Lustre 1.6 Operations Manual

failover, 4-10
filesystem name, 4-8
finding nodes in the Lustre filesystem, 4-11
making/starting a filesystem, 4-5
module setup, 4-4
mount with inactive OSTs, 4-11
removing an OST, 4-13
running multiple Lustres, 4-12
stopping a server, 4-9
without Lustre service, 4-11
writeconf, 4-14
configurattion
starting a server, 4-8
configuring
adaptive timeouts, 20-6
configuring a Lustre network, 5-4
configuring Lustre, 4-4
configuring Lustre network, 5-4
consistent clocks, 3-6
core-required tools, 3-4
COW I/O, 19-12
D
DDN tuning, 21-6
setting maxcmds, 21-8
setting readahead and MF, 21-7
setting segment size, 21-7
setting write-back cache, 21-8
debugging
adding debugging to source code, 23-10
controlling the kernel debug log, 23-6
daemon, 23-5
debugging in UML, 23-11
finding Lustre UUID of an OST, 23-14
finding memory leaks, 23-8
lctl tool, 23-7
looking at disk content, 23-13
messages, 23-2
printing to /var/log/messages, 23-9
Ptlrpc request history, 23-14
sample lctl run, 23-9
tcpdump, 23-14
tools, 23-4
tracing lock traffic, 23-9
debugging tools, 3-5
designing a Lustre network, 5-1
device-level backup, 15-2
device-level restore, 15-4
DIRECT I/O, 19-12
downgrade
filesystem, 13-11
Lustre version 1.6.3 to version 1.4.11, 13-11
requirements, 13-11
downloading Lustre, 3-1
E
Elan (Quadrics Elan), 2-2
Elan to TCP routing
modprobe.conf, 7-5, 7-6
start clients, 7-5, 7-7
start servers, 7-5, 7-6
end-to-end client checksums, 25-11
environmental requirements
changing kernel I/O schedulers, 3-8
choosing kernel I/O schedulers, 3-7
consistent clocks, 3-6
SSH access, 3-6
universal UID/GID, 3-6
error messages, 22-1
F
failover, 8-1
active / active configuration, 8-6
configuring, 4-10
configuring MDS and OSTs, 8-6
connection handling, 8-4
hardware requirements, 8-7
Heartbeat, 8-4
MDS, 8-6
OST, 8-5
power equipment, 8-3
power management software, 8-3
role of nodes, 8-5
setup with Heartbeat V1, 8-8
setup with Heartbeat V2, 8-16
software, considerations, 8-21
starting / stopping a resource, 8-6
failover, Heartbeat V1
configuring Heartbeat, 8-9
installing software, 8-8
failover, Heartbeat V2
configuring hardware, 8-17
installing software, 8-16
operating, 8-20
Index-2 Lustre 1.6 Operations Manual • September 2008