Green hard disk drives

[Michael Loftis]

Smartd documents -n by itself as no-fork (normal for systemd/upstarted
stuff) but you also need to configure nocheck which....confusingly is
documented as -n <POWERMODE> -- man smartd for more on possible
<POWERMODE> values.....I do not know if the manual is inaccurate as I
have NOT checked, just RTFMed.  There's also a configuration option
for how many checks it can miss before waking a drive.

I'm not sure that the default should be to add powermode stuff.  You
might be able to add it even with a dpkg-reconfigure, I've literally
done no further investigation as to the option, setting it etc.

On Mon, Aug 24, 2015 at 6:30 AM, Ralf Mardorf
<ralf.mardorf at alice-dsl.net> wrote:
> Update:
>
> 1.
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1484497/comments/6
>
> 2.
>
> Running ps aux I found  /usr/sbin/smartd -n.
>
> [weremouse at moonstudio ~]$ man smartd
>   [snip] smartd  will  attempt  to enable SMART monitoring on ATA
>   devices (equivalent to smartctl -s on) and polls these and SCSI
>   devices every 30 minutes (configurable) [snip]
>
> My Arch Linux doesn't run smartd. I don't remember if it already was
> installed when the issue appeared for the Wily install or if I installed
> it after I noticed the issue. It might not be the original culprit, but
> seemingly is at least one culprit.
>
> I started a test a few minutes ago.
>
> Regards,
> Ralf
>
>
> Further information:
>
> [root at moonstudio weremouse]# ps aux | grep smart
> root       879  0.2  0.0  25240  2760 ?        Ss   14:55   0:00 /usr/sbin/smartd -n
> [snip]
>
>
> [root at moonstudio weremouse]# systemctl -l status smartmontools.service
> ● smartd.service - Self Monitoring and Reporting Technology (SMART) Daemon
>    Loaded: loaded (/lib/systemd/system/smartd.service; enabled; vendor preset: enabled)
>    Active: active (running) since Mon 2015-08-24 14:55:29 CEST; 47s ago
>      Docs: man:smartd(8)
>            man:smartd.conf(5)
>  Main PID: 879 (smartd)
>    CGroup: /system.slice/smartd.service
>            └─879 /usr/sbin/smartd -n
> [snip]
> Aug 24 14:55:32 moonstudio smartd[879]: Device: /dev/sda [SAT], state written to /var/lib/smartmontools/smartd.SAMSUNG_HD321KJ-S0MQJ9AQ308387.ata.state
> Aug 24 14:55:32 moonstudio smartd[879]: Device: /dev/sdb [SAT], state written to /var/lib/smartmontools/smartd.SAMSUNG_HD502HJ-S26EJ9FZ100925.ata.state
> Aug 24 14:55:32 moonstudio smartd[879]: Device: /dev/sdc [SAT], state written to /var/lib/smartmontools/smartd.WDC_WD20EZRX_00DC0B0-WD_WMC300753067.ata.state
>
>
> [root at moonstudio weremouse]# systemctl -l status smartd.service
> ● smartd.service - Self Monitoring and Reporting Technology (SMART) Daemon
>    Loaded: loaded (/lib/systemd/system/smartd.service; enabled; vendor preset: enabled)
>    Active: active (running) since Mon 2015-08-24 14:55:29 CEST; 58s ago
>      Docs: man:smartd(8)
>            man:smartd.conf(5)
>  Main PID: 879 (smartd)
>    CGroup: /system.slice/smartd.service
>            └─879 /usr/sbin/smartd -n
> [snip]
> Aug 24 14:55:32 moonstudio smartd[879]: Device: /dev/sda [SAT], state written to /var/lib/smartmontools/smartd.SAMSUNG_HD321KJ-S0MQJ9AQ308387.ata.state
> Aug 24 14:55:32 moonstudio smartd[879]: Device: /dev/sdb [SAT], state written to /var/lib/smartmontools/smartd.SAMSUNG_HD502HJ-S26EJ9FZ100925.ata.state
> Aug 24 14:55:32 moonstudio smartd[879]: Device: /dev/sdc [SAT], state written to /var/lib/smartmontools/smartd.WDC_WD20EZRX_00DC0B0-WD_WMC300753067.ata.state
>
>
> [root at moonstudio weremouse]# systemctl stop smartmontools.service
> [root at moonstudio weremouse]# systemctl stop smartd.service
> [root at moonstudio weremouse]# systemctl disable smartmontools.service
> Synchronizing state of smartmontools.service with SysV init with /lib/systemd/systemd-sysv-install...
> Executing /lib/systemd/systemd-sysv-install disable smartmontools
> insserv: warning: current start runlevel(s) (empty) of script `smartmontools' overrides LSB defaults (2 3 4 5).
> insserv: warning: current stop runlevel(s) (1 2 3 4 5) of script `smartmontools' overrides LSB defaults (1).
>
>
> [root at moonstudio weremouse]# systemctl disable smartd.service
> Removed symlink /etc/systemd/system/multi-user.target.wants/smartd.service.
>
>
> [root at moonstudio weremouse]# ps aux | grep smart
> root      1314  0.0  0.0   8208   936 pts/0    S+   14:58   0:00 grep --color=auto smart
>
>
> The test that is running:
>
> [root at moonstudio weremouse]# echo;date;t=10800;y=$(smartctl -A /dev/sdc|grep Lo|awk '{print $NF}');sleep $t;x=$(smartctl -A /dev/sdc|grep Lo|awk '{print $NF}');printf "\n$(uname -rm)$(lsb_release -d|cut -f2 -d:|cut -f1 -d"(")\n$x-$y=$((x-y)) spins in $(($t/60/60)) hours\n\n";date
>
> Mon Aug 24 15:00:50 CEST 2015
>
> To be continued...
>
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