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Re: best way to backup repositories

From: Blair Zajac <blair_at_orcaware.com>
Date: Wed, 04 Jun 2008 12:28:07 -0700

Rush Manbert wrote:
> On Jun 4, 2008, at 6:37 AM, Ulrich Eckhardt wrote:
>> On Wednesday 04 June 2008, Marko Kaening wrote:
>>> I wonder what the best way for a regular backup of svn repos is...
>>> There is "svnhotcopy.py", but there is also the possibility of "svnadmin
>>> dump". The first would only work safely if there is no update of the svn
>>> version, but the latter might be a terrible slowdown of the backup
>>> process
>>> in contrast to simply copying the hotcopied svn repo dir.
>>> Any hints for me?
>> Use both. The hotcopy script is not much more than a simple filesystem
>> copy,
>> only that it copies things in an order that assures that you don't get an
>> inconsistent repository if you are in the middle of a transaction.
>> Then, from that repository, you create a dumpfile for which you make
>> incremental backups using some backup software.
> <snip>
> Why do this step? If I have the hot copy backup, doesn't that protect me
> if my main repository is lost? Making a dumpfile and backing it up
> incrementally seems to lose information that the hot copy preserved (the
> configuration info), and I could always make a dumpfile from the hot
> copy at the time I need to restore from it. But I would think I would
> just replace the original repository with the hot copy if I ever needed
> to do a restore after a disaster. Am I missing some subtlety about the
> backup/restore mechanism?

With large repositories the dump takes too long. So you end up dumping with
--incremental each revision that is committed and doing a nightly full dump. If
you need to recover, if use the last full dump and then svnadmin load in the
remaining incrementals.


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Received on 2008-06-04 21:28:40 CEST

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