smartctl -n standby wakes up drive

[ChrisS]

Binary package hint: smartmontools

In 9.04, drives stayed in standby... after upgrading to 9.10 they don't stay in standby. I think the root cause is smartctl waking up the drives even when instructed not to.

Demonstration:
chriss@bobo:~$ sudo hdparm -y /dev/sdb

/dev/sdb:
 issuing standby command
chriss@bobo:~$ sudo hdparm -C /dev/sdb

/dev/sdb:
 drive state is: standby
chriss@bobo:~$ sudo smartctl -n standby -a /dev/sdb | grep Load_Cycle_Count
chriss@bobo:~$ sudo hdparm -C /dev/sdb

/dev/sdb:
 drive state is: active/idle
chriss@bobo:~$ sudo smartctl -n standby -a /dev/sdb | grep Load_Cycle_Count
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 646
chriss@bobo:~$

[ChrisS (yseeley)]

I tried compiling the smartctl from smartmontools 5.39... same effect. The drive woke up after exiting smartctl.

chriss@bobo:~/tmp/smartmontools-5.39$ sudo hdparm -y /dev/sdb

/dev/sdb:
 issuing standby command
chriss@bobo:~/tmp/smartmontools-5.39$ sudo hdparm -C /dev/sdb

/dev/sdb:
 drive state is: standby
chriss@bobo:~/tmp/smartmontools-5.39$ sudo hdparm -C /dev/sdb

/dev/sdb:
 drive state is: standby
chriss@bobo:~/tmp/smartmontools-5.39$ sudo ./smartctl -n standby -a /dev/sdb
smartctl 5.39 2009-12-09 r2995 [x86_64-unknown-linux-gnu] (local build)
Copyright (C) 2002-9 by Bruce Allen, http://smartmontools.sourceforge.net

Device is in STANDBY mode, exit(2)
chriss@bobo:~/tmp/smartmontools-5.39$ sudo hdparm -C /dev/sdb

/dev/sdb:
 drive state is: active/idle
chriss@bobo:~/tmp/smartmontools-5.39$

[Christian Franke (christian-franke)]

Fixed in upstream smartmontools 5.39.1
http://sourceforge.net/apps/trac/smartmontools/ticket/37

[Christian Franke (christian-franke)]

The upstream fix is included in 10.10 (smartmontools-5.39.1+svn3077-1ubuntu1). Please close this bug.

[Dave Gilbert (ubuntu-treblig)]

As per comment #3 closing as fix-released; also tested it on Quantal - seems to work correctly as per your test.