Hi Boris, general settings (unless they are set to zero) override disk-specific settings . I.e. bluestore_cache_size overrides both bluestore_cache_size_hdd and bluestore_cache_size_ssd. Here is the code snippet in case you know C++   if (cct->_conf->bluestore_cache_size) {     cache_size = cct->_conf->bluestore_cache_size;   } else {     // choose global cache size based on backend type     if (_use_rotational_settings()) {       cache_size = cct->_conf->bluestore_cache_size_hdd;     } else {       cache_size = cct->_conf->bluestore_cache_size_ssd;     }   } Thanks, Igor On 2/4/2020 2:14 PM, Boris Epstein wrote: > Hello list, > > As stated in this document: > > https://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/ > > there are multiple parameters defining cache limits for BlueStore. You have > bluestore_cache_size (presumably controlling the cache size), > bluestore_cache_size_hdd (presumably doing the same for HDD storage only) > and bluestore_cache_size_ssd (presumably being the equivalent for SSD). My > question is, does bluestore_cache_size override the disk-specific > parameters, or do I need to set the disk-specific (or, rather, storage type > specific ones separately if I want to keep them to a certain value. > > Thanks in advance. > > Boris. > _______________________________________________ > ceph-users mailing list -- ceph-users(a)ceph.io > To unsubscribe send an email to ceph-users-leave(a)ceph.io