ajohn24
Contributor
Contributor

Reporting multipath policy

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Hi,

I am using a script to get multipath policy for the hosts. What i just need is a way for it to send me the report once it is completed. The catch is it should report only about those datastores/hosts which are not compliant.

Example: (If we are checking for host which have a path policy set as round robin the report should have all those hosts which are againt this rule -fixed/mru)

$Hosts = Get-Cluster cluster-name | Get-VMHost| Sort Name

ForEach ($VMHost in $Hosts) {

  $ScsiLunsInfo = $VMHost | Get-ScsiLun -LunType disk
    ForEach ($ScsiLun in $ScsiLunsInfo) {
               $PathPolicy =  (Get-ScsiLun -CanonicalName $ScsiLun -VmHost $VMHost).MultipathPolicy

#The logic is required here to display all those hosts which have a path policy of fixed/mru. The CSV file format should have something like "PathPolicy

# of $ScsiLun on $VMHost is $PathPolicy"

               if ($PathPolicy -ne "RoundRobin") {

                         export-csv "C:\somefile.csv"

}}}

Thx,
A

1 Solution

Accepted Solutions
LucD
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Leadership

That's the extra code I meant in my note in the pervious post.

One way of fixing this could be something like this

$Report = @()

$esx = Get-Cluster MyCluster | Get-VMHost| Sort Name 
ForEach
($VMHost in $esx) {     $record = Get-ScsiLun -VmHost $VMHost -LunType disk |
     
where {$_.MultiPathPolicy -ne "RoundRobin"} |
      select @{N="VMHost";E={$VMHost.Name}},CanonicalName,MultiPathPolicy
    if($record){       $Report += $record
    } }
if($Report){   $Report | Export-Csv "C:\somefile.csv" -NoTypeInformation -UseCulture
}

In this case there will be no CSV file created when all of the LUNs have RoundRobin


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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LucD
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Try something like this.

With the Where-clause you can filter out the objects that you want, then collect them in an array and finally export the array to a CSV file.

$Report = @()

$esx = Get-Cluster MyCLuster | Get-VMHost| Sort Name 
ForEach ($VMHost in $esx) {     $Report += Get-ScsiLun -VmHost $VMHost -LunType disk |
     
where {$_.MultiPathPolicy -ne "RoundRobin"} |
     
select @{N="VMHost";E={$VMHost.Name}},CanonicalName,MultiPathPolicy
} $Report | Export-Csv "C:\somefile.csv" -NoTypeInformation -UseCulture

Note that the script will need some extra code if you should stumble upon the case where all your LUNs are using RoundRobin


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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ajohn24
Contributor
Contributor

Thanks Luc for the prompt reply. This is what I was looking for. Only one thing which I want to point is if we run with the condition (check multipath policy fixed) and if in case all the hosts meet the required condition the script returns the following:

"Export-Csv : Cannot bind argument to parameter 'InputObject' because it is null" and that too in large numbers.

Is there a way to suppress it?

Thx,

A

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LucD
Leadership
Leadership

That's the extra code I meant in my note in the pervious post.

One way of fixing this could be something like this

$Report = @()

$esx = Get-Cluster MyCluster | Get-VMHost| Sort Name 
ForEach
($VMHost in $esx) {     $record = Get-ScsiLun -VmHost $VMHost -LunType disk |
     
where {$_.MultiPathPolicy -ne "RoundRobin"} |
      select @{N="VMHost";E={$VMHost.Name}},CanonicalName,MultiPathPolicy
    if($record){       $Report += $record
    } }
if($Report){   $Report | Export-Csv "C:\somefile.csv" -NoTypeInformation -UseCulture
}

In this case there will be no CSV file created when all of the LUNs have RoundRobin


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

View solution in original post

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ajohn24
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Contributor

Awesome...thanks!

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baburaju
Contributor
Contributor

Hi LucD,

I want to know which datastore have mutlipathing in a cluster i.e in my case on 1 hba the device is visible and not other hba. So using a script I want to search such luns which are only mapped to hba 1 and not hba 2.

So please help me on this.

Regards,

Babu Raju.

Vizag.

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baburaju
Contributor
Contributor

Hi Team,

Please Anybody help me on this.

Regards,

Baburaju.

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vmk2014
Expert
Expert

LucD,

Does the script require any changes for VMware 6.5 ? I did try, but no output generates.

thanks

vmk

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LucD
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No, no change required for 6.5.
Do you have an empty CSV file?


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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vmk2014
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Actually, it not generating any file at all. Blank output in screen without any error.

Thanks

vmk

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LucD
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What does this return?

Get-Cluster -PipelineVariable cluster | Get-VMHost -PipelineVariable esx |

Get-ScsiLun -LunType disk |

select @{N='Cluster';E={$cluster.Name}},@{N="VMHost";E={$esx.Name}},

    CanonicalName,MultiPathPolicy


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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vmk2014
Expert
Expert

Yes, it shows output below.

Cluster             VMHost                   CanonicalName                        MultipathPolicy

-------             ------                   -------------                        ---------------

Winds_LNG_Cluster wa-esxl2.espsg.local mpx.vmhba0:C0:T64:L0                           Fixed

Winds_LNG_Cluster wa-esxl2.espsg.local naa.6000144000000010603d786248fb5f2c      RoundRobin

Winds_LNG_Cluster wa-esxl2.espsg.local naa.600014400000001060282d9c8ac23446      RoundRobin

Winds_LNG_Cluster wa-esxl2.espsg.local naa.600508b1001c123eeeb6ffb0c5dddc12           Fixed

Winds_LNG_Cluster wa-esxl1.esosg.local mpx.vmhba0:C0:T64:L0                           Fixed

Winds_LNG_Cluster wa-esxlg1.espsg.local naa.600508b1001cfe2c7b6bda60d0ff2462           Fixed

thanks

vmk

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LucD
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Then you can just pipe the result to a CSV

Get-Cluster -PipelineVariable cluster | Get-VMHost -PipelineVariable esx |

Get-ScsiLun -LunType disk |

select @{N='Cluster';E={$cluster.Name}},@{N="VMHost";E={$esx.Name}},

    CanonicalName,MultiPathPolicy |

Export-Csv -Path .\report.csv -UseCulture -NoTypeInformation


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference