Author: Ryan Parker

I am former captain of the Cyber Defense team form Cal State San Bernardino. I also have a side job helping small to medium business with anything technology, including but not limited to servers, networking, and end user devices. One of my hobbies is building out infrastructures for myself, friends, and clients. I current maintain a VMware ESXi cluster with about 280GB of RAM, with a 10Gbit network as backbone.

libvirt error: symbol lookup error: /usr/lib/ undefined symbol: gbm_bo_unmap

I encountered the following error after installing the AMDGPU Pro drivers on my Arch Linux machine: error: internal error: process exited while connecting to monitor: /usr/bin/qemu-system-x86_64: symbol lookup error: /usr/lib/ undefined symbol: gbm_bo_unmap The error is caused because the thing it is looking up does not exist. Luckily the fix is easy.   Add the
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Useful Bash One-liners

Below is a collection of useful Bash one-liners that we have come across and use semi-often (or at least often enough to not want to lose them). Honestly we mostly made this just in case we need them again and have lost them elsewhere, but hopefully they end up helping some of you as well!
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oVirt: Unlock Virtual Disks

So every now and then, a clone operation will break on oVirt. However, it will often leave the source machine in a locked state, unable to be used. Luckily, the solution is pretty simple. All you need to do is ssh into the oVirt-engine machine and run the following. Unlock all disks /usr/share/ovirt-engine/setup/dbutils/ -t allUnlock
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