I also set the log level of samba to 10. This is the output:
[2018/04/08 11:18:42.569007, 3, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:3869(lp_load_ex)
lp_load_ex: refreshing parameters
[2018/04/08 11:18:42.569025, 5, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1344(free_param_opts)
Freeing parametrics:
[2018/04/08 11:18:42.569053, 3, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:547(init_globals)
Initialising global parameters
[2018/04/08 11:18:42.569100, 3, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:2782(lp_do_section)
Processing section "[global]"
doing parameter log level = 10
[2018/04/08 11:18:42.569121, 5, pid=29598, effective(0, 0), real(0, 0)] ../lib/util/debug.c:744(debug_dump_status)
INFO: Current debug levels:
all: 10
tdb: 10
printdrivers: 10
lanman: 10
smb: 10
rpc_parse: 10
rpc_srv: 10
rpc_cli: 10
passdb: 10
sam: 10
auth: 10
winbind: 10
vfs: 10
idmap: 10
quota: 10
acls: 10
locking: 10
msdfs: 10
dmapi: 10
registry: 10
scavenger: 10
dns: 10
ldb: 10
tevent: 10
auth_audit: 10
auth_json_audit: 10
kerberos: 10
drs_repl: 10
doing parameter interfaces = enp1s0f0 enp1s0f1
doing parameter server min protocol = SMB2
doing parameter workgroup = STROMI
doing parameter passdb backend = tdbsam
doing parameter load printers = No
doing parameter printcap name = /dev/null
doing parameter disable spoolss = Yes
doing parameter logon path = \\%L\profiles\.msprofile
doing parameter logon home = \\%L\%U\.9xprofile
doing parameter logon drive = P:
doing parameter usershare allow guests = No
doing parameter add machine script = /usr/sbin/useradd -c Machine -d /var/lib/nobody -s /bin/false %m$
doing parameter domain logons = No
doing parameter domain master = No
doing parameter netbios name = GRANDPA
doing parameter wins support = No
doing parameter security = user
[2018/04/08 11:18:42.569338, 2, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:2799(lp_do_section)
Processing section "[homes]"
[2018/04/08 11:18:42.569357, 8, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1460(add_a_service)
add_a_service: Creating snum = 0 for homes
[2018/04/08 11:18:42.569370, 10, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1501(hash_a_service)
hash_a_service: creating servicehash
[2018/04/08 11:18:42.569381, 10, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1510(hash_a_service)
hash_a_service: hashing index 0 for service name homes
doing parameter comment = Home Directories
doing parameter valid users = %S, %D%w%S
doing parameter browseable = No
doing parameter read only = No
doing parameter inherit acls = Yes
[2018/04/08 11:18:42.569431, 2, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:2799(lp_do_section)
Processing section "[media]"
[2018/04/08 11:18:42.569448, 8, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1460(add_a_service)
add_a_service: Creating snum = 1 for media
[2018/04/08 11:18:42.569460, 10, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1510(hash_a_service)
hash_a_service: hashing index 1 for service name media
doing parameter comment = Music, Videos, Pictures
doing parameter inherit acls = Yes
doing parameter path = /var/media
doing parameter read only = No
[2018/04/08 11:18:42.569503, 4, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:3911(lp_load_ex)
pm_process() returned Yes
[2018/04/08 11:18:42.569523, 8, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1460(add_a_service)
add_a_service: Creating snum = 2 for IPC$
[2018/04/08 11:18:42.569536, 10, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1510(hash_a_service)
hash_a_service: hashing index 2 for service name IPC$
[2018/04/08 11:18:42.569549, 3, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:1617(lp_add_ipc)
adding IPC service
[2018/04/08 11:18:42.569572, 6, pid=29598, effective(0, 0), real(0, 0)] ../source3/param/loadparm.c:2332(lp_file_list_changed)
lp_file_list_changed()
file /etc/samba/smb.conf -> /etc/samba/smb.conf last mod_time: Sun Apr 8 10:59:17 2018
[2018/04/08 11:18:42.570031, 2, pid=29598, effective(0, 0), real(0, 0)] ../source3/lib/interface.c:345(add_interface)
added interface enp1s0f0 ip=192.168.2.1 bcast=192.168.2.255 netmask=255.255.255.0
[2018/04/08 11:18:42.570054, 2, pid=29598, effective(0, 0), real(0, 0)] ../source3/lib/interface.c:345(add_interface)
added interface enp1s0f1 ip=192.168.4.1 bcast=192.168.4.255 netmask=255.255.255.0
[2018/04/08 11:18:42.570076, 3, pid=29598, effective(0, 0), real(0, 0)] ../source3/smbd/server.c:1808(main)
loaded services
[2018/04/08 11:18:42.570093, 5, pid=29598, effective(0, 0), real(0, 0)] ../source3/lib/util_names.c:152(init_names)
Netbios name list:-
my_netbios_names[0]="GRANDPA"
[2018/04/08 11:18:42.570136, 1, pid=29598, effective(0, 0), real(0, 0)] ../source3/profile/profile_dummy.c:30(set_profile_level)
INFO: Profiling support unavailable in this build.
[2018/04/08 11:18:42.570160, 3, pid=29598, effective(0, 0), real(0, 0)] ../source3/smbd/server.c:1840(main)
Becoming a daemon.
[2018/04/08 11:18:42.570206, 0, pid=29598, effective(0, 0), real(0, 0)] ../lib/util/become_daemon.c:124(exit_daemon)
exit_daemon: STATUS=daemon failed to start: Failed to create session, error code 1
I can’t see anything helpful though …