[SAC] Re: svnsync

Howard Butler hobu.inc at gmail.com
Sat Dec 22 17:04:37 EST 2007

I can now report that we have an svn mirror:


It uses svnsync to mirror all OSGeo project repositories hourly,  
including ones like OpenLayers and MapBuilder.  QGIS and GeoTools  
cannot be mirrored with svnsync because the server versions of those  
repositories are too old (1.3 and 1.1, respectively).  To be able to  
pull for svnsync, the server version must be 1.4.

The mirror is running on a TelaScience machine.  AFAIK, only Mateusz,  
John, and myself have the ability to login to this machine at this  
time (it isn't on the LDAP or anything).

I still need to do a little work to email in the event that the  
syncing cron fails and sends output to stderr.  If anyone has some  
code/ideas to make that simple, let me know.

I propose we let it stand for a week or so, and if things look like  
they are behaving to our satisfaction, we discontinue the 'svnadmin  
dump' full backups that we are running nightly that cause us lots of i/ 
o and cpu grief.


On Dec 11, 2007, at 9:02 PM, Howard Butler wrote:

> A number of months ago, Frank filed a ticket for using svnsync:
> http://trac.osgeo.org/osgeo/ticket/91
> I spent a little time this afternoon investigating what is required  
> to get this going, and it turns out there is absolutely nothing we  
> need to do on osgeo1 to support this.  I propose that we stand up  
> mirrors of all osgeo repositories on a TelaScience blade, and have  
> them do their sync every three hours.  Additionally, I propose that  
> we stop doing daily full dumps on osgeo1 and incremental svn dumps  
> on osgeo1.
> These can be done on a mirror if we still want them, but they  
> generate a lot of load on osgeo1, and we are looking to offload some  
> of our static backup costs.
> I will coordinate this effort and report back when it is done.  No  
> action should be required on osgeo1, and there will be no outage  
> (planned ones, anyway ;) )
> Howard

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