Hi,

On 10/13/2016 04:36 PM, Ulrich Windl wrote:
Eric Ren <z...@suse.com> schrieb am 13.10.2016 um 09:48 in Nachricht
<73f764d0-75e7-122f-ff4e-d0b27dbdd...@suse.com>:
[...]
When assuming node h01 still lived when communication failed, wouldn't
quorum prevent h01 from doing anything with DLM and OCFS2 anyway?
Not sure I understand you correctly. By default, loosing quorum will make
DLM stop service.
That's what I'm talking about: If 1 of 3 nodes is rebooting (or the cluster is 
split-brain 1:2), the single node CANNOT continue due to lack of quorum, while 
the remaining two nodes can. Is it still necessary to wait for completion of 
stonith?
quorum and fencing completion are different conditions to be checked before starting providing service again. FYI,


https://github.com/renzhengeek/libdlm/blob/master/dlm_controld/cpg.c#L603

See `man dlm_controld`:
```
--enable_quorum_lockspace 0|1
                 enable/disable quorum requirement for lockspace operations
```
Does not exist in SLES11 SP4...
Well, I think it's better to keeps the default behavior. Otherwise, it's dangerous when brain-split happens.

Eric

Ulrich



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