[DRBD-user] Heartbeat & DRBD.SplitBrain.Auto recovering

Francisco José Méndez Cirera mendezirera at gmail.com
Wed Nov 19 17:37:30 CET 2008

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

I have the following config now:

after-sb-0p discard-younger-primary
after-sb-2p violently-as0

If DRBD finds two primaries after SplitBrain, it should discard the changes
on younger primary node and starts sync.
However, nothing happens, and I have to solve the split brain manually.
Nodes lose communication forever..(WFConnection and Standalone)

How can I resolve Split Brain automatically? I want that the primary younger
node discards changes after both nodes can communicate in order to replicate
all the modificsations, once the split brain is solved , automatically!


2008/10/31 Francisco José Méndez Cirera <mendezirera at gmail.com>

> I have redundant communication paths but for testing purposes I have only
> one.
> Use dopd is a good idea, but I have a problem with this. If the secondary
> node mount the partition with "outdated data", DRBD disallows promoting and
> the secondary node can´t read and write. The secondary node needs read and
> write for the application.
> How Can I do automatic recovering?
> Now I can do with manual recovering, because always I will discard the data
> of the secondary node:
>    drbdadm secondary r0
>    drbdadm -- --discard-my-data connect r0
> if not, then...
> "after-sb-0p discard-younger-primary" and "after-sb-2p violently-as0". What
> are the uses?
> --
> Francisco José Méndez Cirera
> MendeZirerA at gmail.com "sin la C ni ná"
> +34 636740507 (MoviStar)
> +34 622875657 (Yoigo)

Francisco José Méndez Cirera
MendeZirerA at gmail.com "sin la C ni ná"
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