Re: [SUBJECT CHANGE]: megaraid unified driver version 2.20.0.0-alpha1

[Matt Domsch <Matt_Domsch@dell.com>]

On Wed, Feb 25, 2004 at 05:35:40PM +0000, Matthew Wilcox wrote:
> On Wed, Feb 25, 2004 at 11:28:39AM -0600, Matt Domsch wrote:
> > The list of PCI devices should be ordered in two buckets: ROMBs first,
> > then add in cards; secondarily, oldest to newest.  We do this with
> > aacraid today.
> 
> In 2.4, you can do what you like.  The list of PCI devices is in PCI
> bus number order, and that's the order you get when you use the hotplug
> interfaces.

Ahh, yes, of course.  

> Yes, this is a painful customer-visible change, but if they use scsi
> discs, they must already be used to devices changing name at random.

Well, to be fair, most people count on it not changing, i.e. it is
deterministic at least, such that if you don't change hardware or add
logical drives, you won't see any changes between boots.  For most
users, file system labels serve quite well to keep things consistent.
For swap, raw devices, and the like, devlabel or udev are used, but at
least devlabel (sorry Greg, I haven't played with udev too much yet)
uses SCSI inquiry page 83 or 80 data if it's there, which megaraid
doesn't provide.

For the install scenario, EDD (which megaraid *does* provide) will
suffice, but I need to get distro installers to start using it. ;-)
Oh, and get it working on x86-64.  That should be easy, soon as I have
access to such a system for a few days.


-- 
Matt Domsch
Sr. Software Engineer, Lead Engineer
Dell Linux Solutions linux.dell.com & www.dell.com/linux
Linux on Dell mailing lists @ http://lists.us.dell.com