Lustre 1.6 Operations Manual

How do I control multiple services on one node independently?
You can do this by assigning an OST (or MDS) to a specific group, often with a name
that relates to the service itself (e.g. ost1a, ost1b, ...). In the lmc configuration script,
put each OST into a separate group, use:
lmc --add ost --group ...
When starting up each OST use:
lconf --group {--reformat,--cleanup,etc} foo.xml
to start up each one individually.
Unless a group is specified all of the services on the that node will be affected by the
command.
Beginning with Lustre 1.4.4, managing individual services has been substantially
simplified.
The group / select mechanics are gone, and you can operate purely on the basis of
service names:
lconf --service [--reformat --cleanup ...] foo.xml
For example, if you add the service ost1-home, type:
lmc --add ost --ost ost1-home ...
You can start it with:
lconf --service ost1-home foo.xml
As before, if you do not specify a service, all services configured for that node will
be affected by your command.
D-16 Lustre 1.6 Operations Manual • September 2008