[LE10] Docker Add-on using wrong arch on RK3399 AArch64

Aciel · October 31, 2021 at 7:45 AM

Hello,

I'm using Docker on LE since version 18 on NanoPC-T4 (RK3399) where LE OS is running ARM64, but why is the Docker Add-on installed is using the ARM arch?

It pulls ARMv7 images, which caused errors with many containers that should be running on ARM64.

Code

NanoPC-T4:~ # uname -a
Linux NanoPC-T4 5.10.47 #1 SMP Tue Aug 10 16:48:07 CEST 2021 aarch64 GNU/Linux
NanoPC-T4:~ # docker info
Client:
 Debug Mode: false

Server:
 Containers: 20
  Running: 17
  Paused: 0
  Stopped: 3
 Images: 21
 Server Version: 19.03.15
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
 Logging Driver: journald
 Cgroup Driver: systemd
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 8fba4e9a7d01810a393d5d25a3621dc101981175
 runc version: 12644e614e25b05da6fd08a38ffa0cfe1903fdec
 init version:
 Kernel Version: 5.10.47
 Operating System: LibreELEC (official): 10.0.0
 OSType: linux
 Architecture: aarch64
 CPUs: 6
 Total Memory: 3.778GiB
 Name: NanoPC-T4
 ID: DTLH:RKKR:V54S:BNJK:LPAG:6KVA:5TVY:5VNT:GI5Q:HD54:R7VM:7CRD
 Docker Root Dir: /var/media/Docker/root
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: No cpu cfs quota support
WARNING: No cpu cfs period support
NanoPC-T4:~ # docker version
Client:
 Version:           19.03.15
 API version:       1.40
 Go version:        go1.14.15
 Git commit:        99e3ed89195c4e551e87aad1e7453b65456b03ad
 Built:             Thu Jul 15 16:45:05 UTC 2021
 OS/Arch:           linux/arm
 Experimental:      false

Server:
 Engine:
  Version:          19.03.15
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.14.15
  Git commit:       99e3ed89195c4e551e87aad1e7453b65456b03ad
  Built:            Thu Jul 15 16:45:05 UTC 2021
  OS/Arch:          linux/arm
  Experimental:     false
 containerd:
  Version:          1.3.9
  GitCommit:        8fba4e9a7d01810a393d5d25a3621dc101981175
 runc:
  Version:          1.0.0-rc93
  GitCommit:        12644e614e25b05da6fd08a38ffa0cfe1903fdec
 docker-init:
  Version:          0.19.0
  GitCommit:

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Running docker -version is showing linux/arm, where it should linux/arm64. How can this be fixed?

Regards~

**heitbaum** · October 31, 2021 at 8:49 PM

Hi Aciel whilst the kernel for LE ARM8 CPU’s is aarch64 - thus the kernel is 64bit, the userland has been maintained as 32bit. There is a dependency on the vendor provided widevine library (one of the reasons why userland is maintained at 32bit)

The docker Addons is userland thus 32bit

https://wiki.libreelec.tv/development-1/build-commands/build-commands-le10

https://wiki.libreelec.tv/development-1/build-commands/build-addons

Code

PROJECT=Rockchip ARCH=arm DEVICE=RK3399 make image

the =arm in the above build specifies that userland is compiled as 32bit. (Same for addons) whilst this can be changed for your use case, you would need to maintain the image and addons by self-compiling as the LE servers do not maintain a 64bit ARM8 addon repository.

Hope this helps