read_meminfo failed - unable to read ...pages_sharing"

[caraar12345]

Hey there! I've been using PBS through Docker for a while now with no issues, but today I can't get it to start.

It's repeatedly spitting out the below to the logs but not booting up.

read_meminfo failed - unable to read "/sys/kernel/mm/ksm/pages_sharing" - No such file or directory (os error 2)

Any idea as to what may be causing this?

I'm running the latest debug version (although it was showing up on :latest too) on a Pi 4 with Debian Buster.

[ayufan]

Interesting. Can you try one of the older versions? And don't use one with .debug :)

I'm sure that v2.0.7 works: https://hub.docker.com/r/ayufan/proxmox-backup-server/tags?page=1&ordering=last_updated

[sysrq-reisub]

It starts for me, that error appears only into PBS when I try to view some graphs

[dorianim]

I have the same issue:

Running on a raspberry pi 3b+ on 64bit raspberrypi os.

[dorianim]

Is it possible, that this is related to RaspberrypiOS not supporting KMS?

[dorianim]

This may be helpful: https://github.com/wofferl/proxmox-backup-arm64/pull/5

[ayufan]

Since this is docker container. Just bind-mount empty file, this should silence this warning very well.

volumes:
  - /dev/null:/sys/kernel/mm/ksm/pages_sharing:ro

[dorianim]

Unfortunately, the docker container does not start with that setting added:

[dorianim]

The error also appears on the dashboard:

[dorianim]

Would it be possible to apply the patch from https://github.com/wofferl/proxmox-backup-arm64/pull/5 ? That would solve the problem in a clean way in my opinion :)

[ayufan]

Will do in next round :)

On Wed, 9 Feb 2022 at 21:51, Dorian Zedler @.***> wrote:

Would it be possible to apply the patch from wofferl/proxmox-backup-arm64#5 https://github.com/wofferl/proxmox-backup-arm64/pull/5 ? That would solve the problem in a clean way in my opinion :)

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[ayufan]

@dorianim

For time being this should do the trick:

    volumes:
      ...
      - /tmp/pbs-mm:/sys/kernel/mm
    command:
      /bin/bash -c 'mkdir -p /sys/kernel/mm/ksm; echo 0 > /sys/kernel/mm/ksm/pages_sharing; exec runsvdir /runit'

[dorianim]

Yes, that worked, thank you!

Also, thanks a lot for wrapping this up! It is the perfect solution and exactly what I was looking for for a long time :+1:

[ayufan]

@dorianim @caraar12345 You might check v2.1.5 with a fix: https://hub.docker.com/r/ayufan/proxmox-backup-server.

[dorianim]

Works for me! :smile: