Unmount DVD when pressing eject button on drive?

Question

I'm running XFCE 4.8 and wondering if there's a way to have the system unmount a DVD and eject it when I press the physical button on the drive.  I seem to remember this working in 4.6 when Thunar's volume manager was running.  It is particularly annoying when I pop in a video DVD, play it in Totem (which mounts it), and then have to open a Thunar window to eject it.

Answer 1

light0 wrote:Someone wrote a kludge script to fix it
I am not sure the script solves the issue; the command 'eject /dev/sr0', in the script called by the udev rule, doesn't work for me if the device was busy before the eject button was pushed. Because the umount command called by eject will not operates in this case and the mount point stays there.
I think this is a bug in the default udev rule '/usr/lib/udev/rules.d/60-cdrom_id.rules' which ejects the CD/DVD when the button is pressed even when a file system on it is mounted and even if it is busy! This rule should be changed (or the cdrom_id binary) to not act in these cases.
Presently I think the only way to work around this, is to comment out the line:
ENV{DISK_EJECT_REQUEST}=="?*", RUN+="cdrom_id --eject-media $devnode", GOTO="cdrom_end"
To do that:
# cp /usr/lib/udev/rules.d/60-cdrom_id.rules /etc/udev/rules.d
# cd /etc/udev/rules.d
# vim 60-cdrom_id.rules
# diff 60-cdrom_id.rules /usr/lib/udev/rules.d/60-cdrom_id.rules
12c12
< #ENV{DISK_EJECT_REQUEST}=="?*", RUN+="cdrom_id --eject-media $devnode", GOTO="cdrom_end"
> ENV{DISK_EJECT_REQUEST}=="?*", RUN+="cdrom_id --eject-media $devnode", GOTO="cdrom_end"
# udevadm control --reload
The rule in /etc/udev will take precedence over the one in /usr/lib/udev and will not be overwritten by an systemd update.
Edit: In fact this is not the solution either; see next post.
Last edited by berbae (2014-09-26 12:58:28)