From 3b5a384b127948bea18e6162393246390b9eeaf1 Mon Sep 17 00:00:00 2001 From: vallard Date: Tue, 15 Dec 2009 20:34:04 +0000 Subject: [PATCH] file used to initialize statelite images git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@4789 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd --- .../netboot/add-on/statelite/rc.statelite | 263 ++++++++++++++++++ 1 file changed, 263 insertions(+) create mode 100755 xCAT-server/share/xcat/netboot/add-on/statelite/rc.statelite diff --git a/xCAT-server/share/xcat/netboot/add-on/statelite/rc.statelite b/xCAT-server/share/xcat/netboot/add-on/statelite/rc.statelite new file mode 100755 index 000000000..9e42027b5 --- /dev/null +++ b/xCAT-server/share/xcat/netboot/add-on/statelite/rc.statelite @@ -0,0 +1,263 @@ +#!/bin/sh +# rc.statelite will grab all the mount points we need to check +# for keeping an image together. This will have to do until unionfs +# is ready. +# don't do chkconfig: 345 00 99 +# this file runs in a chroot environment. +# description: statelite initialization script + +# get all the database files. +#set -x +SL=".statelite" +ME=`hostname` +MNTDIR="/sysroot" +SYNCTREE="${MNTDIR}/$SL/litetree" # the list of directories to sync from +SYNCLIST="${MNTDIR}/$SL/litefile" # the list of files to sync +TREEMOUNT="${MNTDIR}/$SL/mnt" # where I mount all the trees. +PERSISTENT="${MNTDIR}/$SL/persistent/$ME" +TMPFS="${MNTDIR}/$SL/tmpfs" +DEFAULT="${MNTDIR}/.default" +LOG="${MNTDIR}/${SL}/statelite.log" + + +if [ ! -d $MNTDIR ] +then + echo "statelite is only to be run in initrdfs" + exit 1 +fi + + + +GetSyncInfo () { + + # who is our xCAT server? He's most likely our dhcp identifier. + + if [ ! -x ${MNTDIR}/usr/bin/openssl ] + then + echo "Image does not include openssl!" + exit 1 + fi + + # wish we had bash! + #for x in `cat /proc/cmdline`; do + # [[ "$x" = "XCAT=*" ]] || continue + # XCATSERVER="${x#XCAT=}" + #done + + for i in `cat /proc/cmdline`; do + KEY=`echo $i | awk -F= '{print $1}'` + if [ "$KEY" == "XCAT" ]; then + XCATSERVER=`echo $i | awk -F= '{print $2}'` + break + fi + done + + + if [ -z $XCATSERVER ]; then + hn=`hostname` + echo "Cannot find the xCAT server for node $hn" + exit 1 + fi + + # request the list of files from xCAT: + xCATCmd $XCATSERVER litefile \ + | sed -e 's/<[^>]*>//g' \ + | egrep -v '^ *$' \ + | sed -e 's/^ *//' \ + | awk -F: '{print $2}' \ + | sed -e 's/^ *//' \ + > $SYNCLIST + + # files will now be inside /.snapshot/tmpfs/synclist in the form: + # options path + xCATCmd $XCATSERVER litetree \ + | sed -e 's/<[^>]*>//g' \ + | egrep -v '^ *$' \ + | sed -e 's/^ *//' \ + | awk '{print $2}' \ + > $SYNCTREE +} + +xCATCmd () { +# $1 is the xCAT server +# $2 is the command + echo "\n${2}\n" | LD_LIBRARY_PATH=/sysroot/lib64:/sysroot/usr/lib64 /sysroot/usr/bin/openssl s_client -quiet -connect ${1} -rand /bin/nice 2>/dev/null + +} + + + +MountTrees () { + mkdir -p $TREEMOUNT + if [ -z $SYNCTREE ] + then + echo "Can't read $SYNCTREE. Something is wrong with this image..." >/dev/console + exit 1 + fi + P=1 + for i in `cat $SYNCTREE | grep -v '^#'`; + do + mkdir $TREEMOUNT/$P + MAX=10 + TRIES=1 + while ! mount $i $TREEMOUNT/$P -r -n -o nolock + do + if [ "$TRIES" = "$MAX" ] + then + echo "Can't mount $i. I give up.. ">/dev/console + break + #exit 1 + fi + TRIES=`expr $TRIES + 1` + S=`expr $RANDOM % 20` + echo "Can't mount $i... Sleeping $S seconds then trying again" >/dev/console + sleep $S + done + P=`expr $P + 1` + done +} + + +ResolveLinks () { + # go through each file and do the right thing to it. + cat $SYNCLIST | grep -v "^#" | \ + while read type path + do + FindFile ${path} ${type} + done +} + + + + +ProcessType () { + #MOUNT=$1 # mount point where this is. + #PATH=$2 # file + #TYPE=$3 # type of file + + # every type has to have a base dir in tmpfs + if [ ! -d ${TMPFS}`dirname ${2}` ] + then + mkdir -p ${TMPFS}`dirname ${2}` + echo "mkdir -p ${TMPFS}`dirname ${2}`" >>$LOG + fi + + + case "${3}" in + tmpfs,rw) + cp -a ${1} ${TMPFS}${2} + echo "cp -a ${1} ${TMPFS}${2}" >>$LOG + # the link will already be in place on the image, so nothing else to do! + #mount -n --bind ${TMPFS}${2} ${1} + ;; + con) + # cons go in tmpfs + cat ${1} >>${TMPFS}${2} + echo "cat ${1} >>${TMPFS}${2}" >>$LOG + + ;; + persistent*) + # everything from root image points to tmpfs + # so have tmpfs point to persistent + + # make tree in persistent and tmpfs + if [ ! -d ${PERSISTENT}`dirname ${2}` ] + then + mkdir -p ${PERSISTENT}`dirname ${2}` + echo "mkdir -p ${PERSISTENT}`dirname ${2}`" >>$LOG + fi + + # if the file doesn't exist, then copy it over to persistent + if [ ! -e ${PERSISTENT}${2} ] + then + #ln -s ${1} ${PERSISTENT}/${2} + # if its not there, then take it from something else + echo "cp -a ${1} ${PERSISTENT}${2}" >>$LOG + cp -a ${1} ${PERSISTENT}${2} 2>&1 >>$LOG + + #mount -n --bind ${TMPFS}${2} ${1} + fi + + # finally make the tmpfs link point to the persistent file + + # you have to get rid of the /sysroot in the beginning + # so that when the chroot happens the link is valid. + LINK=`echo ${PERSISTENT}${2} | sed -e 's/^\/sysroot//'` + echo "ln -sf ${LINK} ${TMPFS}${2}" >>$LOG + ln -sf ${LINK} ${TMPFS}${2} >>$LOG 2>&1 + ;; + ro) + # need to make sure directory exists: + if [ ! -d ${TMPFS}`dirname ${2}` ] + then + mkdir -p ${TMPFS}`dirname ${2}` >>$LOG 2>&1 + fi + TARGET=`echo ${TMPFS}${2} | sed -e 's/\/$//'` + #LINK=`echo ${1} | sed -e "s/^${MNTDIR}//"` + LINK=`echo ${1} | sed -e "s/^\/sysroot//"` + + echo "ln -sf ${LINK} ${TARGET}" >>$LOG 2>&1 + ln -sf ${LINK} ${TARGET} >>$LOG 2>&1 + ;; + *) + ;; + esac +} + + +FindFile () { + # $1 = Pathname to locate + # $2 = Type of file + path=$1 + type=$2 + FOUND=0 + for DIR in `ls $TREEMOUNT` + do + if [ -e ${TREEMOUNT}/${DIR}${path} ] + then + FOUND=1 # we found it! + ProcessType ${TREEMOUNT}/${DIR}${path} ${path} ${type} + if [ "${2}" = "con" ] + then + 1 + else + break + fi + + fi + done + + + ## Default behavior is to get from the image + if [ "$FOUND" = "0" ] + then + if [ -e "${DEFAULT}${path}" ] + then + ProcessType ${DEFAULT}${path} ${path} ${type} + else + echo "Could not find ${path} in defaults or any other place" >/dev/console + fi + # if it wasn't found, mount rw in tmpfs + fi +} + + +######################################################################################## +# Start / MAIN / main +######################################################################################## + +# load up our files from xCAT +GetSyncInfo + +# mount all the tree roots. Usually there's probably only one. +MountTrees + +# find the file and then see if its the one we need. +ResolveLinks + +# make sure mtab points to the right place: +ln -sf /proc/mounts ${TMPFS}/etc/mtab + +# catch all hack for debugging: +#cp -a ${DEFAULT}/* /.snapshot/tmpfs/ +# foo