On Thu, Jul 20, 2006 at 03:45:54PM -0700, Jeff Bonwick wrote: > > However, we do have the advantage of always knowing when something > > is corrupted, and knowing what that particular block should have been. > > We also have ditto blocks for all metadata, so that even if any block > of ZFS metadata is destroyed, we always have another copy. > Bill Moore describes ditto blocks in detail here: > > http://blogs.sun.com/roller/page/bill?entry=ditto_blocks_the_amazing_tape
Right. And I should point out that if Eric had been running build 38 or later, this data corruption would not have happened - it would have been automatically repaired using ditto blocks (the bad block was a L2 indirect block - of which there would have been 2 copies). --Bill _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
