Update zfs-driver.md

Technical review complete by @andrewhsu.
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Anne Henmi 2018-12-04 12:57:04 -07:00 committed by GitHub
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@ -44,10 +44,8 @@ use unless you have substantial experience with ZFS on Linux.
and push existing images to Docker Hub or a private repository, so that you
do not need to re-create them later.
> ***NOTE:*** There is no need to use `MountFlags=slave` with Docker Engine 18.09 because `dockerd`
> and `containerd` end up in different mount namespaces, and `containerd` cannot see those mounts.
> This is resulting from Docker Engine no longer starting `containerd` as a service, but relying
> on `systemd` to start the `containerd` service.
> ***NOTE:*** There is no need to use `MountFlags=slave` with Docker Engine 18.09 or
> later because `dockerd` and `containerd` are in different mount namespaces.
## Configure Docker with the `zfs` storage driver