Hi 
I lose connection to nas when downloading large files. Files of around 1GB are fine. but if I download 3GB ++ via uTorrent it works for about 10sec before it loses connection. My disk connected to Rasberry Pi 3 is MyBook, hfsplus formatted.I use afp but have also tried smb and cifs. I have created folders with write/read access for everyone, guests and my user, but it didn't help. Can someone please help? 
These are the error messages in syslog:
May 22 22:10:44 NAS kernel: [2584486.361160] hfsplus: inconsistency in B*Tree (3,1,255,34,35)
May 22 22:10:44 NAS kernel: [2584486.361170] hfsplus: xattr searching failed
May 22 22:10:44 NAS kernel: [2584486.361259] hfsplus: inconsistency in B*Tree (3,1,255,34,35)
May 22 22:10:44 NAS kernel: [2584486.361273] hfsplus: inconsistency in B*Tree (3,1,255,34,35)
May 22 22:10:44 NAS kernel: [2584486.361608] hfsplus: inconsistency in B*Tree (2,1,255,32,33)
May 22 22:10:44 NAS kernel: [2584486.361613] hfsplus: xattr searching failed
May 22 22:10:44 NAS kernel: [2584486.361673] hfsplus: inconsistency in B*Tree (2,1,255,32,33)
May 22 22:10:44 NAS kernel: [2584486.361688] hfsplus: inconsistency in B*Tree (2,1,255,32,33)
May 22 22:10:44 NAS afpd[24144]: volume "Bilder" does not support Extended Attributes or read-only volume
May 22 22:10:44 NAS systemd[24148]: Startup finished in 75ms.
May 22 22:10:44 NAS afpd[24144]: volume "Torrent" does not support Extended Attributes or read-only volume
May 22 22:10:44 NAS systemd[1]: Started User Manager for UID 1000.