[PVE-User] Debian 7 guest losing network

Alexandre DERUMIER aderumier at odiso.com
Tue Sep 29 06:11:22 CEST 2015


Not sure it's related but
I remember some network latency problems with kernel 3.2 from wheezy and virtio
nics in the past.
Using kernel 3.16 from backports fixed the problem.

----- Mail original -----
De: "Eneko Lacunza" <elacunza at binovo.es>
À: "proxmoxve" <pve-user at pve.proxmox.com>
Envoyé: Lundi 28 Septembre 2015 17:53:29
Objet: [PVE-User] Debian 7 guest losing network

Hi all, 

I have a PVE 3.4 node with pve kernel 2.6.32-39 (details below). 

A quite busy Samba server VM is losing network conectivity about every 
week since 27th August. 
This VM can't ping other network elements, and one can't access the 
Samba in the VM nor ping it when this happens. 
VM is a security-updated Debian 7. Last apt-get upgrade in the VM before 
first lost network was on 19th August. 

Last Proxmox update was on 15th June, so I don't really think this is a 
Proxmox related issue - but I'm sure there are lot's of Debian 7 VMs out 
there. Is anyone having this problem? Any idea? 

I tried both e1000 and virtio network adapters, but VM continues to lose 
network. I do have other 2 Debian 7 hosts in the cluster (one in the 
same host), but they are not so busy (and haven't lost network for now). 

# pveversion -v 
proxmox-ve-2.6.32: 3.4-156 (running kernel: 2.6.32-39-pve) 
pve-manager: 3.4-6 (running version: 3.4-6/102d4547) 
pve-kernel-2.6.32-39-pve: 2.6.32-156 
pve-kernel-2.6.32-29-pve: 2.6.32-126 
pve-kernel-2.6.32-34-pve: 2.6.32-140 
lvm2: 2.02.98-pve4 
clvm: 2.02.98-pve4 
corosync-pve: 1.4.7-1 
openais-pve: 1.1.4-3 
libqb0: 0.11.1-2 
redhat-cluster-pve: 3.2.0-2 
resource-agents-pve: 3.9.2-4 
fence-agents-pve: 4.0.10-2 
pve-cluster: 3.0-17 
qemu-server: 3.4-6 
pve-firmware: 1.1-4 
libpve-common-perl: 3.0-24 
libpve-access-control: 3.0-16 
libpve-storage-perl: 3.0-33 
pve-libspice-server1: 0.12.4-3 
vncterm: 1.1-8 
vzctl: 4.0-1pve6 
vzprocps: 2.0.11-2 
vzquota: 3.1-2 
pve-qemu-kvm: 2.2-10 
ksm-control-daemon: 1.1-1 
glusterfs-client: 3.5.2-1 

Thanks a lot 

Zuzendari Teknikoa / Director Técnico 
Binovo IT Human Project, S.L. 
Telf. 943575997 
Astigarraga bidea 2, planta 6 dcha., ofi. 3-2; 20180 Oiartzun (Gipuzkoa) 

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