Did you try setting the mtu on the physical interface?
-------- Original Message --------
From: Ian Pilcher <[email protected]>
Sent: Thu, 01/11/2012 06:22 PM
To: [email protected]
CC:
Subject: [fedora-virt] Cannot set MTU on bridge
I am trying to create a bridge for use as an iSCSI storage network. The
iSCSI target will run on the host (Fedora 17) and the initiators will
all run on KVM VMs. Thus, no physical interface will be added to the
bridge.
For optimum performance, I want to use jumbo frames on the storage
network, so I've created ifcfg-stor0 as follows:
IPADDR=192.168.0.254
NETMASK=255.255.255.0
DEVICE=stor0
ONBOOT=yes
TYPE=Bridge
IPV6INIT=no
DELAY=0
STP=off
NM_CONTROLLED=no
MTU=9000
When starting the interface with ifup, I get "RTNETLINK answers:
Invalid argument", and the MTU is set to 1500.
Trying to set the MTU with ifconfig gives me "SIOCSIFMTU: Invalid
argument".
The workaround I've found so far is to attach a dummy device with the
desired MTU to the bridge:
DEVICE=dummy0
ONBOOT=yes
MTU=9000
IPV6INIT=no
BRIDGE=stor0
NM_CONTROLLED=no
This works, and it's even possible to remove the dummy device after the
MTU is set.
The questions is how can I do this without this awful hack?
TIA!
--
========================================================================
Ian Pilcher [email protected]
Sometimes there's nothing left to do but crash and burn...or die trying.
========================================================================
_______________________________________________
virt mailing list
[email protected]
https://admin.fedoraproject.org/mailman/listinfo/virt
_______________________________________________
virt mailing list
[email protected]
https://admin.fedoraproject.org/mailman/listinfo/virt
