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From: Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com>
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Date: Fri, 21 Nov 2008 22:43:10 +0000
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Cc: Philipp Wuensche <cryx-freebsd@h3q.com>
Subject: Re: HEADS UP: New ZFS in the tree.
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On Friday 21 November 2008 21:33:50 Philipp Wuensche wrote:
> Thomas Sparrevohn wrote:
> > 
> > Yes it works if you have either created a new pool or made sure that all mountpoints have
> > the version=3 flag set 
> > 
> > What got me is that zpool upgrade does not change the version of the mountpoints e.g. 
> > they stay version 1
> > 
> > so a simple 
> > 
> > 	foreach i (`zfs list -H -t filesystem -o name `)
> > 		zfs set version=3 
> > 	end
> 
> Just do zfs upgrade -r tank
> 
> greetings,
> philipp
> 
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> 

Nope - it does not upgrade the property for existing data sets  - It only upgrades - or at least when I did it - 
the pool itself - for the data sets you need to either create new ones or manually upgrade the version property