Hello everyone,
Just letting you know, if there is anyone here that has been stuck using FreeNAS because they mistakenly upgraded their zpool to use spacemap_histogram and can now no longer migrate their pool to another OS, i.e. FreeBSD, have no fear! You can install FreeBSD 11.0 Head/Current and it solves the below issue.
root@Galaxy:/home/ub3r # zpool import Galaxy
This pool uses the following feature(s) not supported by this system:
com.delphix:spacemap_histogram (Spacemaps maintain space histograms.)
All unsupported features are only required for writing to the pool.
The pool can be imported using '-o readonly=on'.
cannot import 'Galaxy': unsupported version or feature
Just letting you know, if there is anyone here that has been stuck using FreeNAS because they mistakenly upgraded their zpool to use spacemap_histogram and can now no longer migrate their pool to another OS, i.e. FreeBSD, have no fear! You can install FreeBSD 11.0 Head/Current and it solves the below issue.
root@Galaxy:/home/ub3r # zpool import Galaxy
This pool uses the following feature(s) not supported by this system:
com.delphix:spacemap_histogram (Spacemaps maintain space histograms.)
All unsupported features are only required for writing to the pool.
The pool can be imported using '-o readonly=on'.
cannot import 'Galaxy': unsupported version or feature