How do I retrieve host LUN ids using Powershell?

No, I mean PowerShell.

If we cannot find the right Powershell command, I'll be forced to embed uemcli commands into powershell, which is not what I prefer, because I'm dependent on the installed uemcli version as well.

Hi RRR,

Got you now. We don't get asked about the Unity PowerShell module here a lot.

As far as I can see, there is no direct way. I would recommend that you talk to the devs via the GitHub page to request this functionality.

However, you can get the info if you just use the RestAPI docs/guidance. Here is what I mean:

From looking at the GitHub page, they list a way to query resources in a more generic way:

https://github.com/equelin/Unity-Powershell#query-resources

If you then go to the RestAPI reference guides under https:///apidocs/index.html, you can get all the info you need by just using normal RestAPI calls.

An example here would be:

- Get your hosts with: Get-UnityHost

- Get your LUNs with: Get-UnityLUN

- Get or extrapolate the hostLUN ID:

Extrapolate:

The hostLUN ID is a value in the format of "Host_X_sv_xxx_prod" (Host ID combined with the LUN ID). So for example for Hots16 and LUN sv_506, the hostLUN ID would be: Host_16_sv_506_prod

Get:

Get-UnityItem -URI '/api/instances/host/Host_16?fields=hostLUNs&compact=true' -JSON

This will give you all the hostLUN IDs associated with this host (Host_16 in this example).

You can also query by host name here.

You can then get the actual host LUN (hlu) info with something like:

Get-UnityItem -URI '/api/instances/hostLUN/Host_16_sv_506_prod?fields=hlu&compact=true'

Example:

Get-UnityItem -URI '/api/instances/host/Host_16?fields=hostLUNs&compact=true' -JSON

{"content":{"id":"Host_16","hostLUNs":[{"id":"Host_16_sv_506_prod"}]}}

Get-UnityItem -URI '/api/instances/hostLUN/Host_16_sv_506_prod?fields=hlu&compact=true'

...

@{id=Host_16_sv_506_prod; hlu=0}

It's not straight forward, and there is probably a better way of doing this. You have to go through the docs, and have a word with the module devs to see if this can be added (this seems easy to script).

Andre @ Dell EMC

If this answered your question, please remember to mark this thread as resolved/answered, so it can help other users.

Thank you Andre,

we will test this in our environment and I'll mark the answer accordingly.

Hi @RRR,

Did it work?

Did you reach out to the powershell devs to have this added as well?

we ended up using the uemcli commands after all