Re: [PATCH 02/24] scsi-multipath: introduce basic SCSI device support

[Benjamin Marzinski <bmarzins@redhat.com>]

On Mon, Mar 02, 2026 at 11:39:28AM +0000, John Garry wrote:
> On 02/03/2026 02:22, Benjamin Marzinski wrote:
> > > diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
> > > index 19d0884479a24..cfab7ad1e3c2c 100644
> > > --- a/drivers/scsi/Kconfig
> > > +++ b/drivers/scsi/Kconfig
> > > @@ -76,6 +76,16 @@ config SCSI_LIB_KUNIT_TEST
> > >   	  If unsure say N.
> > > +config SCSI_MULTIPATH
> > > +	bool "SCSI multipath support"
> > At least until this supports ALUA, it should probably be marked
> > EXPERIMENTAL, just so people trying it out aren't surprised if it
> > doesn't multipath their device in the way they expect.
> 
> I think that ALUA support will be mainline acceptance criteria, and I am
> looking to add it now.
> 
> BTW, Hannes suggested to not use the DH ALUA support, so that means to
> separate out the core ALUA support from the DH stuff. So you have any
> opinion on that approach?

I would (perhaps naively) have thought that the device handlers would be
a useful abstraction for dealing with ALUA devices. But, Hannes knows
this code much better than me. like I said before, I'm no scsi expert.

-Ben

> 
> Thanks!