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title: Performs a few checks on Phyllome OS
description:
published: true
date: 2021-11-13T11:39:13.790Z
date: 2021-11-27T11:19:25.159Z
tags:
editor: markdown
dateCreated: 2021-11-13T11:39:13.790Z
---
> Section under construction
{.is-warning}
# 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](https://gitlab.com/libvirt/libvirt/-/issues/94). 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}