From owner-freebsd-fs@FreeBSD.ORG  Tue Dec  1 12:32:10 2009
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Date: Tue, 1 Dec 2009 13:32:06 +0100
From: Gerrit =?ISO-8859-1?Q?K=FChn?= <gerrit@pmp.uni-hannover.de>
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Subject: zfs/zpool upgrade
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Hi all,

I have one question concerning zfs and zpool upgrades:

Some time ago I saw some postings here with procedures to upgrade to newer
zpool and zfs versions. These contained exporting and importing the pool
(and upgrading in-between, of course :-).
Is the export strictly neccessary? I have no machine where I could try it
right now, but I think I did use zpool upgrade on imported and online
pools before without noticing any problems.


cu
  Gerrit