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From: tapp on 25 Mar 2010 15:47
After upgrading an old system to 13.0, the drives that should sleep most
of the day suddenly stayed "active/idle" all the time; "hdparm -y|-Y" was
useless. Found out it's udev. The simple fix was:

cp /lib/udev/rules.d/60-persistent-storage.rules /etc/udev/rules.d/

Edit 1 line near the end in /etc/udev/rules.d/60-persistent-storage.rules
KERNEL!="sr*", OPTIONS+="watch"

and add the drives which are permanent, in my case:
KERNEL!="sr*|sda|sdb|sdc", OPTIONS+="watch"

Restart udev and it's done. (Note: adding "sd*" most probably breaks hot-
plugging of other drives, so I added only explicit devices.)

If this was redundant, boring or unnecessary, please ignore. ;-)

--
Arnd
From: Mike Jones on 25 Mar 2010 16:53
Responding to tapp:

> After upgrading an old system to 13.0, the drives that should sleep most
> of the day suddenly stayed "active/idle" all the time; "hdparm -y|-Y"
> was useless. Found out it's udev. The simple fix was:
>
> cp /lib/udev/rules.d/60-persistent-storage.rules /etc/udev/rules.d/
>
> Edit 1 line near the end in
> /etc/udev/rules.d/60-persistent-storage.rules KERNEL!="sr*",
> OPTIONS+="watch"
>
> and add the drives which are permanent, in my case:
> KERNEL!="sr*|sda|sdb|sdc", OPTIONS+="watch"
>
> Restart udev and it's done. (Note: adding "sd*" most probably breaks
> hot- plugging of other drives, so I added only explicit devices.)
>
> If this was redundant, boring or unnecessary, please ignore. ;-)


Saved for later reference. Ta.


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From: CSM 'illovae' Seldon on 26 Mar 2010 03:07
Mike Jones <luck(a)dasteem.invalid> writes:

> Responding to tapp:
>
>> After upgrading an old system to 13.0, the drives that should sleep most
>> of the day suddenly stayed "active/idle" all the time; "hdparm -y|-Y"
>> was useless. Found out it's udev. The simple fix was:
>>
>> cp /lib/udev/rules.d/60-persistent-storage.rules /etc/udev/rules.d/
>>
>> Edit 1 line near the end in
>> /etc/udev/rules.d/60-persistent-storage.rules KERNEL!="sr*",
>> OPTIONS+="watch"
>>
>> and add the drives which are permanent, in my case:
>> KERNEL!="sr*|sda|sdb|sdc", OPTIONS+="watch"
>>
>> Restart udev and it's done. (Note: adding "sd*" most probably breaks
>> hot- plugging of other drives, so I added only explicit devices.)
>>
>> If this was redundant, boring or unnecessary, please ignore. ;-)
>
>
> Saved for later reference. Ta.

Yeah, thanks very much, usefull tip :)

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