IBMi.org – Bart's blog

IBM i and PowerVM features and tools

Category Archives: VIOS

Create an LPAR with specific WWPNs

By the command below an LPAR can be created with specific WWPNs, of course if you use NPIV adapters. It can be useful for LPARS migration between servers. It is extremely dangerous command, therefore it should be used only by people who knows what is for. Read more of this post

How to create SEA without touching VIOS

In this post I will describe how to create a Shared Ethernet Adapter (SEA) from the new HMC Enhanced GUI interface where no single command in VIOS command line is required. Read more of this post

My few words about HMC Enhanced + interface

Those of you who run recent hardware, probably noticed the new HMC interface called Enhanced+ GUI available since the HMC Firmware 8.8.1 SP1. In this post I would like to share my point of view and give some advice for people who would like to use it. Read more of this post

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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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

How to restrict usage of ssh keys for specific hosts only.

In this post I would like to show you how to restrict a ssh connection for a specific host only.

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viosvrcmd – the backdoor to the PHyp?

The title is provocative, but if we agree that Virtual I/O Server is part of the POWER Hypervisor it’s absolutely true. The command viosvrcmd is a HMC command which allows to perform any non-interactive VIO commands by a HMC user which has the taskrole authority – ‘VirtualIOServerCommand’ and visibility to a VIOS LPAR without be prompting for VIOS user and password.

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Live Partition Mobility on IBM i – step by step

It’s pretty new feature on IBM i, for AIX its availably since 2007. In VMware world its called VMotion. In my opinion it is still not very popular. Software vendors must still adopt their software for seamless migrations. But IBM gave us a technology which works very well.

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VIOS commands from IBM i point of view

Many IBM i administrators do afraid a VIOS shell. Yes, its different, completely different what we know from IBM i interface. In this post I want to show you a few commands which you know from a ‘green screen’ against  its equivalent in a VIOS shell.

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