Hi,
on several pacemaker clusters I sometimes see ORPHANED (DRBD) resources. In
some cases they exist only for a short time and are automatically removed.
But in other cases the resource will fail. "crm status" then looks like that:
Master/Slave Set: ms-res1 [drbd-res1]
drbd-res1:0 (ocf::linbit:drbd): Master server-v2.linux-ag.com
(unmanaged) FAILED
drbd-res1:2 (ocf::linbit:drbd): ORPHANED Master
server-v2.linux-ag.com (unmanaged) FAILED
Slaves: [ server-v1.linux-ag.com ]
This happens although DRBD is running fine without any problems.
The pacemaker log shows entries like this:
Apr 25 20:07:46 server-v2 pengine: [21702]: notice: LogActions: Leave
drbd-res1:0#011(Master server-v2.linux-ag.com)
Apr 25 20:07:46 server-v2 pengine: [21702]: notice: LogActions: Start
drbd-res1:1#011(server-v1.linux-ag.com)
Apr 25 20:07:46 server-v2 pengine: [21702]: notice: LogActions: Stop
drbd-res1:2#011(server-v2.linux-ag.com)
Apr 25 20:07:48 server-v2 pengine: [21702]: notice: LogActions: Leave
drbd-res1:0#011(Master server-v2.linux-ag.com)
Apr 25 20:07:48 server-v2 pengine: [21702]: notice: LogActions: Leave
drbd-res1:1#011(Slave server-v1.linux-ag.com)
Apr 25 20:07:48 server-v2 pengine: [21702]: notice: LogActions: Stop
drbd-res1:2#011(server-v2.linux-ag.com)
In what cases are ORPHANS created? How are they usually handled or how can I
get rid of them? How could I debug this situation, e.g. which log entires are
of interest?
I suppose that these ORPHANS (sometimes) appear after a cluster node was
offline (or in maintenance mode) and then rejoins the cluster. But not too
sure about that...
The clusters are based on Ubuntu 10.04 LTS with
- heartbeat 3.0.5
- pacemaker 1.1.6
Thanks for any hint,
Thilo
--
Thilo Uttendorfer
Linux Information Systems AG
Putzbrunner Str. 71, 81739 München
Fon: +49 89 993412-11, Fax: +49 89 993412-99
t.uttendor...@linux-ag.com, http://www.linux-ag.com
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