Date: Wed, 17 Dec 2014 15:57:59 -0500 From: Mike Tancsa <mike@sentex.net> To: jd1008 <jd1008@gmail.com>, freebsd-questions@freebsd.org Subject: Re: zfs and 512/4096 sector sizes Message-ID: <5491EE57.60801@sentex.net> In-Reply-To: <5491EC98.3000507@gmail.com> References: <5491E462.2020902@sentex.net> <5491E5A0.9090306@gmail.com> <5491E61B.9070505@bluerosetech.com> <5491E775.5010403@gmail.com> <5491E82D.8090105@sentex.net> <5491EA62.2080401@gmail.com> <5491EBA1.6080606@sentex.net> <5491EC98.3000507@gmail.com>
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On 12/17/2014 3:50 PM, jd1008 wrote:
> Can you not dismantle the pool without destroying the data?
> I mean what if you took it offline, rebuilt the pool with the same
> drives in the same slots (one at a time - and recheck status)?
I am not sure what you mean by dismantle then? All the drives in the
pool are 512k now. The original pool was created with just 512k drives
too (long ago). There are no 4096k drives part of it any more. The one
that was 4096k (ada0) has been removed.
# jot 15 0 | awk '{print " camcontrol identify ada"$1" | grep
\"sector.*physical\""}' | sh
sector size logical 512, physical 4096, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
sector size logical 512, physical 512, offset 0
# zpool status | grep ada0
#
---Mike
--
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada http://www.tancsa.com/
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