Amazon EC2 Windows インスタンスの非 NVMe ディスクをボリュームにマッピングする

次の PowerShell スクリプトでは、各ディスクと対応するデバイス名およびボリュームを一覧表示できます。

Windows インスタンスに接続し、次のコマンドを実行して PowerShell スクリプトの実行を有効にします。

Set-ExecutionPolicy RemoteSigned

次のスクリプトをコピーし、Windows インスタンスに mapping.ps1 として保存します。

# List the disks
function Convert-SCSITargetIdToDeviceName {
  param([int]$SCSITargetId)
  If ($SCSITargetId -eq 0) {
    return "sda1"
  }
  $deviceName = "xvd"
  If ($SCSITargetId -gt 25) {
    $deviceName += [char](0x60 + [int]($SCSITargetId / 26))
  }
  $deviceName += [char](0x61 + $SCSITargetId % 26)
  return $deviceName
}

[string[]]$array1 = @()
[string[]]$array2 = @()
[string[]]$array3 = @()
[string[]]$array4 = @()

Get-WmiObject Win32_Volume | Select-Object Name, DeviceID | ForEach-Object {
  $array1 += $_.Name
  $array2 += $_.DeviceID
}

$i = 0
While ($i -ne ($array2.Count)) {
  $array3 += ((Get-Volume -Path $array2[$i] | Get-Partition | Get-Disk).SerialNumber) -replace "_[^ ]*$" -replace "vol", "vol-"
  $array4 += ((Get-Volume -Path $array2[$i] | Get-Partition | Get-Disk).FriendlyName)
  $i ++
}

[array[]]$array = $array1, $array2, $array3, $array4

Try {
  $InstanceId = Get-EC2InstanceMetadata -Category "InstanceId"
  $Region = Get-EC2InstanceMetadata -Category "Region" | Select-Object -ExpandProperty SystemName
}
Catch {
  Write-Host "Could not access the instance Metadata using AWS Get-EC2InstanceMetadata CMDLet.
Verify you have AWSPowershell SDK version '3.1.73.0' or greater installed and Metadata is enabled for this instance." -ForegroundColor Yellow
}
Try {
  $BlockDeviceMappings = (Get-EC2Instance -Region $Region -Instance $InstanceId).Instances.BlockDeviceMappings
  $VirtualDeviceMap = (Get-EC2InstanceMetadata -Category "BlockDeviceMapping").GetEnumerator() | Where-Object { $_.Key -ne "ami" }
}
Catch {
  Write-Host "Could not access the AWS API, therefore, VolumeId is not available.
Verify that you provided your access keys or assigned an IAM role with adequate permissions." -ForegroundColor Yellow
}

Get-disk | ForEach-Object {
  $DriveLetter = $null
  $VolumeName = $null
  $VirtualDevice = $null
  $DeviceName = $_.FriendlyName

  $DiskDrive = $_
  $Disk = $_.Number
  $Partitions = $_.NumberOfPartitions
  $EbsVolumeID = $_.SerialNumber -replace "_[^ ]*$" -replace "vol", "vol-"
  if ($Partitions -ge 1) {
    $PartitionsData = Get-Partition -DiskId $_.Path
    $DriveLetter = $PartitionsData.DriveLetter | Where-object { $_ -notin @("", $null) }
    $VolumeName = (Get-PSDrive | Where-Object { $_.Name -in @($DriveLetter) }).Description | Where-object { $_ -notin @("", $null) }
  }
  If ($DiskDrive.path -like "*PROD_PVDISK*") {
    $BlockDeviceName = Convert-SCSITargetIdToDeviceName((Get-WmiObject -Class Win32_Diskdrive | Where-Object { $_.DeviceID -eq ("\\.\PHYSICALDRIVE" + $DiskDrive.Number) }).SCSITargetId)
    $BlockDeviceName = "/dev/" + $BlockDeviceName
    $BlockDevice = $BlockDeviceMappings | Where-Object { $BlockDeviceName -like "*" + $_.DeviceName + "*" }
    $EbsVolumeID = $BlockDevice.Ebs.VolumeId
    $VirtualDevice = ($VirtualDeviceMap.GetEnumerator() | Where-Object { $_.Value -eq $BlockDeviceName }).Key | Select-Object -First 1
  }
  ElseIf ($DiskDrive.path -like "*PROD_AMAZON_EC2_NVME*") {
    $BlockDeviceName = (Get-EC2InstanceMetadata -Category "BlockDeviceMapping")."ephemeral$((Get-WmiObject -Class Win32_Diskdrive | Where-Object { $_.DeviceID -eq ("\\.\PHYSICALDRIVE" + $DiskDrive.Number) }).SCSIPort - 2)"
    $BlockDevice = $null
    $VirtualDevice = ($VirtualDeviceMap.GetEnumerator() | Where-Object { $_.Value -eq $BlockDeviceName }).Key | Select-Object -First 1
  }
  ElseIf ($DiskDrive.path -like "*PROD_AMAZON*") {
    if ($DriveLetter -match '[^a-zA-Z0-9]') {
      $i = 0
      While ($i -ne ($array3.Count)) {
        if ($array[2][$i] -eq $EbsVolumeID) {
          $DriveLetter = $array[0][$i]
          $DeviceName = $array[3][$i]
        }
        $i ++
      }
    }
    $BlockDevice = ""
    $BlockDeviceName = ($BlockDeviceMappings | Where-Object { $_.ebs.VolumeId -eq $EbsVolumeID }).DeviceName
  }
  ElseIf ($DiskDrive.path -like "*NETAPP*") {
    if ($DriveLetter -match '[^a-zA-Z0-9]') {
      $i = 0
      While ($i -ne ($array3.Count)) {
        if ($array[2][$i] -eq $EbsVolumeID) {
          $DriveLetter = $array[0][$i]
          $DeviceName = $array[3][$i]
        }
        $i ++
      }
    }
    $EbsVolumeID = "FSxN Volume"
    $BlockDevice = ""
    $BlockDeviceName = ($BlockDeviceMappings | Where-Object { $_.ebs.VolumeId -eq $EbsVolumeID }).DeviceName
  }
  Else {
    $BlockDeviceName = $null
    $BlockDevice = $null
  }
  New-Object PSObject -Property @{
    Disk          = $Disk;
    Partitions    = $Partitions;
    DriveLetter   = If ($DriveLetter -eq $null) { "N/A" } Else { $DriveLetter };
    EbsVolumeId   = If ($EbsVolumeID -eq $null) { "N/A" } Else { $EbsVolumeID };
    Device        = If ($BlockDeviceName -eq $null) { "N/A" } Else { $BlockDeviceName };
    VirtualDevice = If ($VirtualDevice -eq $null) { "N/A" } Else { $VirtualDevice };
    VolumeName    = If ($VolumeName -eq $null) { "N/A" } Else { $VolumeName };
    DeviceName    = If ($DeviceName -eq $null) { "N/A" } Else { $DeviceName };
  }
} | Sort-Object Disk | Format-Table -AutoSize -Property Disk, Partitions, DriveLetter, EbsVolumeId, Device, VirtualDevice, DeviceName, VolumeName

スクリプトを次のように実行します。

PS C:\> .\mapping.ps1

出力例を次に示します。

Disk  Partitions  DriveLetter   EbsVolumeId             Device      VirtualDevice   DeviceName              VolumeName
----  ----------  -----------   -----------             ------      -------------   ----------              ----------
   0           1            C   vol-0561f1783298efedd   /dev/sda1   N/A             NVMe Amazon Elastic B   N/A
   1           1            D   vol-002a9488504c5e35a   xvdb        N/A             NVMe Amazon Elastic B   N/A
   2           1            E   vol-0de9d46fcc907925d   xvdc        N/A             NVMe Amazon Elastic B   N/A

Windows インスタンスで認証情報を指定しなかった場合、スクリプトは EBS ボリューム ID を取得できず、EbsVolumeId 列で N/A を使用します。