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CCDCONFIG(8)		OpenBSD 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]

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 all ccd devices listed in the ccd configuration file.

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

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

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

     -u	     Unconfigure a ccd.

     -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:

	   CCDF_SWAP	  0x01	    Interleave should be dmmax.
	   CCDF_UNIFORM	  0x02	    Use uniform interleave.
	   CCDF_MIRROR	  0x04	    Enable data mirroring.

     The format in the configuration file appears exactly as if it were
     entered on the command line.  Note that on the command line and in the
     configuration file, the flags argument is optional.

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

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

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

SEE ALSO
     ccd(4), rc(8)

HISTORY
     The ccdconfig command first appeared in NetBSD 1.0a.

OpenBSD 4.9			 June 26, 2008			   OpenBSD 4.9

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