2002-01-10 02:10:19 +03:00
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.\" $NetBSD: dkctl.8,v 1.2 2002/01/09 23:10:19 wiz Exp $
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.\"
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.\" Copyright 2002 Wasabi Systems, Inc.
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.\" All rights reserved.
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.\"
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.\" Written by Jason R. Thorpe for Wasabi Systems, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed for the NetBSD Project by
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.\" Wasabi Systems, Inc.
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.\" 4. The name of Wasabi Systems, Inc. may not be used to endorse
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.\" or promote products derived from this software without specific prior
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.\" written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd January 9, 2002
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.Dt DKCTL 8
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.Os
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.Sh NAME
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.Nm dkctl
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.Nd a program to manipulate disks
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.Sh SYNOPSIS
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.Nm
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.Ar device
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.Ar command
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.Oo
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.Ar arg Oo ...
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.Oc
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.Oc
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.Sh DESCRIPTION
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.Nm
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allows a user or system administrator to manipulate and configure disks
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in various ways. It is used by specifying a disk to manipulate, the command
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to perform, and any arguments the command may require.
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.Sh COMMANDS
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The following commands are supported:
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.Pp
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.Nm getcache
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.Pp
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Get and display the cache enables for the specified device.
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.Pp
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.Nm setcache
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.Ar none | r | w | rw
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.Op Ar save
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.Pp
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Set the cache enables for the specified device. The enables are
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as follows:
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.Bl -tag -width indent
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.It none
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Disable all caches on the disk.
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.It r
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Enable the read cache, and disable all other caches on the disk.
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.It w
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Enable the write cache, and disable all other caches on the disk.
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.It rw
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Enable both the read and write caches on the disk.
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.It save
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If specified, and the cache enables are savable, saves the cache
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enables in the disk's non-volatile parameter storage.
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.El
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.Pp
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.Nm synccache
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.Op Ar force
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.Pp
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Causes the cache on the disk to be synchronized, flushing all dirty
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write cache blocks to the media. If
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.Ar force
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is specified, the cache synchronization command will be issued even
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if the kernel does not believe that there are any dirty cache blocks
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in the disk's cache.
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.Sh SEE ALSO
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.Xr ioctl 2 ,
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.Xr sd 4 ,
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.Xr wd 4
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2002-01-10 01:30:14 +03:00
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Nx 1.6 .
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.Sh AUTHORS
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The
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.Nm
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command was written by Jason R. Thorpe of Wasabi Systems, Inc.
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