Re: Cryptographically verifying a btrfs subvolume

[Johannes Thumshirn <jthumshirn@suse.de>]

On Mon, Apr 08, 2019 at 01:49:49PM +0000, Leonid Bloch wrote:
> Thanks for letting know! Btrfs inspect-internal csum-dump indeed sounds 
> awesome! Recursively, on a subvolume that would be perfect. Let me know 
> if help is needed.

Well actually the intention of this part was mostly to have a proper way of
verifying the checksums we write in the checksum tree.

I have a patchset in development that adds SHA-256 in the mix (it's actually
very similar to the patch you've referenced).

Apart from SHA-256 I want to have a not cryptographically secure checksum as
well which would help detecting duplicate extents and can be used for
de-duplication.

But this patchset is not anywhere near I can (or better want to) show to
someone.

Thanks for your patience.
	Johannes
-- 
Johannes Thumshirn                            SUSE Labs Filesystems
jthumshirn@suse.de                                +49 911 74053 689
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