Cannot mount / from UFS labels

[Ulrich Spörlein]

On Fri, 21.08.2009 at 18:07:00 +0200, Ulrich Spörlein wrote:
> On Fri, 21.08.2009 at 09:41:30 -0500, Rick C. Petty wrote:
> > On Fri, Aug 21, 2009 at 03:17:23PM +0200, Ulrich Spörlein wrote:
> > > # tunefs -L root / (in single user)
> > > then updated /etc/fstab and rebooted
> > 
> > Was / mounted read-write at the time?  After the tunefs, you should have
> > seen some messages on the console related to the labels.
> 
> Not quite, the dmesg spammage has been quenched in RELENG_8 and the
> label *did* show up in dumpfs and /dev/ufs. But I now tried again, and
> re-mounting the / filesystem r/w makes the label go away.
> 
> So I guess I need to boot a live system first and have the label created
> from "outside". Now where is that USB stick ...

Just to clarify, this worked.

What's broken is tunefs on / in single user mode. The change is seen by
dumpfs but will not survive a reboot. I guess that's ok, though.

Uli