Re: add/remove actions for usb devices

[Florian Iragne <florian.iragne@labri.fr>]

Greg KH wrote:

>On Fri, Mar 26, 2004 at 08:44:56PM +0100, Florian Iragne wrote:
>  
>
>>Hello everybody,
>>
>>i've just a simple question and i didn't find any clues about the answer 
>>on the internet, so i ask you : why is there no "remove" action for usb 
>>devices with hotplug?
>>    
>>
>
>The remove event happens just fine.  It's just that the current scripts
>don't do anything with it :)
>
>  
>
>>my current problem is that i looking for a solution to mount/umount 
>>usb-storage devices automagically when they are plugged/unplugged, but 
>>since there is no remove event, i must write a complex script to do it 
>>(currently working on 2.6.4-ck1 and udev).
>>    
>>
>
>But there is an event.  You can catch it on your own if you want.  Just
>put your script in /etc/hotplug.d/usb/
>
>  
>
well actually, i've already try this and never catch the remove event. 
just to test i've made this single script :
if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
  echo "add" >> /var/log/hotplug
fi

if [ "$ACTION" = "remove" -a "$TYPE" = "usb" ]; then
    echo "remove">>/var/log/hotplug
fi

i do catch the add, but no trace of remove action in the log

>Or if you want to catch the fact when udev removes a /dev node (which
>odds are is what you really want to catch), put your script, or a link
>to it in /etc/dev.d/block/ with the extension .dev and you will get both
>add and remove events that corrisponded to a udev create or remove
>device node.
>  
>
yes, i think it's a better way, since currently i have to add a "sleep 
10" instruction to wait for udev to create th node i want to move

>Hope this helps,
>
>greg k-h
>  
>

thanks a lot, i will try this!

Florian


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