Re: SATA disc spindown
On Fri, 25 Nov 2011 13:19:28 +0000, Ramon Hofer wrote:
> On Fri, 25 Nov 2011 13:26:13 +0100, Lou wrote:
>
>> Hallo Ramon,
>
> Thanks for your reply Lou!
>
>
>> On Fri, 25 Nov 2011 11:49:42 +0000, Ramon Hofer wrote:
>>
>> >Therefore I uncommented the spindown_time line and set the value to
>> >241 which should spin down all the drives after 30 minutes.
>>
>> >To speed up testing I have set spindown_tim = 1 but the drives still
>> >stays active...
>>
>> >Can I check the access to the discs from a log? Or maybe I should
>> >create a sudo hdparm -C /dev/sd? log which checks the drive states
>> >every 15 minutes or so?
>>
>> Maybe it's just the hddtemp daemon with the temperature polls keeping
>> your data drive(s) awake? To find out more exactly I suggest you
>> monitor r/w access in syslog:
>
> I have setup hddtemp to do nothing automatically (set interval to 0 and
> don't start as daemon). So this shouldn't be the problem.
>
>
>> #this will put a comment about read/write access into your syslog: echo
>> 1 > /proc/sys/vm/block_dump
>>
>> #live monitoring syslog:
>> tail -f /var/log/syslog
>>
>> #switch off syslog r/w comments:
>> echo 1 > /proc/sys/vm/block_dump
When I turn logging on, I only get lots of messages from the system drive
and not from any other. So it should work?
> And do I have to restart the system or is it enough the do a
> /etc/init.d/ hdparm restart?
When I only have the spindown_time option in hdparm.conf and I do /etc/
init.d/hdparm restart then it tells me: "Setting parameters of disc:
(none)."
But when I add
/dev/sdc {
spindown_time = 1
}
I get "Setting parameters of disc: /dev/sdc."
The output from last reboot of grep sdc /var/log/syslog is
Nov 25 14:26:19 media-server kernel: [ 1.776301] sd 1:0:0:0: [sdc]
3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)
Nov 25 14:26:19 media-server kernel: [ 1.776400] sd 1:0:0:0: [sdc]
Write Protect is off
Nov 25 14:26:19 media-server kernel: [ 1.776402] sd 1:0:0:0: [sdc]
Mode Sense: 00 3a 00 00
Nov 25 14:26:19 media-server kernel: [ 1.776425] sd 1:0:0:0: [sdc]
Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Nov 25 14:26:19 media-server kernel: [ 1.776546] sdc:
Nov 25 14:26:19 media-server kernel: [ 2.178369] sdc1
Nov 25 14:26:19 media-server kernel: [ 2.200458] sd 1:0:0:0: [sdc]
Attached SCSI disk
The DPO and FUA things doesn't seem to have anything to do with that?
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