SVN repository backup strategies

Question

I m new to SVN and I d like to know what methods are available for backing up repositories in a Windows environment

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Basically it s safe to copy the repository folder if the svn server is stopped   source  https   groups google com forum  fromgroups  topic visualsvn i 55khUBrys 5B1-25 5D    So if you re allowed to stop the server  do it and just copy the repository  either with some script or a backup tool  Cobian Backup fits here nicely as it can stop and start services automatically  and it can do incremental backups so you re only backing up parts of repository that have changed recently  useful if the repository is large and you re backing up to remote location    Example    Install Cobian Backup Add a backup task    Set source to repository folder  e g  C  Repositories    Add pre-backup event  STOP SERVICE  VisualSVN  Add post-backup event   START SERVICE  VisualSVN  Set other options as needed  We ve set up incremental backups including removal of old ones  backup schedule    destination  compression incl  archive splitting etc   Profit

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There s a hotbackup py script available on the Subversion web site that s quite handy for automating backups   http   svn apache org repos asf subversion trunk tools backup hot-backup py in

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For the daily and full backup solution just use the SVN backup scripts here

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svnadmin hotcopy  svnadmin hotcopy REPOS PATH NEW REPOS PATH      This subcommand makes a full    hot    backup of your repository  including all hooks  configuration files  and  of course  database files

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For hosted repositories you can since svn version 1 7 use svnrdump  which is analogous to svnadmin dump for local repositories  This article provides a nice walk-through  which essentially boils down to   svnrdump dump  URL to remote repository  gt  myRepository dump   After you have downloaded the dump file you can import it locally   svnadmin load  path to local repository  lt  myRepository dump   or upload it to the host of your choice

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as others have said  hot-backup py from the Subversion team has some nice features over just plain svnadmin hotcopy  I run a scheduled task on a python script that spiders for all my repositories on the machine  and uses hotbackup to keep several days worth of hotcopies  paranoid of corruption  and an svnadmin svndump on a remote machine  Restoration is really easy from that - so far

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We use svnadmin hotcopy  e g    svnadmin hotcopy C  svn repo D  backups svn repo   As per the book      You can run this command at any time and make a safe copy of the repository  regardless of whether other processes are using the repository    You can of course ZIP  preferably 7-Zip  the backup copy  IMHO It s the most straightforward of the backup options  in case of disaster there s little to do other than unzip it back into position

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echo off set hour  time  0 2  if   hour  0 1        set hour 0 time  1 1  set folder  date  6 4  date  3 2  date  0 2  hour  time  3 2   echo Performing Backup md    HOME Development Backups SubVersion  folder    svnadmin dump  C  Users Yakyb Desktop MainRepositary Jake     C  Program Files 7-Zip 7z exe  a    HOME Development Backups SubVersion  folder  Jake 7z  -sibackupname svn   This is the Batch File i have running that performs my Backups

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Here is a Perl script that will    Backup the repo Copy it to another server via SCP Retrieve the backup Create a test repository from the backup Do a test checkout Email you with any errors  via cron    The script   my  svn repo     var svn     my  bkup dir     home backup user backups   my  bkup file    my backup-   my  tmp dir     home backup user tmp      my  bkup svr    my backup com   my  bkup svr login    backup     bkup file    bkup file    date   Y m d- H M   chomp  bkup file  my  youngest    svnlook youngest  svn repo   chomp  youngest   my  dump command    svnadmin  -q dump  svn repo  gt   bkup dir  bkup file    print   nDumping Subversion repo  svn repo to  bkup file    n   print   dump command   print  Backing up through revision  youngest     n   print   nCompressing dump file    n   print  gzip -9  bkup dir  bkup file n   chomp  bkup file  my  zipped file    bkup dir          bkup file     gz   print   nCreated  zipped file n   print  scp  zipped file  bkup svr login   bkup svr  home backup    print   n bkup file gz transfered to  bkup svr n     Test Backup print   n--------------------------------------- n   print  Testing Backup   print   n--------------------------------------- n   print  Downloading  bkup file gz from  bkup svr n   print  scp  bkup svr login   bkup svr  home backup  bkup file gz  tmp dir    print  Unzipping  bkup file gz n   print  gunzip  tmp dir  bkup file gz   print  Creating test repository n   print  svnadmin create  tmp dir test repo   print  Loading repository n   print  svnadmin -q load  tmp dir test repo  lt   tmp dir  bkup file   print  Checking out repository n   print  svn -q co file    tmp dir test repo  tmp dir test checkout   print  Cleaning up n   print  rm -f  tmp dir  bkup file   print  rm -rf  tmp dir test checkout   print  rm -rf  tmp dir test repo     Script source and more details about the rational for this type of backup

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You could use something like  Linux    svnadmin dump repositorypath   gzip  gt  backupname svn gz   Since Windows does not support GZip it is just   svnadmin dump repositorypath  gt  backupname svn

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You can create a repository backup  dump  with svnadmin dump  You can then import it in using svnadmin load    Detailed reference in the SVNBook   Repository data migration using svnadmin

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I like to just copy the entire repo directory to my backup location   That way  if something happens  you can just copy the directory back and be ready to go immediately   Just make sure to preserve permissions  if needed   Usually  this is only a concern on Linux machines

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there are 2 main methods to backup a svn server  first is hotcopy that will create a copy of your repository files  the main problem with this approach is that it saves data about the underlying file system  so you may have some difficulties trying to repostore this kind of backup in another svn server kind or another machine  there is another type of backup called dump  this backup wont save any information of the underlying file system and its potable to any kind of SVN server based in tigiris org subversion   about the backup tool you can use the svnadmin tool it is able to do hotcopy and dump  from the command prompt  this console resides in the same directory where your svn server lives or you can google for svn backup tools   my recommendation is that you do both kinds of backups and get them out of the office to your email acount  amazon s3 service  ftp  or azure services  that way you will have a securityy backup without having to host the svn server somewhere out of your office

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1 1 Create Dump from SVN  Subversion  repository  svnadmin dump  path to reponame  gt   path to reponame dump   Real example  svnadmin dump  var www svn testrepo  gt   backups testrepo dump   1 2 Gzip Created Dump  gzip -9  path to reponame dump   Real example  gzip -9  backups testrepo dump   1 3 SVN Dump and Gzip Dump with One-liner  svnadmin dump  path to reponame   gzip -9  gt   path to reponame dump gz   Real example  svnadmin dump  var www svn testrepo     gzip -9  gt   backups testrepo dump gz   How to Backup  dump  and Restore  load  SVN  Subversion  repository on Linux  Ref  svn subversion backup andrestore

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I use svnsync  which sets up a remote server as a mirror slave   We had a server go down two weeks ago  and I was able to switch the slave into primary position quite easily  only had to reset the UUID on the slave repository to the original    Another benefit is that the sync can be run by a middle-man  rather than as a task on either server   I ve had a client to two VPNs sync a repository between them

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If you are using the FSFS repository format  the default   then you can copy the repository itself to make a backup  With the older BerkleyDB system  the repository is not platform independent and you would generally want to use svnadmin dump   The svnbook documentation topic for backup recommends the svnadmin hotcopy command  as it will take care of issues like files in use and such

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I have compiled the steps I followed for the purpose of taking a backup of the remote SVN repository of my project   install svk  http   svk bestpractical com view SVKWin32   install svn  http   sourceforge net projects win32svn files 1 6 16 Setup-Subversion-1 6 16 msi download   svk mirror   local  lt remote repository URL gt   svk sync   local   This takes time and says that it is fetching the logs from repository  It creates a set of files inside C  Documents and Settings nverma  svk local   To update this local repository with the latest set of changes from the remote one  just run the previous command from time to time   Now you can play with your local repository   home user  svk local in this example  as if it were a normal SVN repository   The only problem with this approach is that the local repository is created with a revision increments by the actual revision in the remote repository  As someone wrote      The svk miror command generates a commit in the just created repository  So all the commits created by the subsequent sync will have revision numbers incremented by one as compared to the remote public repository    But  this was OK for me as I only wanted some backup of the remote repository time to time  nothing else   Verification   To verify  use the SVN client with the local repository like this   svn checkout  file    C  Documents and Settings nverma  svk local     lt local-dir-path-to-checkout-onto gt    This command then goes to checkout the latest revision from the local repository  At the end it says Checked out revision N  This N was one more than the actual revision found in the remote repository  due to the problem mentioned above    To verify that svk also brought all the history  the SVN checkout was run with various older revisions using -r with 2  10  50 etc  Then the files in  lt local-dir-path-to-checkout-onto gt  were confirmed to be from that revision   At the end  zip the directory C  Documents and Settings nverma  svk local  and store the zip somewhere  Keep doing this regularly

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Here a GUI Windows tool for make a dump of local and remote subversion repositories   https   falsinsoft-software blogspot com p svn-backup-tool html  The tool description says   This simply tool allow to make a dump backup of a local and remote subversion repository  The software work in the same way of the  svnadmin  but is not a GUI frontend over it  Instead  use directly the subversion libraries for allow to create dump in standalone mode without any other additional tool    Hope this help

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svnbackup over at Google Code  a  NET console application

[windows] SVN repository backup strategies

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