On Fri, Oct 23, 2009 at 06:55:41PM -0500, Tim Cook wrote: > So, from what I gather, even though the documentation appears to state > otherwise, default checksums have been changed to SHA256. Making that > assumption, I have two questions.
That's false. The default checksum has changed from fletcher2 to fletcher4 that is to say, the definition of the value of 'on' has changed. > First, is the default updated from fletcher2 to SHA256 automatically for a > pool that was created with an older version of zfs and then upgraded to the > latest? Second, would all of the blocks be re-checksummed with a zfs > send/receive on the receiving side? As with all property changes, new writes get the new properties. Old data is not rewritten. Adam -- Adam Leventhal, Fishworks http://blogs.sun.com/ahl _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
