func (d *Dispatcher) configIso(conf *metadata.VirtualContainerHostConfigSpec, vm *vm.VirtualMachine) (object.VirtualDeviceList, error) {
defer trace.End(trace.Begin(""))
var devices object.VirtualDeviceList
var err error
vmDevices, err := vm.Device(d.ctx)
if err != nil {
log.Errorf("Failed to get vm devices for appliance: %s", err)
return nil, err
}
ide, err := vmDevices.FindIDEController("")
if err != nil {
log.Errorf("Failed to find IDE controller for appliance: %s", err)
return nil, err
}
cdrom, err := devices.CreateCdrom(ide)
if err != nil {
log.Errorf("Failed to create Cdrom device for appliance: %s", err)
return nil, err
}
cdrom = devices.InsertIso(cdrom, fmt.Sprintf("[%s] %s/appliance.iso", conf.ImageStores[0].Host, d.vmPathName))
devices = append(devices, cdrom)
return devices, nil
}
func (d *Dispatcher) networkDevices(vmm *vm.VirtualMachine) ([]types.BaseVirtualDevice, error) {
defer trace.End(trace.Begin(""))
var err error
vmDevices, err := vmm.Device(d.ctx)
if err != nil {
log.Errorf("Failed to get vm devices for appliance: %s", err)
return nil, err
}
var devices []types.BaseVirtualDevice
for _, device := range vmDevices {
if _, ok := device.(types.BaseVirtualEthernetCard); ok {
devices = append(devices, device)
}
}
return devices, nil
}
// Find the disk by name attached to the given vm.
func findDisk(op trace.Operation, vm *vm.VirtualMachine, name string) (*types.VirtualDisk, error) {
defer trace.End(trace.Begin(vm.String()))
log.Debugf("Looking for attached disk matching filename %s", name)
devices, err := vm.Device(op)
if err != nil {
return nil, fmt.Errorf("Failed to refresh devices for vm: %s", errors.ErrorStack(err))
}
candidates := devices.Select(func(device types.BaseVirtualDevice) bool {
db := device.GetVirtualDevice().Backing
if db == nil {
return false
}
backing, ok := device.GetVirtualDevice().Backing.(*types.VirtualDiskFlatVer2BackingInfo)
if !ok {
return false
}
log.Debugf("backing file name %s", backing.VirtualDeviceFileBackingInfo.FileName)
match := strings.HasSuffix(backing.VirtualDeviceFileBackingInfo.FileName, name)
if match {
log.Debugf("Found candidate disk for %s at %s", name, backing.VirtualDeviceFileBackingInfo.FileName)
}
return match
})
if len(candidates) == 0 {
log.Warnf("No disks match name: %s", name)
return nil, os.ErrNotExist
}
if len(candidates) > 1 {
return nil, errors.Errorf("Too many disks match name: %s", name)
}
return candidates[0].(*types.VirtualDisk), nil
}
// ensures that a paravirtual scsi controller is present and determines the
// base path of disks attached to it returns a handle to the controller and a
// format string, with a single decimal for the disk unit number which will
// result in the /dev/disk/by-path path
func verifyParavirtualScsiController(op trace.Operation, vm *vm.VirtualMachine) (*types.ParaVirtualSCSIController, string, error) {
devices, err := vm.Device(op)
if err != nil {
log.Errorf("vmware driver failed to retrieve device list for VM %s: %s", vm, errors.ErrorStack(err))
return nil, "", errors.Trace(err)
}
controller, ok := devices.PickController((*types.ParaVirtualSCSIController)(nil)).(*types.ParaVirtualSCSIController)
if controller == nil || !ok {
err = errors.Errorf("vmware driver failed to find a paravirtual SCSI controller - ensure setup ran correctly")
log.Error(err.Error())
return nil, "", errors.Trace(err)
}
// build the base path
// first we determine which label we're looking for (requires VMW hardware version >=10)
targetLabel := fmt.Sprintf("SCSI%d", controller.BusNumber)
log.Debugf("Looking for scsi controller with label %s", targetLabel)
pciBase := "/sys/bus/pci/devices"
pciBus, err := os.Open(pciBase)
if err != nil {
log.Errorf("Failed to open %s for reading: %s", pciBase, errors.ErrorStack(err))
return controller, "", errors.Trace(err)
}
defer pciBus.Close()
pciDevices, err := pciBus.Readdirnames(0)
if err != nil {
log.Errorf("Failed to read contents of %s: %s", pciBase, errors.ErrorStack(err))
return controller, "", errors.Trace(err)
}
var buf = make([]byte, len(targetLabel))
var controllerName string
for _, n := range pciDevices {
nlabel := fmt.Sprintf("%s/%s/label", pciBase, n)
flabel, err := os.Open(nlabel)
if err != nil {
if !os.IsNotExist(err) {
log.Errorf("Unable to read label from %s: %s", nlabel, errors.ErrorStack(err))
}
continue
}
defer flabel.Close()
_, err = flabel.Read(buf)
if err != nil {
log.Errorf("Unable to read label from %s: %s", nlabel, errors.ErrorStack(err))
continue
}
if targetLabel == string(buf) {
// we've found our controller
controllerName = n
log.Debugf("Found pvscsi controller directory: %s", controllerName)
break
}
}
if controllerName == "" {
err := errors.Errorf("Failed to locate pvscsi controller directory")
log.Errorf(err.Error())
return controller, "", errors.Trace(err)
}
formatString := fmt.Sprintf("/dev/disk/by-path/pci-%s-scsi-0:0:%%d:0", controllerName)
log.Debugf("Disk location format: %s", formatString)
return controller, formatString, nil
}
