Messages in this thread | | | Date | Thu, 30 Aug 2007 04:51:33 +0300 | From | Eduard-Gabriel Munteanu <> | Subject | Forced unmounting for removable devices |
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*This message was transferred with a trial version of CommuniGate(r) Pro* This might have been discussed a few years ago, but things have changed. I'm talking about patches like this one (I'm not the author): http://developer.osdl.org/dev/fumount/#kernel1
The current situation requires a way to forcibly unmount removable media. Consider the following (real) scenario. Someone has a box with hald + dbus + ivman to support "supermounting" the CDROM drive. He has to install a 2 CD application using Wine for example, but the setup application prevents normal unmounting of the first one. Then he goes on and pushes the button to eject the CD, lazy-unmounting the media. The kernel goes mad and all attempts to load the second CD fail (the kernel hasn't got rid of the first fs).
If there was anything like a real forced unmounting, things would have worked well, as on MS Windows itself.
As far as I can see, there is no other sane way to solve such problems. So, what's keeping such patches from making their way into the mainstream kernel? All (but maybe I haven't searched enough) arguments against such a feature that I've seen by now just say "it's not needed", "it's not worth it" and so on, and many of them refer to network mounts.
P.S.: I'm not saying lazy unmounting should be replaced. They both make sense, depending on the scenario. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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