From owner-freebsd-stable@FreeBSD.ORG Thu May 31 18:13:48 2012 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 1D2AD1065670 for ; Thu, 31 May 2012 18:13:48 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id 79B5E8FC17 for ; Thu, 31 May 2012 18:13:47 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [81.187.76.163]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.5/8.14.5) with ESMTP id q4VIDg9a082873 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Thu, 31 May 2012 19:13:42 +0100 (BST) (envelope-from matthew@FreeBSD.org) X-DKIM: OpenDKIM Filter v2.5.2 smtp.infracaninophile.co.uk q4VIDg9a082873 Authentication-Results: smtp.infracaninophile.co.uk/q4VIDg9a082873; dkim=none (no signature); dkim-adsp=none Message-ID: <4FC7B4CC.1070507@FreeBSD.org> Date: Thu, 31 May 2012 19:13:32 +0100 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Damien Fleuriot References: <4FC779C0.7020801@ohlste.in> <4FC77EAD.1090900@my.gd> <4FC78A94.8070008@ohlste.in> <4FC79136.6000205@my.gd> In-Reply-To: <4FC79136.6000205@my.gd> X-Enigmail-Version: 1.4.1 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig287B588498B87C4069CBDBAC" X-Virus-Scanned: clamav-milter 0.97.4 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lucid-nonsense.infracaninophile.co.uk Cc: freebsd-stable@FreeBSD.org, Jim Ohlstein Subject: Re: Why Are You Using FreeBSD? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 May 2012 18:13:48 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig287B588498B87C4069CBDBAC Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 31/05/2012 16:41, Damien Fleuriot wrote: > You missed the bit about 3 reboots, while these don't take 15 mins each= , > they're still time consuming and disruptive. > 1/ reboot after installing new kernel > 2/ reboot after installing new world > 3/ reboot after rebuilding ports If you rebuilt the ports first, then you'ld only have two reboots. Also, while the cautious approach detailed in /usr/src/UPDATING is never wrong, much of the time you can do the upgrade perfectly well by installing world+kernel together and just rebooting once. Obviously this is not a good idea if your machines are in a datacenter many miles away and you don't have console-equivalent access or if you're upgrading over a large delta in versions, or you're making major changes to the kernel config. This sort of operation is something that ZFS boot environment support (recently committed to HEAD, due for MFC within the month) makes much, much safer and easier to deal with. You don't need to do a separate reboot to test the kernel as you've still got an entire kernel+world in the previous BE to fall back on. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey --------------enig287B588498B87C4069CBDBAC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk/HtNYACgkQ8Mjk52CukIywRgCfX+WvsKvgcz51fMgM1TNr3b6c KHgAn0c0NJbtTQJCDQGL8X8n0KthbreC =EBdP -----END PGP SIGNATURE----- --------------enig287B588498B87C4069CBDBAC--