DevConf.cz 2018 has ended

DevConf.cz 2018 is the 10th annual, free, Red Hat sponsored community conference for developers, admins, DevOps engineers, testers, documentation writers and other contributors to open source technologies such as Linux, Middleware, Virtualization, Storage, Cloud and mobile where FLOSS communities sync, share, and hack on upstream projects together in the beautiful city of Brno, Czech Republic.

When: Friday, January 26 to Sunday, January 28, 2018

Venue: Faculty of Information Technology (VUT FIT - Božetěchova 2, Brno)


  • Friday 17:15: at the venue there will be a surprise show, stick around!
  • Saturday 19:00: the social event starts at Fleda Club. TICKET IS REQUIRED. Tickets will be distributed each day at check-in. First come, first serve.
  • Sunday 17:00: there will be many prizes given away at the closing session.
Back To Schedule
Saturday, January 27 • 3:00pm - 3:23pm
High availability with no split-brains! POPULAR

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Highly available virtual machines are restarted automatically when going down unintentionally. Such VMs are often needed for running critical services. However, restarting VMs automatically is a non-trivial task for management systems because it may cause a VM to run on two different machines simultaneously. This scenario, called "split-brain", may lead to data corruption since both instances use the same disk(s). That is especially unfortunate because highly available VMs are typically the most important ones. In this session I will describe the problem we faced and demonstrate our recent solution for this in oVirt (although both are not oVirt-specific).

avatar for Arik Hadas

Arik Hadas

Principal software engineer, Red Hat
Arik is a principal software engineer with more than a decade of experience in contributing to open source projects. He is a co-maintainer in the oVirt project and loves sharing his technical experience. Check out his blog at http://ahadas.github.io... Read More →

Saturday January 27, 2018 3:00pm - 3:23pm CET
G-E105 Faculty of Information Technology (VUT FIT)