From 1130873aa55c9b0a7e5af48edc44bd6c6fd1f888 Mon Sep 17 00:00:00 2001
From: Jonathan Bauer
Date: Wed, 13 May 2020 11:04:02 +0200
Subject: restructure repo

* remove packager
* move everything from builder/* back to root
---
 packager/.gitignore                          |   1 -
 packager/blacklists/README                   |  15 -
 packager/blacklists/essential/fontcache      |   3 -
 packager/blacklists/essential/linux-base     |  81 ----
 packager/blacklists/essential/linux-extended |   5 -
 packager/blacklists/essential/other-files    |   3 -
 packager/blacklists/essential/policykit      |   2 -
 packager/blacklists/essential/temp-files     |   5 -
 packager/blacklists/essential/tm-scripts     |   1 -
 packager/blacklists/package-managers/apt     |   2 -
 packager/blacklists/package-managers/rpm     |   5 -
 packager/blacklists/package-managers/yast    |   5 -
 packager/blacklists/package-managers/yum     |   1 -
 packager/blacklists/package-managers/zypper  |   2 -
 packager/openslx                             |  43 ---
 packager/openslx.config                      |  18 -
 packager/openslx.functions                   | 543 ---------------------------
 17 files changed, 735 deletions(-)
 delete mode 100644 packager/.gitignore
 delete mode 100644 packager/blacklists/README
 delete mode 100644 packager/blacklists/essential/fontcache
 delete mode 100644 packager/blacklists/essential/linux-base
 delete mode 100644 packager/blacklists/essential/linux-extended
 delete mode 100644 packager/blacklists/essential/other-files
 delete mode 100644 packager/blacklists/essential/policykit
 delete mode 100644 packager/blacklists/essential/temp-files
 delete mode 100644 packager/blacklists/essential/tm-scripts
 delete mode 100644 packager/blacklists/package-managers/apt
 delete mode 100644 packager/blacklists/package-managers/rpm
 delete mode 100644 packager/blacklists/package-managers/yast
 delete mode 100644 packager/blacklists/package-managers/yum
 delete mode 100644 packager/blacklists/package-managers/zypper
 delete mode 100755 packager/openslx
 delete mode 100644 packager/openslx.config
 delete mode 100644 packager/openslx.functions

(limited to 'packager')

diff --git a/packager/.gitignore b/packager/.gitignore
deleted file mode 100644
index f4ed9bc4..00000000
--- a/packager/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-clones
diff --git a/packager/blacklists/README b/packager/blacklists/README
deleted file mode 100644
index ed3fe459..00000000
--- a/packager/blacklists/README
+++ /dev/null
@@ -1,15 +0,0 @@
-This directory contains blacklists of files and directories that
-should be excluded when cloning stage4 of a remote system. The
-blacklists are split into groups, represented by sub-directories.
-They contain one or more text files representing blacklists in rsync
-"--exclude-from" format.
-
-There is a group called "essential", containg blacklists for essential
-files and dirs that you always want to exclude from being cloned.
-Other directories are create for specific software packages, like
-gnome, or kde.
-
-For inclusion of desktop environments like Gnome or KDE a substructure
-(subdirectory) called desktop-sessions was introduced. The files /
-directories in there should describe only includes ("+ ....") to provide
-files needed for a desktop environment.
diff --git a/packager/blacklists/essential/fontcache b/packager/blacklists/essential/fontcache
deleted file mode 100644
index 13d60d44..00000000
--- a/packager/blacklists/essential/fontcache
+++ /dev/null
@@ -1,3 +0,0 @@
-+ /var/cache/fontconfig
-+ /var/cache/fontconfig/*
-
diff --git a/packager/blacklists/essential/linux-base b/packager/blacklists/essential/linux-base
deleted file mode 100644
index 2c3ec439..00000000
--- a/packager/blacklists/essential/linux-base
+++ /dev/null
@@ -1,81 +0,0 @@
-- /cdrom/*
-- /dev/*
-- /adm/*
-- /afs/*
-- /bfg/*
-- /clustersw/*
-- /cvmfs/*
-- /gridsw/*
-- /storage/*
-
-# This is where the bind-mount of mltk resides...
-- /export/*
-- /etc/*ppp*
-- /etc/*pptp*
-- /etc/dhcp*
-- /etc/exports*
-- /etc/fstab
-#- /etc/group
-- /etc/group-
-- /etc/gshadow
-- /etc/gshadow-
-- /etc/hostname
-- /etc/hosts
-#- /etc/inputrc
-- /etc/issue.net
-# Always include ldconfig/cache of full system:
-+ /etc/ld.so.**
-#- /etc/localtime
-#- /etc/login.defs
-#- /etc/mtab
-#- /etc/mtab.*
-+ /etc/sysconfig/network-scripts/ifcfg-lo
-- /etc/sysconfig/network-scripts/ifcfg-*
-- /etc/networks
-#- /etc/passwd
-- /etc/passwd-
-#- /etc/resolv.conf
-#- /etc/resolvconf/
-#- /etc/shadow
-- /etc/shadow-
-#- /lib/modules/
-- /lost+found/
-- /media/*
-- /mnt/*
-- /opt/openslx
-- /proc/*
-- /run/*
-#- /srv/
-- /sys/*
-- /tmp/*
-#- /usr/src/
-+ /var/backup/**/
-- /var/backup/**
-+ /var/cache/**/
-- /var/cache/**
-+ /var/crash/**/
-- /var/crash/**
-+ /var/empty/**/
-- /var/empty/**
-+ /var/lock/**/
-- /var/lock/**
-+ /var/log/**/
-- /var/log/**
-+ /var/mail/**/
-- /var/mail/**
-#+ /var/spool/**/
-#- /var/spool/**
-+ /var/spool/torque/*
-- /var/tmp/*
-+ /var/tmp/*guestfs*
-- /var/lib/nova/instances/*
-- /var/lib/libvirt
-
-
-
-## Interfering binaries/links
-#- /sbin/shutdown
-#- /sbin/reboot
-#- /sbin/poweroff
-#- /sbin/halt
-##- /bin/sh
diff --git a/packager/blacklists/essential/linux-extended b/packager/blacklists/essential/linux-extended
deleted file mode 100644
index 90dcdca7..00000000
--- a/packager/blacklists/essential/linux-extended
+++ /dev/null
@@ -1,5 +0,0 @@
-- /home/*
-- /root/*
-#+ /root/.bash*
-#+ /root/.ssh
-- /etc/cups
diff --git a/packager/blacklists/essential/other-files b/packager/blacklists/essential/other-files
deleted file mode 100644
index d35a5736..00000000
--- a/packager/blacklists/essential/other-files
+++ /dev/null
@@ -1,3 +0,0 @@
-- .svn
-- .git
-- *.gvfs
diff --git a/packager/blacklists/essential/policykit b/packager/blacklists/essential/policykit
deleted file mode 100644
index 2f42c0e0..00000000
--- a/packager/blacklists/essential/policykit
+++ /dev/null
@@ -1,2 +0,0 @@
-#- /usr/share/pol*/actions/org.freedesktop.upower.*
-
diff --git a/packager/blacklists/essential/temp-files b/packager/blacklists/essential/temp-files
deleted file mode 100644
index 50955d08..00000000
--- a/packager/blacklists/essential/temp-files
+++ /dev/null
@@ -1,5 +0,0 @@
-- *~
-- *.bak
-- *.old
-- *.pid
-- *.tmp
diff --git a/packager/blacklists/essential/tm-scripts b/packager/blacklists/essential/tm-scripts
deleted file mode 100644
index 393effea..00000000
--- a/packager/blacklists/essential/tm-scripts
+++ /dev/null
@@ -1 +0,0 @@
-- **/tm-scripts
diff --git a/packager/blacklists/package-managers/apt b/packager/blacklists/package-managers/apt
deleted file mode 100644
index 5e019138..00000000
--- a/packager/blacklists/package-managers/apt
+++ /dev/null
@@ -1,2 +0,0 @@
-+ /var/cache/apt/archives/partial/**
-
diff --git a/packager/blacklists/package-managers/rpm b/packager/blacklists/package-managers/rpm
deleted file mode 100644
index 0527ee75..00000000
--- a/packager/blacklists/package-managers/rpm
+++ /dev/null
@@ -1,5 +0,0 @@
-- *.rpmnew
-- *.rpmsave
-- /etc/*rpmnew
-- /etc/*rpmorig
-- /etc/*rpmsave
diff --git a/packager/blacklists/package-managers/yast b/packager/blacklists/package-managers/yast
deleted file mode 100644
index 9de1ec05..00000000
--- a/packager/blacklists/package-managers/yast
+++ /dev/null
@@ -1,5 +0,0 @@
-- /var/lib/YaST2/you/mnt/*
-- /var/lib/YaST2/backup_boot_sectors
-- /etc/*YaST2save
-- *.YaST2save
-
diff --git a/packager/blacklists/package-managers/yum b/packager/blacklists/package-managers/yum
deleted file mode 100644
index 8b137891..00000000
--- a/packager/blacklists/package-managers/yum
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/packager/blacklists/package-managers/zypper b/packager/blacklists/package-managers/zypper
deleted file mode 100644
index fbab85d7..00000000
--- a/packager/blacklists/package-managers/zypper
+++ /dev/null
@@ -1,2 +0,0 @@
-- /var/lib/zypp
-
diff --git a/packager/openslx b/packager/openslx
deleted file mode 100755
index 6845f9ba..00000000
--- a/packager/openslx
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/bin/bash
-# ------------------------------------------------------------------------------
-#
-#                        OpenSLX Toolkit Next Gen
-#
-# ------------------------------------------------------------------------------
-#
-# The next generation toolkit to build a stateless linux system bootable
-# over the network. Composed of dracut-built initramfs and a full system clone.
-#
-# ------------------------------------------------------------------------------
-#
-#                                Main Code
-#
-# ------------------------------------------------------------------------------
-
-declare -rg ARG0="$0"
-declare -rg SELF="$(readlink -f "${ARG0}")"
-declare -rg ROOT_DIR="$(dirname "${SELF}")"
-declare -rg SELF_PID="$$"
-
-# let's keep it simple for now, just source our config/functions file
-. "${ROOT_DIR}/${ARG0}".functions || perror "Could not source functions."
-. "${ROOT_DIR}/${ARG0}".config || perror "Could not source config."
-
-# root check
-if [ "$(id -u)" -ne 0 ]; then
-	banner
-	perror "ERROR: You need to be root to use this toolkit."
-else
-	banner
-fi
-
-# setup trap
-trap do_cleanup SIGINT SIGTERM SIGUSR1 EXIT
-
-# read params
-read_params $@
-
-# react to given action
-process_action
-
-exit 0
diff --git a/packager/openslx.config b/packager/openslx.config
deleted file mode 100644
index 985ace1a..00000000
--- a/packager/openslx.config
+++ /dev/null
@@ -1,18 +0,0 @@
-# default options for rsync
-DEFAULT_RSYNC_OPTS="--acls \
-	--hard-links \
-	--xattrs \
-	--archive \
-	--delete \
-	--delete-excluded \
-	--numeric-ids \
-	--verbose"
-
-# default options used by rsync
-DEFAULT_RSYNC_RSH="ssh -c aes256-ctr -o StrictHostKeyChecking=no"
-
-# default size for the qcow2-container
-DEFAULT_CONTAINER_SIZE="20G"
-
-# default filesystem type for the qcow2-container
-DEFAULT_CONTAINER_FILESYSTEM="xfs"
diff --git a/packager/openslx.functions b/packager/openslx.functions
deleted file mode 100644
index fb32a231..00000000
--- a/packager/openslx.functions
+++ /dev/null
@@ -1,543 +0,0 @@
-# ------------------------------------------------------------------------------
-#
-#                          Functions for OpenSLX-NG
-#
-# ------------------------------------------------------------------------------
-#
-# check if we have our environment variables to check
-# if we actually got sourced by the main script
-if [ -z "${SELF_PID}" -o  -z "${ROOT_DIR}" ]; then
-	# not using perror, since we probably don't have it.
-	echo "Neither SELF_PID nor ROOT_DIR is set. Was this included by OpenSLX-NG?"
-	exit 1
-fi
-
-# ------------------------------------------------------------------------------
-#
-#                          General helper functions
-#
-# ------------------------------------------------------------------------------
-banner () {
-	echo -e "\033[38;5;196m\t"'                                    .__          '
-	echo -e "\033[38;5;196m\t"'  ____ ______   ____   ____   _____|  | ___  ___ '
-	echo -e "\033[38;5;202m\t"' /  _ \\\\____ \\_/ __ \\ /    \\ /  ___/  | \\  \\/  / '
-	echo -e "\033[38;5;208m\t"'(  <_> )  |_> >  ___/|   |  \\\\___ \\|  |__>    <  '
-	echo -e "\033[38;5;214m\t"' \\____/|   __/ \\___  >___|  /____  >____/__/\\_ \\ '
-	echo -e "\033[38;5;220m\t"'       |__|        \\/     \\/     \\/           \\/ '
-	echo -e "\033[38;5;220m\t"
-	echo -e "\033[38;5;226m\t                     ** OpenSLX Project // 2015 **"
-	echo -e "\033[38;5;232m\t                        http://lab.openslx.org/"
-	echo -e "\033[00m"
-}
-
-pinfo() {
-	echo -e "\033[38;5;10m[info]\033[0m $@"
-}
-
-pwarning() {
-	echo -e "\033[38;5;11m[warning]\033[0m $@"
-}
-
-perror() {
-	echo -e "\033[38;5;9m[error]\033[0m $@"
-	kill "$SELF_PID"
-	exit 1
-}
-
-# accepts one argument to be printed as a warning before dumping the help
-print_usage() {
-	[ -n "$1" ] && pwarning "$1"
-	pinfo "USAGE:"
-	pinfo "$ARG0 <action> <actions_params>"
-	pinfo "\t\tActions: '--clone', '--package', '--export', 'update'"
-	pinfo ""
-	pinfo "CLONING:      rsync remote host to local directory"
-	pinfo "$ARG0 --clone --host <host> [--syncdir <path>]"
-	pinfo "\t\tIf not specified, --syncdir = './clones/<host>/stage4'"
-	pinfo ""
-	pinfo "PACKAGING:    pack local rsync directory as qcow2-container"
-	pinfo "$ARG0 --package --host <host> [--container <path>] [--syncdir <dir>]"
-	pinfo "\t\tIf <container> is not specified, --container = './clones/<host>/stage4.qcow2'"
-	pinfo "\t\tIf <syncdir> is not specified, --syncdir = './clones/<host>/stage4'"
-	pinfo ""
-	pinfo "EXPORTING:    rsync remote host to a new qcow2-container"
-	pinfo "$ARG0 --export --host <host> [--container <path>] [--syncdir <dir>]"
-	pinfo "\t\tIf <container> is not specified, --container = './clones/<host>/stage4.qcow2'"
-	pinfo ""
-	pinfo "UPDATING:     rsync remote host to an existing qcow2-container"
-	pinfo "$ARG0 --update --host <host> [--container <path>]"
-	pinfo "\t\tIf <container> is not specified, --container = './clones/<host>/stage4.qcow2'"
-	kill "$SELF_PID"
-	exit 1
-}
-
-# helper to parse the command line arguments and fill the environment
-# with the parameters given. Since the fallbacks for those variables
-# are only dependent on the selected action, we will also post-process
-# them to make sure they are set when leaving this function!
-read_params() {
-	# initialize global variables
-	declare -g FORCE=0
-	unset ACTION REMOTE_HOST CONTAINER_PATH RSYNC_TARGET
-
-	# handle rest of arguments
-	while [ "$#" -gt "0" ]; do
-		local PARAM="$1"
-		shift
-
-		# options to current target
-		if [[ "$PARAM" == --* ]]; then
-			case "$PARAM" in
-				--clone)
-					declare -rg ACTION="CLONE"
-					;;
-				--package)
-					declare -rg ACTION="PACKAGE"
-					;;
-				--export)
-					declare -rg ACTION="EXPORT"
-					;;
-				--update)
-					declare -rg ACTION="UPDATE"
-					;;
-				--host)
-					if [ -z "$1" ]; then 
-						print_usage "'--host' requires a host as parameter."
-					else
-						if [[ "$1" == --* ]]; then
-							local _msg="A host should not start with '--'."
-							_msg="$_msg Parameter for '--host' missing?"
-							perror $_msg 
-						fi
-						declare -rg REMOTE_HOST="$1"
-						shift
-					fi
-					continue
-					;;
-				--container)
-					if [ -z "$1" ]; then 
-						print_usage "'--container' requires a path as parameter."
-					else
-						if [[ "$1" == --* ]]; then
-							local _msg="A path should not start with '--'."
-							_msg="$_msg Parameter for '--container' missing?"
-							perror $_msg 
-						fi
-						declare -rg CONTAINER_PATH="$1"
-						shift
-					fi
-					continue
-					;;
-				--syncdir)
-					if [ -z "$1" ]; then
-						print_usage "'--syncdir' requires a path as parameter."
-					else
-						if [[ "$1" == --* ]]; then
-							local _msg="A path should not start with '--'."
-							_msg="$_msg Parameter for '--syncdir' missing?"
-							perror $_msg 
-						fi
-						declare -rg RSYNC_TARGET="$1"
-						shift
-					fi
-					continue
-					;;
-				--force)
-					declare -rg FORCE=1
-					;;
-				*)
-					print_usage "Unknown flag: $PARAM"
-					;;
-			esac
-			continue
-		fi
-	done
-	# done parsing the arguments, exit if no action given
-	[ -z "$ACTION" ] && \
-		print_usage "No action given"
-
-	# now check for existance of variables
-	# and use fallbacks when possible if they were not specified
-
-	# REMOTE_HOST valid? always needed!
-	[ -z "$REMOTE_HOST" ] && \
-		perror "REMOTE_HOST not set. Use '--host'."
-	check_host "$REMOTE_HOST" || \
-		perror "'$REMOTE_HOST' is neither an IP nor a known hostname."
-	# REMOTE_HOST valid - set build directory for the rest of the operations
-	declare -rg BUILD_DIR="${ROOT_DIR}/clones/${REMOTE_HOST}"
-	mkdir -p "${BUILD_DIR}" || perror "Could not create '${BUILD_DIR}'."
-
-	# RSYNC_TARGET needs special care
-	if [ -z "$RSYNC_TARGET" ]; then
-		# none given - use fallbacks
-		if [ "x$ACTION" == "xCLONE" ]; then
-			# use default path when cloning, no need for CONTAINER_MNT
-			pwarning "RSYNC_TARGET not set, using: '${BUILD_DIR}/stage4/'."
-			declare -rg RSYNC_TARGET="${BUILD_DIR}/stage4"
-		else
-			# we always want CONTAINER_MNT here
-			declare -rg CONTAINER_MNT="$(mktemp -d)"
-			[ -z "${CONTAINER_MNT}" ] && \
-				perror "Could not create temporary directory for mounting the container."
-			add_cleanup rmdir "${CONTAINER_MNT}"
-			# RSYNC_TARGET depends on the action at this point
-			if [ "x$ACTION" == "xPACKAGE" ]; then
-				# use default path when packaging
-				declare -rg RSYNC_TARGET="${BUILD_DIR}/stage4"
-			elif [ "x$ACTION" == "xUPDATE" -o "x$ACTION" == "xEXPORT" ]; then
-				# for action update/export, we want to sync to the mounted container
-				# so create a temporary directory for the mount point that we'll use later
-				declare -rg RSYNC_TARGET="${CONTAINER_MNT}"
-			fi
-		fi
-	fi
-
-	# CONTAINER_PATH valid?
-	if [ -z "$CONTAINER_PATH" ]; then
-		# use default path: ${BUILD_DIR}/stage4.qcow2
-		pwarning "CONTAINER_PATH not set. Using '${BUILD_DIR}/stage4.qcow2'."
-		declare -rg CONTAINER_PATH="${BUILD_DIR}/stage4.qcow2"
-	fi
-	# so from now on REMOTE_HOST, RSYNC_TARGET, CONTAINER_PATH are set (and read-only).
-}
-process_action() {
-	if [ "x$ACTION" == "xCLONE" ]; then
-		clone_host || perror "Cloning stage4 failed with: $?"
-	elif [ "x$ACTION" == "xPACKAGE" ]; then
-		pack_clone || perror "Packing as QCoW2 failed with: $?"
-	elif [ "x$ACTION" == "xEXPORT" ]; then
-		export_host || perror "Exporting failed with: $?"
-	elif [ "x$ACTION" == "xUPDATE" ]; then
-		update_container || perror "Updating failed with: $?"
-	else
-		print_usage "No action given."
-	fi
-	return 0
-}
-
-# wrapper to package a cloned stage4 as a qcow2 container
-#	- creates empty container at CONTAINER_PATH
-#	- mounts it to RSYNC_TARGET
-#	- copy RSYNC_TARGET
-pack_clone() {
-	create_container
-	mount_container
-	copy_to_container
-}
-# wrapper to update an existing container
-#	- mounts it to RSYNC_TARGET
-#	- clone host there
-update_container() {
-	mount_container
-	clone_host
-}
-# wrapper to export a host directly to a container
-#	- create en empty qcow2 container at CONTAINER_PATH
-#	- mount it to RSYNC_TARGET
-#	- clone host there
-export_host() {
-	create_container
-	mount_container
-	clone_host
-}
-# ------------------------------------------------------------------------------
-#
-#                          Stage4 related functions
-#
-# ------------------------------------------------------------------------------
-#
-# Helper to generate a stage4 export for a remote machine per rsync.
-# Usage:
-#			clone_host
-#
-# Note: this functions requires REMOTE_HOST and RSYNC_TARGET to be set.
-clone_host() {
-	# check if RSYNC_TARGET is valid
-	if [ -d "${RSYNC_TARGET}" ]; then
-		# does it have the '.stage4' flag? skip this check when exporting directly
-		[ "x$ACTION" != "xEXPORT" ] && [ ! -e "${RSYNC_TARGET}/.stage4" ] && \
-			perror "'${RSYNC_TARGET}' exists, but no '.stage4' flag found. Refusing to rsync there."
-			#touch $RSYNC_TARGET/.stage4 && exit 0
-	else
-		# not a directory, create it and set the .stage4 flag
-		mkdir -p "${RSYNC_TARGET}" || perror "Could not create '${RSYNC_TARGET}'."
-	fi
-
-	local EXCLUDE="$BUILD_DIR/exclude-stage4"
-	local INCLUDE="$BUILD_DIR/include-stage4"
-
-	pinfo "Building rsync include/exclude files for building stage4...."
-	echo "## Exclude file for stage4 of $REMOTE_HOST" > "$EXCLUDE"
-	echo "## Include file for stage4 of $REMOTE_HOST" > "$INCLUDE"
-	for FILE in $(find "${ROOT_DIR}"/blacklists/*/ -type f); do
-		echo "## From $FILE" >> "$EXCLUDE"
-		echo "## From $FILE" >> "$INCLUDE"
-		grep '^-' "$FILE" >> "$EXCLUDE"
-		grep '^+' "$FILE" >> "$INCLUDE"
-	done
-
-	# prepare rsync's general options
-	local RSYNC_OPTS="${DEFAULT_RSYNC_OPTS}"
-	[ -z "${RSYNC_OPTS}" ] && \
-		RSYNC_OPTS="
-			--acls \
-			--hard-links \
-			--xattrs \
-			--archive \
-			--delete \
-			--delete-excluded \
-			--numeric-ids
-		"
-	# prepare rsync's remote shell options
-	local RSYNC_RSH="$DEFAULT_RSYNC_RSH"
-	[ -z "${RSYNC_RSH}" ] && RSYNC_RSH="ssh -c blowfish -oStrictHostKeyChecking=no"
-	local RSYNC_SOURCE="root@$REMOTE_HOST:/"
-
-	# if something goes wrong during rsync, we need to recreate the .stage4 flag
-	add_cleanup touch ${RSYNC_TARGET}/.stage4
-	# run rsync with the exclude/include lists created earlier
-	cat "$INCLUDE" "$EXCLUDE" | \
-		rsync ${RSYNC_OPTS} \
-				--exclude-from=- \
-            --rsh "${RSYNC_RSH}" \
-				"${RSYNC_SOURCE}" \
-				"${RSYNC_TARGET}"
-
-	local -i rsync_ret=$?
-	if [ "x$rsync_ret" != "x0" ]; then
-		perror "rsync from '${RSYNC_SOURCE}' to '${RSYNC_TARGET}' failed."
-	fi
-	touch "${RSYNC_TARGET}/.stage4"
-	# make sure everything gets flushed
-	sync
-	pinfo "Cloning '${REMOTE_HOST}' to '${RSYNC_TARGET}' succeeded."
-}
-
-# Helper to create the empty container at CONTAINER_PATH
-create_container() {
-	# CONTAINER_PATH valid?
-	[ -d "${CONTAINER_PATH}" ] && perror "Path to container can not be a directory!"
-	if [ -f "${CONTAINER_PATH}" ]; then
-		if [ $FORCE -eq 0 ]; then
-			perror "Container file already exists. Use '--force' to overwrite it."
-		else
-			# force removal
-			rm -f "${CONTAINER_PATH}" || perror "Could not remove '${CONTAINER_PATH}'"
-			pinfo "Removed old '${CONTAINER_PATH}'."
-		fi
-	fi
-
-	# which size for the qcow2 container?
-	local CONTAINER_SIZE="${DEFAULT_CONTAINER_SIZE}"
-	[ -z "${CONTAINER_SIZE}" ] && CONTAINER_SIZE="20G"
-
-	# so far so good
-	pinfo "Creating qcow2-container '${CONTAINER_PATH}'"
-	qemu-img create -f qcow2 "${CONTAINER_PATH}" "${CONTAINER_SIZE}" || \
-		perror "qemu-img create failed with: $?"
-	# now expose it as a loop device
-	expose_container
-	# filesystem for the qcow2 container?
-	local CONTAINER_FILESYSTEM="${DEFAULT_CONTAINER_FILESYSTEM}"
-	[ -z "${CONTAINER_FILESYSTEM}" ] && CONTAINER_FILESYSTEM="xfs"
-	# check if we have that mkfs helper
-	which "mkfs.${CONTAINER_FILESYSTEM}" || \
-		perror "Could not find 'mkfs.${CONTAINER_FILESYSTEM}'. Install it and retry." 
-
-	pinfo "Creating '${CONTAINER_FILESYSTEM}' filesystem on '${CONTAINER_PATH}'..."
-	mkfs."${CONTAINER_FILESYSTEM}" "${LOOPED_NBD_DEV}" || perror "mkfs failed with: $?"
-	return 0
-}
-
-# Helper exposing the container as a loop device
-expose_container() {
-	[ -z "${CONTAINER_PATH}" ] && \
-		perror "Internal error - CONTAINER_PATH not set but should be! Check read_params()"
-	
-	# find usable nbd device
-	declare -rg NBD_DEV="$(find_free_nbd)"
-	[ -n "${NBD_DEV}" ] || perror "Could not find usable NBD device."
-	[ -b "${NBD_DEV}" ] || perror "'${NBD_DEV}' is not a block device!"
-	pinfo "Connecting '${CONTAINER_PATH}' to '${NBD_DEV}'"
-
-	qemu-nbd -c "${NBD_DEV}" "${CONTAINER_PATH}" || \
-		perror "qemu-nbd failed with: $?"
-	add_cleanup disconnect_nbd
-	# expose as a loop device
-	declare -rg LOOPED_NBD_DEV="$(losetup --find)"
-	losetup "${LOOPED_NBD_DEV}" "${NBD_DEV}" || \
-		perror "Loop device setup for '${NBD_DEV}' failed with: $?"
-	add_cleanup disconnect_loop
-	return 0
-}
-
-# Helper to mount CONTAINER_PATH to CONTAINER_MNT through expose_container
-mount_container() {
-	[ -z "${CONTAINER_MNT}" ] && \
-		perror "Internal error - CONTAINER_MNT not set but should be! Check read_params()"
-
-	# connect container to a loop device first, if it wasnt already done
-	[ -z "${LOOPED_NBD_DEV}" ] && expose_container
-	# lets be safe...
-	[ -z "${LOOPED_NBD_DEV}" ] && \
-		perror "Internal error - LOOPED_NBD_DEV not set but should be! Check expose_container()"
-	
-	# now we got everything, mount it
-	pinfo "Mounting '${LOOPED_NBD_DEV}' to '${CONTAINER_MNT}'..."
-	mount "${LOOPED_NBD_DEV}" "${CONTAINER_MNT}" \
-		|| perror "Mount failed with: $?"
-	add_cleanup umount_container
-	return 0
-}
-
-# helper to copy the content of RSYNC_TARGET to CONTAINER_MNT
-copy_to_container() {
-	[ -z "${RSYNC_TARGET}" ] && \
-		perror "Internal error - RSYNC_TARGET not set but should be!"
-	[ -z "${CONTAINER_MNT}" ] && \
-		perror "Internal error - CONTAINER_MNT not set but should be!"
-	# sanity checks
-	is_dir_empty "$RSYNC_TARGET" && \
-		perror "'$RSYNC_TARGET' appears to be empty. Did you clone?"
-	# check for '.stage4' flag in the directory, indicating we cloned there
-	if [ ! -e "${RSYNC_TARGET}/.stage4" ]; then
-		perror "No '.stage4' flag found in '${RSYNC_TARGET}'." \
-					"Was this cloned properly?"
-	fi
-	# copy files from the stage4 directory to the mounted qcow2-container
-	pinfo "Copying '${RSYNC_TARGET}' to '${CONTAINER_MNT}'..."
-	rsync -avAHX "${RSYNC_TARGET}"/ "${CONTAINER_MNT}"/ \
-		|| perror "Rsync failed with: $?"
-	#make sure everything is flushed
-	sync && return 0
-}
-
-
-###############################################################################
-#
-#
-#
-###############################################################################
-# helper to find an unused nbd device
-# Usage:
-#			find_free_nbd
-# Echoes the name of the free device to stdout, empty string otherwise.
-find_free_nbd() {
-	local nbd_size=0
-	for nbd_id in {0..15}; do
-		[ -b "/dev/nbd${nbd_id}" ] || continue
-		[ -r "/sys/block/nbd${nbd_id}/size" ] || continue
-		nbd_size=$(cat /sys/block/nbd${nbd_id}/size)
-		[ $nbd_size -eq 0 ] && echo "/dev/nbd${nbd_id}" && break
-	done
-	echo ""
-}
-
-# helper to validate an ip
-# Usage:
-#			valid_ip <ip>
-# Returns 0 if valid, 1 otherwise.
-valid_ip() {
-    local  ip=$1
-    local  stat=1
-
-    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
-        OIFS=$IFS
-        IFS='.'
-        ip=($ip)
-        IFS=$OIFS
-        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
-            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
-        stat=$?
-    fi
-    return $stat
-}
-
-# helper to check whether a given host is valid
-# Usage:
-#			check_host <hostname|ip>
-# Returns 0 if valid, 1 otherwise
-check_host() {
-	local HOST="$1"
-	[ -z "$HOST" ] && return 1
-	# check if its a valid IP or a valid hostname
-	valid_ip "$HOST" && return 0
-	host -W 2 "$HOST" && return 0
-	# still here? then fail
-	return 1
-}
-
-# helper to check if a dir is empty or not
-# Usage:
-#			dir_empty <dir>
-# Returns 0 if empty, 1 otherwise
-is_dir_empty() {
-	[ $# -ne 1 ] && perror "$0 requires directory as paramter, none given."
-	local _dir="$1"
-	[ -d "$_dir" ] || return 1
-	[ -n "$(ls -A $_dir)" ] && return 1 || return 0
-}
-
-# helper to ask user for confirmation
-# Usage:
-#			user_confirm
-# Return 0 if confirmed, 1 otherwise
-user_confirm() {
-	[ $# -ne 1 ] && perror "$0 requires the question as first argument."
-	pinfo "$1 [Y/n]"
-	local _input
-	read _input
-	[ "x${_input}" == "x" -o "x${_input}" == "xy" ] && return 0 || return 1
-}
-
-###############################################################################
-#
-# CLEANUP FUNCTIONS
-#
-###############################################################################
-# indexed array for cleanup commands
-declare -ag cleanup_commands
-
-# function to add a cleanup command to be executed when the program exits
-add_cleanup() {
-	# get current command count
-	local -i count="${#cleanup_commands[*]}"
-	cleanup_commands[$count]="$*"
-}
-
-# function trapped to EXIT, SIGINT, SIGTERM
-# do the cleanup in FILO style
-do_cleanup() {
-	trap '' SIGINT SIGTERM EXIT	# from now on, ignore INT and TERM
-	for i in $(seq $(( ${#cleanup_commands[*]} - 1 )) -1 0); do
-		eval ${cleanup_commands[$i]}
-	done
-}
-
-# Helper to umount + disconnect the container from all the devices
-umount_container() {
-	[ -z "${CONTAINER_MNT}" ] && \
-		perror "CONTAINER_MNT not set - is it really mounted?"
-	# sync?
-	umount -l "${CONTAINER_MNT}" || \
-		perror "Failed to umount '${CONTAINER_MNT}'."
-#	rmdir "${CONTAINER_MNT}" || \
-#		pwarning "Could not remove '${CONTAINER_MNT}'."
-}
-
-# Helper to disconnect from loop device
-disconnect_loop() {
-	[ -z "${LOOPED_NBD_DEV}" ] && \
-		perror "Container not connected to a loop device?"
-	losetup -d "${LOOPED_NBD_DEV}" ||\
-		perror "Could not disconnect loop device '${LOOPED_NBD_DEV}'."
-}
-# Helper to disconnect from nbd device
-disconnect_nbd() {
-	[ -z "${NBD_DEV}" ] && \
-		perror "Container does not seem to be connected to a NBD device?"
-	qemu-nbd -d "${NBD_DEV}" || \
-		perror "Could not disconnect '${CONTAINER_PATH}' from '${NBD_DEV}'."
-}
-
-- 
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