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hotswap - register and unregister hotswappable IDE hardware
hotswap [ -c | --ide-controller N] [-h | --help] [-n | --nocheck] [-v |
--verbose] [-V | --version] [ACTION]
hotswap allows you to register and unregister hotswappable IDE devices,
for example notebook computer modules, with the Linux kernel.
It has been developed on and for a Dell Latitude C600, but does not
rely on any specific properties of that machine.
By default, the command line utility guides you through the hotswapping
process interactively. It is also possible to specify an ACTION, for
example unregistering the current device, rescanning the IDE bus, &c.
This feature is primarily intended for use with scripts and GUI
frontends such as xhotswap(1).
By using an XML configuration file, system administrators can specify
arbitrary shell scripts to be run before and after registering and
unregistering devices. This is particularly helpful for automatic
configuration of CD-RW drives, which require SCSI emulation and bypass
normal access via the IDE subsystem. By default, the configuration file
is located at /etc/hotswaprc; its syntax is described in hotswaprc(5).
The program follows the usual GNU command line syntax, with long
options starting with two dashes (`-').
-c, --ide-controller N
Use IDE controller N.
Print a brief help text and exit successfully.
Do not perform sanity checks before attempting an action. Use
with care, as this option may cause some steps to fail silently.
Print more information.
Print version information and exit successfully.
Besides the above options, the program allows you to specify one of the
following actions on the command line:
Detect the currently configured IDE device.
Detect whether a file system on the currently configured IDE
device is mounted.
Unregister the currently configured IDE device.
Scan the IDE bus for a new device. If a device has been found,
register it with the kernel.
If no ACTION is specified, interactive mode is entered. In this mode
the program guides you through the hotswapping process as appropriate
for the current configuration.
There is generally no need to manage floppy disk devices. The FDC is
always present and configured. Floppy disk drives do not connect to the
IDE controller, even if they come in the same modules as IDE devices
and use the same connector.
The Linux kernel requires hotswappable devices to be the only device
connected to their IDE controller.
The mounted-ide action assumes file systems have been mounted as
/dev/hdc. If this is not the case (i.e., you've used a symbolic link
such as /dev/cdrom) the command will not work.
The default location for the XML configuration file.
Report bugs to email@example.com.
Written by Tim Stadelmann.
This manual page is based on an earlier version kindly contributed by
xhotswap(1), hdparm(8), hotswaprc(5).
Copyright (c) 2002-2003 Wouter Verhelst, Tim Stadelmann.
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU General Public License (GPL), Version 2 or
any later version published by the Free Software Foundation.
4th November 2002 HOTSWAP(1)