diff options
Diffstat (limited to 'sbin/tunefs')
| -rw-r--r-- | sbin/tunefs/tunefs.8 | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/sbin/tunefs/tunefs.8 b/sbin/tunefs/tunefs.8 index cf62973cb01..f43f334274c 100644 --- a/sbin/tunefs/tunefs.8 +++ b/sbin/tunefs/tunefs.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: tunefs.8,v 1.13 1999/05/29 01:50:18 aaron Exp $ +.\" $OpenBSD: tunefs.8,v 1.14 2000/03/18 22:56:06 aaron Exp $ .\" $NetBSD: tunefs.8,v 1.8 1995/03/18 15:01:29 cgd Exp $ .\" .\" Copyright (c) 1983, 1991, 1993 @@ -60,9 +60,10 @@ The parameters which are to be changed are indicated by the flags given below: .Bl -tag -width Ds .It Fl A -The file system has several backups of the super-block. Specifying -this option will cause all backups to be modified as well as the -primary super-block. This is potentially dangerous - use with caution. +The file system has several backups of the super-block. +Specifying this option will cause all backups to be modified as well as the +primary super-block. +This is potentially dangerous - use with caution. .It Fl a Ar maxcontig This specifies the maximum number of contiguous blocks that will be laid out before forcing a rotational delay (see @@ -119,14 +120,16 @@ fragmentation is unlikely to be problematical, and the file system can be optimized for time. .It Fl p This option shows a summary of what the current tuneable settings -are on the selected file system. More detailed information can be -obtained in the +are on the selected file system. +More detailed information can be obtained in the .Xr dumpfs 8 manual page. .It Fl s Ar enable_or_disable -This option enables soft updates on the file system. Soft updates +This option enables soft updates on the file system. +Soft updates eliminates most synchronous writes to disk by maintaining -a partial order of writes to the disk. This significantly improves +a partial order of writes to the disk. +This significantly improves meta-data operations (file creation and deletion) at the expense of subjecting them to the same potential 30-second delay as file data. Recovery is made simpler, however, by maintaining a strict ordering of |