Hi guys, I am a student from Italy and I should make my thesis on Glusterfs focusing on the geo-replication and so I would better understand mechanisms and if any model and theory adopted behind it. The case study of the thesis would be the long time preservation data got from the forthcoming digitalization of two big libraries (National Library of Florence and Rome), with a very large amount of data to be kept in a secure way (maybe about 800TB or WARC files of about 200MB) distribuited on 6 nodes in 3 providers, as better shown here [1] . While performance are not very important, files integrity and consistency anyway and anytime are essential priorities, thus I would know how it would be possible to ensure it using the geo-replication and if there could be any model or theory that can help, even in the worste case of Master unreachability or something else that could go wrong. I would ask you what could be the better approach to deal with this problem and if is there any theory ensuring it. As you can see from here [2], the Library has considered using Gluster but they found difficulties and many fails in local geo-replication (gluster 3.3), and my role would be to study this part to better understand how issues comes, combining the study with the pratical functionality of the system. I saw the Server Quorum feature for the next version, I was wondering if it is the one from the Duvvuri theory and if could be useful for that case killing unconsistent bricks. And, what about using Hadoop with the Gluster connector? I think that this work would require a massive study and testing (for me at least!), but it would be very nice do this research trying to get an international cultural needing working thanks to a big opensource project, "in perpetuum" :) [1] http://bit.ly/Zj6T1T [2] http://www.slideshare.net/ccorsani/bncf-digital-long-term-preservation-glusterfs -- Natale Vinto http://www.gotext.org FSF Member #8163 gpg keyserver: keys.gnupg.net recv-keys 55260343 Key fingerprint = 71F1 12C2 035D 7082 0C0A E677 8A85 5F78 5526 0343
