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Manual Pages  — BHYVELOAD


bhyveload – load a FreeBSD guest inside a bhyve virtual machine



bhyveload [-C] [-S] [-c cons-dev] [-d disk-path] [-e name=value] [-h host-path] [-l os-loader] [-m memsize[K|k|M|m|G|g|T|t]] vmname


bhyveload is used to load a FreeBSD guest inside a bhyve(4) virtual machine.

bhyveload is based on loader(8) and will present an interface identical to the FreeBSD loader on the user's terminal. This behavior can be changed by specifying a different OS loader.

The virtual machine is identified as vmname and will be created if it does not already exist.


The following options are available:
-c cons-dev
  cons-dev is a tty(4) device to use for bhyveload terminal I/O.

The text string "stdio" is also accepted and selects the use of unbuffered standard I/O. This is the default value.

-d disk-path
  The disk-path is the pathname of the guest's boot disk image.
-e name=value
  Set the FreeBSD loader environment variable name to value.

The option may be used more than once to set more than one environment variable.

-h host-path
  The host-path is the directory at the top of the guest's boot filesystem.
-l os-loader
  Specify a different OS loader. By default bhyveload will use /boot/userboot.so, which presents a standard FreeBSD loader.
-m memsize[K|k|M|m|G|g|T|t]
  memsize is the amount of memory allocated to the guest.

The memsize argument may be suffixed with one of K, M, G or T (either upper or lower case) to indicate a multiple of Kilobytes, Megabytes, Gigabytes or Terabytes respectively.

memsize defaults to 256M.

  Include guest memory in the core file when bhyveload dumps core. This is intended for debugging an OS loader as it allows inspection of the guest memory.
  Wire guest memory.


To create a virtual machine named freebsd-vm that boots off the ISO image /freebsd/release.iso and has 1GB memory allocated to it:

    bhyveload -m 1G -d /freebsd/release.iso freebsd-vm

To create a virtual machine named test-vm with 256MB of memory allocated, the guest root filesystem under the host directory /user/images/test and terminal I/O sent to the nmdm(4) device /dev/nmdm1B

    bhyveload -m 256MB -h /usr/images/test -c /dev/nmdm1B test-vm


bhyve(4), nmdm(4), vmm(4), bhyve(8), loader(8)


bhyveload first appeared in FreeBSD 10.0, and was developed at NetApp Inc.


bhyveload was developed by Neel Natu <Mt neel@FreeBSD.org> at NetApp Inc with a lot of help from Doug Rabson <Mt dfr@FreeBSD.org>.


bhyveload can only load FreeBSD as a guest.

BHYVELOAD (8) June 24, 2016

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