From the zfs man page: > ZFS will encrypt file and zvol data, file attributes, ACLs, permission bits, directory listings, FUID mappings, and userused / groupus

From the zfs man page: > ZFS will encrypt file and zvol data, file attributes, ACLs, permission bits, directory listings, FUID mappings, and userused / groupused data. I don't believe that the native encryption ever leaked file listings. That could have been something that the older/non-native techniques did.