On Wed, 11 Apr 2012, Craig Sanders wrote:
On Wed, Apr 11, 2012 at 09:36:43AM +1000, Aníbal Monsalve Salazar wrote:
[ Cc-ing madduck as he may be interested on Craig's comments above ]
btw, i had already disabled idle spindown with hdparm -S 0
idle3-tools just updates the firmware settings so that it's disabled by default (as should be the recommend setting for WD Green drives on any linux system)..
I had experimented with spindown over summer (didn't want my drives to overheat) but found that ZFS didn't like it. at all. kept getting drives being booted from the zpool seemingly at random,
Er. How do we fix this? I was very much planning to implement zfsonlinux on my miniature NAS. That I want to keep operating in summer with good reliability despite my non-climate-controlled house. Mdadm and DM don't care about how long it takes to spin up a disk. This Is How It Should Be.
so ended up disabling it. of much less importance, I also found that hddtemp woke the drives up anyway, whenever it queried the temperature.
I have never encountered that problem. I do recall reading output that said paraphrased. "disabled, spun down". Perhaps it's a setting in the hddtempd daemon. Hey, look at that: fs# hdparm -y /dev/sda /dev/sda: issuing standby command fs# hdparm -y /dev/sdd /dev/sdd: issuing standby command fs# hddtemp /dev/sdc /dev/sdc: WDC WD10EAVS-00D7B1: 29°C fs# hddtemp /dev/sdd /dev/sdd: WDC WD10EAVS-32D7B1: drive is sleeping fs# hddtemp /dev/sda /dev/sda: ST9160310AS: drive is sleeping -- Tim Connors