DSCResources/DSC_DiskAccessPath/DSC_DiskAccessPath.psm1
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$modulePath = Join-Path -Path (Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent) -ChildPath 'Modules' # Import the Storage Common Module. Import-Module -Name (Join-Path -Path $modulePath ` -ChildPath (Join-Path -Path 'StorageDsc.Common' ` -ChildPath 'StorageDsc.Common.psm1')) # Import Localization Strings. $script:localizedData = Get-LocalizedData -ResourceName 'DSC_DiskAccessPath' <# .SYNOPSIS Returns the current state of the Disk and Partition. .PARAMETER AccessPath Specifies the access path folder to the assign the disk volume to .PARAMETER NoDefaultDriveLetter Prevents a default drive letter from being assigned to a newly created partition. Defaults to True. .PARAMETER DiskId Specifies the disk identifier for the disk to modify. .PARAMETER DiskIdType Specifies the identifier type the DiskId contains. Defaults to Number. .PARAMETER Size Specifies the size of new volume (use all available space on disk if not provided). .PARAMETER FSLabel Specifies the volume label to assign to the volume. .PARAMETER AllocationUnitSize Specifies the allocation unit size to use when formatting the volume. .PARAMETER FSFormat Specifies the file system format of the new volume. #> function Get-TargetResource { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory = $true)] [System.String] $AccessPath, [Parameter()] [System.Boolean] $NoDefaultDriveLetter = $true, [Parameter(Mandatory = $true)] [System.String] $DiskId, [Parameter()] [ValidateSet('Number', 'UniqueId', 'Guid', 'Location')] [System.String] $DiskIdType = 'Number', [Parameter()] [System.UInt64] $Size, [Parameter()] [System.String] $FSLabel, [Parameter()] [System.UInt32] $AllocationUnitSize, [Parameter()] [ValidateSet('NTFS', 'ReFS')] [System.String] $FSFormat = 'NTFS' ) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.GettingDiskMessage -f $DiskIdType, $DiskId, $AccessPath) ) -join '' ) # Validate the AccessPath parameter adding a trailing slash $AccessPath = Assert-AccessPathValid -AccessPath $AccessPath -Slash # Get the Disk using the identifiers supplied $disk = Get-DiskByIdentifier ` -DiskId $DiskId ` -DiskIdType $DiskIdType # Get the partitions on the disk $partition = $disk | Get-Partition -ErrorAction SilentlyContinue # Check if the disk has an existing partition assigned to the access path $assignedPartition = $partition | Where-Object -Property AccessPaths -Contains -Value $AccessPath $volume = $assignedPartition | Get-Volume $fileSystem = $volume.FileSystem $FSLabel = $volume.FileSystemLabel # Prepare the AccessPath used in the CIM query (replaces '\' with '\\') $queryAccessPath = $AccessPath -replace '\\', '\\' $blockSize = (Get-CimInstance ` -Query "SELECT BlockSize from Win32_Volume WHERE Name = '$queryAccessPath'" ` -ErrorAction SilentlyContinue).BlockSize $returnValue = @{ DiskId = $DiskId DiskIdType = $DiskIdType AccessPath = $AccessPath NoDefaultDriveLetter = $assignedPartition.NoDefaultDriveLetter Size = $assignedPartition.Size FSLabel = $FSLabel AllocationUnitSize = $blockSize FSFormat = $fileSystem } return $returnValue } # Get-TargetResource <# .SYNOPSIS Initializes the Disk and Partition and assigns the access path. .PARAMETER AccessPath Specifies the access path folder to the assign the disk volume to .PARAMETER NoDefaultDriveLetter Prevents a default drive letter from being assigned to a newly created partition. Defaults to True. .PARAMETER DiskId Specifies the disk identifier for the disk to modify. .PARAMETER DiskIdType Specifies the identifier type the DiskId contains. Defaults to Number. .PARAMETER Size Specifies the size of new volume (use all available space on disk if not provided). .PARAMETER FSLabel Specifies the volume label to assign to the volume. .PARAMETER AllocationUnitSize Specifies the allocation unit size to use when formatting the volume. .PARAMETER FSFormat Specifies the file system format of the new volume. #> function Set-TargetResource { # Should process is called in a helper functions but not directly in Set-TargetResource [Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSShouldProcess', '')] [CmdletBinding(SupportsShouldProcess = $true)] param ( [Parameter(Mandatory = $true)] [System.String] $AccessPath, [Parameter()] [System.Boolean] $NoDefaultDriveLetter = $true, [Parameter(Mandatory = $true)] [System.String] $DiskId, [Parameter()] [ValidateSet('Number', 'UniqueId', 'Guid', 'Location')] [System.String] $DiskIdType = 'Number', [Parameter()] [System.UInt64] $Size, [Parameter()] [System.String] $FSLabel, [Parameter()] [System.UInt32] $AllocationUnitSize, [Parameter()] [ValidateSet('NTFS', 'ReFS')] [System.String] $FSFormat = 'NTFS' ) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.SettingDiskMessage -f $DiskIdType, $DiskId, $AccessPath) ) -join '' ) <# This call is required to force a refresh of the list of drives in the disk subsystem. If this refresh does not occur then the list of disks may not be up-to-date, resulting in an error occuring when the access path is mounted. The result of the test is not used and is discarded. #> $null = Test-AccessPathInPSDrive -AccessPath $AccessPath # Validate the AccessPath parameter adding a trailing slash $AccessPath = Assert-AccessPathValid -AccessPath $AccessPath -Slash # Get the Disk using the identifiers supplied $disk = Get-DiskByIdentifier ` -DiskId $DiskId ` -DiskIdType $DiskIdType if ($disk.IsOffline) { # Disk is offline, so bring it online Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.SetDiskOnlineMessage -f $DiskIdType, $DiskId) ) -join '' ) $disk | Set-Disk -IsOffline $false } # if if ($disk.IsReadOnly) { # Disk is read-only, so make it read/write Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.SetDiskReadWriteMessage -f $DiskIdType, $DiskId) ) -join '' ) $disk | Set-Disk -IsReadOnly $false } # if Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.CheckingDiskPartitionStyleMessage -f $DiskIdType, $DiskId) ) -join '' ) switch ($disk.PartitionStyle) { 'RAW' { # The disk partition table is not yet initialized, so initialize it with GPT Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.InitializingDiskMessage -f $DiskIdType, $DiskId) ) -join '' ) $disk | Initialize-Disk ` -PartitionStyle 'GPT' break } # 'RAW' 'GPT' { # The disk partition is already initialized with GPT. Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.DiskAlreadyInitializedMessage -f $DiskIdType, $DiskId) ) -join '' ) break } # 'GPT' default { # This disk is initialized but not as GPT - so raise an exception. New-InvalidOperationException ` -Message ($script:localizedData.DiskAlreadyInitializedError -f ` $DiskIdType, $DiskId, $Disk.PartitionStyle) } # default } # switch # Get the partitions on the disk $partition = $disk | Get-Partition -ErrorAction SilentlyContinue # Check if the disk has an existing partition assigned to the access path $assignedPartition = $partition | Where-Object -Property AccessPaths -Contains -Value $AccessPath if ($null -eq $assignedPartition) { # There is no partiton with this access path Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.AccessPathNotFoundOnPartitionMessage -f $DiskIdType, $DiskId, $AccessPath) ) -join '' ) # Are there any partitions defined on this disk? if ($partition) { # There are partitions defined - identify if one matches the size required if ($Size) { # Find the first basic partition matching the size $partition = $partition | Where-Object -Filter { $_.Type -eq 'Basic' -and $_.Size -eq $Size } | Select-Object -First 1 if ($partition) { # A partition matching the required size was found Write-Verbose -Message ($script:localizedData.MatchingPartitionFoundMessage -f ` $DiskIdType, $DiskId, $partition.PartitionNumber) } else { # A partition matching the required size was not found Write-Verbose -Message ($script:localizedData.MatchingPartitionNotFoundMessage -f ` $DiskIdType, $DiskId) } # if } else { <# No size specified, so see if there is a partition that has a volume matching the file system type that is not assigned to an access path. #> Write-Verbose -Message ($script:localizedData.MatchingPartitionNoSizeMessage -f ` $DiskIdType, $DiskId) $searchPartitions = $partition | Where-Object -FilterScript { $_.Type -eq 'Basic' -and -not (Test-AccessPathAssignedToLocal -AccessPath $_.AccessPaths) } $partition = $null foreach ($searchPartition in $searchPartitions) { # Look for the volume in the partition. Write-Verbose -Message ($script:localizedData.SearchForVolumeMessage -f ` $DiskIdType, $DiskId, $searchPartition.PartitionNumber, $FSFormat) $searchVolumes = $searchPartition | Get-Volume $volumeMatch = $searchVolumes | Where-Object -FilterScript { $_.FileSystem -eq $FSFormat } if ($volumeMatch) { <# Found a partition with a volume that matches file system type and not assigned an access path. #> $partition = $searchPartition Write-Verbose -Message ($script:localizedData.VolumeFoundMessage -f ` $DiskIdType, $DiskId, $searchPartition.PartitionNumber, $FSFormat) break } # if } # foreach } # if } # if # Do we need to create a new partition? if (-not $partition) { # Attempt to create a new partition $partitionParams = @{} if ($Size) { # Use only a specific size Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.CreatingPartitionMessage ` -f $DiskIdType, $DiskId, "$($Size/1KB) KB") ) -join '' ) $partitionParams['Size'] = $Size } else { # Use the entire disk Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.CreatingPartitionMessage ` -f $DiskIdType, $DiskId, 'all free space') ) -join '' ) $partitionParams['UseMaximumSize'] = $true } # if # Create the partition $partition = $disk | New-Partition @partitionParams <# After creating the partition it can take a few seconds for it to become writeable Wait for up to 30 seconds for the partition to become writeable #> $timeout = (Get-Date) + (New-Timespan -Second 30) while ($partition.IsReadOnly -and (Get-Date) -lt $timeout) { Write-Verbose -Message ($script:localizedData.NewPartitionIsReadOnlyMessage -f ` $DiskIdType, $DiskId, $partition.PartitionNumber) Start-Sleep -Seconds 1 # Pull the partition details again to check if it is readonly $partition = $partition | Get-Partition } # while } # if if ($partition.IsReadOnly) { # The partition is still readonly - throw an exception New-InvalidOperationException ` -Message ($script:localizedData.NewParitionIsReadOnlyError -f ` $DiskIdType, $DiskId, $partition.PartitionNumber) } # if $assignAccessPath = $true } else { # The disk already has a partition on it that is assigned to the access path Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.PartitionAlreadyAssignedMessage -f ` $AccessPath, $assignedPartition.PartitionNumber) ) -join '' ) $assignAccessPath = $false } # Get the Volume on the partition $volume = $partition | Get-Volume # Is the volume already formatted? if ($volume.FileSystem -eq '') { # The volume is not formatted $volParams = @{ FileSystem = $FSFormat Confirm = $false } if ($FSLabel) { # Set the File System label on the new volume $volParams["NewFileSystemLabel"] = $FSLabel } # if if ($AllocationUnitSize) { # Set the Allocation Unit Size on the new volume $volParams["AllocationUnitSize"] = $AllocationUnitSize } # if Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.FormattingVolumeMessage -f $volParams.FileSystem) ) -join '' ) # Format the volume $volume = $partition | Format-Volume @VolParams } else { # The volume is already formatted if ($PSBoundParameters.ContainsKey('FSFormat')) { # Check the filesystem format $fileSystem = $volume.FileSystem if ($fileSystem -ne $FSFormat) { # The file system format does not match # There is nothing we can do to resolve this (yet) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.FileSystemFormatMismatch -f ` $AccessPath, $fileSystem, $FSFormat) ) -join '' ) } # if } # if # Check the volume label if ($PSBoundParameters.ContainsKey('FSLabel')) { # The volume should have a label assigned if ($volume.FileSystemLabel -ne $FSLabel) { # The volume lable needs to be changed because it is different. Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.ChangingVolumeLabelMessage ` -f $AccessPath, $FSLabel) ) -join '' ) $volume | Set-Volume -NewFileSystemLabel $FSLabel } # if } # if } # if # Assign the access path if it isn't assigned if ($assignAccessPath) { <# Add the partition access path, but do not pipe $disk to Add-PartitionAccessPath because it is not supported in Windows Server 2012 R2 #> $null = Add-PartitionAccessPath ` -AccessPath $AccessPath ` -DiskNumber $disk.Number ` -PartitionNumber $partition.PartitionNumber Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.SuccessfullyInitializedMessage -f $AccessPath) ) -join '' ) } # if # Get the partitions on the disk $partition = $disk | Get-Partition -ErrorAction SilentlyContinue # Get the current partition state for NoDefaultDriveLetter $assignedPartition = $partition | Where-Object -Property AccessPaths -Contains -Value $AccessPath if ($assignedPartition.NoDefaultDriveLetter -ne $NoDefaultDriveLetter) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " "$($script:localizedData.NoDefaultDriveLetterMismatchMessage -f $assignedPartition.NoDefaultDriveLetter, $NoDefaultDriveLetter)" ) -join '' ) # Setting the partition property NoDefaultDriveLetter Set-Partition -PartitionNumber $assignedPartition.PartitionNumber ` -DiskNumber $disk.Number ` -NoDefaultDriveLetter $NoDefaultDriveLetter } # if } # Set-TargetResource <# .SYNOPSIS Tests if the disk is initialized, the partion exists and the access path is assigned. .PARAMETER AccessPath Specifies the access path folder to the assign the disk volume to .PARAMETER NoDefaultDriveLetter Prevents a default drive letter from being assigned to a newly created partition. Defaults to True. .PARAMETER DiskId Specifies the disk identifier for the disk to modify. .PARAMETER DiskIdType Specifies the identifier type the DiskId contains. Defaults to Number. .PARAMETER Size Specifies the size of new volume (use all available space on disk if not provided). .PARAMETER FSLabel Specifies the volume label to assign to the volume. .PARAMETER AllocationUnitSize Specifies the allocation unit size to use when formatting the volume. .PARAMETER FSFormat Specifies the file system format of the new volume. #> function Test-TargetResource { [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter(Mandatory = $true)] [System.String] $AccessPath, [Parameter()] [System.Boolean] $NoDefaultDriveLetter = $true, [Parameter(Mandatory = $true)] [System.String] $DiskId, [Parameter()] [ValidateSet('Number', 'UniqueId', 'Guid', 'Location')] [System.String] $DiskIdType = 'Number', [Parameter()] [System.UInt64] $Size, [Parameter()] [System.String] $FSLabel, [Parameter()] [System.UInt32] $AllocationUnitSize, [Parameter()] [ValidateSet('NTFS', 'ReFS')] [System.String] $FSFormat = 'NTFS' ) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.TestingDiskMessage -f $DiskIdType, $DiskId, $AccessPath) ) -join '' ) # Validate the AccessPath parameter adding a trailing slash $AccessPath = Assert-AccessPathValid -AccessPath $AccessPath -Slash Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.CheckDiskInitializedMessage -f $DiskIdType, $DiskId) ) -join '' ) # Get the Disk using the identifiers supplied $disk = Get-DiskByIdentifier ` -DiskId $DiskId ` -DiskIdType $DiskIdType if (-not $disk) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.DiskNotFoundMessage -f $DiskIdType, $DiskId) ) -join '' ) return $false } # if if ($disk.IsOffline) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.DiskNotOnlineMessage -f $DiskIdType, $DiskId) ) -join '' ) return $false } # if if ($disk.IsReadOnly) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.DiskReadOnlyMessage -f $DiskIdType, $DiskId) ) -join '' ) return $false } # if if ($disk.PartitionStyle -ne 'GPT') { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.DiskNotGPTMessage -f $DiskIdType, $DiskId, $Disk.PartitionStyle) ) -join '' ) return $false } # if # Get the partitions on the disk $partition = $disk | Get-Partition -ErrorAction SilentlyContinue # Check if the disk has an existing partition assigned to the access path $assignedPartition = $partition | Where-Object -Property AccessPaths -Contains -Value $AccessPath if (-not $assignedPartition) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.AccessPathNotFoundMessage -f $AccessPath) ) -join '' ) return $false } # if # Check if the partition NoDefaultDriveLetter parameter is correct if ($assignedPartition.NoDefaultDriveLetter -ne $NoDefaultDriveLetter) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.NoDefaultDriveLetterMismatchMessage -f $assignedPartition.NoDefaultDriveLetter, $NoDefaultDriveLetter) ) -join '' ) return $false } # if # Partition size was passed so check it if ($Size) { if ($assignedPartition.Size -ne $Size) { # The partition size mismatches but can't be changed (yet) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.SizeMismatchMessage -f ` $AccessPath, $assignedPartition.Size, $Size) ) -join '' ) } # if } # if # Prepare the AccessPath used in the CIM query (replaces '\' with '\\') $queryAccessPath = $AccessPath -replace '\\', '\\' $blockSize = (Get-CimInstance ` -Query "SELECT BlockSize from Win32_Volume WHERE Name = '$queryAccessPath'" ` -ErrorAction SilentlyContinue).BlockSize if ($blockSize -gt 0 -and $AllocationUnitSize -ne 0) { if ($AllocationUnitSize -ne $blockSize) { # The allocation unit size mismatches but can't be changed (yet) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.AllocationUnitSizeMismatchMessage -f ` $AccessPath, $($blockSize.BlockSize / 1KB), $($AllocationUnitSize / 1KB)) ) -join '' ) } # if } # if # Get the volume so the properties can be checked $volume = $assignedPartition | Get-Volume if ($PSBoundParameters.ContainsKey('FSFormat')) { # Check the filesystem format $fileSystem = $volume.FileSystem if ($fileSystem -ne $FSFormat) { # The file system format does not match but can't be changed (yet) Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.FileSystemFormatMismatch -f ` $AccessPath, $fileSystem, $FSFormat) ) -join '' ) } # if } # if if ($PSBoundParameters.ContainsKey('FSLabel')) { # Check the volume label $label = $volume.FileSystemLabel if ($label -ne $FSLabel) { # The assigned volume label is different and needs updating Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.DriveLabelMismatch -f ` $AccessPAth, $label, $FSLabel) ) -join '' ) return $false } # if } # if return $true } # Test-TargetResource <# .SYNOPSIS Check access path is found in PSDrives. .DESCRIPTION Check if the access path is found in the list of PSDrives and if not then forces a full refresh of the list and searches that. .PARAMETER AccessPath Specifies the access path folder. .NOTES The full refresh of PSDrive without any parameters is required because this is the only way to completely force a refresh of disks and other related CIM objects. If the refresh is not forced then there is a risk that the drive will appear to not be mounted, causing an error when the resource attempts to remount it. See https://github.com/dsccommunity/StorageDsc/issues/121 #> function Test-AccessPathInPSDrive { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $AccessPath ) try { $accessPathDisk = $AccessPath.Split(':')[0] Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.CheckingPSDriveMessage -f $AccessPath, $accessPathDisk) ) -join '' ) $accessPathDrive = Get-PSDrive -Name $accessPathDisk -ErrorAction Stop } catch { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.UnavailablePSDriveMessage -f $AccessPath, $accessPathDisk) ) -join '' ) $accessPathDrive = Get-PSDrive $accessPathDrive = $accessPathDrive | Where-Object -Property Name -eq $accessPathDisk } $accessPathFound = ($null -ne $accessPathDrive) if ($accessPathFound) { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.PSDriveFoundMessage -f $AccessPath, $accessPathDisk) ) -join '' ) } else { Write-Verbose -Message ( @( "$($MyInvocation.MyCommand): " $($script:localizedData.PSDriveNotFoundMessage -f $AccessPath, $accessPathDisk) ) -join '' ) } return $accessPathFound } # Test-AccessPathInPSDrive Export-ModuleMember -Function *-TargetResource |