After reading through the ZFS slides, it appears to be the case that if ZFS wants to modify a single data block, if must rewrite every block between that modified block and the uberblock (root of the tree).
Is this really the case? If so, does this mean that every commit operation (ie every fsync()) in ZFS requires O(log n) platter writes? Thanks, - a -- PGP/GPG: 5C9F F366 C9CF 2145 E770 B1B8 EFB1 462D A146 C380 _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
