updfstab - update /etc/fstab to reflect removable devices
Devices which updfstab adds to /etc/fstab are marked with the kudzu mount option to distinguish them from other devices. updfstab will not remove devices from /etc/fstab unless they are marked with the kudzu mount option. It also ignores devices that are already listed in /etc/fstab, or which have multiple partitions on the media currently inserted.
Normally, updfstab tries to touch /etc/fstab as little as possible. When this option is given, it will instead move all of the devices with the kudzu mount option to the end of the file, and will list the devices in the same order the internal probe returns.
When this option is specified, updstab does not update the /etc/fstab file. Instead, it displays the fstab entries it would use to standard out. If no changes need to be made, it outputs the string (nothing to do) rather then a full filesystem table.
The devices updfstab looks for are specified by its configuration file, /etc/updfstab.conf by default. It defines a number of devices which updfstab looks for on the system, along with various attributes of that device. If a single device name is given multiple times, later values override those given earlier. However, match directives accumulate; all specified matches remain in effect for that device. The default value of flags may be changed by specifying a new value for that flag outside of any device section, which changes the default for all future devices.
A simple configuration file looks like this:
# sample updfstab configuration file symlink false device cdrom { symlink true match cdrom } device zip { match hd zip match floppy "zip" }
Here two devices are specified, cdrom and zip. If a cdrom device is found on the system, a /dev/cdrom is created pointing to the /dev entry for the device, and /mnt/cdrom is added to /etc/fstab. The next entry looks for hard drive devices with zip in their description as well as floppy devices with zip in their description. If either is found /mnt/zip is added to /etc/fstab, but no symlink is created.
Here is the complete list of directives which may be used:
/etc/fstab /etc/updfstab.conf /proc/partitions
Erik Troan <ewt@redhat.com>
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