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4 .\" Copyright (c) 2011, 2012, Intel Corporation.
6 .\" This file may be copied under the terms of the GNU Public License.
8 .TH mkfs.lustre 8 "2008 Mar 15" Lustre "configuration utilities"
10 mkfs.lustre \- format a disk for a Lustre service
13 .BR mkfs.lustre { --ost | --mdt | --mgs }
24 metadata storage target
27 configuration management service - one per site. This service can be
30 service by specifying both types
33 is used to format a disk device for use as part of a Lustre
34 filesystem. After formatting, a disk can be mounted to start the Lustre
35 service defined by this command.
39 .BI \--backfstype= fstype
40 Force a particular format for the backing fs (ext3, ldiskfs)
42 .BI \--comment= comment
43 Set user comment about this disk, ignored by Lustre.
45 .BI \--device-size= KB
46 Set device size for loop devices
49 Only print what would be done; does not affect the disk
51 .BI \--failnode= nid,...
52 Set the NID(s) of a failover partner. This option can be repeated as desired.
53 Cannot be used with --servicenode.
55 .BI \--servicenode= nid,....
56 Set the NID(s) of all service partner. This option treats all nodes as equal
57 service nodes. Cannot be used with --failnode.
59 .BI \--fsname= filesystem_name
60 The Lustre filesystem this service will be part of. The maximum
61 filesystem_name length is 8 characters. Default is 'lustre'
64 Force a particular OST or MDT index
66 .BI \--mkfsoptions= opts
67 Format options for the backing fs. For example, ext3 options could be set here.
69 .BI \--mountfsoptions= opts
70 Set the mount options that will be used when mounting the backing fs.
71 WARNING: unlike earlier versions of \fBmkfs.lustre\fR, this version completely
72 replaces the default mount options with those specified on the command line,
73 issuing a warning on stderr if any of the default mount options are omitted.
74 The defaults for \fIldiskfs\fR are
75 OST: \fIerrors=remount-ro,mballoc,extents\fR;
76 MGS/MDT: \fIerrors=remount-ro,user_xattr\fR.
77 \fBDO NOT\fR alter the default mount options unless you know what you are doing.
79 .BI \--network= net,...
80 Network(s) to restrict this ost/mdt to. This option can be repeated as desired.
82 .BI \--mgsnode= nid,...
83 Set the NID(s) of the MGS node, required for all targets other than the MGS.
85 .BI \--param " key=value"
86 Set permanent parameter
90 This option can be repeated as desired. Typical options might include:
92 .I \--param sys.timeout=40
96 .I \--param lov.stripesize=2M
100 .I \--param lov.stripecount=2
104 .I \--param failover.mode=failout
106 Return errors instead of waiting for recovery
111 Print less information.
114 Reformat an existing Lustre disk as a new target
117 Used to initialize a target with the same
119 as a previously used target if the old target was permanently lost for
120 some reason (e.g. multiple disk failure or massive corruption). This
121 avoids having the target try to register as a new target with the MGS.
123 .BI \--stripe-count-hint= stripes
124 Used for optizing MDT inode size
127 Print more information.
131 .B mkfs.lustre --fsname=testfs --mdt --mgs /dev/sda1
132 Combined MGS and MDT for filesystem 'testfs' on node e.g. cfs21
134 .B mkfs.lustre --fsname=testfs --ost --mgsnode=cfs21@tcp0 /dev/sdb
135 OST for filesystem 'testfs' on any node using the above MGS.
137 .B mkfs.lustre --mgs /dev/sda1
138 Standalone MGS on e.g. node cfs22
140 .B mkfs.lustre --fsname=myfs1 --mdt --mgsnode=cfs22@tcp0 /dev/sda2
141 MDT for filesystem 'myfs1' on any node, using the above MGS
150 .BR mount.lustre (8),
151 .BR tunefs.lustre (8),