dump_snapshot

#!/bin/bash

export PATH=$PATH:/usr/sbin
SCALEIO_SERVERS="scaleio1.example.com scaleio2.example.com scaleio3.example.com"
SCALEIO_PW="<SCALEIO_PASSWORD>"
TARGET_DEVICE=/dev/scinia
BACKUP_LOCATION=/volumedump
MYIP=$(ip addr show dev eth0 | awk -F'[ /]*' '/inet/ {print $3}')
PASSWORD_FILE=/etc/backup-passwords.txt
RATE=70m
COMPRESS_PROGRAM=gzip
# yum install pigz and change COMPRESS_PROGRAM above for better performance on multi-core hosts

show_help() {
        echo -e "\nThis script will attach a given snapshot volume ID temporarily as ${TARGET_DEVICE} and encrypt it into a gzip file within ${BACKUP_LOCATION}/."
        echo -e "\nUsage:  dump_snapshot [OPTIONS] (-i volume_id) \n"
        echo "OPTIONS:"
        echo " -h, -?   help"
        echo " -f       display only the output filepath upon success"
        echo " -i       scaleIO volume_id to dump"
        echo -e " -v       increase verbosity\n"
        exit 1
}

OPTIND=1
VOLUME_ID=
FILEPATH_ONLY=0
VERBOSE=0

while getopts "fh?i:v" opt; do
    case "$opt" in
    f)  FILEPATH_ONLY=1
        ;;
    h|\?)
        show_help
        exit 0
        ;;
    i)  VOLUME_ID=$OPTARG
        ;;
    v)  VERBOSE=1
        ;;
    esac
done

shift $((OPTIND-1))

if [ "${VOLUME_ID}" == "" ]
then
        show_help
        exit 1
fi

if [[ -f ${TARGET_DEVICE} || -b ${TARGET_DEVICE} ]]; then
  echo -e "\nERROR: ${TARGET_DEVICE} already exists on this host. Aborting."; exit 1
fi

#Find out which server is our current primary MDM
PRIMARY_SERVER=
for SERVER in ${SCALEIO_SERVERS}; do
  OUTPUT=$(ssh ${SERVER} "scli --login --username admin --password ${SCALEIO_PW} 2>&1")
  #Error: Failed to connect
  #Logged in. User role is SuperUser. System ID is 78221ddb0dcff2f5
  WORKED=$(echo "${OUTPUT}" | grep 'Logged in')
  if [ $? -eq 0 ]; then
    PRIMARY_SERVER=${SERVER}
    break
  fi
done

if [ "${PRIMARY_SERVER}" != "" ]; then

  if [ ${VERBOSE} -eq 1 ]; then echo -e "Found primary ScaleIO MDM ${PRIMARY_SERVER}\n"; fi
  OUTPUT=$(ssh ${PRIMARY_SERVER} "scli --query_volume --volume_id ${VOLUME_ID}")
  if [ ${VERBOSE} -eq 1 ]; then echo -e "${OUTPUT}\n"; fi
  WORKED=$(echo "${OUTPUT}" | grep 'Volume is unmapped')

  if [ $? -eq 0 ]; then
    OUTPUT=$(ssh ${PRIMARY_SERVER} "scli --map_volume_to_sdc --volume_id ${VOLUME_ID} --sdc_ip ${MYIP}")
    #Successfully mapped volume with ID 597033bd0000001f to SDC 224.36.61.124

    if [ ${VERBOSE} -eq 1 ]; then echo -e "${OUTPUT}\n"; fi
    WORKED=$(echo "${OUTPUT}" | grep 'Successfully mapped')

    if [ $? -eq 0 ]; then
      sleep 5

      if [ ${FILEPATH_ONLY} -eq 0 ]; then
         echo "Mapped volume ID ${VOLUME_ID} to ${TARGET_DEVICE}. Dumping to ${BACKUP_LOCATION}/${VOLUME_ID}.gz"
         OUTPUT=$(time dd bs=1048576 if=${TARGET_DEVICE} | pv -q --rate-limit ${RATE} | ${COMPRESS_PROGRAM} -1 --stdout - | openssl enc -e -aes-128-ctr -pass file:${PASSWORD_FILE} -out ${BACKUP_LOCATION}/${VOLUME_ID}.gz)
      else
         OUTPUT=$(dd bs=1048576 if=${TARGET_DEVICE} 2>>/dev/null | pv -q --rate-limit ${RATE} | ${COMPRESS_PROGRAM} -1 --stdout - | ${COMPRESS_PROGRAM} -1 --stdout - | openssl enc -e -aes-128-ctr -pass file:${PASSWORD_FILE} -out ${BACKUP_LOCATION}/${VOLUME_ID}.gz)
      fi

      if [ $? -eq 0 ]; then
        if [ ${FILEPATH_ONLY} -eq 0 ]; then
          echo "${OUTPUT}"; ls -lrt ${BACKUP_LOCATION}/${VOLUME_ID}.gz
        else 
          echo "${BACKUP_LOCATION}/${VOLUME_ID}.gz"
        fi
      fi

      OUTPUT=$(ssh ${PRIMARY_SERVER} "scli --unmap_volume_from_sdc --volume_id ${VOLUME_ID} --sdc_ip ${MYIP} --i_am_sure")
      #Successfully un-mapped volume with ID 597033bd0000001f from SDC 224.36.61.124
      if [ ${VERBOSE} -eq 1 ]; then echo -e "${OUTPUT}\n"; fi

      WORKED=$(echo "${OUTPUT}" | grep 'Successfully un-mapped')
      if [ $? -ne 0 ]; then
        if [ ${VERBOSE} -eq 1 ]; then echo -e "${OUTPUT}\n"; fi
        (>&2 echo "WARNING: Volume unmap to this SDC was not successful. You may need to do the following manually on the primary MDM:")
        (>&2 echo "scli --unmap_volume_from_sdc --volume_id ${VOLUME_ID} --sdc_ip ${MYIP} --i_am_sure"); exit 2
      fi
    else
      (>&2 echo -e "\n${OUTPUT}\nERROR: Failed to successfull map volume to this SDC."); exit 1
    fi
  else
    (>&2 echo -e "\n${OUTPUT}\nERROR: Unable to find unmapped volume ${VOLUME_ID}."); exit 1
  fi
else
  (>&2 echo "ERROR: Could not determine the primary ScaleIO MDM server. Aborting."); exit 1
fi