#qcow2
Borrowing a VLAN for Windows Tools That Need the Same L2
Many manufacturers' device discovery tools use broadcasts that cannot cross L3, so connecting over a VPN still leaves devices invisible. A solution that leaves switch ports alone is to put a small Windows VM on Proxmox with its interface directly in that VLAN, with pitfalls around vlan-aware bridges, a full thin pool breaking other VMs, and virtio leaving Windows without a network adapter after installation.
Using Claude to Upgrade Proxmox 8 to 9 and Rebuild Windows VMs
A real case using VS Code + Claude to upgrade an entire Proxmox cluster from 8 to 9, then delete and rebuild all Windows VMs for VDI without ever SSHing into a host myself. I have laid out the commands and scripts Claude generated during the actual work as steps that a person or AI can read and run again.
qcow2 or ZFS — Why I Switched After 12 Years on the Same Server
The reasons behind my storage choices for a Proxmox server that has run for 12 years without a reinstall — why I chose qcow2 in 2014, why I only moved to ZFS in 2026, and what actually changed the calculus.
Moving DA from CentOS 7 to Debian 12, Part 4 — Cutover and 17 Issues
The actual cutover, where the near-0 downtime plan fell apart because of the DA Legacy license and slow qcow2 reads, ended with 1 hour of downtime and 17 issues in quick succession after the switch — critical web stack outages, medium issues affecting subsets of services, and minor debugging notes.