# vt

* [IOMMU](#iommu)
  * [Hyper-V DDA](#hyper-v-dda)
* [UI](#ui)
  * [webvirtcloud](#webvirtcloud)
* [oVirt](#ovirt)
* [Compare](#compare)
* [OVMF Open Virtual Machine Firmware](#ovmf-open-virtual-machine-firmware)
* [Xen vs KVM](#xen-vs-kvm)
* [Xen](#xen)
* [VSphere / ESXi](#vsphere--esxi)
  * [Raw disk mapping RDM](#raw-disk-mapping-rdm)
  * [Config](#config)
    * [Backup](#backup)
    * [Restore](#restore)
  * [vmdk](#vmdk)
  * [Inject driver](#inject-driver)
* [Vagrant](#vagrant)
* [Intel vPro](#intel-vpro)
  * [Q35](#q35)
* [OSX on KVM](#osx-on-kvm)

## IOMMU

check [VDI](https://book.ferro.pro/vt/vdi) for GPU passthrough.

<https://www.kernel.org/doc/Documentation/Intel-IOMMU.txt\\>
<https://pve.proxmox.com/wiki/Pci\\_passthrough\\>
<https://wiki.archlinux.org/index.php/PCI\\_passthrough\\_via\\_OVMF\\>
<https://github.com/awilliam/rom-parser\\>
<https://github.com/systemdaemon/systemd/blob/master/src/linux/Documentation/vfio.txt>

```
intel_iommu=on kvm-intel.nested=1
```

### Hyper-V DDA

<https://github.com/fzinfz/scripts/tree/win/powershell/hyper-v>

## UI

<https://www.linux-kvm.org/page/Management\\_Tools> (Most outdated)

### webvirtcloud

<https://github.com/retspen/webvirtcloud>

## oVirt

<https://www.ovirt.org/download/\\>
Engine running as a Virtual Machine on that Host: RHEL/CentOS

## Compare

|  vendor  |    storage   |
| :------: | :----------: |
|    PVE   | LVM-thin/ZFS |
| libvirtd |     qcow2    |

## OVMF (Open Virtual Machine Firmware)

<http://www.linux-kvm.org/downloads/lersek/ovmf-whitepaper-c770f8c.txt\\>
a sub-project of Intel's EFI Development Kit II (edk2)

## Xen vs KVM

<http://drsalbertspijkers.blogspot.co.uk/2017/05/kvm-kernel-virtual-machine-or-xen.html\\>
![](https://4.bp.blogspot.com/-we18-TvbbgE/WSfqL65mC6I/AAAAAAAACeA/lcC-3Xn6vxcXVdQb1_BR7PklQu4doFWdQCLcB/s640/virtualization_xen_kvm.png)

## Xen

<https://www.xenproject.org/users/getting-started.html\\>
Xen Project and Performance

<https://wiki.xenproject.org/wiki/Compiling\\_Xen\\_From\\_Source>

```
apt-get build-dep xen   # `deb-src` required
make xenconfig # kernel 4.2+
```

<https://wiki.debian.org/Xen>

```
apt-get install xen-system
```

## VSphere / ESXi

### Raw disk mapping (RDM)

```
ls -alh /vmfs/devices/disks
vmkfstools -r /vmfs/devices/disks/<device> example.vmdk
vmkfstools -z /vmfs/devices/disks/<device> example.vmdk
```

[Ref](https://kb.vmware.com/selfservice/microsites/search.do?language=en_US\&cmd=displayKC\&externalId=1026256)

### Config

[Ref](https://kb.vmware.com/selfservice/microsites/search.do?language=en_US\&cmd=displayKC\&externalId=2042141)

#### Backup

`vim-cmd hostsvc/firmware/backup_config`

#### Restore

```
vim-cmd hostsvc/maintenance_mode_enter
vim-cmd hostsvc/firmware/restore_config /tmp/configBundle.tgz
```

### vmdk

```
vmkfstools -i "source.vmdk" -d thin "destination.vmdk"
```

The tool also reverts a vmdk which was blown up, back into a thin file! ([Ref](http://www.how2blog.de/?p=98))

### Inject driver

<http://www.v-front.de/2014/12/how-to-make-your-unsupported-nic-work.html\\>
<https://vibsdepot.v-front.de/wiki/index.php/List\\_of\\_currently\\_available\\_ESXi\\_packages\\>
<http://www.v-front.de/p/esxi-customizer-ps.html>

## Vagrant

<https://atlas.hashicorp.com/boxes/\\>
Get Direct link: <https://github.com/everyx/vagrant-box-download-helper-everyx.user.js>

```
sudo apt-get install vagrant 
sudo apt-get install libz-dev
vagrant plugin install vagrant-mutate
vagrant mutate http://files.vagrantup.com/precise32.box libvirt
vagrant plugin install vagrant-libvirt

vagrant plugin install vagrant-lxc

vagrant box add hashicorp/precise64 && tar *.box -C out_folder
```

## Intel vPro

<https://en.wikipedia.org/wiki/Intel\\_vPro\\>
Intel vPro technology is an umbrella marketing term used by Intel for a large collection of computer hardware technologies, including Hyperthreading, Turbo Boost 3.0, VT-x, VT-d, Trusted Execution Technology (TXT), and Intel Active Management Technology (AMT).\[1] When the vPro brand was launched (circa 2007), it was identified primarily with AMT,\[2]\[3] thus some journalists still consider AMT to be the essence of vPro.\[4]

### Q35

<https://www.linux-kvm.org/images/0/06/2012-forum-Q35.pdf>

```
Q35 has IOMMU
Q35 has PCIe Switches vs PCI Bridges (I440FX/PIIX4) 
```

<https://wiki.qemu.org/Features/Q35>

## OSX on KVM

<https://github.com/kholia/OSX-KVM>

<https://www.contrib.andrew.cmu.edu/\\~somlo/OSXKVM/>