GNet Solutions » FreeBSD Administration

This is a guide on how I compiled VIMAGE support into a custom FreeBSD 10.2 kernel.

Download the kernel sources¶

• Install subversion:
  

  pkg install subversion
  

• Download the FreeBSD 10.2 kernel sources
  

  svn checkout http://svn.freebsd.org/base/release/10.2.0/ /usr/src
  

Create a custom kernel config¶

• Change into the kernel source directory and create a new kernel
  

  cd /usr/src/sys/amd64/conf
  cp GENERIC NEWKERNEL
  

• Edit the new kernel config file:
  

  vi NEWKERNEL
  

  • And add the following:
    

    options         VIMAGE
    options         RACCT
    options         RCTL
    

Build and install the new kernel¶

• Change to the kernel source directory, then build and install the new kernel:
  

  cd /usr/src
  make buildkernel KERNCONF=NEWKERNEL
  make installkernel KERNCONF=NEWKERNEL
  

  
  NOTE: This process took about 2 hours on the VM I used.

Resources¶

• http://jsherz.com/freebsd/jails/kernel/vnet/2015/11/17/custom-kernel-jails-vnet.html
• http://wiki.polymorf.fr/index.php/Howto:FreeBSD_jail_vnet
• https://github.com/iocage/iocage/blob/master/README.md