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MFC r257165 (by jmg@):

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Document that -a will output the device name when -u is not specified..
when -u is specified it is not...

update the docs to say that you can use full device names w/ -u, and
update the examples...

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
trasz 2015-10-18 14:46:12 +00:00
parent a3a538f354
commit 2c5302d9d9
1 changed files with 12 additions and 6 deletions
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18
sbin/mdconfig/mdconfig.8
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@ -89,6 +89,9 @@ Options indicate an action to be performed:
Attach a memory disk.
This will configure and attach a memory disk with the
parameters specified and attach it to the system.
If the
.Fl u Ar unit
option is not provided, the newly created device name will be printed on stdout.
.It Fl d
Detach a memory disk from the system and release all resources.
.It Fl r
@ -209,9 +212,12 @@ that might adversely affect the system.
Enable/disable readonly mode.
.El
.It Fl u Ar unit
Request a specific unit number for the
Request a specific unit number or device name for the
.Xr md 4
device instead of automatic allocation.
If a device name is specified, it must be start with
.Dq md
followed by the unit number.
.El
.Pp
The last form,
@ -237,19 +243,19 @@ with
.Pa /tmp/boot.flp
as backing storage:
.Pp
.Dl mdconfig -a -t vnode -f /tmp/boot.flp -u 4
.Dl mdconfig -a -t vnode -f /tmp/boot.flp -u md4
.Pp
Detach and free all resources used by
.Pa /dev/md4 :
.Pp
.Dl mdconfig -d -u 4
.Dl mdconfig -d -u md4
.Pp
Create a 128MByte swap backed disk, initialize an
.Xr ffs 7
file system on it, and mount it on
.Pa /tmp :
.Bd -literal -offset indent
mdconfig -a -t swap -s 128M -u 10
mdconfig -a -t swap -s 128M -u md10
newfs -U /dev/md10
mount /dev/md10 /tmp
chmod 1777 /tmp
@ -263,7 +269,7 @@ are implied
.Pc :
.Bd -literal -offset indent
dd if=/dev/zero of=somebackingfile bs=1k count=5k
mdconfig -f somebackingfile -u 0
mdconfig -f somebackingfile -u md0
bsdlabel -w md0 auto
newfs md0c
mount /dev/md0c /mnt
@ -290,7 +296,7 @@ is used to skip over the header information, positioning
.Pa md1.nop
to the start of the filesystem in the image.
.Bd -literal -offset indent
mdconfig -f diskimage.img -u 1
mdconfig -f diskimage.img -u md1
gnop create -o 512K md1
mount /dev/md1.nop /mnt
.Ed