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+# Copyright (c) 2012 Edward Tomasz NapieraƂa <trasz@FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+# This is a test for mdconfig(8) functionality. Run it as root:
+#
+# /usr/src/tools/regression/mdconfig/run /usr/src/tools/regression/mdconfig/mdconfig.test
+#
+# WARNING: Creates files in unsafe way.
+
+$ whoami
+> root
+$ umask 022
+$ truncate -s 1gb xxx
+
+$ mdconfig -l
+
+$ mdconfig -af xxx
+> md0
+
+# This awk thing is to strip the file path.
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 vnode 1024M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 1073741824 # mediasize in bytes (1.0G)
+> 2097152 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Check different valid syntax variations: implicit -a.
+
+$ mdconfig xxx
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 vnode 1024M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 1073741824 # mediasize in bytes (1.0G)
+> 2097152 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Explicit -t vnode.
+
+$ mdconfig -a -t vnode -f xxx
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 vnode 1024M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 1073741824 # mediasize in bytes (1.0G)
+> 2097152 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Size for vnodes - smaller than the actual file.
+
+$ mdconfig -a -t vnode -f xxx -s 128m
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 vnode 128M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 134217728 # mediasize in bytes (128M)
+> 262144 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Size for vnodes - larger than the actual file.
+
+$ mdconfig -a -t vnode -f xxx -s 128g
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 vnode 128G
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 137438953472 # mediasize in bytes (128G)
+> 268435456 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Sector size for vnodes.
+
+$ mdconfig -a -t vnode -f xxx -S 2048
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 vnode 1024M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 2048 # sectorsize
+> 1073741824 # mediasize in bytes (1.0G)
+> 524288 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Malloc type.
+
+$ mdconfig -a -t malloc -s 1g
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 malloc 1024M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 1073741824 # mediasize in bytes (1.0G)
+> 2097152 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+# Swap type.
+
+$ mdconfig -a -t swap -s 1g
+> md0
+
+$ mdconfig -lv | awk '{ print $1, $2, $3 }'
+> md0 swap 1024M
+
+$ diskinfo -v /dev/md0 | expand
+> /dev/md0
+> 512 # sectorsize
+> 1073741824 # mediasize in bytes (1.0G)
+> 2097152 # mediasize in sectors
+> 0 # stripesize
+> 0 # stripeoffset
+>
+
+$ mdconfig -du 0
+
+$ rm xxx