[DRBD-user] Active node conflict

Lars Ellenberg Lars.Ellenberg at linbit.com
Wed Nov 2 19:55:43 CET 2005

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

/ 2005-11-02 08:41:25 +0100
\ jlarrea at gadisa.es:
> Hi all,
> Today morning I've noticed that I was not able to access to my files stored
> on a RH-EL 3 (Kernel 2.4) + Heartbeat, stonith and drbd 0.7.11 samba
> cluster. The question is that I see the two nodes up, one of them with drbd
> resources acquired, but the other one with samba processes up. I've
> restarted one of them and everything solved, but I don't know what
> happened. I'm thinking on a network failure during night, but not sure. May
> be both nodes lost heartbeat connection and decided to be 'Active' and when
> network restores connection they don't know what to do, notr sure. But what
> can I do to prevent this?

first, analyse what happened.
find the heartbeat log files.  find the relevant time period.
try to understand what heartbeat is telling you there.
correlate with drbd related kernel messages in syslog.

: Lars Ellenberg                                  Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :
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