Grepping for "zil" in sysctls doesn't give anything useful: # sysctl -a | grep zil vfs.zfs.zil_replay_disable: 0 (its description is "Disable intent logging replay" so it looks like a crash recovery option) ... so is there a way to find out if ZIL is enabled? I can look at kenv but for some reason I can't trust its value right now.