first restore script
This commit is contained in:
183
RestoreScript.ps1
Normal file
183
RestoreScript.ps1
Normal file
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param(
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[Parameter(Mandatory=$true)]
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[string]$FolderPath,
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[Parameter(Mandatory=$false)]
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[string]$DatabaseName,
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[Parameter(Mandatory=$true)]
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[ValidateSet("catalog", "restore", "verify")]
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[string]$Action,
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[Parameter(Mandatory=$false)]
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[string]$SqlInstance = "sqlfcsql\TESTINST"
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)
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# Function to catalog backups
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function Catalog-Backups {
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param([string]$Path)
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$backupFiles = Get-ChildItem -Path $Path -Recurse -File | Where-Object { $_.Extension -eq '.bak' -or $_.Extension -eq '.trn' }
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$catalog = @{}
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foreach ($file in $backupFiles) {
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$baseName = $file.BaseName
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$parts = $baseName -split '_'
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if ($parts.Length -lt 4) { continue }
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$dbName = $parts[1]
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$type = $parts[2]
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$dateStr = $parts[3]
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$timeStr = $parts[4]
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$stripe = 0
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if ($parts.Length -gt 5) {
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$stripe = [int]$parts[5]
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}
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$key = "$dateStr$timeStr"
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if (-not $catalog.ContainsKey($dbName)) { $catalog[$dbName] = @{} }
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if (-not $catalog[$dbName].ContainsKey($type)) { $catalog[$dbName][$type] = @{} }
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if (-not $catalog[$dbName][$type].ContainsKey($key)) { $catalog[$dbName][$type][$key] = @() }
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$catalog[$dbName][$type][$key] += @{File = $file; Stripe = $stripe}
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}
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return $catalog
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}
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# Function to report catalog
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function Report-Catalog {
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param([hashtable]$Catalog)
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Write-Host "Database Backups Catalog:"
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Write-Host "========================="
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foreach ($db in $catalog.Keys | Sort-Object) {
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Write-Host "Database: $db"
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foreach ($type in $catalog[$db].Keys | Sort-Object) {
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Write-Host " Type: $type"
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foreach ($key in $catalog[$db][$type].Keys | Sort-Object -Descending) {
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Write-Host " Backup: $key"
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$files = $catalog[$db][$type][$key] | Sort-Object { $_.Stripe }
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foreach ($item in $files) {
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Write-Host " $($item.File.FullName)"
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}
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}
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}
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Write-Host ""
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}
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}
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# Function to restore database
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function Restore-Database {
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param([string]$DbName, [hashtable]$Catalog, [string]$Instance)
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if (-not $catalog.ContainsKey($DbName)) {
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Write-Error "Database $DbName not found in catalog"
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return
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}
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$dbCatalog = $catalog[$DbName]
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# Find the latest FULL backup
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if (-not $dbCatalog.ContainsKey('FULL')) {
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Write-Error "No FULL backup found for database $DbName"
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return
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}
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$latestFullKey = $dbCatalog['FULL'].Keys | Sort-Object -Descending | Select-Object -First 1
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$fullFiles = $dbCatalog['FULL'][$latestFullKey] | Sort-Object { $_.Stripe } | ForEach-Object { $_.File }
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# Restore FULL with NORECOVERY
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$fileList = $fullFiles | ForEach-Object { "DISK = '$($_.FullName)'" }
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$restoreQuery = "RESTORE DATABASE [$DbName] FROM $($fileList -join ', ') WITH NORECOVERY"
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Write-Host "Restoring FULL backup for $DbName..."
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Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
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# Apply DIFF backups after the FULL
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if ($dbCatalog.ContainsKey('DIFF')) {
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$diffKeys = $dbCatalog['DIFF'].Keys | Where-Object { $_ -gt $latestFullKey } | Sort-Object
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foreach ($key in $diffKeys) {
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$diffFiles = $dbCatalog['DIFF'][$key] | Sort-Object { $_.Stripe } | ForEach-Object { $_.File }
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$fileList = $diffFiles | ForEach-Object { "DISK = '$($_.FullName)'" }
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$restoreQuery = "RESTORE DATABASE [$DbName] FROM $($fileList -join ', ') WITH NORECOVERY"
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Write-Host "Applying DIFF backup $key for $DbName..."
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Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
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}
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}
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# Apply LOG backups after the FULL
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if ($dbCatalog.ContainsKey('LOG')) {
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$logKeys = $dbCatalog['LOG'].Keys | Where-Object { $_ -gt $latestFullKey } | Sort-Object
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foreach ($key in $logKeys) {
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$logFiles = $dbCatalog['LOG'][$key] | Sort-Object { $_.Stripe } | ForEach-Object { $_.File }
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$fileList = $logFiles | ForEach-Object { "DISK = '$($_.FullName)'" }
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$restoreQuery = "RESTORE LOG [$DbName] FROM $($fileList -join ', ') WITH NORECOVERY"
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Write-Host "Applying LOG backup $key for $DbName..."
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Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
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}
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}
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# Final recovery
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$restoreQuery = "RESTORE DATABASE [$DbName] WITH RECOVERY"
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Write-Host "Finalizing restore for $DbName..."
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Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
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Write-Host "Restore completed for $DbName"
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}
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# Function to verify backups
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function Verify-Backups {
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param([hashtable]$Catalog, [string]$Instance)
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foreach ($db in $catalog.Keys | Sort-Object) {
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Write-Host "Verifying backups for database: $db"
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foreach ($type in $catalog[$db].Keys | Sort-Object) {
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foreach ($key in $catalog[$db][$type].Keys | Sort-Object) {
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$files = $catalog[$db][$type][$key] | Sort-Object { $_.Stripe } | ForEach-Object { $_.File }
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$fileList = $files | ForEach-Object { "DISK = '$($_.FullName)'" }
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$verifyQuery = "RESTORE VERIFYONLY FROM $($fileList -join ', ')"
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Write-Host "Verifying $type backup $key for $db..."
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try {
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Invoke-Sqlcmd -ServerInstance $Instance -Query $verifyQuery -QueryTimeout 0
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Write-Host "Verification successful for $type $key"
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} catch {
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Write-Host "Verification failed for $type $key : $($_.Exception.Message)"
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}
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}
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}
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Write-Host ""
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}
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}
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# Main script
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if ($Action -eq "catalog") {
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$catalog = Catalog-Backups -Path $FolderPath
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if ($DatabaseName) {
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$filteredCatalog = @{}
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if ($catalog.ContainsKey($DatabaseName)) {
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$filteredCatalog[$DatabaseName] = $catalog[$DatabaseName]
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}
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Report-Catalog -Catalog $filteredCatalog
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} else {
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Report-Catalog -Catalog $catalog
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}
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} elseif ($Action -eq "restore") {
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if (-not $DatabaseName) {
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Write-Error "DatabaseName is required for restore action"
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exit 1
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}
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$catalog = Catalog-Backups -Path $FolderPath
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Restore-Database -DbName $DatabaseName -Catalog $catalog -Instance $SqlInstance
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} elseif ($Action -eq "verify") {
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$catalog = Catalog-Backups -Path $FolderPath
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if ($DatabaseName) {
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$filteredCatalog = @{}
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if ($catalog.ContainsKey($DatabaseName)) {
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$filteredCatalog[$DatabaseName] = $catalog[$DatabaseName]
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}
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} else {
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$filteredCatalog = $catalog
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}
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Verify-Backups -Catalog $filteredCatalog -Instance $SqlInstance
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}
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