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- Avoid trying to create the "Full" directory when creating month's
[dsmonrot.git] / dsmonrot.ps1
diff --git a/dsmonrot.ps1 b/dsmonrot.ps1
index 82b501487a238bfe134293574f1c3d022ffc546d..0323afbbaa4a3516de57cc696481bbf3db00b198 100644 (file)
--- a/dsmonrot.ps1
+++ b/dsmonrot.ps1
@@ -16,6 +16,11 @@
 # Keep backup for this amount of months (excluding the current month),\r
 # -1 for indefinite\r
 [Int32]$keepMonths = 2\r
 # Keep backup for this amount of months (excluding the current month),\r
 # -1 for indefinite\r
 [Int32]$keepMonths = 2\r
+# Rotate BEFORE the beginning of a full backup (default is after a successful\r
+# full backup)\r
+# WARNING: If this option is set to $True and the full backup fails you could\r
+# have NO backup\r
+$rotateBeforeBackup = $False\r
 # Path to Drive Snapshot\r
 [String]$dsPath = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.exe"\r
 # Path to Drive Snapshot log file (specify only the file name if you set\r
 # Path to Drive Snapshot\r
 [String]$dsPath = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.exe"\r
 # Path to Drive Snapshot log file (specify only the file name if you set\r
@@ -85,15 +90,42 @@ function Send-Email([String]$body) {
        }\r
 }\r
 \r
        }\r
 }\r
 \r
-Write-Host "Started at" (Get-Date -format "yyyy-MM-dd HH:mm:ss")\r
+function Rotate-Backup {\r
+       if($keepMonths -lt 0) {\r
+               return\r
+       }\r
+\r
+       Write-Host "Rotating"\r
+       \r
+       $keepMonthsCount = $keepMonths\r
+       \r
+       Get-ChildItem $backupDir -Directory | Where-Object {($_.Name -ne $currMonth) -and ($_.Name -match "^\d{4,}-\d{2}$")} | Sort-Object -Descending |\r
+       Foreach-Object {\r
+               Write-Host $_ "=>" $_.FullName\r
+               \r
+               if($keepMonthsCount -ge 0) {\r
+                       $keepMonthsCount--\r
+               }\r
+               \r
+               if($keepMonthsCount -eq -1) {\r
+                       Write-Host "Deleting $_"\r
+                       Remove-Item -Recurse -Force $_.FullName\r
+               }\r
+       }\r
+}\r
+\r
+$startTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"\r
+Write-Host "Started at $startTime"\r
 \r
 $errorMessages = @()\r
 \r
 $smbConnected = $False\r
 $success = $False\r
 \r
 $errorMessages = @()\r
 \r
 $smbConnected = $False\r
 $success = $False\r
+$isDiff = $False\r
+$dsCommand = ""\r
 \r
 if($smbDrive) {\r
 \r
 if($smbDrive) {\r
-       Try {\r
+       try {\r
                Write-Host "Connecting network drive"\r
                \r
                if($smbUser -and $smbPassword) {\r
                Write-Host "Connecting network drive"\r
                \r
                if($smbUser -and $smbPassword) {\r
@@ -112,114 +144,124 @@ if($smbDrive) {
                \r
                $smbConnected = $True\r
        }\r
                \r
                $smbConnected = $True\r
        }\r
-       Catch {\r
+       catch {\r
                Write-Host "Could not connect to network drive $smbDrive`: $_.Exception.Message"\r
                Write-Host "Could not connect to network drive $smbDrive`: $_.Exception.Message"\r
-               exit\r
+               $errorMessages += "Could not connect to network drive $smbDrive`: $_.Exception.Message"\r
        }\r
 }\r
 \r
 if(!(Test-Path $backupDir)) {\r
        Write-Host "Directory $backupDir does not exist!"\r
        }\r
 }\r
 \r
 if(!(Test-Path $backupDir)) {\r
        Write-Host "Directory $backupDir does not exist!"\r
-       exit\r
+       $errorMessages += "Directory $backupDir does not exist!"\r
 }\r
 \r
 }\r
 \r
-$currMonth = Get-Date -format "yyyy-MM"\r
-$currDay = Get-Date -format "yyyy-MM-dd"\r
+if($errorMessages.Count -eq 0) {\r
+       $currMonth = Get-Date -format "yyyy-MM"\r
+       $currDay = Get-Date -format "yyyy-MM-dd"\r
 \r
 \r
-Write-Host $currMonth\r
+       Write-Host $currMonth\r
 \r
 \r
-$backupTarget = $backupDir + "\" + $currMonth\r
-$backupTargetFull = $backupTarget + "\" + "Full"\r
+       $backupTarget = $backupDir + "\" + $currMonth\r
+       $backupTargetFull = $backupTarget + "\" + "Full"\r
 \r
 \r
-$backupTargetDiff = $backupTarget + "\" + "Diff-" + $currDay\r
+       $backupTargetDiff = $backupTarget + "\" + "Diff-" + $currDay\r
 \r
 \r
-Write-Host $backupTarget\r
-\r
-$isDiff = $False\r
+       Write-Host $backupTarget\r
 \r
 \r
-if((Test-Path $backupTarget) -and (Test-Path $backupTargetFull) -and (Test-Path "$backupTargetFull\*.hsh")) {\r
-       Write-Host "Differential backup"\r
-       \r
-       $isDiff = $True\r
-       \r
-       if(!(Test-Path $backupTargetDiff)) {\r
-               Write-Host "Creating directory $backupTargetDiff"\r
-               \r
-               try {\r
-                       New-Item -ItemType directory -Path $backupTargetDiff -ErrorAction Stop\r
-               \r
-                       $success = $True\r
-               }\r
-               catch {\r
-                       Write-Host "Could not create directory $backupTargetDiff`: $_.Exception.Message"\r
-                       exit\r
-               }\r
-               \r
-               $dsLogPath = if($dsLogFileToBackup) { "$backupTargetDiff\$dsLogFile" } else { $dsLogFile }\r
-               \r
-               $dsArgs = @($disksToBackup, "--logfile:$dsLogPath", "$backupTargetDiff\`$disk.sna", "-h$backupTargetFull\`$disk.hsh") + $dsAdditionalArgs\r
-               Write-Host $dsPath ($dsArgs -join " ")\r
+       if((Test-Path $backupTarget) -and (Test-Path $backupTargetFull) -and (Test-Path "$backupTargetFull\*.hsh")) {\r
+               Write-Host "Differential backup"\r
                \r
                \r
-               & $dsPath $dsArgs\r
+               $isDiff = $True\r
                \r
                \r
-               if($LastExitCode -ne 0) {\r
-                       Write-Host "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
-                       $errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+               if(!(Test-Path $backupTargetDiff)) {\r
+                       Write-Host "Creating directory $backupTargetDiff"\r
+                       \r
+                       try {\r
+                               New-Item -ItemType directory -Path $backupTargetDiff -ErrorAction Stop\r
+                       }\r
+                       catch {\r
+                               Write-Host "Could not create directory $backupTargetDiff`: $_.Exception.Message"\r
+                               $errorMessages += "Could not create directory $backupTargetDiff`: $_.Exception.Message"\r
+                       }\r
+                       \r
+                       if($errorMessages.Count -eq 0) {\r
+                               $dsLogPath = if($dsLogFileToBackup) { "$backupTargetDiff\$dsLogFile" } else { $dsLogFile }\r
+                               \r
+                               $dsArgs = @($disksToBackup, "--logfile:$dsLogPath", "$backupTargetDiff\`$disk.sna", "-h$backupTargetFull\`$disk.hsh") + $dsAdditionalArgs\r
+                               Write-Host $dsPath ($dsArgs -join " ")\r
+                               \r
+                               $dsCommand = "$dsPath $dsArgs"\r
+                               \r
+                               & $dsPath $dsArgs\r
+                               \r
+                               if($LastExitCode -ne 0) {\r
+                                       Write-Host "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+                                       $errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+                               }\r
+                               else {\r
+                                       $success = $True\r
+                               }\r
+                       }\r
                }\r
                else {\r
                }\r
                else {\r
-                       $success = $True\r
+                       Write-Host "Directory $backupTargetDiff already exists!"\r
+                       $errorMessages += "Directory $backupTargetDiff already exists!"\r
                }\r
        }\r
        else {\r
                }\r
        }\r
        else {\r
-               Write-Host "Directory $backupTargetDiff already exists!"\r
-               $errorMessages += "Directory $backupTargetDiff already exists!"\r
-       }\r
-}\r
-else {\r
-       Write-Host "Full backup"\r
-       \r
-       if(!(Test-Path $backupTarget)) {\r
-               Write-Host "Creating directory $backupTarget"\r
-               New-Item -ItemType directory -Path $backupTarget\r
-       }\r
-       \r
-       if(!(Test-Path $backupTargetFull)) {\r
-               Write-Host "Creating directory $backupTargetFull"\r
-               New-Item -ItemType directory -Path $backupTargetFull\r
-       }\r
-       \r
-       $dsLogPath = if($dsLogFileToBackup) { "$backupTargetFull\$dsLogFile" } else { $dsLogFile }\r
+               Write-Host "Full backup"\r
 \r
 \r
-       $dsArgs = @($disksToBackup, "--logfile:$dsLogPath", "$backupTargetFull\`$disk.sna") + $dsAdditionalArgs\r
-       Write-Host $dsPath ($dsArgs -join " ")\r
-       \r
-       & $dsPath $dsArgs\r
-       \r
-       if($LastExitCode -ne 0) {\r
-               Write-Host "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
-               $errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
-       }\r
-       else {\r
-               $success = $True\r
-       }\r
-}\r
-\r
-if(!$isDiff -and $success -eq $True -and $keepMonths -ge 0) {\r
-       Write-Host "Rotating"\r
-       \r
-       $keepMonthsCount = $keepMonths\r
-       \r
-       Get-ChildItem $backupDir -Directory | Where-Object {($_.Name -ne $currMonth) -and ($_.Name -match "^\d{4,}-\d{2}$")} | Sort-Object -Descending |\r
-       Foreach-Object {\r
-               Write-Host $_ "=>" $_.FullName\r
-               \r
-               if($keepMonthsCount -ge 0) {\r
-                       $keepMonthsCount--\r
+               if(!(Test-Path $backupTarget)) {\r
+                       Write-Host "Creating directory $backupTarget"\r
+                       \r
+                       try {\r
+                               New-Item -ItemType directory -Path $backupTarget -ErrorAction Stop\r
+                       }\r
+                       catch {\r
+                               Write-Host "Could not create directory $backupTarget`: $_.Exception.Message"\r
+                               $errorMessages += "Could not create directory $backupTarget`: $_.Exception.Message"\r
+                       }\r
                }\r
                \r
                }\r
                \r
-               if($keepMonthsCount -eq -1) {\r
-                       Write-Host "Deleting $_"\r
-                       Remove-Item -Recurse -Force $_.FullName\r
+               if($errorMessages.Count -eq 0) {\r
+                       if(!(Test-Path $backupTargetFull)) {\r
+                               Write-Host "Creating directory $backupTargetFull"\r
+                               \r
+                               try {\r
+                                       New-Item -ItemType directory -Path $backupTargetFull -ErrorAction Stop\r
+                               }\r
+                               catch {\r
+                                       Write-Host "Could not create directory $backupTargetFull`: $_.Exception.Message"\r
+                                       $errorMessages += "Could not create directory $backupTargetFull`: $_.Exception.Message"\r
+                               }\r
+                       }\r
+                       \r
+                       if($errorMessages.Count -eq 0) {\r
+                               if($rotateBeforeBackup) {\r
+                                       Rotate-Backup\r
+                               }\r
+                               \r
+                               $dsLogPath = if($dsLogFileToBackup) { "$backupTargetFull\$dsLogFile" } else { $dsLogFile }\r
+\r
+                               $dsArgs = @($disksToBackup, "--logfile:$dsLogPath", "$backupTargetFull\`$disk.sna") + $dsAdditionalArgs\r
+                               Write-Host $dsPath ($dsArgs -join " ")\r
+                               \r
+                               $dsCommand = "$dsPath $dsArgs"\r
+                               \r
+                               & $dsPath $dsArgs\r
+                               \r
+                               if($LastExitCode -ne 0) {\r
+                                       Write-Host "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+                                       $errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+                               }\r
+                               else {\r
+                                       $success = $True\r
+                               }\r
+                               \r
+                               if($rotateBeforeBackup -eq $False -and $success -eq $True) {\r
+                                       Rotate-Backup\r
+                               }\r
+                       }\r
                }\r
        }\r
 }\r
                }\r
        }\r
 }\r
@@ -237,7 +279,16 @@ if($smbConnected) {
 }\r
 \r
 if($emailOnError -and $errorMessages.Count -gt 0) {\r
 }\r
 \r
 if($emailOnError -and $errorMessages.Count -gt 0) {\r
-       Send-Email ("Error:`n"+($errorMessages -join "`n"))\r
+       $emailBody  = "This is DSMonRot on $env:computername, started at $startTime.`n"\r
+       $emailBody += "An error occured while performing a backup. Below are the error messages and some status information.`n`n"\r
+       $emailBody += "Backup directory:       $backupDir`n"\r
+       $emailBody += "Differential backup:    $isDiff`n"\r
+       $emailBody += "Backup successful:      $success`n"\r
+       $emailBody += "Drive Snapshot command: $dsCommand`n`n"\r
+       $emailBody += ($errorMessages -join "`n")\r
+\r
+       Send-Email ($emailBody)\r
 }\r
 \r
 }\r
 \r
-Write-Host "Ended at" (Get-Date -format "yyyy-MM-dd HH:mm:ss")
\ No newline at end of file
+$endTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"\r
+Write-Host "Ended at $endTime"
\ No newline at end of file
Script for rotating Drive Snapshot backups monthly

patrick-canterino.de