[Novalug] kernel pci probe question

[Maxwell Spangler]

Is this a case of having three hard drives total and you want:

/dev/sda root
/dev/sdb programs
/dev/sdc data

In which case if the system occasionally finds the data drive first
you'll have:

/dev/sda root
/dev/sdb data
/dev/sdc programs

Assuming that is correct, we're not talking about mount points, are we?
I'm guessing your application wants to 1) find a /dev/sdb and /dev/sdc
2) find the right devices and data associated with them and 3) start
doing something with them.

If you are simply trying to get pre-configured filesystems mounted in
the same place so your app can start using their data, consider 'devfs'.
Devfs would let you identify devices by make/model, unique serial
number, etc., and let you configure devfs rules to put them where you
want.. So drive #1 which might be /dev/sda or /dev/sdb would always put
at /data..

hth.

On Fri, 2008-04-04 at 10:16 +1300, Mark Smith wrote:
> i should have been more clear.  i'm talking about after the kernel
> has booted.  once the kernel is running doesn't it do its own probe?
> 
> On Thu, Apr 03, 2008 at 04:16:13PM -0400, Ken Kauffman wrote:
> > Yes.  Boot order!!!
> >  want
> > On 4/3/08, Mark Smith <mark at winksmith.com> wrote:
> > > my company makes an appliance-like device which includes linux as
> > > its core.  our software is setup to use specific devices for specific
> > > file systems.  in particular we have one appliance with a RAID setup
> > > which is on sda.  the problem is that every now and then it shows
> > > up on a different device special file.
> > >
> > > my questions...
> > >
> > > is there any possible setting in the BIOS that can change the
> > > ordering of devices?  it was my understanding that the kernel does
> > > its own hardware probe and does not rely on anything the BIOS
> > > provides in that regard.
> > >
> > > what else could change the ordering of devices sans actually moving
> > > the card position in the chassis or the connectors on the disk arrays?
> > >
> > >
> > > --
> > > Mark Smith
> > > mark at winksmith.com
> > > mark at tux.org
> > > _______________________________________________
> > > Novalug mailing list
> > > Novalug at calypso.tux.org
> > > http://calypso.tux.org/cgi-bin/mailman/listinfo/novalug
> > >
>