# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
#
# this handler will save various reports of vital system information.
# by default, all the reports are saved in /var/backups.
#
# (1) a capture of the debconf package selection states. This file
#     can be used to restore the answers to debconf questions for
#     packages that you will be installing through (2) below. To
#     do this, run: "debconf-set-selections < debconfsel.txt"
#
# (2) a list of all the packages installed and removed.
#     this file can be used to restore the state of installed packages
#     by running "dpkg --set-selections < dpkg-selections.txt and
#     then run "apt-get -u dselect-upgrade". If you have the
#     debconf-set-selections file from (1), you should restore those first.
#
# (3) the partition table of all disks.
#     this partition table can be used to format another disk of
#     the same size. this can be handy if using software raid and
#     you have a disk go bad. just replace the disk and partition it
#     by running "sfdisk /dev/sdb < partitions.sdb.txt"
#     (MAKE SURE YOU PARTITION THE CORRECT DISK!!!)
#
# (4) hardware information.
#     write to a text file the important things which hwinfo can gleen.
#
# (5) the LUKS header of every LUKS block device, if option luksheaders
#     is enabled.
#     in case you (have to) scramble such a LUKS header (for some time),
#     and restore it later by running "dd if=luksheader.sda2.bin of=/dev/sda2"
#     (MAKE SURE YOU PASS THE CORRECT DEVICE AS of= !!!)
#
# (6) LVM metadata for every detected volume group, if "lvm = yes"
#
# (7) a copy of each device's MBR, if "mbr = yes". A master boot record
#     (MBR) is the 512-byte boot sector that is the first sector of a
#     partitioned data storage device of a hard disk. To restore the MBR
#     one could do something like: dd if=sda.mbr of=/dev/sda
#     (MAKE SURE YOU PASS THE CORRECT DEVICE AS of= !!!)
#     WARNING: Restoring the MBR with a mismatching partition table will
#     make your data unreadable and nearly impossible to recover
#
# (8) a copy of the BIOS, if "bios = yes" and flashrom is installed

if [ -f /etc/debian_version ]
then
   os=debian
   debug "Debian detected"
   osversion="/etc/debian_version"
elif [ -f /etc/redhat-release ]
then
   os=redhat
   debug "Redhat detected"
   osversion="/etc/redhat-release"
elif [ -f /etc/SuSE-release ]
then
   os=suse
   debug "SuSE detected"
   osversion="/etc/SuSE-release"
else
   warning "Unknown OS detected!"
fi

getconf parentdir /var/backups
getconf packages yes
getconf dosfdisk yes
getconf dohwinfo yes

if [ ! -d $parentdir ]; then
   mkdir -p $parentdir
fi

if [ "$os" = "debian" ]
then
   getconf packagesfile $parentdir/dpkg-selections.txt
   getconf packagemgr   `which dpkg`
   getconf packagemgroptions ' --get-selections *'
   getconf selectionsfile $parentdir/debconfsel.txt
   getconf debconfgetselections `which debconf-get-selections`
elif [ "$os" = "redhat" ]
then
   getconf packagesfile  $parentdir/rpmpackages.txt
   getconf packagemgr   `which rpm`
   getconf packagemgroptions   ' -qa '

   getconf SYSREPORT `which sysreport`
   getconf sysreport_options ' -norpm '
elif [ "$os" = "suse" ]
then
   getconf packagesfile  $parentdir/rpmpackages.txt
   getconf packagemgr   `which rpm`
   getconf packagemgroptions   ' -qa '
else
   getconf packagesfile $parentdir/unknownOS.txt
fi
packagemgroptions="${packagemgroptions//__star__/*}"

getconf partitions yes
getconf partitionsfile $parentdir/partitions.__star__.txt

getconf hardware yes
getconf hardwarefile $parentdir/hardware.txt

getconf sysreport yes
getconf sysreportfile $parentdir/sysreport.txt

getconf SFDISK `which sfdisk`
getconf HWINFO `which hwinfo`
getconf LSBLK `which lsblk`
getconf sfdisk_options ""
getconf hwinfo_options ""

getconf CRYPTSETUP `which cryptsetup`
getconf DD `which dd`
getconf luksheaders no
getconf luksheadersfile $parentdir/luksheader.__star__.bin

getconf VGS `which vgs`
getconf VGCFGBACKUP `which vgcfgbackup`
getconf lvm no

getconf mbr no
getconf mbrfile $parentdir/mbr.__star__.bin

getconf FLASHROM `which flashrom`
getconf bios no

getconf vsnames all

# If vservers are configured, check that the ones listed in $vsnames are running.
usevserver=no
if [ $vservers_are_available = yes ]; then
   if [ "$vsnames" = all ]; then
      vsnames="$found_vservers"
   fi
   if ! vservers_running "$vsnames" ; then
      fatal "At least one of the vservers listed in vsnames ($vsnames) is not running."
   fi
   info "Using vservers '$vsnames'"
   usevserver=yes
fi

## SANITY CHECKS #########################

if [ "$luksheaders" == "yes" ]; then
   if [ ! -x "$DD" ]; then
      warning "can't find dd, skipping backup of LUKS headers."
      luksheaders="no"
   fi
   if [ ! -x "$CRYPTSETUP" ]; then
      warning "can't find cryptsetup, skipping backup of LUKS headers."
      luksheaders="no"
   fi
fi

if [ "$lvm" == "yes" ]; then
   if [ ! -x "$VGS" ]; then
      warning "can't find vgs, skipping backup of LVM metadata"
      lvm="no"
   fi
   if [ ! -x "$VGCFGBACKUP" ]; then
      warning "can't find vgcfgbackup, skipping backup of LVM metadata"
      lvm="no"
   fi
fi

if [ "$mbr" == "yes" ]; then
   if [ ! -x "$DD" ]; then
      warning "can't find dd, skipping backup of MBR."
      mbr="no"
   fi
fi

if [ "$bios" == "yes" ]; then
   if [ ! -x "$FLASHROM" ]; then
      warning "can't find flashrom, skipping backup of BIOS."
      mbr="no"
   fi
fi

## PACKAGES ##############################

#
# here we grab a list of the packages installed and removed.
#

if [ "$packages" == "yes" ]; then

   if [ $usevserver = yes ]; then
      info "vserver root directory set to: $VROOTDIR"
      for vserver in $vsnames; do
         info "examining vserver: $vserver"
         # is it running ?
         vservers_running $vserver
         if [ $? -ne 0 ]; then
            warning "The vserver $vserver is not running."
            continue
         fi
         # is $packagemgr available inside $vserver ?
         if [ ! -x "${VROOTDIR}/${vserver}${packagemgr}" ]; then
            warning "can't find $packagemgr in vserver $vserver, skipping installed packages report."
         else
            # don't expand * since it can be used in $packagemgroptions
            set -o noglob
            debug "$VSERVER $vserver exec $packagemgr $packagemgroptions > $VROOTDIR/$vserver$packagesfile"
            $VSERVER $vserver exec $packagemgr $packagemgroptions > $VROOTDIR/$vserver$packagesfile || fatal "can not save $packagemgr info to $packagesfile"
            set +o noglob
         fi
         # is $debconfgetselections available inside $vserver ?
         found=no
         # case #1: it is available on the host, is it available inside $vserver ?
         if [ -n "$debconfgetselections" ]; then
            [ -x "${VROOTDIR}/${vserver}${debconfgetselections}" ] && found=yes
         # case #2: it is not available on the host, is it available inside $vserver ?
         else
            [ -n "`$VSERVER $vserver exec which debconf-get-selections`" ] && found=yes
         fi
         if [ "$found" != yes ]; then
            warning "can't find debconf-get-selections in vserver $vserver, skipping package selection states. You may want to install the debconf-utils package."
         else
            debug "$VSERVER $vserver exec $debconfgetselections > $VROOTDIR/$vserver$selectionsfile"
            $VSERVER $vserver exec $debconfgetselections > $VROOTDIR/$vserver$selectionsfile || fatal "can not save debconf-get-selections info to $selectionsfile"
         fi
         unset found
      done
   fi

   # We want to perform this on the host as well
   if [ -z "$packagemgr" -o ! -x "$packagemgr" ]; then
      warning "can't find ${packagemgr}, skipping installed packages report."
   else
      # don't expand * since it can be used in $packagemgroptions
      set -o noglob
      debug "$packagemgr $packagemgroptions > $packagesfile"
      $packagemgr $packagemgroptions > $packagesfile || fatal "can not save $packagemgr info to $packagesfile"
      set +o noglob
   fi
   if [ -z "$debconfgetselections" ]; then
      warning "can't find debconf-get-selections, skipping package selection states. You might want to install the debconf-utils package."
   else
      debug "$debconfgetselections > $selectionsfile"
      $debconfgetselections > $selectionsfile || fatal "can not save $debconfgetselections info to $selectionsfile"
   fi
fi

## System report ##############################

#
# here we grab a bunch of system stuff for a report
#

export STATUS

HASHES="#################################################################"
DASHES="-----------------------------------------------------------------"

cat /dev/null > $sysreportfile || fatal "can not write to $sysreportfile"


catiffile () {
   echo $HASHES >> $sysreportfile
   echo "# $STATUS" >> $sysreportfile
   echo $HASHES >> $sysreportfile
   if [ -f $1 ]; then
      echo "file: $1" >> $sysreportfile
      echo $DASHES >> $sysreportfile
      cat $1 >> $sysreportfile 2>&1 || info "reading of $1 failed"
   fi
   if [ -d $1 ]; then
      echo "directory: $1" >> $sysreportfile
      echo $DASHES >> $sysreportfile
      for file in `find $1 -maxdepth 3 -noleaf -type f`
      do
         catiffile $file
      done
   fi
   echo $DASHES >> $sysreportfile
}

catifexec () {
   if [ -x $1 ]; then
      echo $HASHES >> $sysreportfile
      echo "# $STATUS" >> $sysreportfile
      echo $HASHES >> $sysreportfile
      $*  >> $sysreportfile 2>&1 || info "executing of $1 failed"
   fi
}


STATUS="Determining $os version:"
catiffile $osversion

STATUS="Determinding your current hostname: "
catifexec "/bin/hostname"

STATUS="Getting the date:"
catifexec "/bin/date"

STATUS="Checking your systems current uptime and load average:"
catifexec "/usr/bin/uptime"

STATUS="Checking available memory:"
catifexec "/usr/bin/free"

STATUS="Checking free disk space:"
catifexec "/bin/df" "-al --exclude-type=tmpfs"

STATUS="Collecting what services run at what run level:"
if [ $os = "redhat" ]; then
   catifexec "/sbin/chkconfig" "--list"
   STATUS="Collecting information about /etc/rc.d:"
   catiffile "/bin/ls /etc/rc.d/rc*.d/"

elif [ $os = "debian" ]; then
   for level in 0 1 2 3 4 5 6 S; do
      echo "Level: $level" >> $sysreportfile
      for f in /etc/rc${level}.d/*; do
         # Remove /etc/Knn or Snn from beginning
         ff=$(echo $f | @SED@ 's_/etc/rc..d/[KS][0-9][0-9]__')
         if [ $f != $ff ]; then
            echo $ff >> $sysreportfile
         fi
      done
      echo "" >> $sysreportfile
   done
fi

STATUS="Getting bootloader information:"
catifexec "/bin/ls" "-alR /boot"

# This covers sparc, alpha, and intel (respectively)
# updated for grub -mpg
if [ -f /etc/silo.conf ]; then
   STATUS="Collecting information about the boot process (silo):"
   catiffile "/etc/silo.conf"
fi
if [ -f /etc/milo.conf ]; then
   STATUS="Collecting information about the boot process (milo):"
   catiffile "/etc/milo.conf"
fi
if [ -f /etc/lilo.conf ]; then
   STATUS="Collecting information about the boot process (lilo):"
   catiffile "/etc/lilo.conf"
   catifexec "/sbin/lilo" "-q"
fi
if [ -d /boot/grub -a -f /boot/grub/grub.conf -a -f /boot/grub/device.map ]; then
   STATUS="Collecting information about the boot process (grub.conf):"
   catiffile "/boot/grub/grub.conf"
   STATUS="Collecting information about the boot process (grub.map):"
   catiffile "/boot/grub/device.map"
fi
if [ -f /etc/cluster.conf -o -f /etc/cluster.xml ] ; then
   STATUS="Gathering information on cluster setup"
   # 2.1 AS
   if [ -f /etc/cluster.conf ] ; then
      catiffile "/etc/cluster.conf"
   fi
   # Taroon
   if [ -f /etc/cluster.xml ] ; then
      catiffile "/etc/cluster.xml"
   fi
fi

STATUS="Gathering sysctl information (sysctl -a):"
catiffile "sysctl -a 2>/dev/null"
STATUS="Gathering sysctl information (/etc/sysctl.conf):"
catiffile "/etc/sysctl.conf"

STATUS="Gathering IP information (/sbin/ifconfig):"
catifexec "/sbin/ifconfig" "-a"

STATUS="Gathering additional IP information (/bin/ip addr list):"
catifexec "/bin/ip" "addr list"

STATUS="Checking network routes:"
catifexec "/sbin/route" "-n"

STATUS="Collecting Name Service Switch config information:"
catiffile "/etc/nsswitch.conf"

STATUS="Collecting information about system authentication (pam):"
catiffile "/etc/pam.conf"
catiffile "/etc/pam.d"

echo
echo "Getting information about the kernel."
echo
STATUS="Getting kernel version:"
catifexec "/bin/uname" "-a"
if [ "$hardware" == "yes" ]; then
   STATUS="Checking module information:"
   catifexec "/sbin/lsmod"
   for x  in $(/sbin/lsmod | /usr/bin/cut -f1 -d" " 2>/dev/null | /bin/grep -v Module 2>/dev/null
   ) ; do
      STATUS="Checking module information $x:"
      catifexec "/sbin/modinfo" "$x"
   done
fi

STATUS="Gathering information about your filesystems:"
catiffile "/proc/filesystems"

STATUS="Gathering information about your system stat:"
catiffile "/proc/stat"

STATUS="Gathering information about your partitions:"
catiffile "/proc/partitions"

STATUS="Gathering information about your ksyms:"
catiffile "/proc/kallsyms"

STATUS="Gathering information about slabinfo:"
catiffile "/proc/slabinfo"

# Added support to cover for the new modules.conf layout in Red Hat 7
STATUS="Collecting information regarding kernel modules"
VER=`uname -r`
catiffile "/lib/modules/$VER/modules.dep"
if [ -f /etc/conf.modules ]; then
   STATUS="Collecting information regarding kernel modules (conf.modules)"
   catiffile "/etc/conf.modules"
fi
if [ -f /etc/modules.conf ]; then
   STATUS="Collecting information regarding kernel modules (modules.conf)"
   catiffile "/etc/modules.conf"
fi
if [ -f /etc/modprobe.conf ]; then
   STATUS="Collecting information regarding kernel modules (modeprobe.conf)"
   catiffile "/etc/modprobe.conf"
fi

# dkms status
if [ -x /usr/sbin/dkms ] ; then
   STATUS="Gathering current status of modules, versions and kernels (dkms):"
   catifexec "/usr/sbin/dkms" "status"
fi

if [ -f /etc/sysconfig/isdncard ] ; then
   STATUS="Gathering information about ISDN:"
   catiffile "/etc/sysconfig/isdncard"
fi

STATUS="Collecting information from the proc directory:"
catiffile "/proc/pci"

STATUS="Getting kernel command line"
catiffile "/proc/cmdline"

STATUS="Gathering information about your CPU:"
catiffile "/proc/cpuinfo"

STATUS="Gathering information about your Ram:"
catiffile "/proc/meminfo"

STATUS="Gathering information about your ioports:"
catiffile "/proc/ioports"

STATUS="Gathering information about your interrupts:"
catiffile "/proc/interrupts"

STATUS="Gathering information about your scsi devices:"
catiffile "/proc/scsi"

STATUS="Gathering information about your dma:"
catiffile "/proc/dma"

STATUS="Gathering information about your devices (/proc/devices):"
catiffile "/proc/devices"

STATUS="Gathering information about your rtc:"
catiffile "/proc/rtc"

STATUS="Gathering information about your ide drivers:"
catiffile "/proc/ide"

if [ "$hardware" == "yes" ]; then
   STATUS="Gathering information about your bus:"
   catifexec "/usr/bin/lspci"
   catiffile "/proc/bus"
fi

echo
echo "Getting disk and filesystem information."
echo

STATUS="Collecting information from /etc/fstab:"
catiffile "/etc/fstab"

STATUS="Collecting disk partition information:"
catifexec "/sbin/fdisk" "-l"

STATUS="Checking mounted file systems (mount) "
catifexec "/bin/mount"

STATUS="Checking mounted file systems (/proc/mounts)"
catiffile "/proc/mounts"

STATUS="Collecting Software RAID information (/proc/mdstat)"
catiffile "/proc/mdstat"

STATUS="Collecting Software RAID information (/etc/raidtab)"
catiffile "/etc/raidtab"

STATUS="Collecting Software RAID information (/etc/mdadm.conf)"
catiffile "/etc/mdadm.conf"

STATUS="Collecting Software RAID information (/sbin/mdadm -Q)"
if ls /dev/md?* >/dev/null 2>&1; then
   catifexec "/sbin/mdadm" "-Q" "--detail" '/dev/md?*'
fi

STATUS="Collecting Automount information (auto.master)"
catiffile "/etc/auto.master"

STATUS="Collecting Automount information (auto.misc)"
catiffile "/etc/auto.misc"

STATUS="Collecting Automount information (auto.net)"
catiffile "/etc/auto.net"

STATUS="Collecting LVM information:"
if [ $os = "redhat" ]; then
   catifexec "/usr/sbin/vgdisplay" "-vv"
elif [ $os = "debian" ]; then
   catifexec "/sbin/vgdisplay" "-vv"
fi

STATUS="Collecting device-mapper (dm) information:"
catifexec '/sbin/dmsetup' 'info'

STATUS="Collecting SCSI Tape information (/etc/stinit.def)"
catiffile "/etc/stinit.def"

if [ -x /sbin/lsusb ] ; then
   STATUS="Collecting USB devices list (lsusb):"
   catifexec "/sbin/lsusb"
fi

if [ -x /usr/bin/lshal ] ; then
   STATUS="Collecting global devices list (lshal):"
   catifexec "/usr/bin/lshal"
fi


STATUS="Gathering information on SELinux setup"
catifexec "/usr/bin/selinuxconfig"
catifexec "/usr/sbin/sestatus"
if [ $os = "redhat" ]; then
   catifexec "rpm" "-q -V selinux-policy-targeted"
   catifexec "rpm" "-q -V selinux-policy-strict"
fi

if [ $usevserver = yes ]; then
   STATUS="Gathering vserver information"
   catiffile "/proc/virtual"
fi

if [ "$partitions" == "yes" ]; then
   if [ "$dosfdisk" == "yes" ]; then
      if [ ! -x "$SFDISK" ]; then
         warning "can't find sfdisk, skipping sfdisk report."
         partitions="no"
      fi
   fi
   if [ "$dohwinfo" == "yes" ]; then
      if [ ! -x "$HWINFO" ]; then
         warning "can't find hwinfo, skipping partition report."
         partitions="no"
      fi
   fi
fi

if [ "$hardware" == "yes" ]; then
   if [ ! -x "$HWINFO" ]; then
      warning "can't find hwinfo, skipping hardware report."
      hardware="no"
   fi
fi

## HARDWARE #############################

#
# here we use hwinfo to dump a table listing all the
# information we can find on the hardware of this machine
#

if [ "$hardware" == "yes" ]; then
   if [ "$dohwinfo" == "yes" ]; then
      if [ -f $hardwarefile ]; then
         rm $hardwarefile
      fi
      touch $hardwarefile
      echo -e "\n\n====================== summary ======================\n" >>  $hardwarefile
      debug "$HWINFO --short --cpu --network --disk --pci  >> $hardwarefile"
      $HWINFO --short --cpu --network --disk --pci  >> $hardwarefile
      for flag in cpu network bios pci; do
         echo -e "\n\n====================== $flag ======================\n" >>  $hardwarefile
         $HWINFO --$flag >> $hardwarefile
      done
   fi
fi

## PARTITIONS #############################

# here we use sfdisk to dump a listing of all the partitions.
# these files can be used to directly partition a disk of the same size.

if [ "$partitions" == "yes" ]; then
   if [ "$dosfdisk" == "yes" ]; then
      devices=`LC_ALL=C $LSBLK --output NAME,TYPE --list --paths 2>/dev/null | grep "disk$" | @AWK@ '{print $1}'`
      if [ "$devices" == "" ]; then
         warning "No harddisks found"
      fi
      for dev in $devices; do
         debug "$SFDISK will try to backup partition tables for device $dev"
         [ -b $dev ] || continue
         label=${dev#/dev/}
         label=${label//\//-}
         outputfile=${partitionsfile//__star__/$label}
         debug "$SFDISK $sfdisk_options -d $dev > $outputfile 2>/dev/null"
         $SFDISK $sfdisk_options -d $dev > $outputfile 2>/dev/null
         if [ $? -ne 0 ]; then
            warning "The partition table for $dev could not be saved."
         fi
      done
   fi
   if [ "$dohwinfo" == "yes" ]; then
      debug "Using $HWINFO to get all available disk information"
      echo -e "\n\n====================== $disk ======================\n" >>  $hardwarefile
      $HWINFO --disk >> $hardwarefile
   fi
fi

if [ "$luksheaders" == "yes" ]; then
   devices=`LC_ALL=C $SFDISK -l 2>/dev/null | grep "^Disk /dev" | @AWK@ '{print $2}' | cut -d: -f1`
   [ -n "$devices" ] || warning "No block device found"
   partitions=`LC_ALL=C $SFDISK -l 2>/dev/null |grep "^/dev" | @AWK@ '{print $1}'`
   [ -n "$partitions" ] || warning "No partitions found"
   targetdevices=""
   for dev in $devices $partitions; do
      [ -b $dev ] || continue
      debug "$CRYPTSETUP isLuks $dev"
      $CRYPTSETUP isLuks $dev
      [ $? -eq 0 ] && targetdevices="$targetdevices $dev"
   done
   for dev in $targetdevices; do
      label=${dev#/dev/}
      label=${label//\//-}
      outputfile=${luksheadersfile//__star__/$label}
      # the following sizes are expressed in terms of 512-byte sectors
      debug "Let us find out the LUKS header size for $dev"
      debug "$CRYPTSETUP luksDump \"$dev\" | grep '^Payload offset:' | @AWK@ '{print $3}'"
      headersize=`$CRYPTSETUP luksDump "$dev" | grep '^Payload offset:' | @AWK@ '{print $3}'`
      if [ $? -ne 0 ]; then
         warning "Could not compute the size of LUKS header, skipping $dev"
         continue
      elif [ -z "$headersize" -o -n "`echo \"$headersize\" | @SED@ 's/[0-9]*//g'`" ]; then
         warning "The computed size of LUKS header is not an integer, skipping $dev"
         continue
      fi
      debug "Let us backup the LUKS header of $dev"
      debug "$DD if=\"${dev}\" of=\"${outputfile}\" bs=512 count=\"${headersize}\""
      output=`$DD if="${dev}" of="${outputfile}" bs=512 count="${headersize}" 2>&1`
      exit_code=$?
      if [ $exit_code -eq 0 ]; then
         debug "$output"
         info "The LUKS header of $dev was saved to $outputfile."
      else
         debug "$output"
         fatal "The LUKS header of $dev could not be saved."
      fi
   done
fi

if [ "$mbr" == "yes" ]; then
   devices=`LC_ALL=C $SFDISK -l 2>/dev/null | grep "^Disk /dev" | @AWK@ '{print $2}' | cut -d: -f1`
   if [ "$devices" == "" ]; then
      warning "No harddisks found"
   fi
   for dev in $devices; do
      debug "Will try to backup MBR tables for device $dev"
      [ -b $dev ] || continue
      label=${dev#/dev/}
      label=${label//\//-}
      outputfile=${mbrfile//__star__/$label}
      debug "$DD if=$dev of=$outputfile bs=512 count=1 2>/dev/null"
      $DD if=$dev of=$outputfile bs=512 count=1 2>/dev/null
      if [ $? -ne 0 ]; then
         warning "The MBR for $dev could not be saved."
      fi
   done
fi

## LVM ####################################

# returns 0 on success, 1 on error, 2 if not tried
# outputs error message if error, reason if not tried
function doLvmBackup () {
   local lvmdir="$1"
   if [ ! -d "$lvmdir" ]; then
      if ! mkdir "$lvmdir"; then
         echo "could not create $lvmdir"
         return 2
      else
         info "successfully created $lvmdir"
      fi
   fi
   if [ ! -w "$lvmdir" ]; then
      echo "can not write to directory $lvmdir"
      return 2
   fi
   debug "Let's try to gather the list of LVM volume groups"
   debug "$VGS --options vg_name --noheadings | @SED@ 's/^[ ]*//' | @SED@ 's/[ ]*$//' | tr '\n' ' '"
   vgs=`$VGS --options vg_name --noheadings | @SED@ 's/^[ ]*//' | @SED@ 's/[ ]*$//' | tr '\n' ' '`
   debug "Let's try to backup LVM metadata for detected volume groups: $vgs"
   for vg in $vgs
   do
      debug "$VGCFGBACKUP --file \"${lvmdir}\"/\'%s\' $vg"
      output=`$VGCFGBACKUP --file "${lvmdir}"/'%s' $vg`
   done
   exit_code=$?
   debug "$output"
   case $exit_code in
      0)
         info "LVM metadata was saved to $lvmdir for volume groups: $vgs"
         return 0
         ;;
      *)
         echo "LVM metadata could not be saved for at least one of these volume groups: $vgs"
         return 1
         ;;
   esac
}

if [ "$lvm" == "yes" ]; then
   output=`doLvmBackup "${parentdir}/lvm"`
   exit_code=$?
   case $exit_code in
      0) # success. info message has already been displayed
         true
         ;;
      1) # error
         fatal "$output"
         ;;
      2) # could not even try
         fatal "LVM metadata backup was not tried: $output"
         ;;
      *) # should never happen
         fatal "Unhandled error ($exit_code) while trying to backup LVM metadata, please report a bug"
         ;;
   esac
fi

## BIOS ####################################

if [ "$bios" == "yes" ]; then
   debug "Trying to backup BIOS"
   debug "$FLASHROM -r ${parentdir}/bios --programmer internal >/dev/null 2>&1"
   $FLASHROM -r ${parentdir}/bios --programmer internal >/dev/null 2>&1
   if [ $? -ne 0 ]; then
      warning "The BIOS could not be saved."
   fi
fi