Get-drsrule enhancement

by Grzegorz Kulikowski

I was doing some drs rules today and noticed( after all those years 😉 ) that i get only id’s for vms in output. So i can not see directly which vms for example are set to be together etc…
In order to quickly have the output with the names instead of ids i wrote this tiny enhancement:
[sourcecode language=”powershell”]
get-cluster XXX | Get-DrsRule | select Name, KeepTogether,Enabled, @{N=”VMnames”;E={ $_.Vmids|%{(get-view -id $_).name} } }
[/sourcecode]
*
I got a comment today under this post, so i thought i could just put the ‘normal/better’ version of this, since clearly this one does not make sort of logical sense, i mean of course it works, but it is really ugly because of the foreach of vmids , this is really ‘not the best idea’ to run get-view so many times if one can run it just once.
[sourcecode language=”powershell”]
get-cluster |Get-DrsRule | select Name, KeepTogether,Enabled, @{N=”VMnames”;E={ (get-view -id $_.vmids).name } }
[/sourcecode]

So this is more elegant plus it is actually way faster than the previous one.
They might look really similar to you, but in fact those are 2 different approaches.
The first one does a loop on an array of vmids and each iteration it asks get-view to fetch data.
The latter one is asking get-view just once, as we can pass to it ALL the vm ids. in the old day i would also do a param -property name for the get-view itself but these days (2020) the powercli is so much better optimized compared to 2012… then i dont see even a speed difference.
If the output is not optimized you can always use |ft -autosize at the end of the line.
For each of the virtual machine id i get the vm view and take its name.
You can do get-vm -id or get-view -id. If there is small amount of vms in your rules, that would not affect any performance of this command.
Tiny enhancement but saves some time on checking those ids manually.

Advertisements

You may also like

3 comments

LittleNickey March 20, 2013 - 10:41 am

Awesome!

Reply
Anonymous April 23, 2020 - 10:43 pm

Thank you!

Reply
psvmware April 24, 2020 - 8:20 am

No problem, i modified that 1 line to make it 2020 ready hahaha 😉 since people are still reading this.

Reply

Leave a Reply

Chinese (Simplified)DutchEnglishFrenchGermanHindiPolishRussianSpanish