[PVE-User] Intermittent NIC Connectivity after Host Upgrade to PVE

[Saint Michael]

I read the mention of kernel Linux proxmox 4.15.18-18-pve, but I just run
the update and my kernel is still Linux proxmox 4.15.18-17-pve. I
installation is licensed and I am supposed to have all the updates. I also
see a bad problem with the network on Windows using virtio. I get 10% or
less of the bandwidth of a physical virtual machine on the same network.


On Fri, Jul 12, 2019 at 7:32 AM JR Richardson <jmr.richardson at gmail.com>
wrote:

> Yes, I was using latest stable, them went to unstable, it worked for a bit
> until reboot of VM then virtio-win-0.1.171.iso also failed. Intel E1000 NIC
> seems to be stable with latest PVE kernel update.
>
> JR
>
>
>
> Have you tried virtio drivers 0.1.141 latest stable
>
>
>
> Wolfgang
>
>
>
> -----Urspr ngliche Nachricht-----
> Von: JR Richardson <jmr.richardson at gmail.com>
> Gesendet: Donnerstag 11 Juli 2019 14:02
> An: pve-user at pve.proxmox.com
> Betreff: Re: [PVE-User] Intermittent NIC Connectivity after Host Upgrade
> to PVE
>
>
> Oddly enough, there was another kernel update yesterday, so I updated and
> so far the intermittent network connectivity problem seems to have went
> away.
> Problem appears on kernel: 4.15.18-17-pve but so far not on kernel:
> 4.15.18-18-pve.
>
> The issue with the VirtIO NIC driver is still present on Win2016. Still
> have to run the Intel NIC on the VM.
>
> I will do some more testing today and follow up.
>
> Thanks.
>
> JR
>
>
> Are you able to boot on a previous kernel and see if the problem returns ?
>
> Gianni
>
> On Wed, 10 Jul 2019 at 16:06, JR Richardson <jmr.richardson at gmail.com>
> wrote:
>
> > Hi All,
> >
> > I recently upgraded a host within a 4 Node Cluster from
> > pve-manager/5.2-5/eb24855a (running kernel: 4.15.18-1-pve) to
> > pve-manager/5.4-10/9603c337 (running kernel: 4.15.18-17-pve).
> >
> > I had several VMs running on the host node, some Win2016 Servers and
> > Linux Servers. I migrated the VM off the host node, performed the
> > upgrade, them migrated the VMs back to the upgraded host. All seemed
> > to go well, next day I notices the Win2016 servers having intermittent
> > network connectivity, Linux servers running fine. Performing
> > continuous pings to Win2016 servers, the NIC were dropping for 45-60
> > seconds every hour or so, time was not consistent. I was using VitIO
> > for NICs.
> >
> > I did windows update and this crashed the NICs, would not come up. I
> > downloaded the latest virtio-win-0.1.171.iso and updated drivers, This
> > did restore the NICs n the VMs but still have the network drops. I
> > switched the VM NICs to Intel E1000 and still have the network drops.
> >
> > I don't see anything in the host node logs or the Win2016 VM logs
> > indicating why the network drops periodically. Could this be a PVE
> > kernel issue? I think this is more of a Win2016 issue, maybe the Intel
> > NIC driver, its using the embedded Windows driver from 2010. Should I
> > try downloading the latest driver from Intel?
> >
> > Dell R710 host node NICs:
> > Ethernet controller: Broadcom Limited NetXtreme II BCM5709 Gigabit
> > Ethernet (rev 20) Ethernet controller: Intel Corporation 82576 Gigabit
> > Network Connection (rev 01)
> >
> > The NIC on the host for VMs is Broadcom. But the Linux hosts do not
> > experience any drops so i don't think this is a host node or host
> > kernel issue but I'm not sure.
> >
> > I appreciate any guidance.
> >
> > Thanks.
> >
> > JR
>
>
>
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