Live replication to backup server

[Oliver Marshall <Ol...@g2support.com>]

Hi,

Does anyone know of any manageable way to have SVN (Ubuntu 8 LTS currently) replication all changes to a secondary server?

Im toying with using Rsync but I'd prefer to use a hook in SVN ideally to ensure that we only copy files when they are fully checked in.

Olly

Re: Live replication to backup server

[Nico Kadel-Garcia <nk...@gmail.com>]

On Fri, Jan 21, 2011 at 3:57 AM, Oliver Marshall
<Ol...@g2support.com> wrote:
> Hi,
>
>
>
> Does anyone know of any manageable way to have SVN (Ubuntu 8 LTS currently)
> replication all changes to a secondary server?

Use post-commit to fire off a command to "svnsync" on the secondart
server.  This doesn't mirror configurations, but you don't want to do
that anyway: the second server should be locked down to prevent local
changes, out of sync with the primary server.

Rsync is dangerous because if you do it in post-commit, it's
non-blocking and other changes may be submitted while the change is
occurring and cause chaos in the remote repository. The same problem
exists with mirroring *any* database: the mirroring step needs to be
atomic.

Alternatively, consider switching to a distributed source control
system where merges to disparate repositories are more effective.

Re: Betr.: Live replication to backup server

[Stefan Sperling <st...@elego.de>]

On Fri, Jan 21, 2011 at 10:05:02AM +0100, Jan Keirse wrote:
> Oliver Marshall <Ol...@g2support.com> schreef op 21/01/2011 
> 09:57:34:
> 
> > Hi,
> > 
> > Does anyone know of any manageable way to have SVN (Ubuntu 8 LTS 
> > currently) replication all changes to a secondary server?
> > 
> > Im toying with using Rsync but I?d prefer to use a hook in SVN 
> > ideally to ensure that we only copy files when they are fully checked 
> in.
>  
> 
> Subversion comes with a tool for that: 
> http://svnbook.red-bean.com/en/1.5/svn.reposadmin.maint.html#svn.reposadmin.maint.tk.svnsync 

Make sure to read about this issue before using svnsync:
http://subversion.tigris.org/issues/show_bug.cgi?id=3546

The svnsync setup as described in the book will work properly in
Subversion 1.7 (not released yet). Until then, a race condition has
to be worked around. See http://svn.haxx.se/users/archive-2011-01/0291.shtml
for the workaround.

Stefan

Betr.: Live replication to backup server

[Jan Keirse <ja...@tvh.be>]

Oliver Marshall <Ol...@g2support.com> schreef op 21/01/2011 
09:57:34:

> Hi,
> 
> Does anyone know of any manageable way to have SVN (Ubuntu 8 LTS 
> currently) replication all changes to a secondary server?
> 
> Im toying with using Rsync but I?d prefer to use a hook in SVN 
> ideally to ensure that we only copy files when they are fully checked 
in.
 

Subversion comes with a tool for that: 
http://svnbook.red-bean.com/en/1.5/svn.reposadmin.maint.html#svn.reposadmin.maint.tk.svnsync 


Kind Regards,

JAN KEIRSE
ICT-DEPARTMENT
Software quality & Systems: Software Engineer

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