Re: Using SMARTd to monitor drives

Ray Andrews wrote:
> ...
> BTW, just now I wondering what the relationship is between
>
>
> # default is every 30 minutes:
> #smartd_opts=3D"--interval=3D1800"
>
> in '/etc/default/smartmontools'
>
> and the '-i' switch used in '/etc/smartd.conf'.  The latter seems to
> have a different unit but in 'man smartd.conf' the switch is mentioned
> only in the text, it does not have a section devoted to it.  It seems
> legal to use but I'm not sure what's going on there and the value can't
> be above 255, it seems.

Besides the fact that '-i' is explained on smartd.conf man page, I =

already explained the effects of both '-i' in my first answer from =

2017-01-19. Please read & understand previous answers before asking same =

question again.


> I've tried '-n standby' but it seems to be ignored, all my disks spin up
> after '$ smartd -q onecheck' even if I had just spun them down:
>
> $ hdparm -S60y /dev/sda; hdparm -S60y /dev/sdb; hdparm -S60y /dev/sdc
>
> /dev/sda:
>    setting standby to 60 (5 minutes)
>    issuing standby command
>
> /dev/sdb:
>    setting standby to 60 (5 minutes)
>    issuing standby command
>
> /dev/sdc:
>    setting standby to 60 (5 minutes)
>    issuing standby command

BTW, you could also do this with 'smartctl -s standby,N ...'


> $ smartd -q onecheck
> ...
>
> $ hdparm -C /dev/sda; hdparm -C /dev/sdb; hdparm -C /dev/sdc
>
> /dev/sda:
>    drive state is:  active/idle

This is as expected. The initial drive registration (SMART enable, =

capability checks) is always done by smartd. This may or may not spin up =

drives, depending on drive firmware.

Quote from smartd.conf man page
"This =B4nocheck=B4 Directive is used to prevent a disk from being spun-up =

when it is *periodically polled* by smartd."


Regards,
Christian


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