2 .\" Copyright 2006 by Cluster File Systems, Inc. All Rights Reserved.
3 .\" Copyright 2008 by Sun Microsystems, Inc. All Rights Reserved.
4 .\" This file may be copied under the terms of the GNU Public License, v2.
6 .TH tunefs.lustre 8 "2008 Mar 15" Lustre "configuration utilities"
8 tunefs.lustre \- modify the Lustre configuration information on a disk
17 is used to modify the configuration information on a Lustre target
18 disk. This includes upgrading old (pre-Lustre 1.6) disks. This does not
19 reformat the disk or erase the target information, but modifying the
20 configuration information can result in an unusable filesystem. You have
23 Changes made here will affect a filesystem only when the target is next
28 .BI \--comment= comment
29 Set user comment about this disk, ignored by Lustre.
32 Only print what would be done; does not affect the disk
35 Remove all previous parameter info
37 .BI \--failnode= nid,...
38 Set the NID(s) of a failover partner. This option can be repeated as desired.
40 .BI \--fsname= filesystem_name
41 The Lustre filesystem this service will be part of. Default is 'lustre'
44 Force a particular OST or MDT index
46 .BI \--mountfsoptions= opts
47 Set permanent mount options, equivalent to setting in /etc/fstab
50 Add a configuration management service to this target
52 .BI \--mgsnode= nid,...
53 Set the NID(s) of the MGS node, required for all targets other than the MGS.
56 Remove a configuration management service to this target
59 Print less information.
62 Print more information.
65 Erase all config logs for the filesystem that this MDT is part of, and
66 regenerate them. This is very dangerous. All clients and servers should
68 All targets must then be restarted to regenerate the logs.
69 No clients should be started until all targets have restarted.
70 In general this should be executed on the MDT only, not the OSTs.
74 .B tunefs.lustre --erase-param --mgsnode=<new_nid> --writeconf /dev/sda
75 Change the MGS NID address. (This should be done on every target disk,
76 since they should all be contacting the same MGS.)
78 .B tunefs.lustre --param="failover.node=192.168.0.13@tcp0" /dev/sda
79 Add a failover NID location for this target
81 .B tunefs.lustre --mgs --mdt --fsname=testfs /dev/sda
82 Upgrade an old 1.4.X Lustre MDT to 1.6. The new filesystem name is "testfs".
84 .B tunefs.lustre --writeconf --mgs --mdt --fsname=testfs /dev/sda1
85 Upgrade an old 1.4.X Lustre MDT to 1.6, and start with brand-new 1.6
86 configuration logs. All old servers and clients must be stopped.
89 Please report all bugs to Sun Microsystems using http://bugzilla.lustre.org/
94 filesystem package and is available from Sun Microsystems, Inc via
96 http://downloads.lustre.org
100 .BR mount.lustre (8),