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Man Pages
BVM(8) FreeBSD System Manager's Manual BVM(8)

bvm
Bhyve Virtual machines Management tool

bvm --help

bvm --version

bvm --create name

bvm --config name

bvm --vminfo name

bvm --os

bvm --ls [
byname|byos|bystatus
]

bvm --ll [
byname|byip|byos|bystatus
]

bvm --login name

bvm --start name

bvm --restart name

bvm --stop name

bvm --poweroff name

bvm --clone name new-name

bvm --remove name

bvm --rename name new-name

bvm --lock name

bvm --unlock name

bvm --lockall

bvm --unlockall

bvm --addisk name

bvm --deldisk name

bvm --abinfo

bvm --autoboot

bvm --reload-nat

bvm --setnat Nat ip/mask

bvm --setsw Switch ip/mask

bvm --unsetsw Switch

bvm --showdev

bvm --showdevuse

bvm --showdevall

bvm --snapshot name

bvm --rollback name

bvm --showsnap name

bvm --showsnapall

The bvm is a bhyve(8) virtual machine management tool based on FreeBSD that allows you to easily manage virtual machines.
The virtual machine's network is handled by one or more virtual switches. Each switch has a simple name, which is stored in the corresponding configuration file and can be modified by the bvm create one or more bridge(4) devices for each virtual switch and dynamically assign them to the virtual machine tap(4) interface. When the virtual machine is shut down normally, the bvm will automatically clean up the useless network devices.
The bvm supports multiple network cards and multiple hard disks. Each virtual machine can have multiple network cards or multiple hard disks, and can easily add, delete, and modify network cards or hard disks.

Once bvm is installed, the first thing you have to do is set up the virtual machine's storage directory.
Edit the value of vmdir in /usr/local/etc/bvm/bvm.conf
vmdir=/your/vm/dir/
If you want to automatically boot the specified list of virtual machines in order while the host is booting, add the following lines to /etc/rc.conf to enable:
bvmd_enable="YES"

Show information for all auto-bootstrap virtual machines.
name
Add a hard disk to the virtual machine.
Start the automatic booting virtual machine in order. Boot option, which is usually not required in administrator manual maintenance mode. Sometimes the host is powered on again after shutdown or unexpected downtime. At this time, the administrator-set virtual machine can be automatically started by the rc script. The method is to use bvm --config to modify the default value of the auto boot menu to yes.
In self-start mode, bvm will refer to the boot level and delay options of vm. The boot level is the boot priority. When there are multiple self-starting virtual machines, the lower the startup priority, the more the virtual machine starts. Back to front. Boot time (boot time) After starting the current virtual machine, it can also be said that the number of seconds is tentative before starting the next virtual machine. The reason for designing these two parameters is because some services may need to be activated first to ensure normal business.
For example, the relationship between the database and the web service, if the data virtual machine library is not prioritized, it may cause the web service to be abnormal!
The correct way to use this option is to add the startup script:
# syrc bvmd_enable=yes
    
name new-name
Clone a new virtual machine from an existing virtual machine.
name
Edit the configuration of the virtual machine. This option needs to be used in the case of a virtual machine. Options that allow users to configure independently are: cpus, ram, iso path, boot from, hostbridge, uefi, auto boot, disk config, and network config.
cpus
The number of CPUs (non-cores) used by the current virtual machine.
ram
The size of the memory requested by the current virtual machine, the unit of which can be M/G, etc.
iso path
The directory where the iso disc image is located (is the directory, non-iso absolute address). When the directory is specified, bvm will automatically list the iso files contained in the current directory. The user can select the menu number.
boot from
This is an important option. When the system is first installed, bvm will automatically adjust this option to hd0 for system startup. When you need to use iso disc for system maintenance, you can change this option to cd0.
uefi
This option is mostly used by the operating system that installs the graphical interface. It needs to be used with VNC to get the desktop. In addition, this option will invalidate the --login option because --login is a text console and does not have graphical interface operating conditions.
auto boot
See --autoboot for details.
hostbridge
This is a schema attribute whose attribute value should be hostbridge when using the Intel system CPU; its attribute value should be amd_hostbridge when using the AMD series CPU.
disk config
The option can add or delete the hard disk of the current virtual machine. If you only want to add the hard disk, it is recommended to use bvm --addisk shortcut command.
network config
This option allows you to configure the networking or networking of virtual machines.
name
Create a new virtual machine.
name
Delete the disks in the virtual machine.
Show all options and descriptions.
name
Login to a running virtual machine from console, the boot loader of this virtual machine must be grub, and the uefi mode needs to log in using the VNC client.
[
byname|byos|bystatus
]
Show a list and status of all virtual machines. By default, the output is sorted in ascending order by name, or one of the following options is specified.
byname
Output list in ascending order by name.
byos
Output list in ascending order by OS.
bystatus
Output list in ascending order by virtual machine status.
# bvm --ls byos 
NAME        GUEST           CPU     MEMORY  DISK        STATE 
c           Debian          1       512M    [2]5.5G     off 
d           Debian          1       512M    [1]5G       off * 
abc         Debian          1       512M    [1]10G      on 
b           FreeBSD         1       1G      [1]10G      off 
bb          FreeBSD         1       1G      [1]10G      off 
 
# bvm --ls 
NAME        GUEST           CPU     MEMORY  DISK        STATE 
abc         Debian          1       512M    [1]10G      on 
b           FreeBSD         1       1G      [1]10G      off 
bb          FreeBSD         1       1G      [1]10G      off 
c           Debian          1       512M    [2]5.5G     off 
d           Debian          1       512M    [1]5G       off *
    
The meaning of the list items is as follows:
NAME
The name of the virtual machine.
GUEST
Virtual machine operating system.
CPU
Number of CPUs.
MEMORY
Size of memory.
DISK
Disk capacity, the number in square brackets represents the number of disks, and the capacity is the sum of all disk capacities.
STATE
The state of the virtual machine, off or on, if the virtual machine is locked, a symbol '*' is also displayed.
[
byname|byip|byos|bystatus
]
Show a list and status of all virtual machines in long format. By default, the output is sorted in ascending order by name, or one of the following options is specified.
byname
Output list in ascending order by name.
byip
Output list in ascending order by IP-addr.
byos
Output list in ascending order by OS.
bystatus
Output list in ascending order by virtual machine status.
The added list items have the following meanings:
IP
The IP address of the virtual machine.
LOADER
The boot loader for the virtual machine.
AUTOSTART
The state in which the virtual machine is automatically started, "Yes" is automatically started, and the number next to it is the startup sequence.
name
Locks the specified virtual machine, and can't --config , --remove , --start , and so on. Only simple read operations can be performed, such as --vminfo , --ls , this option also prevents the risk of virtual machine files being accidentally deleted.
Lock all virtual machines, behaving the same as --lock.
Show a list of operating systems supported by bvm.
name
Force the virtual machine to power off. When there are some special reasons that prevent the virtual machine from shutting down properly, you need to use this option to force the virtual machine to power off.
Reload the NAT port redirect. In general, you do not need to use this option, bvm will automatically handle port redirection, this option is manual mode.
name
Destroy a virtual machine and it cannot be recovered. Note that the virtual machine cannot be running when you run this command.
name new-name
Rename the virtual machine.
name
Restart a virtual machine.
name
Roll back to the snapshot point.
nat ip/mask
Set the IP address and mask of the NAT.
# bvm --setnat nat0 172.16.1.1/24
    
switch ip/mask
Set the ip address and mask of the virtual switch. The same method as --setnat.
Select a network device and show its relationship to the virtual machine NIC.
Show a relationship table for all network devices.
Show a relational table of all network devices in use.
name
Show snapshots list of the virtual machine.
Show snapshots list of the all virtual machines.
name
Generating snapshots for the virtual machine.
name
Start a virtual machine.
name
Shut down a virtual machine.
name
Unlock a virtual machine.
Unlock all virtual machines.
switch
Delete the IP address of the virtual switch.
Show the version number of bvm installed.
name
Shows the configuration of the virtual machine.

/usr/local/etc/bvm/bvm.conf
This file records the virtual machine's directory and a list of all supported 
operating systems.
/usr/local/etc/bvm/nat.conf
This file records the configuration information for all NAT. 

nat0=172.16.1.1/24 nat1=10.10.30.1/24 nat2=192.168.1.1/24
/usr/local/etc/bvm/switch.conf
This file records the configuration information of all virtual switches. 
The default 0-2 sets the IP address, and 3-7 is not set. 

switch0=10.0.1.0/24 switch1=10.0.2.0/24 switch2=10.0.3.0/24 switch3= switch4= switch5= switch6= switch7=

tmux(1), bridge(4), tap(4), bhyve(8), bhyveload(8), zfs(8)

Please report all bugs/issues/feature requests to the GitHub project at https://github.com/bigdragonsoft/bvm

Qiang Guo <guoqiang_cn@126.com>
November 12, 2018 FreeBSD 12.0-RELEASE

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