On 30/07/18 08:24, Ulrich Windl wrote: > Hi! > > We have a strange problem on one cluster node running Xen PV VMs (SLES11 > SP4): After updating the kernel and adding new SBD devices (to replace an old > storage system), the system just seems to freeze.
Hi, Which version of Xen are you using and what Linux distribution is run in Dom0? > Closter inspection showed that SBD seems to send an NMI (for reasons still to > be examined), and the current Xen/Kernel seems to be unable to handle the NMI > in a way that forces a restart of the server (see attached screen shot). Can you show us your kernel boot cmdline, and loaded modules? Which watchdog module did you load? Have you tried xen_wdt? See https://www.suse.com/support/kb/doc/?id=7016880 Best regards, --Edwin > > The last message I see in the node's cluster log is this: > Jul 27 11:33:32 [15731] h01 cib: info: cib_file_write_with_digest: > Reading cluster configuration file /var/lib/pacemaker/cib/cib.YESngs > (digest: /var/lib/pacemaker/cib/cib.Yutv8O) > > Other nodes have these messages: > Jul 27 11:33:32 h05 dlm_controld.pcmk[15810]: dlm_process_node: Skipped > active node 739512330: born-on=3864, last-seen=3936, this-event=3936, > last-event=3932 > > Jul 27 11:33:32 h10 dlm_controld.pcmk[20397]: dlm_process_node: Skipped > active node 739512325: born-on=3856, last-seen=3936, this-event=3936, > last-event=3932 > > Can anybody bring some light into this issue?: > 1) Under what circumstances is an NMI sent by SBD? > 2) What is the reaction expected after receiving an NMI? > 3) If it did work before, what could have gone wrong? > > I wanted to get some feedback from here before asking SLES support... > > Regards, > Ulrich > > > > > _______________________________________________ > Users mailing list: [email protected] > https://lists.clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org > _______________________________________________ Users mailing list: [email protected] https://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
