Incremental Backups of SVN Repository daily ? (OS = UNIX)

Question

the first part of question how i can make Incremental Backups of SVN Repository ? what is the command do this ....... and how i can do this automatically (OS + UNIX)

Answer 1

If you want to do it yourself, look into the "svnlook youngest" and "svnadmin dump --incremental -r${STARTREV}:${ENDREV}" commands.

I have pasted below the scripts that I use to make full and incremental dumps of my SVN repositories, they store the revision and date of the last backup in subdirectories of /home/svn/var. Make a full dump first, then as many incremental dumps as you want.

Full SVN dump script:

#!/bin/sh

# Full dump of all subversion repositories

# make sure to get the subversion environment variables
. /etc/profile.d/subversion.sh

# path to subversion binaries
SVN_BINPATH=${SVN_HOME}/bin

# path to parent of all repositories to be dumped
SVN_REPPATH=/opt/svn/repositories

# destination directory for backup files
DUMP_DIR=/backup/svn

# status directory
SVN_VAR=/home/svn/var

DATETIME=`date +%Y%m%d`

for rep in ${SVN_REPPATH}/*;
do
  TSTAMP=`date +%s`
  CURR_REV=`${SVN_BINPATH}/svnlook youngest ${rep}`
  REP_BASE=`basename $rep`

  echo "**********************************************************"
  echo "`date --rfc-2822`  - Full back up - ${rep} : "
  echo "     current revision ${CURR_REV}"
  echo

  DUMPFILE=${DUMP_DIR}/${REP_BASE}-${DATETIME}.dmp
  ${SVN_BINPATH}/svnadmin --quiet dump $rep > ${DUMPFILE}
  echo ${TSTAMP} > ${SVN_VAR}/status/dates/${REP_BASE}.dt
  echo ${CURR_REV} > ${SVN_VAR}/status/revisions/${REP_BASE}.rev
  bzip2 --compress --best ${DUMPFILE}
done

echo
echo `ls -hl ${DUMP_DIR}/*.bz2`

Incremental SVN dump script:

#!/bin/sh

# Incremental dump of all subversion repositories

# make sure to get the subversion environment variables
. /etc/profile.d/subversion.sh

# path to subversion binaries
SVN_BINPATH=${SVN_HOME}/bin

# path to parent of all repositories to be dumped
SVN_REPPATH=/opt/svn/repositories

# destination directory for backup files
DUMP_DIR=/backup/svn

# status directory
SVN_VAR=/home/svn/var

DATETIME=`date +%Y%m%d`

for rep in ${SVN_REPPATH}/*;
do
  TSTAMP=`date +%s`
  CURR_REV=`${SVN_BINPATH}/svnlook youngest ${rep}`
  REP_BASE=`basename $rep`

  if [ -e ${SVN_VAR}/status/dates/${REP_BASE}.dt ] ; then
    REP_LAST_BK_TSTAMP=`cat ${SVN_VAR}/status/dates/${REP_BASE}.dt`
    REP_LAST_BK_REV=`cat ${SVN_VAR}/status/revisions/${REP_BASE}.rev`
  else
    REP_LAST_BK_TSTAMP=0
    REP_LAST_BK_REV=0
  fi

  if [ ${CURR_REV} -gt ${REP_LAST_BK_REV} ] ; then
    echo "**********************************************************"
    echo "`date --rfc-2822`  - Incremental back up ${rep} : "
    echo "     oldest revision ${REP_LAST_BK_REV} - newest revision ${CURR_REV}"
    echo

    DUMPFILE=${DUMP_DIR}/${REP_BASE}-${DATETIME}-${REP_LAST_BK_REV}-${CURR_REV}.dmp
    ${SVN_BINPATH}/svnadmin --quiet dump $rep --incremental -r${REP_LAST_BK_REV}:${CURR_REV}> ${DUMPFILE}
    echo ${TSTAMP} > ${SVN_VAR}/status/dates/${REP_BASE}.dt
    echo ${CURR_REV} > ${SVN_VAR}/status/revisions/${REP_BASE}.rev
    bzip2 --compress --best ${DUMPFILE}
  fi
done

echo
echo `ls -hl ${DUMP_DIR}/*.bz2`

Hope this helps.