HMC

Hi,

I have two questions regarding System/LPAR/profiles UUIDs:

•  are they specific to an HMC (i.e. two HMCs managing the same frame use different UUIDs) or stored in the system (i.e. both HMCs get the UUIDs from the system)?
• after an LPM, does the LPAR keep the same UUID, or does it get a new UUID on the destination system?

I'm asking this, because from a CMDB/Inventory point of view it has different workflow/reconciliation implications.

Hi,

•  are they specific to an HMC (i.e. two HMCs managing the same frame use different UUIDs) or stored in the system (i.e. both HMCs get the UUIDs from the system)?

> Lpar UUIDs are unique; and related to the lpar / VM itself; so if you have 2 HMCs connected; both show the same value.  You can check this from HMC CLI with command: lssyscfg -r lpar -m <MyFrame> -Fuuid,name

• after an LPM, does the LPAR keep the same UUID, or does it get a new UUID on the destination system?

> The UUID remains the same in LPM ; and afaik also in SRR (Simplified remote restart). For LKU (Live Update) ; some years back it was so that the new profile had different UUID until the 1st reboot...but I assume that has been changed / fixed also..

We are using UUID as unique identifier in cmdb inventory / mappings as well ;)

Br,

tommi

Hi,

I have two questions regarding System/LPAR/profiles UUIDs:

•  are they specific to an HMC (i.e. two HMCs managing the same frame use different UUIDs) or stored in the system (i.e. both HMCs get the UUIDs from the system)?
• after an LPM, does the LPAR keep the same UUID, or does it get a new UUID on the destination system?

I'm asking this, because from a CMDB/Inventory point of view it has different workflow/reconciliation implications.