NetBSD/usr.sbin/mdconfig/mdconfig.8

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.\"
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.\" $NetBSD: mdconfig.8,v 1.3 1997/10/17 10:24:17 lukem Exp $
.\"
.\" Copyright (c) 1995 Gordon W. Ross
.\" All rights reserved.
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.Dd July 8, 1993
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.Dt MDCONFIG 8
.Os BSD 4
.Sh NAME
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.Nm mdconfig
.Nd configure MEMORY disks
.Sh SYNOPSIS
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.Nm
.Fl c
.Op Fl v
.Ar special_file
.Ar 512-byte-blocks
.Sh DESCRIPTION
The
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.Nm
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command configures memory disk devices.
It will associate the special file
.Ar special_file
with a range of user-virtual memory allocated by the
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.Nm
process itself. The
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.Nm
command should be run in the background.
If successful, the command will not return.
Otherwise, an error message will be printed.
.Pp
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To "unconfigure" the memory disk, just kill the background
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.Nm
process started earlier.
.Sh FILES
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.Bl -tag -width /etc/rmd?? -compact
.It Pa /dev/rmd??
.It Pa /dev/md??
.El
.Sh EXAMPLES
.Pp
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.Dl mdconfig /dev/md0a 2048 &
.Pp
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Configures the memory disk
.Pa md0a
with one megabyte of user-space memory.
.Sh BUGS
The special device will become inoperative if the
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.Nm
process is killed while the special device is open.
.Sh SEE ALSO
.Xr swapon 8 ,
.Xr mount 8 ,
.Xr umount 8 .