1#!/bin/sh 2# 3# (C) 2001 Luigi Rizzo, Gabriele Cecchetti 4# <Standard BSD copyright> 5# Revised 2001.04.16 6# 7# $FreeBSD: src/share/examples/diskless/clone_root,v 1.1.2.4 2002/04/07 18:16:18 luigi Exp $ 8# 9# clone root filesystem for diskless root stuff 10# 11# usage 12# clone_root all to do a full copy (e.g. bin, sbin...) 13# clone_root update to recreate /var (including devices) 14# clone_root to copy /conf and password-related files 15# 16# This script assumes that you use a shared readonly root and /usr 17# partition. The script creates a partial clone of the root partition, 18# and puts it into ${DEST} (defaults to /diskless_root ) on the server, 19# where it is read. 20# 21# To run a diskless install you need to do the following: 22# 23# create /conf/default/etc/fstab 24# this will replace the standard /etc/fstab and should contain 25# as a minimum the following lines 26# ${SERVER}:${DEST} / nfs ro 0 0 27# ${SERVER}:/usr /usr nfs ro 0 0 28# proc /proc procfs rw 0 0 29# 30# create /conf/default/etc/rc.conf 31# this will replace the standard rc.conf and should contain 32# the startup options for the diskless client. Most likely 33# you will not need to set hostname and ifconfig_* because these 34# will be already set by the startup code. You will also 35# probably need to set local_startup="" so that the server's 36# local startup files will not be used. 37# 38# create a kernel config file in /sys/i386/conf/DISKLESS with 39# options MFS 40# options BOOTP 41# options BOOTP_NFSROOT 42# options BOOTP_COMPAT 43# and do a full build of the kernel. 44# If you use the firewall, remember to default to open or your kernel 45# will not be able to send/receive the bootp packets. 46# 47# On the server: 48# enable NFS server and set /etc/exports as 49# ${DEST} -ro -maproot=0 -alldirs <list of diskless clients> 50# /usr -ro -alldirs 51# 52# enable bootpd by uncommenting the bootps line in /etc/inetd.conf 53# and putting at least the following entries in /etc/bootptab: 54# .default:\ 55# hn:ht=1:vm=rfc1048:\ 56# :sm=255.255.255.0:\ 57# :sa=${SERVER}:\ 58# :gw=${GATEWAY}:\ 59# :rp="${SERVER}:${DEST}": 60# 61# client1:ha=0123456789ab:tc=.default 62# 63# and make sure that client1 is listed in /etc/hosts 64 65# VARIABLES: 66# some manual init is needed here. 67# DEST the diskless_root dir (goes into /etc/bootptab and /etc/exports 68# on the server) 69# DEVICES device entries to create in /dev 70DEST=/diskless_root 71DEVICES="all snd1 bktr0" 72 73# you should not touch these vars: 74# SYSDIRS system directories and mountpoints 75# DIRS mountpoints (empty dirs) 76# PWFILES files related to passwords 77# TOCOPY files and dirs to copy from root partition 78 79SYSDIRS="dev proc root usr var" 80DIRS="cdrom home mnt" 81PWFILES="master.passwd passwd spwd.db pwd.db" 82TOCOPY="bin boot compat etc modules sbin stand sys" 83 84init_diskless_root() { 85 echo "Cleaning old diskless root ($DEST)" 86 cd / 87 rm -rf ${DEST} && echo "Old diskless root removed." 88 echo "Creating $DEST..." 89 mkdir -p $DEST && echo "New diskless root created." 90 echo "+++ Now copy original tree from / ..." 91 ex="" 92 (cd / ; tar -clf - ${TOCOPY} ) | (cd $DEST; tar xvf - ) 93 #(cd / ; find -x dev | cpio -o -H newc ) | \ 94 # (cd $DEST; cpio -i -H newc -d ) 95 echo "+++ Fixing permissions on some objects" 96 chmod 555 $DEST/sbin/init 97} 98 99update_conf_and_pw() { 100 echo "+++ Copying files in /conf and password files" 101 (cd ${DEST} ; rm -rf conf ) 102 (cd / ; tar clf - conf ) | (cd ${DEST}; tar xvf - ) 103 mkdir -p ${DEST}/conf/base # original copy of /etc 104 (cd / ; tar clf - etc ) | (cd ${DEST}/conf/base && tar xvf - ) 105 mkdir -p ${DEST}/conf/etc # used to mount things 106 (cd /etc ; tar cvf - ${PWFILES} ) | (cd ${DEST}/etc ; tar xf - ) 107 (cd ${DEST}/conf/base ; find etc | cpio --create -H newc | \ 108 gzip > ${DEST}/conf/base/etc.cpio.gz ) 109 (cd ${DEST} ; find dev | cpio --create -H newc | \ 110 gzip > ${DEST}/conf/dev.cpio.gz ) 111} 112 113update() { 114 echo "+++ update: create mountpoints and device entries, kernel" 115 for i in ${SYSDIRS} ${DIRS} 116 do 117 rm -r -f ${DEST}/$i 118 mkdir -p ${DEST}/$i && chown root:wheel ${DEST}/$i && echo -n "$i " 119 done 120 echo "." 121 ln -s /var/tmp ${DEST}/tmp 122 echo "+++ Now use MAKEDEV to create devices ${DEVICES}" 123 (cd $DEST/dev ; cp /dev/MAKEDEV . ) 124 (cd $DEST/dev ; /dev/MAKEDEV ${DEVICES} ) 125 (cd $DEST/dev ; ln -s /dev/sysmouse mouse ) 126 echo "+++ Copying kernel from /sys/compile/DISKLESS" 127 cp /sys/compile/DISKLESS/kernel $DEST/kernel 128 echo "." 129} 130 131 132# Main entry point 133case $1 in 134 all) # clean and reinstall the whole diskless_root 135 init_diskless_root 136 update 137 update_conf_and_pw 138 ;; 139 140 update) # clean and rebuild mountpoints and device entries 141 update 142 update_conf_and_pw 143 ;; 144 145 *) # copy /conf and password files 146 update_conf_and_pw 147 ;; 148esac 149exit 0 150### end of file ### 151