On Tue, Oct 26, 2021 at 10:17 AM Carl Karsten <carl@xxxxxxxxxxxxxxxx> wrote: > > I am trying to replicate the setup described below, > (from: https://www.spinics.net/lists/linux-unionfs/msg07098.html ) > which implies a successful mount, but all of my attempts error with: > > mount: /e/merged: wrong fs type, bad option, bad superblock on > overlay, missing codepage or helper program, or other error. > [ 3640.328337] overlayfs: upper fs does not support tmpfile. > [ 3640.333245] overlayfs: upper fs does not support RENAME_WHITEOUT. > [ 3640.333266] overlayfs: upper fs does not support xattr, falling > back to index=off and metacopy=off. > [ 3640.333281] overlayfs: upper fs missing required features. > These kernel logs are the only relevant information. Do you get the same kernel logs for all the overlayfs mount attempts? As overlayfs is trying to say, the problem is clearly with upper fs and there is no information about what upper fs is. The setup that you are trying to replicate was using tmpfs as upper, which should work fine. Thanks, Amir.
