zfs discuss - Feb 2012 - 4k sector support in Solaris 11?

If I want to use a batch of new Seagate 3TB Barracudas with Solaris 11,
will zpool let me create a new pool with ashift=12 out of the box or will
I need to play around with a patched zpool binary (or the iSCSI loopback)?
-- 
Dave Pooser
Manager of Information Services
Alford Media http://www.alfordmedia.com

In message <CB62BFE5.52F20%dave.zfs at alfordmedia.com>, Dave Pooser
writes:
>If I want to use a batch of new Seagate 3TB Barracudas with Solaris 11,
I''m using the Seagate''s 3TB external drive with S11.
Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STAY3000102
>will zpool let me create a new pool with ashift=12 out of the box or will
Yes.

John
groenveld at acm.org

Hang on -

IIRC, it''s only yes to that question if the drive itself advertises
that
it''s 4K sectors.

I believed that if it uses 4K sectors, but *advertises* that it uses 512 
byte blocks, then it goes to crap pretty quickly. (witness Netapp FC 
luns, many SSD''s etc)

Is there actually a fix to allow manual setting of ashift now that I 
missed, or are you referring to the ''best case''?

Cheers,

Nathan.


On 17/02/2012 7:39 AM, John D Groenveld wrote:
> In message<CB62BFE5.52F20%dave.zfs at alfordmedia.com>, Dave Pooser
writes:
>> If I want to use a batch of new Seagate 3TB Barracudas with Solaris 11,
> I''m using the Seagate''s 3TB external drive with S11.
> Seagate Expansion 3 TB USB 3.0 Desktop External Hard Drive STAY3000102
>
>> will zpool let me create a new pool with ashift=12 out of the box or
will
> Yes.
>
> John
> groenveld at acm.org
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

In message <4F435CA9.8010201 at tuneunix.com>, nathank
writes:
>Is there actually a fix to allow manual setting of ashift now that I 
No.
<URL:http://docs.oracle.com/cd/E23824_01/html/821-1462/zpool-1m.html>

John
groenveld at acm.org