wiki/gofurther/checks.md

title	description	published	date	tags	editor	dateCreated
Performs a few checks on Phyllome OS		true	2021-11-27T11:19:25.159Z		markdown	2021-11-13T11:39:13.790Z

Check your system

Before diving further, it is a good idea to check if everything has been set-up correctly.

Validate generic features on the host

Those commands are valid for each and every Phyllome OS editions {.is-info}

Perform a global check

The command-line tool virt-host-validate can let you quickly check if hardware virtualization is activated, among other features.

• Use the following command to check your system:

virt-host-validate

• Make sure the result look like this:

[groot@phyllome ~]$ virt-host-validate
  QEMU: Checking for hardware virtualization                                 : PASS
  QEMU: Checking if device /dev/kvm exists                                   : PASS
  QEMU: Checking if device /dev/kvm is accessible                            : PASS
  QEMU: Checking if device /dev/vhost-net exists                             : PASS
  QEMU: Checking if device /dev/net/tun exists                               : PASS
  QEMU: Checking for cgroup 'cpu' controller support                         : PASS
  QEMU: Checking for cgroup 'cpuacct' controller support                     : PASS
  QEMU: Checking for cgroup 'cpuset' controller support                      : PASS
  QEMU: Checking for cgroup 'memory' controller support                      : PASS
  QEMU: Checking for cgroup 'devices' controller support                     : WARN (Enable 'devices' in kernel Kconfig file or mount/enable cgroup controller in your system)
  QEMU: Checking for cgroup 'blkio' controller support                       : PASS
  QEMU: Checking for device assignment IOMMU support                         : PASS
  QEMU: Checking if IOMMU is enabled by kernel                               : PASS

The warning message for cgroup devices can be disregarded. This is a not an issue. This warning will not show up if the virt-host-validate command is executed as root or with a user with sudo privileges {.is-info}

Check for hardware virtualization

• Another more generic way to check whether hardware virtualization is activated or not is the following command:

cat /proc/cpuinfo | grep svm '(vmx|svm)'

• Look for svm for AMD-based processors, or vmx for Intel-based processors.

[groot@phyllome ~]$ cat /proc/cpuinfo | grep svm '(vmx|svm)'
flags		: fpu vme de  [...] svm [...] sme sev sev_es

Check if IOMMU groups have been created are present

Validate specific features on the host

Those commands are valid for only specific Phyllome OS editions {.is-info}