maximum data size in a remote command

Question

my powershell script sends a file to several clients within customised session using following code (code is shortened)

function DoCopyFile
{
    param(
    [Parameter(Mandatory=$true)] $RemoteHost,
    [Parameter(Mandatory=$true)] $SrcPath,
    [Parameter(Mandatory=$true)] $DstPath,
    [Parameter(Mandatory=$true)] $Session)
.
.
.               
    $Chunks | Invoke-Command -Session $Session -ScriptBlock { `
        param($Dest, $Length)

        $DestBytes = new-object byte[] $Length
        $Pos = 0
        foreach ($Chunk in $input) {
            [GC]::Collect()
            [Array]::Copy($Chunk, 0, $DestBytes, $Pos, $Chunk.Length)
            $Pos += $Chunk.Length
        }

        [IO.File]::WriteAllBytes($Dest, $DestBytes)
        [GC]::Collect()
    } -ArgumentList $DstPath, $SrcBytes.Length
.
.
.
}


$Pwd = ConvertTo-SecureString $Node.Auth.Password -asplaintext -force
$Cred = new-object -typename System.Management.Automation.PSCredential -ArgumentList ("{0}\{1}" -f $Name, $Node.Auth.Username),$Pwd
$Sopts = New-PSSessionOption -MaximumReceivedDataSizePerCommand 99000000
$Session = New-PSSession -ComputerName $Name -Credential $Cred -SessionOption $Sopts
DoCopyFile $Name ("{0}\{1}" -f $Node.Installer.ResourceDir, $Driver.Name) $Dest $Session

The full copy function is described here: http://poshcode.org/2216

The problem arises with a file larger than 52MB. it fails with following error:

Sending data to a remote command failed with the following error message: The total data received from the remote
client exceeded allowed maximum. Allowed maximum is 52428800. For more information, see the
about_Remote_Troubleshooting Help topic.
    + CategoryInfo          : OperationStopped: (CLI-002:String) [], PSRemotingTransportException
    + FullyQualifiedErrorId : JobFailure
    + PSComputerName        : CLI-002

As you see in the code, i use customised ps session. when i set MaximumReceivedDataSizePerCommand to very low values (like 10kb) it fails with a message which tells maximum is 10kb, so i assume that MaximumReceivedDataSizePerCommand is applied to ps session object.

Is it required to do this configuration on remote machine or somewhere else? what is causing this error?

thanks.

Answer 1

You need to create a new PSSessionConfiguration (this to not use the default one) in your remote computer:

Register-PSSessionConfiguration -Name DataNoLimits #or the name you like.

Then configuring the parameter you want (in this case MaximumReceivedDataSizePerCommandMB and MaximumReceivedObjectSizeMB):

Set-PSSessionConfiguration -Name DataNoLimits `
-MaximumReceivedDataSizePerCommandMB 500 -MaximumReceivedObjectSizeMB 500

Then create the new session with the PSSessionConfiguration you need:

$Session = New-PSSession -ComputerName MyRemoteComp -ConfigurationName DataNoLimits

in your local Computer.

In this way using the Send-File from posh.org I copy a file of ~80MB size. Bigger size return me outofmemory exception.

More on this here.