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