Our Ceph packages don't have redundant logrotate scripts The ones in Debian and the ones provided by the Ceph project (which ours are based on) use different Debian packaging - one has the logrotate in ceph-common, the other in ceph-base, and neither cares about the others' quirks. Since our pve-qemu-kvm package depends on ceph-common, you initially get the ceph-common package from Debian Stretch installed. When you then install the Ceph packages from our repository (e.g., via "pveceph install"), the old logrotate script is not cleaned up because it is a conffile. We'll include some kind of cleanup in our next Luminous packages (based on 12.0.3).
@fabian, will there be support for Bluestore in Ceph Luminous in Proxmox v5.0? Really looking forward for this feature as it could improve the HDD performance up to 2x than the XFS filesystem.
Would also love to see pveceph createmds to add MDS for CephFS.