aoe-mkdevs.8

.TH aoe-mkdevs 8
.SH NAME
aoe-mkdevs \- create special device files for aoe driver
.SH SYNOPSIS
.nf
.B aoe-mkdevs {device-dir}
.B env n_partitions=1 aoe-mkdevs {device-dir}
.fi
.SH DESCRIPTION
The
.I aoe-mkdevs
command is deprecated in favor of udev.  Systems with udev do not need
to use the \fIaoe-mkdevs\fP or \fIaoe-mkshelf\fP commands, because udev
will create device nodes as needed.
.PP
Systems without udev use \fIaoe-mkdevs\fP to create the character
special files necessary to 
control the aoe driver.  The \fIaoe-mkdevs\fP command uses 
.I aoe-mkshelf
to also create block special files.
.PP
The aoe drivers after version 49 support dynamic minor device numbers
so that a greater number of devices can be supported.  The
\fIaoe-mkdevs\fP command is incompatible with dynamic device numbers.
If your system lacks udev, and you are using an aoe driver version 50
or above, use the aoe_dyndevs=0 module option to force the aoe driver
to use static device numbers.
.PP
If you are not using dynamic device numbers, and you built your aoe
driver to support only one partition per device 
(whole-disk 
partitions), then the device files must match, and you should use the 
.I n_partitions
environment variable described below.
.SS Arguments
.TP
\fBdevice-dir\fP
This should be the name of the directory where the special device files
will be created.
.SH ENVIRONMENT VARIABLES
If the
.I n_partitions
variable is set in the environment, it will override the default
number of partitions per aoe disk, namely 16.
.SH EXAMPLE
In this example, the root user on a host named
.I nai
creates special files for using the aoe disks in shelf 7.  After
remembering that the driver doesn't have partition support, this
sysadmin gets rid of the mismatching device nodes and calls
\fIaoe-mkdevs\fP again with \fIn_partitions\fP set to 1.
.IP
.EX
.nf
nai:~# rm \-rf /dev/etherd
nai:~# aoe-mkdevs /dev/etherd
nai:~# ls /dev/etherd | wc \-l
1603
nai:~# rm \-rf /dev/etherd
nai:~# n_partitions=1 aoe-mkdevs /dev/etherd
nai:~# ls /dev/etherd | wc \-l
103
.fi
.EE
.SH "SEE ALSO"
.IR aoe-discover (8),
.IR aoe-interfaces (8),
.IR aoe-mkshelf (8),
.IR aoe-stat (8),
.IR aoetools (8),
.IR udev (7).
.SH AUTHOR
Ed L. Cashin (ecashin@coraid.com)