User guide

Options for Lustre kernel modulesB–6
B.3 Modifying the /etc/modprobe.conf file on Linux Version 2.6 client
nodes manually
TIP: You can restrict the Gigabit Ethernet interfaces that a client node uses for interaction with an HP SFS
system, by specifying options lnet settings only for the interfaces that are to be used.
On client nodes that are running a Linux 2.6 kernel, modify the /etc/modprobe.conf file as follows:
1. Identify the correct settings for the interconnects that are to be used to connect to the HP SFS system.
2. Create the /etc/modprobe.conf.lustre file.
3. Add the following line to the /etc/modprobe.conf file:
include /etc/modprobe.conf.lustre
4. To configure the options lnet settings on the client node, add an entry to the
/etc/modprobe.conf.lustre file to specify the networks that are to be used to connect to the
HP SFS system. Use the following syntax:
options lnet option1=value1 [option2=value2...]
The syntax of the supported options is as follows:
networks=network1[,network2...]
portals_compatibility=weak|none
When listing the networks, put the fastest interconnect first in the networks option list; this ensures
that the fastest interconnect will be used (where possible) for file system I/O operations.
The following example shows the entry for a system that uses a Gigabit Ethernet interconnect and a
Myrinet interconnect. In this example, none of the servers that the client will access are running in
Portals compatibility mode:
options lnet networks=gm0,tcp0(eth1) portals_compatibility=none
See Section B.2 for more examples of options lnet settings.
5. To enable the client node to use quotas functionality, add the following lines to the
/etc/modprobe.conf.lustre file:
install lov /sbin/modprobe lquota ; /sbin/modprobe --ignore-install lov
install mdc /sbin/modprobe lquota ; /sbin/modprobe --ignore-install mdc
install osc /sbin/modprobe lquota ; /sbin/modprobe --ignore-install osc
remove mdc /sbin/modprobe -r --ignore-remove mdc ; /sbin/modprobe -r lquota
B.4 Modifying the /etc/modules.conf file on Linux Version 2.4 client
nodes manually
TIP: You can restrict the Gigabit Ethernet interfaces that a client node uses for interaction with an HP SFS
system, by specifying options lnet settings only for the interfaces that are to be used.
On client nodes that are running a Linux 2.4 kernel, modify the /etc/modules.conf file as follows:
1. Identify the correct settings for the interconnects that are to be used to connect to the HP SFS system.
2. Create the /etc/modules.conf.lustre file.
3. Add the following line to the /etc/modules.conf file:
include /etc/modules.conf.lustre