I have problems setting up a docker samba server (dperspon/samba) on my server (Pi4). The writable samba share appears to be read only. However the behavior is weird. When I put a file into the share using MacOS Finder a file is created, but it stays empty. The operation fails with the following note The operation could not be completed because an unknown error occurred (error -50). Using CLI everything is fine. The storage (/media/data) is ExFat formated. What is wrong with the following compose file?
samba:
image: dperson/samba
container_name: samba
command: -g "log level = 2" -u "root;PASSWORD" -s "all;/smb/all;yes;no;no;root"
volumes:
- /media/data:/smb/all
environment:
- TZ=Europe/Berlin
- WORKGROUP=media
#- USERID=0
#- GROUPID=0
ports:
- 139:139
- 445:445
restart: unless-stopped
This is the resulting conf in the container.
pam password change = yes
map to guest = bad user
usershare allow guests = yes
create mask = 0664
force create mode = 0664
directory mask = 0775
force directory mode = 0775
force user = smbuser
force group = smb
follow symlinks = yes
load printers = no
printing = bsd
printcap name = /dev/null
disable spoolss = yes
strict locking = no
aio read size = 0
aio write size = 0
vfs objects = catia fruit recycle streams_xattr
recycle:keeptree = yes
recycle:maxsize = 0
recycle:repository = .deleted
recycle:versions = yes
# Security
client ipc max protocol = SMB3
client ipc min protocol = SMB2_10
client max protocol = SMB3
client min protocol = SMB2_10
server max protocol = SMB3
server min protocol = SMB2_10
# Time Machine
fruit:delete_empty_adfiles = yes
fruit:time machine = yes
fruit:veto_appledouble = no
fruit:wipe_intentionally_left_blank_rfork = yes
[all]
path = /smb/all
browsable = yes
read only = no
guest ok = no
veto files = /.apdisk/.DS_Store/.TemporaryItems/.Trashes/ Trash Fold
delete veto files = yes
valid users = root
2 Answers
The problem is the config line:
vfs objects = catia fruit recycle streams_xattr
Note the requirements of the VFS module streams_xattr:
The file system that is shared with this module enabled must support xattrs.
After removing streams_xattr at least writing once worked. However deleting and writing again made problems. Removing fruit alltogether, although using samba only from a mac client, made file operations work as expected.
I am also using dperson/samba with a exFAT mount, and was having similar issues with a Windows 10 client giving this error whenever I tried to rename/move/delete (but creating files worked)
Error 0x80070032: The request is not supported.
as you said, the fix was to remove fruit and streams_xattr from vfs objects line in /etc/samba/smb.conf
vfs objects = catia recycle
$ docker exec -it samba bash
$ vi /etc/samba/smb.conf
# in vi, delete fruit and streams_xattr from vfs objects =
$ exit
$ docker restart samba
