> I strongly recommend to let cephadm handle the entire process of OSD creation, just ensure you have a fitting spec file. Don't prepare any LVs manually beforehand, except for such a case as right now where you want to move DBs out of the main device. So if I create a spec file so Ceph automatically puts the DBs of the rotational devices onto a specified SSD (whether I do it by size, vendor, model, or all three), Ceph will crate the necessary LVs on the SSD automatically? How does it determine the size to use (or would that also get specified in the spec file)? What if I have an SSD with he LVs already created? I assume Ceph wouldn't see that as a valid device for the DB/WAL? _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx