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Check firmware enabled for LPAR
- Thread starter KPKIND
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I am a bit new to LPAR, just started to work on LPAR servers. I have got this query when I was reading a redbook which said the firmware will show you whether it is enabled for LPAR or not, but did not give the way to check it. We have various systems running LPAR starting from P550 to P595
Majority of AIX ver is AIX 5.2
TIA
Kumar
Majority of AIX ver is AIX 5.2
TIA
Kumar
I do not know of any p5 (520,550,570,575,590,595) firmware that didn't allow DLPAR. With 5.2, you should be able to dlpar full cpu's, ram, and slots.
Check out the following thread to determine your firmware level:
Check out the following thread to determine your firmware level:
On the HMC you can check the properties of your servers: it would state somewhere that a server is DLPAR capable.
But p5 should be DLPAR capable at least (even SPLPAR if AIX5.3). If it doesn't work, then it is more than likely related to hostname resolution or network connectivity problems...
HTH,
p5wizard
But p5 should be DLPAR capable at least (even SPLPAR if AIX5.3). If it doesn't work, then it is more than likely related to hostname resolution or network connectivity problems...
HTH,
p5wizard
LPAR came out for the early p6xx (pre-regatta) machines on AIX 5.1 with recent firmware.
Then later p6xx machines, that supported an HMC, could run AIX 5.1 and LPAR or they could run AIX 5.2 and DLPAR - but they both needed an HMC to support LPAR / DLPAR.
The minimum spec for Dynamic LPAR (DLPAR) is (suitable hardware) AIX 5.2 and an HMC. (The p660 supportd LPAR and AIX 5.2 but does not support an HMC so does not support DLPAR)
The minimum AIX for p5xx machines is AIX 5.2 (so the hardware does support DLPAR but you will need an HMC).
So as long as you have a p5xx and an HMC you can run DLPAR.
Then later p6xx machines, that supported an HMC, could run AIX 5.1 and LPAR or they could run AIX 5.2 and DLPAR - but they both needed an HMC to support LPAR / DLPAR.
The minimum spec for Dynamic LPAR (DLPAR) is (suitable hardware) AIX 5.2 and an HMC. (The p660 supportd LPAR and AIX 5.2 but does not support an HMC so does not support DLPAR)
The minimum AIX for p5xx machines is AIX 5.2 (so the hardware does support DLPAR but you will need an HMC).
So as long as you have a p5xx and an HMC you can run DLPAR.
The easiest way to find out what the System Firmware level and the Service Processor level are is to run> lsmcode
Also, DLPAR requires the unix_mp or unix_64 kernel and will not be enabled without it. Even if your resource allocation is 1 CPU, it still should be running the MP kernel because it is capable of multiple processors. This is not a change that can be made on the fly but will need to be relinked and a reboot. (If anyone needs the specifics, let me know---I've done it enough times....)
If you ssh to the HMC and run> lspartition -dlpar --that will list out all your partitions;Look for Active:<1>, and Dcaps:<0xf> --if either or both are zeros (<0> and/or <0x0>) then you cannot to Dynamic functions for whatever reason. Usually related to communication/network/hostname problems between the RSCT daemons on the HMC and the LPAR partition.
my3cents,
Ken
Also, DLPAR requires the unix_mp or unix_64 kernel and will not be enabled without it. Even if your resource allocation is 1 CPU, it still should be running the MP kernel because it is capable of multiple processors. This is not a change that can be made on the fly but will need to be relinked and a reboot. (If anyone needs the specifics, let me know---I've done it enough times....)
If you ssh to the HMC and run> lspartition -dlpar --that will list out all your partitions;Look for Active:<1>, and Dcaps:<0xf> --if either or both are zeros (<0> and/or <0x0>) then you cannot to Dynamic functions for whatever reason. Usually related to communication/network/hostname problems between the RSCT daemons on the HMC and the LPAR partition.
my3cents,
Ken
These may be of use to you.
Mike
"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."
Mike
"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."
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