zfs discuss - May 2011 - Compatibility between Sun-Oracle Fishworks appliance zfs and other zfs implementations

Hi,

We have a Sun/Oracle Fishworks appliance that we have spent a good 
amount of $ on. This is a great box and we love it, although the EDU 
discounts that Sun used to provide for hardware and support contracts 
seem to have dried up so the cost of supporting it moving forward is 
still unknown.

My question is how compatible are the ZPOOL versions between the 
open-source ZFS implementations and the latest on-disk format from 
Fishworks'' ZFS...

Heres what I see, having applied the very latest "firmware" 
(2010.Q3.2.1) to the box, and applying the deferred updates (zpool upgrades)

pike# zpool get version internal
NAME      PROPERTY  VALUE    SOURCE
internal  version   28       default
pike# zpool get version external-J4400-12x1TB
NAME                   PROPERTY  VALUE    SOURCE
external-J4400-12x1TB  version   28       default
pike#

Can I expect to move my JBOD over to a different OS such as FreeBSD, 
Illuminos, or Solaris  and be able to get my data off still?  (by this i 
mean perform a zpool import on another platform)

The compatibility of ZFS was a major selling point for us getting in to 
this appliance originally ... we were swayed by the "open storage" 
marketing and whatnot... I guess Im asking if it looks like the 
situation has changed.  Apologies for the "fuzzy" question

Matt

On Wed, May 25, 2011 at 8:01 PM, Matt Weatherford <mbw at
u.washington.edu>wrote:
> pike# zpool get version internal
> NAME      PROPERTY  VALUE    SOURCE
> internal  version   28       default
> pike# zpool get version external-J4400-12x1TB
> NAME                   PROPERTY  VALUE    SOURCE
> external-J4400-12x1TB  version   28       default
> pike#
>
> Can I expect to move my JBOD over to a different OS such as FreeBSD,
> Illuminos, or Solaris  and be able to get my data off still?  (by this i
> mean perform a zpool import on another platform)

Yes, because zpool version 28 is supported in Illumos.  I''m sure Oracle
Solaris does or will soon support it too.  According to Wikipedia, "the
9-current development branch [of FreeBSD] uses ZFS Pool version 28".

FYI, version 28 is the last Oracle-supplied open-source version, so
non-Oracle implementations will probably not support versions 29, 30, etc.

--matt
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In message <4DDDC270.6060506 at u.washington.edu>, Matt Weatherford
writes:
>amount of $ on. This is a great box and we love it, although the EDU 
>discounts that Sun used to provide for hardware and support contracts 
>seem to have dried up so the cost of supporting it moving forward is 
>still unknown.
Ask Keith Block and company''s sales critter about "Hardware from
Oracle
- Pricing for Education (HOPE)":
<URL:http://www.oracle.com/ocom/groups/public/@ocom/documents/webcontent/364419.pdf>

John
groenveld at acm.org

On Wed, May 25, 2011 at 9:30 PM, Matthew Ahrens <mahrens at delphix.com>
wrote:
> On Wed, May 25, 2011 at 8:01 PM, Matt Weatherford <mbw at
u.washington.edu>wrote:
>
>> pike# zpool get version internal
>> NAME      PROPERTY  VALUE    SOURCE
>> internal  version   28       default
>> pike# zpool get version external-J4400-12x1TB
>> NAME                   PROPERTY  VALUE    SOURCE
>> external-J4400-12x1TB  version   28       default
>> pike#
>>
>> Can I expect to move my JBOD over to a different OS such as FreeBSD,
>> Illuminos, or Solaris  and be able to get my data off still?  (by this
i
>> mean perform a zpool import on another platform)
>
>
> Yes, because zpool version 28 is supported in Illumos.  I''m sure
Oracle
> Solaris does or will soon support it too.  According to Wikipedia,
"the
> 9-current development branch [of FreeBSD] uses ZFS Pool version 28".
>
Correct.  FreeBSD 9-CURRENT (dev branch that will be released as 9.0 at some
point) as of March or April includes support for ZFSv28.

And FreeBSD 8-STABLE (dev branch that will be released as 8.3 at some point)
has patches available to support ZFSv28 here:
http://people.freebsd.org/~mm/patches/zfs/v28/

ZFS-on-FUSE for Linux currently only supports ZFSv23.

So you can "safely" use Illumos, Nexenta, FreeBSD, etc with ZFSv28. 
You can
also use Solaris 11 Express, so long as you don''t upgrade the pool
version
(SolE includes ZFSv31).

-- 
Freddie Cash
fjwcash at gmail.com
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On Thu, 2011-05-26 at 09:36 -0700, Freddie Cash wrote:
> On Wed, May 25, 2011 at 9:30 PM, Matthew Ahrens <mahrens at
delphix.com>
> wrote:
>         On Wed, May 25, 2011 at 8:01 PM, Matt Weatherford
>         <mbw at u.washington.edu> wrote:
>                 pike# zpool get version internal
>                 NAME      PROPERTY  VALUE    SOURCE
>                 internal  version   28       default
>                 pike# zpool get version external-J4400-12x1TB
>                 NAME                   PROPERTY  VALUE    SOURCE
>                 external-J4400-12x1TB  version   28       default
>                 pike#
>                 
>                 Can I expect to move my JBOD over to a different OS
>                 such as FreeBSD, Illuminos, or Solaris  and be able to
>                 get my data off still?  (by this i mean perform a
>                 zpool import on another platform)
>         
>         
>         Yes, because zpool version 28 is supported in Illumos. 
I''m
>         sure Oracle Solaris does or will soon support it too.
>          According to Wikipedia, "the 9-current development branch [of
>         FreeBSD] uses ZFS Pool version 28".
> 
> Correct.  FreeBSD 9-CURRENT (dev branch that will be released as 9.0
> at some point) as of March or April includes support for ZFSv28.
> 
> And FreeBSD 8-STABLE (dev branch that will be released as 8.3 at some
> point) has patches available to support ZFSv28 here:
> http://people.freebsd.org/~mm/patches/zfs/v28/
> 
> 
> ZFS-on-FUSE for Linux currently only supports ZFSv23.
> 
> So you can "safely" use Illumos, Nexenta, FreeBSD, etc with
ZFSv28.
> You can also use Solaris 11 Express, so long as you don''t upgrade
the
> pool version (SolE includes ZFSv31).
> 
> -- 
> Freddie Cash
> fjwcash at gmail.com

[Note: none of this is proprietary Oracle knowledge, and I do not speak
as an Oracle representative in any way]


The Fishworks stuff runs on a version of Solaris 11 - it''s not some
forked Solaris branch.  So, when Solaris 11 finally ships, you can
expect that the latest Solaris 11 Update + CRU (patches) should always
be able to fully utilize any Fishworks-written volume.

As pointed out above by others, however, I would never count on a
Fishworks volume (particularly one which used the latest-available
Fishworks software update) being able to be read on *anything* other
than Solaris 11.  As S11 advances, Fishworks gets updated too, so the
ZFS/zpool version number advances.


Solaris 11 is due out RSN, which means probably sometime before the end
of the calendar year. But who knows, and Oracle hasn''t officially
announced a launch date for S11.


-- 
Erik Trimble
Java System Support
Mailstop:  usca22-317
Phone:  x67195
Santa Clara, CA
Timezone: US/Pacific (GMT-0800)