handle (rare) carry bug

[unix-history] / usr / src / sbin / newfs / newfs.8

diff --git a/usr/src/sbin/newfs/newfs.8 b/usr/src/sbin/newfs/newfs.8
index e7a0460..8ca131a 100644 (file)
--- a/usr/src/sbin/newfs/newfs.8
+++ b/usr/src/sbin/newfs/newfs.8
@@ -2,15 +2,17 @@
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"

-.\"    @(#)newfs.8     5.1 (Berkeley) %G%
+.\"    @(#)newfs.8     6.2 (Berkeley) %G%

 .\"
 .\"

-.TH NEWFS 8 "20 February 1983"
+.TH NEWFS 8 ""

 .UC 5
 .SH NAME
 newfs \- construct a new file system
 .SH SYNOPSIS
 .B /etc/newfs
 [
 .UC 5
 .SH NAME
 newfs \- construct a new file system
 .SH SYNOPSIS
 .B /etc/newfs
 [

+.B \-N
+] [

 .B \-v
 ] [
 .B \-n
 .B \-v
 ] [
 .B \-n


@@ -40,6 +42,10 @@ The
 .B \-n
 option prevents the 
 bootstrap programs from being installed.
 .B \-n
 option prevents the 
 bootstrap programs from being installed.

+The
+.B \-N
+option causes the file system parameters to be printed out
+without actually creating the file system.

 .PP
 If the 
 .B \-v
 .PP
 If the 
 .B \-v


@@ -73,6 +79,14 @@ The default value used is 16.
 The percentage of space reserved from normal users; the minimum
 free space threshhold.  The default value used is 10%.
 .TP 10
 The percentage of space reserved from normal users; the minimum
 free space threshhold.  The default value used is 10%.
 .TP 10

+.B \-o optimization preference (``space'' or ``time'')
+The file system can either be instructed to try to minimize the time spent
+allocating blocks, or to try to minimize the space fragmentation on the disk.
+If the value of minfree (see above) is less than 10%,
+the default is to optimize for space;
+if the value of minfree greater than or equal to 10%,
+the default is to optimize for time.
+.TP 10

 .B \-r revolutions/minute
 The speed of the disk in revolutions per minute (normally 3600).
 .TP 10
 .B \-r revolutions/minute
 The speed of the disk in revolutions per minute (normally 3600).
 .TP 10


@@ -99,8 +113,10 @@ format(8),
 mkfs(8),
 tunefs(8)
 .PP
 mkfs(8),
 tunefs(8)
 .PP

-McKusick, Joy, Leffler; "A Fast File System for Unix",
-Computer Systems Research Group, Dept of EECS, Berkeley, CA 94720;
-TR #7, September 1982.
+M. McKusick, W. Joy, S. Leffler, R. Fabry,
+``A Fast File System for UNIX'',
+\fIACM Transactions on Computer Systems 2\fP, 3.
+pp 181-197, August 1984.
+(reprinted in the System Manager's Manual and in Volume 2c)

 .SH BUGS
 Should figure out the type of the disk without the user's help.
 .SH BUGS
 Should figure out the type of the disk without the user's help.