Sigh... Well, I wrote up a preliminary version of dm-checksum and then realized that I've pretty much just built a crappier version of dm-dedupe, but without the dedupe part. Given that it stores checksums in a btree which claims to be robust through failures and gives us automatic deduplication, I wonder if it we could achieve our aims by modifying dm-dedupe to verify the checksums on the read path? I guess it would be interesting to see how bad the performance hit is with the online dedupe part enabled or disabled. dm-dedupe v2 went out on the mailing list last August, which I missed. :( Unless... there's a specific reason nobody mentioned dm-dedupe here? --D -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
