[Bug 212681] I/O is slow for FreeBSD DOMu on XenServer

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Sat Feb 11 09:11:49 UTC 2017


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212681

--- Comment #46 from Roger Pau Monné <royger at freebsd.org> ---
(In reply to rainer from comment #44)
This panic trace is very disturbing, I'm a little bit confused. Which kind of
guest are you running?

The trace shows xen_start -> hammer_time_xen and this path should _never_ be
used by a HVM guest, this is only used by PVH guests. Can you install addr2line
from ports (it's in binutils) and run the following inside of the VM:

# /usr/local/bin/addr2line -e /usr/lib/debug/boot/kernel/kernel.debug
0xffffffff81109cbb

Is also any change that you could get the full boot output from the VM by
connecting to it's serial console (and setting up the console inside of the
guest). See https://www.freebsd.org/doc/handbook/serialconsole-setup.html

Thanks.

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