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

     ccdconfig -- configuration utility for the concatenated disk driver

     ccdconfig [-cv] ccd ileave [flags] dev [...]
     ccdconfig -C [-v] [-f config_file]
     ccdconfig -u [-v] ccd [...]
     ccdconfig -U [-v] [-f config_file]
     ccdconfig -g [ccd [...]]

     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.

     -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.  An interleave factor of 0
     means that the devices are concatenated serially, not interleaved.  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

           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.

     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.

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

     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

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

     The ccdconfig command first appeared in NetBSD 1.1.

NetBSD 8.1                      August 13, 2014                     NetBSD 8.1

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