KVM VN ping 4 ms

[tesquenure]

Hi,

I have a win XP alone on pve server with regulard ping < 200ms, but in 24h have about 10 pic to 4 or 8 ms (ping from PVE to VM).

When i have pic, no load average, no IO no network trafic on PVE and VM, or very small one.

pveversion -v
pve-manager: 1.6-5 (pve-manager/1.6/5261)
running kernel: 2.6.32-4-pve
proxmox-ve-2.6.32: 1.6-24
pve-kernel-2.6.32-4-pve: 2.6.32-24
qemu-server: 1.1-22
pve-firmware: 1.0-9
libpve-storage-perl: 1.0-14
vncterm: 0.9-2
vzctl: 3.0.24-1pve4
vzdump: 1.2-8
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.12.5-2
ksm-control-daemon: 1.0-4

Network :
E1000
Win driver Intel 8.10.3.0

In Windows i have a warnig message than tel me wrong MAC adresse.
Or my Mac adress is auto generat by PVE (BA:EE:04: D2:08:C2). (space for )

Regards,
Tes

 

[udo]

Hi Tes,
is this also happens with an linux kvm guest? (to see, if came from host or from windows).


Udo

 

[JustaGuy]

Maybe try a new MAC inside Windows?

In Interface Properties > Configure button > Advanced tab > Network Address,
There's a checkbox to select between 'Not Present' and 'Value', and you can enter a new MAC address in the 'Value' field.

 

[tesquenure]

Hi Udo, JustaGuy,

Windows dont have value in this case, try to put BAEE04D208C2, but message error from windows tel me than its not a good value.
ipconfig show me the right value BA-EE-04-D2-08-C2.
I hope i dont have to reactivate Windows if i change mac adress from win OS. thats why i cant test that on the week, have to wait the weekend.

Udo i dont have same probleme on ethO, no strang hight ping.
I gona try a VM with CDrescue and see if i have same isue on linux.
Regards,
Tes.

 

[tesquenure]

Udo,

I can confirm than have hight ping juste on Windows, sysrescue dont(same e1000 network card).

Regards,
Tes

 

[holgihero]

Check carefully if you do have duplicate MAC

I once duplicated vm's with the build in backup/restore mechanism, which leads to exact copies including duplicate MAC adresses.
To figure this out took me half a day...

Did you set MAC within Windows? Is that vm a clone and the original Windows machine still running?
Set a new one in /etc/qemu-server/<nr of vm>.conf

regards, Holger

 

[tesquenure]

Hi Holgihero,

No, on PVE.
No its an windows install from CD.

Does Windows need a reactivation after changing MAC adresse ?

Regards,
Tes.

 

[tom]

Hi Holgihero,

No, on PVE.
No its an windows install from CD.

Does Windows need a reactivation after changing MAC adresse ?

Regards,
Tes.

AFAIK Microsoft does not publish rules when reactivation is needed, but maybe I am wrong.

 

[JustaGuy]

Does Windows need a reactivation after changing MAC adresse ?

AFAIK Microsoft does not publish rules when reactivation is needed

It seems Microsoft doesn't, but lucky for Tes 'The Green Monkey King' saves the day!

With 7 YES votes, you should not be prompted to reactivate.
WPA checks ten categories of hardware:
1. - Video card. (gets one vote)
2. - SCSI adapter (gets one vote)
3. - The IDE adapter (the motherboard's IDE hard drive controller) (gets one vote)
4. - Network adapter (NIC) and its MAC Address (gets 3 votes)
5. - RAM - amount and range (i.e., 128 to 256MB, 256 to 512MB, etc.) (gets one vote)
6. - The processor's type - the make and model of processor(s) (gets one vote)
7. - The processor's serial number (gets one vote)
8. - The hard drive (gets one vote)
9. - The hard drive's Volume Serial Number (VSN) (gets one vote)
10. - The make and model(s) of CD/DVD drive(s) installed. (gets one vote)

 

[tesquenure]

Hi,

After some investigation, its look like, when vm writh more than 1Mo/s, some thing freez.

There is a big break on SDA wright, big break on md-2 wright, ping go up to 20ms and then a 100% loosing ping packet.

And user loosing connection from to this VM.

Then a lot off data come from the network, network down.

Do i have to try with Virtio network drivers ?

Regards.
Tes

 

[tesquenure]

Hi,

My ifconfig

give me :

vmtab102i0 Link encap:Ethernet HWaddr e6:02:57:91:2f:bd
adr inet6: fe80::e402:57ff:fe91:2fbd/64 Scope:Lien
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:2304036 errors:0 dropped:0 overruns:0 frame:0
TX packets:4208470 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:500
RX bytes:646021772 (616.0 MiB) TX bytes:377045258 (359.5 MiB)

Its normal that this mac adress is diferent than this on PVE webadmin ?

Same for the other one VM.

Regards,
Tes

 

[JustaGuy]

vmtab102i0

That's not the same interface as you see in the web interface- it's the TAP QEMU uses to reach the bridge.

The one from the web interface will have the same name from there and in the file.

 

[tesquenure]

Hi,

I use now virtio network drivers 5.1.209.605 10/08/2010, ping is about 600 ms (200 ms with e1000)
and aways have pic to 8 ms, with no user and no activity on the network.

Regards,
Tes