CrashPlan packages for Synology NAS

UPDATE – The instructions and notes on this page apply to all three versions of the package hosted on my repo: CrashPlan, CrashPlan PRO, and CrashPlan PROe.

CrashPlan is a popular online backup solution which supports continuous syncing. With this your NAS can become even more resilient – it could even get stolen or destroyed and you would still have your data. Whilst you can pay a small monthly charge for a storage allocation in the Cloud, one neat feature CrashPlan offers is for individuals to collaboratively backup their important data to each other – for free! You could install CrashPlan on your laptop and have it continuously protecting your documents to your NAS, even whilst away from home.


CrashPlan is a Java application, and difficult to install on a NAS. Way back in January 2012 I decided to simplify it into a Synology package, since I had already created a few others. As I started I used information from Kenneth Larsen’s blog post, the Vincesoft blog article for installing on ARM processor Iomega NAS units, and this handy PDF document which is a digest of all of them. I used the PowerPC binaries Christophe had compiled on his blog, so thanks go to him. I wanted make sure the package didn’t require the NAS to be bootstrapped, so I bundled any dependent binaries. Back in 2012 I didn’t know how to cross compile properly so I had to use versions I had found, but over the years I have had to compile my own versions of many of these binaries, especially as I started to support an expanding range of CPU architectures.

UPDATE – For version 3.2 I also had to identify and then figure out how to compile Tim Macinta’s fast MD5 library, to fix the supplied on ARM systems (CrashPlan only distributes libraries for x86). I’m documenting that process here in case more libs are required in future versions. I identified it from the error message in log/engine_error.log and by running objdump -x I could see that the same Java_com_twmacinta_util_MD5_Transform_1native function mentioned in the error was present in the x86 lib but not in my compiled from W3C Libwww. I took the headers from an install of OpenJDK on a regular Ubuntu desktop. I then used the Linux x86 source from the download bundle on Tim’s website – the closest match – and compiled it directly on the syno using the command line from a comment in another version of that source:
gcc -O3 -shared -I/tmp/jdk_headers/include /tmp/fast-md5/src/lib/arch/linux_x86/MD5.c -o

Licence compliance is another challenge – Code 42 Software’s EULA prohibits redistribution of their work. I had to make the syno package download CrashPlan for Linux (after the end user agrees their EULA), then I had to write my own script to extract this archive and mimic their installer, since their installer is interactive



    • In Synology DSM’s Package Center, click Settings and add my package repository:
      Add Package Repository
    • The repository will push its certificate automatically to the NAS, which is used to validate package integrity. Set the Trust Level to Synology Inc. and trusted publishers:
      Trust Level
    • Now browse the Community section in Package Center to install CrashPlan. The repository only displays packages that are compatible with your NAS. If you don’t see CrashPlan in the list, then either your NAS model or your DSM version are not supported at this time. DSM 5.0 is the minimum supported version for this package.
    • Since CrashPlan is a Java application, you will need to install one of my Java SE Embedded packages first (Java 7 or 8). Read the instructions on that page carefully too.
  • If you previously installed CrashPlan manually using the Synology Wiki, you can find uninstall instructions here.


  • The package downloads the CrashPlan installer directly from Code 42 Software, following acceptance of their EULA. I am complying with their wish that no one redistributes it.
  • CrashPlan is installed in headless mode – backup engine only. This is configured by a desktop client, but operates independently of it.
  • The first time you run the server you will need to stop it and restart it before you can connect the client. This is because a config file that’s only created on first run needs to be edited by one of my scripts. The engine is then configured to listen on all interfaces on the default port 4243.
  • Once the engine is running, you can manage it by installing CrashPlan on another computer, and editing the file conf/ in the CrashPlan folder on that computer so that this line:
    is uncommented (by removing the hash symbol) and set to the IP address of your NAS, e.g.:
    Starting with CrashPlan version 4.3.0 you will also need to run this command on your NAS:
    echo `cat /var/lib/crashplan/.ui_info`
    Note those are backticks not quotes. This will give you a port number followed by a GUID:
    Copy this GUID and use this value to replace the GUID in the equivalent file on the computer you want to run the CrashPlan client on:
    C:\ProgramData\CrashPlan\.ui_info (Windows)
    /Library/Application Support/CrashPlan/.ui_info (Mac OS X)
    /var/lib/crashplan/.ui_info (Linux)
    You will not be able to connect the client unless these GUIDs match on the NAS and the client.
    You should disable the CrashPlan service on your computer if you intend only to use the client.
  • Real-time backup does not work on PowerPC systems for some unknown reason, despite many attempts to cross compile libjna, and attempts to use binaries taken from various Debian distros (methods that work for the other supported CPU architectures).
  • The engine daemon script checks the amount of system RAM and scales the Java heap size appropriately (up to the default maximum of 512MB). This can be overridden in a persistent way if you are backing up large backup sets by editing /volume1/@appstore/CrashPlan/syno_package.vars. If you are considering buying a NAS purely to use CrashPlan and intend to back up more than a few hundred GB then I strongly advise buying one of the Intel models which come with 1GB RAM and can be upgraded to 3GB very cheaply. RAM is very limited on the cheaper models. My old DS111 had 256MB of RAM and was able to back up around 60GB with no issues. I have found that a 512MB heap was insufficient to back up more than 2TB of files on a Windows server. It kept restarting the backup engine every few minutes until I increased the heap to 1024MB. Many users of the package have found that they have to increase the heap size or CrashPlan will halt its activity. This can be mitigated by dividing your backup into several smaller sets which are scheduled to be protected at different times
  • The default location for saving friends’ backups is set to /volume1/crashplan/backupArchives (where /volume1 is you primary storage volume) to eliminate the chance of them being destroyed accidentally by uninstalling the package.
  • If you need to manage CrashPlan from a remote location, I suggest you do so using SSH tunnelling as per this support document.
  • The package supports upgrading to future versions while preserving the machine identity, logs, login details, and cache. Upgrades can now take place without requiring a login from the client afterwards.
  • If you remove the package completely and re-install it later, you can re-attach to previous backups. When you log in to the Desktop Client with your existing account after a re-install, you can select “adopt computer” to merge the records, and preserve your existing backups. I haven’t tested whether this also re-attaches links to friends’ CrashPlan computers and backup sets, though the latter does seem possible in the Friends section of the GUI. It’s probably a good idea to test that this survives a package reinstall before you start relying on it. Sometimes, particularly with CrashPlan PRO I think, the adopt option is not offered. In this case you can log into CrashPlan Central and retrieve your computer’s GUID. On the CrashPlan client, double-click on the logo in the top right and you’ll enter a command line mode. You can use the GUID command to change the system’s GUID to the one you just retrieved from your account.
  • The log which is displayed in the package’s Log tab is actually the activity history. If you are trying to troubleshoot an issue you will need to use an SSH session to inspect these log files:
  • When CrashPlan downloads and attempts to run an automatic update, the script will most likely fail and stop the package. This is typically caused by syntax differences with the Synology versions of certain Linux shell commands (like rm, mv, or ps). From package version 0028, attempts to auto-repair these pushed upgrades have been abandoned since the package scripts entirely replace the Code42 launch script.
  • Although CrashPlan’s activity can be scheduled within the application, in order to save RAM some users may wish to restrict running the CrashPlan engine to specific times of day using the Task Scheduler in DSM Control Panel:
    Schedule service start
    This is particularly useful on ARM systems because CrashPlan currently prevents hibernation while it is running (unresolved issue, reported to Code 42). Note that regardless of real-time backup, by default CrashPlan will scan the whole backup selection for changes at 3:00am. Include this time within your Task Scheduler time window or else CrashPlan will not capture file changes which occurred while it was inactive:
    Schedule Service Start

  • If you decide to sign up for one of CrashPlan’s paid backup services as a result of my work on this, please consider donating using the PayPal button on the right.

Package scripts

For information, here are the package scripts so you can see what it’s going to do. You can get more information about how packages work by reading the Synology Package wiki.


#--------CRASHPLAN installer script
#--------package maintained at

[ "${SYNOPKG_PKGNAME}" == "CrashPlan" ] && DOWNLOAD_FILE="CrashPlan_3.7.0_Linux.tgz"
[ "${SYNOPKG_PKGNAME}" == "CrashPlanPRO" ] && DOWNLOAD_FILE="CrashPlanPRO_3.7.0_Linux.tgz"
if [ "${SYNOPKG_PKGNAME}" == "CrashPlanPROe" ]; then
  [ "${WIZARD_VER_370}" == "true" ] && CPPROE_VER="3.7.0"
  [ "${WIZARD_VER_364}" == "true" ] && CPPROE_VER="3.6.4"
  [ "${WIZARD_VER_363}" == "true" ] && CPPROE_VER="3.6.3"
  [ "${WIZARD_VER_3614}" == "true" ] && CPPROE_VER=""
  [ "${WIZARD_VER_353}" == "true" ] && CPPROE_VER="3.5.3"
  [ "${WIZARD_VER_341}" == "true" ] && CPPROE_VER="3.4.1"
  [ "${WIZARD_VER_33}" == "true" ] && CPPROE_VER="3.3"
SYNO_CPU_ARCH="`uname -m`"
[ "${SYNO_CPU_ARCH}" == "x86_64" ] && SYNO_CPU_ARCH="i686"
[ "${SYNO_CPU_ARCH}" == "armv5tel" ] && SYNO_CPU_ARCH="armle"
[ "${SYNO_CPU_ARCH}" == "armv7l" ] && SYNO_CPU_ARCH="armle"
[ "${SYNOPKG_DSM_ARCH}" == "armada375" ] && SYNO_CPU_ARCH="armhf"
[ "${SYNOPKG_DSM_ARCH}" == "comcerto2k" ] && SYNO_CPU_ARCH="armhf"
[ "${SYNOPKG_DSM_ARCH}" == "alpine" ] && SYNO_CPU_ARCH="armhf"
NATIVE_BINS_FILE="`echo ${NATIVE_BINS_URL} | sed -r "s%^.*/(.*)%\1%"`"
TEMP_FOLDER="`find / -maxdepth 2 -path '/volume?/@tmp' | head -n 1`"
#the Manifest folder is where friends' backup data is stored
#we set it outside the app folder so it persists after a package uninstall
MANIFEST_FOLDER="/`echo $TEMP_FOLDER | cut -f2 -d'/'`/crashplan"
UPGRADE_FILES="syno_package.vars conf/my.service.xml conf/service.login conf/service.model"
PUBLIC_FOLDER="`synoshare --get public | sed -r "/Path/!d;s/^.*\[(.*)\].*$/\1/"`"
source /etc/profile

preinst ()
  if [ -z ${JAVA_HOME} ]; then
    echo "Java is not installed or not properly configured. JAVA_HOME is not defined. "
    echo "Download and install the Java Synology package from"
    exit 1

  if [ ! -f ${JAVA_HOME}/bin/java ]; then
    echo "Java is not installed or not properly configured. The Java binary could not be located. "
    echo "Download and install the Java Synology package from"
    exit 1

    WGET_FILENAME="`echo ${WGET_URL} | sed -r "s%^.*/(.*)%\1%"`"
    wget ${WGET_URL}
    if [[ $? != 0 ]]; then
      if [ -d ${PUBLIC_FOLDER} ] && [ -f ${PUBLIC_FOLDER}/${WGET_FILENAME} ]; then
        echo "There was a problem downloading ${WGET_FILENAME} from the official download link, "
        echo "which was \"${WGET_URL}\" "
        echo "Alternatively, you may download this file manually and place it in the 'public' shared folder. "
        exit 1
  exit 0

postinst ()
  #extract CPU-specific additional binaries
  mkdir ${SYNOPKG_PKGDEST}/bin

  #extract main archive
  #extract cpio archive
  cat "${TEMP_FOLDER}/${EXTRACTED_FOLDER}"/${CPI_FILE} | gzip -d -c | ${SYNOPKG_PKGDEST}/bin/cpio -i --no-preserve-owner
  echo "#uncomment to expand Java max heap size beyond prescribed value (will survive upgrades)" > ${SYNOPKG_PKGDEST}/syno_package.vars
  echo "#you probably only want more than the recommended 1024M if you're backing up extremely large volumes of files" >> ${SYNOPKG_PKGDEST}/syno_package.vars
  echo "#USR_MAX_HEAP=1024M" >> ${SYNOPKG_PKGDEST}/syno_package.vars
  echo >> ${SYNOPKG_PKGDEST}/syno_package.vars

  cp ${TEMP_FOLDER}/${EXTRACTED_FOLDER}/scripts/CrashPlanEngine ${OPTDIR}/bin
  cp ${TEMP_FOLDER}/${EXTRACTED_FOLDER}/scripts/run.conf ${OPTDIR}/bin
  mkdir -p ${MANIFEST_FOLDER}/backupArchives    
  #save install variables which Crashplan expects its own installer script to create
  echo BINSDIR=/bin >> ${VARS_FILE}
  echo MANIFESTDIR=${MANIFEST_FOLDER}/backupArchives >> ${VARS_FILE}
  #leave these ones out which should help upgrades from Code42 to work (based on examining an upgrade script)
  #echo INITDIR=/etc/init.d >> ${VARS_FILE}
  #echo RUNLVLDIR=/usr/syno/etc/rc.d >> ${VARS_FILE}
  echo INSTALLDATE=`date +%Y%m%d` >> ${VARS_FILE}
  echo JAVACOMMON=\${JAVA_HOME}/bin/java >> ${VARS_FILE}
  cat ${TEMP_FOLDER}/${EXTRACTED_FOLDER}/install.defaults >> ${VARS_FILE}
  #remove temp files
  #add firewall config
  /usr/syno/bin/servicetool --install-configure-file --package /var/packages/${SYNOPKG_PKGNAME}/scripts/${SYNOPKG_PKGNAME}.sc > /dev/null
  #amend CrashPlanPROe client version
  [ "${SYNOPKG_PKGNAME}" == "CrashPlanPROe" ] && sed -i -r "s/^version=\".*(-.*$)/version=\"${CPPROE_VER}\1/" /var/packages/${SYNOPKG_PKGNAME}/INFO

  exit 0

preuninst ()
  #make sure engine is stopped
  /var/packages/${SYNOPKG_PKGNAME}/scripts/start-stop-status stop
  exit 0

postuninst ()
  if [ -f ${SYNOPKG_PKGDEST}/syno_package.vars ]; then
    source ${SYNOPKG_PKGDEST}/syno_package.vars

  if [ "${LIBFFI_SYMLINK}" == "YES" ]; then
    sed -i "/^LIBFFI_SYMLINK/d" ${SYNOPKG_PKGDEST}/syno_package.vars
  [ -e ${OPTDIR}/lib/* ] && rm ${OPTDIR}/lib/*
  #delete symlinks that no longer resolve
  if [ ! -e /lib/ ]; then
    [ -L /lib/ ] && rm /lib/
  if [ ! -e /lib/ ]; then
    [ -L /lib/ ] && rm /lib/
    #repair symlink on DSM 5.0 now that it's included by default
    ln -s /lib/
  #remove firewall config
  if [ "${SYNOPKG_PKG_STATUS}" == "UNINSTALL" ]; then
    /usr/syno/bin/servicetool --remove-configure-file --package ${SYNOPKG_PKGNAME}.sc > /dev/null

  #remove legacy daemon user and homedir
  DAEMON_USER="`echo ${SYNOPKG_PKGNAME} | awk {'print tolower($_)'}`"
  synouser --del ${DAEMON_USER}
  [ -e /var/services/homes/${DAEMON_USER} ] && rm -r /var/services/homes/${DAEMON_USER}
 exit 0

preupgrade ()
  #make sure engine is stopped
  /var/packages/${SYNOPKG_PKGNAME}/scripts/start-stop-status stop

  #if identity from legacy package version exists migrate it
  DAEMON_USER="`echo ${SYNOPKG_PKGNAME} | awk {'print tolower($_)'}`"
  if [ -d ${DAEMON_HOME}/.crashplan ]; then
    mkdir -p ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig/conf
    mkdir -p /var/lib/crashplan
    mv ${DAEMON_HOME}/.crashplan/.identity /var/lib/crashplan/
    chown -R root:root /var/lib/crashplan/

  #if identity exists back up config
  if [ -f /var/lib/crashplan/.identity ]; then
    mkdir -p ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig/conf

  #if config data exists back it up  
  if [ "${CONFIG_MIGRATION}" == "true" ]; then
      if [ -f ${OPTDIR}/${FILE_TO_MIGRATE} ]; then
      if [ -d ${OPTDIR}/${FOLDER_TO_MIGRATE} ]; then

  exit 0

postupgrade ()
  #use the migrated identity and config data from the previous version
  if [ -f ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig/conf/my.service.xml ]; then
      if [ -f ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig/${FILE_TO_MIGRATE} ]; then
    if [ -d ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig/${FOLDER_TO_MIGRATE} ]; then
    rmdir ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig/conf
    rmdir ${SYNOPKG_PKGDEST}/../${SYNOPKG_PKGNAME}_data_mig
    #make CrashPlan log entry
    TIMESTAMP="`date "+%D %I:%M%p"`"
    echo "I ${TIMESTAMP} Synology Package Center updated ${SYNOPKG_PKGNAME} to version ${SYNOPKG_PKGVER}" >> ${LOG_FILE}

    #fix permissions on migrated settings and manifest from legacy package versions which used a daemon user account
    chown -R root:root ${SYNOPKG_PKGDEST}
    if [ -f ${SYNOPKG_PKGDEST}/conf/my.service.xml ]; then
      MANIFEST_FOLDER=`cat ${SYNOPKG_PKGDEST}/conf/my.service.xml | grep "<manifestPath>" | cut -f2 -d'>' | cut -f1 -d'<'`
      chown -R root:root ${MANIFEST_FOLDER}

    #tidy up some legacy settings
    sed -i "/^CRON_SYNOPKG_PKGNAME/d" ${SYNOPKG_PKGDEST}/syno_package.vars
    sed -i "/^CRON_SYNOPKG_PKGDEST/d" ${SYNOPKG_PKGDEST}/syno_package.vars
  exit 0


#--------CRASHPLAN start-stop-status script
#--------package maintained at

TEMP_FOLDER="`find / -maxdepth 2 -path '/volume?/@tmp' | head -n 1`"
MANIFEST_FOLDER="/`echo $TEMP_FOLDER | cut -f2 -d'/'`/crashplan" 
PKG_FOLDER="`dirname $0 | cut -f1-4 -d'/'`"
DNAME="`dirname $0 | cut -f4 -d'/'`"
JAVA_MIN_HEAP=`grep "^${CFG_PARAM}=" "${OPTDIR}/bin/${ENGINE_CFG}" | sed -r "s/^.*-Xms([0-9]+)[Mm] .*$/\1/"` 
SYNO_CPU_ARCH="`uname -m`"
TIMESTAMP="`date "+%D %I:%M%p"`"
source ${OPTDIR}/install.vars
source /etc/profile
source /root/.profile

start_daemon ()
  #check persistent variables from syno_package.vars
  if [ -f ${OPTDIR}/syno_package.vars ]; then
    source ${OPTDIR}/syno_package.vars
  USR_MAX_HEAP=`echo $USR_MAX_HEAP | sed -e "s/[mM]//"`

  #do we need to restore the identity file - has a DSM upgrade scrubbed /var/lib/crashplan?
  if [ ! -e /var/lib/crashplan ]; then
    mkdir /var/lib/crashplan
    [ -e ${OPTDIR}/conf/var-backup/.identity ] && cp ${OPTDIR}/conf/var-backup/.identity /var/lib/crashplan/

  #fix up some of the binary paths and fix some command syntax for busybox 
  #moved this to from because Code42 push updates and these
  #new scripts will need this treatment too
  find ${OPTDIR}/ -name "*.sh" | while IFS="" read -r FILE_TO_EDIT; do
    if [ -e ${FILE_TO_EDIT} ]; then
      #this list of substitutions will probably need expanding as new CrashPlan updates are released
      sed -i "s%^#!/bin/bash%#!$/bin/sh%" "${FILE_TO_EDIT}"
      sed -i -r "s%(^\s*)(/bin/ps|ps) [^w][^\|]*\|%\1/bin/ps w \|%" "${FILE_TO_EDIT}"
      sed -i -r "s%\`ps [^w][^\|]*\|%\`ps w \|%" "${FILE_TO_EDIT}"
      sed -i -r "s%^ps [^w][^\|]*\|%ps w \|%" "${FILE_TO_EDIT}"
      sed -i "s/rm -fv/rm -f/" "${FILE_TO_EDIT}"
      sed -i "s/mv -fv/mv -f/" "${FILE_TO_EDIT}"

  #use this daemon init script rather than the unreliable Code42 stock one which greps the ps output
  sed -i "s%^ENGINE_SCRIPT=.*$%ENGINE_SCRIPT=$0%" ${OPTDIR}/bin/

  #any downloaded upgrade script will usually have failed until the above changes are made so we need to
  #find it and start it, if it exists
  UPGRADE_SCRIPT=`find ${OPTDIR}/upgrade -name ""`
  if [ -n "${UPGRADE_SCRIPT}" ]; then
    rm ${OPTDIR}/*.pid
    #make CrashPlan log entry
    echo "I ${TIMESTAMP} Synology repairing upgrade in ${SCRIPT_HOME}" >> ${DLOG}

    mv ${SCRIPT_HOME}/upgrade.log ${SCRIPT_HOME}/upgrade.log.old
    cd ${SCRIPT_HOME}
    exit 0

  #updates may also overwrite our native binaries
  [ -e ${OPTDIR}/bin/ ] && cp -f ${SYNOPKG_PKGDEST}/bin/ ${OPTDIR}/lib
  [ -e ${OPTDIR}/bin/ ] && cp -f ${OPTDIR}/bin/ ${OPTDIR}/
  cp -f ${OPTDIR}/bin/jna-3.2.5.jar ${OPTDIR}/lib

  #create or repair symlink if a DSM upgrade has removed it - PowerPC only
  if [ -e ${OPTDIR}/lib/ ]; then
    if [ ! -e /lib/ ]; then
      #if it doesn't exist, but is still a link then it's a broken link and should be deleted first
      [ -L /lib/ ] && rm /lib/
      ln -s ${OPTDIR}/lib/ /lib/

  #set appropriate Java max heap size
  RAM=$((`free | grep Mem: | sed -e "s/^ *Mem: *\([0-9]*\).*$/\1/"`/1024))
  if [ $RAM -le 128 ]; then
  elif [ $RAM -le 256 ]; then
  elif [ $RAM -le 512 ]; then
  elif [ $RAM -le 1024 ]; then
  elif [ $RAM -gt 1024 ]; then
  if [ $USR_MAX_HEAP -gt $JAVA_MAX_HEAP ]; then
  if [ $JAVA_MAX_HEAP -lt $JAVA_MIN_HEAP ]; then
    #can't have a max heap lower than min heap (ARM low RAM systems)
  sed -i -r "s/(^${CFG_PARAM}=.*) -Xmx[0-9]+[mM] (.*$)/\1 -Xmx${JAVA_MAX_HEAP}m \2/" "${OPTDIR}/bin/${ENGINE_CFG}"
  #disable the use of the x86-optimized external Fast MD5 library if running on ARM and PPC CPUs
  #seems to be the default behaviour now but that may change again
  [ "${SYNO_CPU_ARCH}" == "x86_64" ] && SYNO_CPU_ARCH="i686"
  if [ "${SYNO_CPU_ARCH}" != "i686" ]; then
    grep "^${CFG_PARAM}=.*c42\.native\.md5\.enabled" "${OPTDIR}/bin/${ENGINE_CFG}" > /dev/null \
     || sed -i -r "s/(^${CFG_PARAM}=\".*)\"$/\1 -Dc42.native.md5.enabled=false\"/" "${OPTDIR}/bin/${ENGINE_CFG}"

  #move the Java temp directory from the default of /tmp
  grep "^${CFG_PARAM}=.*Djava\.io\.tmpdir" "${OPTDIR}/bin/${ENGINE_CFG}" > /dev/null \
   || sed -i -r "s%(^${CFG_PARAM}=\".*)\"$%\1${TEMP_FOLDER}\"%" "${OPTDIR}/bin/${ENGINE_CFG}"

  #now edit the XML config file, which only exists after first run
  if [ -f ${OPTDIR}/conf/my.service.xml ]; then

    #allow direct connections from CrashPlan Desktop client on remote systems
    #you must edit the value of serviceHost in conf/ on the client you connect with
    #users report that this value is sometimes reset so now it's set every service startup 
    sed -i "s/<serviceHost>127\.0\.0\.1<\/serviceHost>/<serviceHost>0\.0\.0\.0<\/serviceHost>/" "${OPTDIR}/conf/my.service.xml"
    #this change is made only once in case you want to customize the friends' backup location
    if [ "${MANIFEST_PATH_SET}" != "True" ]; then

      #keep friends' backup data outside the application folder to make accidental deletion less likely 
      sed -i "s%<manifestPath>.*</manifestPath>%<manifestPath>${MANIFEST_FOLDER}/backupArchives/</manifestPath>%" "${OPTDIR}/conf/my.service.xml"
      echo "MANIFEST_PATH_SET=True" >> ${OPTDIR}/syno_package.vars

    #since CrashPlan version 3.5.3 the value javaMemoryHeapMax also needs setting to match that used in bin/run.conf
    sed -i -r "s%(<javaMemoryHeapMax>)[0-9]+[mM](</javaMemoryHeapMax>)%\1${JAVA_MAX_HEAP}m\2%" "${OPTDIR}/conf/my.service.xml"
    echo "Check the package log to ensure the package has started successfully, then stop and restart the package to allow desktop client connections." > "${SYNOPKG_TEMP_LOGFILE}"

  #increase the system-wide maximum number of open files from Synology default of 24466
  echo "65536" > /proc/sys/fs/file-max

  #raise the maximum open file count from the Synology default of 1024 - thanks Casper K. for figuring this out
  ulimit -n 65536

  source ${OPTDIR}/bin/run.conf
  source ${OPTDIR}/install.vars
  cd ${OPTDIR}
  $JAVACOMMON $SRV_JAVA_OPTS -classpath $FULL_CP com.backup42.service.CPService > ${OPTDIR}/log/engine_output.log 2> ${OPTDIR}/log/engine_error.log &
  if [ $! -gt 0 ]; then
    echo $! > $PID_FILE
    renice 19 $!
    if [ -z "${SYNOPKG_PKGDEST}" ]; then
      #script was manually invoked, need this to show status change in Package Center      
      [ -e ${PKG_FOLDER}/enabled ] || touch ${PKG_FOLDER}/enabled
    echo "${DNAME} failed to start, check ${OPTDIR}/log/engine_error.log" > "${SYNOPKG_TEMP_LOGFILE}"
    echo "${DNAME} failed to start, check ${OPTDIR}/log/engine_error.log" >&2
    exit 1

stop_daemon ()
  echo "I ${TIMESTAMP} Stopping ${DNAME}" >> ${DLOG}
  kill `cat ${PID_FILE}`
  wait_for_status 1 20 || kill -9 `cat ${PID_FILE}`
  rm -f ${PID_FILE}
  if [ -z ${SYNOPKG_PKGDEST} ]; then
    #script was manually invoked, need this to show status change in Package Center
    [ -e ${PKG_FOLDER}/enabled ] && rm ${PKG_FOLDER}/enabled
  #backup identity file in case DSM upgrade removes it
  [ -e ${OPTDIR}/conf/var-backup ] || mkdir ${OPTDIR}/conf/var-backup 
  cp /var/lib/crashplan/.identity ${OPTDIR}/conf/var-backup/

daemon_status ()
  if [ -f ${PID_FILE} ] && kill -0 `cat ${PID_FILE}` > /dev/null 2>&1; then
  rm -f ${PID_FILE}
  return 1

wait_for_status ()
  while [ ${counter} -gt 0 ]; do
    [ $? -eq $1 ] && return
    let counter=counter-1
    sleep 1
  return 1

case $1 in
    if daemon_status; then
      echo ${DNAME} is already running with PID `cat ${PID_FILE}`
      exit 0
      echo Starting ${DNAME} ...
      exit $?

    if daemon_status; then
      echo Stopping ${DNAME} ...
      exit $?
      echo ${DNAME} is not running
      exit 0

    exit $?

    if daemon_status; then
      echo ${DNAME} is running with PID `cat ${PID_FILE}`
      exit 0
      echo ${DNAME} is not running
      exit 1

    echo "${DLOG}"
    exit 0

    echo "Usage: $0 {start|stop|status|restart}" >&2
    exit 1


install_uifile & upgrade_uifile

    "step_title": "Client Version Selection",
    "items": [
        "type": "singleselect",
        "desc": "Please select the CrashPlanPROe client version that is appropriate for your backup destination server:",
        "subitems": [
            "key": "WIZARD_VER_370",
            "desc": "3.7.0",
            "defaultValue": true
            "key": "WIZARD_VER_364",
            "desc": "3.6.4",
            "defaultValue": false
            "key": "WIZARD_VER_363",
            "desc": "3.6.3",
            "defaultValue": false
            "key": "WIZARD_VER_3614",
            "desc": "",
            "defaultValue": false
            "key": "WIZARD_VER_353",
            "desc": "3.5.3",
            "defaultValue": false
            "key": "WIZARD_VER_341",
            "desc": "3.4.1",
            "defaultValue": false
            "key": "WIZARD_VER_33",
            "desc": "3.3",
            "defaultValue": false


  • 0031 Added TCP 4242 to the firewall services (computer to computer connections)
  • 0030 Fixed show-stopping issue with version 0029 for systems with more than one volume
  • 0029 Updated to CrashPlan version 3.7.0, improved detection of temp folder (prevent use of /var/@tmp), added support for Annapurna Alpine AL514 CPU (armhf) in DS2015xs, added support for Marvell Armada 375 CPU (armhf) in DS215j, abandoned practical efforts to try to support Code42’s upgrade scripts, abandoned inotify support (realtime backup) on PowerPC after many failed attempts with self-built and pre-built jtux and jna libraries, back-merged older libffi support for old PowerPC binaries after it was removed in 0028 re-write
  • 0028 Substantial re-write:
    Updated to CrashPlan version 3.6.4
    DSM 5.0 or newer is now required taken from Debian JNA 3.2.7 package with dependency on newer (included in DSM 5.0)
    jna-3.2.5.jar emptied of irrelevant CPU architecture libs to reduce size
    Increased default max heap size from 512MB to 1GB on systems with more than 1GB RAM
    Intel CPUs no longer need the awkward glibc version-faking shim to enable inotify support (for real-time backup)
    Switched to using root account – no more adding account permissions for backup, package upgrades will no longer break this
    DSM Firewall application definition added
    Tested with DSM Task Scheduler to allow backups between certain times of day only, saving RAM when not in use
    Daemon init script now uses a proper PID file instead of Code42’s unreliable method of using grep on the output of ps
    Daemon init script can be run from the command line
    Removal of bash binary dependency now Code42’s CrashPlanEngine script is no longer used
    Removal of nice binary dependency, using BusyBox’s renice
    Unified ARMv5 and ARMv7 external binary package (armle)
    Added support for Mindspeed Comcerto 2000 CPU (comcerto2k – armhf) in DS414j
    Added support for Intel Atom C2538 (avoton) CPU in DS415+
    Added support to choose which version of CrashPlan PROe client to download, since some servers may still require legacy versions
    Switched to .tar.xz for native binaries to reduce hosting overhead
  • 0027 Fixed open file handle limit for very large backup sets (ulimit fix)
  • 0026 Updated all CrashPlan clients to version 3.6.3, improved handling of Java temp files
  • 0025 glibc version shim no longer used on Intel Synology models running DSM 5.0
  • 0024 Updated to CrashPlan PROe and added support for PowerPC 2010 Synology models running DSM 5.0
  • 0023 Added support for Intel Atom Evansport and Armada XP CPUs in new DSx14 products
  • 0022 Updated all CrashPlan client versions to 3.5.3, compiled native binary dependencies to add support for Armada 370 CPU (DS213j), now updates the new javaMemoryHeapMax value in my.service.xml to the value defined in syno_package.vars
  • 0021 Updated CrashPlan to version 3.5.2
  • 0020 Fixes for DSM 4.2
  • 018 Updated CrashPlan PRO to version 3.4.1
  • 017 Updated CrashPlan and CrashPlan PROe to version 3.4.1, and improved in-app update handling
  • 016 Added support for Freescale QorIQ CPUs in some x13 series Synology models, and installer script now downloads native binaries separately to reduce repo hosting bandwidth, PowerQUICC PowerPC processors in previous Synology generations with older glibc versions are not supported
  • 015 Added support for easy scheduling via cron – see updated Notes section
  • 014 DSM 4.1 user profile permissions fix
  • 013 implemented update handling for future automatic updates from Code 42, and incremented CrashPlanPRO client to release version 3.2.1
  • 012 incremented CrashPlanPROe client to release version 3.3
  • 011 minor fix to allow a wildcard on the cpio archive name inside the main installer package (to fix CP PROe client since Code 42 Software had amended the cpio file version to
  • 010 minor bug fix relating to daemon home directory path
  • 009 rewrote the scripts to be even easier to maintain and unified as much as possible with my imminent CrashPlan PROe server package, fixed a timezone bug (tightened regex matching), moved the script-amending logic from to with it now applying to all .sh scripts each startup so perhaps updates from Code42 might work in future, if wget fails to fetch the installer from Code42 the installer will look for the file in the public shared folder
  • 008 merged the 14 package scripts each (7 for ARM, 7 for Intel) for CP, CP PRO, & CP PROe – 42 scripts in total – down to just two! ARM & Intel are now supported by the same package, Intel synos now have working inotify support (Real-Time Backup) thanks to rwojo’s shim to pass the glibc version check, upgrade process now retains login, cache and log data (no more re-scanning), users can specify a persistent larger max heap size for very large backup sets
  • 007 fixed a bug that broke CrashPlan if the Java folder moved (if you changed version)
  • 006 installation now fails without User Home service enabled, fixed Daylight Saving Time support, automated replacing the ARM symlink which is destroyed by DSM upgrades, stopped assuming the primary storage volume is /volume1, reset ownership on /var/lib/crashplan and the Friends backup location after installs and upgrades
  • 005 added warning to restart daemon after 1st run, and improved upgrade process again
  • 004 updated to CrashPlan 3.2.1 and improved package upgrade process, forced binding to each startup
  • 003 fixed ownership of /volume1/crashplan folder
  • 002 updated to CrashPlan 3.2
  • 001 intial public release

3,853 thoughts on “CrashPlan packages for Synology NAS

  1. BigBen

    [English Message]

    on a Synology DS 213+ no longer does the current version of CrashPlan. The old version 3.7 has the Workarround the website still flawless works.

    On the Synology system no Java Manager available. On the Java SE Embedded System 7 has been installed.

    Can anyone make the old version 3.7 from Synology Package CrashPlan available?

    [German Message]

    auf einem Synology DS 213+ funktioniert die aktuelle Version von CrashPlan leider nicht mehr. Die alte Version 3.7 hat mit dem Workarround der Webseite noch fehlerfrei funktioniert.

    Auf dem Synology System ist leider kein Java Manager vorhanden. Auf dem System ist Java SE Embedded 7 installiert worden.

    Kann mir jemand die alte Version 3.7 vom Synology-Paket CrashPlan zur Verfügung stellen?

    1. BigBen

      [English message]
      When starting CrashPlan is stopped again immediately.

      [german message]
      Beim Starten wird CrashPlan unmittelbar wieder gestoppt.

  2. Chris

    Has anyone had success with using this package with the Ceejay UK/EU Cloud? Is it a case of installing this package in the same way and then configuring it using the ceejay build downloaded from their website? see for more. Thanks

  3. Chris Brandhorst

    Hi, I’m trying to install CrashPlan on my brand new Synology. It fails with the following error in synopkg.log:

    Begin: /bin/tar xf /volume1/@tmp/@synopkg/@download/CrashPlan/@SYNOPKG_DOWNLOAD_CrashPlan -C /volume1/@tmp/558AC2F17A2B25FF/ conf –no-same-owner
    /bin/tar: conf: Not found in archive
    /bin/tar: Exiting with failure status due to previous errors

    Upon inspecting the downloaded package in the @download folder, indeed the file “conf” is not present. Anything I’m doing wrong here?

    1. Chris Brandhorst

      Just found that setting the Trust Level to “Any publisher” migitates this issue.

      So it’s now running on the new DS715!

  4. salid

    Since the latest Synology Update the package does not backup during the night automatically. My cronjob starts the package, but there is no backup happening.
    I need to start the GUI and press the Settings -> Backup -> Verify Selection “Now” Button, to start the backup.
    Does anyone else have the same problem?

  5. Wade

    Ever since the last update, I’ve been getting emails from Crashplan that my client has not connected in X days, even though it appears to be connecting fine whenever I manually run it. When I looked at the logs this morning the times are wrong, and appear to be listed in the wrong order, so I’m not sure what’s going on. I have it set on a task schedule to start the service at 12:00AM and stop at 4:00AM, but the log says it’s starting at 7:00AM and stopping at 4:00AM. It also shows the 4:00AM entry AFTER the 7:00AM entry, which doesn’t make any sense. I decide to test the schedule by manually running the task this morning at 8:00AM and the log entry said it was 3:00PM. I logged into the Crashplan site and it says it was recently connected and 100% backed up, so everything appears to be connecting fine. I verified the date/time is correct in the DSM settings, so I’m not sure where to go next.

    1. patters Post author

      Yes I was also receiving those emails even though everything was fine on the NAS. Strange. There is a Java package issue relating the timezones though. They changed a file in DSM 5.2 which my script uses to do the timezone modern name to legacy name conversion. I still need to fix that.

  6. Bagu

    I had a problem with crashplan on my ds414.
    Crashplan start and stop in a loop without sending anything.
    Here is the solution :
    -changed the file /volume1/@appstore/CrashPlan/syno_package.vars
    -remove the # in front of the command: #USR_MAX_HEAP=XXXX
    -change it by USR_MAX_HEAP=768M
    -restart Crashplan

    Now, it work like a charm

    1. ethuesen

      This worked for me as well.
      Though, first time I tried it did not work. I had to adjust the fille permission settings first.

  7. graabein

    Hi! Any chance the “ANNAPURNALABS Alpine AL212″ CPU in the new DS215+ will be supported?


  8. clarkey

    Anyone else having trouble with the time zones?
    My backup schedules are using US time and not the local time the NAS is set to (Australia)

  9. La Lumieres

    Useful information. Fortunate me I discovered your web
    site by chance, and I’m surprised why this twist of fate
    didn’t came about in advance! I bookmarked it.

  10. Edouard

    Sorry I’m a little newbie but I couldn’t install CrashPlan on my DS415+ (DSM 5.2-5565 Update 2), I installed the the latest Java SE 7 (jdk-7u80-linux-i586) but when I want to install Crashplan (4.2.0-0031) I have only a message error “Failed to install ‘CrashPlan” any idea what’s wrong?

  11. frankyon

    Is there a fix available for crashplan 4.3..? the service is running von the nas but i can’t connect by client.. it’s loading and nothing happened..

  12. catnip

    auto upgrade to version 4.3.0 has broke my installed, tried one the fixes online from chris nelson dot ca that got it running on the NAS again, but I am unable to connect to it via the app to configure it

  13. Kevin

    It seems there is a new update being pushed 4.3.0. Th update on the NAS failed so I updated manually. However, for some reason, crash plan on the PC won’t connect to the NAS. Curious if anyone is having any issues.

    1. Troy


      I’m seeing the exact same issue. I used the manual instructions that were posted previously to update the server side which seems to be running fine, but as Kevin says the client will no longer connect to the server. It doesn’t error out saying “can’t connect to backup engine retry” it literally just hangs there. I even went to CrashPlan website and thought maybe they upgraded the client so I reinstalled to make sure it matched the server but it still does not want to connect to the server now.

      1. Kevin

        Troy they did update the client to version 4.3.0 also. Just like you I updated the client and it just hangs. Crashplan on the NAS doesn’t show any errors. Very strange.

      2. ScottieP

        I’m getting the same issue, I’ve tried re-installed about 6 times now- once the desktop client kicks out and then requires you to log back in it say “Upgrading Crashplan” which then kills the service on my Syno- This can be fixed, but then I’m in the same boat- I try to open the desktop app and it just hangs at the splash screen- I noticed you can update the paths to backup on the website when you click into it- but I don’t know if I trust it… I might be giving up my subscription this year…. Especially since they removed network share support a few versions back. Everything is a hack now. Carbonite at least will allow for file shares… better than nothing.

  14. YuryG

    01/07/15 Crashplan rekeased an update to 4.2 designated as 4.2.1
    It downloads and installs automaticalty. I found no way of stopping it form downloaing and installing.
    Anyway, after instalation the service is listed as STOPPED and i have nor found a way to make it start again.

  15. Eric

    I believe I’ve figured out the Client hangs that some people have seen with the update to 0031 and the 4.3.0 client. I had this problem as well, and had a perfectly working installation until the update. Here’s what I found.

    In the /var/packages/CrashPlan/target/log/service.log.0 on the DSM I found the following happen while my client was trying to connect.

    UserActionRequest: StatusQueryMessage[696203082971748058] CPD|874a53dc-20a5-56a1-cb4f-12adf2252455|eric|/Users/eric|
    Loaded port=4243 and token from location=/var/lib/crashplan/.ui_info
    Received status request message with invalid token.

    At that point it would disconnect and the remote client would hang. Bad stuff, but very telling.

    I took a look at the .ui_info file referenced above and what do you know, it has a GUID formatted exactly like the first like above from the log, after CPD|, but it’s different. The .ui_info file is formatted by port, a comma, then the GUID (4243,).

    The one in the log is what my client sends, the one in the .ui_info file is what the DSM is expecting. Doesn’t get it so things fail. Let’s try and experiment.

    To fix it I made a backup of the /var/lib/crashplan/.ui_info file, then I used vi to replace the GUID the DSM had to match the one my client sent, take from the log entry. Make sure you only paste in over the old GUID, and not the port as well. In the end it should be 4243,. Save and restart CrashPlan on the DSM.

    Bingo, client now connects. Something went whacky here. Likely the 4.3.0 client installation (I’m on a Mac) generated a new GUID during the client install.

    Note: I modified the GUID in the above log snippit, so it’s not really mine, but the same format. Don’t use what’s above, find your own and replace it.

    1. Stanthewizzard

      Eric … you are a Genius
      This is working. I logged to crashplan. Entered my login pass and everything is fine …again

      Thanks thanks thanks

    2. slidermike

      very nice and good work to sleuth that down. However in my case it does not quite match up. I do not do the client to NAS backup but rather the paid subscription for 1 pc (NAS) to crashplan central. When I see the output it shows differently than yours. I don’t get the CPD followed by the hash and then port 4243.
      I guess I have to wait for Patters or another persistent party to make the NAS to crashplan central (headend to NAS) portion work again.
      I am beginning to wish I had not pre-purchased the 3 year subscription. I would at this point probably migrate over to the Amazon/Glacier solution since its built in and really the charges are on the restore anyway.

      1. Eric

        Hi slidermike,

        Interesting, because I do the same thing you do. I have a PC subscription that lives on my NAS. I only connect via the client on my Mac to manage the NAS installation. I do not push backups from my client, only the NAS. In fact I’d be willing to bet that’s what most do.

        Don’t give up yet, it’ll work. If your CP headless is up and running on the Syno then that’s half the battle. See what’s in the service log I mentioned in the post above. If you’re getting invalid token errors then the symptoms match. See patters updated release notes from there. If it’s not an invalid token error then you’re looking at something different.

    3. Kevin

      Thanks a lot Eric !! That worked for me also. I would have never figured that out. Thanks again.

    4. marselaar

      Thanks Eric, this works! I am getting a bit annoyed by all the hassle everytime something changes, but I am really happy that I can always find a solution here.

    5. Troy

      UserActionRequest: StatusQueryMessage[696203082971748058] CPD|874a53dc-20a5-56a1-cb4f-12adf2252455|eric|/Users/eric|
      Loaded port=4243 and token from location=/var/lib/crashplan/.ui_info
      Received status request message with invalid token.

      At that point it would disconnect and the remote client would hang. Bad stuff, but very telling.
      I took a look at the .ui_info file referenced above and what do you know, it has a GUID formatted exactly like the first like above from the log, after CPD|, but it’s different. The .ui_info file is formatted by port, a comma, then the GUID (4243,).

      Eric — Brilliant. That fix worked! I wonder why the GUID’s got out of sync like that. That’s never happened before. I hope that is something Patters can fix/check in the next update of the package because I’m sure the average person on this list will have a hell of a time combing through their logs to find their proper GUID and doing the steps you outlined.

      1. patters Post author

        It’s better to use the GUID from your NAS and apply that to the client’s .ui_info file and not the other way around. Then you can manage your NAS from multiple PCs. I verified that this works.

      2. Eric

        Patters is right here, it’s better to apply the NAS GUID to the client, if your client is on Windows. My client is on a Mac and I couldn’t for the life of me find the same file on my install, so I went the only way I had available. Follow Patters here, I just gave the nudge, he’s the expert.

    6. cbamber72

      Perfect, well found. I double checked this and the file (/var/liv/crashplan/.ui_info)on the DM should match the one on your desktop if you sign in with the same account (i have upto 10 pc account) you can find it here:


      1. Brian Mackenzie

        Fantastic work Eric – a very quick resolution given the obscure nature of the problem! I suspect Code42 have spotted the bug in the original v4.3 update as it seems another update was pushed today – 1427864410430.* as opposed to the original 1427864400430.* (9th digit differs). Seems exceptionally quick that – I can only imaging they’d goosed the orignal.

        Thanks again Eric – it’s good to be back in business.

    7. Marcel

      Did you have to change the logging detail in ? I didn’t see that message until I set all parameters to DEBUG. Now it’s working again. Thanks!

      1. Eric

        That’s interesting. No, I didn’t change the log level on mine to see the message. I’ve been on INFO for my log level the entire time. That’s a good tip though for any that might not be seeing the message, but are having the same symptoms.

        For those that might stumble on this Marcel is talking about the /var/packages/CrashPlan/target/conf/ file. In it is the log levels for various events. INFO|WARN|DEBUG etc. I have no idea which one (root?) would be the one to turn up if needed.

        Just remember, if you turn them up to debug, turn them back down when done. Don’t need a NAS full of DEBUG logs. :)

  16. Adam

    There is an error in one of the log files on the server moaning about an invalid token id, any ideas patters?

    1. slidermike

      My DS1512+ wont start the service now after it auto updated yesterday. The logs shows “Synology repairing upgrade in /var/packages/CrashPlan/target/upgrade/1427864400430

      Any idea how to fix this?

      1. Kevin

        You have to update manually using the directions posted in this thread. However, don’t bother at this point, because the client can’t connect to the NAS after being updated for some reason.

      2. slidermike

        Kevin, thank you for the response. Since I don’t need the client connection at this point I do want to get the service running so the backups continue on the NAS to Crashplan central. Which manual directions are you referring to? Are they the ones by Bagu about changing the heap size or some other ones I am missing?

      3. slidermike

        Kevin, thank you very much for your help. Those directions were spot on. I don’t need to attach the client at the moment as the directories I backup to Crashplan central are pretty static.

      4. Kevin

        Mike do you mind telling me how you’re doing it without the client ? I would be very interested in trying it myself. Thanks.

      5. slidermike

        It is my understanding that all the “work” is done on the Syno as a headless service. I use the pc/client to configure the folders & schedule the backups to run from x:xx – x:xx.
        Once you configure the Syno service to run like that, it is my understanding the client or head/gui isn’t needed for the operations to function on the NAS. So if I understand it correctly my syno should go back to the regular schedule I put it on.
        I don’t use the syno as the backup destination rather, I backup 3 NAS folders to crashplan under the 1 pc paid rate for unlimited storage on their servers.
        Unless I do not actually understand how it works in which case the service is running on the syno but in reality it wont be backing any data up to crashplan central.

      6. ties


        That is how I understand it as working as well. I’ll know tonight after everything scheduled runs or doesn’t… :)

    2. Eric

      I figured out the client hang issues, posted them last night, but they are in moderation still. Essentially the 4.3.0 client seems to be changing the GUID client side, and during the initial handshake between the client and the DSM the GUID is passed and compared. My previous comment has the process to update the GUID.

      1. patters Post author

        I have created a new package which installs/upgrades to 4.3 but I get this same issue. The remote client just times out. However, I don’t see the log entry you reported in /var/packages/CrashPlan/target/log/service.log.0. There’s no evidence that the client is connecting at all. On the NAS if I use netstat it looks like CrashPlan has bound preferentially to an IPv6-to-4 tunnel adapter address or something, not IPv4:
        DS214Play> netstat -na | grep LISTEN | grep 42
        tcp 0 0 ::%134877541:4242 ::%134877541:* LISTEN
        tcp 0 0 ::%134877541:4243 ::%134877541:* LISTEN

        It’s not even similar to my NAS’s IPv6 address. I tried disabling IPv6 in DSM’s Network settings and rebooting but this didn’t make any difference. Anyone know what this odd binding could be?

      2. slidermike

        Patters, I get the same results as you with netstat. It is ONLY listening on ipv6.
        Nas1> netstat -na | grep LISTEN | grep 42
        tcp 0 0 ::%134877389:4242 ::%134877389:* LISTEN
        tcp 0 0 ::%134877389:4243 ::%134877389:* LISTEN

      3. patters Post author

        Got it. I need to add “” to the launch parameters in run.conf.
        Client is still not attempting to connect though.

        EDIT – Ok, figured it out. I had an SSH session open with port 4243 tunnelled to my NAS. CrashPlan 4.3 will avoid using 4243 for the console if the port is already in use, and changing the port number in .ui_info doesn’t seem to influence the client. Once I reinstalled the client with port 4243 available I was able to connect.

      4. Marcel

        IPv6 here as well. I upgraded the client manually to 4.3.0, but no connection is made.

        I created an SSH tunnel. This tunnel forwards connection on a random port on my local machine to ‘localhost’ on my DS413. When I telnet to localhost from my local client to that port, I see entries in the logfile on my NAS :

        [07.02.15 18:38:58.361 INFO Sel-UI-A com.backup42.service.ui.UIController ] UISession Created – 696446962803714373
        [07.02.15 18:39:12.770 INFO Factory$Notifier-UI0 com.backup42.service.ui.UIController ] UISession Ended after less than a minute – 696446962803714373
        [07.02.15 18:39:12.771 INFO Factory$Notifier-UI0 backup42.service.backup.BackupController] UI:: AUTO IDLE… lowBandwidth=25600 B/s, activeThrottleRate=20
        [07.02.15 18:39:12.771 INFO Factory$Notifier-UI0 com.backup42.common.command.CliExecutor ] RUN COMMAND: auto.idle > CommandResult@19014278[ auto.idle, success=true, result=null ]

        When I configure the Crashplan client to connect to localhost on the tunnel port, nothing appears in the log. It looks like the client is not even trying to connect. Strange.

  17. cbamber72

    the package auto-updates from 4.2 to 4.3 very quickly now, and then gets stuck, as others have said the fix that has been posted before (terminal commands to upzip folders) gets the service running on the NAS box, but the client app just hangs and never gets to the timeout.

    the client UI log ends as follows,but the client app still looks like it it loading:

    07.01.15 09:42:21.096 INFO main com.backup42.desktop.SplashWindow ] SHOW SplashWindow
    [07.01.15 09:42:21.157 INFO main com.code42.messaging.nio.MessageProvider] MessageProvider(): options=MessageProviderOptions[name = UI, numWorkers = 2, socketSendBufferSize = -1, socketReceiveBufferSize = -1, securityEnabled = false, securityProviderPK = true, numSecurityProviderWorkers = 1, symmetricAlgorithm = AES, siteLocalTrafficClass = 0, trafficClass = 0, tcpNoDelay = false, watchNetworkInterfaces = false, discardMessages = false, inboundMessageBufferSize = 0, outboundMessageBufferSize = 0, siteLocalInboundMessageBufferSize = 0, siteLocalOutboundMessageBufferSize = 0, outboundMessageBufferPriorityOverflow = 0, maxMessageSize = 20971520, useProxy = false, localPACFile = null]
    [07.01.15 09:42:21.411 INFO main com.backup42.desktop.CPDesktop ] Loaded permissions in 214ms
    [07.01.15 09:42:21.411 INFO main com.backup42.desktop.CPDesktop ] Adding shutdown hook.
    [07.01.15 09:42:21.412 INFO connect com.backup42.desktop.CPDesktop ] Connecting to service at 192.168.1.XXX:4243
    [07.01.15 09:42:22.489 INFO MQ-UI-0 com.backup42.desktop.CPDesktop ] Connected to service
    [07.01.15 09:42:22.489 INFO MQ-UI-0 com.backup42.service.ui.UIInfoUtility ] Loaded port=4243 and token from location=C:/ProgramData/CrashPlan/.ui_info
    [07.01.15 09:42:22.489 INFO MQ-UI-0 backup42.service.ui.client.ServiceClient] Getting initial application state for CPD, username=XX, userHome=C:\Users\XX, desktopFolder=C:\Users\XX\Desktop
    [07.01.15 09:42:22.490 INFO connect com.backup42.desktop.CPDesktop ] SUCCESS on attempt #1
    [07.01.15 09:42:22.528 INFO Factory$Notifier-UI0 com.backup42.desktop.Services ] DISCONNECTED!

  18. Bibliophile

    I would like to be able to block CrashPlan from updating its software – every time this automatically happens, it breaks functionality. I would like to be able to wait until the bugs are sorted out, before upgrading. Anybody know how to disable this automatic function and stay with the previous version?

  19. Brian Mackenzie

    Hi guys
    Same issue here since v4.3 was pushed out to me – initially the CrashPlan service on my Synology died with the usual ‘Repairing…’ message – I fixed that as per the instructions and the service came back up – and indeed my backups resumed (I backup to both CrashPlan Central and another Synology NAS running CrashPlan – could see the disk lights on both source and target flashing away and JAVA consuming CPU ticks on the source NAS).
    Anyway, I tried connecting to the service using the CrashPlan client (running on Windows 7 64-bit for what it’s worth) but no joy – just hangs there. Unfortunately after spending most of the day dicking around with this I think I’ve managed to screw the backup set that was backing up nicely (even though I couldn’t connect to check up on it). Now I’ve got no backups running and I’m still unable to connect.
    Would appreciate any pointers once someone has a handle on this issue.

  20. Ole Overgaard

    Help, please.
    After updating my Synology DS415+ to DSM 5.2-5592, crashplan stopped, and I could not start it again.
    I have uninstalled it, uninstalled Java, and reinstalled java, reinstalled Crashplan, stopped it and started it again.
    But the Crashplan keeps stopping when I start it.
    The logfile says:
    “Synology repairing upgrade in /var/packages/CrashPlan/target/upgrade/1427864400430.1435785676268″

    Anyone having a clue on what I can do?

  21. Richard

    I’m seeing the same behaviour. Restarting Crashplan on the Synology starts it up just fine with 4.3.0.

    Updated the client software and changed the ServiceHost, but can’t connect. When I tail engine_output.log I get the following

    [07.01.15 18:27:22.372 INFO main ] Connectivity testing localhost, port=4243, connectionTimeout(ms)=100, retryDuration(ms)=100
    [07.01.15 18:27:22.481 INFO main ] Failed to connect after duration=108, retryDuration=100, address=localhost, connectTimeout=100, e=Connection refused
    [07.01.15 18:27:22.504 ERROR main com.backup42.service.ui.UIInfoUtility ] Unable to find a file to read the token and port out of due to IO, check that the file is readable?, Unable to create parent folders for .ui_info file. folder=/var/lib/crashplan Unable to create parent folders for .ui_info file. folder=/var/lib/crashplan
    at com.backup42.service.ui.UIInfoUtility.setUIConnectionDetails(
    at com.backup42.service.CPService.initServicePorts(
    at com.backup42.service.CPService.start(
    at com.backup42.service.CPService.main(

    Anyone have any ideas?

  22. Richard

    Logged into Crashplan, it confirms that the engine on the Synology is running and connecting correctly.

  23. lupina001

    Ever since I updated to CrashPlan 4.2 (from 3.7) I cannot back up my files anymore. I have just updated to 4.3 and the same problem still happens.

    The worklog says:
    CrashPlan started, version 4.3.0, GUID 6503624866600795236
    Backup scheduled to always run
    [Default] Scanning for files to back up
    [Default] Starting backup to CrashPlan Central: 6 files (….kb) to back up
    Stopping CrashPlan
    [Default] Scanning for files stopped

    And the same exact events will keep repeating over and over in the log.
    Any ideas on what is causing the problem?

    1. lupina001

      I forgot to mention, the files are not being updated to CrashPlan Central. there are also probably over 1000 files updated since the the CrashPlan 4.2 upgrade but its not detecting it.

      1. lupina001

        I didn’t change the backup files. I actually removed many directories to be backed up after getting this issue but it still occurs.

        How do I troubleshoot if its a RAM allocation issue? I’m not very tech savy with linux….or accessing my NAS but I can follow directions.

      2. slidermike

        any idea when you might be able to put the new package together that works again?
        I think the last crashplan update they pushed out broke mine again on the 2nd or so.
        I tried the manual fix again but I must be doing something wrong as I still cannot get the service to run anymore on my ds1215+.

        Thank you for all your efforts & hope everyone had a good holiday weekend.

    2. ethuesen

      I’m having this problem as well.
      I also tried modifying the max RAM usage in syno_package.vars, however, it looks like it had no effect on the RAM usage.
      However, I found out there is no CrashPlan user created on my DS. Is there supposed to be an user called “crashplan” when CP is running, or is the user deleted after the package is installed?

      1. patters Post author

        No, the older versions used a dedicated user account but more recently the package runs as root to simplify things and since a backup application needs access to everything.

      2. ethuesen

        In that case I don’t know what the problem is.
        Here’s whats happening:
        1. CP is scanning for files after starting the package.
        2. The Java process exceeds about 900 MB of RAM and after that CP restarts (back to step 1, and this way CP keeps restarting every 3rd minute).
        As stated above, I have tried setting the maximum RAM usage in syno_package.vars to 500 MB, however, it did not have any effect – the RAM usage kept going up to 900 MB and CP kept restarting.

        I’m on a DS 412+ upgraded to 2GB of RAM.

  24. slidermike

    you mentioned having to adjust the config file to enable/default to ipv4.
    Now you said after re-installing the client you got it to work.
    So what do we have to do to get our headless client to connect to the NAS crashplan?
    I am running ds1512+ & CP 4.2.0-0031 but in the log it says ver 4.3.0

    1. patters Post author

      I’m rewriting the main blog post since it’s very outdated now. I hope to have that completed and a new package version published later tonight.

  25. Jon

    I’m getting an issue with an upgrade:
    /var/packages/CrashPlan/scripts/start-stop-status: line 10: ../../bin/CrashPlanEngine: not found

    Anyone else seeing this?

  26. cbamber72

    they just pushed another update 1427864410430, crashplan stopped once more. Manual fix worked again, if you have fixed the ui issue then it stays fixed, or they fixed it for us.

    1. slidermike

      Yeah the new update broke mine again. Patters said he was releasing a fixed version this evening so I am going to get that from him tonight.

      1. davidjpatrick

        Hi – I’m having the UI issue where it does not connect even though CrashPlan on the NAS says it’s running. Is there a fix for this?

      2. patters Post author

        Postponed due to Code42 breaking 4.3.0 with an update for which there is no full installer available (yet).

  27. Richard

    Tried to run echo `cat /var/lib/crashplan/.ui_info` but I don’t have a crashplan direction under that path.

  28. Eric

    Hi Patters,

    Completely agree with you on the GUID from the DSM move to the Client instead of the other way around, but I wanted to let you know why I didn’t write it up that way. I’m on a Mac and couldn’t for the life of me find the GUID file. It’s not a .ui_info file. :D I have looked everywhere. It must be somewhere, but I can’t find it. If someone finds it please post and let me know. Thankfully the other way worked as well.

    1. mikemag

      Here you go:

      [07.02.15 21:13:40.294 INFO MQ-UI-1 com.backup42.service.ui.UIInfoUtility ] Loaded port=4243 and token from location=/Library/Application Support/CrashPlan/.ui_info

      1. Eric

        Um… that’s embarrassing. How in the name of hell did I miss that file. I know I looked there because it’s an obvious location. Regardless, thank you and I find it a little sad I missed that. :)

  29. Adam

    Eric, i’ve found the location of the .ui_info file on a mac. Its in /Library/Application Support/CrashPlan

    Patters, do you want to update your guide on this.


  30. BenT

    Unfortunately I cannot find a file .ui_info. There is only /var/lib/crashplan/.identity but I do not have permission to open or modify this file. Same on windows, I only have C:\ProgramData\CrashPlan\.identity. This file actually can be opened and modified and contains all the desired information, such as the GUID.

    I reinstalled Crashplan on my Synology but nothing changed. The service is stopped and cannot be started which leads to not being able to start the client on Windows either.

    Any suggestions?

    1. patters Post author

      It’s only there after upgrading to CrashPlan 4.3 which some people are doing manually. I will release a package as soon as Code42 stop pushing this lastest minor update to 4.3 (started yesterday) and offer a full installer.

      1. Richard

        The system upgraded itself with both of the 4.3 releases, still missing anything under /var/lib. All of mine seem to exist under /volume1/@appstore/Crashplan

  31. Stanthewizzard

    I have 2 client that connect to the syno
    One is ok because I change .ui_info
    but and it is ok the other one doesn’t work

    How do I change the GUID of the client to match the other client ?


  32. Ole Overgaard

    I did the manual upgrade and took the GUID from the NAS and installed on my PC. And lo and behold – the CP package on the synology starts, and the PC connects to the CP service on the Synology.

    However, since I uninstalled and reinstalled Crashplan on the Synology, I need to provide my credentials in the PC-client. And when I do that, I get the error “unable to connect, check your network”. I have googled that error and the suggestions are to use OpenDNS and/or restart the CP service on the Synology. I have done both and it does not work. Instead, when I stop and starts the CP on the Synology the “Synology reparing upgrade” error returns and I have to make a manual upgrade again. How do I get past the “unable to connect, check your network” error?

    Any suggestions?

  33. TechNut

    Thanks to all who have worked out the issues with the 4.3.0 upgrade.

    I used the SSH manual update method and have CrashPlan running again on my Synology.
    I was also able to get my unique GUID from Synology …
    However, I am running the CrashPlan 4.2.0 Client on win XP ( i know, i know)
    and I CAN NOT find the “.ui_info” file anywhere on the PC.

    (I know the XP equivalent of the “ProgramData/crashplan” is the “Application Data/crashplan” folder, but the file is not there) I did a search for any file “ui_info” and nothing.

    Anyone have any suggestions???

      1. TechNut

        Ok, I see.
        I am on “CrashPlanPro” and on the Code42 site the latest client for the PRO is still 4.2.0
        (Home version is 4.3.)
        Any idea if there is somewhere I can download the 4.3. win exe for CrashPlanPRO?
        Or am SOL, and just have to wait for the update to roll out in the coming .. days/weeks?


    1. TechNut

      I was able to find the Windos CrashPlanPRO 4.3 client. But after installing it, still no go.
      Looking at the ui_output.log I see this error:
      Unable to find a file to read the token and port out of, Maybe not yet initialized?, C:\Documents and Settings\All Users\Application Data\CrashPlan\.ui_info (The system cannot find the file specified) C:\Documents and Settings\All Users\Application Data\CrashPlan\.ui_info (The system cannot find the file specified)

      1. Anil

        My situation is that the backup stopped working after I noticed that Crashplan auto updated on my Synology DS209 which is at DSM4.x and the client on my laptop was 3.7.0. So, first I updated to 4.3.0 on my laptop and still the backup engine 9n synology didn’t work. Long story short, after uninstalling Crashplan on synology, Crashplan package is not even shown listed on synology PC loader community package area.

        Can someone please help as to how to get Crashplan package so I can reinstall it on synology?

        Thanks in advance!

  34. Henrik

    I’m using Crashplan home, and upgraded the client i use at my pc to connect to the headless node on my NAS. But, I can’t find the “.ui_info” on my PC. How can I find the missing file?

  35. Eduard Epure

    I had to re-install Crashplan on my Synology NAS and its current version is 4.2.0. How do I get it to manually update ? Starting and stopping the service doesn’t trigger and update.

  36. Marc Wilson

    I was going to ask the same thing. Is it that the package has to be reinstalled, or that the client running on the Synology will auto-download it? I get the impression from other posts that it’s an auto-download.

  37. Flavio Endo

    I have solved my issue on the NAS using again the Chris’ solution:

    Note.. it is updated now for the 4.3.0, althought it is the same solution.

    The only thing is that my PC is still on 4.2.0, and the when I tried to update manually my PC to 4.3.0, Crashplan service stopped working. I had to reverse back to 4.2.0 to have it working again.
    So with NAS on 4.3.0 and my PC on 4.2.0, I cannot access the GUI from NAS. Anyway, it is working the backup.

    Thanks patters for all efforts always.

  38. Richard

    I wonder if anybody got the taskbar icon working with the latest version?
    Probably I need to change the GUID in another file wich the taskbar icon uses.

    previously it was hidden in the file in /Applications/\ menu\

    But with 4.3 the file does not exist anymore…

    Maybe anybody found a solution??


    1. Flavio Endo

      Is the service working?
      When I updated to 4.3.0 manually in my desktop, everything stopped.. not only the taskbar icon.
      I had to return it to 4.2.0.
      Crashplan did not updated automatically, so I will let the way it is (4.2.0).

  39. Per


    If you are like me running the stone age DSM 4.3 with package 3.6.3-0027 you might end up with issues for the /var/lib/ directory. The upgrade to 4.3.0 was constantly removing the directory /var/lib/crashplan until I adjusted the /var/lib/ and the crashplan user permissions. Apparently, Crashplan tries to create some other files in /var/lib/crashplan (apart from the .ui_info) and if it fails. the directory gets removed.


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