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Re: backing up fsfs repo

From: Ulrich Eckhardt <eckhardt_at_satorlaser.com>
Date: 2006-07-05 13:45:05 CEST

On Wednesday 05 July 2006 12:16, spock@dwinner.net wrote:
> Can anybody tell me what the implications of just doing a normal backup
> (unix dump or tar of flat file structure) of an fsfs repo might be? Is it
> safe, or should I still be using "svnadmin dump"?

IMHO, yes, because it is The Documented Way(tm) to make backups.

> I did some testing, and it seemed to me that I could take a repo, rename it,
> move it, copy it, make a tarball out of it, delete it, then restore it from
> tarball, and it seemed safe and still functional in every case. But I don't
> want any nasty surprises, so if anybody knows of a reason this is not a good
> idea, please let me know.

The FSFS backend depends on portable ways to access files, so sophisticated
stuff is probably not needed (and thus can't fail).

> I know you can't get away with this with a berkley repo,

Yes you can, but Subversion used different versions of BDB in the backend and
those versions are not necessarily compatible. Usually they are convertible
but not necessarily so. That might be the problem that you were referring to.
Assuming the FSFS backend suddenly finds that it also needs something
different, it might require an update of the existing repository, too, so it
could develop the same problems. That is another reason for me to rely on
dumpfiles (which in fact also come in different versions, but those have a
guaranteed upgrade path built into Subversion).

just my 2cc


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Received on Wed Jul 5 13:46:42 2006

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