[dm-devel] Query: Significance of libmultipath/hwtable.c

[Kumar amit mehta]

On Wed, Jun 12, 2013 at 08:15:04PM +0200, Christophe Varoqui wrote:
> On mer., 2013-06-12 at 11:45 +0530, amit mehta wrote:
> > What is the significance of libmultipath/hwtable.c file. I see there
> > is a list of vendors mentioned over here.
> > 
> > <snip>
> > 
> It's a database of defaults settings for known devices.
> Those settings apply when not overriden by explicit settings in
> multipath.conf.
>   
> 
> > grep -i vendor libmultipath/hwtable.c|uniq
> >         .vendor        = "COMPELNT",
> >         .vendor        = "APPLE*",
> >         .vendor        = "3PARdata",
> >         .vendor        = "DEC",
> >         .vendor        = "HP",
> >         .vendor        = "(COMPAQ|HP)",
> >         .vendor        = "HP",
> >         .vendor        = "DDN",
> >         .vendor        = "EMC",
> >         .vendor        = "DGC",
> >         .vendor        = "EMC",
> >         .vendor        = "FSC",
> >         .vendor        = "FUJITSU",
> >         .vendor        = "HITACHI",
> >         .vendor        = "IBM",
> >         .vendor        = "IBM",
> >         .vendor        = "AIX",
> >         .vendor        = "IBM",
> >         .vendor        = "AIX",
> >         .vendor        = "IBM",
> >         .vendor        = "AIX",
> >         .vendor        = "DELL",
> >         .vendor        = "NETAPP",
> >         .vendor        = "IBM",
> >         .vendor        = "Pillar",
> >         .vendor        = "SGI",
> >         .vendor        = "STK",
> >         .vendor        = "SUN",
> >         .vendor        = "PIVOT3",
> >         .vendor        = "SUN",
> >         .vendor        = "(LSI|ENGENIO)",
> >         .vendor        = "STK",
> >         .vendor        = "EUROLOGC",
> >         .vendor        = "NEC",
> >         .vendor        = NULL,
> > 
> > <snip>
> > 
> > 
> > Under each of these vendors, there is a list of products from the same
> > vendor as well. So does that mean, if the vendor and or product is
> > not 
> > mentioned in this file, that particular storage hardware may not be 
> > supported by dm-multipath?
> > 
> It only means that the top-level defaults settings will be applied to
> those multipaths.
>

Thank you for clearing my doubt.

-Amit