It has been over two years since I blogged about APD handling bug which I discovered, during partial storage outage in my environment. All path down (APD) handling and VMware Component Protection (VMCP) is not working when you have paths physically connected, but they are not able to serve any… Continue reading
I started another round of the ESXi patching recently (because of this), when I experienced an unpleasant issue. Some of my clusters failed to remediate using update manager. Hosts failed to enter maintenance mode with the following message: Current progress of remediation: 0 hosts completed successfully, 0 hosts completed with… Continue reading
Last couple of weeks were definitely busy for the VMware developers. Not only they released vSphere 6.7 U1. They were also busy fixing two critical data corruption bugs: when running VM snapshots on VMFS after disk extends using vSAN 6.6 and later Another important fixed issue is VM escape possibility… Continue reading
Most probably all of you know already, there is a limit in VMware Site Recovery Manager Standard edition, which will allow you to protect up to 75 Virtual Machines. What you may not know (I was surprised even some VMware Pre-Sales guys didn’t), this limit is for a physical facility… Continue reading
If you are using Intel X710,XL710 or X722 adapters in your environment, you may have already noticed, that LLDP (Link LayerDiscovery Protocol) is not working for you. And you are getting following message “Link Layer Discovery Protocol is not available on this physical network adapter” Apparently those cards have their… Continue reading
You may face the situation where you need to run custom commands/scripts while ESXi boot. Although it is not so common situation, as most of the settings done in ESXi are persistent during the reboot, there are some cases. For this purpose there is a file called /etc/rc.local.d/local.sh and you… Continue reading
As most of the folks in the IT, I’ve spent last couple of days researching about famous Spectre and Meltdown attacks and their possible impact to our infrastructure. These security flaws are especially bad, not only because they’ve been here for more than 2 decades, but mitigation comes with significant… Continue reading
Yesterday, we experienced a problem where we couldn’t install ESXi on the one of ours IBM x3650 M4 servers. We suspected it could be a firmware issue as we performed a complete firmware upgrades just before the installation. If you already had your ESXi installed and did the firmware upgrade… Continue reading
Two weeks ago, we started with regular updates of our Flex system servers, including drivers and firmwares. It is good practice to update drivers first so I followed this procedure as usually. Our update list included ESXi driver for CN4022 (QLogic Broadcom BCM57840). Since IBM/Lenovo doesn’t provide VMware drivers for… Continue reading
Today I’m gonna show you, how to be alerted when VM port is being blocked by security policy defined on portgroup or vSwitch level. If you are not aware so far, these settings prevents VM users (or attackers) to change MAC address from the operating system. There are three security… Continue reading
