Hi Michael! On 1/13/22 01:17, John Paul Adrian Glaubitz wrote: > On 1/9/22 23:17, John Paul Adrian Glaubitz wrote: >> On 1/7/22 12:20, John Paul Adrian Glaubitz wrote: >>>> Can you separately test with (on the host): >>>> >>>> # echo 0 > /sys/module/kvm_hv/parameters/dynamic_mt_modes >>> >>> I'm trying to turn off "dynamic_mt_modes" first and see if that makes any >>> difference. >>> >>> I will report back. >> >> So far the machine is running stable now and the VM built gcc-9 without >> crashing the host. I will continue to monitor the machine and report back >> if it crashes, but it looks like this could be it. > > So, it seems that setting "dynamic_mt_modes" actually did the trick, the host > is no longer > crashing. However, I have observed on two occasions now that the build VM is > just suddenly > off as if someone has shut it down using the "force-off" option in the > virt-manager user > interface.
Just as a heads-up. Ever since I set echo 0 > /sys/module/kvm_hv/parameters/dynamic_mt_modes on the host machine, I never saw the crash again. So the issue seems to be related to the dynamic_mt_modes feature. Thanks, Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913