Is it possible to change /dev/shm size for containers?

[sfc-gh-aivanou]

I am using k8s with containerd and runc and was wondering whether it is possible to change the shm size?

shm mount point is defined in ctr oci spec, that has size option, but no matter what size I put, containers always have /dev/shm with only 64Mb .

I tried to change size of /dev/shm in the ctr spec:

    {
      "destination": "/dev/shm",
      "type": "tmpfs",
      "source": "shm",
      "options": [
        "size=3097152k"
      ]
    },

But it does not seem to have any effect. Is it because the shm size is hardcoded to 64mb here: https://github.com/containerd/containerd/blob/main/pkg/cri/server/sandbox_run_linux.go#L301 ? And shm oci spec configuration is not really used?