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KVM/Proxmox Snapshot Management: Don’t Let the ‘Undo’ Button Become a Data Loss Disaster

By admin June 15, 2026

Managing KVM and Proxmox snapshots is more than just clicking a button. Learn how to use QEMU Guest Agent, handle snapshot chains, and optimize disk performance for 100% data safety.

Fedora

Using Btrfs Snapshots on Fedora: Fast System Backup and Rollback

By admin March 16, 2026

Btrfs snapshots let you back up and roll back your entire Fedora system in under a second using Copy-on-Write. This guide covers creating snapshots manually, automating them with Snapper and the DNF plugin, and the fast rollback process when something breaks after an upgrade.

Virtualization

ZFS Storage for Proxmox VE: Setting Up Pools, Snapshots, and Checksum-Based VM Data Protection

By admin March 15, 2026

ZFS brings block-level data integrity checksums and instantaneous snapshots to Proxmox VE — solving the silent corruption problem that LVM-thin is completely blind to. This guide walks through creating a ZFS pool, configuring compression, automating daily snapshots, and scheduling periodic scrubs to protect your VM data.

Fedora

Configuring Btrfs Subvolumes on Fedora: Optimizing Space and Rapid System Recovery

By admin March 11, 2026

This article provides detailed instructions on configuring and managing Btrfs subvolumes on Fedora. Learn to create and manage snapshots for system rollbacks and optimize disk space, ensuring stability and flexibility for IT workflows.

Virtualization

Creating and Managing Virtual Machines with Proxmox VE: From Installation to Real-World Monitoring

By admin March 7, 2026

A guide to creating and managing virtual machines with Proxmox VE via web UI and CLI — from installation, VM creation, snapshots, and template cloning to monitoring and backups. Includes practical qm commands and a Telegram alert script for VM downtime.

Virtualization

How to Use libvirt to Manage KVM Virtual Machines from the Command Line (virsh)

By admin March 6, 2026

A complete virsh reference — the libvirt CLI tool for managing KVM virtual machines on Linux. Covers creating VMs, snapshots, cloning, monitoring, and debugging frozen VMs in the middle of the night. A practical guide for admins working without a GUI.