Lustre 1.6 Operations Manual

LNET self-test includes two user utilities, lst and lstclient.
lst is the user interface for the self-test console (run on console node). It provides a
list of commands to control the entire test system, such as create session, create test
groups, etc.
lstclient is the userspace self-test program which is linked with userspace LNDs and
LNET. A user can invoke lstclient to join a self-test session:
lstclient -sesid CONSOLE_NID group NAME
Example
This is an example of an LNET self-test script which simulates the traffic pattern of a
set of Lustre servers on a TCP network, accessed by Lustre clients on an IB network
(connected via LNET routers), with half the clients reading and half the clients
writing.
#!/bin/bash
export LST_SESSION=$$
lst new_session read/write
lst add_group servers 192.168.10.[8,10,12-16]@tcp
lst add_group readers 192.168.1.[1-253/2]@o2ib
lst add_group writers 192.168.1.[2-254/2]@o2ib
lst add_batch bulk_rw
lst add_test --batch bulk_rw --from readers --to servers
check=simple size=1M
lst add_test --batch bulk_rw --from writers --to servers
check=full size=4K
# start running
lst run bulk_rw
# display server stats for 30 seconds
lst stat servers & sleep 30; kill $?
# tear down
lst end_session
brw read
brw write
32-28 Lustre 1.7 Operations Manual • August 2008