e1000 driver hang

mrcheap1984 said:
I also created an cron script to run every 45 minutes and if there's no connectivity it will reboot the machine. It's more a workaround that a resolution but should hopefully work till I install the new card.
Click to expand...

No need to reboot. The NIC comes back to life if you remove and re-insert the network cable - so just need to automate that.

Someone posted a suggestion in this thread some time ago to run systemctl restart networking, but in my case (Intel NUC10), that didn't help.

I had another hang overnight, and what did fix it for me this morning was ifdown / ifup:
Bash: 
# ifdown eno1
# ifup eno1
 
thebream said:
I had another hang overnight, and what did fix it for me this morning was ifdown / ifup:
# ifdown eno1 # ifup eno1
Click to expand...

Another hang again, my cron script detected the error, but /usr/sbin is not in root's PATH in cron - so it didn't actually do anything. Have now added full path to ifdown / ifup commands and hopefully it works next time.

FWIW, here is the code I use to detect the hang:

Bash: 
# check system journal for recent hang
if ! hangcount=$(journalctl \
                    --since "2 minutes ago" _TRANSPORT=kernel \
                    _KERNEL_SUBSYSTEM=pci --priority=3 | \
                 grep -c "Detected Hardware Unit Hang:")
then
    echo "No network hang detected, exiting"
    exit 0
fi

If anyone is interested, my cron script and more info is available here.
 
Last edited:
I've been using an Intel X520-DA2 and no further issue. For those with the ability to add a separate NIC.

Still frustrating no fixes only work arounds for this bug.
 
Great, now I have the exact same problem. I got myself an EliteDesk 800 G6 so I can offload the VMs to, and sure enough, sometime during the night it hangs. Would it help if I ditch the built-in network card and get a new one?
 
plentman said:
Great, now I have the exact same problem. I got myself an EliteDesk 800 G6 so I can offload the VMs to, and sure enough, sometime during the night it hangs. Would it help if I ditch the built-in network card and get a new one?
Click to expand...
Workarounds are either script or additional hardware.

If you can install a good quality PCI express NIC, go for it.
 
Okay, thank you very much. I have 2 EliteDesk 800 G6 here. One mini and one SFF. Do you perhaps have a recommendation for which NIC I should use so that everything runs smoothly? My other setup, ASRock DeskMini X300, has been running for 5 years without any problems, that's what I wish for the EliteDesk too.
 
For the mini are you using the Flex IO? I would check to make sure the one you purchase doesn't have the same intel chipset /driver. There are some Realtek ones, though Realtek chips do have some hate. I would avoid USB NICs.

For the SFF, Intel 226 will provide 2.5G and can be sourced 2nd hand. You can choose higher speeds, such as 10G but be aware of interface types and heat requierments.
 
First of all, thank you for the information.
I ran a few more tests yesterday.
With
post-up ethtool -K nic0 tso off
in the interfaces, it was a little better. Everything was fine during continuous operation, but when I made backups on the PBS, it kept crashing at a size of 200 GB.
I used a cheap PCI NIC card for testing, and everything works fine with that, but it's a little slower. I'll get a 2.5 GB card.
Is there any chance that Proxmox will be able to fix this at some point? Or do I just have to live with it? When I buy new hardware, the first thing I'll check is which chip is used for the NIC.

For testing purposes, I'll order the following NIC as an io port.
HP 2.5GbE LAN Flex Port Z2 Mini 169K0AA
 
Hi, a few weeks ago, I switched from a Fujitsu Futro S740 with Proxmox V8 to a Lenovo M720q with Proxmox V9, which, as is well known, is also affected by the e1000 bug due to the Intel i216v network card.

I have often read that I can fix the problem by using “tso off gso off.”

When I set up the M720q, I was aware of the bug and therefore bought an m2 adapter with RTL8125, which is not affected by the bug and also offers 2.5Gbit/s. I adjusted the drivers but then noticed that the single stream speed is limited to approx. 580 Mbit/s. Since I often transfer large amounts of data from a PC to a VM, this would mean a significant drop in speed with the RTL8125. That's why I didn't use the RTL8125, and the M720q has been running pretty normally for the last 3 weeks or so since I started using it productively.

Yesterday, I had my first hang-up: the Proxmox server was no longer accessible on the LAN. After a restart, everything was working again.

However, I would prefer not to encounter this issue again and am considering connecting a USB LAN adapter with an RTL8156B chipset. According to my research, this should be supported out-of-the-box, offer 2.5 Gbit/s, and not be limited to 580 Mbit/s for single stream. Has anyone had experience with this? Would this be a good decision?
 
Hey @DennyX I'm not sure about that specific adapter, but I've seen reports of people experiencing CPU utilisation bottlenecks when under high network loads. I'm not an expert, but I think this may be due to the extra processing needed to manage USB-to-network conversions.

An example of increased network load on these forums: https://forum.proxmox.com/threads/high-cpu-load-with-usb-ethernet-adapter.126352/

Good luck and report back if you decide to take this route.
 
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