Matt Amos wrote: > On Thu, Nov 5, 2009 at 12:07 PM, Emilie Laffray > <[email protected]> wrote: > >> 2009/11/5 Frederik Ramm <[email protected]> >> >>> Timo Juhani Lindfors wrote: >>> >>>> I would like to do this too to provide a local mirror. Last time I >>>> tried to do this I understood that this can't be done since the 0.6 >>>> style diffs do not have enough information to create 100% identical >>>> copy. Is this still correct? I think the problem had something to do >>>> with changesets not being atomic. >>>> >>> There are now "replication" changesets (along with a special Osmosis >>> task, --rri, to read and assemble them) which are supposed to capture >>> any change to the data base. >>> >> Interesting. Do you have more documentation on this? I looked at the >> reference page for Osmosis and I couldn't find it. >> With those changesets, how do you proceed from a planet dump? Is there any >> documentation on how to use this. >> > > i don't think there is any documentation yet, and i'm sure brett would > be happy if someone could help out with that. :-) > This is true :-)
The minute replication tasks are working and I believe they're reliable. There's some additional tasks used to automate their downloads, and some tasks in the works to merge them into hour/day changesets. They still don't contain full changeset information. They do contain full history. I've been away on holiday for five weeks, starting a new project at work, and now I'm moving to a new house which won't have Internet connectivity for at least a month. Suffice to say I won't have much time to improve on the current state of affairs in the very near future. Some of the stuff to be done includes: * The new tasks need to be documented. * Existing tasks need to be examined to see if the full history diffs (ie. changesets with potentially multiple changes to a single entity in the same file) work correctly. * A new task may need to be created to condense full history diffs into simpler diffs to work with tasks where full history doesn't make sense (eg. I suspect merging tasks will have issues). * All changeset extraction needs to be migrated onto the new servers. * New jobs and osmosis tasks need to be created to merge minute replication files into larger files (ie. hour and day). * The existing "history" extraction process needs to be continued to provide full history since day 1. I'll probably get there eventually but any assistance would be appreciated. > it's been discussed a couple of times on this ML, though: > http://lists.openstreetmap.org/pipermail/dev/2009-October/017390.html > http://lists.openstreetmap.org/pipermail/dev/2009-October/017522.html > Brett _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
