unplugging devices safely?

[lou_g at softhome.net]

Martin Pitt writes: 

> Hi lou! 
> 
> lou_g at softhome.net [2004-11-12 18:20 -0700]:
>> Ok, so i was playing around with my ipod and HAL, when it comes to 
>> unplugging i just usually unplug (even when do not disconnect is flashing) 
>> as long as there is no disk activity (indicated by an icon on ipod screen). 
>> so i plugged it in, hotplug saw it, loaded modulespassed it to hal and hal 
>> opened nautillus (via gvm) (or however it works).
>> I then unplugged it (as described above) and checked th eloaded modules, 
>> they still listed the firewire modules used for the ipod (i assuemd they'd 
>> get unloaded when the kernel noticed it had disappeared).
>> then i did "lshal | grep info.product to get  anice list of all my hardware 
>> HAL see's and noticed the ipod was still in the list (even though it was 
>> not pluggged).  
>> 
>> So my question is, is there a specific way to safely remove hardware so 
>> everything know's it's gone, if not, is there a planned system? 
> 
> Right now it _theoretically_ works to do "eject /dev/sda2" (or
> whichever device it is), this will really shutdown the link and make
> the "busy" message on the iPod disappear. "eject" in fact also works
> much better than just "unmount" on other USB/FireWire devices. I. e.
> the LED on my USB memory stick goes off when I eject it, which gives
> novice users a more comfortable feeling :-) 
> 
> I have a patch ready which would implement ejecting throughout GNOME,
> see 
> 
>   https://bugzilla.ubuntulinux.org/show_bug.cgi?id=2134 
> 
> The only drawback is that there is currently a kernel flaw which
> prevents this approach. With some devices eject/hal/whatever just
> hangs when ejecting a device. This can be reproduced particularly well
> with iPods, so YMMV. See 
> 
>   https://bugzilla.ubuntulinux.org/show_bug.cgi?id=1891 
> 
> for the relevant bug report. 
> 
> Martin

AAHHHHH, that does work very nicely, shame the kde Kio slave 'devices' 
doesn't support ejecting disks.. :(
But none the less, a small script in kicker for whenever i want to eject the 
ipod and we're away.. :D 

Thanks alot 

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