Centre Blaise Pascal » gZFS

#!/bin/bash

# $Id: del-iscsi-volume 51 2013-10-10 11:20:37Z ltaulell $

# Copyright (C) 2013 Kevin Reverchon, Loïs Taulelle

# This file/program is part of gZFS free software

# See COPYING file for details

#

function usage {

  echo "Usage :" 1>&2

  echo "$0 [OPTIONS]" 1>&2

  echo " -h display this message" 1>&2

  echo " -i interactive mode" 1>&2

  echo " -T Specify the TID" 1>&2

}

function nointeractive {

if [ "$TID2DEL" == "" ]

then

   echo "Please specify a TID ISCSI" 1>&2

   exit 1

fi

TARGET=$(cat /proc/net/iet/session |grep -i tid:$TID2DEL |cut -d ":" -f3)

TID_FIND=1

TID_ISACTIVE=1

for line in $(cat /proc/net/iet/session)

do

  if [ $TID_FIND -eq 0 ]

  then

     CHECK_STATE=$(echo $line |awk '{ if ( /state:active/ ){ print 0 }else{ print $1 $line} }')

     if [ "$CHECK_STATE" = "0" ]

     then

         TID_ISACTIVE=0

     fi

  fi

  if [ $TID_ISACTIVE -eq 0 ]

  then

     echo "iscsi volume in use, please disconnect all clients first " 1>&2

     exit 1

  fi

  TID_LISTED=$(echo $line |awk '(/tid:/) { print $1 }')

  if [ "$TID_LISTED" != "" ]

  then

     if [ "tid:$TID2DEL" = "$TID_LISTED" ]

     then

        TID_FIND=0

     else

       TID_FIND=1

     fi

 fi

done

ietadm --op delete --tid=$TID2DEL

if [ $? -eq 0 ]

then

#   echo "*** La suppression via la commande ietadm s'est termine correctement"

   echo "*** Removal, via ietadm command, ended correctly "

   echo ""

#   echo "*** Vérification et suppression du volume dans le fichier /etc/iet/ietd.conf ..."

   echo "*** Checking and removal of volume's entry in /etc/iet/ietd.conf... "

   COPY_LINE=0

   >/tmp/.buffer_ietd.conf

   while read line

   do

      echo $line |grep -i "^Target"

      if [ $? -eq 0 ]

      then

         COPY_LINE=0

      fi

      echo $line |grep -i "^Target $TARGET"

      if [ $? -eq 0 ]

      then

         COPY_LINE=1

      fi

      if [ $COPY_LINE -eq 0 ]

      then

         echo $line >> /tmp/.buffer_ietd.conf

      fi

    done < "/etc/iet/ietd.conf"

#    echo "*** Sauvegarde du fichier /etc/iet/ietd.conf ..."

    echo "*** Backup of file /etc/iet/ietd.conf... "

    TODAY=$(date +%Y%m%d%H%M%S)

    cp /etc/iet/ietd.conf /etc/iet/ietd.conf.$TODAY

    cp /tmp/.buffer_ietd.conf /etc/iet/ietd.conf

   echo ""

#   echo "*** Vérification /proc/net/iet/volume :"

   echo "*** Checking /proc/net/iet/volumes: "

   cat /proc/net/iet/volume

   echo ""

#   echo "*** Verification repertoire /etc/iet :"

   echo "*** Checking /etc/iet directory: "

   ls -ltr /etc/iet

   echo ""

#   echo "*** Operation de suppression [OK] ..."

   echo "*** Removal operation [OK] "

else

#   echo "*** Un probleme est survenu lors de la tentative de suppression du volume iscsi TID:$TID2DEL"

#   echo "*** Veuillez vérifier que le volume n'est pas en cours d'utilisation (cat /proc/net/iet/session) sinon contacter l'admin en charge de ce service"

   echo "*** A problem occurred while trying to delete iscsi volume TID:$TID2DEL"

   echo "*** Please verify that this volume is not in use (cat /proc/net/iet/session) otherwise contact the BOFH in charge"

fi

}

function interactive {

#echo "*** Choix du volume ISCSI a supprimer ***"

echo "*** ISCSI volume to delete: ***"

cat /proc/net/iet/session

#echo "*** Saisir le TID du volume iscsi a supprimer : ***" 

echo "*** Please enter TID from iscsi volume to delete: ***"

while read inputline

do

   TID2DEL=$inputline 

#   echo "*** Etes-vous sur du nom : $inputline ? (y/n) ***"

   echo "*** Are you sure: $inputline ? (y/n) ***"

   while read inputConfirm

   do

      if [ "$inputConfirm" = "y" ]||[ "$inputConfirm" = "n" ]

      then

         break

      fi

#      echo "*** Etes-vous certain de vouloir supprimer le TID : $inputline ? (y/n) ***" 

      echo "*** Are you sure to delete this TID: $inputline ? (y/n) ***"

   done

   if [ "$inputConfirm" = "y" ]

   then

      break

   fi

   if [ "$inputConfirm" != "y" ]

   then

#      echo "*** Saisir le TID du volume iscsi a supprimer : ***" 

      echo "*** Please enter TID from iscsi volume to delete: ***"

   fi

done

#echo "**** Recuperation de la propriété Target (identifiant utilise dans le fichier /etc/iet/ietd.conf) ..."

echo "**** Retrieval of Target property (id used in /etc/iet/ietd.conf)... "

TARGET=$(cat /proc/net/iet/session |grep -i tid:$TID2DEL |cut -d ":" -f3)

#echo "Nom de la target a rechercher dans /etc/iet/ietd.conf : $TARGET"

echo "Target name to search in /etc/iet/ietd.conf: $TARGET"

echo ""

#echo "**** Check si le volume est en cours d'utilisation ..."

echo "**** Checking if volume is in use... "

TID_FIND=1

TID_ISACTIVE=1

for line in $(cat /proc/net/iet/session)

do

  if [ $TID_FIND -eq 0 ]

  then

     CHECK_STATE=$(echo $line |awk '{ if ( /state:active/ ){ print 0 }else{ print $1 $line} }')

     if [ "$CHECK_STATE" = "0" ]

     then

         TID_ISACTIVE=0

     fi

  fi

  if [ $TID_ISACTIVE -eq 0 ]

  then

#     echo "Le volume isci est en cours d'utilisation, suppression impossible"

     echo "ISCSI Volume is in use, cannot delete."

     exit 1

  fi

  TID_LISTED=$(echo $line |awk '(/tid:/) { print $1 }')

  if [ "$TID_LISTED" != "" ]

  then

     if [ "tid:$TID2DEL" = "$TID_LISTED" ]

     then

        TID_FIND=0 

     else

       TID_FIND=1 

     fi

 fi

done

#echo "*** Debut de la procédure de suppression ..."

echo "*** Beginning delete procedure... "

echo ""

ietadm --op delete --tid=$TID2DEL

if [ $? -eq 0 ]

then

#   echo "*** La suppression via la commande ietadm s'est termine correctement"

   echo "*** Removal, via ietadm command, ended correctly "

   echo ""

#   echo "*** Vérification et suppression du volume dans le fichier /etc/iet/ietd.conf ..."

   echo "*** Checking and removal of volume's entry in /etc/iet/ietd.conf... "

   COPY_LINE=0

   >/tmp/.buffer_ietd.conf

   while read line

   do

      echo $line |grep -i "^Target"

      if [ $? -eq 0 ]

      then

         COPY_LINE=0

      fi

      echo $line |grep -i "^Target $TARGET" 

      if [ $? -eq 0 ]

      then

         COPY_LINE=1

      fi

      if [ $COPY_LINE -eq 0 ]

      then

         echo $line >> /tmp/.buffer_ietd.conf

      fi 

    done < "/etc/iet/ietd.conf"

#    echo "*** Sauvegarde du fichier /etc/iet/ietd.conf ..."

    echo "*** Backup of file /etc/iet/ietd.conf... "

    TODAY=$(date +%Y%m%d%H%M%S)

    cp /etc/iet/ietd.conf /etc/iet/ietd.conf.$TODAY

    cp /tmp/.buffer_ietd.conf /etc/iet/ietd.conf

   echo ""

#   echo "*** Vérification /proc/net/iet/volume :"

   echo "*** Checking /proc/net/iet/volumes: "

   cat /proc/net/iet/volume

   echo ""

#   echo "*** Verification repertoire /etc/iet :"

   echo "*** Checking /etc/iet directory: "

   ls -ltr /etc/iet

   echo ""

#   echo "*** Operation de suppression [OK] ..."

   echo "*** Removal operation [OK] "

else

#   echo "*** Un probleme est survenu lors de la tentive de suppresion du volume iscsi TID:$TID2DEL"

#   echo "*** Veuillez vérifier que le volume n'est pas en cours d'uilisation (cat /proc/net/iet/session) sinon contacter l'admin en charge de ce service"

   echo "*** A problem occurred while trying to delete iscsi volume TID:$TID2DEL"

   echo "*** Please verify that this volume is not in use (cat /proc/net/iet/session) otherwise contact the BOFH in charge"

fi

echo "*** END ***"

}

while getopts "iT:h" OPTION

do

     case $OPTION in

         h)

             usage

             exit 1

             ;;

         i)

             interactive

             ;;

         T)

             TID2DEL=$OPTARG

             ;;

         *)

             usage

             exit 1

             ;;

     esac

done

if [ ! -d "/proc/net/iet" ]

then

  echo "Please, check if ietd is running ..." 1>&2

  exit 1

fi

if [ -z $TID2DEL ]

then

   usage

   exit 1

fi

nointeractive