414a35e60a
track.
The Id line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;
.\" $Id$
.\"
If the immediately preceding comment is a @(#) format ID marker than the
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Otherwise, an additional blank line is inserted.
Approved by: bde
213 lines
5.8 KiB
Groff
213 lines
5.8 KiB
Groff
.\" Copyright (c) 1993 University of Utah.
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.\" Copyright (c) 1980, 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Systems Programming Group of the University of Utah Computer
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.\" Science Department.
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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 by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)vnconfig.8 8.1 (Berkeley) 6/5/93
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.\" $Id$
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.\"
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.Dd July 8, 1993
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.Dt VNCONFIG 8
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.Os BSD 4
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.Sh NAME
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.Nm vnconfig
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.Nd configure and enable vnode disks
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.Sh SYNOPSIS
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.Nm vnconfig
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.Op Fl cdeguv
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.Op Fl s Ar option
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.Op Fl r Ar option
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.Op Fl S Ar value
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.Ar special_file Ar [regular_file]
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.Op Ar feature
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.Nm vnconfig
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.Fl a
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.Op Fl cdeguv
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.Op Fl s Ar option
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.Op Fl r Ar option
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.Op Fl f Ar config_file
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.Sh DESCRIPTION
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The
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.Nm
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command configures and enables vnode pseudo disk devices.
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The first form of the command will associate the special file
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.Ar special_file
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with the regular file
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.Ar regular_file
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allowing the latter to be accessed as though it were a disk.
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Hence a regular file within the filesystem can be used for swapping
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or can contain a filesystem that is mounted in the name space. If you
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want to use swap backing store for your device instead of a file, you
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can leave regular_file out and specify the size of the block device
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with the -S option.
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.Pp
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Options indicate an action to be performed:
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.Bl -tag -width indent
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.It Fl a
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Read a command file and performs the
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specified actions for each device/file pair.
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.It Fl c
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Configure the device.
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If successful, references to
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.Ar special_file
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will access the contents of
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.Ar regular_file .
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.It Fl d
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Disable (if possible) the specified feature.
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.It Fl e
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Configure the device and enables any
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.Ar feature
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that was specified.
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If no feature was specified,
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.Fl e
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is the same as
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.Fl c .
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.It Fl f Ar config_file
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Use
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.Ar config_file
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as an alternate config file.
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.It Fl g
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Fiddle global options.
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.It Fl r Ar flag
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Reset
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.Ar flag .
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The list of allowed flags and their meanings are:
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.Bl -tag -width "follow"
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.It Ar labels
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use disk/slice labels.
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.It Ar follow
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debug flow in the
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.Xr vn 4
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driver.
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.It Ar debug
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debug data in the
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.Xr vn 4
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driver.
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.It Ar io
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debug I/O in the
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.Xr vn 4
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driver.
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.It Ar all
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turn on all flags.
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.It Ar none
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turn off all flags.
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.El
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.It Fl s Ar flag
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Set
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.Ar flag .
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The list of allowed flags and their meanings are the same as for the
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.Fl r
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option.
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.It Fl S Ar value{k,m,g,t}
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If no regular file is specified, VN will use swap for backing store.
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This option specifies the size of the device. For example, '23m' for
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23 megabytes. The VN device will round the size up to a machine page boundry.
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Filesystems up to 7.9 terrabytes are supported.
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.It Fl u
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Disable and ``unconfigure'' the device.
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.It Fl v
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Print messages to stdout describing actions taken.
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.El
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.Pp
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If no action option is given,
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.Fl c
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is assumed.
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.Pp
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The
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.Ar feature
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argument specifies a feature that can be enabled via the
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.Fl e
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option:
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.Bl -tag -width indent
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.It Dv swap
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Swapping is enabled on the special file.
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See
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.Xr swapon 2 .
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.It Dv Pf mountro= Pa mount_point
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The special file is mounted read-only on
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.Ar mount_point .
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See
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.Xr mount 2 .
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.It Dv Pf mountrw= Pa mount_point
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The special file is mounted read-write on
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.Ar mount_point .
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See
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.Xr mount 2 .
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.It Dv Pf mount= Pa mount_point
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Same as ``mountrw=''.
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.El
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.Pp
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A configuration file contains one line per device/file pair in the form:
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.Bd -literal
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special_file regular_file [ feature ]
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.Ed
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.Pp
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where fields are seperated by white space.
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The previously described action options serve to configure, enable,
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disable or unconfigure all devices in the configuration file.
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.Sh FILES
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.Bl -tag -width /etc/vntab -compact
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.It Pa /etc/vntab
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default configuration file for
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.Fl a
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option.
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.El
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.Sh EXAMPLES
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.Pp
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.Dl vnconfig /dev/vn0c /tmp/diskimage
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.Pp
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Configures the vnode disk
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.Pa vn0c .
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.Pp
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.Dl vnconfig -e /dev/vn0c /var/swapfile swap
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.Pp
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Configures
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.Pa vn0c
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and enables swapping on it.
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.Pp
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.Dl vnconfig -d /dev/vn0c myfilesystem mount=/mnt
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.Pp
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Unmounts (disables)
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.Pa vn0c .
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.Pp
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.Dl vnconfig -ae
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.Pp
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Configures and enables all devices specified in
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.Pa /etc/vntab .
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.Sh SEE ALSO
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.Xr mount 2 ,
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.Xr swapon 2 ,
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.Xr unmount 2 ,
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.Xr vn 4 .
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