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Diffstat (limited to 'share/examples/diskless/clone_root')
| -rwxr-xr-x | share/examples/diskless/clone_root | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/share/examples/diskless/clone_root b/share/examples/diskless/clone_root new file mode 100755 index 000000000000..22bd70c99796 --- /dev/null +++ b/share/examples/diskless/clone_root @@ -0,0 +1,138 @@ +#!/bin/sh +# +# (C) 2001 Luigi Rizzo, Gabriele Cecchetti +# <Standard BSD copyright> +# Revised 2001.04.16 +# +# $FreeBSD$ +# +# clone root filesystem for diskless root stuff +# +# usage +# clone_root all to do a full copy (e.g. bin, sbin...) +# clone_root update to recreate /var (including devices) +# clone_root to copy /conf and password-related files +# +# This script assumes that you use a shared readonly root and /usr +# partition. The script creates a partial clone of the root partition, +# and puts it into ${DEST} (defaults to /diskless_root ) on the server, +# where it is read. +# +# To run a diskless install you need to do the following: +# +# create /conf/default/etc/fstab +# this will replace the standard /etc/fstab and should contain +# as a minimum the following lines +# ${SERVER}:${DEST} / nfs ro 0 0 +# ${SERVER}:/usr /usr nfs ro 0 0 +# proc /proc procfs rw 0 0 +# +# create /conf/default/etc/rc.conf +# this will replace the standard rc.conf and should contain +# the startup options for the diskless client. Most likely +# you will not need to set hostname and ifconfig_* because these +# will be already set by the startup code. You will also +# probably need to set local_startup="" so that the server's +# local startup files will not be used. +# +# create a kernel config file in /sys/i386/conf/DISKLESS with +# options MD_ROOT +# options BOOTP +# options BOOTP_NFSROOT +# options BOOTP_COMPAT +# and do a full build of the kernel. +# If you use the firewall, remember to default to open or your kernel +# will not be able to send/receive the bootp packets. +# +# On the server: +# enable NFS server and set /etc/exports as +# ${DEST} -maproot=0 -alldirs <list of diskless clients> +# /usr -alldirs +# +# enable bootpd by uncommenting the bootps line in /etc/inetd.conf +# and putting at least the following entries in /etc/bootptab: +# .default:\ +# hn:ht=1:vm=rfc1048:\ +# :sm=255.255.255.0:\ +# :sa=${SERVER}:\ +# :gw=${GATEWAY}:\ +# :rp="${SERVER}:${DEST}": +# +# client1:ha=0123456789ab:tc=.default +# +# and make sure that client1 is listed in /etc/hosts + +# VARIABLES: +# some manual init is needed here. +# DEST the diskless_root dir (goes into /etc/bootptab and /etc/exports +# on the server) +DEST=/diskless_root + +# you should not touch these vars: +# SYSDIRS system directories and mountpoints +# DIRS mountpoints (empty dirs) +# PWFILES files related to passwords +# TOCOPY files and dirs to copy from root partition + +SYSDIRS="dev proc root usr var" +DIRS="cdrom home mnt" +PWFILES="master.passwd passwd spwd.db pwd.db" +TOCOPY="bin boot compat etc modules sbin stand sys" + +init_diskless_root() { + echo "Cleaning old diskless root ($DEST)" + cd / + rm -rf ${DEST} && echo "Old diskless root removed." + echo "Creating $DEST..." + mkdir -p $DEST && echo "New diskless root created." + echo "+++ Now copy original tree from / ..." + ex="" + (cd / ; tar -clf - ${TOCOPY} ) | (cd $DEST; tar xvf - ) + #(cd / ; find -x dev | cpio -o -H newc ) | \ + # (cd $DEST; cpio -i -H newc -d ) + echo "+++ Fixing permissions on some objects" + chmod 555 $DEST/sbin/init +} + +update_conf_and_pw() { + echo "+++ Copying files in /conf and password files" + (cd ${DEST} ; rm -rf conf ) + (cd / ; tar clf - conf ) | (cd ${DEST}; tar xvf - ) + mkdir -p ${DEST}/conf/etc # used to mount things + (cd /etc ; tar cvf - ${PWFILES} ) | (cd ${DEST}/etc ; tar xf - ) +} + +update() { + echo "+++ update: create mountpoints and device entries, kernel" + for i in ${SYSDIRS} ${DIRS} + do + rm -r -f ${DEST}/$i + mkdir -p ${DEST}/$i && chown root:wheel ${DEST}/$i && echo -n "$i " + done + echo "." + ln -s /var/tmp ${DEST}/tmp + echo "+++ Copying kernel from /sys/compile/DISKLESS" + cp /sys/compile/DISKLESS/kernel $DEST/kernel + echo "." +} + + +# Main entry point +case $1 in + all) # clean and reinstall the whole diskless_root + init_diskless_root + update + update_conf_and_pw + ;; + + update) # clean and rebuild mountpoints and device entries + update + update_conf_and_pw + ;; + + *) # copy /conf and password files + update_conf_and_pw + ;; +esac +exit 0 +### end of file ### |