Re: add rules for new aoe character devices

["Ed L. Cashin" <ecashin@coraid.com>]

On Mon, Dec 03, 2007 at 07:42:58PM +0100, Kay Sievers wrote:
> On Mon, 2007-12-03 at 13:38 -0500, Ed L. Cashin wrote:
> > On Mon, Dec 03, 2007 at 07:15:03PM +0100, Kay Sievers wrote:
...
> > > Does this rule work for you? It should move all nodes into a subdir:
> > >   SUBSYSTEM="aoe",              NAME="etherd/%k"
> > 
> > Yes, that's good for the block devices.  In the past it seems that
> > rule doesn't guarantee the creation of the character device nodes,
> > though, and that is why there is a separate rule for each character
> > node in the patch I sent.  I haven't checked yet whether the latest
> > udev and kernel still behave the same way.
> 
> Block devices always have SUBSYSTEM="block", this will only handle the
> char devices. You want the block devices to be in a subdir?

Yes, the normal arrangement is for the "etherd" subdirectory in /dev
to contain the character and block devices for the aoe driver.  It
looks like,

  ecashin@ellijay:~$ ls -l /dev/etherd 
  total 0
  c-w--w---- 1 root disk 152,  3 Dec  7 16:24 discover
  brw-rw---- 1 root disk 152, 16 Dec  7 17:02 e7.0
  brw-rw---- 1 root disk 152,  0 Dec  7 17:02 e7.1
  cr--r----- 1 root disk 152,  2 Dec  7 16:24 err
  c-w--w---- 1 root disk 152,  6 Dec  7 16:24 flush
  c-w--w---- 1 root disk 152,  4 Dec  7 16:24 interfaces
  c-w--w---- 1 root disk 152,  5 Dec  7 16:24 revalidate
  ecashin@ellijay:~$ 

(The block device minor numbers are different for this aoe6-55 driver
than they would be for earlier versions.  This aoe6-55 driver relies
on udev and assigns minor numbers dynamically.  Older drivers can't do
that, and so have a more limited range of possible AoE shelf and slot
addresses.)

-- 
  Support - http://www.coraid.com/support/howto.html
  Ed L Cashin <ecashin@coraid.com>

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