How do,
I just tried to go from -stable (built on Feb 24th) to -current, fresh
yesterday (Thursday).
"make buildworld" completed cleanly, and following /usr/src/UPDATING I
made and installed a fresh kernel, and updated /dev (by running
"MAKEDEV da0s1a" and "MAKEDEV da1s1a" with a -current mknod).
Then I rebooted (without doing an "installworld", UPDATING says you do
this *after* the reboot).
The new kernel boots, but fails to mount the disks. Thinking this was
just a mismatch between the kernel and the mount binary, I dug out my
fixit floppy, got back in to the system, installed the new mount binaries
(including the mount_* ones), and tried to reboot. This time, the system
froze after the last kernel message was printed, but before the "swapon"
message appears. This was a complete lock, the LED keys didn't work,
neither did CTRL-ALT-DEL.
Thinking there was something odd in my kernel config file, I recovered the
system again, got back in, and built a -current GENERIC kernel, figuring
that it should definitely work. I tried rebooting with this, and got an
error message from the npx probe and an immediate reboot. That happened
so quickly I couldn't get a good look at it, but the word "nexus" was
in there somewhere. I stress this was with a stock GENERIC -current
kernel (but built on a 3.4 system).
Have I just hit a bad patch? I've been following the -current list for
years, and watch for problems religiously -- I figured with the OpenSSL
stuff out of the way, this was as good a time as any.
On a related note, why does UPDATING say to build and install the kernel,
and then reboot, before doing the "installworld"? That contradicts the
advice in the Handbook (which I wrote), and I would've thought it's wrong
precisely because it allows for things like kernel/mount mismatches to
occur.
I'd be very surprised if this is hardware failure. This system has been
rock solid on all versions of 3.x, and gets stressed quite highly most
days.
I realise I haven't been able to provide a great deal of information about
this, but I hope it rings bells with someone.
N
--
If you want to imagine the future, imagine a tennis shoe stamping
on a penguin's face forever.
--- with apologies to George Orwell
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