Lessons of a Datacenter Administrator
Volumes are the containers of data in a NetApp storage system. They are “stored” on aggregates, accessed via Storage Virtual Machines, and are the point-of-application for many of the features of Data ONTAP. Let’s look at what we can do with volumes leveraging the PowerShell Toolkit:
This post is a continuation of the series that I started with aggregates. FlexVols are created inside of an aggregate and are the logical assignment of the aggregate’s capacity to sub-containers. Think of a FlexVol as a folder on a file system with a quota applied to it…while that isn’t technically true, it get’s the gist across.
FlexVols are the data containers from which CIFS/NFS data (including virtual machines) is served, and/or LUNs are hosted from. They are the functional level for which many features are applied, such as deduplication, and provide logical separation for data sets. From a security point of view, no data in one volume is available from another, and even though the disks are shared, there are no shared blocks between volumes (even with deduplication).
Clustered Data ONTAP introduced the ability to move volumes between nodes in the cluster. I won’t preach about the benefits of cDOT, but there are many and they far outweigh the added complexity. This series is meant to stay focused on the data container settings, which are the same between 7-Mode and clustered Data ONTAP.
Before we begin, I want to note that TR-3749 and TR-4068 should always be the primary reference and guide when deploying VMware using NetApp storage.
Read moreAn Exploration of FlexVols that Underlay VMware Datastores
I had some free time yesterday morning as I couldn’t sleep after the long weekend. I used the time to dig into into the DataOnTap PowerShell Toolkit. I started with an easy port of one of Andrews performance monitoring scripts. I won’t go into as it’s very straight forward, but I will say so far I am very pleased with the DataOnTAP toolkit.
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<span style='color:#006400'><# .SYNOPSIS Get the different protocol latencies for a specified volume. .DESCRIPTION Get the different protocol latencies for a specified volume. .PARAMETER Volume Volume to retrieve the latency. .PARAMETER Protocol Protocol to collect latency for valid values are 'all','nfs','cifs','san','fcp','iscsi' .PARAMETER Interval The interval between iterations in seconds, default is 15 seconds .PARAMETER Count the number of iterations to execute, default is infinant .PARAMETER Controller NetApp Controller to query. .EXAMPLE .Get-NaVolumeLatency.ps1 -Volume vol0 Get the average latency for all protocols on vol0 .EXAMPLE Get-NaVol | .Get-NaVolumeLatency.ps1 -Interval 5 -count 5 | ft Get the average latency for all protocols, all volumes, 5 samples, 5 seconds apart. .EXAMPLE .Get-NaVolumeLatency.ps1 -Volume vol0 -protocol nfs Get the NFS latency for vol0 #></span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>cmdletBinding</span><span style='color:#000000'>(</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#00008b'>Param</span><span style='color:#000000'>(</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>Parameter</span><span style='color:#000000'>(</span><span style='color:#000000'>Mandatory</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$true</span><span style='color:#a9a9a9'>,</span> <span style='color:#000000'>HelpMessage</span><span style='color:#a9a9a9'>=</span><span style='color:#8b0000'>"Volume name to retrieve latency counters from."</span><span style='color:#a9a9a9'>,</span> <span style='color:#000000'>ValueFromPipelineByPropertyName</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$true</span><span style='color:#a9a9a9'>,</span> <span style='color:#000000'>ValueFromPipeLine</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$true</span> <span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>Alias</span><span style='color:#000000'>(</span><span style='color:#8b0000'>"Name"</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#008080'>[string]</span> <span style='color:#ff4500'>$Volume</span> <span style='color:#a9a9a9'>,</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>Parameter</span><span style='color:#000000'>(</span><span style='color:#000000'>Mandatory</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$false</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>ValidateSet</span><span style='color:#000000'>(</span><span style='color:#8b0000'>'all'</span><span style='color:#a9a9a9'>,</span><span style='color:#8b0000'>'nfs'</span><span style='color:#a9a9a9'>,</span><span style='color:#8b0000'>'cifs'</span><span style='color:#a9a9a9'>,</span><span style='color:#8b0000'>'san'</span><span style='color:#a9a9a9'>,</span><span style='color:#8b0000'>'fcp'</span><span style='color:#a9a9a9'>,</span><span style='color:#8b0000'>'iscsi'</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#008080'>[string]</span> <span style='color:#ff4500'>$Protocol</span><span style='color:#a9a9a9'>=</span><span style='color:#8b0000'>'all'</span> <span style='color:#a9a9a9'>,</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>Parameter</span><span style='color:#000000'>(</span><span style='color:#000000'>Mandatory</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$false</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#008080'>[int]</span> <span style='color:#ff4500'>$Interval</span><span style='color:#a9a9a9'>=</span><span style='color:#800080'>15</span> <span style='color:#a9a9a9'>,</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>Parameter</span><span style='color:#000000'>(</span><span style='color:#000000'>Mandatory</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$false</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#008080'>[string]</span> <span style='color:#ff4500'>$count</span> <span style='color:#a9a9a9'>,</span> <span style='color:#a9a9a9'>[</span><span style='color:#add8e6'>Parameter</span><span style='color:#000000'>(</span><span style='color:#000000'>Mandatory</span><span style='color:#a9a9a9'>=</span><span style='color:#ff4500'>$false</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>]</span> <span style='color:#008080'>[NetApp.Ontapi.Filer.NaController]</span> <span style='color:#ff4500'>$Controller</span><span style='color:#a9a9a9'>=</span><span style='color:#000000'>(</span><span style='color:#ff4500'>$CurrentNaController</span><span style='color:#000000'>)</span> <span style='color:#000000'>)</span> <span style='color:#00008b'>Begin</span> <span style='color:#000000'>{</span> <span style='color:#00008b'>IF</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$Protocol</span> <span style='color:#a9a9a9'>-eq</span> <span style='color:#8b0000'>'all'</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$Counters</span> <span style='color:#a9a9a9'>=</span> <span style='color:#000000'>@(</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>'read_latency'</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#a9a9a9'>,</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>'write_latency'</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#a9a9a9'>,</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>'other_latency'</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#a9a9a9'>,</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>'avg_latency'</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#000000'>)</span> <span style='color:#000000'>}</span> <span style='color:#00008b'>Else</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$Counters</span> <span style='color:#a9a9a9'>=</span> <span style='color:#000000'>@(</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>"$($Protocol.ToLower())_read_latency"</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#a9a9a9'>,</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>"$($Protocol.ToLower())_write_latency"</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#a9a9a9'>,</span> <span style='color:#000000'>@{</span> <span style='color:#000000'>Counter</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>"$($Protocol.ToLower())_other_latency"</span> <span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>''</span> <span style='color:#000000'>}</span> <span style='color:#000000'>)</span> <span style='color:#000000'>}</span> <span style='color:#00008b'>foreach</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$c</span> <span style='color:#00008b'>in</span> <span style='color:#ff4500'>$Counters</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#0000ff'>Get-NaPerfCounter</span> <span style='color:#000080'>-Name</span> <span style='color:#8b0000'>'volume'</span> <span style='color:#000080'>-Controller</span> <span style='color:#ff4500'>$Controller</span> <span style='color:#a9a9a9'>|</span> <span style='color:#0000ff'>Where-Object</span> <span style='color:#000000'>{</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>name</span> <span style='color:#a9a9a9'>-eq</span> <span style='color:#ff4500'>$c</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Counter</span><span style='color:#000000'>}</span> <span style='color:#a9a9a9'>|</span> <span style='color:#0000ff'>ForEach-Object</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$c</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span> <span style='color:#a9a9a9'>=</span> <span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>BaseCounter</span> <span style='color:#ff4500'>$c</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>unit</span> <span style='color:#a9a9a9'>=</span> <span style='color:#00008b'>switch</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>unit</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#8b0000'>"microsec"</span> <span style='color:#000000'>{</span><span style='color:#800080'>10000</span><span style='color:#000000'>}</span> <span style='color:#8b0000'>"millisec"</span> <span style='color:#000000'>{</span><span style='color:#800080'>1</span><span style='color:#000000'>}</span> <span style='color:#000000'>}</span> <span style='color:#000000'>}</span> <span style='color:#000000'>}</span> <span style='color:#000000'>}</span> <span style='color:#00008b'>Process</span> <span style='color:#000000'>{</span> <span style='color:#006400'># Check if volume exists.</span> <span style='color:#00008b'>if</span> <span style='color:#000000'>(</span><span style='color:#a9a9a9'>-Not</span> <span style='color:#000000'>(</span><span style='color:#000000'>(</span><span style='color:#0000ff'>get-navol</span> <span style='color:#000080'>-Controller</span> <span style='color:#ff4500'>$Controller</span><span style='color:#a9a9a9'>|</span><span style='color:#0000ff'>select</span> <span style='color:#000080'>-ExpandProperty</span> <span style='color:#8a2be2'>Name</span><span style='color:#000000'>)</span> <span style='color:#a9a9a9'>-contains</span> <span style='color:#ff4500'>$Volume</span><span style='color:#000000'>)</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#0000ff'>Write-Warning</span> <span style='color:#8b0000'>"$volume doesn't exist!"</span> <span style='color:#00008b'>break</span><span style='color:#000000'>;</span> <span style='color:#000000'>}</span> <span style='color:#ff4500'>$iteration</span> <span style='color:#a9a9a9'>=</span> <span style='color:#800080'>0</span> <span style='color:#ff4500'>$first</span> <span style='color:#a9a9a9'>=</span> <span style='color:#ff4500'>$null</span> <span style='color:#006400'>#loop untill we're done or Cntr ^c </span> <span style='color:#00008b'>while</span> <span style='color:#000000'>(</span><span style='color:#000000'>(</span><span style='color:#a9a9a9'>!</span><span style='color:#ff4500'>$Count</span><span style='color:#000000'>)</span> <span style='color:#a9a9a9'>-or</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$iteration</span> <span style='color:#a9a9a9'>-le</span> <span style='color:#ff4500'>$count</span><span style='color:#000000'>)</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$second</span> <span style='color:#a9a9a9'>=</span> <span style='color:#0000ff'>New-Object</span> <span style='color:#8a2be2'>Collections.HashTable</span> <span style='color:#0000ff'>Get-NaPerfData</span> <span style='color:#000080'>-Name</span> <span style='color:#8a2be2'>volume</span> <span style='color:#000000'>` </span> <span style='color:#000080'>-Instances</span> <span style='color:#ff4500'>$Volume</span> <span style='color:#000000'>` </span> <span style='color:#000080'>-Controller</span> <span style='color:#ff4500'>$Controller</span> <span style='color:#000000'>` </span> <span style='color:#000080'>-Counters</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$Counters</span><span style='color:#a9a9a9'>|</span><span style='color:#0000ff'>%</span><span style='color:#000000'>{</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>base</span><span style='color:#a9a9a9'>,</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>counter</span><span style='color:#000000'>}</span><span style='color:#000000'>)</span> <span style='color:#a9a9a9'>|</span> <span style='color:#0000ff'>Select-Object</span> <span style='color:#000080'>-ExpandProperty</span> <span style='color:#8a2be2'>Counters</span> <span style='color:#a9a9a9'>|</span> <span style='color:#0000ff'>ForEach-Object</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$second</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>add</span><span style='color:#000000'>(</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Name</span><span style='color:#a9a9a9'>,</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>value</span><span style='color:#000000'>)</span> <span style='color:#000000'>}</span> <span style='color:#00008b'>if</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$first</span> <span style='color:#a9a9a9'>-and</span> <span style='color:#ff4500'>$second</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$results</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>""</span> <span style='color:#a9a9a9'>|</span> <span style='color:#0000ff'>Select-Object</span> <span style='color:#000080'>-Property</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$Counters</span><span style='color:#a9a9a9'>|</span><span style='color:#0000ff'>%</span><span style='color:#000000'>{</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>base</span><span style='color:#a9a9a9'>,</span><span style='color:#ff4500'>$_</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>counter</span><span style='color:#000000'>}</span><span style='color:#000000'>)</span> <span style='color:#00008b'>foreach</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$v</span> <span style='color:#00008b'>in</span> <span style='color:#ff4500'>$Counters</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#00008b'>IF</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$second</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span><span style='color:#a9a9a9'>]</span> <span style='color:#a9a9a9'>-gt</span> <span style='color:#ff4500'>$first</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span><span style='color:#a9a9a9'>]</span><span style='color:#000000'>)</span> <span style='color:#000000'>{</span> <span style='color:#006400'>#calculate the average over our interval</span> <span style='color:#ff4500'>$avg</span> <span style='color:#a9a9a9'>=</span> <span style='color:#000000'>(</span><span style='color:#ff4500'>$second</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Counter</span><span style='color:#a9a9a9'>]</span> <span style='color:#a9a9a9'>-</span> <span style='color:#ff4500'>$first</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Counter</span><span style='color:#a9a9a9'>]</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>/</span><span style='color:#000000'>(</span><span style='color:#ff4500'>$second</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span><span style='color:#a9a9a9'>]</span> <span style='color:#a9a9a9'>-</span> <span style='color:#ff4500'>$first</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span><span style='color:#a9a9a9'>]</span><span style='color:#000000'>)</span> <span style='color:#006400'>#conver to ms</span> <span style='color:#ff4500'>$results</span><span style='color:#a9a9a9'>.</span><span style='color:#8b0000'>"$($v.Base)"</span> <span style='color:#a9a9a9'>=</span> <span style='color:#008080'>[math]</span><span style='color:#a9a9a9'>::</span><span style='color:#000000'>Round</span><span style='color:#000000'>(</span><span style='color:#000000'>(</span><span style='color:#000000'>(</span><span style='color:#ff4500'>$second</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span><span style='color:#a9a9a9'>]</span> <span style='color:#a9a9a9'>-</span> <span style='color:#ff4500'>$first</span><span style='color:#a9a9a9'>[</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>Base</span><span style='color:#a9a9a9'>]</span><span style='color:#000000'>)</span><span style='color:#a9a9a9'>/</span><span style='color:#ff4500'>$Interval</span><span style='color:#000000'>)</span><span style='color:#000000'>)</span> <span style='color:#ff4500'>$results</span><span style='color:#a9a9a9'>.</span><span style='color:#8b0000'>"$($v.Counter)"</span> <span style='color:#a9a9a9'>=</span> <span style='color:#000000'>(</span><span style='color:#8b0000'>"{0} ms"</span> <span style='color:#a9a9a9'>-f</span> <span style='color:#008080'>[math]</span><span style='color:#a9a9a9'>::</span><span style='color:#000000'>Round</span><span style='color:#000000'>(</span><span style='color:#ff4500'>$avg</span><span style='color:#a9a9a9'>/</span><span style='color:#ff4500'>$v</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>unit</span><span style='color:#000000'>)</span><span style='color:#000000'>)</span> <span style='color:#000000'>}</span> <span style='color:#00008b'>Else</span> <span style='color:#000000'>{</span> <span style='color:#ff4500'>$results</span><span style='color:#a9a9a9'>.</span><span style='color:#8b0000'>"$($v.Base)"</span> <span style='color:#a9a9a9'>=</span> <span style='color:#800080'>0</span> <span style='color:#ff4500'>$results</span><span style='color:#a9a9a9'>.</span><span style='color:#8b0000'>"$($v.Counter)"</span> <span style='color:#a9a9a9'>=</span> <span style='color:#8b0000'>"0 ms"</span> <span style='color:#000000'>}</span> <span style='color:#000000'>}</span> <span style='color:#0000ff'>Write-Output</span> <span style='color:#ff4500'>$results</span><span style='color:#a9a9a9'>|</span> <span style='color:#0000ff'>Add-Member</span> <span style='color:#8a2be2'>NoteProperty</span> <span style='color:#8b0000'>'Volume'</span> <span style='color:#ff4500'>$Volume</span> <span style='color:#000080'>-PassThru</span> <span style='color:#000000'>}</span> <span style='color:#0000ff'>Start-Sleep</span> <span style='color:#000080'>-Seconds</span> <span style='color:#ff4500'>$Interval</span> <span style='color:#ff4500'>$first</span> <span style='color:#a9a9a9'>=</span> <span style='color:#ff4500'>$second</span><span style='color:#a9a9a9'>.</span><span style='color:#000000'>clone</span><span style='color:#000000'>(</span><span style='color:#000000'>)</span> <span style='color:#ff4500'>$iteration</span><span style='color:#a9a9a9'>++</span> <span style='color:#000000'>}</span> <span style='color:#000000'>}</span> |
~Glenn