The Key Difference Between QEMU and KVM: Understanding Virtualization Solutions

When it comes to virtualization, two popular solutions are often discussed: QEMU and KVM. While both can provide a robust virtualization infrastructure, there's a key difference between them. 'vm linux'

QEMU is a software-based virtualization solution, also known as a type 2 hypervisor. This means that the virtual machine (VM) runs on top of an existing operating system, which can be Windows or Linux. On the other hand, KVM is a hardware-based virtualization solution, specifically designed for the Linux kernel.

GRT Issues with Linux VMs

Recently, we encountered an issue with GRT (Global Recovery Technology), a Symantec backup and recovery solution. We were experiencing problems when backing up Linux VMs through the Hyper-V agent, whereas the same process worked seamlessly with Windows VMs. The credentials were set correctly, DNS entries were in place, and telnet connections to port 10082 and 100102 were successful.

After further investigation, we discovered that KVM, a virtualization infrastructure for the Linux kernel, was at play. This led us to wonder why our Linux machines would go into saved state during backup, whereas Windows VMs did not exhibit this behavior.

Preparing Linux Machines for VMware Horizon 8

When preparing a Linux machine for use as a desktop in a VMware Horizon 8 deployment, certain tasks must be executed. These include configuring the Linux distribution of your choice, such as Red Hat, SUSE, Ubuntu, CentOS, Debian, or CoreOS.

Integration Services and BE Agents

In our failover cluster, all guest machines (both Linux and Windows) have the BE agents installed. We are using Ubuntu 12.04 with a patch for kernels >=3. The Integration services are activated and running during backup. Credentials are set correctly per-VM in the Virtual Machines selection list, and we can browse the file system when directly connecting to the Linux VM.

Azure and Linux Workloads

Did you know that more than 60 percent of customer cores in Azure run Linux workloads? With a wide range of popular Linux distributions available, including Red Hat, SUSE, Ubuntu, CentOS, Debian, and CoreOS, it's no wonder why Linux is so well-represented in cloud computing.

In conclusion, while QEMU and KVM are both virtualization solutions, the key difference lies in their approach. QEMU is a software-based solution, whereas KVM is hardware-based. When backing up Linux VMs through the Hyper-V agent, it's essential to understand the intricacies of KVM and how they may impact backup processes. By taking the necessary steps to prepare your Linux machines for VMware Horizon 8 deployment and configuring Integration services correctly, you can ensure a seamless backup experience.

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