[Novalug] kernel pci probe question

[Mark Smith]

i'm assuming the boot order is cdrom first.  i then boot off of a
cdrom, it runs isolinux and in moments there is a running linux
kernel.  what happens after that is the interesting bits.  /dev/sda,
/dev/sdb, /dev/sdc, ... are fixed via the kernel's own pci probe.

On Thu, Apr 03, 2008 at 05:17:05PM -0400, greg pryzby wrote:
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> I don't recall the specifics, but I do recall that you can use by-name
> and that uses a long identifier (or maybe it was by-identifier) that
> isn't dependent on boot order.
> 
> maybe I will research it later and see if I can find the answer....
> 
> Mark Smith 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?
> > 
> > 
> 
> - --
> greg pryzby                              greg at pryzby dot org
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-- 
Mark Smith
mark at winksmith.com
mark at tux.org