I am working on my PowerShell module for Pure/VMware operations and one of the cmdlets I am writing is for growing a VMFS. When perusing the internet, I could not find a lot of direct information on how to actually do this. There is not a default cmdlet for doing this.
The illustrious Luc Dekens talks about this problem here and even provides a great module for doing this:
If you just need want to run a quick script you can use that. If you want to write it yourself here is a quick overview of what you need to do. I am talking about a specific use case of:
I have a datastore on one extent and that extent exists on a LUN (or device or volume or whatever you want to call it) on an array. That LUN has been grown on the array.
I want to grow the VMFS to use the new capacity and not create a new extent, just grow it.
My last post in this series was about getting a VVol UUID and figuring out what volume on a FlashArray it is. But what about the step before that? If I have a guest OS file system how do I even figure out what VMDK it is?
There is a basic option, which can potentially be used, which is correlating the bus ID and the unit ID of the device in the guest and matching it to what VMware displays for the virtual disks.
But that always felt to me as somewhat inexact. What if you accidentally look at the wrong VM object and then do something to a volume you do not mean to? Or the opposite?
Not ideal. Luckily there is a more exact approach. I will focus this particular post on Windows. I will look at Linux in an upcoming one.
One of the great benefits of vVols is that fact that virtual disks are just volumes on your array. So this means if you want to do some data management with your virtual disks, you just need to work directly on the volume that corresponds to it.
The question is what virtual disk corresponds to what volume on what array?
Well some of that question is very array dependent (are you using Pure Storage or something else). But the first steps are always the same. Let’s start there for the good of the order.
And I wanted to upgrade my whole lab environment to it and I haven’t set up auto-deploy or update manager yet (I plan to, making all of this much easier to manage). So I wrote a quick and dirty PowerCLI script that updates to the latest patch and if the host doesn’t have any VMs on it, puts it into maintenance mode and reboots it. I will reboot the other ones as needed.
Quick post. I updated my PowerShell GUI tool I maintain for VMware and FlashArray management and added some new features. This time mainly around protection group management. Download it from my GitHub page here:
I updated my UNMAP PowerCLI script a month or so ago and improved quite a few things–but I did remove hard-coded variables and replaced it with interactive input. Which is fine for some, but for many it was not.
Note: Move to VMFS-6 in vSphere 6.5 and you don’t have to worry about this UNMAP business anymore 🙂
Essentially, quite a few people want to run it as a scheduled task in Windows, and if it requires input that just isn’t going to work out of the box. So I have created an unattended version of the script. For details read on.
Note: I will continue to update the script (bugs, features, etc.) but will note them on my other blog post about the script here:
This is all very exciting for me, finally able to really start blogging about VVols in earnest. As you may or may not be aware we (Pure Storage) currently have our VVol implementation in beta. So I can finally start digging into some VVol work. Not going to get into implementation details just yet, but instead a quick walkthrough of importing a VVol snapshot with PowerCLI.
First, enjoy a poorly photoshopped Back To the Future reference:
Here is my storage manager for the FlashArray and VMware. Based on PowerCLI, but uses a front end GUI. Enjoy!
NOTICE THIS HAS BEEN DEPRECATED IN FAVOR OF THE POWERSHELL MODULE HERE:
There are a variety of methods of managing VMware objects (VMFS volumes, VMs, VMDKs and RDMs) and the underlying snapshots to recovery or clone them. But often I get asked if I have a PowerShell (PowerCLI) script to do one or all of them. I have a bunch on my GitHub, but I decided a week or so ago to put something a bit more robust together. At first I was making it a standard interactive script, but it morphed into a GUI, using combo-boxes etc:
New script to automatically create hosts groups on FlashArrays based on VMware ESXi clusters. This is a script I’ve had out for awhile but only recently revisited and realized it was way out of date and frankly, not very good. So I trashed most of it and re-wrote it. You can find it here: