2004-01-13 00:17:30 +03:00
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.\" $NetBSD: md.4,v 1.4 2004/01/12 21:17:30 wiz Exp $
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1997-04-11 09:26:25 +04:00
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.\"
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.\" This file is in the public domain.
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.\"
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2004-01-13 00:17:30 +03:00
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.Dd January 12, 2004
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1997-04-11 09:26:25 +04:00
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.Dt MD 4
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1999-03-16 04:19:14 +03:00
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.Os
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1997-04-11 09:26:25 +04:00
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.Sh NAME
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.Nm md
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.Nd memory disk driver
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.Sh SYNOPSIS
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.Cd "pseudo-device md"
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.Sh DESCRIPTION
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The
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.Nm
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driver enables use of system or user memory as a disk.
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Memory for the disk must be allocated within the kernel or with
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.Xr mdconfig 8
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before the
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.Nm
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device may be used as a disk.
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2004-01-12 23:03:39 +03:00
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Its behaviour is configured by the kernel options
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2004-01-13 00:17:30 +03:00
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.Sy MEMORY_DISK_HOOKS ,
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.Sy MEMORY_DISK_IS_ROOT ,
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.Sy MEMORY_DISK_ROOT_SIZE ,
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.Sy MEMORY_DISK_DYNAMIC ,
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2004-01-12 23:03:39 +03:00
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and
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.Sy MEMORY_DISK_SERVER .
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1997-04-11 09:26:25 +04:00
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.Sh FILES
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.Bl -tag -width /dev/rmdX -compact
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.It Pa "/dev/md??"
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block mode memory disk devices.
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.It Pa "/dev/rmd??"
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raw mode memory disk devices.
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.El
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.Sh SEE ALSO
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2004-01-13 00:17:30 +03:00
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.Xr options 4 ,
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1997-04-11 09:26:25 +04:00
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.Xr mdconfig 8 ,
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2004-01-13 00:17:30 +03:00
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.Xr mdsetimage 8
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