Comment # 5 on bug 1148809 from Michael Chang

(In reply to Josef Reidinger from comment #4)
> Michael - before we start with debugging deeper, do you have idea for that
> output of grub2-editenv? is lvmcache supported at all by grub2?

The lvm cachepool is not known by grub, thus should be ignored.

> grub2-editenv: info: unknown LVM type cache-pool+METADATA_FORMAT.
> grub2-editenv: info: unknown LVM type cache-pool+METADATA_FORMAT.

My gut feeling is telling me it should be enough to ignore cachepool lv going
forward, but something looks wrong in grub as it seems not that easy.