Re: [PATCH 66/74] libmultipath: update_pathvec_from_dm: handle pp->mpp mismatch

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On Sun, 2020-07-19 at 00:12 -0500, Benjamin Marzinski wrote:
> On Thu, Jul 09, 2020 at 12:51:37PM +0200, mwilck@xxxxxxxx wrote:
> > From: Martin Wilck <mwilck@xxxxxxxx>
> > 
> > Treat this like a WWID mismatch.
> > 
> > Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
> > ---
> >  libmultipath/structs_vec.c | 37 +++++++++++++++++++++++-----------
> > ---
> >  1 file changed, 23 insertions(+), 14 deletions(-)
> > 
> > diff --git a/libmultipath/structs_vec.c
> > b/libmultipath/structs_vec.c
> > index 5dd37d5..8651b98 100644
> > --- a/libmultipath/structs_vec.c
> > +++ b/libmultipath/structs_vec.c
> > 
> > [...]
> > +		bad_path:
> > +			/*
> > +			 * This path exists, but in the wrong map.
> > +			 * We can't reload the map from here.
> > +			 * Instead, treat this path like "missing
> > udev".
> > +			 * check_path() will trigger an uevent and
> > reset pp->tick.
> > +			 */
> > +			must_reload = true;
> > +			pp->mpp = NULL;
> > +			dm_fail_path(mpp->alias, pp->dev_t);
> > +			vector_del_slot(pgp->paths, j--);
> > +			pp->initialized = INIT_MISSING_UDEV;
> > +			pp->tick = 1;
> 
> Is there a reason not to call orphan_path() to clean up things like
> any
> open fd, until we figure out what to do with the path.

Thanks for the suggestion. It makes sense for the 2nd "bad_path"
condition but not for the first. I'll treat the two cases differently.

Regards
Martin


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