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Verification improvements

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This commit is contained in:
James Pattinson
2025-10-30 13:01:02 +00:00
parent a7737ebe6f
commit fbb8726e2a
1 changed files with 91 additions and 19 deletions
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86
RestoreScript.ps1
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@@ -108,7 +108,7 @@ function Restore-Database {
$fileList = $fullFiles | ForEach-Object { "DISK = '$($_.FullName)'" }
$restoreQuery = "RESTORE DATABASE [$DbName] FROM $($fileList -join ', ') WITH NORECOVERY"
Write-Host "Restoring FULL backup for $DbName..."
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0 -ErrorAction Stop
# Apply DIFF backups after the FULL
if ($dbCatalog.ContainsKey('DIFF')) {
@@ -118,7 +118,7 @@ function Restore-Database {
$fileList = $diffFiles | ForEach-Object { "DISK = '$($_.FullName)'" }
$restoreQuery = "RESTORE DATABASE [$DbName] FROM $($fileList -join ', ') WITH NORECOVERY"
Write-Host "Applying DIFF backup $key for $DbName..."
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0 -ErrorAction Stop
}
}
@@ -130,38 +130,102 @@ function Restore-Database {
$fileList = $logFiles | ForEach-Object { "DISK = '$($_.FullName)'" }
$restoreQuery = "RESTORE LOG [$DbName] FROM $($fileList -join ', ') WITH NORECOVERY"
Write-Host "Applying LOG backup $key for $DbName..."
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0 -ErrorAction Stop
}
}
# Final recovery
$restoreQuery = "RESTORE DATABASE [$DbName] WITH RECOVERY"
Write-Host "Finalizing restore for $DbName..."
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0
Invoke-Sqlcmd -ServerInstance $Instance -Query $restoreQuery -QueryTimeout 0 -ErrorAction Stop
Write-Host "Restore completed for $DbName"
}
# Function to print backup summary
function Print-BackupSummary {
param([string]$DbName, [hashtable]$Headers)
Write-Host "Backup Summary for database: $DbName"
Write-Host "==================================="
# FULL backups
if ($Headers.ContainsKey('FULL')) {
Write-Host "FULL Backups:"
foreach ($item in $Headers['FULL'] | Sort-Object { $_.Key }) {
$header = $item.Header
Write-Host " Date: $($header.BackupFinishDate) | LSN Range: $($header.FirstLSN) - $($header.LastLSN)"
}
}
# DIFF backups
if ($Headers.ContainsKey('DIFF')) {
Write-Host "DIFFERENTIAL Backups:"
foreach ($item in $Headers['DIFF'] | Sort-Object { $_.Key }) {
$header = $item.Header
Write-Host " Date: $($header.BackupFinishDate) | Base LSN: $($header.DifferentialBaseLSN) | LSN Range: $($header.FirstLSN) - $($header.LastLSN)"
}
}
# LOG backups
if ($Headers.ContainsKey('LOG')) {
$logItems = $Headers['LOG'] | Sort-Object { $_.Key }
if ($logItems.Count -gt 0) {
$firstLog = $logItems[0].Header
$lastLog = $logItems[-1].Header
Write-Host "LOG Backups:"
Write-Host " Point-in-Time Range: $($firstLog.BackupStartDate) to $($lastLog.BackupFinishDate)"
Write-Host " LSN Range: $($firstLog.FirstLSN) - $($lastLog.LastLSN)"
# Check for gaps
$gaps = @()
for ($i = 1; $i -lt $logItems.Count; $i++) {
$prevLast = $logItems[$i-1].Header.LastLSN
$currFirst = $logItems[$i].Header.FirstLSN
if ($prevLast -ne $currFirst) {
$gaps += "Gap between $($logItems[$i-1].Key) (LSN $($prevLast)) and $($logItems[$i].Key) (LSN $($currFirst))"
}
}
if ($gaps.Count -gt 0) {
Write-Host " *** MISSING RANGES ***"
foreach ($gap in $gaps) {
Write-Host " $gap"
}
} else {
Write-Host " No gaps detected in LOG sequence"
}
}
}
if (-not ($Headers.ContainsKey('FULL') -or $Headers.ContainsKey('DIFF') -or $Headers.ContainsKey('LOG'))) {
Write-Host "No backup headers retrieved"
}
}
# Function to verify backups
function Verify-Backups {
param([hashtable]$Catalog, [string]$Instance)
foreach ($db in $catalog.Keys | Sort-Object) {
Write-Host "Verifying backups for database: $db"
$headers = @{}
foreach ($type in $catalog[$db].Keys | Sort-Object) {
foreach ($key in $catalog[$db][$type].Keys | Sort-Object) {
$files = $catalog[$db][$type][$key] | Sort-Object { $_.Stripe } | ForEach-Object { $_.File }
$fileList = $files | ForEach-Object { "DISK = '$($_.FullName)'" }
$verifyQuery = "RESTORE VERIFYONLY FROM $($fileList -join ', ')"
Write-Host "Verifying $type backup $key for $db..."
$verified = $false
try {
Invoke-Sqlcmd -ServerInstance $Instance -Query $verifyQuery -QueryTimeout 0
Invoke-Sqlcmd -ServerInstance $Instance -Query $verifyQuery -QueryTimeout 0 -ErrorAction Stop
Write-Host "Verification successful for $type $key"
$verified = $true
} catch {
Write-Host "Verification failed for $type $key : $($_.Exception.Message)"
}
# Get backup header information
# Get backup header information only if verified
if ($verified) {
$header = Get-BackupInfo -Files $files -Instance $Instance
if ($header) {
Write-Host " Backup Details:"
@@ -175,9 +239,17 @@ function Verify-Backups {
if ($header.DifferentialBaseLSN) {
Write-Host " Differential Base LSN: $($header.DifferentialBaseLSN)"
}
# Collect headers for summary
if (-not $headers.ContainsKey($type)) { $headers[$type] = @() }
$headers[$type] += @{ Key = $key; Header = $header }
}
}
}
}
# Print summary
Print-BackupSummary -DbName $db -Headers $headers
Write-Host ""
}
}
@@ -190,7 +262,7 @@ function Get-BackupInfo {
$headerQuery = "RESTORE HEADERONLY FROM $($fileList -join ', ')"
try {
$header = Invoke-Sqlcmd -ServerInstance $Instance -Query $headerQuery -QueryTimeout 0
$header = Invoke-Sqlcmd -ServerInstance $Instance -Query $headerQuery -QueryTimeout 0 -ErrorAction Stop
return $header
} catch {
Write-Warning "Failed to get header for $($Files[0].Name): $($_.Exception.Message)"