On 11.09.2018 16:31, Patrick Whitney wrote:
But, when I invoke the "human" stonith power device (i.e. I turn the
node off), the other node collapses...
In the logs I supplied, I basically do this:
1. stonith fence (With fence scsi)
At this point DLM on a healthy node is notified that node was fenced and
expects no connections from DLM on a fenced node. What happens if it
sees such connection is hidden deep in code.
2. verify UI shows fenced node as stopped
Then I wouldn't trust such UI.
3. power off fenced node
It's only when I shut down the fenced node that the running node falls
over.
How would using a power fencing agent differ from me manually removing
power?
There is a delay between fence success notification to DLM and actual
power off. With power fencing notification goes after power is cut.
Thanks (I very much appreciate the discussion!)
Best,
-Pat
Would it be useful to show logs of what that looks like?
On Tue, Sep 11, 2018 at 9:22 AM Valentin Vidic <valentin.vi...@carnet.hr
<mailto:valentin.vi...@carnet.hr>> wrote:
On Tue, Sep 11, 2018 at 09:13:08AM -0400, Patrick Whitney wrote:
> So when the cluster suggests that DLM is shutdown on coro-test-1:
> Clone Set: dlm-clone [dlm]
> Started: [ coro-test-2 ]
> Stopped: [ coro-test-1 ]
>
> ... DLM isn't actually stopped on 1?
If you can connect to the node and see dlm services running than
it is not stopped:
20101 dlm_controld
20245 dlm_scand
20246 dlm_recv
20247 dlm_send
20248 dlm_recoverd
But if you kill the power on the node than it will be gone for sure :)
--
Valentin
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--
Patrick Whitney
DevOps Engineer -- Tools
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