Public bug reported: Under certain conditions there is faulty logic in function tengine_stonith_notify() which can incorrectly add successfully fenced nodes to a list, causing Pacemaker to subsequently erase that node’s status section when the next DC (Designated Controller) election occurs. With the status section erased, the cluster considers that node is down and starts corresponding services on other nodes. Multiple instances of the same service can cause data corruption.
Conditions: 1. fenced node must have been the previous DC and been sufficiently functional to request its own fencing 2. fencing notification must arrive after the new DC has been elected but before it invokes the policy engine Pacemaker versions affected: 1.1.6 - 1.1.9 Stable Ubuntu releases affected: Ubuntu 12.04 LTS Ubuntu 12.10 (EOL?) Fix: https://github.com/ClusterLabs/pacemaker/commit/f30e1e43 References: https://www.mail-archive.com/[email protected]/msg19509.html http://blog.clusterlabs.org/blog/2014/potential-for-data-corruption-in-pacemaker-1-dot-1-6-through-1-dot-1-9/ ** Affects: pacemaker (Ubuntu) Importance: Undecided Status: New ** Tags: precise quantal -- You received this bug notification because you are a member of Ubuntu High Availability Team, which is subscribed to pacemaker in Ubuntu. https://bugs.launchpad.net/bugs/1312156 Title: [Precise] Potential for data corruption Status in “pacemaker” package in Ubuntu: New Bug description: Under certain conditions there is faulty logic in function tengine_stonith_notify() which can incorrectly add successfully fenced nodes to a list, causing Pacemaker to subsequently erase that node’s status section when the next DC (Designated Controller) election occurs. With the status section erased, the cluster considers that node is down and starts corresponding services on other nodes. Multiple instances of the same service can cause data corruption. Conditions: 1. fenced node must have been the previous DC and been sufficiently functional to request its own fencing 2. fencing notification must arrive after the new DC has been elected but before it invokes the policy engine Pacemaker versions affected: 1.1.6 - 1.1.9 Stable Ubuntu releases affected: Ubuntu 12.04 LTS Ubuntu 12.10 (EOL?) Fix: https://github.com/ClusterLabs/pacemaker/commit/f30e1e43 References: https://www.mail-archive.com/[email protected]/msg19509.html http://blog.clusterlabs.org/blog/2014/potential-for-data-corruption-in-pacemaker-1-dot-1-6-through-1-dot-1-9/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pacemaker/+bug/1312156/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-ha Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-ha More help : https://help.launchpad.net/ListHelp
