I tried to use configMap to mount some configs in a subdirectory. For example:

spec.template.spec.containers.[0].volumeMounts:
  - name: fh16-volume
    mountPath: /etc/fh-16/application.log
    subPath: my-config.txt
spec.template.spec.volumes:
  - name: fh16-volume
    configMap:
      name: my-config

At this scenario, all mount as expected. But after any changes in configMap, this changes not applied in a container. Need to recreate pod for this.

It looks like some bug, but maybe I make some mistake in my configurations? In the case when I don't use subPath directive, all works as expected.