Question

我有一个PowerShell脚本，它基本上是一个迁移数据的队列。基本上，脚本会通过问卷调查，并根据问卷调查，创建批量命令。所有这些工作都很好，它正在执行我遇到问题的迁移。

在示例中，我一次迁移9个LUN。一旦unix系统报告这9个已完成（而不是正在进行零迁移），它将删除旧LUN并启动新批处理直到完成。

这是我认为我坚持的代码：

function Execute_AddVdisk {
    $FileCount = 1
    $vDiskNames = Get-Content $WorkingDir\vDiskNames.txt
    $date = Get-Date
    Write-Output "$date - vDisk copy starting..." | Out-File $WorkingDir\log.txt -Encoding Ascii -Append
    Write-Output "`n" | Out-File $WorkingDir\log.txt -Encoding ascii -Append
    Execute_AddVdisk-Continue
}

function Execute_AddVdisk-Continue {
    if (Test-Path $WorkingDir\migrate_vdisks-$FileCount.txt) {
        $date = Get-Date
        Write-Host "Adding vDisk copies. Executing file $WorkingDir\migrate_vdisks-$FileCount.txt"
        Write-Output "$date - Executing file $WorkingDir\migrate_vdisks-$FileCount.txt" | Out-File $WorkingDir\log.txt -Encoding Ascii -Append
        CMD.EXE /C "ssh user@$svc -i PathToKey -m $WorkingDir\migrate_vdisks-$FileCount.txt"
        Delete_vDisks
    } else {
        Write-Host "All migrations are complete. Exiting."
        Send-MailMessage -From "someone@somewhere.com" -To "someone@somewhere.com" -Subject "Something" -Body "Some Stuff" -Attachments "somelog" -SmtpServer somemailserver
        Set-Location C:\
        Remove-Item -Path $WorkingDir -Recurse
        exit
    }
}

function Delete_vDisks {
    $SessionCopies = @()
    $AllvDiskCopies = CMD.EXE /C "ssh user@$svc -i PathToKey lsvdisksyncprogress -delim ," | ConvertFrom-Csv
    if ($AllvDiskCopies -eq $null) {
        $date = Get-Date
        Write-Host "Deleting vDisk copies. Executing file $WorkingDir\Remove_vDiskCopies-$FileCount.txt"
        Write-Output "$date - Executing file $WorkingDir\Remove_vDiskCopies-$FileCount.txt" | Out-File $WorkingDir\log.txt -Encoding ascii -Append
        CMD.EXE /C "ssh user@$svc -i PathToKey -m $WorkingDir\Remove_vDiskCopies-$FileCount.txt"
        $FileCount++
        Execute_AddVdisk-Continue
    } else {
        foreach ($vDiskCopy in $AllvDiskCopies.vdisk_name) {
            $SessionCopies += $vDiskNames | Where-Object {$_ -like $vDiskCopy}
        }
        if ($SessionCopies -eq $null) {
            $date = Get-Date
            Write-Host "Deleting vDisk copies. Executing file $WorkingDir\Remove_vDiskCopies-$FileCount.txt"
            Write-Output "$date - Executing file $WorkingDir\Remove_vDiskCopies-$FileCount.txt" | Out-File $WorkingDir\log.txt -Encoding Ascii -Append
            CMD.EXE /C "ssh user@$svc -i PathToKey -m $WorkingDir\Remove_vDiskCopies-$FileCount.txt"
            $FileCount++
            Execute_AddVdisk-Continue
        } else {
            $date = Get-Date
            $SessionCopiesCount = $SessionCopies.Count
            Write-Host "$SessionCopiesCount copies are still being synched. Sleeping for 60 seconds and checking again..."
            Write-Output "$date - $SessionCopiesCount copies are still being synched. Sleeping for 60 seconds and checking again..." | Out-File $WorkingDir\log.txt -Encoding ascii -Append
            Start-Sleep -Seconds 60
            Delete_vDisks
        }
    }
}

这是日志的截断版本：

04/05/2017 10:24:01 - Executing file C:\scripts\SVC_Data_Migrate\05Apr2017-1021\migrate_vdisks-1.txt
04/05/2017 10:24:08 - 9 copies are still being synched. Sleeping for 60 seconds and checking again...
04/05/2017 10:34:16 - 2 copies are still being synched. Sleeping for 60 seconds and checking again...
04/05/2017 10:35:17 - Executing file C:\scripts\SVC_Data_Migrate\05Apr2017-1021\Remove_vDiskCopies-1.txt
04/05/2017 10:35:21 - Executing file C:\scripts\SVC_Data_Migrate\05Apr2017-1021\migrate_vdisks-2.txt
04/05/2017 10:35:27 - 9 copies are still being synched. Sleeping for 60 seconds and checking again...
04/05/2017 11:43:26 - 1 copies are still being synched. Sleeping for 60 seconds and checking again...
04/05/2017 11:44:27 - Executing file C:\scripts\SVC_Data_Migrate\05Apr2017-1021\Remove_vDiskCopies-2.txt
04/05/2017 11:44:31 - Executing file C:\scripts\SVC_Data_Migrate\05Apr2017-1021\migrate_vdisks-3.txt
04/05/2017 11:44:40 - 9 copies are still being synched. Sleeping for 60 seconds and checking again...
04/05/2017 11:58:52 - 9 copies are still being synched. Sleeping for 60 seconds and checking again...

在这种特殊情况下，我有10＆＃39; migrate_vdisks-x.txt＆＃39;文件。从日志中，您可以看到if / else语句正在运行。它等待直到找不到任何活动的迁移，删除旧的LUN，然后找到下一个“migrate_vdisks-x.txt”＃39;文件存在，执行迁移，并等待它们完成等等。

所有这些说法，这个特定的运行在上午11:58:52停止报告。日志中没有更多条目，脚本永远不会完成。此脚本作为任务运行，任务的状态为“正在运行”。我首先想到可能ssh.exe（只是plink重命名）被挂起或类似的东西，但当我在服务器上搜索正在运行的进程时，我看不到ssh个进程。 / p>

我不知道if / else循环如何在几次迭代中起作用，然后只是停滞不动而没有做任何事情。任何想法/建议总是受到赞赏。

此外，而不是：

if ($AllvDiskCopies -eq $null)

我也尝试过计数，因为它是一个数组，我最终得到了相同的结果。

if ($AllvDiskCopies.Count -eq 0)

PowerShell if / else语句似乎停滞不前

0 个答案: