troubleshooting

Technical

Proxmox Cores vs Sockets: What the vCPU Settings Mean

Proxmox cores vs sockets explained: how the vCPU settings affect Linux and Windows guests, and why you should usually just use one socket.

NguyenSeptember 19, 20262 min read

Technical

Proxmox as provider: Traefik auto-discovery without an official provider

Get Traefik to discover Proxmox services with a cron job that pulls from the Proxmox API. No official provider needed—just a script and a config.

NguyenSeptember 18, 20262 min read

Technical

Fix Proxmox GPU Passthrough Black Screen on VM Start

Black screen after passing a GPU to a VM? Check VFIO binding, the GPU ROM, and display output in that order. Here's the diagnostic sequence.

NguyenSeptember 18, 20262 min read

Technical

Jellyfin 10.11 performance issues: fix them on Proxmox LXC

Jellyfin 10.11 performance issues are usually the inotify watcher limits or a bad transcode path. Here's the exact fix I use on Proxmox LXC.

NguyenSeptember 17, 20261 min read

Technical

ZFS over iSCSI TrueNAS Scale Proxmox: targetcli setup that actually works

ZFS over iSCSI from Proxmox to TrueNAS SCALE fails because SCALE uses LIO, not istgt. Here's the targetcli config and Proxmox storage plugin settings that

NguyenSeptember 16, 20262 min read

Technical

Got inotify poll request in wrong process – disabling inotify: fix it on Proxmox

Got inotify poll request in wrong process - disabling inotify on Proxmox means a process is watching files with inotify but isn't getting the events.

NguyenSeptember 16, 20263 min read

Technical

Got inotify poll request in wrong process – disabling inotify: what it means in Proxmox

The 'got inotify poll request in wrong process - disabling inotify' message is a Perl Linux::Inotify2 warning from Proxmox's forking daemons.

NguyenSeptember 15, 20262 min read

Technical

Shrink LVM-Thin Proxmox: Safe Methods and Dead Ends

Shrinking an LVM-thin pool on Proxmox isn't directly possible. Here's the safe workaround: create a new smaller pool and move your VMs over.

NguyenSeptember 14, 20262 min read

Technical

How to disable the mouse grab and use local cursor only for VirtViewer?

Disable VirtViewer's mouse grab by adding grab-keyboard=off to the remote-viewer config file. Here's the exact setting for Proxmox VMs.

NguyenSeptember 14, 20261 min read

Technical

Change the Proxmox Installer Scaling Mode Default in answer.toml

Set scaling_mode in the global section of answer.toml to permanently change the Proxmox installer's default. Tested in a throwaway VM, it sticks.

NguyenSeptember 13, 20261 min read