1.\" $NetBSD: mount_lfs.8,v 1.3 1997/05/29 01:48:36 cgd Exp $ 2.\" 3.\" Copyright (c) 1993, 1994 4.\" The Regents of the University of California. All rights reserved. 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.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)mount_lfs.8 8.5 (Berkeley) 3/30/94 35.\" 36.Dd March 30, 1994 37.Dt MOUNT_LFS 8 38.Os BSD 4.4 39.Sh NAME 40.Nm mount_lfs 41.Nd mount a log-structured file system 42.Sh SYNOPSIS 43.Nm mount_lfs 44.Op Fl dns 45.Op Fl o Ar options 46.Ar special 47.Ar node 48.Sh DESCRIPTION 49The 50.Nm mount_lfs 51command attaches a log-structured file system 52.Ar special 53device on to the file system tree at the point 54.Ar node . 55In addition, the 56.Xr lfs_cleanerd 8 57utility is invoked to clean the file system periodically. 58.Pp 59This command is normally executed by 60.Xr mount 8 61at boot time. 62.Pp 63The options are as follows: 64.Bl -tag -width Ds 65.It Fl d 66Run 67.Xr lfs_cleanerd 8 68in debug mode. 69.It Fl o 70Options are specified with a 71.Fl o 72flag followed by a comma separated string of options. 73See the 74.Xr mount 8 75man page for possible options and their meanings. 76.It Fl n 77Don't start 78.Xr lfs_cleanerd 8 79on the file system. 80.It Fl s 81Cause 82.Xr lfs_cleanerd 8 83to read data in small chunks when cleaning the file system. 84.El 85.Sh SEE ALSO 86.Xr mount 2 , 87.Xr unmount 2 , 88.Xr fstab 5 , 89.Xr lfs_cleanerd 8 , 90.Xr mount 8 91.sp 92.Rs 93.%A Ousterhout and Douglis 94.%D 1989 95.%T "Beating the I/O Bottleneck: A Case for Log-structured File Systems" 96.%J "Operating Systems Review" 97.%V Vol. 23 98.%N No. 1 99.%P pp. 11-27 100.%O "also available as Technical Report UCB/CSD 88/467" 101.Re 102.Rs 103.%A Rosenblum and Ousterhout 104.%D 1991 105.%T "The Design and Implementation of a Log-Structured File System" 106.%J "ACM SIGOPS Operating Systems Review" 107.%V Vol. 25 108.%N No. 5 109.Re 110.Rs 111.%A Seltzer 112.%D 1992 113.%T "File System Performance and Transaction Support" 114.%B "PhD Thesis, University of California, Berkeley" 115.%O "also available as Technical Report UCB/ERL M92" 116.Re 117.Rs 118.%A Seltzer, Bostic, McKusick and Staelin 119.%D 1993 120.%T "An Implementation of a Log-Structured File System for UNIX" 121.%J "Proc. of the Winter 1993 USENIX Conf." 122.%P pp. 315-331 123.Re 124.Sh HISTORY 125The 126.Nm mount_lfs 127function first appeared in 4.4BSD. 128