[Drbd-dev] Troubleshooting digest failures?

Lars Ellenberg lars.ellenberg at linbit.com
Wed Aug 6 18:04:09 CEST 2008

On Wed, Aug 06, 2008 at 08:56:25AM -0600, Gregor Mosheh wrote:
> Hey guys.

Hello again.

Sorry for the joke, but I cannot help it.
You know the story about "The hare and the hedgehog"?

> I've gotten no response from the user list,

now, that is not entirely true ;)

> so maybe it's time  
> for a different tack debugging DRBD's innards...
> I've been having a problem which I describe here. The last posting is  
> probably the most relevant.
> http://www.gossamer-threads.com/lists/drbd/users/15119
> How would I go about debugging this?  Is there extra logging or
> debugging  which I can enable? Have any of you seen this before?

appart from what I wrote in your thread, and the 
"What causes nodes to become out-of-sync?" thread,
there is not much else I can say.

You said you have an other cluster, not yet in production, where it did
not occur so far, and you suggest it may be just the missing load that
makes it "appear" healthy.

How about using it as test setup, and generate load on it,
until you can provoke the symptom there, too?

To reverse that, if you cannot provoke the symptom there,
I'd still point to hardware issues on the affected cluster.


: Lars Ellenberg                            Tel +43-1-8178292-55 :
: LINBIT Information Technologies GmbH      Fax +43-1-8178292-82 :
: Vivenotgasse 48, A-1120 Vienna/Europe    http://www.linbit.com :

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