Comment 15 for bug 1808421

Upstream root cause and fix:

* util-linux issue 918 - "blkid reports disk as zfs_member if it has a zfs_member partition"
  https://github.com/util-linux/util-linux/issues/918

* Fixed by commit "libblkid: (zfs) don't probe whole-disk areas covered by partitions"
  https://github.com/util-linux/util-linux/commit/f6e182078a3f05af3ce3b5e5a2d1956d4b9677e2

* First included in util-linux v2.35 released Jan 21 2020
  https://github.com/util-linux/util-linux/blob/master/Documentation/releases/v2.35-ReleaseNotes#L231
  https://github.com/util-linux/util-linux/releases/tag/v2.35