1.\" Copyright (c) 2007 The DragonFly Project.  All rights reserved.
2.\"
3.\" This code is derived from software contributed to The DragonFly Project
4.\" by Matthew Dillon <dillon@backplane.com>
5.\"
6.\" Redistribution and use in source and binary forms, with or without
7.\" modification, are permitted provided that the following conditions
8.\" are met:
9.\"
10.\" 1. Redistributions of source code must retain the above copyright
11.\"    notice, this list of conditions and the following disclaimer.
12.\" 2. Redistributions in binary form must reproduce the above copyright
13.\"    notice, this list of conditions and the following disclaimer in
14.\"    the documentation and/or other materials provided with the
15.\"    distribution.
16.\" 3. Neither the name of The DragonFly Project nor the names of its
17.\"    contributors may be used to endorse or promote products derived
18.\"    from this software without specific, prior written permission.
19.\"
20.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
24.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
26.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
30.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31.\" SUCH DAMAGE.
32.\"
33.\" $DragonFly: src/sbin/newfs_hammer/newfs_hammer.8,v 1.5 2008/02/19 21:02:08 thomas Exp $
34.Dd September 10, 2007
35.Dt NEWFS_HAMMER 8
36.Os
37.Sh NAME
38.Nm newfs_hammer
39.Nd construct a new HAMMER file system
40.Sh SYNOPSIS
41.Nm
42.Fl L Ar label
43.Op Fl U Ar uuid
44.Ar special ...
45.Sh DESCRIPTION
46The
47.Nm
48utility creates a HAMMER filesystem on device
49.Ar special .
50If multiple devices are specified a single HAMMER filesystem is created
51which spans all of them.
52HAMMER filesystems are sector-size agnostic, however the
53.Dx
54implementation requires the sector size to be no larger than 16K.
55HAMMER filesystems start at a relative offset of 0 and may only be created
56under out-of-band disk labels (disklabel64 or gpt labels), or in standard
57disklabel partitions which do not overlap the label area.
58.Pp
59The options are as follows:
60.Bl -tag -width indent
61.It Fl L Ar label
62All HAMMER filesystems must be named and names should be unique on a
63per-machine basis.
64.It Fl U Ar uuid
65All HAMMER filesystems are assigned a globally unique UUID.
66If no UUID is specified one will be synthesized.
67.El
68.\".Sh NOTES
69.Sh EXAMPLES
70.Bd -literal -offset indent
71newfs_hammer -L Home /dev/ad0s1d
72.Ed
73.Pp
74Create a file system named
75.Sq Home
76on
77.Pa /dev/ad0s1d .
78.Sh DIAGNOSTICS
79Exit status is 0 on success and 1 on error.
80.Sh SEE ALSO
81.Xr disklabel 8 ,
82.Xr fdisk 8 ,
83.Xr newfs 8
84.Sh HISTORY
85The
86.Nm
87utility first appeared in
88.Dx 1.11 .
89.Sh AUTHORS
90.An Matthew Dillon Aq dillon@backplane.com
91