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RE: AW: Companies Using Subversion

From: Stuart Robertson <dogmatix_at_absolutesys.com>
Date: 2004-05-05 11:25:01 CEST


I introduced SVN to Absolute Systems Inc. (www.absolutesys.com) where I work
about a year ago, and for about 8 months we ran internal SVN pilots, played
around to gain experience and trust, etc.

In the last 4 months we have migrated all of our internal product source
repositories from Visual Source-Safe to SVN using an internally-written
VSS-to-SVN migration tool.

Our largest SVN repository is now 3.7GB and currently has 68806 revisions.
We are running SVN 1.0.1 + Apache 2.0.48 on Linux.

We now have a master-slave repository setup where all commits are made to
the master svn server, and the slave server regularly (currently every 5
minutes) synchronises its repositories with the master's repositories, so we
have a fairly fault-tolerant system.

Recently we had a substantial hardware failure on the master server, and it
was a simple matter of changing hostname and IP-address on the slave and all
of our developers were able to continue working.

We are somewhat paranoid about data-loss, so we make complete backups daily
and we store the last 2 weeks' complete backups offsite. Having said that,
however, to date we have had no problems that have required us to ever
rollback a day, or that have resulted in data loss.

SVN is a superb piece of work, and it is a *huge* step forward from VSS. To
put things in perspective... previously we had 26 VSS databases for one
product, primarily because of problems with VSS when the repositories grow
large. As you can imagine, trying to manage product releases across so many
repositories was really painful.

Now, with SVN, *all* of the artifacts for that same product are in a single
repository, meaning that with a few cheap copy operations all of the sources
that make up a given release can be grouped together.

I would suggest that you first pilot SVN internally, before jumping in the
deep end. We learned a lot during our piloting that allowed us to better
understand what we were getting ourselves into.

Hope this helps.


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Received on Wed May 5 11:25:41 2004

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