[PVE-User] Problem with Centos 5.X virtio ethernet drivers and last PVE updates

[richard lucassen]

On Thu, 23 Jul 2020 12:11:19 +0200
Roland <devzero at web.de> wrote:

I run a Debian Lenny VM:

# cat /etc/issue.net 
Debian GNU/Linux 5.0

# modinfo virtio_net
filename:       /lib/modules/2.6.26-2-686/kernel/drivers/net/virtio_net.ko
license:        GPL
description:    Virtio network driver
alias:          virtio:d00000001v*
depends:        
vermagic:       2.6.26-2-686 SMP mod_unload modversions 686 
parm:           napi_weight:int
parm:           csum:bool
parm:           gso:bool

Proxmox host version 5.4:

# cat /proc/version
Linux version 4.15.18-30-pve (root at nora) (gcc version 6.3.0 20170516
(Debian 6.3.0-18+deb9u1)) #1 SMP PVE 4.15.18-58 (Fri, 12 Jun 2020
13:53:01 +0200)

I upgraded from 4.15.18-27-pve to 4.15.18-30-pve and then the virtio
driver became very unstable. This machine has run for many years on
multiple versions of Proxmox (IIRC from version 1) without any problem.

R.

> i see that my centos 5.11 VM should have support for virtio (see
> below) and according to https://access.redhat.com/articles/2488201
> rhel/centos supports this since 5.3.
> 
> so if virtio worked before a proxmox update,  then i would call this a
> regression.
> 
> can you tell which proxmox version worked for you with virtio ?
> 
> i tested centos 5.11 installer on my older pve 6.0-4 (5.0.15-1-pve
> kernel) , but it does not find virtual disks.
> 
> roland
> 
> [root at hr-neu ~]# uname -aLinux hr-neu 2.6.18-398.el5 #1 SMP Tue Sep 16
> 20:50:52 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
> 
> 
> [root at centos5 ~]# cat /etc/redhat-release
> CentOS release 5.11 (Final)
> [root at centos5 ~]# rpm -q kernel --changelog|grep virtio|grep 446214
> - [xen] virtio: include headers in kernel-headers package (Eduardo
> Pereira Habkost ) [446214]
> - [xen] virtio: add PV network and block drivers for KVM (Mark
> McLoughlin ) [446214]
> - [xen] virtio: include headers in kernel-headers package (Eduardo
> Pereira Habkost ) [446214]
> - [xen] virtio: add PV network and block drivers for KVM (Mark
> McLoughlin ) [446214]
> 
> Am 23.07.20 um 10:22 schrieb richard lucassen:
> > On Tue, 21 Jul 2020 11:06:27 +0200
> > Michael Rasmussen via pve-user <pve-user at lists.proxmox.com> wrote:
> >
> >> On Tue, 21 Jul 2020 10:41:54 +0200
> >> richard lucassen <mailinglists at lucassen.org> wrote:
> >>
> >>> network. There is definitly something wrong somewhere.
> >>>
> >> The only thing wrong here is that you a running a version of
> >> RHEL/CentOS which is in maintenance support 2. This means there
> >> will be no more updates except critical bugs. As of March 31, 2017
> >> it is considered in deep freeze!
> > I know. But sometimes you need to keep an old version and a good
> > way to handle this is to run such an old version in a virtual
> > environment. A vhost supplies virtual hardware and apparently this
> > virtual hardware has changed. This is not A Good Thing IMHO.
> >
> > It runs well under subversion 27 of the pve kernel but has stopped
> > under version 30. So I think this is a bug as I do not expect design
> > changes between subversion 27 and 30.
> >
> > R.
> >


-- 
richard lucassen
https://contact.xaq.nl/