From owner-freebsd-rc@FreeBSD.ORG Mon May 5 00:42:42 2014 Return-Path: Delivered-To: freebsd-rc@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 10ED2A89 for ; Mon, 5 May 2014 00:42:42 +0000 (UTC) Received: from h2.funkthat.com (gate2.funkthat.com [208.87.223.18]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "funkthat.com", Issuer "funkthat.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id DCC6013A6 for ; Mon, 5 May 2014 00:42:38 +0000 (UTC) Received: from h2.funkthat.com (localhost [127.0.0.1]) by h2.funkthat.com (8.14.3/8.14.3) with ESMTP id s450gbGI037089 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 4 May 2014 17:42:37 -0700 (PDT) (envelope-from jmg@h2.funkthat.com) Received: (from jmg@localhost) by h2.funkthat.com (8.14.3/8.14.3/Submit) id s450gbtu037088 for freebsd-rc@FreeBSD.org; Sun, 4 May 2014 17:42:37 -0700 (PDT) (envelope-from jmg) Date: Sun, 4 May 2014 17:42:37 -0700 From: John-Mark Gurney To: freebsd-rc@FreeBSD.org Subject: growfs rc script... Message-ID: <20140505004237.GP43976@funkthat.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="pwWdILMQNxDD/Cps" Content-Disposition: inline User-Agent: Mutt/1.4.2.3i X-Operating-System: FreeBSD 7.2-RELEASE i386 X-PGP-Fingerprint: 54BA 873B 6515 3F10 9E88 9322 9CB1 8F74 6D3F A396 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html X-TipJar: bitcoin:13Qmb6AeTgQecazTWph4XasEsP7nGRbAPE X-to-the-FBI-CIA-and-NSA: HI! HOW YA DOIN? can i haz chizburger? X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.2 (h2.funkthat.com [127.0.0.1]); Sun, 04 May 2014 17:42:38 -0700 (PDT) X-BeenThere: freebsd-rc@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: "Discussion related to /etc/rc.d design and implementation." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 May 2014 00:42:42 -0000 --pwWdILMQNxDD/Cps Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Crochet uses a script to grow the FS so that images can be smaller and used with different sizes of SD cards... Crochet hard coded the devices to resize, so I have taken the script and made it such that it will work on any set of partitions to resize the root fs... I think it'd be useful to integrate this into base... Though it probably does need some tweeks before committing.. Comments? Thanks. -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not." --pwWdILMQNxDD/Cps Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=growfs #!/bin/sh # PROVIDE: growfs # BEFORE: sysctl # KEYWORD: firstbootonly # Automatically grow / to fill the entire disk. # # This allows us to distribute a single image # and have it work on essentially any sized disk. # # TODO: Figure out a clean way to have this run # only on first boot. (We can't write anything to # disk here since the root disk is still mounted # read-only at this point.) Fortunately, it completes # very quickly if it can't actually grow the partition. # # TODO: Figure out where this should really be ordered. # I suspect it should go just after fsck but before mountcritlocal # but it's hard to tell for sure because of the bug described # below. # . /etc/rc.subr name="growfs" start_cmd="growfs_start" stop_cmd=":" rcvar="growfs_enable" growfs_start () { echo "Growing root partition to fill device" rootdev=$(df / | tail -n 1 | awk '{ sub("/dev/", "", $1); print $1 }') if [ x"$rootdev" = x"${rootdev%/*}" ]; then # raw device rawdev="$rootdev" else rawdev=$(glabel status | awk '$1 == "'"$rootdev"'" { print $3 }') if [ x"$rawdev" = x"" ]; then echo "Can't figure out device for: $rootdev" return fi fi sysctl -b kern.geom.conftxt | awk ' { lvl=$1 device[lvl] = $3 type[lvl] = $2 idx[lvl] = $7 if (dev == $3) { for (i = 1; i <= lvl; i++) { # resize if (type[i] == "PART") { pdev = device[i - 1] cmd[i] = "gpart resize -i " idx[i] " " pdev } else if (type[i] == "LABEL") { continue } else { print "unhandled type: " type[i] exit 1 } } for (i = 1; i <= lvl; i++) { if (cmd[i]) system(cmd[i]) } exit 0 } }' dev="$rawdev" growfs -y /dev/"$rootdev" } load_rc_config $name run_rc_command "$1" --pwWdILMQNxDD/Cps--