--- wikisrc/zfs.mdwn	2020/03/01 23:54:13	1.11
+++ wikisrc/zfs.mdwn	2020/03/02 00:09:25	1.12
@@ -18,7 +18,28 @@ See the man pages for zfs(8) and zpool(8
 
 # Status of ZFS in NetBSD
 
-NetBSD has imported OpenZFS.  \todo versions, links
+## Sources
+
+\todo Verify/fix.
+
+Currently, there are multiple ZFS projects/codebases:
+
+  - ZFS as released under the CDDL (common ancestor)
+  - [OpenZFS](http://www.open-zfs.org/wiki/Main_Page)
+  - [zfsonlinux](https://zfsonlinux.org/)
+  - proprietary ZFS in Solaris (not relevant in open source)
+
+OpenZFS is a coordinating project to align open ZFS codebases.  There
+is a notion of a shared core codebase and OS-specific adaptation code.
+
+## NetBSD code history
+
+\todo This section really needs help.
+
+Before NetBSD 8, NetBSD imported ZFS code from ?
+
+Before NetBSD 9, NetBSD imported updated ZFS code from FreeBSD.  That
+FreeBSD code came from ?
 
 ## NetBSD 8 and earlier
 
@@ -33,9 +54,10 @@ can actually be recommended for use.)
 ## NetBSD 9
 
 There have been fixes since 9.0 RELEASE.  It is best to upgrade along
-the netbsd-9 branch, but the release should be ok.
+the netbsd-9 branch, but the release should be ok.  Most aspects work solidly.
 
-\todo This is OpenZFS as of X.   Most aspects work solidly.
+\todo Explain this in terms of versions of FreeBSD OpenZFS and/or
+zfsonlinux.
 
 \todo This supports pool version 28/5000 (really true?).  Of the
 feature flags found in modern OpenZFS, \todo are supported.