As Matthew Jacob wrote ... > Yes. The Solaris drivers use the 'localetheraddr' function, or's in 1<<60 > and then HBA instance # << 48 to make a NAA_IEEE port identifier. > > > > > The main issue, I think, is that of persistence. How persistent do > > you want it? I'd bet that no matter what source you use, there's > > always the problem of "it broke; I had to replace it; now what?". > > Kind of like your grandfather's axe, which has had six handles and > > two blades over its lifetime, but it's still your grandfather's axe. > > I want it to persist until it's changed. Change doesn't mean a reboot. > > The practical side of this problem, which is a relatively trivial problem, > is to supply a consistent node WWN for fibre channel adapters that don't > have an assigned WWN in NVRAM. This only needs to be persistent across > reboots when I finish implementing the target mode code- a WWN identifying > a system as a 'device' needs to persist until told to change.
FYI: The Compaq HSG80 Fibrechannel RAID controllers have their WWN in NVRAM. One is supposed to get the WWN from a label on the *cabinet* into the HSG controller. This allows for easy hardware swap in case of hardware grief. -- | / o / / _ Arnhem, The Netherlands - Powered by FreeBSD - |/|/ / / /( (_) Bulte WWW : http://www.tcja.nl http://www.freebsd.org To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
