Everything beyond v28 is now at 5000. At 5000, feature flags were enabled so that you wouldn't have to worry about features in the different versions. Those features are held in the pool, so if you import into another distro, ZFS will know what features are there, rather than version numbers. Features have to be written to not disable pool operations if that features isn't enabled on the importing distro. Once you go up in versions, you can go backwards. The oracle version, last time I looked, was at about 32. So once you import into oracle zfs you can never go back again. But you can import a free and open pool into oracle zfs. linda On 4/19/15 8:28 PM, T L wrote: > > I get those messages on v28 pools, made with ZFS for Linux or FreeBSD > or older versions of FreeNAS. > > I'm hesitant to move beyond v28, even though I'd like some of the > newer features, because I am not clear on the compatibility matrix > among non-Oracle ZFS implementations. Version 28 seems to be the last > version that all extant ZFS implementations can read. I'd be very > willing to give up Oracle compatibility but don't want to lock myself > out of moving between ZFS on Linux and *BSD. If anyone else has > thoughts or experience to share here, that'd be mist welcome! > > Thomas > > On Apr 19, 2015 6:37 PM, "Clug" <tclug at freakzilla.com > <mailto:tclug at freakzilla.com>> wrote: > > Oh, in case anyone was curious, this is what zpool upgrade > returned, so these features for some reason weren't enabled before. > > clug at rooster:/home/clug> sudo zpool upgrade > This system supports ZFS pool feature flags. > > All pools are formatted using feature flags. > > > Some supported features are not enabled on the following > pools. Once a > feature is enabled the pool may become incompatible with software > that does not support the feature. See zpool-features(5) for > details. > > POOL FEATURE > --------------- > media > spacemap_histogram > enabled_txg > hole_birth > extensible_dataset > embedded_data > bookmarks > > -- > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org <mailto:tclug-list at mn-linux.org> > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20150420/be0e048a/attachment.html>