Messages in this thread | | | Date | Mon, 2 Apr 2007 21:36:06 +0200 | From | Pavel Machek <> | Subject | Re: USB: on suspend to ram/disk all usb devices are replugged |
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Hi!
> > But you're still likely to run into trouble if you unplug a storage > > device, move it to another system and write on it, then plug it back into > > the original system. The PLVM would somehow have to recognize that the > > data had been changed. I don't know a foolproof way of doing that. > > > > Mark the filesystem as in-use with a one-time UUID in the superblock at > mount time. If one moved the drive to another system it would require > an fsck to clear the UUID before the other system could use it; then > the original machine would refuse to use the drive when the UUID didn't > match on resume.
You still need fs-specific code, I'm afraid... plus userland tool to reset signatures back.
Patches welcome. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - 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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