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Old 09-13-2010, 11:21 AM   #1
chuckj
LQ Newbie
 
Registered: Mar 2010
Posts: 8

Rep: Reputation: 0
timestamp (or something) problems with Samba share


I am using Samba on a Linux server (Ubuntu 10.04) to share directories among the various computers in my home.

I have been having trouble with text files I am editing where after I save a file that I'm working on, the editing application will keep telling me that the file has changed since I last saved. On Gedit, it is only annoying because it "informs" me only when I initiate a save, but on emacs, it keeps telling me that the file has changed, and asking me what I want to do about it. Although it may not be related to a timestamp problem, that's what I'll call it in the posting for the sake of brevity.

This timestamp problem became more urgent when I hosed up the server, which had been running Ubuntu Server 7.10, and was forced fix it. I installed the latest version (10.04) and now I can't work on it over a share (I'm ssh-ing to it to edit files directly). Version 7.10 didn't have this timestamp problem. I knew the problem existed because I saw it on other servers of more recent vintage I was working on for clients,

A thread in a SlickEdit (http://community.slickedit.com/index.php?topic=6134.0)forum suggested that installing the latest Samba version would fix the problem, so in desperation, I compiled and installed Samba 3.5.4. When I finally got that (Samba) working, I was disappointed to receive the familiar and unwelcome notification that a file I was working on "has been modified since reading it."

I can't believe I'm the only one having this problem, but I can't find any note about it with a solution or even a response. I'm beginning to suspect that there is an obvious setting that everyone else is using and I'm to dense to discover.

My workstation attaches to the share with the following entry in fstab:
//tiffany/WebWork /home/chuck/net/WebWork cifs default,user=smbuser,credentials=/home/chuck/.smbpasswd 0 0

and the smbd testparm output on my server is (note that I set "dos filetimes = Yes" and "dos filetime resolution = Yes"):
[global]
dos charset = CP850
unix charset = UTF-8
display charset = LOCALE
workgroup = MSHOME
realm =
netbios name = TIFFANY
netbios aliases =
netbios scope =
server string = %h server (Samba, Ubuntu)
interfaces =
bind interfaces only = No
security = USER
auth methods =
encrypt passwords = Yes
update encrypted = No
client schannel = Auto
server schannel = Auto
allow trusted domains = Yes
map to guest = Bad User
null passwords = No
obey pam restrictions = Yes
password server = *
smb passwd file = /etc/samba/smbpasswd
private dir = /etc/samba
passdb backend = tdbsam
algorithmic rid base = 1000
root directory =
guest account = nobody
enable privileges = Yes
pam password change = Yes
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
passwd chat debug = No
passwd chat timeout = 2
check password script =
username map =
password level = 0
username level = 0
unix password sync = Yes
restrict anonymous = 0
lanman auth = No
ntlm auth = Yes
client NTLMv2 auth = No
client lanman auth = No
client plaintext auth = No
preload modules =
dedicated keytab file =
kerberos method = default
map untrusted to domain = No
log level = 0
syslog = 0
syslog only = No
log file = /var/log/samba/log.%m
max log size = 1000
debug timestamp = Yes
debug prefix timestamp = No
debug hires timestamp = No
debug pid = No
debug uid = No
debug class = No
enable core files = Yes
smb ports = 445 139
large readwrite = Yes
max protocol = NT1
min protocol = CORE
min receivefile size = 0
read raw = Yes
write raw = Yes
disable netbios = No
reset on zero vc = No
acl compatibility = auto
defer sharing violations = Yes
nt pipe support = Yes
nt status support = Yes
announce version = 4.9
announce as = NT
max mux = 50
max xmit = 16644
name resolve order = lmhosts wins host bcast
max ttl = 259200
max wins ttl = 518400
min wins ttl = 21600
time server = No
unix extensions = Yes
use spnego = Yes
client signing = auto
server signing = No
client use spnego = Yes
client ldap sasl wrapping = plain
enable asu support = No
svcctl list =
deadtime = 0
getwd cache = Yes
keepalive = 300
lpq cache time = 30
max smbd processes = 0
paranoid server security = Yes
max disk size = 0
max open files = 16384
socket options = TCP_NODELAY
use mmap = Yes
hostname lookups = No
name cache timeout = 660
ctdbd socket =
cluster addresses =
clustering = No
load printers = Yes
printcap cache time = 750
printcap name =
cups server =
cups connection timeout = 30
iprint server =
disable spoolss = No
addport command =
enumports command =
addprinter command =
deleteprinter command =
show add printer wizard = Yes
os2 driver map =
mangling method = hash2
mangle prefix = 1
max stat cache size = 256
stat cache = Yes
machine password timeout = 604800
add user script =
rename user script =
delete user script =
add group script =
delete group script =
add user to group script =
delete user from group script =
set primary group script =
add machine script =
shutdown script =
abort shutdown script =
username map script =
logon script =
logon path = \\%N\%U\profile
logon drive =
logon home = \\%N\%U
domain logons = No
init logon delayed hosts =
init logon delay = 100
os level = 20
lm announce = Auto
lm interval = 60
preferred master = No
local master = Yes
domain master = Auto
browse list = Yes
enhanced browsing = Yes
dns proxy = No
wins proxy = No
wins server =
wins support = No
wins hook =
kernel oplocks = Yes
lock spin time = 200
oplock break wait time = 0
ldap admin dn =
ldap delete dn = No
ldap group suffix =
ldap idmap suffix =
ldap machine suffix =
ldap passwd sync = no
ldap replication sleep = 1000
ldap suffix =
ldap ssl = start tls
ldap ssl ads = No
ldap timeout = 15
ldap connection timeout = 2
ldap page size = 1024
ldap user suffix =
ldap debug level = 0
ldap debug threshold = 10
eventlog list =
add share command =
change share command =
delete share command =
preload =
lock directory = /var/run/samba
state directory = /var/lib/samba
cache directory = /var/cache/samba
pid directory = /var/run/samba
utmp directory =
wtmp directory =
utmp = No
default service =
message command =
get quota command =
set quota command =
remote announce =
remote browse sync =
socket address = 0.0.0.0
homedir map = auto.home
afs username map =
afs token lifetime = 604800
log nt token command =
time offset = 0
NIS homedir = No
registry shares = No
usershare allow guests = Yes
usershare max shares = 100
usershare owner only = Yes
usershare path = /var/lib/samba/usershares
usershare prefix allow list =
usershare prefix deny list =
usershare template share =
panic action = /usr/share/samba/panic-action %d
perfcount module =
host msdfs = Yes
passdb expand explicit = No
idmap backend = tdb
idmap alloc backend =
idmap cache time = 604800
idmap negative cache time = 120
idmap uid =
idmap gid =
template homedir = /home/%D/%U
template shell = /bin/false
winbind separator = \
winbind cache time = 300
winbind reconnect delay = 30
winbind enum users = No
winbind enum groups = No
winbind use default domain = No
winbind trusted domains only = No
winbind nested groups = Yes
winbind expand groups = 1
winbind nss info = template
winbind refresh tickets = No
winbind offline logon = No
winbind normalize names = No
winbind rpc only = No
comment =
path =
username =
invalid users =
valid users =
admin users =
read list =
write list =
printer admin =
force user =
force group =
read only = Yes
acl check permissions = Yes
acl group control = No
acl map full control = Yes
create mask = 0744
force create mode = 00
security mask = 0777
force security mode = 00
directory mask = 0755
force directory mode = 00
directory security mask = 0777
force directory security mode = 00
force unknown acl user = No
inherit permissions = No
inherit acls = No
inherit owner = No
guest only = No
administrative share = No
guest ok = No
only user = No
hosts allow =
hosts deny =
allocation roundup size = 1048576
aio read size = 0
aio write size = 0
aio write behind =
ea support = No
nt acl support = Yes
profile acls = No
map acl inherit = No
afs share = No
smb encrypt = auto
block size = 1024
change notify = Yes
directory name cache size = 100
kernel change notify = Yes
max connections = 0
min print space = 0
strict allocate = No
strict sync = No
sync always = No
use sendfile = No
write cache size = 0
max reported print jobs = 0
max print jobs = 1000
printable = No
printing = cups
cups options =
print command =
lpq command = %p
lprm command =
lppause command =
lpresume command =
queuepause command =
queueresume command =
printer name =
use client driver = No
default devmode = Yes
force printername = No
printjob username = %U
default case = lower
case sensitive = Auto
preserve case = Yes
short preserve case = Yes
mangling char = ~
hide dot files = Yes
hide special files = No
hide unreadable = No
hide unwriteable files = No
delete veto files = No
veto files =
hide files =
veto oplock files =
map archive = Yes
map hidden = No
map system = No
map readonly = yes
mangled names = Yes
store dos attributes = No
dmapi support = No
browseable = Yes
access based share enum = No
browsable = Yes
blocking locks = Yes
csc policy = manual
fake oplocks = No
locking = Yes
oplocks = Yes
level2 oplocks = Yes
oplock contention limit = 2
posix locking = Yes
strict locking = Auto
share modes = Yes
dfree cache time = 0
dfree command =
copy =
preexec =
preexec close = No
postexec =
root preexec =
root preexec close = No
root postexec =
available = Yes
volume =
fstype = NTFS
set directory = No
wide links = No
follow symlinks = Yes
dont descend =
magic script =
magic output =
delete readonly = Yes
dos filemode = No
dos filetimes = Yes
dos filetime resolution = Yes
fake directory create times = Yes
vfs objects =
msdfs root = No
msdfs proxy =

[printers]
comment = All Printers
path = /var/spool/samba
create mask = 0700
guest ok = Yes
printable = Yes
browseable = No
browsable = No

[print$]
comment = Printer Drivers
path = /var/lib/samba/printers

[Personal]
path = /share/Personal
read only = No
create mask = 0666
force create mode = 0666
directory mask = 0777
force directory mode = 0777
force directory security mode = 0777
guest ok = Yes

[Polar]
path = /share/Polar
read only = No
create mask = 0666
force create mode = 0666
directory mask = 0777
force directory mode = 0777
force directory security mode = 0777
guest ok = Yes

[WebWork]
path = /share/WebWork
read only = No
create mask = 0666
force create mode = 0666
directory mask = 0777
force directory mode = 0777
guest ok = Yes

[Transfers]
path = /share/Transfers
read only = No
create mask = 0666
force create mode = 0666
directory mask = 0777
force directory mode = 0777
force directory security mode = 0777
guest only = Yes
guest ok = Yes

[downloads]
path = /share/Downloads
read only = No
directory mask = 0777
guest ok = Yes


I've googled this for days with no luck.
 
Old 09-13-2010, 04:41 PM   #2
chuckj
LQ Newbie
 
Registered: Mar 2010
Posts: 8

Original Poster
Rep: Reputation: 0
As I kept trying to figure this out, I was surprised that, even with the dos filetime resolution = Yes, that doing a ls --full-time on the shared directory did not round the time down to a 2-second interval as advertised.

I decided to setup my server to share the folders both as NFS and CIFS/Samba, and am using NFS to use the shares on my Linux workstation, while continuing to use CIFS/Samba for Windows and Mac computers (though I still have to test for the Mac).

I'm still curious how others have solved the Samba timestamp problem because it would be easier to maintain a single set of shares.
 
  


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