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
Technical Posts
A collection of technical guides, tutorials, and reference materials focused on Linux system administration, infrastructure management, and DevOps practices. Topics include ZFS storage management, SSH security and automation, Gentoo Linux configuration, container orchestration with Incus, network administration, and shell scripting techniques.
Browse by topic using the tags below each post, or explore the complete archive chronologically.
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
Cat.which.sh script
February 26, 2026
Quickly view the source code of any script in your PATH with tab completion
Kernel-config-search script
February 23, 2026
A simple script to search your running kernel's configuration for specific options
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