2012-10-16 3:57, Heinrich van Riel wrote:
Understood, if full backups are executed weekly/monthly no scrub is required.
I'd argue that this is not a completely true statement. It might hold for raidzN backing storage with single-copy blocks, but if mirrors and/or two or three copies are involved (i.e. for metadata blocks) or ditto blocks on deduped pools, you have say a 50/50 or 33/67 chance of only reading once a particular copy of a block during the backup'ing procedure, and if errors hide in other copies - you'll miss them. That's where scrub should shine, by enforcing reads of all copies of all blocks while walking the block pointer tree of the pool. Hope I'm correct ;) //Jim _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
