Good day!
We are using Ubuntu + KVM (via qemu and libvirt) and we've run into some difficulties.
Host OS:
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
Spec server:
Supermicro SYS-5017GR-TF
CPU 1*Xeon E5-2690v2
RAM 6*8GB ECC
SSD 2*1TB Samsung EVO860
GPU 2*GTX1070
Network HP523SFP 10G
PSU 1200W
VM guest:
vCPU 8 threads
RAM 16GB
GPU 1*GTX1070 (using vfio-pci)
netowrking - vepa with macvtap
When the guest is receiving 'virsh destroy $vmname' command, the host machine hangs with
"NMI Watchdog BUG: soft lockup - CPU # 2 stuck for 22s".
How we tried to fix this issue:
Update bios to latest version
Updating to previous distro version, using alternatives (centos, debian)
Replace hardware components (CPU, RAM, Network Card, HDD and SSD)
Change some BIOS settings:
Tried adjusting:
PERR# Generation
SERR# Generation
Above 4G Decoding
Cpu max performance
Disabling internal NIC
Removing excessive boot devices
Power technology: various parameters
enegry/performace bias: various parameters
Pcie port: gen2 and gen3.
Problems occur only when guests are going down and new ones are created.
Attached files (console screenshots)
https://drive.google.com/open?id=1AHCabWEy88A9pBK26D40LXFMWZMehejX
https://drive.google.com/open?id=17VvCPVSWOJjEm-7nF9mrGNmd7vYNtR9x
https://drive.google.com/open?id=1RBkBcCnTCRLGDwf59Lh8s0yeGvCiYhw7
Regards, Alex.
