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.\"	$OpenBSD: mount_lfs.8,v 1.10 1999/07/21 01:07:55 deraadt Exp $
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.\"	@(#)mount_lfs.8	8.5 (Berkeley) 3/30/94
.\"
.Dd March 30, 1994
.Dt MOUNT_LFS 8
.Os
.Sh NAME
.Nm mount_lfs
.Nd mount a log-structured file system
.Sh SYNOPSIS
.Nm mount_lfs
.Op Fl dns
.Op Fl o Ar options
.Ar special
.Ar node
.Sh DESCRIPTION
The
.Nm
command attaches a log-structured file system
.Ar special
device on to the file system tree at the point
.Ar node .
In addition, the
.Xr lfs_cleanerd 8
utility is invoked to clean the file system periodically.
.Pp
This command is normally executed by
.Xr mount 8
at boot time.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl d
Run
.Xr lfs_cleanerd 8
in debug mode.
.It Fl o Ar options
Options are specified with a
.Fl o
flag followed by a comma separated string of options.
See the
.Xr mount 8
man page for possible options and their meanings.
.It Fl n
Don't start
.Xr lfs_cleanerd 8
on the file system.
.It Fl s
Cause
.Xr lfs_cleanerd 8
to read data in small chunks when cleaning the file system.
.El
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr fstab 5 ,
.Xr lfs_cleanerd 8 ,
.Xr mount 8
.Pp
.Rs
.%A Ousterhout and Douglis
.%D 1989
.%T "Beating the I/O Bottleneck: A Case for Log-structured File Systems"
.%J "Operating Systems Review"
.%V Vol. 23
.%N No. 1
.%P pp. 11-27
.%O "also available as Technical Report UCB/CSD 88/467"
.Re
.Rs
.%A Rosenblum and Ousterhout
.%D 1991
.%T "The Design and Implementation of a Log-Structured File System"
.%J "ACM SIGOPS Operating Systems Review"
.%V Vol. 25
.%N No. 5
.Re
.Rs
.%A Seltzer
.%D 1992
.%T "File System Performance and Transaction Support"
.%B "PhD Thesis, University of California, Berkeley"
.%O "also available as Technical Report UCB/ERL M92"
.Re
.Rs
.%A Seltzer, Bostic, McKusick and Staelin
.%D 1993
.%T "An Implementation of a Log-Structured File System for UNIX"
.%J "Proc. of the Winter 1993 USENIX Conf."
.%P pp. 315-331
.Re
.Sh HISTORY
The
.Nm
function first appeared in
.Bx 4.4 .