Hi,
here's what I've done...see script below:
function Get-Stat2 {
<#
.SYNOPSIS Retrieve vSphere statistics
.DESCRIPTION The function is an alternative to the Get-Stat cmdlet.
It's primary use is to provide functionality that is missing
from the Get-Stat cmdlet.
.NOTES Author: Luc Dekens
.PARAMETER Entity
Specify the VIObject for which you want to retrieve statistics
This needs to be an SDK object
.PARAMETER Start
Start of the interval for which to retrive statistics
.PARAMETER Finish
End of the interval for which to retrive statistics
.PARAMETER Stat
The identifiers of the metrics to retrieve
.PARAMETER Instance
The instance property of the statistics to retrieve
.PARAMETER Interval
Specify for which interval you want to retrieve statistics.
Allowed values are RT, HI1, HI2, HI3 and HI4
.PARAMETER MaxSamples
The maximum number of samples for each metric
.PARAMETER QueryMetrics
Switch to indicate that the function should return the available
metrics for the Entity specified
.PARAMETER QueryInstances
Switch to indicate that the function should return the valid instances
for a specific Entity and Stat
.EXAMPLE
PS> Get-Stat2 -Entity $vm.Extensiondata -Stat "cpu.usage.average" -Interval "RT"
#>
[CmdletBinding()]
param (
[parameter(Mandatory = $true, ValueFromPipeline = $true)]
[PSObject]$Entity,
[DateTime]$Start,
[DateTime]$Finish,
[String[]]$Stat,
[String]$Instance = "",
[ValidateSet("RT","HI1","HI2","HI3","HI4")]
[String]$Interval = "RT",
[int]$MaxSamples,
[switch]$QueryMetrics,
[switch]$QueryInstances)
# Test if entity is valid
$EntityType = $Entity.GetType().Name
if(!(("HostSystem",
"VirtualMachine",
"ClusterComputeResource",
"Datastore",
"ResourcePool") -contains $EntityType)) {
Throw "-Entity parameters should be of type HostSystem, VirtualMachine, ClusterComputeResource, Datastore or ResourcePool"
}
$perfMgr = Get-View (Get-View ServiceInstance).content.perfManager
# Create performance counter hashtable
$pcTable = New-Object Hashtable
$keyTable = New-Object Hashtable
foreach($pC in $perfMgr.PerfCounter){
if($pC.Level -ne 99){
if(!$pctable.containskey($pC.GroupInfo.Key + "." + $pC.NameInfo.Key + "." + $pC.RollupType)){
$pctable.Add(($pC.GroupInfo.Key + "." + $pC.NameInfo.Key + "." + $pC.RollupType),$pC.Key)
$keyTable.Add($pC.Key, $pC)
}
}
}
# Test for a valid $Interval
if($Interval.ToString().Split(" ").count -gt 1){
Throw "Only 1 interval allowed."
}
$intervalTab = @{"RT"=$null;"HI1"=0;"HI2"=1;"HI3"=2;"HI4"=3}
$dsValidIntervals = "HI2","HI3","HI4"
$intervalIndex = $intervalTab[$Interval]
if($EntityType -ne "datastore"){
if($Interval -eq "RT"){
$numinterval = 20
}
else{
$numinterval = $perfMgr.HistoricalInterval[$intervalIndex].SamplingPeriod
}
}
else{
if($dsValidIntervals -contains $Interval){
$numinterval = $null
if(!$Start){
$Start = (Get-Date).AddSeconds($perfMgr.HistoricalInterval[$intervalIndex].SamplingPeriod - $perfMgr.HistoricalInterval[$intervalIndex].Length)
}
if(!$Finish){
$Finish = Get-Date
}
}
else{
Throw "-Interval parameter $Interval is invalid for datastore metrics."
}
}
# Test if QueryMetrics is given
if($QueryMetrics){
$metrics = $perfMgr.QueryAvailablePerfMetric($Entity.MoRef,$null,$null,$numinterval)
$metricslist = @()
foreach($pmId in $metrics){
$pC = $keyTable[$pmId.CounterId]
$metricslist += New-Object PSObject -Property @{
Group = $pC.GroupInfo.Key
Name = $pC.NameInfo.Key
Rollup = $pC.RollupType
Id = $pC.Key
Level = $pC.Level
Type = $pC.StatsType
Unit = $pC.UnitInfo.Key
}
}
return ($metricslist | Sort-Object -unique -property Group,Name,Rollup)
}
# Test if start is valid
if($Start -ne $null -and $Start -ne ""){
if($Start.gettype().name -ne "DateTime") {
Throw "-Start parameter should be a DateTime value"
}
}
# Test if finish is valid
if($Finish -ne $null -and $Finish -ne ""){
if($Finish.gettype().name -ne "DateTime") {
Throw "-Start parameter should be a DateTime value"
}
}
# Test start-finish interval
if($Start -ne $null -and $Finish -ne $null -and $Start -ge $Finish){
Throw "-Start time should be 'older' than -Finish time."
}
# Test if stat is valid
$unitarray = @()
$InstancesList = @()
foreach($st in $Stat){
if($pcTable[$st] -eq $null){
Throw "-Stat parameter $st is invalid."
}
$pcInfo = $perfMgr.QueryPerfCounter($pcTable[$st])
$unitarray += $pcInfo[0].UnitInfo.Key
$metricId = $perfMgr.QueryAvailablePerfMetric($Entity.MoRef,$null,$null,$numinterval)
# Test if QueryInstances in given
if($QueryInstances){
$mKey = $pcTable[$st]
foreach($metric in $metricId){
if($metric.CounterId -eq $mKey){
$InstancesList += New-Object PSObject -Property @{
Stat = $st
Instance = $metric.Instance
}
}
}
}
else{
# Test if instance is valid
$found = $false
$validInstances = @()
foreach($metric in $metricId){
if($metric.CounterId -eq $pcTable[$st]){
if($metric.Instance -eq "") {$cInstance = '""'} else {$cInstance = $metric.Instance}
$validInstances += $cInstance
if($Instance -eq $metric.Instance){$found = $true}
}
}
if(!$found){
Throw "-Instance parameter invalid for requested stat: $st.`nValid values are: $validInstances"
}
}
}
if($QueryInstances){
return $InstancesList
}
$PQSpec = New-Object VMware.Vim.PerfQuerySpec
$PQSpec.entity = $Entity.MoRef
$PQSpec.Format = "normal"
$PQSpec.IntervalId = $numinterval
$PQSpec.MetricId = @()
foreach($st in $Stat){
$PMId = New-Object VMware.Vim.PerfMetricId
$PMId.counterId = $pcTable[$st]
if($Instance -ne $null){
$PMId.instance = $Instance
}
$PQSpec.MetricId += $PMId
}
$PQSpec.StartTime = $Start
$PQSpec.EndTime = $Finish
if($MaxSamples -eq 0 -or $numinterval -eq 20){
$PQSpec.maxSample = $null
}
else{
$PQSpec.MaxSample = $MaxSamples
}
$Stats = $perfMgr.QueryPerf($PQSpec)
# No data available
if($Stats[0].Value -eq $null) {return $null}
# Extract data to custom object and return as array
$data = @()
for($i = 0; $i -lt $Stats[0].SampleInfo.Count; $i ++ ){
for($j = 0; $j -lt $Stat.Count; $j ++ ){
$data += New-Object PSObject -Property @{
CounterId = $Stats[0].Value[$j].Id.CounterId
CounterName = $Stat[$j]
Instance = $Stats[0].Value[$j].Id.Instance
Timestamp = $Stats[0].SampleInfo[$i].Timestamp
Interval = $Stats[0].SampleInfo[$i].Interval
Value = $Stats[0].Value[$j].Value[$i]
Unit = $unitarray[$j]
Entity = $Entity.Name
EntityId = $Entity.MoRef.ToString()
}
}
}
if($MaxSamples -eq 0){
$data | Sort-Object -Property Timestamp -Descending
}
else{
$data | Sort-Object -Property Timestamp -Descending | select -First $MaxSamples
}
}
$start = Get-Date -Day 27 -Month 11 -Year 2013
$end = get-date -Day 28 -Month 11 -Year 2013
$ds = (Get-Datastore vcloud01).Extensiondata
Get-Stat2 -entity $ds -interval "HI2" -QueryMetrics | ft -AutoSize ## OK
Get-Stat2 -Entity $ds -Stat "datastore.read.average" -Start $start -Finish $end ## This doesn't work! See error message
This error message appear because it expects an "Interval" switch...like "HI2"...but souldn't this be unnecessary as long as I speicfy from/to dates ? Anyway, I've tried both ways, and adding the ""-Interval" doesn't give me any latency numbers... 😕
Error message:
-Interval parameter RT is invalid for datastore metrics.
At C:\users\bok\Documents\04. Kundecaser\Conceptos AS\Visma IT\VMware\get-stats2.ps1:101 char:7
+ Throw "-Interval parameter $Interval is invalid for datastore metrics."
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : OperationStopped: (-Interval param...astore metrics.:String) [], Run
timeException
+ FullyQualifiedErrorId : -Interval parameter RT is invalid for datastore metrics.
Thanks for helping out...really appreciate it!
Bjørn-Ove Kiil
