Hello all, I was describing how raidzN works recently, and got myself wondering: does zpool scrub verify all the parity sectors and the mirror halves? That is, IIRC, the scrub should try to read all allocated blocks and if they are read in OK - fine; if not - fix in-place with redundant data or copies, if available.
On the other hand, if the first tested mirror half/block copy/raidzN permutation has yielded no errors, are other variants still checked? The descriptions I've seen so far put an emphasis on verifying all copies of the blocks and probably all the mirror halves - perhaps because these examples make it easier to describe the concept. I don't think I saw a statement that for raidzN blocks all of the combinations are verified to work (plain userdata sectors, and parity permutations with these sectors). Can someone in the know say "yes"? ;) Thanks, //Jim _______________________________________________ zfs-discuss mailing list firstname.lastname@example.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss