/9tecExploring the backend of modern infrastructure — from VMware and Linux to automation, virtualization, and real-world homelab setups. 2026-09-24T23:30:47-03:00 Gustavo Novello / Jekyll © 2026 Gustavo Novello /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png VRMS Connection refused: tracking down an hms.service file descriptor leak2026-04-20T16:00:00-03:00 2026-04-20T16:00:00-03:00 /posts/vrms-hms-connection-refused/ Gustavo Novello Intermittent VRMS API failures traced through systemd watchdog timeouts, "Too many open files" errors, and a single XML parameter — schedule-health-checks — that was slowly exhausting file descriptors until hms crashed. PVSCSI vs LSI on vSphere: does the controller choice actually matter?2026-04-02T18:00:00-03:00 2026-04-02T18:00:00-03:00 /posts/pvscsi-vs-lsi-sioc/ Gustavo Novello Five VMs, two controllers, SIOC on and off. The numbers show that what you think is a controller problem is usually a storage fairness problem. fio_benchmark: A wrapper to stop writing the same fio commands over and over2026-03-20T10:00:00-03:00 2026-03-20T10:00:00-03:00 /posts/fio_benchmark/ Gustavo Novello A Bash script that compiles the standard fio test profiles sysadmins and storage engineers run manually every time into a single repeatable tool — with structured output and optional sweeps for finding bottlenecks. AMD APU Passthrough to a Proxmox LXC for Local AI2026-03-06T14:00:00-03:00 2026-03-06T23:43:16-03:00 /posts/AMD_APU_to_LXC/ Gustavo Novello Step-by-step guide to successfully passing your AMD APU through to an LXC container and deploying a hardware-accelerated AI stack with Ollama and Open WebUI. Failed tasks in SDDC 5.22025-08-17T21:00:00-03:00 2025-08-17T21:00:00-03:00 /posts/failed-tasks-in-sddc-5-2/ Gustavo Novello Notes on failed tasks in SDDC 5.2