Messages in this thread | | | Date | Tue, 24 Apr 2001 17:08:12 +0100 | From | Dale Amon <> | Subject | Re: Idea: Encryption plugin architecture for file-systems |
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On Mon, Apr 23, 2001 at 09:54:34PM -0500, David L. Nicol wrote: > why not port one of the twenty or thirty preexisting tools > that let you mount a filesystem from an encrypted file instead > of making a generic layer? That way you could have inter-os > portability. The steganographic ones make really impressive > claims.
I'm doing an 18GB raid file system. The standard loopback is working fine. What I am unsure of is the bobustness against lost blocks when running "on the metal" vs interposing another file system layer.
I suspect the answer is that each block is individually encrypted, so that the worst case data loss is the same; that an ext2 on top of an encrypted partition would be no worse off than the same file system without the interposed layer. Both would find a bad block and do their best.
But my knowledge of how the loopbacks are structured is not good enough for me to say this with confidence. That's why I'm asking here: in hopes that someone who really does know can say something about the worst case data loses.
-- ------------------------------------------------------ Use Linux: A computer Dale Amon, CEO/MD is a terrible thing Village Networking Ltd to waste. Belfast, Northern Ireland ------------------------------------------------------ - 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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