RE: RE: [Opendlm-devel] ODLM/OGFS Recovery

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On Tue, 2004-05-04 at 14:35, Zickus II, Don wrote:
> > > I think this is handled during ODLM's lock recovery process, which=20
> > > invalidates LVBs that might have been altered by a dead node.  See
> > > clmr_clean() and clmr_lkvlb().
> >=20
> > Yes, ODLM will invalidate LVBs that might have been altered=20
> > by a dead node. But my concern is :=20
> >=20
> > If there is only one PW or EX lock request in the wait queue=20
> > of this resource, we won't get DLM_VALNOTVALID (even the LVB=20
> > of this resouce is
> > invalid) when the queued request is granted.
> >=20
> > It means that we might miss some locks held by dead node.=20
> > Please read:=20
> > rc_barrier6->wake_all_locks->convert_locks->grant_convert->valueblock
> >=20
> > Any comments?
> >=20
>=20
> By the time it gets to valueblock, the resource has already been invalida=
ted such that the only code path it would take in valueblock() is the very =
last _else_ statement (assuming the first node with the granting lock will =
also be the master) which returns DLM_VALNOTVALID.
>=20
> Do you see it differently?

Sorry, I mis-unstanded the first "if-eles" :( You are right.

Thanks a lot !

Best Regards,
Stan
--=20
Opinions expressed are those of the author and do not represent Intel
Corporation
=20
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