> From: Richard Elling [mailto:richard.ell...@gmail.com] > > > Now suppose you have a raidz with 3 disks (disk1, disk2, disk3, where disk3 > > is resilvering). You find some way of ordering all the used blocks of > > disk1... Which means disk1 will be able to read in optimal order and speed. > > Sounds like prefetching :-)
Ok. Prefetch every used sector in the pool. Problem solved. Let the disks sort all the requests into on-disk order. Unless perhaps the number of requests would exceed the limits of what the drive is able to sort ... Which seems ... more than likely. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
