Re: relling's Oct 2, 2009 3:26 Post: (1) Is this list everything? (2) Is this the same for U4? (3) If I change the zpool checksum property on creation as you indicated in your Oct 1, 12:51 post (evidently very recent versions only), does this change the checksums used for this list? Why would not the strongest checksum be used for the most fundamental data rather than fool around, allowing the user to compromise only when the tradeoff pays back on the 99% bulk of the data?
Re: "The big question, that is currently unanswered, is do we see single bit faults in disk-based storage systems?" I don't think this is the question. I believe the implication of schlie's post is not that single bit faults will get through, but that the current fletcher2 is equivalent to a single bit checksum. You could have 1,000 bits in error, or 4095, and still have a 50-50 chance of detecting it. A single bit error would be certain to be detected (I think) even with the current code. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
