VMs

VM Spin-up, Capture, Encode, and Stream

vm_spinUp

virConnectPtr virConnectOpen(const char* name);

• name
  • Specifies the URI (Uniform Resource Identifier) of the hypervisor to connect to.
  • qemu:///system
  • Connects to system wide instance of the QEMU/KVM Hypervisor
• Returns
  • pointer to a virConnectPtr structure representing connection to hypervisor
  • If fail, returns NULL

XML

• Dynamic allocation of RAM, vcpus, diskPath, etc.

virDomainPtr virDomainDefineXML(virConnectPtr conn, const char* xml);

• conn
  • pointer to a connection object (virConnectPtr) that represents a connection to the hypervisor.
• xml
  • a string containing the XML configuration of the virtual machine. Specifies all VM properties.
• Returns
  • point to virDomainPtr object that represents the defined VM

int virDomainCreate(virDomainPtr domain);

• domain
  • a pointer to an object representing the VM
    • where the object is
• Returns
  • 0 if the VM is successfully started
  • -1 if function fails

Useful Terminal Commands

virsh dominfo *vmName*

virsh list -all

virsh undefine dynamic-vm