[DRBD-user] GFS2 freezes

Felix Frank ff at mpexnet.de
Wed Oct 31 09:30:47 CET 2012

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

On 10/31/2012 12:02 AM, Lars Ellenberg wrote:
>>> Manual fencing is not in any way supported. You must be able to call
>>> > > 'fence_node <peer>' and have the remote node reset. If this doesn't
>>> > > happen, your fencing is not sufficient.
>> > fence_node <peer> doesn't work for me
>> > 
>> > fence_node node2 says
>> > 
>> > fence node2 failed
> Which is why you need a *real* fencing device
> for automatic fencing.

...which is bound to sound more than a little cryptic to the
uninitiated, I assume.

An example for a "classical" fencing method is a power distribution unit
with network access. The surviving node accesses the PDU and cuts the
power to its peer.
This is just one example. Similar results can be achieved using
IPMI/ILOM technologies etc.


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