So far I only have experiences with ZFS on Solaris SPARC hosts. Not
sure how good the Linux support for it is. Should be okay. Be cautioned
the man page has scroll regions that last until you're asleep. Huge man
page.
Starting point should be "zpool import" assuming a "zpool export" was
done before shutting down the Solaris source host. If no "zpool export"
was done start looking for that old box so you can do it. The "zpool
import" might work on an un-exported pool but the chances of error is
higher doing a dirty import.
The old OpenSolaris was x86, right? Solaris docs claim they handled the
endian issue so pools can move between architectures. I've never tried.