Project

General

Profile

Actions
Copy link

Bug #416

open

BUG: pfv-tsys1 mgmt interface hangs (e1000/e1000e offload bug)

Bug #416: BUG: pfv-tsys1 mgmt interface hangs (e1000/e1000e offload bug)

Added by Charles N 2 days ago. Updated about 5 hours ago.

Status:
New
Priority:
Normal
Assignee:
Charles N
Target version:
Phase 1: Hypervisor & Network Stability
Start date:
08/14/2026
Due date:
08/14/2026 (Due in 2 days)
% Done:

0%

Estimated time:

Description

tsys1 (OptiPlex 9020) management interface intermittently stops responding. Known e1000/e1000e driver bug: hardware unit hang triggered by TSO/GRO/GSO/tx/rx offload on certain Intel NICs under Proxmox.

Fix

Disable offload features on the management interface (vmbr0 bridge port NIC):

MAIN_INT=$(brctl show | grep vmbr0 | awk '{print $NF}' | awk -F. '{print $1}')
ethtool -K $MAIN_INT tso off gro off gso off tx off rx off

Persistence

Must be applied via systemd service or /etc/network/interfaces post-up to survive reboot.

Existing code

Fix script exists at: archive/provisioning/Dell/Server/fixeth.sh
References: https://forum.proxmox.com/threads/e1000-driver-hang.58284/

Priority

HIGH — tsys1 hosts critical infra VMs (pfv-bms, pfv-netinfra-01, tsys-ca, tsys-librenms, cnode1).

Scope

  • Apply offload fix live
  • Make persistent across reboots
  • Check if other hosts with similar Intel NICs need the same fix
  • No reboot required for live fix
Actions
Copy link

Also available in: PDF Atom