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/*
Copyright (c) 2017 VMware, Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package rdm
import (
"context"
"flag"
"fmt"
"strings"
"github.com/vmware/govmomi/govc/cli"
"github.com/vmware/govmomi/govc/flags"
"github.com/vmware/govmomi/vim25/types"
)
type attach struct {
*flags.VirtualMachineFlag
device string
}
func init() {
cli.Register("vm.rdm.attach", &attach{})
}
func (cmd *attach) Register(ctx context.Context, f *flag.FlagSet) {
cmd.VirtualMachineFlag, ctx = flags.NewVirtualMachineFlag(ctx)
cmd.VirtualMachineFlag.Register(ctx, f)
f.StringVar(&cmd.device, "device", "", "Device Name")
}
func (cmd *attach) Description() string {
return `Attach DEVICE to VM with RDM.
Examples:
govc vm.rdm.attach -vm VM -device /vmfs/devices/disks/naa.000000000000000000000000000000000`
}
func (cmd *attach) Process(ctx context.Context) error {
if err := cmd.VirtualMachineFlag.Process(ctx); err != nil {
return err
}
return nil
}
//This piece of code was developed mainly thanks to the project govmax on github.com
//This file in particular https://github.com/codedellemc/govmax/blob/master/api/v1/vmomi.go
func (cmd *attach) Run(ctx context.Context, f *flag.FlagSet) error {
vm, err := cmd.VirtualMachine()
if err != nil {
return err
}
if vm == nil {
return flag.ErrHelp
}
devices, err := vm.Device(ctx)
if err != nil {
return err
}
controller, err := devices.FindSCSIController("")
if err != nil {
return err
}
vmConfigOptions, err := vm.QueryConfigTarget(ctx)
if err != nil {
return err
}
for _, scsiDisk := range vmConfigOptions.ScsiDisk {
if !strings.Contains(scsiDisk.Disk.CanonicalName, cmd.device) {
continue
}
var backing types.VirtualDiskRawDiskMappingVer1BackingInfo
backing.CompatibilityMode = string(types.VirtualDiskCompatibilityModePhysicalMode)
backing.DeviceName = scsiDisk.Disk.DeviceName
for _, descriptor := range scsiDisk.Disk.Descriptor {
if strings.HasPrefix(descriptor.Id, "vml.") {
backing.LunUuid = descriptor.Id
break
}
}
var device types.VirtualDisk
device.Backing = &backing
device.ControllerKey = controller.VirtualController.Key
var unitNumber *int32
scsiCtrlUnitNumber := controller.VirtualController.UnitNumber
var u int32
for u = 0; u < 16; u++ {
free := true
for _, d := range devices {
if d.GetVirtualDevice().ControllerKey == device.GetVirtualDevice().ControllerKey {
if u == *(d.GetVirtualDevice().UnitNumber) || u == *scsiCtrlUnitNumber {
free = false
}
}
}
if free {
unitNumber = &u
break
}
}
device.UnitNumber = unitNumber
spec := types.VirtualMachineConfigSpec{}
config := &types.VirtualDeviceConfigSpec{
Device: &device,
Operation: types.VirtualDeviceConfigSpecOperationAdd,
}
config.FileOperation = types.VirtualDeviceConfigSpecFileOperationCreate
spec.DeviceChange = append(spec.DeviceChange, config)
task, err := vm.Reconfigure(ctx, spec)
if err != nil {
return err
}
err = task.Wait(ctx)
if err != nil {
return fmt.Errorf("error adding device %+v \n with backing %+v \nLogged Item: %s", device, backing, err)
}
return nil
}
return fmt.Errorf("error: No LUN with device name containing %s found", cmd.device)
}
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