(restored the dropped Cc: aufs-users ML) Thegala: > Just one question where to find CONFIG_AUFS_xxx?
You should have /sys/fs/aufs/config. Thanks for the necessary info, but unfortunetely there is some lack. - /sys/fs/aufs/si_*/* are necessary too. - Your /proc/mounts doesn't tell what filesystem your /media/Unionfs/sd[bcd] is. Are they local ext4 or something? > dmesg | grep aufs: ::: > [ 46.659566] aufs br_attr_val:280:mount[700]: ignored branch attribute ic= > ex It looks weird to me. This msg appears when CONFIG_AUFS_XATTR is not defined AND some of the branch attribute called ICEX is given at mounting. But your fstab entry doesn't have such attribute. Who gave ICEX attribute? > Linux configuration: > https://gist.github.com/0dfc5e7da5b1bd8cb9a524ff463370ef This config is for 4.19.67, but your kernel is 4.19.98. Is this OK? (If ok, then I don't care) Anyway using ACL requires CONFIG_AUFS_XATTR (because ACL is a kind of XATTR. Linux implements it so). I'd suggest you to confirm whether this configuration is enabled or not as a first step. J. R. Okajima