RFC: Re-validate LVB

Hi All,

Since there is not a convenient way to re-validate the LVB in current
OpenDLM, I suggest to add a dedicated flag to do this work. There is a
possible usage model in my mind: 

When a lock client want to re-validate a LVB, it can specify
LKM_REVALIDLVB (just for example) and issue a conversion to the same
lock mode. And the resource master will re-validate the LVB when it
receive the lock request, regardless of the lock mode.

It can work as a temporary solution before we get "recovery domain". Any
comments/suggestion?

Best Regards,
Stan
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