A script to allow copying blobs which are currently in use

Azure-Copy-Used-Blob.ps1

[CmdletBinding()]
Param(
    [Parameter(Mandatory=$True)]
    [string]$SrcStorageAccount,

    [Parameter(Mandatory=$True)]
    [string]$SrcStorageKey,

    [Parameter(Mandatory=$True)]
    [string]$SrcContainer,

    [Parameter(Mandatory=$True)]
    [string]$SrcBlob,

    [string]$DstStorageAccount = $SrcStorageAccount,
    [string]$DstStorageKey = $SrcStorageKey,
    [string]$DstContainer = $SrcContainer,
    [string]$DstBlob = $SrcBlob
)


$SrcStorageUri = "http://" + $SrcStorageAccount + ".blob.core.windows.net"

Add-Type -Path "C:\Program Files\Microsoft SDKs\Windows Azure\.NET SDK\v2.0\bin\Microsoft.WindowsAzure.StorageClient.dll"
 
#generate credentials based on the key
$creds = New-Object Microsoft.WindowsAzure.StorageCredentialsAccountAndKey($SrcStorageAccount, $SrcStorageKey)
 
#create an instance of the CloudBlobClient class
$blobClient = New-Object Microsoft.WindowsAzure.StorageClient.CloudBlobClient($SrcStorageUri, $creds)
 
#and grab a reference to our target blob
$blob = $blobClient.GetBlobReference($SrcContainer + "/" + $SrcBlob)

$snapshot = $blob.CreateSnapshot()

$srcContext = New-AzureStorageContext -StorageAccountName $SrcStorageAccount -StorageAccountKey $SrcStorageKey
$destContext = New-AzureStorageContext  -StorageAccountName $DstStorageAccount -StorageAccountKey $DstStorageKey

New-AzureStorageContainer -Name $DstContainer -Context $destContext -ErrorAction SilentlyContinue

$snapshotUri = [Microsoft.WindowsAzure.StorageClient.Protocol.BlobRequest]::Get($snapshot.Uri, 0, $snapshot.SnapshotTime, $null).Address.AbsoluteUri;
$copyBlob = Start-AzureStorageBlobCopy -SrcUri $snapshotUri -SrcContext $srcContext -DestContainer $DstContainer -DestBlob $DstBlob -DestContext $destContext

$copyBlob | Get-AzureStorageBlobCopyState -WaitForComplete
$snapshot.Delete()