Re: Hard drive to sleep

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>
> On Wed, Oct 10, 2018 at 03:27:56PM +0200, Patrick Dupre wrote:
> >Hello,
> >
> >I made some tests, but it is strange to me.
> >dparm -Y /dev/sdb
> 
> I don't use the "-Y" (uppercase) option, so I really can't comment on
> it ... lower case (-y) works lie a charm here ...
> 
> >
> >/dev/sdb:
> > issuing sleep command
> >
> >then
> >
> >hdparm -C /dev/sdb
> >
> >/dev/sdb:
> > drive state is:  active/idle
> 
> Not sure what this means - are you sure you didn't end the "sleep" of
> the disk with this command, or is there some other process trying to
> access the disk that spinned it up again? - if you really want to
> issue the "-Y" switch maybe try the smartctl command you mentioned
> after rendering the disk to sleep, with the appropriate
> "-nocheck=<whatever>" (see man page) flag ....

There maybe a good reason why I cannot put this drive at sleep.
The /tmp partition is on this disk!


> And maybe check whether there are read/writes to the disk?
> Someth. like:
> 
> dstat -dc -C total -f 5
> 
> Again: the lower case hdparm "-y" flag seems to just be working
> here. The standy tho' is finished, IIRC, once I suspend and resume the
> computer.
> 
> Wolfgang
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