Re: PATCH: Multiprobe sanitizer

[Arjan van de Ven <arjan@infradead.org>]

On Thu, 2006-08-17 at 14:37 +0200, Benjamin Herrenschmidt wrote:
> On Thu, 2006-08-17 at 05:22 -0700, Greg KH wrote:
> > On Thu, Aug 17, 2006 at 02:12:57PM +0200, Benjamin Herrenschmidt wrote:
> > > On Thu, 2006-08-17 at 05:00 -0700, Greg KH wrote:
> > > > On Thu, Aug 17, 2006 at 11:24:35AM +0200, Benjamin Herrenschmidt wrote:
> > > > > Probe ordering is fragile and completely defeated with busses that are
> > > > > already probed asynchronously (like USB or firewire), and things can
> > > > > only get worse. Thus we need to look for generic solutions, the trick of
> > > > > maintaining probe ordering will work around problems today but we'll
> > > > > still hit the wall in an increasing number of cases in the future.
> > > > 
> > > > That's exactly why udev was created :)
> > > > 
> > > > It can handle bus ordering issues already today just fine, and distros
> > > > use it this way in shipping, "enterprise ready" products.
> > > 
> > > Only up to a certain point and for certain drivers... but yeah. 
> > 
> > What drivers are not supported by this?  Seriously, have we missed any?
> 
> udev will not create stable names for a bunch of things... at least not
> with the default config that comes with distros. On my shuttle with the
> built-in USB card reader, whatever config comes up with the box will
> cause the machine to boot or fail to boot due to sda not beeing what
> it's expected to be, and udev is of no help because it won't create
> stable device names. 

that's what mount by label is for though..

(which isn't a udev but a distro thing)

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