Hello! I am unable to make permissions works properly SMB share from macOS (macOS 10.13 client connects to Ubuntu 20 SAMBA server). My smb.conf: [global] fruit:aapl = yes vfs objects = catia fruit streams_xattr # (below option is ?yes? by default, and I need this option, I will not set it to ?no") fruit:nfs_aces = yes The issue: From macOS in Terminal: $ cd /Volumes/share1 $ touch 123 $ touch -m 123 $ chmod 444 123 $ touch -m 123 touch: 123: Permission denied So, after changing file to read-only I cannot change its attributes (i.e. time). Synchronisation software built specially for macOS do not work, I cannot backup/sync my files on such shares. I tried to contact engineers of one of commercial sync. product I plan to use, they are not familiar with SAMBA and cannot help. They may add some workarounds but it will take huge amount of time, so I hope it could be fixed by config setting. On APFS (local FS of macOS) above commands works without error (can change attributes of a r/o file). I tried to add acl_xattr module, but it breaks permissions. Also, I don?t use ACL anyway. How to avoid this ?permission denied? error, is it possible? Mikhail