Lustre 1.6 Operations Manual

12.4 Bonding Module Parameters
Bonding module parameters control various aspects of bonding.
Outgoing traffic is mapped across the slave interfaces according to the transmit hash
policy. For Lustre, we recommend that you set the xmit_hash_policy option to the
layer3+4 option for bonding. This policy uses upper layer protocol information if
available to generate the hash. This allows traffic to a particular network peer to
span multiple slaves, although a single connection does not span multiple slaves.
$ xmit_hash_policy=layer3+4
The miimon option enables users to monitor the link status. (The parameter is a time
interval in milliseconds.) It makes an interface failure transparent to avoid serious
network degradation during link failures. A reasonable default setting is 100
milliseconds; run:
$ miimon=100
For a busy network, increase the timeout.
12.5 Setting Up Bonding
To set up bonding:
1. Create a virtual 'bond' interface by creating a configuration file in:
/etc/sysconfig/network-scripts/ # vi /etc/sysconfig/ \
network-scripts/ifcfg-bond0
2. Append the following lines to the file.
DEVICE=bond0
IPADDR=192.168.10.79 # Use the free IP Address of your network
NETWORK=192.168.10.0
NETMASK=255.255.255.0
USERCTL=no
BOOTPROTO=none
ONBOOT=yes
Chapter 12 Bonding 12-5