On 07/11/2012 10:41 AM, Ferenc-Levente Juhos wrote: > I was under the impression that the hash (or checksum) used for data > integrity is the same as the one used for deduplication, > but now I see that they are different.
They are the same "in use", i.e. once you switch dedup on, that implies checksum=sha256. However, if you want to you, you can force ZFS to use fletcher even with dedup by setting dedup=verify and checksum=fletcher4 (setting "dedup=on" with fletcher4 is not advised due to fletcher's possibility of producing collisions and subsequent silent corruption). It's also possible to set "dedup=verify" with "checksum=sha256", however, that makes little sense (as the chances of getting a random hash collision are essentially nil). Cheers, -- Saso _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
