[OmniOS-discuss] 4kn or 512e with ashift=12

[Fred Liu]

> -----Original Message-----
> From: OmniOS-discuss [mailto:omnios-discuss-bounces at lists.omniti.com] On
> Behalf Of Richard Elling
> Sent: 星期二, 三月 22, 2016 3:21
> To: Bob Friesenhahn
> Cc: omnios-discuss at lists.omniti.com
> Subject: Re: [OmniOS-discuss] 4kn or 512e with ashift=12
> 
> 
> > On Mar 21, 2016, at 12:19 PM, Bob Friesenhahn
> <bfriesen at simple.dallas.tx.us> wrote:
> >
> > On Mon, 21 Mar 2016, Richard Elling wrote:
> >>>
> >>> Adding the ashift argument to zpool was discussed every few years and so
> far was always deemed not enterprisey enough for the Solaris heritage, so the
> setup to tweak sd driver reports and properly rely on that layer was pushed
> instead.
> >>
> >> The issue is that once a drive model lies, then the Solaris approach
> >> is to encode the lie into a whitelist, so that the lie is always
> >> handled properly. The whitelist is in the sd.conf file.
> >
> > Does this approach require that Illumos users only use drive hardware much
> older than the version of Illumos they happen running since outdated whitelist
> won't know about the new lies?
> 
> Forunately, lies are becoming less common. But this raises a good point: if your
> drive doesn't lie, then you don't need to workaround.

That means 512n and 4kn are handled correctly by default, right?


Thanks.

Fred