svn commit: r273955 - in head: etc/rc.d share/man/man7
John-Mark Gurney
jmg at FreeBSD.org
Sun Nov 2 00:11:27 UTC 2014
Author: jmg
Date: Sun Nov 2 00:11:25 2014
New Revision: 273955
URL: https://svnweb.freebsd.org/changeset/base/273955
Log:
add an rc.d script to automatically grow the specified FS... It has
been tested on both MBR and GPT... It won't be enabled until you add
growfs_enable="YES" and will only run on first boot..
Added:
head/etc/rc.d/growfs (contents, props changed)
head/share/man/man7/growfs.7 (contents, props changed)
Modified:
head/etc/rc.d/Makefile
head/share/man/man7/Makefile
Modified: head/etc/rc.d/Makefile
==============================================================================
--- head/etc/rc.d/Makefile Sun Nov 2 00:05:52 2014 (r273954)
+++ head/etc/rc.d/Makefile Sun Nov 2 00:11:25 2014 (r273955)
@@ -49,6 +49,7 @@ FILES= DAEMON \
geli \
geli2 \
gptboot \
+ growfs \
gssd \
hastd \
${_hcsecd} \
Added: head/etc/rc.d/growfs
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/etc/rc.d/growfs Sun Nov 2 00:11:25 2014 (r273955)
@@ -0,0 +1,98 @@
+#!/bin/sh
+#
+# Copyright 2014 John-Mark Gurney
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# PROVIDE: growfs
+# BEFORE: sysctl
+# KEYWORD: firstboot
+
+# This allows us to distribute a image
+# and have it work on essentially any size drive.
+#
+# 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
+ parttype[lvl] = $13
+ if (dev == $3) {
+ for (i = 1; i <= lvl; i++) {
+ # resize
+ if (type[i] == "PART") {
+ pdev = device[i - 1]
+ cmd[i] = "gpart resize -i " idx[i] " " pdev
+ if (parttype[i] == "GPT")
+ cmd[i] = "gpart recover " pdev " ; " cmd[i]
+ } else if (type[i] == "LABEL") {
+ continue
+ } else {
+ print "unhandled type: " type[i]
+ exit 1
+ }
+ }
+ for (i = 1; i <= lvl; i++) {
+ if (cmd[i])
+ system(cmd[i])
+ }
+ exit 0
+ }
+}' dev="$rawdev"
+ growfs -y /dev/"$rootdev"
+}
+
+load_rc_config $name
+run_rc_command "$1"
Modified: head/share/man/man7/Makefile
==============================================================================
--- head/share/man/man7/Makefile Sun Nov 2 00:05:52 2014 (r273954)
+++ head/share/man/man7/Makefile Sun Nov 2 00:11:25 2014 (r273955)
@@ -14,6 +14,7 @@ MAN= adding_user.7 \
environ.7 \
ffs.7 \
firewall.7 \
+ growfs.7 \
hier.7 \
hostname.7 \
intro.7 \
Added: head/share/man/man7/growfs.7
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/share/man/man7/growfs.7 Sun Nov 2 00:11:25 2014 (r273955)
@@ -0,0 +1,64 @@
+.\" Copyright 2014 John-Mark Gurney
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd November 1, 2014
+.Dt GROWFS 7
+.Os
+.Sh NAME
+.Nm growfs
+.Nd start up script to grow the root file-system.
+.Sh DESCRIPTION
+The following options in
+.Pa /etc/rc.conf
+control the behavior of
+.Nm :
+.Bl -tag -width ".Va growfs_enable" -offset indent
+.It Va growfs_enable
+.Pq Dq Li NO
+If set to
+.Dq Li YES ,
+the first time the machine boots, the root file-system will be automatically
+expanded, if possible, to fill up all available space after it.
+.El
+.Pp
+To expand the root file-system with-out rebooting, run the following command:
+.Dl % /etc/rc.d/growfs onestart
+.Sh IMPLEMENTATION NOTES
+The script requires that
+.Pa awk
+be present and on the path.
+This usually means that
+.Pa /usr
+should be mounted prior to running the script.
+.Sh FILES
+.Pa /etc/rc.conf
+.Sh EXIT STATUS
+.Ex -std
+.Sh SEE ALSO
+.Xr rc.conf 5
+.Sh AUTHORS
+The man page and script were written by
+.An John-Mark Gurney Aq Mt jmg at FreeBSD.org .
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