1) We'd suggest you to install following packages sys-block/parted to manage disk partions sys-fs/btrfs-progs to use btrfs filesytem sys-fs/cryptsetup to use encrypted devices with dm-crypt 2) To start several daemons of one specific type, create your own scripts cd /etc/init.d for dmn in mds.a mon.a osd.0 osd.1 osd.2; do ln -s ceph ceph-${dmn}; rc-update add ceph-${dmn} default; done 3) If you spread ceph daemons over several different machines, We'd highly recommend you to start ntp-client to keep the system time sync. Try to choose one of following ntp client to install and add into runlevel. net-misc/ntp net-misc/openntpd net-misc/chrony 4) Starting from version 9.0.x, Ceph daemons run as user 'ceph' instead of 'root'. In order to solve this, we recommand to stop ceph daemons, and fix the ownership # chown -R ceph:ceph /var/lib/ceph or Add the following line to ceph.conf on all hosts: " setuser match path = /var/lib/ceph/$type/$cluster-$id " https://ceph.com/releases/v9-2-0-infernalis-released/