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 [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.
-fconfig_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
ccdconfigto 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 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 creating 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
HISTORY
The ccdconfig command first appeared in
NetBSD 1.1.