Lustre 1.6 Operations Manual

Now for the LOVs:
lmc -m test.xml --add lov --lov foo-lov --mds foo-mds \
--stripe_sz 1048576 --stripe_cnt 1 --stripe_pattern 0
lmc -m test.xml --add lov --lov bar-lov --mds bar-mds \
--stripe_sz 1048576 --stripe_cnt 1 --stripe_pattern 0
Each LOV needs at least one OST:
lmc -m test.xml --add ost --node ost_server --lov foo-lov \
--ost foo-ost1 --group foo-ost1 --fstype ldiskfs --dev /dev/sdc
lmc -m test.xml --add ost --node ost_server --lov bar-lov \
--ost bar-ost1 --group
bar-ost1 --fstype ldiskfs --dev /dev/sdd
Set up the client mount points:
lmc -m test.xml --add mtpt --node foo-client --path /mnt/foo \
--mds foo-mds --lov foo-lov
lmc -m test.xml --add mtpt --node bar-client --path /mnt/bar \
--mds bar-mds --lov bar-lov
If the Lustre filesystem "foo" already exists, and you want to add the filesystem "bar"
without reformatting foo, use the group designator to reformat only the new disks:
ost_server> lconf --group bar-ost1 --select bar-ost1 \
--reformat test.xml
mds_server> lconf --group bar-mds --select bar-mds \
--reformat test.xml
If you change the --dev that foo-mds uses, you also need to commit that new
configuration (foo-mds must not be running):
mds_server> lconf --group foo-mds --select foo-mds --write_conf
test.xml
Note – If you want both mount points on a client, you can use the same client node
name for both mount points.
Appendix D Lustre Knowledge Base D-7