Powershell calling Robocopy to get top32 largest files total size not working

Question

The below script is a combination of DFS settings and also the Robocopy command to list the top 32 biggest files in the file servers.

I need to execute the below code aga

Answer 1

I agree with Steven in thinking your regex could be simpler and that you probably don't need the first ForEach-Object in your code.

I cannot try this myself, but perhaps this is a faster alternative for you:

@{ n = 'Top 32 Largest Files Size'; e = { 
    (robocopy /L /E /NDL /NJH /NJS /NP /NODCOPY /BYTES $_.ContentPath 'NoDestination' | ForEach-Object {
        [int64]([regex]'(?i)New File\s*(\d+)').Match($_).Groups[1].Value 
    } | Sort-Object -Descending | Select-Object -First 32 | Measure-Object -Sum).Sum / 1GB }
}

^{This doesn't need the if to check each returned line from robocopy, because lines that do not match the regex will yield a value of 0}

---

Again, sorry I cannot test this myself, but perhaps it would be better to let the servers themselves do the heavy lifting of calculating the sizes. Especially because from your description, I understand that running the code RDP on each server individually works.

In this case, you do need the first ForEach-Object loop.

Please can you try

$scriptBlock = {
    param ([string]$Path)
    (robocopy /L /E /NDL /NJH /NJS /NP /NODCOPY /BYTES $Path 'NoDestination' | ForEach-Object {
        [int64]([regex]'(?i)New File\s*(\d+)').Match($_).Groups[1].Value 
    } | Sort-Object -Descending | Select-Object -First 32 | Measure-Object -Sum).Sum / 1GB
}

$results = Get-DfsrMembership | ForEach-Object {
    Write-Host "Retrieving Top 32 Largest Files Size from server $($_.ComputerName).."
    # get the calculated size from the server
    # because of the large number of files, this may take some time..
    $size = Invoke-Command -ComputerName $_.ComputerName -ScriptBlock $scriptBlock -ArgumentList $_.ContentPath
    [PsCustomObject]@{
        'Server - IP'               = "$($_.ComputerName) [$((Resolve-DnsName -Name $_.ComputerName -Type A).IPAddress)]"
        'Staging Path Quota GB'     = ($_.StagingPathQuotaInMB / 1024)
        'Top 32 Largest Files Size' = $size
        'GroupName'                 = $_.GroupName
        'ContentPath'               = $_.ContentPath
        'State'                     = $_.State
    }
}

$results | Sort-Object 'Top 32 Largest Files Size'

^{It is quite possible you need to add parameter -Credential to the Invoke-Command cmdlet}