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Date:      Mon, 28 Jan 2013 07:11:40 +1100
From:      Peter Jeremy <peter@rulingia.com>
To:        Steven Hartland <killing@multiplay.co.uk>
Cc:        current@freebsd.org, fs@freebsd.org, Ulrich =?iso-8859-1?Q?Sp=F6rlein?= <uqs@freebsd.org>
Subject:   Re: Zpool surgery
Message-ID:  <20130127201140.GD29105@server.rulingia.com>
In-Reply-To: <1F0546C4D94D4CCE9F6BB4C8FA19FFF2@multiplay.co.uk>
References:  <20130127103612.GB38645@acme.spoerlein.net> <1F0546C4D94D4CCE9F6BB4C8FA19FFF2@multiplay.co.uk>

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On 2013-Jan-27 14:31:56 -0000, Steven Hartland <killing@multiplay.co.uk> wr=
ote:
>----- Original Message -----=20
>From: "Ulrich Sp=F6rlein" <uqs@FreeBSD.org>
>> I want to transplant my old zpool tank from a 1TB drive to a new 2TB
>> drive, but *not* use dd(1) or any other cloning mechanism, as the pool
>> was very full very often and is surely severely fragmented.
>
>Cant you just drop the disk in the original machine, set it as a mirror
>then once the mirror process has completed break the mirror and remove
>the 1TB disk.

That will replicate any fragmentation as well.  "zfs send | zfs recv"
is the only (current) way to defragment a ZFS pool.

--=20
Peter Jeremy

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