/tmp/GetImageBlob573083372: no such file or directory
However a restart does re-create the missing folders:
root@dockerhost:~# service docker restart
root@dockerhost:~# ll /var/lib/docker/
total 44
drwx--x--x 4 root root 4096 Nov 11 13:49 buildkit
drwx--x--- 2 root root 4096 Nov 11 13:49 containers
drwx------ 3 root root 4096 Nov 11 13:49 image
drwxr-x--- 3 root root 4096 Nov 11 13:49 network
drwx--x--- 3 root root 4096 Nov 11 13:49 overlay2
drwx------ 4 root root 4096 Nov 11 13:49 plugins
drwx------ 2 root root 4096 Nov 11 13:49 runtimes
drwx------ 2 root root 4096 Nov 11 13:49 swarm
drwx------ 2 root root 4096 Nov 11 13:49 tmp
drwx------ 2 root root 4096 Nov 11 13:49 trust
drwx-----x 2 root root 4096 Nov 11 13:49 volumes
This happens with docker.io 20.10.x on both Ubuntu 18.04 Bionic and
20.04 Focal.
Compared to the behaviour of docker.io 19.3.x:
root@focal:~# docker info | head
Client:
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 19.03.8
root@focal:~# service docker stop
root@focal:~# rm -rf /var/lib/docker/*
root@focal:~# service docker start
root@focal:~# ll /var/lib/docker/
drwx--x--x 14 root root 4096 Nov 12 07:33 ./
drwxr-xr-x 29 root root 4096 Oct 29 14:06 ../
drwx------ 2 root root 4096 Nov 12 07:33 builder/
drwx--x--x 4 root root 4096 Nov 12 07:33 buildkit/
drwx------ 2 root root 4096 Nov 12 07:33 containers/
drwx------ 3 root root 4096 Nov 12 07:33 image/
drwxr-x--- 3 root root 4096 Nov 12 07:33 network/
drwx------ 3 root root 4096 Nov 12 07:33 overlay2/
drwx------ 4 root root 4096 Nov 12 07:33 plugins/
drwx------ 2 root root 4096 Nov 12 07:33 runtimes/
drwx------ 2 root root 4096 Nov 12 07:33 swarm/
drwx------ 2 root root 4096 Nov 12 07:33 tmp/
drwx------ 2 root root 4096 Nov 12 07:33 trust/
drwx------ 2 root root 4096 Nov 12 07:33 volumes/
Conclusion: The start script in docker.io 20.10.x should create the sub-
directories in /var/lib/docker if they are missing (same as service
restart).
cheers,
ck
** Affects: docker.io (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1950751
Title:
docker.io 20.10.x does not create sub-directories in /var/lib/docker
on start (but does on restart)
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