[ceph-users] krbd cache quesitions

Dear ceph folks, rbd_cache can be set up as a read /write cache for librbd, widely used with openstack cinder. Does krbd has a silmilar cache controll mechanism or not? I am using krbd for iSCSI and NFS backend storage, and wonder whether a cache setting exists for krbd. thanks in advance, Samuel huxiaoyu(a)horebdata.cn