[linux-lvm] howto cache a thinpool-device?

[Oliver Rath]

Hi list,

Im playing around with the new cache options. Ive created a lvm-device
on my cache-disk named lvx-cache (vg is dmivg). Additionally Ive created
a thinpool-device named winthinpool.

Now i wanted to use my cache-device to cache my thinpool-lvm, but this
doesnt work:

~# lvconvert --type cache --cachepool dmivg/lvx_cache dmivg/winthinpool
  Can't cache thin-pool volume dmivg/winthinpool.

isnt is possible to cache a thinpool-device?

Tfh!
Oliver