X-Git-Url: https://git.p6c8.net/dsmonrot.git/blobdiff_plain/bca3ccac96405fb70f0bf68ae4bf19233e295971..0fc1b183684feb6ab0f9cebb949233088e5c575a:/dsmonrot.ps1

diff --git a/dsmonrot.ps1 b/dsmonrot.ps1
index b838d75..6a510c9 100644
--- a/dsmonrot.ps1
+++ b/dsmonrot.ps1
@@ -13,12 +13,23 @@
 
 # Path to backup directory
 [String]$backupDir = "Z:\"
-# Keep backup for this amount of months (excluding the current month), -1 for indefinite
+# Keep backup for this amount of months (excluding the current month),
+# -1 for indefinite
 [Int32]$keepMonths = 2
+# Rotate BEFORE the beginning of a full backup (default is after a successful
+# full backup)
+# WARNING: If this option is set to $True and the full backup fails you have
+# NO backup
+$rotateBeforeBackup = $False
 # Path to Drive Snapshot
 [String]$dsPath = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.exe"
-# Path to Drive Snapshot log file
-[String]$dsLogFile = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.log"
+# Path to Drive Snapshot log file (specify only the file name if you set
+# $dsLogFileToBackup to $True)
+#[String]$dsLogFile = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.log"
+[String]$dsLogFile = "snapshot.log"
+# Set to $True if you want to put the log file of Drive Snapshot into the same
+# directory as the backup
+[Boolean]$dsLogFileToBackup = $True
 # Disks to backup, see http://www.drivesnapshot.de/en/commandline.htm
 [String]$disksToBackup = "HD1:1"
 # Path to DSMonRot log file
@@ -40,7 +51,7 @@
 # To address of email notification
 [String]$emailToAddress = "patrick@test.local"
 # Subject of email notification
-[String]$emailSubject = "DSMonRot"
+[String]$emailSubject = "DSMonRot on $env:computername"
 # Mail server
 [String]$emailMailserver = "localhost"
 # SMTP Port
@@ -56,7 +67,7 @@
 
 # End of config
 
-$dsAdditionalArgs = @("--logfile:$dsLogFile", "--UseVSS")
+$dsAdditionalArgs = @("--UseVSS")
 
 # Allow SMTP with SSL and SMTP Auth
 # see: http://petermorrissey.blogspot.de/2013/01/sending-smtp-emails-with-powershell.html
@@ -64,24 +75,52 @@ function Send-Email([String]$body) {
 	Write-Host "Sending email: $emailToAddress, $body"
 	
 	try {
-		$smtp = New-Object System.Net.Mail.SmtpClient($emailMailServer, $emailPort);
+		$smtp = New-Object System.Net.Mail.SmtpClient($emailMailServer, $emailPort)
 
 		$smtp.EnableSSL = $emailSSL
 
 		if($emailAuth) {
-			$smtp.Credentials = New-Object System.Net.NetworkCredential($emailUser, $emailPassword);
+			$smtp.Credentials = New-Object System.Net.NetworkCredential($emailUser, $emailPassword)
 		}
 
-		$smtp.Send($emailFromAddress, $emailToAddress, $emailSubject, $body);
+		$smtp.Send($emailFromAddress, $emailToAddress, $emailSubject, $body)
 	}
 	catch {
 		Write-Host "Could not send email: $_.Exception.Message"
 	}
 }
 
+function Rotate-Backup {
+	if($keepMonths -lt 0) {
+		return
+	}
+
+	Write-Host "Rotating"
+	
+	$keepMonthsCount = $keepMonths
+	
+	Get-ChildItem $backupDir -Directory | Where-Object {($_.Name -ne $currMonth) -and ($_.Name -match "^\d{4,}-\d{2}$")} | Sort-Object -Descending |
+	Foreach-Object {
+		Write-Host $_ "=>" $_.FullName
+		
+		if($keepMonthsCount -ge 0) {
+			$keepMonthsCount--
+		}
+		
+		if($keepMonthsCount -eq -1) {
+			Write-Host "Deleting $_"
+			Remove-Item -Recurse -Force $_.FullName
+		}
+	}
+}
+
+$startTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"
+Write-Host "Started at $startTime"
+
 $errorMessages = @()
 
 $smbConnected = $False
+$doBackup = $False
 $success = $False
 
 if($smbDrive) {
@@ -105,7 +144,7 @@ if($smbDrive) {
 		$smbConnected = $True
 	}
 	Catch {
-		Write-Host "Could not connect to network drive: $_.Exception.Message"
+		Write-Host "Could not connect to network drive $smbDrive`: $_.Exception.Message"
 		exit
 	}
 }
@@ -139,81 +178,113 @@ if((Test-Path $backupTarget) -and (Test-Path $backupTargetFull) -and (Test-Path
 		
 		try {
 			New-Item -ItemType directory -Path $backupTargetDiff -ErrorAction Stop
-		
-			$success = $True
+			$doBackup = $True
 		}
 		catch {
 			Write-Host "Could not create directory $backupTargetDiff`: $_.Exception.Message"
-			exit
+			$errorMessages += "Could not create directory $backupTargetDiff`: $_.Exception.Message"
 		}
 		
-		$dsArgs = @($disksToBackup, "$backupTargetDiff\`$disk.sna", "-h$backupTargetFull\`$disk.hsh") + $dsAdditionalArgs
-		Write-Host $dsPath ($dsArgs -join " ")
-		
-		& $dsPath $dsArgs
-		
-		if($LastExitCode -ne 0) {
-			Write-Host "Error code: $LastExitCode"
+		if($doBackup) {
+			$dsLogPath = if($dsLogFileToBackup) { "$backupTargetDiff\$dsLogFile" } else { $dsLogFile }
+			
+			$dsArgs = @($disksToBackup, "--logfile:$dsLogPath", "$backupTargetDiff\`$disk.sna", "-h$backupTargetFull\`$disk.hsh") + $dsAdditionalArgs
+			Write-Host $dsPath ($dsArgs -join " ")
+			
+			& $dsPath $dsArgs
+			
+			if($LastExitCode -ne 0) {
+				Write-Host "Drive Snapshot failed to backup! Exit code: $LastExitCode"
+				$errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"
+			}
+			else {
+				$success = $True
+			}
 		}
 	}
 	else {
 		Write-Host "Directory $backupTargetDiff already exists!"
-		
 		$errorMessages += "Directory $backupTargetDiff already exists!"
 	}
 }
 else {
 	Write-Host "Full backup"
-	
+
 	if(!(Test-Path $backupTarget)) {
 		Write-Host "Creating directory $backupTarget"
-		New-Item -ItemType directory -Path $backupTarget
+		
+		try {
+			New-Item -ItemType directory -Path $backupTarget -ErrorAction Stop
+		}
+		catch {
+			Write-Host "Could not create directory $backupTarget`: $_.Exception.Message"
+			$errorMessages += "Could not create directory $backupTarget`: $_.Exception.Message"
+		}
 	}
 	
 	if(!(Test-Path $backupTargetFull)) {
 		Write-Host "Creating directory $backupTargetFull"
-		New-Item -ItemType directory -Path $backupTargetFull
+		
+		try {
+			New-Item -ItemType directory -Path $backupTargetFull -ErrorAction Stop
+			$doBackup = $True
+		}
+		catch {
+			Write-Host "Could not create directory $backupTargetFull`: $_.Exception.Message"
+			$errorMessages += "Could not create directory $backupTargetFull`: $_.Exception.Message"
+		}
 	}
-
-	$dsArgs = @($disksToBackup, "$backupTargetFull\`$disk.sna") + $dsAdditionalArgs
-	Write-Host $dsPath ($dsArgs -join " ")
-	
-	& $dsPath $dsArgs
-	
-	if($LastExitCode -ne 0) {
-		Write-Host "Error code: $LastExitCode"
+	else {
+		$doBackup = $True
 	}
 	
-	$success = $False
-}
+	if($doBackup) {
+		if($rotateBeforeBackup) {
+			Rotate-Backup
+		}
+		
+		$dsLogPath = if($dsLogFileToBackup) { "$backupTargetFull\$dsLogFile" } else { $dsLogFile }
 
-if($isDiff -eq $False -and $success -eq $True -and $keepMonths -ge 0) {
-	Write-Host "Rotating"
-	
-	$keepMonthsCount = $keepMonths
-	
-	Get-ChildItem $backupDir -Directory | Where-Object {($_.Name -ne $currMonth) -and ($_.Name -match "^\d{4,}-\d{2}$")} | Sort-Object -Descending |
-	Foreach-Object {
-		Write-Host $_ "=>" $_.FullName
+		$dsArgs = @($disksToBackup, "--logfile:$dsLogPath", "$backupTargetFull\`$disk.sna") + $dsAdditionalArgs
+		Write-Host $dsPath ($dsArgs -join " ")
 		
-		if($keepMonthsCount -ge 0) {
-			$keepMonthsCount--
-		}
+		& $dsPath $dsArgs
 		
-		Write-Host $keepMonthsCount
+		if($LastExitCode -ne 0) {
+			Write-Host "Drive Snapshot failed to backup! Exit code: $LastExitCode"
+			$errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"
+		}
+		else {
+			$success = $True
+		}
 		
-		if($keepMonthsCount -eq -1) {
-			Write-Host "Deleting $_"
-			Remove-Item -Recurse -Force $_.FullName
+		if($rotateBeforeBackup -eq $False -and $success -eq $True) {
+			Rotate-Backup
 		}
 	}
 }
 
 if($smbConnected) {
 	Write-Host "Disconnecting network drive"
-	Remove-PSDrive $smbDrive
+	
+	try {
+		Remove-PSDrive $smbDrive -ErrorAction Stop
+	}
+	catch {
+		Write-Host "Could not disconnect network drive $smbDrive`: $_.Exception.Message"
+		$errorMessages +=  "Could not disconnect network drive $smbDrive`: $_.Exception.Message"
+	}
 }
 
 if($emailOnError -and $errorMessages.Count -gt 0) {
-	Send-Email ("Error:`n"+($errorMessages -join "`n"))
-}
\ No newline at end of file
+	$emailBody  = "This is DSMonRot on $env:computername, started at $startTime.`n"
+	$emailBody += "An error occured while performing a backup. Below are the error messages and some status information.`n`n"
+	$emailBody += "Differential backup: $isDiff`n"
+	$emailBody += "Backup successfull:  $success`n`n"
+	$emailBody += ($errorMessages -join "`n")
+
+	Send-Email ($emailBody)
+}
+
+$endTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"
+Write-Host "Ended at $endTime"
\ No newline at end of file