Messages in this thread | | | Date | Tue, 4 Nov 2008 21:20:11 +0100 | From | Pavel Machek <> | Subject | Re: data corruption: revalidating a (removable) hdd/flash on re-insert |
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> >> Every access to removable media is guarded by this revalidation check. > >> If you don't see these events, you should not trust this reader, and > >> at least never change the media while it is connected. > > > > This is rather nasty data-corrupter. > > Sure, it is. > > > Could we at least blacklist > > broken device, and force revalidation on each close or something like > > that? > > What's your idea of revalidation if the hardware does not tell you? > Get an md5 of the disk content? :)
Well... you should not eject media while fs is mounted or blockdev is open, correct?
So can we simply claim 'media changed' on last close/unmount? Sure, sometimes media was not changed, but that only hurts performance, not correctness... ? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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