Date: Wed, 29 Dec 2010 17:47:29 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Freek van Hemert <fvhemert@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: slow ZFS on FreeBSD 8.1 Message-ID: <4D1B7431.7070808@infracaninophile.co.uk> In-Reply-To: <AANLkTim2oV3phJ4bTFL_ENNZYknm7Gjt_3uFdMd1UpYd@mail.gmail.com> References: <AANLkTinfYync_BG3zV028Or4ZgHe5iQ2tLVd1mn4a0r%2B@mail.gmail.com> <4D1AF388.3080107@infracaninophile.co.uk> <AANLkTim2oV3phJ4bTFL_ENNZYknm7Gjt_3uFdMd1UpYd@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --]
On 29/12/2010 08:57, Freek van Hemert wrote:
> The hacks sounds good until 8.2 is released however, regarding this upgrade,
> is the on-disk format the same? Can I just add the pool to a new install (of
> 8.2-RC) and expect higher performance? Or do I need to recreate the pool
> with the newer versions of the utilities?
No -- the on-disk format is different. ZFS will run fine with the older
on-disk formats, but you won't get the full benefits without updating
them. You'll need to run both 'zpool update -a' and 'zfs update -a' --
this is a non-reversible step, so be certain you will never need to
downgrade before doing it. Also, you *will* need to update gptzfsboot
on your drives, or you will come to a sticky end if you try and reboot.
Something like this:
# gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ad0
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
JID: matthew@infracaninophile.co.uk Kent, CT11 9PW
[-- Attachment #2 --]
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2.0.16 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
iEYEARECAAYFAk0bdDkACgkQ8Mjk52CukIzYtgCgiqmzK5kMMqiqC3Hxg7pgLoqN
QTAAniZ8vAAJplHbPEwqdhn85oSGpCeX
=4wVD
-----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4D1B7431.7070808>