Difference between revisions of "FreeBSD Guest Notes"

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:'''Note:''' This has only been tested with FreeBSD 9.0-RELEASE (and patch levels).
 
:'''Note:''' This has only been tested with FreeBSD 9.0-RELEASE (and patch levels).
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==Create VM==
 +
Each virtualization environment is different. Tweak the components below as necessary.
 +
* Download the FreeBSD 9.0-amd64 DVD ISO (from [http://www.freebsd.org/where.html here]) and transfer it to your VM server.
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* Create a new VM:
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** CPU: dual-socket or dual-core
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** RAM: 2GB (minimum)
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** Network: Intel e1000 (bridged)
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** Create a 32GB primary disk (scsi, qcow2)
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** Create a 50GB secondary disk (scsi, qcow2)
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** Add FreeBSD 9.0-amd64 DVD ISO as an optical drive (scsi).
 
==Install FreeBSD==
 
==Install FreeBSD==
 
* Power on the VM.
 
* Power on the VM.

Revision as of 22:50, 6 October 2012

Tweaks and tips for better performance with FreeBSD on KVM.

Note: This has only been tested with FreeBSD 9.0-RELEASE (and patch levels).

Create VM

Each virtualization environment is different. Tweak the components below as necessary.

  • Download the FreeBSD 9.0-amd64 DVD ISO (from here) and transfer it to your VM server.
  • Create a new VM:
    • CPU: dual-socket or dual-core
    • RAM: 2GB (minimum)
    • Network: Intel e1000 (bridged)
    • Create a 32GB primary disk (scsi, qcow2)
    • Create a 50GB secondary disk (scsi, qcow2)
    • Add FreeBSD 9.0-amd64 DVD ISO as an optical drive (scsi).

Install FreeBSD

  • Power on the VM.
  • It should boot to the FreeBSD 9.0-amd64 DVD ISO.
  • System Components: Add "src".
  • Disks: Guided, use entire disk.
  • Network: Use ipv4 only (unless you also use ipv6).
  • Services: Add ntpd.
  • This should leave you with FreeBSD 9 installed on the 32GB primary drive.
  • Shut down the VM after installation.
  • Remove the ISO from the VM's optical drive (set to empty).
  • Verify the VM's boot order is set to the primary hard disk first.

First Boot

  • Power on the VM and log in.
  • Set the time:
ntpdate -s pool.ntp.org
  • Update the system:
freebsd-update fetch
freebsd-update install
  • Reboot

Enable Virtio

  • Install virtio-kmod:
cd /usr/ports/emulators/virtio-kmod && make clean install
  • When prompted on each required package, accept defaults and OK.
  • Copy the virtio modules into /boot/kernel directory:
cp -Rp /usr/local/modules/* /boot/kernel/
kldxref /boot/kernel
  • Add the following to /boot/loader.conf:
virtio_load="YES"
virtio_pci_load="YES"
virtio_blk_load="YES"
if_vtnet_load="YES"
virtio_balloon_load="YES"
  • Enable virtio for disk by changing your /etc/fstab entries to use the vtbd prefix. Example:
# Device        Mountpoint      FStype  Options Dump    Pass#
/dev/vtbd0p2    /               ufs     rw      1       1
/dev/vtbd0p3    none            swap    sw      0       0
  • Enable virtio for network by changing the ifconfig_em0="DHCP" line in /etc/rc.conf to:
ifconfig_vtnet0="DHCP"
  • Shutdown the VM
shutdown -p now
  • Change VM's network and disk hardware to use virtio.
  • Power on the VM.
  • Verify that virtio is loading:
kldstat

Id Refs Address            Size     Name
 1   12 0xffffffff80200000 11cdab0  kernel
 2    5 0xffffffff813ce000 4ca0     virtio.ko
 3    1 0xffffffff813d3000 5880     virtio_pci.ko
 4    1 0xffffffff813d9000 5010     virtio_blk.ko
 5    1 0xffffffff813df000 aeb0     if_vtnet.ko
 6    1 0xffffffff813ea000 3210     virtio_balloon.ko

External Links