[mythtv-users] Using HDParm to Spindown Hard Drives

Brad DerManouelian myth at dermanouelian.com
Wed Sep 10 14:04:06 UTC 2008


On Sep 10, 2008, at 6:51 AM, Greg Woods wrote:

> On Tue, 2008-09-09 at 15:12 -0700, Scott Kidder wrote:
>
>> [root at mythtv mythtv]# fgrep "IOBOUND" mythbackend.log*
>> 2008-09-09 15:00:18.393 TFW, Error: Write() -- IOBOUND begin  
>> cnt(9400)
>> free(4535)
>> 2008-09-09 15:00:22.325 TFW, Error: Write() -- IOBOUND end
>> 2008-09-09 15:00:22.341 TFW, Error: Write() -- IOBOUND begin  
>> cnt(9400)
>> free(8959)
>> 2008-09-09 15:00:22.347 TFW, Error: Write() -- IOBOUND end
>
> I get these too. One thing I have also noticed is that just before  
> every
> half hour, something happens that causes one of the drives to spin up.
> This is very noticeable because whatever I am watching freezes for a  
> few
> seconds, while the disk activity light is hard on (normal for when a
> drive spins up, as opposed to flickering like it would for heavy disk
> activity). I haven't been able to find anything obvious that would be
> causing this (i.e. cron jobs). Is there something that mythbackend  
> does
> every half hour?

EIT scanning?



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