[
{ type: install
  message: <<EOM
VirtualBox was installed.

You need to load the vboxdrv kernel module via /boot/loader.conf:

vboxdrv_load="YES"

You also have to add all users to your vboxusers group in order to use vbox.

% pw groupmod vboxusers -m jerry

Reboot the machine to load the needed kernel modules.


Bridging Support:
=================

For bridged networking please add the following line to your /etc/rc.conf:

vboxnet_enable="YES"


USB Support:
============

For USB support your user needs to be in the operator group and needs read
and write permissions to the USB device.

% pw groupmod operator -m jerry

Add the following to /etc/devfs.rules (create if it doesn't exist):

[system=10]
add path 'usb/*' mode 0660 group operator

To load these new rule add the following to /etc/rc.conf:

devfs_system_ruleset="system"

Then restart devfs to load the new rules:

% /etc/rc.d/devfs restart


Troubleshooting:
================

Running VirtualBox as non-root user may fail with a fatal error
NS_ERROR_FACTORY_NOT_REGISTERED. In this case delete /tmp/.vbox-*-ipc file.

If you experience "Network: write Failed: Cannot allocate memory" errors
try to increase net.graph.maxdata in /boot/loader.conf

If you are using AIO, then increase these limits (https://bugs.freebsd.org/168298):
vfs.aio.max_buf_aio=8192
vfs.aio.max_aio_queue_per_proc=65536
vfs.aio.max_aio_per_proc=8192
vfs.aio.max_aio_queue=65536
To check if AIO is used use: kldstat -v | grep aio

If you are experiencing VMs freezes with an error in VBox.log such as:
"
00:01:29.590192 AssertLogRel /usr/ports/emulators/virtualbox-ose-legacy/work/VirtualBox-5.2.44
/src/VBox/VMM/VMMR3/PGMPhys.cpp(5148) int PGMR3PhysAllocateHandyPages(PVM): RT_SUCCESS(rc)
00:01:29.590221 87/128: idPage=0x3d400 HCPhysGCPhys=000000027eaed000 rc=VERR_NO_MEMORY
00:01:29.590247 Changing the VM state from 'RUNNING' to 'GURU_MEDITATION'
00:01:29.590261 Console: Machine state changed to 'GuruMeditation'
00:01:29.590695 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
00:01:29.590696 !!
00:01:29.590697 !!         VCPU0: Guru Meditation -8 (VERR_NO_MEMORY)
"
and see a lot of free RAM, then increase sysctl vm.max_user_wired
(https://bugs.freebsd.org/252227).
For dedicated VM servers, a good start is:
("RAM in GB" - max(1, "RAM in GB" / 32)) * 1024*1024*1024 / PAGE_SIZE
PAGE_SIZE on x86 is 4096.
Examples with different RAM sizes in GB:
 16: ( 16-max(1, 16/32)*1024*1024*1024/4096 = 3932160  =>  15GB
 32: ( 32-max(1, 32/32)*1024*1024*1024/4096 = 8126464  =>  31GB
 48: ( 48-max(1, 48/32)*1024*1024*1024/4096 = 12189696 =>  46.5GB
 64: ( 64-max(1, 64/32)*1024*1024*1024/4096 = 16252928 =>  62GB
128: (128-max(1,128/32)*1024*1024*1024/4096 = 32505856 => 124GB
256: (256-max(1,256/32)*1024*1024*1024/4096 = 65011712 => 248GB

Check the wiki page for known issues and troubleshooting:
https://wiki.freebsd.org/VirtualBox

Please report any problems to emulation@. Thanks!
EOM
}
]