xcat-core/xCAT/postscripts/aixlitesetup
2011-01-30 20:30:26 +00:00

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#!/bin/ksh
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
################################################################################
#
# aixlitesetup
# - This script is used to configure the xCAT statelite support
# for AIX
#
###############################################################################
SL="/.statelite"
ROOTDIR="/"
MOUNTDIR="$SL/mnt" # where I mount all the trees.
PERSISTENT="$SL/persistent"
TMPDIR="$SL/tmpdir"
DEFAULT="/.default"
# statelite table files are in "/"
# /statelite.table, /litefile.table, /litetree.table
STATELITE="/statelite.table"
LITEFILE="/litefile.table"
LITETREE="/litetree.table"
LOG="${ROOTDIR}/${SL}/statelite.log"
ELIST=[] # entry list, each entry will contain the type and the path
# get this node name from the /etc/niminfo file
INFO=`/usr/bin/cat /etc/niminfo | grep 'NIM_HOSTNAME'`
ME=`echo $INFO | /usr/bin/awk -F= '{print $2}' | /usr/bin/awk -F. '{print $1}'`
if [ ! -s ${STATELITE} ]; then
echo "no ${STATELITE} file"
echo "no ${STATELITE} file" >>$LOG
exit 0
fi
if [ ! -s ${LITEFILE} ]; then
echo "no ${LITEFILE} file"
echo "no ${LITEFILE} file" >>$LOG
exit 0
fi
# check the statelite.table file to see if we have
# a persistent dir to mount.
ProcessStatelite () {
for i in `/usr/bin/cat $STATELITE | /usr/bin/grep -v '^#' | /usr/bin/grep $ME`
do
SERVER=`echo $i | /usr/bin/awk -F'|' '{print $2}'`
TOMNT=`echo $i | /usr/bin/awk -F'|' '{print $3}'`
# /.statelite/tmpdir
if [ ! -d ${TMPDIR} ]; then
mkdir -m 755 -p ${TMPDIR}
fi
# /.statelite/persistent
if [ ! -d ${PERSISTENT} ]; then
mkdir -m 755 -p ${PERSISTENT}
fi
# mount 10.2.0.200:/nodedata /.statelite/persistent
/usr/sbin/mount $SERVER:$TOMNT ${PERSISTENT}
# make a node subdir
# /.statelite/persistent/<nodename>
if [ ! -d ${PERSISTENT}/${ME} ]; then
mkdir -m 755 -p ${PERSISTENT}/${ME}
fi
done
}
# process the litefile table
ProcessLitefile () {
let j=0
for i in `/usr/bin/cat $LITEFILE | /usr/bin/grep $ME`
do
type=`echo $i | /usr/bin/awk -F'|' '{print $2}'`
path=`echo $i | /usr/bin/awk -F'|' '{print $3}'`
# entry list one line per element
ELIST[$j]="$type $path";
let j=j+1;
done
# number of entries(lines) in file
num=${#ELIST[@]}
let i=0
while [ $i -lt $num ]; do
set -- ${ELIST[$i]}
etype=$1
epath=$2
# ex. for /etc/foo the parent is /etc/
parent="`/usr/bin/dirname $epath`/"
let efound=0
let ptype=0
let ppath=0
while [ "$parent" != "//" ]; do
let j=0
while [ $j -lt $num ]; do
set -- ${ELIST[$j]}
jtype=$1
jpath=$2
# see if a parent is also one of the file entries
if [ "$parent" = "$jpath" ]; then
efound=1
ptype=$jtype
ppath=$jpath
break 2
fi
let j=j+1;
done
parent="`/usr/bin/dirname $parent`/"
done
if [ "$efound" = "1" ]; then
# found a parent & child on the list
cantdo=0
# check options
# can't do any child that has parent of ro
if [ "$ptype" = "ro" ]; then
echo "Cannot add child ($epath) when parent ($ppath) has 'ro' option." >>$LOG
cantdo=1
fi
# a persistent parent can't have a ro child
if [ "$ptype" = "persistent" ]; then
if [ "$etype" = "ro" ]; then
echo "Cannot add child ($epath) with 'ro' option when parent ($ppath) has 'persistent' option." >>$LOG
cantdo=1
fi
fi
if [ $cantdo -eq 0 ]; then
# ok - # put the child on into CLIST
cnum=${#CLIST[@]}
CLIST[$cnum]=${ELIST[$i]}
fi
else
# add the parents and the entries with no parents to PLIST
let pfound=0
let pnum=${#PLIST[@]}
let k=0
while [ $k -lt $pnum ]; do
if [ "${PLIST[$k]}" = "${path}" ]; then
pfound=1
fi
let k=k+1
done
if [ "$pfound" = "0" ]; then
# put it into PLIST
let plnum=${#PLIST[@]}
PLIST[$plnum]=${ELIST[$i]}
fi
fi
let i=i+1;
done
plistnum=${#PLIST[@]}
n=0
while [ $n -lt $plistnum ]; do
set -- ${PLIST[$n]}
FindFile ${2} ${1} 0
let n=n+1
done
plistnum=${#CLIST[@]}
m=0
while [ $m -lt $plistnum ]; do
set -- ${CLIST[$m]}
FindFile ${2} ${1} 1
let m=m+1
done
}
# mount the required directories from the server
MountTrees () {
# ex. /.statelite/mnt
if [ ! -d ${MOUNTDIR} ]; then
/usr/bin/mkdir -m 755 -p $MOUNTDIR
fi
for i in `/usr/bin/cat $LITETREE | /usr/bin/grep -v '^#' | /usr/bin/grep $ME`
do
NODE=`echo $i | /usr/bin/awk -F'|' '{print $1}'`
SERV=`echo $i | /usr/bin/awk -F'|' '{print $2}'`
DIR=`echo $i | /usr/bin/awk -F'|' '{print $3}'`
if [ ! -d ${MOUNTDIR}/${SERV}${DIR} ]; then
# ex. /.statelite/mnt/10.2.0.200/etc/
/usr/bin/mkdir -m 755 -p ${MOUNTDIR}/${SERV}${DIR}
fi
MAX=5
TRIES=1
# ex. 10.2.0.200:/etc/ /.statelite/mnt/10.2.0.200/etc/
while ! /usr/sbin/mount $SERV:$DIR ${MOUNTDIR}/${SERV}${DIR}
do
if [ "$TRIES" = "$MAX" ]
then
echo "Cannot mount $i." >/dev/console
break
fi
TRIES=`expr $TRIES + 1`
S=`expr $RANDOM % 20`
echo "Can't mount $SERV:$MNT... Sleeping $S seconds then trying again" >>$LOG
sleep $S
done
done
}
# mount the files or directories as requested
ProcessType () {
MOUNT=$1 # where this is (ex. /.statelite/mnt/10.2.0.200/etc/FScfg)
PATH=$2 # file (ex. /etc/FScfg)
TYPE=$3 # type of file (ex. rw)
isChild=$4 # child = 1, parent = 0
PPATH=`/usr/bin/dirname ${2}` # ex. /etc
case "${3}" in
rw)
# item is mounted from litetree dir or .default location ($1)
# onto local file
# the local name of the file or directory
LOCAL=`echo ${2} | /usr/bin/sed -e 's/\/$//'`
if [ -d ${1} ]; then
# if it's a dir
if [ ! -e ${LOCAL} ]; then
/usr/bin/mkdir -m 755 -p ${LOCAL}
fi
else
# if file
if [ ! -e ${LOCAL} ]; then
FDIR=`/usr/bin/dirname ${2}`
/usr/bin/mkdir -m 755 -p ${FDIR}
/usr/bin/touch ${LOCAL}
fi
fi
# ex. /.statelite/mnt/<server>/etc/lppcfg
SOURCE=`echo ${1} | /usr/bin/sed -e 's/\/$//'`
# make sure we don't get duplicate mounts
/usr/sbin/umount ${LOCAL}>>$LOG > /dev/null > /dev/null 2>&1
echo "/usr/sbin/mount ${SOURCE} ${LOCAL}" >>$LOG
/usr/sbin/mount ${SOURCE} ${LOCAL}>>$LOG 2>&1
;;
persistent)
# the item is copied to the /.statelite/persistent subdir
# from wherever it is found ( $1 above )
# the /.statelite/persistent/blah is then mounted
# over the local /blah
# ex. /.statelite/persistent/compute02/etc
if [ ! -d ${PERSISTENT}/${ME}${PPATH} ]; then
/usr/bin/mkdir -m 755 -p ${PERSISTENT}/${ME}${PPATH}
echo "mkdir -p ${PERSISTENT}/${ME}${PPATH}" >>$LOG
fi
# if the file doesn't exist, then copy it over to persistent
if [ ! -e ${PERSISTENT}/${ME}${2} ]; then
echo "cp -p -r ${1} ${PERSISTENT}/${ME}${2}" >>$LOG
/usr/bin/cp -p -r ${1} ${PERSISTENT}/${ME}${2} 2>&1 >>$LOG
fi
LOCAL=`echo ${2} | /usr/bin/sed -e 's/\/$//'`
SOURCE=`echo ${PERSISTENT}/${ME}${2}`
if [ ! -e ${LOCAL} ]; then
if [ -d ${SOURCE} ]; then
# need to create local dir
echo "mkdir -m 755 -p ${LOCAL}" >>$LOG
/usr/bin/mkdir -m 755 -p ${LOCAL}
else
# need to create local file
FDIR=`/usr/bin/dirname ${2}`
if [ ! -d ${FDIR} ]; then
/usr/bin/mkdir -m 755 -p ${FDIR}
fi
/usr/bin/touch ${LOCAL}
fi
fi
# ex. mount /.statelite/persistent/<nodename>/blah /blah
# note: the dir from the statelite table is mounted over
# /.statelite/persistent
# make sure we don't get duplicate mounts
/usr/sbin/umount ${LOCAL}>>$LOG > /dev/null 2>&1
echo "/usr/sbin/mount ${SOURCE} ${LOCAL}" >>$LOG
/usr/sbin/mount ${SOURCE} ${LOCAL}>>$LOG 2>&1
;;
ro)
# mounted file or dir is overmounted over local version
# $1 - mounted file or directory or default(?)
# $2 - file or dir name
# ex. /etc/lppcfg
LOCAL=`echo ${2} | /usr/bin/sed -e 's/\/$//'`
# ex. /.statelite/mnt/<server>/etc/lppcfg
SOURCE=`echo ${1} | /usr/bin/sed -e 's/\/$//'`
if [ ! -e ${LOCAL} ]; then
if [ -d ${SOURCE} ]; then
# need to create local dir
echo "mkdir -m 755 -p ${LOCAL}" >>$LOG
/usr/bin/mkdir -m 755 -p ${LOCAL}
else
# need to create local file
GDIR=`/usr/bin/dirname ${2}`
if [ ! -d ${GDIR} ]; then
/usr/bin/mkdir -m 755 -p ${GDIR}
fi
/usr/bin/touch ${LOCAL}
fi
fi
# make sure we don't get duplicate mounts
/usr/sbin/umount ${LOCAL}>>$LOG > /dev/null 2>&1
echo "/usr/sbin/mount -o ro ${SOURCE} ${LOCAL}" >>$LOG 2>&1
# ex. mount -o ro /.statelite/mnt/<server>/etc/lppcfg /etc/lppcfg
/usr/sbin/mount -o ro ${SOURCE} ${LOCAL}>>$LOG 2>&1
;;
*)
;;
esac
}
# find a source for the file or directory
FindFile () {
# $1 = Pathname to locate
# $2 = Type of file
# $3 = 0 or 1: 0 means parent, 1 means child
path=$1
type=$2
isChild=$3
FOUND=0
# this assumes the dir are already in priority order in the
# /litetree.table file
for i in `/usr/bin/cat $LITETREE | /usr/bin/grep -v '^#' | /usr/bin/grep $ME`
do
SERVER=`echo $i | /usr/bin/awk -F'|' '{print $2}'`
DIR=`echo $i | /usr/bin/awk -F'|' '{print $3}'`
SRC=`echo ${MOUNTDIR}/${SERVER}${DIR}${path} | /usr/bin/sed -e 's/\/\//\//'`
# ex. SRC = /.statelite/mnt/10.2.0.200/etc/FScfg
# or /.statelite/mnt/10.2.0.200/root/ssh/
if [ -e ${SRC} ]; then
# ok - we found a src for the file or dir
PATHEND=${#path}
CHAREND=`echo ${path} | /usr/bin/cut -c${PATHEND}`
if [ "${CHAREND}" != '/' ] && [ -d ${SRC} ]; then
FOUND=0
continue
fi
if [ "${CHAREND}" = "/" ] && [ -f ${SRC} ]; then
FOUND=0
continue
fi
FOUND=1
ProcessType ${SRC} ${path} ${type} ${isChild}
break
fi
done
# couldn't find SRC so use the value in /.default
# Default behavior is to get from the image
if [ "$FOUND" = "0" ]; then
if [ -e "${DEFAULT}${path}" ]; then
ProcessType ${DEFAULT}${path} ${path} ${type} ${isChild}
else
echo "Could not find ${path}" >>$LOG
fi
fi
}
###########################################################################
# Start / MAIN / main
###########################################################################
# mount the persistent dir - if provided
ProcessStatelite
# mount all the dirs from the litetree table.
MountTrees
# process the litefile table
ProcessLitefile
exit 0