1.\" Copyright (c) 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)newlfs.8 8.1 (Berkeley) 06/19/93 7.\" 8.Dd 9.Dt NEWLFS 8 10.Os BSD 4.4 11.Sh NAME 12.Nm newlfs 13.Nd construct a new LFS file system 14.Sh SYNOPSIS 15.Nm newlfs 16.Fl L 17.Op Ar newlfs-options 18.Ar special 19.Sh DESCRIPTION 20.Nm Newlfs 21builds a log-structured file system on the specified special 22device basing its defaults on the information in the disk label. 23(Before running 24.Nm newlfs 25the disk must be labeled using 26.Xr disklabel 8 .) 27.Pp 28The following options define the general layout policies. 29.Bl -tag -width Fl 30.It Fl B 31The logical segment size of the file system in bytes. 32.It Fl b Ar block-size 33The block size of the file system in bytes. 34.It Fl L 35Create a log-structured file system (LFS). 36This flag is currently required. 37.It Fl m Ar free space \&% 38The percentage of space reserved from normal users; the minimum 39free space threshold. The default value used is 10%. 40See 41.Xr tunefs 8 42for more details on how to set this option. 43.It Fl s Ar size 44The size of the file system in sectors. 45.El 46.Sh SEE ALSO 47.Xr disktab 5 , 48.Xr fs 5 , 49.Xr dumplfs 8 , 50.Xr disklabel 8 , 51.Xr diskpart 8 , 52.Xr tunefs 8 53.Rs 54.%A M. McKusick 55.%A W. Joy 56.%A S. Leffler 57.%A R. Fabry 58.%T A Fast File System for UNIX , 59.%J ACM Transactions on Computer Systems 2 60.%V 3 61.%P pp 181-197 62.%D August 1984 63.%O (reprinted in the BSD System Manager's Manual) 64.Re 65.Sh HISTORY 66The 67.Nm 68command appeared in 69.Bx 4.4 . 70