[DRBD-user] Strange node reboot

Heiko rupertt at gmail.com
Thu Oct 16 14:47:26 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Fri, Oct 10, 2008 at 9:05 AM, Mickaël Canévet <canevet at embl.fr> wrote:
> On Thu, 2008-10-09 at 14:46 +0200, Florian Haas wrote:
>> Mickaël,
>> you've given no information about your DRBD version, kernel version, Xen
>> hypervisor version, distribution, kernel configuration, sysctl settings
>> ... in essence you've completely reduced us to wild guessing.
>> Can you please provide that information? Otherwise I fail to see how we
>> would be able to help you out.
>> Cheers,
>> Florian
> Sorry for the lack of informations:
> - Distribution: CentOS 5.2 64bits
> - Kernel: 2.6.18-92.1.13.el5xen
> - DRBD: drbd82-8.2.6-1.el5.centos
> - Xen: 3.3.0
today we have another pair of machine that does these reboots,
sometimes it did it every 5 minutes.
Right now I only have one VM running and disabled heartbeat,
it seems to work atm.
Can a faulty VM trigger this behaviour or is it heartbeat?

these are the packages that are installed,
i remember disabling the drbd82 package, which one should we prefer
and are both version compatible?

drbd.x86_64                              8.0.13-1.el5.centos    installed
drbd82.x86_64                            8.2.6-1.el5.centos     installed
kmod-drbd-xen.x86_64                     8.0.12- installed
kmod-drbd-xen.x86_64                     8.0.13- installed
kernel-xen.x86_64                        2.6.18-92.1.13.el5     installed
kernel-xen.x86_64                        2.6.18-92.1.10.el5     installed
kernel-xen.x86_64                        2.6.18-92.1.6.el5      installed
xen.x86_64                               3.0.3-64.el5_2.3       installed
xen-libs.x86_64                          3.0.3-64.el5_2.3       installed
heartbeat.x86_64                         2.1.3-3.el5.centos     installed
heartbeat-pils.x86_64                    2.1.3-3.el5.centos     installed
heartbeat-stonith.x86_64                 2.1.3-3.el5.centos     installed



> I tried to join my kernel configuration and sysctl settings but the mail
> was rejected because it was too big.
> The kernel is the one provided by CentOS, and I didn't add any conf
> in /etc/sysctl.conf.
> When I unplug the dedicated network cable with some (5) Virtual Machines
> launched, the reboot of both nodes is systematic. It doesn't happen when
> the resources are just promote as primary, so the problem may comes from
> Xen or an bad interaction between Xen and DRBD (Xen access DRBD
> resources threw block-drbd script).
> I tried to setup a serial console as suggested by Iustin Pop, but I
> don't know how to do this with Xen even following this:
> http://www.centos.org/docs/5/html/Virtualization-en-US/ch-virt-trouble-serial.html
> Cheers
> Mickaël
> --
> _______________________________________________________________________
> Mickaël Canévet.
> European Molecular Biology Laboratory (EMBL)
> Grenoble Outstation. FRANCE
> _______________________________________________________________________
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> drbd-user mailing list
> drbd-user at lists.linbit.com
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