#!/bin/sh
#
# Written by:
#   Brent L. Bates
#   ViGYAN, Inc.
#   30 Research Drive
#   Hampton, VA 23666-2315
#   blbates@vigyan.com
#
#set -x
#set -v

LEVEL=0
TAPEDOMAIN=vigyan.com
TAPEHOST=`hostname -s`.${TAPEDOMAIN}
TAPELABEL_START='Backups:ViGYAN:'${1}':Tape_'

echo "Starting date: "`/bin/date`

TAPEHOST_OS=`uname -s`
if [ ${TAPEHOST_OS} = 'IRIX' -o ${TAPEHOST_OS} = 'IRIX64' ]; then
   #
   # SGI
   #
   TAPE=/dev/nrtapec
   /usr/sbin/renice -n +10 $$
   TAPE_STATUS='mt -f ${TAPE} status 2>&1 | grep Media |sed -e "s/^.*Media.*:[ 	]*//" |sed -e "s/[ 	][ 	]*.*//'
   UNLOAD='echo "Rewinding Tape." ; mt -f ${TAPE} rewind ; echo "Offlining Tape." ; mt -f ${TAPE} offline ; sleep 2 ; if [ `eval ${TAPE_STATUS}` != 'Not' ]; then  mt -f ${TAPE} unload; fi'
   if [ x`eval ${TAPE_STATUS}` != 'xNot' ]; then
      TAPE_UNLOADED="No"
   else
      TAPE_UNLOADED="Yes"
   fi
elif [ ${TAPEHOST_OS} = 'Linux' ]; then
   #
   # Linux
   #
   SIZE=12288000
   TAPE=/dev/nst0
   /usr/bin/renice +10 $$
   TAPE_STATUS='mt -f ${TAPE} status 2>&1 | grep DR_OPEN |tr "[\ ]" "[\\n]" |grep DR_OPEN'
   UNLOAD='echo "Rewinding Tape." ; mt -f ${TAPE} rewind ; echo "Offlining Tape." ; mt -f ${TAPE} offline ; sleep 2 ; if [ 'x'`eval ${TAPE_STATUS}` != 'xDR_OPEN' ]; then mt -f ${TAPE} offline; fi'
   if [ x`eval ${TAPE_STATUS}` != 'xDR_OPEN' ]; then
      TAPE_UNLOADED="No"
   else
      TAPE_UNLOADED="Yes"
   fi
else
   #
   # SunOS
   #
   TAPE=/dev/exabyte
   /usr/etc/renice +10 $$
   UNLOAD="echo "Rewinding Tape." ; mt -f ${TAPE} rewind ; echo "Offlining Tape." ; mt -f ${TAPE} offline"
fi

if [ ${TAPE_UNLOADED} = 'Yes' ]; then
   echo 'No tape loaded.'
   echo "Ending date: "`/bin/date`
   exit 1
fi

mt -f ${TAPE} rewind
if [ $? -ne 0 ]; then
   echo 'Something is wrong with tape or tape drive.'
   echo "Ending date: "`/bin/date`
   exit 1
fi

if [ ${TAPEHOST_OS} = 'IRIX' -o ${TAPEHOST_OS} = 'IRIX64' ]; then
   #
   # SGI
   #
   # Move to header partition
   #
   mt -f ${TAPE} sppart 1
   mt -f ${TAPE} rewind
elif [ ${TAPEHOST_OS} = 'Linux' ]; then
   #
   # Linux
   #
   # Make sure tape drive is in proper mode.
   #
   echo "Rewinding Tape."
   mt -f ${TAPE} rewind
   if [ `uname -r` = '2.2.14-12' ]; then
      #
      # Settings for old kernel.
      #
      if [ ${AIT} != 'y' ] ; then
         echo "Setting tape parameters: stsetoptions buffer-writes can-partitions"
         mt -f ${TAPE} stsetoptions buffer-writes can-partitions
         echo "Setting: defcompression 1"
         mt -f ${TAPE} defcompression 1
         echo "Setting: datcompression 1"
         mt -f ${TAPE} datcompression 1
      fi
   else
      #
      # Settings for newer kernels.
      #
      if [ ${AIT} = 'y' ] ; then
         echo "NOT setting: setblk 0 (Variable block size)"
#         echo "Setting: setblk 0 (Variable block size)"
#         mt -f ${TAPE} setblk 0
      else
         echo "Setting tape parameters: stsetoptions scsi2logical can-partitions"
         mt -f ${TAPE} stsetoptions scsi2logical can-partitions
         echo "Clearing tape parameters: stclearoptions async-writes"
         mt -f ${TAPE} stclearoptions async-writes
         echo "Setting: setblk 0 (Variable block size)"
         mt -f ${TAPE} setblk 0
         echo "Setting: defcompression 1"
         mt -f ${TAPE} defcompression 1
      fi
   fi
   if [ ${AIT} != 'y' ] ; then
      echo "Setting: compression"
      mt -f ${TAPE} compression
      #
      # Move to header partition
      #
      echo "Moving to partition 1."
      mt -f ${TAPE} setpartition 1
   fi
   echo "Rewinding Tape."
   mt -f ${TAPE} rewind
else
   #
   # SunOS
   #
   mt -f ${TAPE} rewind
fi

if [ ${AIT} = 'y' ] ; then
   #
   # Set a dummy header for xfsdump to use.
   #
   HEADER=${TAPELABEL_START}"#:Level_"${LEVEL}
else
   #
   # Get then check header
   #
   HEADER=`dd if=${TAPE} bs=1k cbs=1k conv=unblock`
   
   START=`echo ${HEADER} |sed -e 's/:Tape_.*/:Tape_/'`
   
   if [ $? -eq 0 ]; then
      if [ "${HEADER:-'NOHEADER'}" = 'NOHEADER' ]; then
         echo 'No Header on Tape'
         echo 'Header should be:' ${TAPELABEL_START}"#:Level_"${LEVEL}
         eval ${UNLOAD}
         echo "Ending date: "`/bin/date`
         exit 1
      elif [ "${START}" = "${TAPELABEL_START}" ]; then
         echo 'Header verified:'${HEADER}
         mt -f ${TAPE} rewind
         if [ ${TAPEHOST_OS} != 'IRIX' -a ${TAPEHOST_OS} != 'IRIX64' -a ${TAPEHOST_OS} != 'Linux' ]; then
            echo ${HEADER} | dd of=${TAPE} bs=1k cbs=1k conv=block
            mt -f ${TAPE} rewind
            echo '  Header re-written; beginning dump'
         fi
      else
         echo 'Wrong tape'
         echo 'Header found was: ' ${HEADER}
         echo 'Header should be: ' ${TAPELABEL_START}"#:Level_"${LEVEL}
         eval ${UNLOAD}
         echo "Ending date: "`/bin/date`
         exit 1
      fi
   else
      echo 'Error reading header.'
      echo "Ending date: "`/bin/date`
      exit 1
   fi
fi

if [ ${TAPEHOST} = ${1}'.'${TAPEDOMAIN} ]; then
   REMOTE_COMMAND=
   TAPE_ARGS=${TAPE}
else
   REMOTE_COMMAND="rsh ${1}"
   TAPE_ARGS="'guest@'${TAPEHOST}':'${TAPE}"
fi

REMOTE_OS=`${REMOTE_COMMAND} uname -s `

if [ $? -ne 0 ]; then
   echo 'Remote system ${1} is down.  No backup made.'
   echo "Ending date: "`/bin/date`
   exit 1
fi

if [ ${REMOTE_OS} = 'IRIX' -o ${REMOTE_OS} = 'IRIX64' ]; then
   if [ ${1} = 'indra' ]; then
      DISKS=`${REMOTE_COMMAND} df -l | grep dev | awk '{ print $2"_"$7 }' | sort -r `
   else
      DISKS=`${REMOTE_COMMAND} df -l | grep dev | awk '{ print $2"_"$7 }'`
   fi
#   XFSDUMP="/usr/sbin/xfsdump -l ${LEVEL} -f ${TAPE_ARGS} -p 600 -F -M ${HEADER} -Y 5"
   XFSDUMP="/usr/sbin/xfsdump -e -o -l ${LEVEL} -f ${TAPE_ARGS} -p 600 -F -M ${HEADER} -Y 5"
#   XFSDUMP="/usr/sbin/xfsdump -l ${LEVEL} -f ${TAPE_ARGS} -b 8192 -m -p 600 -F -M ${HEADER}"
#   XFSDUMP="/usr/sbin/xfsdump -l ${LEVEL} -f ${TAPE_ARGS} -b 245760 -m -p 600 -F -M ${HEADER}"
#   DUMP="/usr/sbin/dump ${LEVEL}'ucCbf' 3m 20 ${TAPE_ARGS}"
   DUMP="/usr/sbin/dump ${LEVEL}ucdsbf 54000 6000 24 ${TAPE_ARGS}"
elif [ ${REMOTE_OS} = 'Linux' ]; then
   DISKS=`${REMOTE_COMMAND} df -l -T -x tmpfs | grep dev | sort -n -r -k4 | awk '{ print $2"_"$7 }'`
#   XFSDUMP="/usr/sbin/xfsdump -e -v excluded_files=debug,general=debug,proc=debug,drive=debug,media=debug,inomap=verbose -o -l ${LEVEL} -f ${TAPE_ARGS} -p 600 -F -M ${HEADER} -Y 5"
   XFSDUMP="/usr/sbin/xfsdump -e -v excluded_files=debug -o -l ${LEVEL} -f ${TAPE_ARGS} -p 600 -F -M ${HEADER} -Y 5"
#   DUMP="/sbin/dump -${LEVEL} -b 64 -B ${SIZE} -f ${TAPE_ARGS} -u"
#   DUMP="/sbin/dump -${LEVEL} -b 32 -B ${SIZE} -f ${TAPE_ARGS} -u"
#   DUMP="/sbin/dump -${LEVEL} -a -b 16 -f ${TAPE_ARGS} -u"
   DUMP="/sbin/dump -${LEVEL} -a -b 64 -f ${TAPE_ARGS} -u"
#   dump 0uBf ${SIZE} ${DEVICE} / >& /tmp/dump-output
else
#   DISKS=`${REMOTE_COMMAND} df -t 4.2 | grep dev | egrep -v sr0 | awk '{ print $2"_"$6 }'`
#   XFSDUMP=""
#   DUMP="/etc/dump ${LEVEL}ucCbf 3m 20 ${TAPE_ARGS}"
   DISKS=`${REMOTE_COMMAND} /bin/df -nlF ufs | awk '{ print $3"_"$1 }'`
   XFSDUMP=""
   DUMP="/usr/sbin/ufsdump ${LEVEL}ucbf 20 ${TAPE_ARGS}"
fi
#DISKS="xfs_/disk2 xfs_/disk4 xfs_/"

echo 'From machine' ${1} 'Dumping: ' ${DISKS}

if [ ${TAPEHOST_OS} = 'IRIX' -o ${TAPEHOST_OS} = 'IRIX64' ]; then
   #
   # SGI
   #
   # Move to data partition
   #
   mt -f ${TAPE} sppart 0
   mt -f ${TAPE} rewind
elif [ ${TAPEHOST_OS} = 'Linux' ]; then
   #
   # Linux
   #
   # Move to data partition
   #
   if [ ${AIT} != 'y' ] ; then
      mt -f ${TAPE} setpartition 0
   fi
   mt -f ${TAPE} rewind
else
   #
   # SunOS
   #
   mt -f ${TAPE} rewind
   mt -f ${TAPE} fsf 1
fi

for LINE in ${DISKS}
   do
      echo ${LINE}
      FILE_TYPE=`echo ${LINE} |sed -e 's/_/ /'`
      PARTITION=`echo ${FILE_TYPE} | awk '{print $2}'`
      FILE_TYPE=`echo ${FILE_TYPE} | awk '{print $1}'`
      if [ ${FILE_TYPE} = 'xfs' ]; then
#         echo "${REMOTE_COMMAND} ${XFSDUMP} -L ${PARTITION} ${PARTITION}"
         ${REMOTE_COMMAND} ${XFSDUMP} -L ${PARTITION} ${PARTITION}
      elif [ ${FILE_TYPE} = 'ext2' -o ${FILE_TYPE} = 'ext3' ]; then
#         echo "${REMOTE_COMMAND} ${DUMP} ${PARTITION}"
         ${REMOTE_COMMAND} ${DUMP} ${PARTITION}
      elif [ ${FILE_TYPE} = 'efs' ]; then
#         echo "${REMOTE_COMMAND} ${DUMP} ${PARTITION}"
         ${REMOTE_COMMAND} ${DUMP} ${PARTITION}
      elif [ ${FILE_TYPE} = 'vfat' ]; then
         echo "Not backing up VFAT file system."
      elif [ ${FILE_TYPE} = 'iso9660' ]; then
         echo "Not backing up ISO-9660 file system."
      else
#         echo "${REMOTE_COMMAND} ${DUMP} ${PARTITION}"
         ${REMOTE_COMMAND} ${DUMP} ${PARTITION}
      fi
   done

eval ${UNLOAD}
echo "Ending date: "`/bin/date`