Hi Misc, I am using
# bioctl sd4 Volume Status Size Device softraid0 0 Online 2000396018176 sd4 RAID1 0 Online 2000396018176 0:0.0 noencl <sd0a> 1 Online 2000396018176 0:1.0 noencl <sd1a> for my desktop # uname -a OpenBSD oko.bagdala2.net 6.2 GENERIC.MP#0 amd64 Physical drives used to create mirror on this machine are /dev/sd0 and /dev/sd1 When I try to probe the drives with S.M.A.R.T utility I get # smartctl -i -d sat /dev/sd0 smartctl 6.5 2016-05-07 r4318 [x86_64-unknown-openbsd6.2] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org Smartctl open device: /dev/sd0 [SAT] failed: Operation not supported by device and this is without device option # smartctl -i /dev/sd0 smartctl 6.5 2016-05-07 r4318 [x86_64-unknown-openbsd6.2] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org Smartctl open device: /dev/sd0 failed: Operation not supported by device It makes me wonder if S.M.A.R.T. support for physical disks is added to bioctl since 2006/7 when Marco Peereboom was talking about that on NYC*BUG. I am using high end enterprise drives on this machine which do support S.M.A.R.T. and I did enable S.M.A.R.T. in bios. Cheers, Predrag