Specify a different policy for a single path

[felixschndr]

I'd like to get started with mergerfs and would like to pool 3 disks together:

Current folder structure

disk1
    FolderA
    FolderB
    FolderC
disk2
    FolderB 
    FolderC
disk3
    FolderB 
    Folder3

I achieved a merging of them together into

pool
    FolderA
    FolderB
    FolderC

with the policy lfs.

However I'd like that the contents of FolderA always stay on disk1 no matter which disk has the least available free storage. This is due to FolderA being a intermediate directory which has a lot of writes/reads which I'd like to let my HDD handle and not use this precious write cycles of my SSDs disk2 and disk3.
Is it possible to achieve this? I was not able to find anything in regarding this in the documentation.
I guess I need a specific policy (probably any path preserving one) for this one path, right?

[trapexit]

If it isn't laid out in the docs it isn't a feature. There are no per folder policies. So you can't say "do policy X except for /foo/bar". The best you could do is some "ep" policy. But then you have to manually manage the directory layout on the other branches. And would mean you'll get errors about space if you run out on the particular filesystem.