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CCDCONFIG(8)		  BSD System Manager's Manual		  CCDCONFIG(8)

NAME
     ccdconfig — configuration utility for the concatenated disk driver

SYNOPSIS
     ccdconfig [-cv] ccd ileave [flags] dev [...]
     ccdconfig -C [-v] [-f config_file]
     ccdconfig -u [-v] ccd [...]
     ccdconfig -U [-v] [-f config_file]
     ccdconfig -g [-M core] [-N system] [ccd [...]]

DESCRIPTION
     ccdconfig is used to dynamically configure and unconfigure concatenated
     disk devices, or ccds.  For more information about the ccd, see ccd(4).

     The options are as follows:

     -c	     Configure a ccd.  This is the default behavior of ccdconfig.

     -C	     Configure all ccd devices listed in the ccd configuration file.

     -f config_file
	     When configuring or unconfiguring all devices, read the file
	     config_file instead of the default /etc/ccd.conf.

     -g	     Dump the current ccd configuration in a format suitable for use
	     as the ccd configuration file.  If no arguments are specified,
	     every configured ccd is dumped.  Otherwise, the configuration of
	     each listed ccd is dumped.

     -M core
	     Extract values associated with the name list from core instead of
	     the default /dev/mem.

     -N system
	     Extract the name list from system instead of the default /netbsd.

     -u	     Unconfigure a ccd.

     -U	     Unconfigure all ccd devices listed the ccd configuration file.

     -v	     Causes ccdconfig to be verbose.

     A ccd is described on the command line and in the ccd configuration file
     by the name of the ccd, the interleave factor, the ccd configuration
     flags, and a list of one or more devices.	The flags may be represented
     as a decimal number, a hexadecimal number, a comma-separated list of
     strings, or the word “none”.  The flags are as follows:

	   Symbolic	    Numeric  Comment
	   CCDF_UNIFORM	    0x02     Use uniform interleave. The size of all
				     components is clamped to that of the
				     smallest component.
	   CCDF_NOLABEL	    0x04     Ignore raw disklabel. Useful when creat‐
				     ing a new ccd.

   /etc/ccd.conf
     The file /etc/ccd.conf is used to configure ccdconfig if -C or -U is
     used.  Each line of the configuration file contains arguments as per the
     -c argument: ccd ileave [flags] dev [...]

     A ‘#’ is a comment, and everything to end of line is ignored.  A ‘\’ at
     the end of a line indicates that the next line should be concatenated
     with the current.	A ‘\’ preceding any character (other than the end of
     line) prevents that character's special meaning from taking effect.

     See EXAMPLES for an example of /etc/ccd.conf.

FILES
     /etc/ccd.conf - default ccd configuration file.

EXAMPLES
     The following command, executed from the command line, would configure
     ccd0 with 4 components (/dev/sd2e, /dev/sd3e, /dev/sd4e, /dev/sd5e), and
     an interleave factor of 32 blocks.

	   # ccdconfig ccd0 32 0 /dev/sd2e /dev/sd3e /dev/sd4e /dev/sd5e

     An example /etc/ccd.conf:

	   #
	   # /etc/ccd.conf
	   # Configuration file for concatenated disk devices
	   #

	   # ccd	   ileave  flags   component devices
	   ccd0		   16	   none	   /dev/sd2e /dev/sd3e

SEE ALSO
     ccd(4), ccd.conf(5), rc(8)

HISTORY
     The ccdconfig command first appeared in NetBSD 1.1.

BSD			       October 17, 2003				   BSD

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