Re: [Xen-API] [XCP1.1] ixgbe jumbo frame support not working

[Uli Stärk <Uli.Staerk@xxxxxxxxxxxxxx>]

This has something to do with xen, see: 
http://forums.citrix.com/message.jspa?messageID=1593544

I did not find any proper solution and fixed it manually for the storage 
network adapters:

DEVICE_ID="10fb"
MODULE_NAME="ixgbe"
THIS_HOST_DOM0_UUID=$(grep CONTROL_DOMAIN_UUID /etc/xensource-inventory | 
/bin/cut -f 2 -d "=" | /bin/cut -f 2 -d "'")
THIS_HOST_UUID=$(/opt/xensource/bin/xe vm-list uuid=$THIS_HOST_DOM0_UUID 
params=resident-on --minimal)
PIF_UUIDS=$(/opt/xensource/bin/xe pif-list host-uuid=$THIS_HOST_UUID 
physical=true management=false device-id=$DEVICE_ID --minimal | /bin/sed 's/,/ 
/g')

for PIF_UUID in $PIF_UUIDS
do
        /opt/xensource/bin/xe pif-param-set uuid=$PIF_UUID disallow-unplug=false
        /opt/xensource/bin/xe pif-unplug uuid=$PIF_UUID
done

/sbin/rmmod $MODULE_NAME
/sbin/insmod $(/usr/bin/find /lib/modules/$(/bin/uname --kernel-release) -name 
$MODULE_NAME.ko)
sleep 2

for PIF_UUID in $PIF_UUIDS
do
        PIF_IP=$(xe pif-list uuid=$PIF_UUID params=IP --minimal)
#        PIF_NETMASK=$(xe pif-list uuid=$PIF_UUID params=netmask --minimal)
        PIF_DEVICE=$(xe pif-list uuid=$PIF_UUID params=device --minimal)

        /sbin/ip link set $PIF_DEVICE mtu 9000 up
        /sbin/ip addr add $PIF_IP/24 dev $PIF_DEVICE
done

-----Ursprüngliche Nachricht-----
Von: xen-api-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-api-bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Christian Fischer
Gesendet: Mittwoch, 30. November 2011 11:42
An: xen-api@xxxxxxxxxxxxxxxxxxx
Betreff: [Xen-API] [XCP1.1] ixgbe jumbo frame support not working

I need jumbo frame support. It is not possible to set MTU values above 1504. 
Any hints? ixgbe version 2.1.4 should support a maximum MTU value of 16110.

[root@pool5-icl ~]# ip link set mtu 1505 dev eth5
SIOCSIFMTU: Invalid argument

[root@pool5-icl ~]# lspci | grep 10\ Gigabit
17:00.0 Ethernet controller: Intel Corporation 82599EB 10 Gigabit TN Network 
Connection (rev 01)
17:00.1 Ethernet controller: Intel Corporation 82599EB 10 Gigabit TN Network 
Connection (rev 01)

No problem to set MTU to 9000 for all other network interfaces (Broadcom/Intel 
1GBit).

Thanks
Christian

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