我有这个 powershell 脚本,我正在调用它来备份我们客户的虚拟机:
# Author: Vladimir Eremin
# Created Date: 3/24/2015
# http://forums.veeam.com/member31097.html
#
##################################################################
# User Defined Variables
##################################################################
# Names of VMs to backup separated by comma (Mandatory). For instance, $VMNames = “VM1”,”VM2”
$VMNames = "ZIMBRA"
# Name of vCenter or standalone host VMs to backup reside on (Mandatory)
$HostName = "TGDALLAS"
# Directory that VM backups should go to (Mandatory; for instance, C:\Backup)
$Directory = "H:\backups"
# Desired compression level (Optional; Possible values: 0 - None, 4 - Dedupe-friendly, 5 - Optimal, 6 - High, 9 - Extreme)
$CompressionLevel = "5"
# Quiesce VM when taking snapshot (Optional; VMware Tools are required; Possible values: $True/$False)
$EnableQuiescence = $True
# Protect resulting backup with encryption key (Optional; $True/$False)
$EnableEncryption = $False
# Encryption Key (Optional; path to a secure string)
$EncryptionKey = ""
# Retention settings (Optional; By default, VeeamZIP files are not removed and kept in the specified location for an indefinite period of time.
# Possible values: Never , Tonight, TomorrowNight, In3days, In1Week, In2Weeks, In1Month)
$Retention = "In3Days"
##################################################################
# Notification Settings
##################################################################
# Enable notification (Optional)
$EnableNotification = $True
# Email SMTP server
$SMTPServer = "localhost"
# Email FROM
$EmailFrom = "[email protected]"
# Email TO
$EmailTo = "[email protected]"
# Email subject
$EmailSubject = "TGDALLAS Backup Status"
##################################################################
# Email formatting
##################################################################
$style = "<style>BODY{font-family: Arial; font-size: 10pt;}"
$style = $style + "TABLE{border: 1px solid black; border-collapse: collapse;}"
$style = $style + "TH{border: 1px solid black; background: #dddddd; padding: 5px; }"
$style = $style + "TD{border: 1px solid black; padding: 5px; }"
$style = $style + "</style>"
##################################################################
# End User Defined Variables
##################################################################
#################### DO NOT MODIFY PAST THIS LINE ################
Asnp VeeamPSSnapin
$Server = Get-VBRServer -name $HostName
$MesssagyBody = @()
foreach ($VMName in $VMNames)
{
Stop-VM -Name $VMNames
$VM = Find-VBRHvEntity -Name $VMName -Server $Server
If ($EnableEncryption)
{
$EncryptionKey = Add-VBREncryptionKey -Password (cat $EncryptionKey | ConvertTo-SecureString)
$ZIPSession = Start-VBRZip -Entity $VM -Folder $Directory -Compression $CompressionLevel -DisableQuiesce:(!$EnableQuiescence) -AutoDelete $Retention -EncryptionKey $EncryptionKey
}
Else
{
$ZIPSession = Start-VBRZip -Entity $VM -Folder $Directory -Compression $CompressionLevel -DisableQuiesce:(!$EnableQuiescence) -AutoDelete $Retention
}
If ($EnableNotification)
{
$TaskSessions = $ZIPSession.GetTaskSessions().logger.getlog().updatedrecords
$FailedSessions = $TaskSessions | where {$_.status -eq "EWarning" -or $_.Status -eq "EFailed"}
if ($FailedSessions -ne $Null)
{
$MesssagyBody = $MesssagyBody + ($ZIPSession | Select-Object @{n="Name";e={($_.name).Substring(0, $_.name.LastIndexOf("("))}} ,@{n="Start Time";e={$_.CreationTime}},@{n="End Time";e={$_.EndTime}},Result,@{n="Details";e={$FailedSessions.Title}})
}
Else
{
$MesssagyBody = $MesssagyBody + ($ZIPSession | Select-Object @{n="Name";e={($_.name).Substring(0, $_.name.LastIndexOf("("))}} ,@{n="Start Time";e={$_.CreationTime}},@{n="End Time";e={$_.EndTime}},Result,@{n="Details";e={($TaskSessions | sort creationtime -Descending | select -first 1).Title}})
}
}
Start-VM -Name $VMNames
}
If ($EnableNotification)
{
$Message = New-Object System.Net.Mail.MailMessage $EmailFrom, $EmailTo
$Message.Subject = $EmailSubject
$Message.IsBodyHTML = $True
$message.Body = $MesssagyBody | ConvertTo-Html -head $style | Out-String
$SMTP = New-Object Net.Mail.SmtpClient($SMTPServer)
$SMTP.Send($Message)
}
问题出在 start-vm 和 stop-vm 上。脚本没有等到 vm 停止或启动后才继续执行下一行。
我该如何让它做到这一点以便我的脚本不会再中断?
谢谢!
长颈
我把代码改成这样:
Stop-VM -Name $VMNames
while ((get-vm -name $vmnames).state -ne 'Running')
{
$a = Get-Date
Write-Output "Waiting 5 seconds for $VMName to stop: $a"
$state = (get-vm -name $vmnames).state
Write-Output "State: $state"
start-sleep -s 5
}
我得到了这个:
PS H:\> H:\VeeamBackupZimbra.ps1
Waiting 5 seconds for ZIMBRA to stop: 07/21/2016 14:39:03
State: Off
Waiting 5 seconds for ZIMBRA to stop: 07/21/2016 14:39:08
State: Off
Waiting 5 seconds for ZIMBRA to stop: 07/21/2016 14:39:13
State: Off
Waiting 5 seconds for ZIMBRA to stop: 07/21/2016 14:39:18
State: Off
Waiting 5 seconds for ZIMBRA to stop: 07/21/2016 14:39:23
State: Off
无限循环。
有什么建议么?
答案1
这将等待虚拟机运行:
while ((get-vm -name $vmnames).state -ne 'Running') { start-sleep -s 5 }
这将等到虚拟机关闭:
while ((get-vm -name $vmnames).state -ne 'Off') { start-sleep -s 5 }
答案2
正如 @rugk 所说,如果您通过 powershell 关闭虚拟机,而不是通过虚拟机内部的命令,那么至少目前不需要规定等待条件。您可以简单地写
Stop-VM -Name my_vm
my other code
并且直到虚拟机关闭之前,所有进一步的代码都只能在虚拟机停止后执行。