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aoe-mkdevs(8) [debian man page]

aoe-mkdevs(8)						      System Manager's Manual						     aoe-mkdevs(8)

NAME

       aoe-mkdevs - create special device files for aoe driver

SYNOPSIS

       aoe-mkdevs {device-dir}
       env n_partitions=1 aoe-mkdevs {device-dir}

DESCRIPTION

       The aoe-mkdevs command is deprecated in favor of udev.  Systems with udev do not need to use the aoe-mkdevs or aoe-mkself commands, because
       udev will create device nodes as needed.

       Systems without udev use aoe-mkdevs to create the character special files necessary to control the aoe driver.  The aoe-mkdevs command uses
       aoe-mkshelf to also create block special files.

       The aoe drivers after version 49 support dynamic minor device numbers so that a greater number of devices can be supported.  The aoe-mkdevs
       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.

       If  you	are  not  using  dynamic device numbers, and you built your aoe driver to support only one partition per device (whole-disk parti-
       tions), then the device files must match, and you should use the n_partitions environment variable described below.

   Arguments
       device-dir
	      This should be the name of the directory where the special device files will be created.

ENVIRONMENT VARIABLES

       If the n_partitions variable is set in the environment, it will override the default number of partitions per aoe disk, namely 16.

EXAMPLE

       In this example, the root user on a host named 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 aoe-mkdevs again with n_partitions
       set to 1.

	      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

SEE ALSO

       aoe-discover(8), aoe-interfaces(8), aoe-mkshelf(8), aoe-stat(8), aoetools(8), udev(7).

AUTHOR

       Ed L. Cashin (ecashin@coraid.com)

																     aoe-mkdevs(8)

Check Out this Related Man Page

mknod(8)						      System Manager's Manual							  mknod(8)

NAME

       mknod - Creates a special file

SYNOPSIS

       /usr/sbin/mknod special_file [ b major_device# minor_device# |  c major_device# minor_device#]

       /usr/sbin/mknod filename p

DESCRIPTION

       The  mknod  command makes a directory entry.  The first argument is the name of the special device file.  Select a name that is descriptive
       of the device.

       The mknod command has two forms.  In the first form, the second argument is the b or c flag.  The last two arguments are numbers specifying
       the major_device, which helps the operating system find the device driver code, and the minor_device, the unit drive, or line number, which
       may be either decimal or octal.

       The assignment of major device numbers is specific to each system.  You can determine the device numbers by  examining  the  conf.c  system
       source file.  If you change the contents of the conf.c file to add a device driver, you must rebuild the kernel.

       In the second form of mknod, you use the p flag to create named pipes (FIFOs).

       Only the superuser can create a character or device special file.

FLAGS

       Indicates  that	the  special  file  corresponds to a block-oriented device (disk or tape) Indicates that the special file corresponds to a
       character-oriented device Creates named pipes (FIFOs)

EXAMPLES

       To create the special file for a new drive, /dev/disk/dsk20, with a major device number of 1 and a minor device number of 2,  enter:  mknod
       /dev/disk/dsk20	b   1	2 This command creates the special file, /dev/disk/dsk20, which is a block special file with major device number 1
       and minor device number 2.  To create a pipe named fifo, enter: mknod fifo p This command creates the pipe fifo, which is  not  necessarily
       in the current directory.

FILES

       Specifies the command path Specifies the system device numbers specification file delim off

																	  mknod(8)
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