> 
> >
> > My use case would be a HA cluster where a VM is mapping an rbd image,
> and then it encounters some network issue. An other node of the HA
> cluster could start the VM and map again the image, but if the
> networking is fixed on the first VM that would keep using the already
> mapped image. Here If I could instruct my second VM to treat the lock as
> exclusive after an automatic failover, then I'm protected against data
> corruption when the networking of initial VM is fixed. But I assume that
> a STONITH kind of fencing could also do the job (if it can be
> implemented).

Is it already possible to configure libvirt directly for this, or are the hook 
scripts still necessary?


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