smartctl, standby mode not detected properly on FreeBSD

[drsweety]

Hi!

I've enabled the standby timer on all my harddisks with "camcontrol standby adaX -t 900" (=which sends the STANDBY ATA cmd to the drive (=idle now, arm standby timer to 900s)). This works fine and "smartctl" recognises that the drive is in standby mode:

# smartctl -A -n standby /dev/ada3
smartctl 5.39.1 2010-01-28 r3054 [FreeBSD 8.1-RELEASE amd64] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

Device is in STANDBY mode, exit(2)
# camcontrol cmd ada3 -a "E5 00 00 00 00 00 00 00 00 00 00 00" -r -
50 00 00 00 00 40 00 00 00 00 00

However, if a drive is currently active it still thinks that the drive is in standby mode even though it clearly is not:

# dd if=/dev/ada0 of=/dev/null count=1
1+0 records in
1+0 records out
512 bytes transferred in 0.034235 secs (14955 bytes/sec)
# ./smartctl -A -n standby /dev/ada0
smartctl 5.39.1 2010-01-28 r3054 [FreeBSD 8.1-RELEASE amd64] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

Power mode: 00
Device is in STANDBY mode, exit(2)
# camcontrol cmd ada0 -a "E5 00 00 00 00 00 00 00 00 00 00 00" -r -
50 00 00 00 00 00 00 00 00 FF 00
#

Note that the "Power mode: 00" output was added by me to atacmds.cpp for debugging purposes. It outputs the value of "result" from within "ataCheckPowerMode". As you can see from the "camcontrol" output the device is active (sector count=FF). I'm not sure why the output for sector count from "camcontrol" and "smartctl" differ... Is this working as designed?

[Christian Franke]

The sector_count value may not be passed by os_freebsd.cpp to atacmds.cpp.

Please provide output of: smartctl -r ioctl -n standby /dev/ada3

[bdheller]

I ran into the same problem. To get things going on a fix, here is the requested output:

smartctl -r ioctl -n standby /dev/ada10
smartctl 5.39.1 2010-01-28 r3054 [FreeBSD 8.1-RELEASE amd64] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net


REPORT-IOCTL: Device=/dev/ada10 Command=CHECK POWER MODE
 Input:   FR=...., SC=...., LL=...., LM=...., LH=...., DEV=...., CMD=0xe5
 Output: ERR=...., SC=0x00, LL=...., LM=...., LH=...., DEV=...., STS=....
REPORT-IOCTL: Device=/dev/ada10 Command=CHECK POWER MODE returned 0
Device is in STANDBY mode, exit(2)

camcontrol cmd ada10 -a "E5 00 00 00 00 00 00 00 00 00 00 00" -r -
50 00 00 00 00 00 00 00 00 FF 00

[bdheller]

I have attached a patch against 5.39.1 that works for me.

[Dan Lukes]

Tested on FreeBSD 8.1-R i386 and FreeBSD 8.1-R amd64

committed slightly different patch than the one attached by bdheller, but difference is in formatting only