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Date:      Mon, 19 Sep 2011 14:38:13 -0700
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Freddie Cash <fjwcash@gmail.com>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: ZFS auto expand mirror
Message-ID:  <20110919213813.GA70527@icarus.home.lan>
In-Reply-To: <CAOjFWZ5jfQqCEzrgrqmNtLki4%2BzPwuno6dPFRhfM-qYdEM8Lfg@mail.gmail.com>
References:  <9774D03B-A8C7-48DE-9BC4-528DD4134787@altesco.nl> <CAOjFWZ5jfQqCEzrgrqmNtLki4%2BzPwuno6dPFRhfM-qYdEM8Lfg@mail.gmail.com>

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On Mon, Sep 19, 2011 at 10:49:56AM -0700, Freddie Cash wrote:
> On Mon, Sep 19, 2011 at 10:08 AM, Ben Stuyts <ben@altesco.nl> wrote:
> 
> > I want to expand an existing mirror by replacing the existing drives with
> > bigger ones. This is on:
> > FreeBSD xxx 7.3-STABLE FreeBSD 7.3-STABLE #2: Mon Sep 20 18:36:08 CEST 2010
> >     root@xxx:/usr/obj/usr/src/sys/xxx  amd64
> >
> > # zpool status home
> >  pool: home
> >  state: ONLINE
> >  scrub: scrub completed after 2h0m with 0 errors on Mon Sep 19 18:25:45
> > 2011
> > config:
> >
> >        NAME        STATE     READ WRITE CKSUM
> >        home        ONLINE       0     0     0
> >          mirror    ONLINE       0     0     0
> >            ad5s1a  ONLINE       0     0     0
> >            ad7s1a  ONLINE       0     0     0
> >
> > Will this version of FreeBSD auto-expand to the new, bigger drive size once
> > they are both replaced? I did not see the autoexpand property in this pool.
> > zpool is v13, zfs is v3.
> >
> 
> No.  You will need to reboot the system in order for the extra space to
> become usable in the pool.  Or, if none of the OS is installed on the pool,
> you can export/import the pool to make the new space available.

Does this advice/fact apply to FreeBSD 7.3?  To my knowledge it does
not.  The ZFS version is too old.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |




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