Re: netbsd-7 kernel and older vnconfig(8)

[christos%zoulas.com@localhost (Christos Zoulas)]

On Nov 9,  9:48pm, kre%munnari.OZ.AU@localhost (Robert Elz) wrote:
-- Subject: Re: netbsd-7 kernel and older vnconfig(8)

|     Date:        Mon, 9 Nov 2015 13:53:13 +0000 (UTC)
|     From:        christos%astron.com@localhost (Christos Zoulas)
|     Message-ID:  <n1q8g9$s9g$1%ger.gmane.org@localhost>
| 
|   | Can't we pull this change up? Or does it break old kernels?
| 
| It would be easy, but it is the wrong solution - keeping backwards compat
| cannot be achieved by changing the old systems, ever, we have to do it in
| the new system, which generally NetBSD does a good job of.
| 
| If you apply the fix I sent in the previous message, assuming it works,
| which I believe it will, then the change to the way that vndconfig -l
| works could be reverted, meaning that it wouldn't need to waste time
| reading /dev (assuming that's where the devices are actually created)and 
| looking for the magic "rvnd" string, which is not really a reliable way
| to find devices.

We'll need to keep track of the maximum index currently in use, because
if you destroy vnds in the middle, you get ENXIO too. Or do I mis-remember?

christos