Mirroring LFS objects

I've been experimenting with mirroring from CE to EE and noticed that LFS objects did not mirror between the two GitLab instances. This makes mirroring partially useless, because if server A is gone or is simply unavailable at some network, the repo can no longer be pulled in full from a mirror on server B. It would be nice if the mirroring repo synced LFS objects into its own storage. If this is not supported by design, IMHO there should be quite a loud warning sign on top of the mirror saying that the repo contains stuff that depends on the availability of the orig. external LFS storage.

A similar process would be expected for mirroring with push behaviour. I.e. a EE instance that mirrors a repo to some other CE/EE-hosted repo should sync LFS objects at each push to the remote storage.

I believe that this issue is somewhat related to gitlab-org/gitlab-ce#19177, but they are not quite the same.