On Wed, May 2, 2012 at 3:28 PM, Fred Liu <fred_...@issi.com> wrote: >> >>The size accounted for by the userused@ and groupused@ properties is the >>"referenced" space, which is used as the basis for many other space >>accounting values in ZFS (e.g. "du" / "ls -s" / stat(2), and the zfs >>accounting >>properties "referenced", "refquota", "refreservation", "refcompressratio", >>"written"). It includes changes local to the dataset (compression, the >>"copies" property, file-specific metadata such as indirect blocks), but >>ignores >>pool-wide or cross-dataset changes (space shared between a clone and its >>origin, mirroring, raid-z, dedup[*]).
> Can we also get the *ignored* space accounted? What problem are you trying to solve? How would you want referenced or userused@... to work? To be more clear: space shared between a clone and its origin is "referenced" by both the clone and the origin, so it is charged to both the clone's and origin's userused@... properties. The additional space used by mirroring and raid-z applies to all blocks in the pool[*], and is not charged anywhere (except by /sbin/zpool). --matt [*] Assuming you are using the recommended configuration of all the same type of top-level vdevs; if you are not then there's no control over which blocks go to which vdevs. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
