[ceph-users] Mounting CephFS on Ceph nodes themselves

Dear fellow Cephies, A few weeks ago I came across in Tentacle documentation on docs.ceph.org (and OF COURSE now that I'm trying to quote it, I cannot find it any more) a mention that CephFS should not be mounted on systems serving Ceph because of there being a risk of harmful interference in the kernel. The context suggested this pertained to one-node Ceph clusters, that said I do not believe that was explicitly stated. Therefore, I very much hope someone will be able to enlighten me whether: * this is indeed still the case with Tentacle, * it applies to one-node clusters only or all Ceph clusters, * it only applies to CephFS mounts using the kernel driver, or ceph-fuse as well. Thank you in advance! -- MS