NAME    [Toc]    [Back]

     ccdconfig - configuration utility for the concatenated  disk
driver

SYNOPSIS    [Toc]    [Back]

     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    [Toc]    [Back]

     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.  Only root can dump the
configuration
             (unless ccdconfig is made setgid kmem).

     -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
running kernel.

     -u      Unconfigure a ccd.

     -U      Unconfigure all ccd devices listed in 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:

           CCDF_SWAP      0x01      Interleave should be dmmax.
           CCDF_UNIFORM   0x02      Use uniform interleave.
           CCDF_MIRROR    0x04      Enable data mirroring.
           CCDF_OLD        0x08      Use old unoptimized I/O protocol.

     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    [Toc]    [Back]

     /etc/ccd.conf  default ccd configuration file

EXAMPLES    [Toc]    [Back]

     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    [Toc]    [Back]

     ccd(4), rc(8)

HISTORY    [Toc]    [Back]

     The ccdconfig command first appeared in NetBSD 1.0A.

OpenBSD      3.6                           July      17,     1995