On the first MicroCeph video it’s mentioned object storage as missing, but not cephfs. Both videos don’t use cephfs. On the documentation I found mention of it being usable. But how? Couldn’t find any documentation or video on it.
MicroCeph does come with all the services needed for CephFS.
You’ll need to use microceph.ceph fs to create a filesystem and then add that as a separate pool in LXD.
We do have planned work this cycle to have this happen automatically in MicroCloud.