2 .\" Copyright 2008 by Sun Microsystems, Inc. All Rights Reserved.
3 .\" This file may be copied under the terms of the GNU Public License, v2.
5 .TH tunefs.lustre 8 "2008 Mar 15" Lustre "configuration utilities"
7 tunefs.lustre \- modify the Lustre configuration information on a disk
16 is used to modify the configuration information on a Lustre target
17 disk. This includes upgrading old (pre-Lustre 1.6) disks. This does not
18 reformat the disk or erase the target information, but modifying the
19 configuration information can result in an unusable filesystem. You have
22 Changes made here will affect a filesystem only when the target is next
27 .BI \--comment= comment
28 Set user comment about this disk, ignored by Lustre.
31 Only print what would be done; does not affect the disk
34 Remove all previous parameter info
36 .BI \--failnode= nid,...
37 Set the NID(s) of a failover partner. This option can be repeated as desired.
39 .BI \--fsname= filesystem_name
40 The Lustre filesystem this service will be part of. Default is 'lustre'
43 Force a particular OST or MDT index
45 .BI \--mountfsoptions= opts
46 Set permanent mount options, equivalent to setting in /etc/fstab
49 Add a configuration management service to this target
51 .BI \--mgsnode= nid,...
52 Set the NID(s) of the MGS node, required for all targets other than the MGS.
55 Remove a configuration management service to this target
58 Print less information.
61 Print more information.
64 Erase all config logs for the filesystem that this MDT is part of, and
65 regenerate them. This is very dangerous. All clients and servers should
67 All targets must then be restarted to regenerate the logs.
68 No clients should be started until all targets have restarted.
69 In general this should be executed on the MDT only, not the OSTs.
73 .B tunefs.lustre --erase-param --mgsnode=<new_nid> --writeconf /dev/sda
74 Change the MGS NID address. (This should be done on every target disk,
75 since they should all be contacting the same MGS.)
77 .B tunefs.lustre --param="failover.node=192.168.0.13@tcp0" /dev/sda
78 Add a failover NID location for this target
80 .B tunefs.lustre --mgs --mdt --fsname=testfs /dev/sda
81 Upgrade an old 1.4.X Lustre MDT to 1.6. The new filesystem name is "testfs".
83 .B tunefs.lustre --writeconf --mgs --mdt --fsname=testfs /dev/sda1
84 Upgrade an old 1.4.X Lustre MDT to 1.6, and start with brand-new 1.6
85 configuration logs. All old servers and clients must be stopped.
88 Please report all bugs to Sun Microsystems using http://bugzilla.lustre.org/
93 filesystem package and is available from Sun Microsystems, Inc via
95 http://downloads.lustre.org