JorgeB

I believe it was used before but due to unreliable values it stopped being used, on newer kernels it should work reliably, and better than current method for some situations. There are frequent posts on the forum from users using two different size devices in a pool, because free space is incorrectly reported and they run out of it, e.g. a pool made of 32GB + 64GB devices default raid1 Usable space will be around 32GB, GUI reports 47GB, df reports correctly: Also starting with even newer kernels, like the one on v6.9-beta1 it started correctly reporting free space for raid5/6 profiles, pool made of four 64GB devices using raid6 With df: Please change this for v6.9, with multiple pools it will likely affect more users.

Posted this here since it's the version being developed but note that this bug is also present on v6.8.3. Like mentioned in the title the very nice pool direct convert options on the GUI are based on the number of pool slots instead of the actual number of devices, so if you have a 2 pool device (or even just 1 device) but have 4 pool slots selected you'll have the option to convert to raid5/6/10, you can then press balance but it will fail to convert to any invalid option.