[23.0 backport] Work around missing rename support when the backing filesystem is overlayfs

[thaJeztah]

• backport of Work around missing rename support when the backing filesystem is overlayfs #43225

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Intro

Raspberry Pi allows to start system under overlayfs.

Docker is successfully fallbacks to fuse-overlay but not starting
because of the Error starting daemon: rename /var/lib/docker/runtimes /var/lib/docker/runtimes-old: invalid cross-device link error.
It's happening because rename is not supported by overlayfs.
After manually removing directory runtimes docker starts and works successfully.

relates to #25409 (comment)
docker in this case is userspace

- What I did
Remove runtimes directory in case renaming failed.

- How I did it
On os.rename error try to remove runtimes directory .

- How to verify it
Run a docker under the overlayfs as backing FS.

1. Add RUN mkdir -p "/docker/runtimes" right after FROM dev-systemd-${SYSTEMD} AS dev in Dockerfile
2. Run make BIND_DIR=. shell
3. Execute wget -O /usr/local/bin/fuse-overlayfs https://github.com/containers/fuse-overlayfs/releases/download/v1.8.2/fuse-overlayfs-x86_64
4. Execute chmod +x /usr/local/bin/fuse-overlayfs
5. Execute hack/make.sh binary install-binary
6. Execute dockerd --data-root /docker

Without the fix docker is failing with failed to start daemon: rename /docker/runtimes /docker/runtimes-old: invalid cross-device link with the fix dockerd starts fine.

- Description for the changelog
Remove runtimes directory on startup in case renaming to runtimes-old failed

- A picture of a cute animal (not mandatory but encouraged)

closes docker/for-linux#230

[thaJeztah]

Thx! Let me bring this one in

[AlexanderZvyagin]

The fix is incomplete. I use standard ubuntu-22.10, but my / and /home are different mounts (both are ext4). I saw this error:
installation could not be completed due to: rename /tmp/340006179-ext-install/drone_drone-ci-docker-extension /home/zvyagin/.docker/desktop/extensions/drone_drone-ci-docker-extension: invalid cross-device link
Manage install drone-extension with the following workaround:

• create extensions folder in the root fs /
• set symbolik link to /home/....
• install extension

[neersighted]

Your issue is unrelated to what is being addressed here, and Docker Desktop does not yet include this code. Renaming from /tmp to anywhere else is definitely not something that should be attempted as /tmp can often be a different filesystem, but this deserves a new issue (and may be part of Desktop as that is where all the extension code lives) anyway.

[thaJeztah]

@WarShoe I think your issue is what's reported in this ticket;

• Linux: Installation of extension fails with error docker/volumes-backup-extension#104

A fix for that should be included in the upcoming Docker Desktop 4.18

(but perhaps @felipecruz91 or @benja-M-1 can confirm)

[felipecruz91]

@thaJeztah Yes, that's correct - we'll be releasing a fix in Docker Desktop 4.18.