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RE: Have an old SVN 1.1 DB corruption issue and need some help

From: Bert Huijben <bert_at_qqmail.nl>
Date: Sat, 17 Aug 2013 01:25:58 +0200

If all commits were through that mod_dav_svn, you should get an svnadmin
that is linked to the same BDB as that mod_dav_svn.


It is not unlikely that there is somewhere a second install of Subversion on
you machine. (Maybe in some home directory?). Trying to locate that one
might be easier than building one yourself.


Having the same BDB version is more important than having the exact
Subversion version. (Although I would recommend backing up whatever you have
now, to make sure you don't break it by trying to recover).


I know many Windows tools use BDB 4.4.20, so that might be an easy way to
get access to such tools. But I don't know if the BDB database format is
fully compatible between platforms. (fsfs is fully compatible, but that
doesn't help you now)




From: Dana Epp [mailto:dana_at_vulscan.com]
Sent: zaterdag 17 augustus 2013 01:14
To: Chris Shelton
Cc: users
Subject: Re: Have an old SVN 1.1 DB corruption issue and need some help


Ya, I will definitely load the repo into fsfs on the new system.


I tried the recovery to no avail yesterday.


I just completed a restore of the VM to a state before all this started and
here is what I now see.


Trying to run an svnadmin dump gives me:


svn: bdb: Program version 4.2 doesn't match environment version

When I look at the versions using ldd, here is what I see:


mod_dav_svn (which is what everyone is using to check in) is linked to


svnadmin is linked to libdb4.2


svn is linked to libdb4.2


So is my solution to fix this to upgrade svnadmin to a version linked to









On Fri, Aug 16, 2013 at 12:40 PM, Chris Shelton <cshelton_at_shelton-family.net
<mailto:cshelton_at_shelton-family.net> > wrote:



This page of the subversion book sounds like it might be helpful in your



I am sure that switching to a FSFS repository data store with your new
system is advisable.




On Fri, Aug 16, 2013 at 1:37 PM, Dana Epp <dana_at_vulscan.com
<mailto:dana_at_vulscan.com> > wrote:

I have inherited a REALLY old SVN server that was mismanaged for years. They
were using WebDAV successfully for so long they never noticed any issues
under the hood, but the BDB is corrupt and cannot run an svnadmin dump on it
to move it to a new server that I built that has all the latest SVN bits.


The old system is running SVN 1.1.1 with BDB 4.2.52.


At this point after following several different pieces of guidance online
the system starts a dump, and ends up after several "Dumped revision #"
pukes out hundreds of the following lines:


svn: bdb: DB_ENV->log_flush: LSN of 56874/862249 past current end-of-log of
svn: bdb: Database environment corrupt; the wrong log files may have been
removed or incompatible database files imported from another environment


Does anyone know where I should go from here? Does anyone know of anyone
consulting on these sort of repairs? I did a full export of the whole repro
using WebDAV before I started this, so I have HEAD, but I don't want to lose
the history if I don't have to.

Dana Epp
Microsoft Security MVP 
Received on 2013-08-17 01:26:55 CEST

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