Ceph

http://ceph.com/docs/master/cephfs/fstab/ states "the Ceph file system will mount automatically on startup". However, the "noauto" flag in the example makes it so that the filesystem in fact does NOT mount on startup. While we're mucking about in there, per http://lxr.free-electrons.com/source/fs/inode.c#L1539, nodiratime is a proper subset of atime, so it can (and should) be dropped from the example, as well. Whether "rw" (which is the default on every system of which I'm aware), "noexec", and "nodev" also belong there is left as an exercise in judgement.