Public bug reported: Ubuntu 10.04 Lucid with 2.6.32-41 kernel and drbd8
Kernel 2.6.32-41 fixed a consistency issue around UMH_WAIT_PROC in this bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/963685 This causes the drbd fencing script's exit codes to be incorrectly interpreted which then breaks the drbd fencing: To replicate: Have fencing enabled in drbd config: In handlers section: fence-peer "/usr/lib/drbd/crm-fence-peer.sh" In the disk section: fencing resource-only; Have both drbd nodes uptodate with one primary one secondary Make the fence-peer get executed. I did this by: Having drbd under pacemaker control. Both pacemaker nodes were online and in-sync. Drbd in primary on node 1. Put node 1 in standby. Fence-peer will get executed. Fence handler will report fence-peer exited with 0 (broken) - such as this: May 15 09:45:17 kernel: [56645.420714] block drbd0: helper command: /sbin/drbdadm fence-peer minor-0 May 15 09:45:17 kernel: [56645.420920] block drbd0: helper command: /sbin/drbdadm fence-peer minor-0 exit code 0 (0x0) May 15 09:45:17 kernel: [56645.420925] block drbd0: fence-peer helper broken, returned 0 If you log debug output of fence-peer script (crm-fence-peer.sh) when executed it exits 4 not the kernel reported 0. This commit in drbd git should fix this behavior: http://git.drbd.org/gitweb.cgi?p=drbd-8.3.git;a=commitdiff;h=e6cbc43 This will cause complete failure of a drbd setup using fencing to auto-recover or continue without manual intervention and repair. ** Affects: drbd8 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Also affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to drbd8 in Ubuntu. https://bugs.launchpad.net/bugs/1000355 Title: drbd fence-peer breaks when using kernel 2.6.32-41 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/drbd8/+bug/1000355/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
