github.com/vmware/govmomi@v0.51.0/cli/vm/rdm/attach.go (about)

     1  // © Broadcom. All Rights Reserved.
     2  // The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
     3  // SPDX-License-Identifier: Apache-2.0
     4  
     5  package rdm
     6  
     7  import (
     8  	"context"
     9  	"flag"
    10  	"fmt"
    11  	"strings"
    12  
    13  	"github.com/vmware/govmomi/cli"
    14  	"github.com/vmware/govmomi/cli/flags"
    15  	"github.com/vmware/govmomi/vim25/types"
    16  )
    17  
    18  type attach struct {
    19  	*flags.VirtualMachineFlag
    20  
    21  	device string
    22  }
    23  
    24  func init() {
    25  	cli.Register("vm.rdm.attach", &attach{})
    26  }
    27  
    28  func (cmd *attach) Register(ctx context.Context, f *flag.FlagSet) {
    29  
    30  	cmd.VirtualMachineFlag, ctx = flags.NewVirtualMachineFlag(ctx)
    31  	cmd.VirtualMachineFlag.Register(ctx, f)
    32  
    33  	f.StringVar(&cmd.device, "device", "", "Device Name")
    34  }
    35  
    36  func (cmd *attach) Description() string {
    37  	return `Attach DEVICE to VM with RDM.
    38  
    39  Examples:
    40    govc vm.rdm.attach -vm VM -device /vmfs/devices/disks/naa.000000000000000000000000000000000`
    41  }
    42  
    43  func (cmd *attach) Process(ctx context.Context) error {
    44  	if err := cmd.VirtualMachineFlag.Process(ctx); err != nil {
    45  		return err
    46  	}
    47  	return nil
    48  }
    49  
    50  // This piece of code was developed mainly thanks to the project govmax on github.com
    51  // This file in particular https://github.com/codedellemc/govmax/blob/master/api/v1/vmomi.go
    52  func (cmd *attach) Run(ctx context.Context, f *flag.FlagSet) error {
    53  	vm, err := cmd.VirtualMachine()
    54  	if err != nil {
    55  		return err
    56  	}
    57  
    58  	if vm == nil {
    59  		return flag.ErrHelp
    60  	}
    61  
    62  	devices, err := vm.Device(ctx)
    63  	if err != nil {
    64  		return err
    65  	}
    66  
    67  	controller, err := devices.FindSCSIController("")
    68  	if err != nil {
    69  		return err
    70  	}
    71  
    72  	vmConfigOptions, err := queryConfigTarget(ctx, vm)
    73  	if err != nil {
    74  		return err
    75  	}
    76  
    77  	for _, scsiDisk := range vmConfigOptions.ScsiDisk {
    78  		if !strings.Contains(scsiDisk.Disk.CanonicalName, cmd.device) {
    79  			continue
    80  		}
    81  		var backing types.VirtualDiskRawDiskMappingVer1BackingInfo
    82  		backing.CompatibilityMode = string(types.VirtualDiskCompatibilityModePhysicalMode)
    83  		backing.DeviceName = scsiDisk.Disk.DeviceName
    84  		for _, descriptor := range scsiDisk.Disk.Descriptor {
    85  			if strings.HasPrefix(descriptor.Id, "vml.") {
    86  				backing.LunUuid = descriptor.Id
    87  				break
    88  			}
    89  		}
    90  		var device types.VirtualDisk
    91  		device.Backing = &backing
    92  		device.ControllerKey = controller.VirtualController.Key
    93  
    94  		var unitNumber *int32
    95  		scsiCtrlUnitNumber := controller.VirtualController.UnitNumber
    96  		var u int32
    97  		for u = 0; u < 16; u++ {
    98  			free := true
    99  			for _, d := range devices {
   100  				if d.GetVirtualDevice().ControllerKey == device.GetVirtualDevice().ControllerKey {
   101  					if u == *(d.GetVirtualDevice().UnitNumber) || u == *scsiCtrlUnitNumber {
   102  						free = false
   103  					}
   104  				}
   105  			}
   106  			if free && u != 7 {
   107  				unitNumber = &u
   108  				break
   109  			}
   110  		}
   111  		device.UnitNumber = unitNumber
   112  
   113  		spec := types.VirtualMachineConfigSpec{}
   114  
   115  		config := &types.VirtualDeviceConfigSpec{
   116  			Device:    &device,
   117  			Operation: types.VirtualDeviceConfigSpecOperationAdd,
   118  		}
   119  
   120  		config.FileOperation = types.VirtualDeviceConfigSpecFileOperationCreate
   121  
   122  		spec.DeviceChange = append(spec.DeviceChange, config)
   123  
   124  		task, err := vm.Reconfigure(ctx, spec)
   125  		if err != nil {
   126  			return err
   127  		}
   128  
   129  		err = task.Wait(ctx)
   130  		if err != nil {
   131  			return fmt.Errorf("error adding device %+v \n with backing %+v \nLogged Item:  %s", device, backing, err)
   132  		}
   133  		return nil
   134  
   135  	}
   136  	return fmt.Errorf("error: No LUN with device name containing %s found", cmd.device)
   137  }