don't know if this issue came up already - in case it did and has been
dismissed, I beg your pardon. In case it didn't...
I hereby propose, that pbzip2 (https://launchpad.net/pbzip2) is used
to compress the xml dumps instead of bzip2. Why? Because its sibling
(pbunzip2) has a bug bunzip2 hasn't. :-)
Strange? Read on.
A few hours ago, I filed a bug report for pbzip2 (see
https://bugs.launchpad.net/pbzip2/+bug/922804) together with some test
results done even some few hours before that.
The results indicate that:
bzip2 and pbzip2 are vice-versa compatible each one can create
archives, the other one can read. But if it is for uncomressing, only
pbzip2 compressed archives are good for pbunzip2.
I propose compressing the archives with pbzip2 for the following
1) If your archiving machines are SMP systems this could lead to a
better usage of system ressources (i.e. faster compression).
2) Compression with pbzip2 is harmless for regular users of bunzip2,
so everything should run for these people as usual.
3) pbzip2-compressed archives can be uncompressed with pbunzip2 with a
speedup that scales nearly linearly with the number of CPUs in the
So to sum up: It's a no loose and two win situation if you migrate to
pbzip2. And that just because pbunzip2 is slightly buggy. Isn't that
Dipl.-Inf. Univ. Richard C. Jelinek
PetaMem GmbH - www.petamem.com Geschäftsführer: Richard Jelinek
Human Language Technology Experts Sitz der Gesellschaft: Fürth
69216618 Mind Units Registergericht: AG Fürth, HRB-9201
We've seen some kernel errors in the logs on the server that hosts the
dumps. In order to upgrade and reboot, we need the currrently running
dumps to exit as soon as they complete the current phase of their runs.
I expect to complete this before the end of the week; if necessary I
will shoot existing processes to get it done. In the meantime as dumps
complete, new ones will not be started; thanks for your patience.
Create a script that makes a request to Special:Export using this category
More info https://www.mediawiki.org/wiki/Manual:Parameters_to_Special:Export
2012/5/21 Mike Dupont <jamesmikedupont(a)googlemail.com>
> Well I whould be happy for items like this :
> would it be possible to extract them easily?
> On Thu, May 17, 2012 at 2:23 PM, Ariel T. Glenn <ariel(a)wikimedia.org>
> > There's a few other reasons articles get deleted: copyright issues,
> > personal identifying data, etc. This makes maintaning the sort of
> > mirror you propose problematic, although a similar mirror is here:
> > http://deletionpedia.dbatley.com/w/index.php?title=Main_Page
> > The dumps contain only data publically available at the time of the run,
> > without deleted data.
> > The articles aren't permanently deleted of course. The revisions texts
> > live on in the database, so a query on toolserver, for example, could be
> > used to get at them, but that would need to be for research purposes.
> > Ariel
> > Στις 17-05-2012, ημέρα Πεμ, και ώρα 13:30 +0200, ο/η Mike Dupont έγραψε:
> >> Hi,
> >> I am thinking about how to collect articles deleted based on the "not
> >> notable" criteria,
> >> is there any way we can extract them from the mysql binlogs? how are
> >> these mirrors working? I would be interested in setting up a mirror of
> >> deleted data, at least that which is not spam/vandalism based on tags.
> >> mike
> >> On Thu, May 17, 2012 at 1:09 PM, Ariel T. Glenn <ariel(a)wikimedia.org>
> >> > We now have three mirror sites, yay! The full list is linked to from
> >> > http://dumps.wikimedia.org/ and is also available at
> >> >
> >> >
> >> > Summarizing, we have:
> >> >
> >> > C3L (Brazil) with the last 5 good known dumps,
> >> > Masaryk University (Czech Republic) with the last 5 known good dumps,
> >> > Your.org (USA) with the complete archive of dumps, and
> >> >
> >> > for the latest version of uploaded media, Your.org with http/ftp/rsync
> >> > access.
> >> >
> >> > Thanks to Carlos, Kevin and Yenya respectively at the above sites for
> >> > volunteering space, time and effort to make this happen.
> >> >
> >> > As people noticed earlier, a series of media tarballs per-project
> >> > (excluding commons) is being generated. As soon as the first run of
> >> > these is complete we'll announce its location and start generating
> >> > on a semi-regular basis.
> >> >
> >> > As we've been getting the bugs out of the mirroring setup, it is
> >> > easier to add new locations. Know anyone interested? Please let us
> >> > know; we would love to have them.
> >> >
> >> > Ariel
> >> >
> >> >
> >> > _______________________________________________
> >> > Wikitech-l mailing list
> >> > Wikitech-l(a)lists.wikimedia.org
> >> > https://lists.wikimedia.org/mailman/listinfo/wikitech-l
> > _______________________________________________
> > Wikitech-l mailing list
> > Wikitech-l(a)lists.wikimedia.org
> > https://lists.wikimedia.org/mailman/listinfo/wikitech-l
> James Michael DuPont
> Member of Free Libre Open Source Software Kosova http://flossk.org
> Contributor FOSM, the CC-BY-SA map of the world http://fosm.org
> Mozilla Rep https://reps.mozilla.org/u/h4ck3rm1k3
> Wikitech-l mailing list
Emilio J. Rodríguez-Posada. E-mail: emijrp AT gmail DOT com
Pre-doctoral student at the University of Cádiz (Spain)
Projects: AVBOT <http://code.google.com/p/avbot/> |
| WikiEvidens <http://code.google.com/p/wikievidens/> |
| WikiTeam <http://code.google.com/p/wikiteam/>
Personal website: https://sites.google.com/site/emijrp/
Over the next few days you'll see the number of processes drop as jobs
on each host complete. I'll be restarting themon each host as they
finish; this is part of my work to get deployment to suck less.
We now have three mirror sites, yay! The full list is linked to from
http://dumps.wikimedia.org/ and is also available at
Summarizing, we have:
C3L (Brazil) with the last 5 good known dumps,
Masaryk University (Czech Republic) with the last 5 known good dumps,
Your.org (USA) with the complete archive of dumps, and
for the latest version of uploaded media, Your.org with http/ftp/rsync
Thanks to Carlos, Kevin and Yenya respectively at the above sites for
volunteering space, time and effort to make this happen.
As people noticed earlier, a series of media tarballs per-project
(excluding commons) is being generated. As soon as the first run of
these is complete we'll announce its location and start generating them
on a semi-regular basis.
As we've been getting the bugs out of the mirroring setup, it is getting
easier to add new locations. Know anyone interested? Please let us
know; we would love to have them.
It's amazing there are already so many years available for download.
Especially the larger zips must have been somewhat time-consuming to
compile! It would be great if 2008 or pre-2006 packages become available in
the near future. It is a really interesting development to see
http://dumps.wikimedia.org being interested in not only compiling large
current packaged databases of various wikis, but also more historic
content. In the past, the Internet Archive was the sole distributor of
older (also historic) wiki packages.
Eventually in the far future, there will have to be some sort of viable
mechanism for cloning all the images stored on wikimedia, though as for now
the Picture of the Year packages are very interesting for those more
interested in the pretty images of wikipedia. The POTY images also make
great wallpaper packs!