On 11/12/2016 09:14 PM, Rainer Dorsch wrote:
> Hi Alex,
>
> thank you for your reply and your testing.
>
> On Saturday 12 November 2016 16:40:40 Alex Mestiashvili wrote:
>> On 11/12/2016 08:37 AM, Rainer Dorsch wrote:
>>> + Alexandre, hdparm maintainer
>>>
>>> On Friday 11 November 2016 23:11:24 Rainer Dorsch wrote:
>>>> Hi,
>>>>
>>>> I configure sdb in /etc/hdparm.conf to apm=64, but when I start the
>>>> system, apm does not change. Interesting enough a /etc/init.d/hdparm
>>>> restart fixes the problem:
>>>>
>>>>
>>>> root@Silberkiste:~# cat /etc/hdparm.conf
>> <skip>
>>>> /dev/sdb {
>>>> apm = 64
>>>> spindown_time = 5
>>>> }
>>>>
>>>> root@Silberkiste:~# hdparm -I /dev/sdb|grep level
>>>> Advanced power management level: 254
>>>> root@Silberkiste:~# /etc/init.d/hdparm restart
>>>> [ ok ] Restarting hdparm (via systemctl): hdparm.service.
>>>> root@Silberkiste:~# hdparm -I /dev/sdb|grep level
>>>> Advanced power management level: 64
>>>> root@Silberkiste:~#
>>>>
>>>>
>>>> Any insight, why I need the /etc/init.d/hdparm restart is very welcome.
>>>>
>>>> Thanks
>>>> Rainer
>>>>
>>>>
>> Hi Rainer,
>> I can not reproduce this problem on my machine:
>>
>> lsb_release -c
>> Codename: jessie
>>
>> hdparm -V
>> hdparm v9.43
>>
>> egrep -v "^$|^#" /etc/hdparm.conf
>> /dev/sdc {
>> apm = 64
>> acoustic_management = 250
>> }
>> /dev/sdd {
>> apm = 128
>> }
>> /dev/sdf {
>> apm = 48
>> }
>>
>>
>> for disk in sdc sdd sdf; do echo $disk; hdparm -I /dev/$disk | egrep
>> "level:|acoustic"; done
>> sdc
>> Advanced power management level: 64
>> Recommended acoustic management value: 254, current value: 250
>> sdd
>> Advanced power management level: disabled
>> Recommended acoustic management value: 128, current value: 128
>> sdf
>> Advanced power management level: 48
>> Recommended acoustic management value: 208, current value: 0
>>
>> The values are set after reboot or after init script restart.
>>
>
> Hmm...since hdparm works for me if I do a
>
> # /etc/init.d/hdparm restart
>
> after boot (or even in /etc/rc.local, is it possible that hdparm runs for my
> system for whatever reason too early (though it is not special setup, all
> SATA SSDs and HDDs)?
>
> Rainer
>
>
Hi Rainer,
you can try to tweak the init script to see what is really happening,
for example by echoing more information or redirecting the command
outputs to a logfile.
Alternatively you can give hdparm link a higher Start number in
/etc/rc3.d/ to see if it helps.
Best,
Alex
