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NetBSD 6.1.5 - man page for mount_lfs (netbsd section 8)

MOUNT_LFS(8)			   BSD System Manager's Manual			     MOUNT_LFS(8)

NAME
     mount_lfs -- mount a log-structured file system

SYNOPSIS
     mount_lfs [-bdins] [-N nsegs] [-o options] special node

DESCRIPTION
     The mount_lfs command attaches a log-structured file system special device on to the file
     system tree at the point node.  Both special and node are converted to absolute paths before
     use.  In addition, the lfs_cleanerd(8) utility is invoked to clean the file system periodi-
     cally.

     This command is normally executed by mount(8) at boot time.

     The options are as follows:

     -b      Instruct the cleaner to count bytes written, rather than segments read, to determine
	     how many segments to clean at once.

     -d      Run lfs_cleanerd(8) in debug mode.

     -i      Instruct the cleaner to use filesystem idle time as the criterion for aggressive
	     cleaning, instead of system load.

     -o      Options are specified with a -o flag followed by a comma separated string of
	     options.  See the mount(8) man page for possible options and their meanings.

     -N nsegs
	     Clean nsegs segments (or bytes' worth of segments if -b is also specified) at a
	     time.

     -n      Don't start lfs_cleanerd(8) on the file system.

     -s      Cause lfs_cleanerd(8) to read data in small chunks when cleaning the file system.

SEE ALSO
     mount(2), unmount(2), fstab(5), dump_lfs(8), lfs_cleanerd(8), mount(8), newfs_lfs(8)

     Ousterhout and Douglis, "Beating the I/O Bottleneck: A Case for Log-structured File
     Systems", Operating Systems Review, No. 1, Vol. 23, pp. 11-27, 1989, also available as
     Technical Report UCB/CSD 88/467.

     Rosenblum and Ousterhout, "The Design and Implementation of a Log-Structured File System",
     ACM SIGOPS Operating Systems Review, No. 5, Vol. 25, 1991.

     Seltzer, "File System Performance and Transaction Support", PhD Thesis, University of
     California, Berkeley, 1992, also available as Technical Report UCB/ERL M92.

     Seltzer, Bostic, McKusick and Staelin, "An Implementation of a Log-Structured File System
     for UNIX", Proc. of the Winter 1993 USENIX Conf., pp. 315-331, 1993.

HISTORY
     The mount_lfs function first appeared in 4.4BSD.

BSD					  March 31, 2005				      BSD


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