IBMi.org – Bart's blog

IBM i and PowerVM features and tools

Category Archives: HMC

Setting CPU/MEM as absolute value from the HMC CLI

From the HMC firmware version 8, it is possible to define absolute values for DLPAR commands in order to change physical, virtual CPUs from the HMC command line. Read more of this post

HMC 8.8.2 and SP1 installation

I would like to bring to attention installation order of fixes for the HMC firmware 8.8.2. If you  install the fixes in incorrect order, you might loose the RMC connection to all AIX/VIOS hosts.

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How to speed up your POWER server with no cost

In my previous post I’ve mentioned about the new HMC feature which can adjust CPU frequency. In this article I want to describe how to speed up the POWER system box, get more performance from the system. It is very easy to overclock the machine.

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How to display the HMC iqyylog.log

In this post I give you a hint how to display a log which is usually used by IBM support to identify a serious hardware error. Such information usually can be found in HMC log called iqyylog. Usually, when you get that kind of hardware error, you involve IBM support. Very likely, they will ask for PE debug data. There is a way how to display the log by yourself. Remember, such information is very technical. But maybe you find it useful.

  • First, you need to create the hscpe account on the HMC (if you haven’t done it). You can find the process here.
  • Log in to the HMC GUI under hscpe account.
  • In the Service Management menu you find three new options available

three_options

If you click on View Management Console Logs, you are going to see the log.

How to install any Operating System on POWER remotely

Since HMC firmware version 7.7.7, IBM added very cool feature, which allows installation of the Virtual I/O Server directly from the HMC. This is very convenient when you get your POWER machine to the new location, and you want to install an operating system, for instance, IBM i or AIX, but you prefer to do it remotely.

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Building multiple LPARs with dedicated I/O from the CLI

Hi,

Nowadays, I’m preparing for huge hardware delivery. I’m about to get dozen of MMD’s. The challenge is to configure them (LPAR profiles, VIOS, etc) as soon as possible. I found the way how to automate creation of multiple VIO/LPAR profiles including I/O configuration for multiple servers without knowing SN of the expansions drawers.

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Monitor CPU, POOL utilization from PHYP cycles on POWER8

One of the most popular post on my blog, is the one about monitoring a CPU by CPU cycles dispatched by a POWER Hypervisor link.

With POWER8 we receive new attributes in lslparutil command.

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SR-IOV technology on POWER – my few words

Finally the announcement day arrived. POWER8 and SR-IOV have been introduced to the world, and I can share my experience from my last residency.

Single Root I/O Virtualization are not new adapters, but this is a new technology, standard, specification. In fact, it uses adapters which are on the market for some time already. Specification allows to get a slice of a physical adapter and assign it an LPAR. This feature requires a proper hardware, firmware, and all elements around it.

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IBM i with VLAN tagged network

Have you ever think to run your IBM i machine with in IEEE 802.1Q standard, and use the capabilities which offers VLAN tagging? You might heard that your AIX, LINUX colleagues already use it for ages, but for IBM i, this technology is still not available. Well, it is possible!  You can trunk multiple VLANs to one physical port, if you configure the POWER Hypervisor to handle this traffic. Read more of this post

Redbook residency – Austin 2014

Few days ago, I came back from IBM in Austin. It was my first time in Austin, homeland of POWER systems, chips, AIX and PowerVM development, but third residency in general. Read more of this post