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Date: Wed, 02 Sep 2009 12:29:05 +0200
From: Miroslav Lachman <000.fbsd@quip.cz>
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To: Ronald Klop <ronald-freebsd8@klop.yi.org>
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Cc: freebsd-stable@freebsd.org
Subject: Re: zfs on gmirror slice
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Ronald Klop wrote:

> On Wed, 02 Sep 2009 10:49:05 +0200, Mark Stapper <stark@mapper.nl> wrote:

[...]

>> You could, of course, copy the base system to a USB drive, boot from it,
>> and so sidestep the whole "can't unmount root" problem, but it's hard to
>> insert a USB device over ssh... ... ...
> 
> 
> Hi,
> 
> I did this (boot via usb to upgrade zfs /) a couple of months ago and 
> the  system told me the zfs pool was owned by another machine. How can I 
> handle  that?

I think zpool export and then zpool import should fix it. See the manpage.

Miroslav Lachman