Power Systems and AIX and anything else in the domain of Power
I recently encountered issues with PowerVC 2.1.1 when attempting to communicate to HMC managed hosts. When attempting to deallocate or allocate storage that was allocated that were allocated using vSCSI the state of the task would remain in attaching/detaching state indefinitely within PowerVC. To troubleshoot the first step I always Read more…
The installation process with PowerVC 2.1 has significantly changed compared to previous versions of PowerVC. The new installation process includes a step to install PowerVC opsmgr which facilitates the install of PowerVC using ansible playbooks that it comes packaged with. When attempting to install (and follow IBM infocenter documentation) on Read more…
So recently I encountered an issue between communications on Novalink and the VIOS it managed. After VIOS being updated to VIOS 2.2.6.51 we noticed a few errors when we ran pvmctl vios list as well as pvmctl sea list. Both commands returned errors which were obscure. Looking through neutron logs Read more…
One of the points of neglect I notice in systems management quite often is that many system administrators do not monitor the actual utilization of shared processor pools once they create one mainly due to the difficulty of being able to see the utilization quickly. You can easily generate the Read more…
Edit: Updated based on recent testing using PowerVC 1.4.3.1, Terraform v0.12.9 and terraform-provider-openstack_v1.23.0_x4 So recently I started investigating into using Terraform and its Openstack provider to deploy LPARs on Power Systems via PowerVC. Throughout this process, I ran into a few issues due to limitations in the Openstack provider. Unfortunately, Read more…
One of the major differences when using Novalink in a customers environment is the establishment of ‘co-management’ mode. When an HMC and Novalink system both are connected to a physical system only one of the devices can be master at any time. This is also the case when you have Read more…
Since the introduction of PowerVM Novalink I have been constantly asked for details on what Novalink is and how to perform basic tasks via Novalink. There is extensive documentation around Novalink on IBM’s Infocenter however I thought I’d give a brief breakdown of some of the main points around Novalink Read more…
After a long hiatus from posting, I decided I’d start randomly posting again. Recently, I was asked to migrate a very old AIX host for a customer. The first thing I noticed on this host when I logged in was the following errors appearing when I ran cfgmgr: When you Read more…
Just a random hint for today, if you encounter an issue where when you try to start db2 you receive the following error: The solution to this is simple, just enable aio0 by running: chdev -l aio0 -a autoconfig=available -P command or by running the smitty aio command and enabling via smitty.
Have you ever had an application team tell you they have a requirement to modify a system’s /etc/hosts file? As we all should know, giving sudo vi access is in essence giving a user root access so you should never do so. I had this request come by to me Read more…