I'm having problems with my recently upgraded OpenBSD-6.5 virtual
machine hosted at Bytemark.
The VM freezes about once a week, requiring a hard reboot. During the
freezes, I can connect to bytemark's web-based VGA console thingy and
see the login prompt, but the system is not responsive to key-presses.
After a hard reboot, there's nothing in the logs to give clues, and
there are no kernel messages or ddb prmopt at the time of the freeze. I
appreciate that this is not a lot of info to go by :\
I spoke to reyk@ about this and he suggested it could be the new pvclock
driver, however the issue persists with this driver disabled.
The VM did not freeze prior to upgrading to OpenBSD-6.5 (i.e. it was
fine with 6.4).
As I recall, Bytemark qemu+kvm to host virtual machines.