Snapshot Cannot Be Restored Due to Subsequent Snapshots
March 13, 2026
Fix "cannot be restored due to subsequent snapshot" errors when rolling back Incus container snapshots by configuring zfs.remove_snapshots
System Administration
Linux system administration guides covering server configuration, user management, security hardening, performance tuning, and infrastructure maintenance. Essential knowledge for managing Linux servers and workstations.
Reduce TTYs
March 10, 2026
Minimize resource usage on headless servers by reducing the number of active TTYs to one
Cleaning Gentoo Kernels
March 7, 2026
Automatically clean up old Gentoo kernel files to free boot partition space using eclean-kernel
Dedicated Server, Public Subnet, and Vswitch on Hetzner
March 4, 2026
Configure Hetzner vswitch with public subnet routing for virtual machines using layer 3 networking instead of layer 2
Hetzner Vswitch/VLAN Configuration
March 1, 2026
Set up Hetzner vswitch with VLAN tagging for static IP management across virtual machines on Gentoo
Get serial numbers for NVMe drives
February 20, 2026
Query NVMe drive serial numbers and test disk performance with hdparm
Clearing Disks in Rescue Environment
February 17, 2026
Clean up RAID arrays and wipe disks when starting fresh in a rescue environment
List kernel drivers in use
February 14, 2026
Find all kernel drivers currently in use by your hardware with lspci
ZFS on Hetzner Rescue
February 11, 2026
Install and use ZFS in Hetzner's rescue environment to access your ZFS pools
Getting System Information
February 8, 2026
Quick commands to get CPU count, memory size, and disk information on a Linux server
Using Hetzner Rescue
February 5, 2026
Quick reference for Hetzner's rescue system with common installimage commands and useful utilities
Prevent host from being added to knownhosts
February 2, 2026
bash alias to bypass knownhosts
Save time with tab
January 26, 2026
Leverage tab and bash completion to be more effective on the Linux command line
Open ssh connection when available
January 19, 2026
bash script to open connection when server is available
Be more efficient with screen
January 12, 2026
Leverage screen to be more effective on the Linux command line
Estimate How Long to Compile Gentoo Package
January 5, 2026
Track Gentoo package compilation progress and estimate time remaining with the genlop utility