Reduce unnecessary delete calls to ARM for storage accounts (#1733)
Co-authored-by: Ben Broderick Phillips <bebroder@microsoft.com>
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Azure SDK Bot
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b68e7a2cce
Коммит
22ba67ae27
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@ -232,104 +232,10 @@ function Remove-WormStorageAccounts() {
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foreach ($group in $groups) {
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Write-Host "========================================="
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$accounts = Get-AzStorageAccount -ResourceGroupName $group.ResourceGroupName
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if ($accounts) {
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foreach ($account in $accounts) {
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if ($WhatIfPreference) {
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Write-Host "What if: Removing $($account.StorageAccountName) in $($account.ResourceGroupName)"
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}
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else {
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Write-Host "Removing $($account.StorageAccountName) in $($account.ResourceGroupName)"
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}
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if (!$accounts) { break }
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$hasContainers = ($account.Kind -ne "FileStorage")
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# If it doesn't have containers then we can skip the explicit clean-up of this storage account
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if (!$hasContainers) { continue }
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$ctx = New-AzStorageContext -StorageAccountName $account.StorageAccountName
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$containers = $ctx | Get-AzStorageContainer
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$blobs = $containers | Get-AzStorageBlob
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$immutableBlobs = $containers `
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| Where-Object { $_.BlobContainerProperties.HasImmutableStorageWithVersioning } `
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| Get-AzStorageBlob
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try {
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foreach ($blob in $immutableBlobs) {
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# We can't edit blobs with customer encryption without using that key
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# so just try to delete them fully instead. It is unlikely they
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# will also have a legal hold enabled.
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if (($blob | Get-Member 'ListBlobProperties') `
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-and $blob.ListBlobProperties.Properties.CustomerProvidedKeySha256) {
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Write-Host "Removing customer encrypted blob: $($blob.Name), account: $($account.StorageAccountName), group: $($group.ResourceGroupName)"
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$blob | Remove-AzStorageBlob -Force
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continue
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}
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if (!($blob | Get-Member 'BlobProperties')) {
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continue
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}
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if ($blob.BlobProperties.LeaseState -eq 'Leased') {
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Write-Host "Breaking blob lease: $($blob.Name), account: $($account.StorageAccountName), group: $($group.ResourceGroupName)"
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$blob.ICloudBlob.BreakLease()
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}
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if ($blob.BlobProperties.HasLegalHold) {
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Write-Host "Removing legal hold - blob: $($blob.Name), account: $($account.StorageAccountName), group: $($group.ResourceGroupName)"
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$blob | Set-AzStorageBlobLegalHold -DisableLegalHold | Out-Null
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}
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}
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} catch {
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Write-Warning "Ensure user has 'Storage Blob Data Owner' RBAC permission on subscription or resource group"
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Write-Error $_
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throw
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}
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# Sometimes we get a 404 blob not found but can still delete containers,
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# and sometimes we must delete the blob if there's a legal hold.
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# Try to remove the blob, but keep running regardless.
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$succeeded = $false
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for ($attempt = 0; $attempt -lt 2; $attempt++) {
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if ($succeeded) {
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break
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}
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try {
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foreach ($blob in $blobs) {
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if ($blob.BlobProperties.ImmutabilityPolicy.PolicyMode) {
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Write-Host "Removing immutability policy - blob: $($blob.Name), account: $($ctx.StorageAccountName), group: $($group.ResourceGroupName)"
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$null = $blob | Remove-AzStorageBlobImmutabilityPolicy
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}
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}
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}
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catch {}
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try {
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foreach ($blob in $blobs) {
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$blob | Remove-AzStorageBlob -Force
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}
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$succeeded = $true
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}
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catch {
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Write-Warning "Failed to remove blobs - account: $($ctx.StorageAccountName), group: $($group.ResourceGroupName)"
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Write-Warning $_
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}
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}
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try {
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# Use AzRm cmdlet as deletion will only work through ARM with the immutability policies defined on the blobs
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$containers | ForEach-Object { Remove-AzRmStorageContainer -Name $_.Name -StorageAccountName $ctx.StorageAccountName -ResourceGroupName $group.ResourceGroupName -Force }
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} catch {
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Write-Warning "Container removal failed. Ignoring the error and trying to delete the storage account."
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Write-Warning $_
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}
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Remove-AzStorageAccount -StorageAccountName $account.StorageAccountName -ResourceGroupName $account.ResourceGroupName -Force
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}
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}
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if ($WhatIfPreference) {
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Write-Host "What if: Removing resource group $($group.ResourceGroupName)"
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}
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else {
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Remove-AzResourceGroup -ResourceGroupName $group.ResourceGroupName -Force -AsJob
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foreach ($account in $accounts) {
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RemoveStorageAccount -Account $account
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}
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}
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}
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@ -401,6 +307,96 @@ function SetStorageNetworkAccessRules([string]$ResourceGroupName, [array]$AllowI
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}
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}
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function RemoveStorageAccount($Account) {
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Write-Host ($WhatIfPreference ? 'What if: ' : '') + "Readying $($Account.StorageAccountName) in $($Account.ResourceGroupName) for deletion"
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# If it doesn't have containers then we can skip the explicit clean-up of this storage account
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if ($Account.Kind -eq "FileStorage") { return }
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$containers = New-AzStorageContext -StorageAccountName $Account.StorageAccountName | Get-AzStorageContainer
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$blobs = $containers | Get-AzStorageBlob
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$deleteNow = @()
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try {
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foreach ($blob in $blobs) {
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$shouldDelete = EnableBlobDeletion -Blob $blob -StorageAccountName $Account.StorageAccountName -ResourceGroupName $Account.ResourceGroupName
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if ($shouldDelete) {
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$deleteNow += $blob
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}
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}
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} catch {
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Write-Warning "Ensure user has 'Storage Blob Data Owner' RBAC permission on subscription or resource group"
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Write-Error $_
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throw
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}
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# Blobs with legal holds or immutability policies must be deleted individually
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# before the container/account can be deleted
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foreach ($blobToDelete in $deleteNow) {
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try {
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$blobToDelete | Remove-AzStorageBlob -Force
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} catch {
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Write-Host "Blob removal failed: $($Blob.Name), account: $($Account.storageAccountName), group: $($Account.ResourceGroupName)"
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Write-Warning "Ignoring the error and trying to delete the storage account"
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Write-Warning $_
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}
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}
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foreach ($container in $containers) {
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if ($container.BlobContainerProperties.HasImmutableStorageWithVersioning) {
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try {
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# Use AzRm cmdlet as deletion will only work through ARM with the immutability policies defined on the blobs
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Remove-AzRmStorageContainer -Name $container.Name -StorageAccountName $Account.StorageAccountName -ResourceGroupName $Account.ResourceGroupName -Force
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#$container | Remove-AzStorageContainer
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} catch {
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Write-Host "Container removal failed: $($container.Name), account: $($Account.storageAccountName), group: $($Account.ResourceGroupName)"
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Write-Warning "Ignoring the error and trying to delete the storage account"
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Write-Warning $_
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}
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}
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}
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if ($containers) {
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Remove-AzStorageAccount -StorageAccountName $Account.StorageAccountName -ResourceGroupName $Account.ResourceGroupName -Force
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}
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}
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function EnableBlobDeletion($Blob, $StorageAccountName, $ResourceGroupName) {
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# Some properties like immutability policies require the blob to be
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# deleted before the container can be deleted
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$forceBlobDeletion = $false
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# We can't edit blobs with customer encryption without using that key
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# so just try to delete them fully instead. It is unlikely they
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# will also have a legal hold enabled.
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if (($Blob | Get-Member 'ListBlobProperties') `
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-and $Blob.ListBlobProperties.Properties.CustomerProvidedKeySha256) {
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return $true
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}
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if (!($Blob | Get-Member 'BlobProperties')) {
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return $false
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}
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if ($Blob.BlobProperties.ImmutabilityPolicy.PolicyMode) {
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Write-Host "Removing immutability policy - blob: $($Blob.Name), account: $StorageAccountName, group: $ResourceGroupName"
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$null = $Blob | Remove-AzStorageBlobImmutabilityPolicy
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$forceBlobDeletion = $true
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}
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if ($Blob.BlobProperties.HasLegalHold) {
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Write-Host "Removing legal hold - blob: $($Blob.Name), account: $StorageAccountName, group: $ResourceGroupName"
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$Blob | Set-AzStorageBlobLegalHold -DisableLegalHold | Out-Null
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$forceBlobDeletion = $true
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}
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if ($Blob.BlobProperties.LeaseState -eq 'Leased') {
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Write-Host "Breaking blob lease: $($Blob.Name), account: $StorageAccountName, group: $ResourceGroupName"
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$Blob.ICloudBlob.BreakLease()
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}
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return $forceBlobDeletion
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}
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function DoesSubnetOverlap([string]$ipOrCidr, [string]$overlapIp) {
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[System.Net.IPAddress]$overlapIpAddress = $overlapIp
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$parsed = $ipOrCidr -split '/'
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