I did do, myself, anything to the crush. systemctl stop ceph-9f4f9dba-72c7-11f0-8052-525400519d29@osd.0.service && lvresize -l 100%vg /dev/ceph-cae223cb-c326-4560-b411-120bf5396fbb/osd-block-6efed8b4-6f4f-4f3f-8a1d-432f5ce38a52 && ceph-bluestore-tool bluefs-bdev-expand --path /var/lib/ceph/9f4f9dba-72c7-11f0-8052-525400519d29/osd.0/ ; ceph-bluestore-tool bluefs-bdev-sizes --path /var/lib/ceph/9f4f9dba-72c7-11f0-8052-525400519d29/osd.0/ && systemctl start ceph-9f4f9dba-72c7-11f0-8052-525400519d29@osd.0.service Without stopping - at least on my _cephadm_ deployed cluster - the container, resizing with _ceph-bluestore-tool_ is not possible, also, I did that with all disk-devices, all OSDs.