Virtio drivers 1.2.0 and 2.6.35

[MrJacK]

For information, kernel version 2.6.35 didn't work with latest virtio drivers 1.2.0, VM can't boot or crash (BSoD) with NetKVM installed.
2.6.32 seems to be running fine.
Tested with a VM on Windows 2008 R2 with or without SP1, kernel from pve and pvetest repo.

 

[tom]

works here. pls provide full details about your host, VM and drivers used.

 

[MrJacK]

Server DELL R610, 16G, 2 x E5520 HT on
iSCSI storage

VM configuration didn't change anything (IDE HD, VIRTIO HD, one NIC or multi)

Virtio Storage : 04/04/2011,60.61.101.58000
Virtio Network : 08/18/2010,6.0.209.605

pve-manager: 1.8-17 (pve-manager/1.8/5948)
running kernel: 2.6.35-1-pve
proxmox-ve-2.6.35: 1.8-11
pve-kernel-2.6.32-4-pve: 2.6.32-33
pve-kernel-2.6.35-1-pve: 2.6.35-11
qemu-server: 1.1-30
pve-firmware: 1.0-11
libpve-storage-perl: 1.0-17
vncterm: 0.9-2
vzctl: 3.0.27-1pve1
vzdump: 1.2-13
vzprocps: 2.0.11-2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.14.1-1
ksm-control-daemon: 1.0-5

 

[MrJacK]

Ok don't use this in your config file :

args: -no-kvm-pit-reinjection

This was an old workarround for time drift in VM.
VM now boot normaly.

 

[MrJacK]

A little benchmark about network stress with this release, between two VM on same host :

Thread Realtime(s) Throughput(KB/s) Throughput(Mbit/s) Avg Bytes per Completion
====== =========== ================ ==================
0 18.648 215922.986 1727.384 65518.938

Total Bytes(MEG) Realtime(s) Average Frame Size Total Throughput(Mbit/s)
================ =========== ==================
4026.531840 18.648 1456.331 1727.384

Total Buffers Throughput(Buffers/s) Pkts(recv/intr) Intr(count/s) Cycles/Byte
============= ===================== ===============
61440.000 3294.723 7 18891.52 7.0

Packets Sent Packets Received Total Retransmits Total Errors Avg. CPU %
============ ================ =================
172013 2764847 0 0 16.69

So it confirm my first tests in this post :

http://forum.proxmox.com/threads/58...oughput-do-I-have-to-decide?p=33765#post33765

2.6.35 + virtio 1.2.0 = fast network and crash free with 2K8 R2 VM

Now without "args: -no-hpet -no-kvm-pit-reinjection" i hope i will not have time drift again.

 

[Sniffer]

Sorry for the question....but where do you download NetKVM 1.2.0...

On the site i only get 1.1.6...and in this one you only get NetKVM drivers for xp and vista...wich suck...

 

[spirit]

you can find virtio 1.2.0 here :

http://forum.proxmox.com/threads/61...virtio-drivers-for-Windows-and-latest-PVE-1.8

(1.2.0 are from rhel6.1, not yet release to fedora).


But, for me , i have network disconnections with 2.6.35 and virtio 1.1.16 or 1.2.0 and qemu 0.14.0
I need to use 2.6.38 kernel (i had made a .deb in the above post).

maybe qemu 0.14.1 is correcting the network problem ?

i'll do more test next week with 2.6.35+virtio 1.2.0+qemu 0.14.1