[PVE-User] Change the MTU?

John john at zoqdla.com
Wed Jun 6 15:33:08 CEST 2012


Might help you:

http://forum.proxmox.com/threads/7877-Jumbo-Frames-on-vmbr0

---
John Hurley <jhurley at zoqdla dot com>
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On Wed, Jun 6, 2012 at 9:30 AM, John <john at zoqdla.com> wrote:

> Hi Tobias,
>
> From what I know, you have to increase it on the Ethernet interface, not
> the bridge.
>
> I may be wrong, so if someone else knows please correct me.
>
> ---
> John Hurley <jhurley at zoqdla dot com>
> Help me out: Sign up for dropbox, I get some extra space :)
> http://db.tt/jHOdOnP
>
>
>
> On Wed, Jun 6, 2012 at 4:58 AM, Tobias Matthaeus <tm at carmunity.de> wrote:
>
>> Hello everyone,
>>
>>
>> I have two ProxMox Server and I am using DRBD to sync the VM-Images
>> between this both machines. Every Server is a DRBD Master and a DRBD Slave
>> for the other one too…
>> But my DRBD speed is not very high. I think I need to increase the MTU of
>> the VMBR-Interface. I tried that, but I got and error. Any Ideas anyone?
>>
>>
>> iface eth2 inet manual
>>        broadcast  10.2.7.255
>>        network 10.2.7.0
>>        mtu 9000
>>
>> auto vmbr1
>> iface vmbr1 inet static
>>        address  10.2.7.136
>>        netmask  255.255.255.0
>>        bridge_ports eth2
>>        bridge_stp off
>>        bridge_fd 0
>>        pre-up ifconfig eth2 mtu 9000
>>
>>
>>
>> After restarting network I get this error:
>>
>>
>> Waiting for vmbr0 to get ready (MAXWAIT is 2 seconds).
>> if-up.d/mountnfs[vmbr0]: waiting for interface vmbr1 before doing NFS
>> mounts ... (warning).
>> SIOCSIFMTU: Invalid argument
>> Failed to bring up vmbr1.
>> done.
>>
>>
>>
>>
>> Thanks and Regards!
>>
>>
>>
>>
>> Tobi
>>
>> _______________________________________________
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>> pve-user at pve.proxmox.com
>> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>
>
>
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