+++ /dev/null
-#!/bin/sh
-
-# Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
-# based on vunify by Jacques Gelinas
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-# This scripts is used to unify the disk space used by vservers
-# It takes various RPM packages and hard link them together so all
-# vservers are sharing the same exact copy of the files.
-# After doing so, it set them immutable, so the vserver can't change them
-
-# This has the following advantages:
-# -You save disk space. If you have 100 vservers, each using 500 megs
-# (common linux server installation), you can unify 90% of that
-# -Memory usage. Since the exact same binary are loaded, including
-# the same shared object, you save some memory and this can increase
-# performance, especially the memory cache usage.
-#
-# On the down side, you are loosing some flexibility. The vserver
-# administrators can't upgrade package as they see fit, since the
-# files are immutable. On the other end, just unifying glibc is probably
-# a win.
-: ${UTIL_VSERVER_VARS:=$(dirname $0)/util-vserver-vars}
-test -e "$UTIL_VSERVER_VARS" || {
- echo "Can not find util-vserver installation; aborting..."
- exit 1
-}
-. "$UTIL_VSERVER_VARS"
-
-if [ $# = 0 ] ; then
- echo vunify [ --undo ] ref-vserver vservers -- packages
-else
- undo=0
- if [ "$1" == "--undo" ] ; then
- undo=1
- shift
- fi
- ref=$1
- shift
- servers=
- while [ "$1" != "" -a "$1" != "--" ]
- do
- servers="$servers $1"
- shift
- done
- if [ "$servers" = "" ] ; then
- echo No vserver specified >&2
- exit 1
- elif [ "$1" != "--" ] ; then
- echo Missing -- marker >&2
- exit 1
- else
- shift
- if [ $# = 0 ] ; then
- echo No package specified >&2
- exit 1
- else
- if [ ! -d $VROOTDIR/$ref/. ] ; then
- echo No vserver $ref >&2
- exit 1
- else
- #echo ref=$ref
- #echo servers=$servers
- #echo packages=$*
- tmpfile=/var/run/vunifi.$$
- rm -f $tmpfile
- echo Extracting list of file to unify in $tmpfile
- for pkg in $*
- do
- $VROOTDIR/$ref/bin/rpm --root $VROOTDIR/$ref -ql --dump $pkg | \
- while read path size mtime md5 \
- mode owner group isconfig isdoc rdev symlink
- do
- if [ "$isconfig" = 0 ] ; then
- echo $path >>$tmpfile
- fi
- done
- done
- for serv in $servers
- do
- if [ "$undo" = 0 ] ; then
- echo Unifying server $serv
- cat $tmpfile | while read file
- do
- if [ ! -d $VROOTDIR/$ref/$file -a ! -L $VROOTDIR/$ref/$file ] ; then
- ln -f $VROOTDIR/$ref/$file $VROOTDIR/$serv/$file
- fi
- done
- cat $tmpfile | while read file
- do
- chattr +i $VROOTDIR/$ref/$file
- done
- else
- echo Differencing server $serv
- cat $tmpfile | while read file
- do
- chattr -i $VROOTDIR/$ref/$file
- if [ ! -d $VROOTDIR/$ref/$file ] ; then
- rm -f $VROOTDIR/$serv/$file
- cp -a $VROOTDIR/$ref/$file $VROOTDIR/$serv/$file
- fi
- done
- fi
- done
- rm -f $tmpfile
- fi
- fi
- fi
-fi
-
git://git.onelab.eu / util-vserver.git / blobdiff