2 .\" Copyright (c) 2007, 2010, Oracle and/or its affiliates. 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 the mount options that will be used when mounting the backing fs.
47 WARNING: unlike earlier versions of \fBtunefs.lustre\fR, this version
48 completely replaces the existing mount options with those specified on
49 the command line, issuing a warning on stderr if any of the default
50 mount options are omitted. The defaults for ldiskfs are
51 OST: \fIerrors=remount-ro,mballoc,extents\fR;
52 MGS/MDT: \fIerrors=remount-ro,iopen_nopriv,user_xattr\fR.
53 \fBDO NOT\fR alter the default mount options unless you know what you are doing.
55 .BI \--network= net,...
56 Network(s) to restrict this ost/mdt to. This option can be repeated as desired.
59 Add a configuration management service to this target
61 .BI \--mgsnode= nid,...
62 Set the NID(s) of the MGS node, required for all targets other than the MGS.
65 Remove a configuration management service to this target
68 Print less information.
71 Print more information.
74 Erase the configuration logs for the filesystem that this server is part of, and regenerate them. This is very dangerous. All clients must be unmounted and servers for this filesystem should be stopped.
75 All targets (OSTs/MDTs) must then be restarted to regenerate the logs.
76 No clients should be started until all targets have restarted.
78 Correct order of operations is:
80 * Unmount all clients of this filesystem
82 * Unmount MDT and all OSTs of this filesystem
84 * Run \fBtunefs.lustre --writeconf <device>\fR on every server
91 .B tunefs.lustre --erase-param --mgsnode=<new_nid> --writeconf /dev/sda
92 Change the MGS NID address. (This should be done on every target disk,
93 since they should all be contacting the same MGS.)
95 .B tunefs.lustre --param="failover.node=192.168.0.13@tcp0" /dev/sda
96 Add a failover NID location for this target
98 .B tunefs.lustre --mgs --mdt --fsname=testfs /dev/sda
99 Upgrade an old 1.4.X Lustre MDT to 1.6. The new filesystem name is "testfs".
101 .B tunefs.lustre --writeconf --mgs --mdt --fsname=testfs /dev/sda1
102 Upgrade an old 1.4.X Lustre MDT to 1.6, and start with brand-new 1.6
103 configuration logs. All old servers and clients must be stopped.
106 Please report all bugs to Sun Microsystems using http://bugzilla.lustre.org/
111 filesystem package and is available from Sun Microsystems, Inc via
113 http://downloads.lustre.org
117 .BR mount.lustre (8),