# Config\r
\r
# Path to backup directory\r
+# This directory MUST exist, it is not created automatically!\r
[String]$backupDir = "Z:\"\r
-# Keep backup for this amount of months (excluding the current month),\r
-# -1 for indefinite\r
-[Int32]$keepMonths = 2\r
+# Disks to backup, see http://www.drivesnapshot.de/en/commandline.htm\r
+[String]$disksToBackup = "HD1:1"\r
# Path to Drive Snapshot\r
[String]$dsPath = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.exe"\r
+# Keep backups 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 $True and the full backup fails you could\r
+# have NO backup\r
+[Boolean]$rotateBeforeBackup = $False\r
+# Set to $True if you want to allow multiple backups for a day\r
+[Boolean]$multipleDailyBackups = $False\r
# Path to Drive Snapshot log file (specify only the file name if you set\r
# $dsLogFileToBackup to $True)\r
#[String]$dsLogFile = "C:\Users\Patrick\Desktop\DSMonRot\snapshot.log"\r
# Set to $True if you want to put the log file of Drive Snapshot into the same\r
# directory as the backup\r
[Boolean]$dsLogFileToBackup = $True\r
-# Disks to backup, see http://www.drivesnapshot.de/en/commandline.htm\r
-[String]$disksToBackup = "HD1:1"\r
-# Path to DSMonRot log file\r
-[String]$logFile = "C:\Users\Patrick\Desktop\DSMonRot\dsmonrot.log"\r
+# Path to directory where DSMonRot stores the log files\r
+# Every month a new log file is created\r
+[String]$logDir = "$PSScriptRoot\log"\r
+# Keep log files for this amount of months (excluding the current month),\r
+# 0 or less for indefinite\r
+# You should set this to at least the same as $keepMonths\r
+[Int32]$keepLogs = 2\r
\r
# Map network share to this drive letter, comment out if you don't want to use it\r
[String]$smbDrive = "Z"\r
\r
# End of config\r
\r
-$dsAdditionalArgs = @("--UseVSS")\r
+<# \r
+.Synopsis \r
+ Write-Log writes a message to a specified log file with the current time stamp. \r
+.DESCRIPTION \r
+ The Write-Log function is designed to add logging capability to other scripts. \r
+ In addition to writing output and/or verbose you can write to a log file for \r
+ later debugging. \r
+.NOTES \r
+ Created by: Jason Wasser @wasserja \r
+ Modified: 11/24/2015 09:30:19 AM \r
+ \r
+ Changelog: \r
+ * Code simplification and clarification - thanks to @juneb_get_help \r
+ * Added documentation. \r
+ * Renamed LogPath parameter to Path to keep it standard - thanks to @JeffHicks \r
+ * Revised the Force switch to work as it should - thanks to @JeffHicks \r
+ \r
+ To Do: \r
+ * Add error handling if trying to create a log file in a inaccessible location. \r
+ * Add ability to write $Message to $Verbose or $Error pipelines to eliminate \r
+ duplicates. \r
+.PARAMETER Message \r
+ Message is the content that you wish to add to the log file. \r
+.PARAMETER Path \r
+ The path to the log file to which you would like to write. By default the function will \r
+ create the path and file if it does not exist. \r
+.PARAMETER Level \r
+ Specify the criticality of the log information being written to the log (i.e. Error, Warning, Informational) \r
+.PARAMETER NoClobber \r
+ Use NoClobber if you do not wish to overwrite an existing file. \r
+.EXAMPLE \r
+ Write-Log -Message 'Log message' \r
+ Writes the message to c:\Logs\PowerShellLog.log. \r
+.EXAMPLE \r
+ Write-Log -Message 'Restarting Server.' -Path c:\Logs\Scriptoutput.log \r
+ Writes the content to the specified log file and creates the path and file specified. \r
+.EXAMPLE \r
+ Write-Log -Message 'Folder does not exist.' -Path c:\Logs\Script.log -Level Error \r
+ Writes the message to the specified log file as an error message, and writes the message to the error pipeline. \r
+.LINK \r
+ https://gallery.technet.microsoft.com/scriptcenter/Write-Log-PowerShell-999c32d0 \r
+#>\r
+function Write-Log \r
+{ \r
+ [CmdletBinding()] \r
+ Param \r
+ ( \r
+ [Parameter(Mandatory=$true, \r
+ ValueFromPipelineByPropertyName=$true)] \r
+ [ValidateNotNullOrEmpty()] \r
+ [Alias("LogContent")] \r
+ [string]$Message, \r
+ \r
+ [Parameter(Mandatory=$false)] \r
+ [Alias('LogPath')] \r
+ [string]$Path='C:\Logs\PowerShellLog.log', \r
+ \r
+ [Parameter(Mandatory=$false)] \r
+ [ValidateSet("Error","Warn","Info")] \r
+ [string]$Level="Info", \r
+ \r
+ [Parameter(Mandatory=$false)] \r
+ [switch]$NoClobber \r
+ ) \r
+ \r
+ Begin \r
+ { \r
+ # Set VerbosePreference to Continue so that verbose messages are displayed. \r
+ $VerbosePreference = 'Continue' \r
+ } \r
+ Process \r
+ { \r
+ \r
+ # If the file already exists and NoClobber was specified, do not write to the log. \r
+ if ((Test-Path $Path) -AND $NoClobber) { \r
+ Write-Error "Log file $Path already exists, and you specified NoClobber. Either delete the file or specify a different name." \r
+ Return \r
+ } \r
+ \r
+ # If attempting to write to a log file in a folder/path that doesn't exist create the file including the path. \r
+ elseif (!(Test-Path $Path)) { \r
+ Write-Verbose "Creating $Path." \r
+ $NewLogFile = New-Item $Path -Force -ItemType File \r
+ } \r
+ \r
+ else { \r
+ # Nothing to see here yet. \r
+ } \r
+ \r
+ # Format Date for our Log File \r
+ $FormattedDate = Get-Date -Format "yyyy-MM-dd HH:mm:ss" \r
+ \r
+ # Write message to error, warning, or verbose pipeline and specify $LevelText \r
+ switch ($Level) { \r
+ 'Error' { \r
+ Write-Error $Message \r
+ $LevelText = 'ERROR:' \r
+ } \r
+ 'Warn' { \r
+ Write-Warning $Message \r
+ $LevelText = 'WARNING:' \r
+ } \r
+ 'Info' { \r
+ Write-Verbose $Message \r
+ $LevelText = 'INFO:' \r
+ } \r
+ } \r
+ \r
+ # Write log entry to $Path \r
+ "$FormattedDate $LevelText $Message" | Out-File -FilePath $Path -Append \r
+ } \r
+ End \r
+ { \r
+ } \r
+}\r
\r
-# Allow SMTP with SSL and SMTP Auth\r
-# see: http://petermorrissey.blogspot.de/2013/01/sending-smtp-emails-with-powershell.html\r
function Send-Email([String]$body) {\r
- Write-Host "Sending email: $emailToAddress, $body"\r
- \r
try {\r
+ # Allow SMTP with SSL and SMTP Auth\r
+ # see: http://petermorrissey.blogspot.de/2013/01/sending-smtp-emails-with-powershell.html\r
+ \r
$smtp = New-Object System.Net.Mail.SmtpClient($emailMailServer, $emailPort)\r
\r
$smtp.EnableSSL = $emailSSL\r
$smtp.Send($emailFromAddress, $emailToAddress, $emailSubject, $body)\r
}\r
catch {\r
- Write-Host "Could not send email: $_.Exception.Message"\r
+ Write-Log "Could not send email: $_.Exception.Message" -Path $logFile -Level Error\r
}\r
}\r
\r
-Write-Host "Started at" (Get-Date -format "yyyy-MM-dd HH:mm:ss")\r
-\r
-$errorMessages = @()\r
-\r
-$smbConnected = $False\r
-$success = $False\r
-\r
-if($smbDrive) {\r
- Try {\r
- Write-Host "Connecting network drive"\r
+function Rotate-Backup {\r
+ if($keepMonths -lt 0) {\r
+ return\r
+ }\r
+ \r
+ $keepMonthsCount = $keepMonths\r
+ \r
+ Get-ChildItem $backupDir -Directory | Where-Object {($_.Name -ne $currMonth) -and ($_.Name -match "^\d{4,}-\d{2}$")} | Sort-Object -Descending |\r
+ Foreach-Object {\r
+ if($keepMonthsCount -ge 0) {\r
+ $keepMonthsCount--\r
+ }\r
\r
- if($smbUser -and $smbPassword) {\r
- Write-Host "With credentials"\r
- \r
- $secSmbPassword = $smbPassword | ConvertTo-SecureString -asPlainText -Force\r
- $smbCredential = New-Object System.Management.Automation.PSCredential($smbUser, $secSmbPassword)\r
+ if($keepMonthsCount -eq -1) {\r
+ Write-Log "Deleting backup $($_.FullName)" -Path $logFile -Level Info\r
+ Remove-Item -Recurse -Force $_.FullName\r
+ }\r
+ }\r
+}\r
\r
- New-PSDrive -Name $smbDrive -PSProvider "FileSystem" -Root $smbPath -Credential $smbCredential -Persist -ErrorAction Stop\r
+function Rotate-Log {\r
+ if($keepLogs -le 0) {\r
+ return\r
+ }\r
+ \r
+ $keepLogsCount = $keepLogs\r
+ \r
+ Get-ChildItem $logDir -File | Where-Object {($_.Name -ne "$currMonth.log") -and ($_.Name -match "^\d{4,}-\d{2}\.log$")} | Sort-Object -Descending |\r
+ Foreach-Object {\r
+ if($keepLogsCount -ge 0) {\r
+ $keepLogsCount--\r
}\r
- else {\r
- Write-Host "Without credentials"\r
\r
- New-PSDrive -Name $smbDrive -PSProvider "FileSystem" -Root $smbPath -Persist -ErrorAction Stop\r
+ if($keepLogsCount -eq -1) {\r
+ Write-Log "Deleting log file $($_.FullName)" -Path $logFile -Level Info\r
+ Remove-Item -Force $_.FullName\r
}\r
- \r
- $smbConnected = $True\r
- }\r
- Catch {\r
- Write-Host "Could not connect to network drive $smbDrive`: $_.Exception.Message"\r
- exit\r
}\r
}\r
\r
-if(!(Test-Path $backupDir)) {\r
- Write-Host "Directory $backupDir does not exist!"\r
- exit\r
-}\r
+$dsAdditionalArgs = @("--UseVSS")\r
+\r
+$errorMessages = @()\r
+\r
+$smbConnected = $False\r
+$success = $False\r
+$isDiff = $False\r
+$dsCommand = ""\r
\r
$currMonth = Get-Date -format "yyyy-MM"\r
$currDay = Get-Date -format "yyyy-MM-dd"\r
+$currTime = Get-Date -format "HH-mm-ss" # no colon because we need this for a directory name\r
\r
-Write-Host $currMonth\r
-\r
-$backupTarget = $backupDir + "\" + $currMonth\r
-$backupTargetFull = $backupTarget + "\" + "Full"\r
+# Check if the directory for the log files exists and create it if necessary\r
+if(!(Test-Path $logDir)) {\r
+ try {\r
+ New-Item -ItemType directory -Path $logDir -ErrorAction Stop | Out-Null\r
+ }\r
+ catch {\r
+ Write-Error "Could not create log directory $logDir`: $_.Exception.Message"\r
+ $errorMessages += "Could not create log directory $logDir`: $_.Exception.Message"\r
+ }\r
+}\r
\r
-$backupTargetDiff = $backupTarget + "\" + "Diff-" + $currDay\r
+$logFile = "$logDir\$currMonth.log"\r
\r
-Write-Host $backupTarget\r
+# Continue only if the log directory exists or if it was created successfully (no error message added)\r
+if($errorMessages.Count -eq 0) {\r
+ $startTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"\r
+ Write-Log "Started at $startTime" -Path $logFile\r
\r
-$isDiff = $False\r
+ # Connect the network drive if necessary\r
+ if($smbDrive) {\r
+ Write-Log "Connecting network drive $smbDrive to $smbPath" -Path $logFile\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 = $True\r
+ if($smbUser -and $smbPassword) {\r
+ Write-Log "Connecting to network drive with credentials" -Path $logFile\r
+ \r
+ $secSmbPassword = $smbPassword | ConvertTo-SecureString -asPlainText -Force\r
+ $smbCredential = New-Object System.Management.Automation.PSCredential($smbUser, $secSmbPassword)\r
+\r
+ New-PSDrive -Name $smbDrive -PSProvider "FileSystem" -Root $smbPath -Credential $smbCredential -Persist -ErrorAction Stop | Out-Null\r
+ }\r
+ else {\r
+ Write-Log "Connecting to network drive without credentials" -Path $logFile\r
+ \r
+ New-PSDrive -Name $smbDrive -PSProvider "FileSystem" -Root $smbPath -Persist -ErrorAction Stop | Out-Null\r
+ }\r
+ \r
+ $smbConnected = $True\r
}\r
catch {\r
- Write-Host "Could not create directory $backupTargetDiff`: $_.Exception.Message"\r
- exit\r
+ Write-Log "Could not connect to network drive $smbDrive`: $_.Exception.Message" -Path $logFile -Level Error\r
+ $errorMessages += "Could not connect to network drive $smbDrive`: $_.Exception.Message"\r
}\r
+ }\r
+\r
+ # Check if the backup directory exists\r
+ if(!(Test-Path $backupDir)) {\r
+ Write-Log "Directory $backupDir does not exist!" -Path $logFile -Level Error\r
+ $errorMessages += "Directory $backupDir does not exist!"\r
+ }\r
+\r
+ # Continue only if no error message was recorded (i.e. backup directory does not exist)\r
+ if($errorMessages.Count -eq 0) {\r
+ # Compose the backup target directories\r
+ $backupTarget = $backupDir + "\" + $currMonth\r
+ $backupTargetFull = $backupTarget + "\Full"\r
+\r
+ $backupTargetDiff = $backupTarget + "\Diff-" + $currDay\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
- \r
- & $dsPath $dsArgs\r
+ if($multipleDailyBackups) {\r
+ $backupTargetDiff = $backupTargetDiff + "-" + $currTime\r
+ }\r
+\r
+ # Check if the backup target for this month, the directory for the full backup\r
+ # and the hash files exists. In this case we do a differential backup.\r
+ if((Test-Path $backupTarget) -and (Test-Path $backupTargetFull) -and (Test-Path "$backupTargetFull\*.hsh")) {\r
+ # Do a differential backup\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
+ Write-Log "Doing a differential backup" -Path $logFile\r
+ \r
+ $isDiff = $True\r
+ \r
+ if(!(Test-Path $backupTargetDiff)) {\r
+ try {\r
+ New-Item -ItemType directory -Path $backupTargetDiff -ErrorAction Stop | Out-Null\r
+ }\r
+ catch {\r
+ Write-Log "Could not create directory $backupTargetDiff`: $_.Exception.Message" -Path $logFile -Level Error\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
+ $dsCommand = "$dsPath $dsArgs"\r
+ \r
+ Write-Log $dsCommand -Path $logFile\r
+ \r
+ & $dsPath $dsArgs\r
+ \r
+ if($LastExitCode -ne 0) {\r
+ Write-Log "Drive Snapshot failed to backup! Exit code: $LastExitCode" -Path $logFile -Level Error\r
+ $errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+ }\r
+ else {\r
+ Write-Log "Drive Snapshot succeeded!" -Path $logFile\r
+ $success = $True\r
+ }\r
+ }\r
+ }\r
+ else {\r
+ Write-Log "Directory $backupTargetDiff already exists!" -Path $logFile -Level Error\r
+ $errorMessages += "Directory $backupTargetDiff already exists!"\r
+ }\r
}\r
else {\r
- $success = $True\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
+ # Do a full backup\r
+ \r
+ Write-Log "Doing a full backup" -Path $logFile\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
+ if(!(Test-Path $backupTarget)) {\r
+ try {\r
+ New-Item -ItemType directory -Path $backupTarget -ErrorAction Stop | Out-Null\r
+ }\r
+ catch {\r
+ Write-Log "Could not create directory $backupTarget`: $_.Exception.Message" -Path $logFile -Level Error\r
+ $errorMessages += "Could not create directory $backupTarget`: $_.Exception.Message"\r
+ }\r
+ }\r
+ \r
+ if($errorMessages.Count -eq 0) {\r
+ if(!(Test-Path $backupTargetFull)) {\r
+ try {\r
+ New-Item -ItemType directory -Path $backupTargetFull -ErrorAction Stop | Out-Null\r
+ }\r
+ catch {\r
+ Write-Log "Could not create directory $backupTargetFull`: $_.Exception.Message" -Path $logFile -Level Error\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
+ $dsCommand = "$dsPath $dsArgs"\r
+ \r
+ Write-Log $dsCommand -Path $logFile\r
+ \r
+ & $dsPath $dsArgs\r
+ \r
+ if($LastExitCode -ne 0) {\r
+ Write-Log "Drive Snapshot failed to backup! Exit code: $LastExitCode" -Path $logFile -Level Error\r
+ $errorMessages += "Drive Snapshot failed to backup! Exit code: $LastExitCode"\r
+ }\r
+ else {\r
+ Write-Log "Drive Snapshot succeeded!" -Path $logFile\r
+ $success = $True\r
+ }\r
+ \r
+ if($rotateBeforeBackup -eq $False -and $success -eq $True) {\r
+ Rotate-Backup\r
+ }\r
+ }\r
+ }\r
+ }\r
}\r
-}\r
\r
-if(!$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 $_ "=>" $_.FullName\r
+ # Disconnect the network drive if necessary\r
+ if($smbConnected) {\r
+ Write-Log "Disconnecting network drive" -Path $logFile\r
\r
- if($keepMonthsCount -ge 0) {\r
- $keepMonthsCount--\r
+ try {\r
+ Remove-PSDrive $smbDrive -ErrorAction Stop\r
}\r
- \r
- if($keepMonthsCount -eq -1) {\r
- Write-Host "Deleting $_"\r
- Remove-Item -Recurse -Force $_.FullName\r
+ catch {\r
+ Write-Log "Could not disconnect network drive $smbDrive`: $_.Exception.Message" -Path $logFile -Level Error\r
+ $errorMessages += "Could not disconnect network drive $smbDrive`: $_.Exception.Message"\r
}\r
}\r
-}\r
-\r
-if($smbConnected) {\r
- Write-Host "Disconnecting network drive"\r
\r
- try {\r
- Remove-PSDrive $smbDrive -ErrorAction Stop\r
- }\r
- catch {\r
- Write-Host "Could not disconnect network drive $smbDrive`: $_.Exception.Message"\r
- $errorMessages += "Could not disconnect network drive $smbDrive`: $_.Exception.Message"\r
- }\r
+ # Rotate the log files\r
+ Rotate-Log\r
}\r
\r
+# If there was any error message recorded, send a mail if configured\r
if($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 += "Log directory: $logDir`n"\r
+ $emailBody += "Current log file: $logFile`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 $emailBody\r
}\r
\r
-Write-Host "Ended at" (Get-Date -format "yyyy-MM-dd HH:mm:ss")
\ No newline at end of file
+$endTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"\r
+Write-Log "Ended at $endTime" -Path $logFile
\ No newline at end of file
git.p6c8.net / dsmonrot.git / blobdiff