ggatel(8) [freebsd man page]

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

NAME

     ggatel -- GEOM Gate local control utility

SYNOPSIS

     ggatel create [-v] [-o ro | wo | rw] [-s sectorsize] [-t timeout] [-u unit] path
     ggatel attach [-v] [-o ro | wo | rw] -u unit path
     ggatel destroy [-f] -u unit
     ggatel list [-v] [-u unit]

DESCRIPTION

     The ggatel utility is a local GEOM Gate class consumer.  It can be used as a replacement for md(4) devices or as a ``GEOMificator'' for non
     GEOM-aware devices, but it was mainly created as an example on how to use and how to communicate with the GEOM Gate kernel module.

     Available commands:

     create   Create a ggate provider related to the given regular file or device.

     attach   Attach a worker process to an existing ggate provider.

     destroy  Destroy the given ggate provider.

     list     List ggate providers.

     Available options:

     -f 	      Forcibly destroy ggate provider (cancels all pending requests).

     -o ro | wo | rw  Specify permission to use when opening the file or device: read-only (ro), write-only (wo), or read-write (rw).  Default is
		      rw.

     -s sectorsize    Sector size for ggate provider.  If not specified, it is taken from device, or set to 512 bytes for files.

     -t timeout       Number of seconds to wait before an I/O request will be canceled.  0 means no timeout.  Default is 30.

     -u unit	      Unit number to use.

     -v 	      Do not fork, run in foreground and print debug informations on standard output.

     path	      Path to a regular file or device.

EXIT STATUS

     Exit status is 0 on success, or 1 if the command fails.  To get details about the failure, ggatel should be called with the -v option.

EXAMPLES

     ``GEOMify'' the ``fd0'' device and use gbde(8) to encrypt data on a floppy.

	   ggatel create -u 5 /dev/fd0
	   gbde init /dev/ggate5
	   gbde attach ggate5
	   newfs /dev/ggate5.bde
	   mount /dev/ggate5.bde /secret
	   cp /private/foo /secret/
	   umount /secret
	   gbde detach ggate5
	   ggatel destroy -u 5

SEE ALSO

     geom(4), gbde(8), ggatec(8), ggated(8), mount(8), newfs(8)

AUTHORS

     The ggatel utility as well as this manual page was written by Pawel Jakub Dawidek <pjd@FreeBSD.org>.

BSD
								   April 2, 2011							       BSD

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

NAME

     gconcat -- disk concatenation control utility

SYNOPSIS

     gconcat create [-v] name prov ...
     gconcat destroy [-fv] name ...
     gconcat label [-hv] name prov ...
     gconcat stop [-fv] name ...
     gconcat clear [-v] prov ...
     gconcat dump prov ...
     gconcat list
     gconcat status
     gconcat load
     gconcat unload

DESCRIPTION

     The gconcat utility is used for device concatenation configuration.  The concatenation can be configured using two different methods:
     ``manual'' or ``automatic''.  When using the ``manual'' method, no metadata are stored on the devices, so the concatenated device has to be
     configured by hand every time it is needed.  The ``automatic'' method uses on-disk metadata to detect devices.  Once devices are labeled,
     they will be automatically detected and configured.

     The first argument to gconcat indicates an action to be performed:

     create   Concatenate the given devices with specified name.  This is the ``manual'' method.  The kernel module geom_concat.ko will be loaded
	      if it is not loaded already.

     label    Concatenate the given devices with the specified name.  This is the ``automatic'' method, where metadata are stored in every
	      device's last sector.  The kernel module geom_concat.ko will be loaded if it is not loaded already.

     stop     Turn off existing concatenate device by its name.  This command does not touch on-disk metadata!

     destroy  Same as stop.

     clear    Clear metadata on the given devices.

     dump     Dump metadata stored on the given devices.

     list     See geom(8).

     status   See geom(8).

     load     See geom(8).

     unload   See geom(8).

     Additional options:

     -f      Force the removal of the specified concatenated device.

     -h      Hardcode providers' names in metadata.

     -v      Be more verbose.

SYSCTL VARIABLES

     The following sysctl(8) variables can be used to control the behavior of the CONCAT GEOM class.  The default value is shown next to each
     variable.

     kern.geom.concat.debug: 0
	     Debug level of the CONCAT GEOM class.  This can be set to a number between 0 and 3 inclusive.  If set to 0 minimal debug information
	     is printed, and if set to 3 the maximum amount of debug information is printed.

EXIT STATUS

     Exit status is 0 on success, and 1 if the command fails.

EXAMPLES

     The following example shows how to configure four disks for automatic concatenation, create a file system on it, and mount it:

	   gconcat label -v data /dev/da0 /dev/da1 /dev/da2 /dev/da3
	   newfs /dev/concat/data
	   mount /dev/concat/data /mnt
	   [...]
	   umount /mnt
	   gconcat stop data
	   gconcat unload

     Configure concatenated provider on one disk only.	Create file system.  Add two more disks and extend existing file system.

	   gconcat label data /dev/da0
	   newfs /dev/concat/data
	   gconcat label data /dev/da0 /dev/da1 /dev/da2
	   growfs /dev/concat/data

SEE ALSO

     geom(4), loader.conf(5), geom(8), growfs(8), gvinum(8), mount(8), newfs(8), sysctl(8), umount(8)

HISTORY

     The gconcat utility appeared in FreeBSD 5.3.

AUTHORS

     Pawel Jakub Dawidek <pjd@FreeBSD.org>

BSD
								   May 21, 2004 							       BSD