Modules/ExchangeDscDiskPart/ExchangeDscDiskPart.psm1
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<#
.SYNOPSIS Adds the array of commands to a single temp file, and has DiskPart execute the temp file. .PARAMETER Commands An array of commands to have DiskPart execute, in order. .PARAMETER ShowOutput Whether the output from DiskPart should be shown. Defaults to False. #> function Start-DiskPart { [CmdletBinding()] [OutputType([System.String])] param ( [Parameter()] [System.Array] $Commands, [Parameter()] [System.Boolean] $ShowOutput = $true ) $Tempfile = [System.IO.Path]::GetTempFileName() foreach ($Com in $Commands) { $CMDLine = $CMDLine + $Com + ", " Add-Content $Tempfile $Com } $Output = DiskPart /s $Tempfile if ($ShowOutput) { Write-Verbose -Message "Executed Diskpart commands: $(Convert-StringArrayToCommaSeparatedString -Array $Commands). Result:" Write-Verbose -Message "$Output" } Remove-Item $Tempfile return $Output } <# .SYNOPSIS Uses DiskPart to obtain information on the disks and volumes that already exist on the system. #> function Get-DiskInfo { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param () [System.Collections.Hashtable] $diskInfo = @{ DiskToVolumeMap = @{ } VolumeToMountPointMap = @{ } DiskSizeMap = @{ } } [int[]] $diskNums = @() $diskList = Start-DiskPart -Commands "List Disk" -ShowOutput $false $foundDisks = $false # First parse out the list of disks foreach ($line in $diskList) { if ($foundDisks -eq $true) { if ($line.Contains("Disk ")) { # First find the disk number $startIndex = " Disk ".Length $endIndex = " -------- ".Length $diskNumStr = $line.Substring($startIndex, $endIndex - $startIndex).Trim() if ($diskNumStr.Length -gt 0) { $diskNum = [int]::Parse($diskNumStr) $diskNums += $diskNum } # Now find the disk size $startIndex = " -------- ------------- ".Length $endIndex = " -------- ------------- ------- ".Length $diskSize = $line.Substring($startIndex, $endIndex - $startIndex).Trim() if ($diskSize.Length -gt 0 -and $null -ne $diskNum) { $diskInfo.DiskSizeMap.Add($diskNum, $diskSize) } } } elseif ($line.Contains("-------- ------------- ------- ------- --- ---")) # Scroll forward until we find the where the list of disks starts { $foundDisks = $true } } # Now get info on the disks foreach ($diskNum in $diskNums) { $diskDetails = Start-DiskPart -Commands "Select Disk $($diskNum)", "Detail Disk" -ShowOutput $false $foundVolumes = $false for ($i = 0; $i -lt $diskDetails.Count; $i++) { $line = $diskDetails[$i] if ($foundVolumes -eq $true) { if ($line.StartsWith(" Volume ")) { # First find the volume number $volStart = " Volume ".Length $volEnd = " ---------- ".Length $volStr = $line.Substring($volStart, $volEnd - $volStart).Trim() if ($volStr.Length -gt 0) { $volNum = [int]::Parse($volStr) Add-ObjectToObjectArrayMap -Map $diskInfo.DiskToVolumeMap -Key $diskNum -Value $volNum # Now parse out the drive letter if it's set $letterStart = " ---------- ".Length $letterEnd = $line.IndexOf(" ---------- --- ") + " ---------- --- ".Length $letter = $line.Substring($letterStart, $letterEnd - $letterStart).Trim() if ($letter.Length -eq 1) { Add-ObjectToObjectArrayMap -Map $diskInfo.VolumeToMountPointMap -Key $volNum -Value $letter } # Now find all the mount points do { $line = $diskDetails[++$i] if ($null -eq $line -or $line.StartsWith(" Volume ") -or $line.Trim().Length -eq 0) # We've hit the next volume, or the end of all info { $i-- # Move $i back one as we may have overrun the start of the next volume info break } else { $mountPoint = $line.Trim() Add-ObjectToObjectArrayMap -Map $diskInfo.VolumeToMountPointMap -Key $volNum -Value $mountPoint } } while ($i -lt $diskDetails.Count) } } } elseif ($line.Contains("There are no volumes.")) { [System.String[]] $emptyArray = @() $diskInfo.DiskToVolumeMap[$diskNum] = $emptyArray break } elseif ($line.Contains("---------- --- ----------- ----- ---------- ------- --------- --------")) { $foundVolumes = $true } } } return $diskInfo } <# .SYNOPSIS Takes an array of String objects and converts it into a single, comma separated string. .PARAMETER Array The String array to convert. #> function Convert-StringArrayToCommaSeparatedString { [CmdletBinding()] [OutputType([System.String])] param ( [Parameter()] [System.String[]] $Array ) $string = "" if ($null -ne $Array -and $Array.Count -gt 0) { $string = $Array[0] for ($i = 1; $i -lt $Array.Count; $i++) { $string += ",$($Array[$i])" } } return $string } <# .SYNOPSIS Takes a Hashtable, where all members are Object arrays, and adds the input Value to the Hashtable member with the given Key. .PARAMETER Map The Hashtable obejct to add to. .PARAMETER Key The Key within the Hashtable to add the given Value to. .PARAMETER Value The Value to add to the Hashtable at the given Key. #> function Add-ObjectToObjectArrayMap { [CmdletBinding()] param ( [Parameter()] [System.Collections.Hashtable] $Map, [Parameter()] [System.Object] $Key, [Parameter()] [System.Object] $Value ) if ($Map.ContainsKey($Key)) { $Map[$Key] += $Value } else { [Object[]] $Array = $Value $Map[$Key] = $Array } } <# .SYNOPSIS Checks whether the mount point specified in the given path already exists as a mount point. Returns the volume number if it does exist, else -1. .PARAMETER Path The mount point path to look for. .PARAMETER DiskInfo A Hashtable containing discovered disk information. #> function Get-MountPointVolumeNumber { [CmdletBinding()] [OutputType([System.Int32])] param ( [Parameter(Mandatory = $true)] [System.String] $Path, [Parameter(Mandatory = $true)] [System.Collections.Hashtable] $DiskInfo ) foreach ($key in $DiskInfo.VolumeToMountPointMap.Keys) { foreach ($value in $DiskInfo.VolumeToMountPointMap[$key]) { # Make sure both paths end with the same character if (($value.EndsWith("\")) -eq $false) { $value += "\" } if (($Path.EndsWith("\")) -eq $false) { $Path += "\" } # Do the comparison if ($value -like $Path) { return $key } } } return -1 } |