Bug#389892: writing_udev_rules: just unplug the card reader and

Bug#389892: writing_udev_rules: just unplug the card reader and

[Dan Jacobson]

X-debbugs-cc: dan@reactivated.net, linux-hotplug-devel@lists.sourceforge.net, greg@kroah.com
Package: udev
Version: 0.100-1
Severity: normal
File: /usr/share/doc/udev/writing_udev_rules/index.html

Regarding

     USB Card Reader

     These devices typically do not inform the host computer upon
     media change. So, if you plug in the device with no media, and
     then insert a card, the computer does not realise, and you do not
     have your mountable sdb1 partition node for the media.

     One possible solution is to take advantage of the all_partitions
     option, which will create 16 partition nodes for every block
     device that the rule matches:

	 BUS="usb", SYSFS{product}="USB 2.0 CompactFlash Reader",
	 SYMLINK+="cfrdr%n", OPTIONS+="all_partitions"

     You will now have nodes named: cfrdr, cfrdr1, cfrdr2, cfrdr3,
     ..., cfrdr15.


I would say 10000 times less complicated would be to tell the user to
forget trying to understand all this, and

1. umount(8) cards already mounted on the reader, if any.
2. Unplug the reader from the USB socket.
3. Insert any additional cards into the reader.
4. Plug the reader back into the USB socket.
5. mount(8) your cards again.

That's all.

Sorry, but that's the view from us less sophisticated users.

=======
(By the way, one even wonders if BUS above should be SUBSYSTEMS.
and one also wants to match all card readers, no matter the brand.

Also say what one has to do after one writes a rule. restart udevd?
reboot? for it to take effect.

But never mind. It is 10000 times easier to forget trying to
understand all this.)


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