Re: frequent disk activity with mdadm-3.3

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On 18.09.2014, at 13:09, NeilBrown <neilb@xxxxxxx> wrote:

> Thanks.  There is nothing there which point to the device being spun down.
> I tried spinning down disks on a couple of machines and no udev events were
> created.  So I'm a bit suspicious that there is something I'm missing.
> 
> How exactly do you spin down the devices?
> I use "hdparm -Y /dev/sda" or "hdparm -S 1 /dev/sda".

I’m using spindown (https://code.google.com/p/spindown) which in turn uses sg3-utils (http://sg.danny.cz/sg/sg3_utils.html), issuing "sg_start —stop DEVICE"
I can confirm there’s no change events with hdparm -Y here either. but with sg_start —stop there are.

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