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Date:      Sat, 21 Nov 2009 11:36:43 -0800
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Johan Hendriks <Johan@double-l.nl>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: 7.2 dies in zfs
Message-ID:  <20091121193643.GA14122@icarus.home.lan>
In-Reply-To: <57200BF94E69E54880C9BB1AF714BBCBA5722E@w2003s01.double-l.local>
References:  <m2skcajavv.wl%randy@psg.com> <m2r5ruja6v.wl%randy@psg.com> <4B066B13.1070006@freebsd.org> <m2bpiwitz7.wl%randy@psg.com> <4b07ac59.A2Afaf4X0IZlrgGU%perryh@pluto.rain.com> <57200BF94E69E54880C9BB1AF714BBCBA5722E@w2003s01.double-l.local>

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On Sat, Nov 21, 2009 at 08:07:40PM +0100, Johan Hendriks wrote:
> Randy Bush <randy@psg.com> wrote:
> > imiho, zfs can not be called production ready if it crashes if you
> > do not stand on your left leg, put your right hand in the air, and
> > burn some eye of newt.
> 
> This is not a rant, but where do you read that on FreeBSD 7.2 ZFS has
> been marked as production ready.
> As far as i know, on FreeBSD 8.0 ZFS is called production ready.
> 
> If you boot your system it probably tell you it is still experimental.
> 
> Try running FreeBSD 7-Stable to get the latest ZFS version which on
> FreeBSD is 13
> On 7.2 it is still at 6 (if I remember it right).

RELENG_7 uses ZFS v13, RELENG_8 uses ZFS v18.

RELENG_7 and RELENG_8 both, more or less, behave the same way with
regards to ZFS.  Both panic on kmem exhaustion.  No one has answered my
question as far as what's needed to stabilise ZFS on either 7.x or 8.x.

The people who need to answer the question are those who are familiar
with the code.  Specifically: Kip Macy, Pawel Jakub Dawidek, and anyone
else who knows the internals.  Everyone else in the user community is
simply guessing + going crazy trying to figure out a solution.

As much as I appreciate all the work that has been done to bring ZFS to
FreeBSD -- and I do mean that! -- we need answers at this point.

-- 
| Jeremy Chadwick                                   jdc@parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |



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