>> Is there some reason why a small read on a raidz2 is not statistically very >> likely to require I/O on only one device? Assuming a non-degraded pool of >> course. > >ZFS stores its checksums for RAIDZ/RAIDZ2 in such a way that all disks must be >read to compute and verify the checksum.
But why do ZFS reads require the computation of the RAIDZ checksum? If the block checksum is fine, then you need not care about the parity. Casper _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
