# Knowledge base

Disk locking
  Ensuring exclusive guest access to disks with virtlockd or Sanlock
Secure usage
  Secure usage of the libvirt APIs
Launch security
  Securely launching VMs with AMD SEV
Domain state capture
  Comparison between different methods of capturing domain state
RPM deployment
  Explanation of the different RPM packages and illustration of which to pick for installation
Backing chain management
  Explanation of how disk backing chain specification impacts libvirt's behaviour and basic troubleshooting steps of disk problems.
Security with QEMU passthrough
  Examination of the security protections used for QEMU and how they need configuring to allow use of QEMU passthrough with host files/devices.
Virtio-FS
  Share a filesystem between the guest and the host