====================================================== Tahoe-LAFS Weekly News, issue number 9, July 31, 2011 ======================================================= Welcome to the Tahoe-LAFS Weekly News (TWN). Tahoe-LAFS_ is a secure, distributed storage system. `View TWN on the web`_ *or* `subscribe to TWN`_. .. _Tahoe-LAFS: http://tahoe-lafs.org .. _View TWN on the web: http://tahoe-lafs.org/trac/tahoe-lafs/wiki/TahoeLAFSWeeklyNews .. _subscribe to TWN: http://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-lafs-weekly-news Announcements and News ====================== The march towards Tahoe-LAFS v1.9 continues. Brian posted an update of `which tickets may make it into 1.9`_. The ticket list is * #393_ : Medium Sized Distributed Mutable Files! * #1429_ : David-Sarah's Dropbox-ish inotify-triggered auto-upload feature * #1425_ : support blacklisting of files at a gateway * #1010_ : use only 127.0.0.1 as a local address for anonymity * #1342_ : rename tests of packaging * #1385_ : stop respecting the pre-v1.3.0 config files We unfortunately had to `shut down the pubgrid`_. Various groups took advantage of the open nature of the grid to store database dumps, cracking tools and other items. The purpose of the pubgrid was always to let people experiment with Tahoe-LAFS "live on the web" without having to first download the software themselves. We're talking on the mailing list about how to restablish a way for people to do that which wouldn't be used to host problematic items. Next week is the tenth issue of TWN. Any suggestions on what we should cover for our tenth issue? .. _which tickets may make it into 1.9: http://tahoe-lafs.org/pipermail/tahoe-dev/2011-July/006577.html .. _393: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/393 .. _1425: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1425 .. _1429: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1429 .. _1010: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1010 .. _1342: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1342 .. _1385: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1385 .. _`shut down the pubgrid`: http://tahoe-lafs.org/pipermail/tahoe-dev/2011-July/006572.html Free and Open Source Project of the Week ======================================== The Free and Open Source Project of the Week is bup_. The author of bup, Avery Pennarun, details some exciting bits regarding bup. "bup has a few advantages over other backup software: It uses a rolling checksum algorithm (similar to rsync) to split large files into chunks. The most useful result of this is you can backup huge virtual machine (VM) disk images, databases, and XML files incrementally, even though they're typically all in one huge file, and not use tons of disk space for multiple versions. It uses the packfile format from git (the open source version control system), so you can access the stored data even if you don't like bup's user interface. Unlike git, it writes packfiles directly (instead of having a separate garbage collection / repacking stage) so it's fast even with gratuitously huge amounts of data. bup's improved index formats also allow you to track far more filenames than git (millions) and keep track of far more objects (hundreds or thousands of gigabytes). Data is "automagically" shared between incremental backups without having to know which backup is based on which other one - even if the backups are made from two different computers that don't even know about each other. You just tell bup to back stuff up, and it saves only the minimum amount of data needed. You can back up directly to a remote bup server, without needing tons of temporary disk space on the computer being backed up. And if your backup is interrupted halfway through, the next run will pick up where you left off. And it's easy to set up a bup server: just install bup on any machine where you have ssh access. Bup can use "par2" redundancy to recover corrupted backups even if your disk has undetected bad sectors. Even when a backup is incremental, you don't have to worry about restoring the full backup, then each of the incrementals in turn; an incremental backup acts as if it's a full backup, it just takes less disk space. You can mount your bup repository as a FUSE filesystem and access the content that way, and even export it over Samba. It's written in python (with some C parts to make it faster) so it's easy for you to extend and maintain." -- Avery Pennarun [1_] .. _bup: https://github.com/apenwarr/bup .. _1: https://github.com/apenwarr/bup#readme

From the tahoe-dev Mailing List ===============================

Both Brian Warner and David-Sarah Hopwood explained where `URLs are generated`_ in Tahoe. There is a lengthy discussion regarding the shutdown of the pubgrid and any possible liability_ surrounding grids hosting illegal content. On a personal note, I would love for a member of the EFF_ to comment on this. Olaf TNSB posted `an issue with OS X`_. It turns out this issue is a result of an incompatibility_ between zope.interface 3.6.4 and Nevow 0.10. Kevin Reid started a interesting discussion regarding the use of `Caja to solve the same-orgin policy hazard`_. .. _`URLs are generated`: http://tahoe-lafs.org/pipermail/tahoe-dv/2011-July/006578.html .. _liability: http://tahoe-lafs.org/pipermail/tahoe-dev/2011-July/006581.html .. _EFF: http://www.eff.org .. _`an issue with OS X`: http://tahoe-lafs.org/pipermail/tahoe-dev/2011-July/006608.html .. _incompatibility: http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1435# .. _`Caja to solve the same-orgin policy hazard`: http://tahoe-lafs.org/pipermail/tahoe-dev/2011-July/006613.html Patch Needing Review of the Week ================================ Rather than single out any new patch, this week is dedicated to all the new patches going into 1.9. So headed on here_ and pick a patch to review. Currently there are 13 patches needing review for 1.9. Let's see if we can't halve that number by next week. .. _here: http://tahoe-lafs.org/trac/tahoe-lafs/query?status=!closed&keywords=~review-needed&group=milestone&col=id&col=summary&col=keywords&col=status&col=owner&col=type&col=priority&col=time&col=changetime&desc=1&order=changetime ---- *The Tahoe-LAFS Weekly News is published once a week by The Tahoe-LAFS Software Foundation, President and Treasurer: Peter Secor. Scribes: Patrick "marlowe" McDonald, Zooko Wilcox-O'Hearn, Editor: Zooko.* `View TWN on the web`_ *or* `subscribe to TWN`_ *. Send your news stories to* marlowe@antagonism.org_ *b submission deadline: Friday night.* .. _marlowe@antagonism.org: mailto:marlowe@antagonism.org -- ---------------------------------------------------------------- | Patrick R. McDonald GPG Key: 668AA5DF | | https://www.antagonism.org/ <marlowe@antagonism.org> | | <mcdonald.patrick.r@gmail.com> | | <patrick@opensecurityfoundation.org> | ---------------------------------------------------------------- | Malo periculosam libertatem quam quietum servitium | ---------------------------------------------------------------- _______________________________________________ tahoe-lafs-weekly-news mailing list tahoe-lafs-weekly-news@tahoe-lafs.org http://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-lafs-weekly-news ----- End forwarded message ----- -- Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org ______________________________________________________________ ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE