abdelouahabb commented on issue #4781:
URL: https://github.com/apache/cloudstack/issues/4781#issuecomment-796412428
Confirmed, dont work in nested virtualization using virt-manager even if the
system allows it, reinstalled a new clean ubuntu-server 18.04.5 , same bug I
got with ubuntu 20.04, except I got the sql performances better than mysql 8
(which is used below with mariadb to mimic old mysql 5.7)
maybe kvm ambiguity like what happens in windows with virtualbox because of
hyper-v enabled ?
```
root@alien:~# kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
root@alien:~# lshw -class system
alien.akham.local
description: Computer
product: Standard PC (Q35 + ICH9, 2009)
vendor: QEMU
version: pc-q35-4.2
width: 64 bits
capabilities: smbios-2.8 dmi-2.8 smp vsyscall32
configuration: boot=normal uuid=422B1414-E11B-DB48-A5A8-71FABD518F5A
root@alien:~# dmesg | grep -i virtual
[ 0.000000] Booting paravirtualized kernel on KVM
[ 3.357054] systemd[1]: Detected virtualization kvm.
```
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