def _try_provision_device(self, image_path, fstype, disk_uuid):
with self._ndb_mount(image_path) as device:
logging.debug(
f"Going to create fs {fstype} id {disk_uuid} on device {device}"
)
cmd = filesystem.Mkfs.command(device, fstype, disk_uuid=disk_uuid)
shell.run_cmd(cmd)
def generate_iso(self, vm):
iso_path = self._iso_path(vm)
logging.debug(
f"Generating iso for vm {vm.name} iso: {vm.cloud_init_iso}")
with tempfile.TemporaryDirectory() as tmpdir:
user_data = os.path.join(tmpdir, "user-data")
meta_data = os.path.join(tmpdir, "meta-data")
self._write_metadata(vm, meta_data)
self._write_userdata(vm, user_data)
cmd = f"mkisofs -o {iso_path} -V cidata -J -r {user_data} {meta_data}"
shell.run_cmd(cmd)
return iso_path
def initialize(self):
logging.info("Loading nbd driver required to mount qcow disks")
shell.run_cmd("modprobe nbd max_part=8")
self._free_nbd_devices()
def _connect_device(self, device_path, image_path):
connect_cmd = ["qemu-nbd", "--connect", device_path, image_path]
shell.run_cmd(connect_cmd)
def _disconnect_device(self, device_path):
disconnect_cmd = ["qemu-nbd", "--disconnect", device_path]
shell.run_cmd(disconnect_cmd)
def _check_kvm_ok():
try:
shell.run_cmd("kvm-ok")
except:
logging.error("KVM cannot run in accelerated mode are KVM modules exist?")
raise
def _verify_gpu_drivers_not_loaded():
nvidia_modules = shell.run_cmd("lsmod | grep nvidia")
nouveau_modules = shell.run_cmd("lsmod | grep nouveau")
if nvidia_modules or nouveau_modules:
raise("Graphical kernel modules loaded nvidia: %s nouveau:\
%s hypervisors cannot work with loaded modules", nvidia_modules, nouveau_modules)