Question

编写一个小脚本，使用WMI查询从Windows服务器中查找多路径数。它适用于可以直接连接而没有任何问题的服务器。但是，如果一个服务器是可ping的但无法通过WMI脚本访问，则返回错误需要很长时间（例如，如果在servers.txt列表中存在linux服务器主机名）..有人可以帮我做同样的事情以更快的方式..？

$Servers = Get-Content .\Servers.txt

$ErrorActionPreference = ‘SilentlyContinue’

FOREACH ($Server in $Servers) {

Write-Host $Server -nonewline

if (test-connection -computername $Server -Count 1 -quiet) {

$Name = $null
$NoPath =$null
$MPIODisks =$null

$MPIODisks = Get-WmiObject -Namespace root\wmi -Class mpio_disk_info -ComputerName "$Server" |Select-Object "DriveInfo"

    if ($MPIODisks -eq $Null) {

    write-host "`t - Unable to connect" -fore "RED"

    } else {    

        write-host ""
        write-host "Drive Name `tNo.Path" -fore "yellow"

            Foreach ($Disk in $MPIODisks) {
                $mpiodrives = $disk.DriveInfo

                    foreach ($Drive in $mpiodrives) {
                $Name = $Drive.Name
                $NoPath = $Drive.Numberpaths

                    If ($NoPath -lt 4) {
                    Write-Host $Name `t -nonewline
                    write-host $NoPath -fore "Red"
                    } else {
                    Write-Host $Name `t -nonewline
                    write-host $NoPath -fore "Green"
                    }
                    }
            }

    }

    write-host ""

} else {

write-host "`t- Unknown Host" -fore "Red"
write-host ""
}

}

Answer 1

有a connect item for Get-WmiObject to add a timeout parameter。该项中提到的解决方法是将WMI命令仅传递给Wait-Job并指定超时时间（以秒为单位）。

只要你的PS版本3.0或更高版本，这应该适合你：

Get-WmiObject win32_computersystem -ComputerName <hostname> -AsJob | Wait-Job -Timeout 10 | Receive-Job

Answer 2

作为替代方案，您可以通过将所有服务器全部传递到查询中来避免慢速循环一次查询一个服务器，从而立即向所有服务器询问结果。我没有要测试的任何MPIO驱动器，但它看起来像这样（使用带有超时参数的Get-Ciminstance）：

$servers = Get-Content .\Servers.txt

# Get data from all servers with timeout
$servers_ok = Get-CimInstance -computername $servers -Namespace root\wmi -Class mpio_disk_info -ErrorAction SilentlyContinue -OperationTimeoutSec 1 | group pscomputername

# Output which servers gave no result back
foreach($no_result in $($servers | where { $_ -NotIn $servers_ok.Name })) {
    write-host "No result for $no_result" -ForegroundColor Red
}

# Loop over the results and output
foreach($server in $servers_ok) {

    Write-Host $server.Name 

    foreach($mpiodisk in $server.group)  {

        $mpiodrives = $mpiodisk.DriveInfo

        foreach ($mpiodrive in $mpiodrives) {

            $name = $mpiodrive.Name
            $noPath = $mpiodrive.NumberPaths

            If ($NoPath -lt 4) {
                write-host $name `t -nonewline
                write-host $noPath -fore "Red"
            } else {
                write-host $name `t -nonewline
                write-host $noPath -fore "Green"
            }
        }
    }
}

是否有更快的方法从Powershell进行WMI查询..？

2 个答案: