OT: just crashed two FreeBSD-11.1-RELEASE machines
freebsd at edvax.de
Wed Feb 14 00:26:46 UTC 2018
On Tue, 13 Feb 2018 16:56:12 -0600, Valeri Galtsev wrote:
> I just crushed two (one at a time) FreeBSD-11.1-RELEASE machines. I
> simply plugged my Sony video camera which was in the mode of exporting
> its (msdos) filesystems over USB. Both machines have decent hardware,
> plenty of resources. Regular user was logged in to X11. One of the
> filesystems was mounted (the one holding AVCHD videos), and two seconds
> later the machine started booting (like "crashed").
> And now I'm sitting in prostration and thinking: What is that I will do
Gather debugging data. Reduce automatisms and check each step
manually. Try to find out the exact "thing" that brought down
the system (it's hard to tell when X is running and doing its
Many years ago, I had a similar problem, but when _detaching_
the camera from the system (internal filesystem was already
unmounted, and previous access to it went as expected)...
This was, I think, in FreeBSD 5 times, and after a system
update, the problem went away. So I never found out what the
actual problem was - but it could be reproduced any time,
even in single user mode: insert USB plug, system recognizes
da0 device (as intended), wait a few seconds, remove USB plug,
system panic, kernel crash. After update: regular "disconnect"
message, nothing else, system kept running.
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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