Hello,I have an aufs on top of a read-only NFSROOT here and found that the man command fails with exit-status 1. This does not happen when I use the same NFSROOT without aufs, and it even does not happen with aufs if I perform a chroot to the directory where the original NFSROOT is still mounted read-only. So, I am quite sure that the problem is aufs-related.
I am using Kernel 4.19.67 and aufs-tools 4.14+20190211-1. Regards Christoph