Hi,
I'm not sure what the issue is but have you tried testing how responsive the native REST API is if the Get-NcSnapshot CmdLet is taking an excessively long time to return results? Here's an example:
Param(
[Parameter(Mandatory = $True, HelpMessage = "The Cluster name or IP Address")]
[String]$Cluster,
[Parameter(Mandatory = $False, HelpMessage = "The Vserver name")]
[String]$Vserver,
[Parameter(Mandatory = $False, HelpMessage = "The Volume name")]
[String]$Volume,
[Parameter(Mandatory = $True, HelpMessage = "The Credential to authenticate to ONTAP")]
[ValidateNotNullOrEmpty()]
[System.Management.Automation.PSCredential]$Credential
)
#'------------------------------------------------------------------------------
Function Get-OntapAuthorization{
[Alias("Get-OntapAuth")]
[CmdletBinding()]
Param(
[Parameter(Mandatory = $True, HelpMessage = "The Credential to authenticate to ONTAP")]
[ValidateNotNullOrEmpty()]
[System.Management.Automation.PSCredential]$Credential
)
#'---------------------------------------------------------------------------
#'Set the authentication header to connect to AIQUM.
#'---------------------------------------------------------------------------
$auth = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($Credential.UserName + ':' + $Credential.GetNetworkCredential().Password))
$headers = @{
"Authorization" = "Basic $auth"
"Accept" = "application/json"
"Content-Type" = "application/json"
}
Return $headers;
}#'End Function Get-UMAuthorization.
#'------------------------------------------------------------------------------
Function Get-OntapVolume{
[CmdletBinding()]
Param(
[Parameter(Mandatory = $True, HelpMessage = "The Cluster name or IP Address")]
[String]$Cluster,
[Parameter(Mandatory = $False, HelpMessage = "The Vserver name")]
[String]$Vserver,
[Parameter(Mandatory = $False, HelpMessage = "The Volume name")]
[String]$Volume,
[Parameter(Mandatory = $True, HelpMessage = "The Credential to authenticate to ONTAP")]
[ValidateNotNullOrEmpty()]
[System.Management.Automation.PSCredential]$Credential
)
#'---------------------------------------------------------------------------
#'Set the headers to authenticate to ONTAP.
#'---------------------------------------------------------------------------
$headers = Get-OntapAuthorization -Credential $Credential
#'---------------------------------------------------------------------------
#'Set the URL.
#'---------------------------------------------------------------------------
[String]$uri = "https://$Cluster/api/storage/volumes?"
[Bool]$query = $False;
[String]$message = $Null
If($Volume){
[String]$uri += "&name=$Volume"
[Bool]$query = $True;
}
If($Vserver){
[String]$uri += "&svm.name=$Vserver"
[Bool]$query = $True;
}
If(-Not($query)){
[String]$uri = $uri.SubString(0, ($uri.Length -1))
}Else{
[String]$uri = $uri.Replace("?&", "?")
}
#'---------------------------------------------------------------------------
#'Get the volumes.
#'---------------------------------------------------------------------------
Try{
$response = Invoke-RestMethod -Uri $uri -Method Get -Headers $headers -ErrorAction Stop
Write-Host $("Enumerated volumes on cluster ""$Cluster"" using URI ""$uri""")
}Catch{
Write-Warning -Message $("Failed enumerating volumes on cluster ""$Cluster"" using URI ""$uri"". Error " + $_.Exception.Message + ". Status Code " + $_.Exception.Response.StatusCode.value__)
}
Return $response;
}#'End Function Get-OntapVolumes.
#'------------------------------------------------------------------------------
Function Get-OntapSnapshot{
[CmdletBinding()]
Param(
[Parameter(Mandatory = $True, HelpMessage = "The Cluster name or IP Address")]
[String]$Cluster,
[Parameter(Mandatory = $True, HelpMessage = "The Volume UUID")]
[String]$VolumeID,
[Parameter(Mandatory = $True, HelpMessage = "The Credential to authenticate to ONTAP")]
[ValidateNotNullOrEmpty()]
[System.Management.Automation.PSCredential]$Credential
)
#'---------------------------------------------------------------------------
#'Set the headers to authenticate to ONTAP.
#'---------------------------------------------------------------------------
$headers = Get-OntapAuthorization -Credential $Credential
#'---------------------------------------------------------------------------
#'Set the URL.
#'---------------------------------------------------------------------------
[String]$uri = "https://$Cluster/api/storage/volumes/$VolumeID/snapshots?fields=volume.name"
#'---------------------------------------------------------------------------
#'Get the Snapshots.
#'---------------------------------------------------------------------------
Try{
$response = Invoke-RestMethod -Uri $uri -Method Get -Headers $headers -ErrorAction Stop
Write-Host $("Enumerated snapshots on cluster ""$Cluster"" using URI ""$uri""")
}Catch{
Write-Warning -Message $("Failed enumerating snapshots on cluster ""$Cluster"" using URI ""$uri"". Error " + $_.Exception.Message + ". Status Code " + $_.Exception.Response.StatusCode.value__)
}
Return $response;
}#'End Function Get-OntapSnapshots.
$processTimer = [System.Diagnostics.Stopwatch]::StartNew()
#'------------------------------------------------------------------------------
#'Set the certificate policy and TLS version.
#'------------------------------------------------------------------------------
Add-Type @"
using System.Net;
using System.Security.Cryptography.X509Certificates;
public class TrustAllCertsPolicy : ICertificatePolicy {
public bool CheckValidationResult(
ServicePoint srvPoint, X509Certificate certificate,
WebRequest request, int certificateProblem) {
return true;
}
}
"@
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]'Tls12'
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
#'------------------------------------------------------------------------------
#'Enumerate the Volumes.
#'------------------------------------------------------------------------------
[String]$command = "Get-OntapVolume -Cluster $Cluster "
If($Vserver){
[String]$command += "-Vserver $Vserver "
}
If($Volume){
[String]$command += "-Volume $Volume "
}
[String]$command += "-Credential `$Credential"
$volumes = Invoke-Expression -Command $command
#'------------------------------------------------------------------------------
#'Enumerate the snapshots on the volumes.
#'------------------------------------------------------------------------------
ForEach($volumeID In $volumes.records.uuid){
$snapshots = Get-OntapSnapshot -Cluster $Cluster -VolumeID $volumeID -Credential $Credential
$snapshots.records | Format-List
}
#'------------------------------------------------------------------------------
#'Display the duration.
#'------------------------------------------------------------------------------
$processTimer.Stop()
$ts = $processTimer.Elapsed
$elapsedTime = "{0:00}:{1:00}:{2:00}.{3:00}" -f $ts.Hours, $ts.Minutes, $ts.Seconds, ($ts.Milliseconds / 10)
Write-Host $("Enumerated Snapshots - Elapsed Time $elapsedTime")
#'------------------------------------------------------------------------------
Usage:
# Get all snapshots on a volume:
PS C:\Scripts\PowerShell\Projects\ONTAP\GetSnapshots> .\GetSnapshots.ps1 -Cluster cluster1 -Vserver svm1_cluster1 -Volume volume_001 -Credential $credential
# Get all snapshots on all volumes on a vserver:
PS C:\Scripts\PowerShell\Projects\ONTAP\GetSnapshots> .\GetSnapshots.ps1 -Cluster cluster1 -Vserver svm1_cluster1 -Credential $credential
# Get all snapshots on all volumes on all vservers on a cluster:
PS C:\Scripts\PowerShell\Projects\ONTAP\GetSnapshots> .\GetSnapshots.ps1 -Cluster cluster1 -Credential $credential
I'll look into it further as I've got some snapshot automation (currently using ZAPI) that will break when migrating to REST by the sounds of it.
Hope this gives you some ideas in the interim.
/Matt
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