Developer's Notes

Running updates about TrueNAS SCALE Nightly status and current issues.

Recent Updates

7/16/2020 - Slack Instance is available for community contributors

7/15/2020 - VM support using KVM as the backend has arrived, including support for PCI passthrough and nested virtualization.

System Requirements

  • Any x86_64 compatible (Intel or AMD) processor
  • 8GB of RAM (More is better)
  • 20GB Boot Device

Nightly Status

Nightly images for TrueNAS SCALE are built every 24 hours, at around 2AM Eastern (EDT/EST) time. Online updates are created every 2 hours and can be used via the UI’s online updating page.

ISO’s can be downloaded here:

Current Feature Status

The nightly images are very much a WIP until we get farther along in our development process. They should be suitable for very adventerous users and developers who are not afraid to use the command-line in some instances.

Supported via the UI:

  • Pool creation
  • Pool Management
  • Samba Shares
  • iSCSI Shares
  • AFP Shares
  • NFS Shares
  • AD / LDAP Directory Services
  • Online / Offline updating
  • Virtual Machines

Supported via the CLI (Currently)

  • Docker
  • Docker with NVIDIA –gpu passthrough flags
  • Gluster
  • Wireguard


  • Posix NFSv4 ACLs
  • Docker UI
  • Clustered Datasets API support for TrueCommand
  • TrueCommand Clustering UI for SCALE

Virtual Machines

PCI Passthrough Devices

In order to use PCI passthrough devices with VM’s, following steps should be followed so that the PCI devices shows up in UI when we want to create a PCI device to be attached to a VM.

  1. Identify the PCI device which should be used for passthrough with command virsh nodedev-list pci.
  2. Once PCI address has been identified, it should be made sure that the host OS is not using the device anywhere i.e pools etc. After ensuring this case, please execute virsh nodedev-detach pci_0000_26_00_0 where pci_0000_26_00_0 is the name of the PCI device.
  3. Step (2) will detach the PCI device from the host and it can be used with a VM guest by adding a PCI device in a VM via UI.

The above steps should be performed when there has been at least 1 VM created via UI. Please ensure that the device an be safely used with the guest as if it’s for example part of a CPU and we try to pass it through to the guest, that might result in a crash and the system will only recover after a reboot.

Last modified July 21, 2020: Update VM Dev notes (620b8952)