Does Loki docker driver respect max-file and max-size from json-driver?

[vitalets]

I have a docker daemon with the default json logging config:

{
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "10m",
    "max-file": "3"
  }
}

Then I run a container that sends logs to Loki :

docker run --log-driver=loki --log-opt loki-url="..." my-container

I don't specify max-file and max-size options.
What will be actual values of max-file and max-size?
Will Loki use it's defaults (max-file=1, max-size=-1 per docs) or it will borrow these options from json log driver?

It would be great to clarify in docs.
Thanks!

[cyriltovena]

It will use the default.

[vitalets]

Thanks, @cyriltovena !

How about such addition in docs?

Note: The Loki logging driver still uses the json-log driver in combination with sending logs to Loki, this is mainly useful to keep the docker logs command working.
You can adjust file size and rotation using the respective log option max-size and max-file. Keep in mind that default values for these options are not taken from json-log configuration.
You can deactivate this behavior by setting the log option no-file to true.

[cyriltovena]

Sounds good !