Hello digimer, Thank you for your reply. One further thing is not clear for me: when the token is going around the cluster, is there a leader that checks (and knows) where the token is (or should be)? Further more, do you know which open cloud stacks (like OpenNebula, OpenStack, Eucalypus Cloudstack) use (or can use) corosync? best, Alejandro On 10/04/2013, at 16:30, Digimer <lists@xxxxxxxxxx> wrote: > Hi Alejandro, > > I cover how corosync does this as part of a discussion on fencing in Red Hat clusters. It covers, as best as I could describe, how failure detection works; > > https://alteeve.ca/w/2-Node_Red_Hat_KVM_Cluster_Tutorial#Concept.3B_Fencing > > Hopefully that helps shed some light for you. :) > > digimer > > On 04/10/2013 06:36 AM, Alejandro Z. Tomsic wrote: >> I would like to know how the process of failure detection is achieved in >> Corosync (if any). I would like to know about the implementation >> details, i.e. if its done at physical, virtual machine or at application >> level. Does Corosync use any known failure detection mechanisms? e.g. >> [1][2][3][4] or any other. Where can I find this information? >> >> Thank you in advance. >> >> Alejandro >> >> >> >> >> [1] M.Bertier,O.Marin,andP.Sens.Implementation and performance >> evaluation of an adaptable failure detector. In International Conference >> on Dependable Systems and Networks (DSN), pages 354–363, June 2002. >> >> [2] W. Chen, S. Toueg, and M. K. Aguilera. On the quality of service of >> failure detectors. IEEE Transactions on Computers, 51(5):561–580, May 2002. >> >> [3] N. Hayashibara, X. De ́fago, R. Yared, and T. Katayama. The φ accrual >> failure detector. In IEEE Symposium on Reliable Distributed Systems >> (SRDS), pages 66–78, Oct. 2004. >> >> [4] Joshua B. Leners, Hao Wu, Wei-Lun Hung, Marcos K. Aguilera, and >> Michael Walfish. 2011. Detecting failures in distributed systems with >> the Falcon spy network. In Proceedings of the Twenty-Third ACM Symposium >> on Operating Systems Principles (SOSP '11). ACM, New York, NY, USA, >> 279-294. >> >> >> _______________________________________________ >> discuss mailing list >> discuss@xxxxxxxxxxxx >> http://lists.corosync.org/mailman/listinfo/discuss >> > > > -- > Digimer > Papers and Projects: https://alteeve.ca/w/ > What if the cure for cancer is trapped in the mind of a person without access to education? _______________________________________________ discuss mailing list discuss@xxxxxxxxxxxx http://lists.corosync.org/mailman/listinfo/discuss
