zfs discuss - Sep 2010 - How to migrate to 4KB sector drives?

ZFS does not handle 4K sector drives well, you need to create a new zpool with
"4K" property (ashift) set.
http://www.solarismen.de/archives/5-Solaris-and-the-new-4K-Sector-Disks-e.g.-WDxxEARS-Part-2.html

Are there plans to allow resilver to handle 4K sector drives?
-- 
This message posted from opensolaris.org

No replies. Does this mean that you should avoid large drives with 4KB sectors,
that is, new drives? ZFS does not handle new drives?
-- 
This message posted from opensolaris.org

On Sun, Sep 12, 2010 at 10:07 AM, Orvar Korvar
<knatte_fnatte_tjatte at yahoo.com> wrote:
> No replies. Does this mean that you should avoid large drives with 4KB
sectors, that is, new drives? ZFS does not handle new drives?
Solaris 10u9 handles 4k sectors, so it might be in a post-b134 release of osol.

-B

-- 
Brandon High : bhigh at freaks.com

On Sep 12, 2010, at 10:11 AM, Brandon High wrote:
> On Sun, Sep 12, 2010 at 10:07 AM, Orvar Korvar
> <knatte_fnatte_tjatte at yahoo.com> wrote:
>> No replies. Does this mean that you should avoid large drives with 4KB
sectors, that is, new drives? ZFS does not handle new drives?
> 
> Solaris 10u9 handles 4k sectors, so it might be in a post-b134 release of
osol.
OSol source yes, binaries no :-(  You will need another distro besides
OpenSolaris.
The needed support in sd was added around the b137 timeframe.
 -- richard

-- 
OpenStorage Summit, October 25-27, Palo Alto, CA
http://nexenta-summit2010.eventbrite.com

Richard Elling
richard at nexenta.com   +1-760-896-4422
Enterprise class storage for everyone
www.nexenta.com

On Sun, Sep 12, 2010 at 5:42 PM, Richard Elling <Richard at nexenta.com>
wrote:
> On Sep 12, 2010, at 10:11 AM, Brandon High wrote:
>
>> On Sun, Sep 12, 2010 at 10:07 AM, Orvar Korvar
>> <knatte_fnatte_tjatte at yahoo.com> wrote:
>>> No replies. Does this mean that you should avoid large drives with
4KB sectors, that is, new drives? ZFS does not handle new drives?
>>
>> Solaris 10u9 handles 4k sectors, so it might be in a post-b134 release
of osol.
>
> OSol source yes, binaries no :-( ?You will need another distro besides
OpenSolaris.
> The needed support in sd was added around the b137 timeframe.
OpenIndiana, to be released on Tuesday, is based on b146 or later.

-- 
Mike Gerdts
http://mgerdts.blogspot.com/

On Sun, Sep 12, 2010 at 3:42 PM, Richard Elling <Richard at nexenta.com>
wrote:
> OSol source yes, binaries no :-( ?You will need another distro besides
OpenSolaris.
> The needed support in sd was added around the b137 timeframe.
Do you know if it''s been backported to Nexenta Core? There
doesn''t
seem to be a list of backported changes available on nexenta.org.

-B

-- 
Brandon High : bhigh at freaks.com

Orvar Korvar wrote:
> ZFS does not handle 4K sector drives well, you need to create a new zpool
with "4K" property (ashift) set.
>
http://www.solarismen.de/archives/5-Solaris-and-the-new-4K-Sector-Disks-e.g.-WDxxEARS-Part-2.html
>
> Are there plans to allow resilver to handle 4K sector drives?
>   
Not sure about resilvering to 4K but as manual for Solaris under link
you provided is describing,
it can make new zpools aligned to 4K.

Untill OpenIndiana.org come to life,
maybe in meantime you can try to build Illumos OS/Net testing part, have
it in separate BE on top of 134b Opensolaris from genunix.org and try to
_for testing_ 4K sector drives rpool instructions you found, on it.
http://www.illumos.org/projects/illumos-gate/wiki/How_To_Build_illumos

>On Sun, Sep 12, 2010 at 10:07 AM, Orvar Korvar
><knatte_fnatte_tjatte at yahoo.com> wrote:
>> No replies. Does this mean that you should avoid large drives with 4KB
sectors, that is, new dri
ves? ZFS does not handle new drives?
>
>Solaris 10u9 handles 4k sectors, so it might be in a post-b134 release of
osol.
>

Build 118 adds support for 4K sectors with the following putback:

PSARC 2008/769 Multiple disk sector size support.
6710930 Solaris needs to support large sector size hard drive disk

But already in build 38 there is some support for large-sector disks in
ZFS.  6407365 large-sector disk support in ZFS


When new features are added to the "current" release, it is typically
created
for the next release and then backported to the "current" release.

Casper