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Dd July 8, 1993
Dt MDCONFIG 8
Os
Sh NAME
Nm mdconfig
Nd configure MEMORY disks
Sh SYNOPSIS
Nm
Ar special_file
Ar 512-byte-blocks
Sh DESCRIPTION
The
Nm
command configures memory disk devices.
It will associate the special file
Ar special_file
with a range of user-virtual memory allocated by the
Nm
process itself.  The
Nm
command should be run in the background.
If successful, the command will not return.
Otherwise, an error message will be printed.
Pp
To "unconfigure" the memory disk, just kill the background
Nm
process started earlier.
Sh FILES
Bl -tag -width /etc/rmd?? -compact
It Pa /dev/rmd??
It Pa /dev/md??
El
Sh EXAMPLES
Dl mdconfig /dev/md0c 2048 &
Pp
Configures the memory disk
Pa md0c
with one megabyte of user-space memory.
Sh SEE ALSO
Xr mount 8 ,
Xr swapon 8 ,
Xr umount 8
Sh BUGS
The special device will become inoperative if the
Nm
process is killed while the special device is open.

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