samba - Dec 1998 - Why does oplocks = False not seem to stop file cacheing?

Greetings All,
 I have tried everything I can think of and can not seem to 
stop the PC from cacheing a local copy of a file retrieved
over a samba share. I have tried oplocks = false and also
setting veto oplocks = /*.txt/

Whatever I try the PC still shows me the old version of a file
after I modify it on the unix side. If anyone can see anything
wrong with my smb.conf file please let me know. Thanks in 
advance,

David.

; Configuration file for smbd.
;
===========================================================================[global]
  printing = sysv
  printcap name = /etc/printcap
  load printers = yes
  keepalive = 60
  guest account = nobody
  socket options = TCP_NODELAY 
  username map = /opt/samba/lib/umap
  read prediction = False
  oplocks = no
  debug level = 11
  lock directory = /opt/samba/lib/locks
  kernel oplocks = no
  ole locking compatibility = no
  share modes = yes
  locking = yes
  strict locking = yes

[pc]
   path = /NEWPC
   public = yes
   only guest = yes
   writable = yes
   printable = no
;  I have tried share modes both yes and no, that doesnt seem to
;  change anything.
   share modes = no
;  I think setting oplocks False should do the trick but it doesn't
;  seem to help.
   oplocks = False
;  So I tried to set veto to veto all files, but again this didn't
;  seem to help any.
   veto oplock files = /*.txt/

On Wed, 16 Dec 1998, David J. Reiter wrote:
> 
> [pc]
>    path = /NEWPC
>    public = yes
>    only guest = yes
>    writable = yes
>    printable = no
> ;  I have tried share modes both yes and no, that doesnt seem to
> ;  change anything.
>    share modes = no
> ;  I think setting oplocks False should do the trick but it doesn't
> ;  seem to help.
>    oplocks = False
> ;  So I tried to set veto to veto all files, but again this didn't
> ;  seem to help any.
>    veto oplock files = /*.txt/
> 
> 


from mine (don't remember what sync does so it might not be needed)
  [office]
   sync always = yes
   oplocks = no

->->->->->->->->->->->->->->->->->->---<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<
James Thompson    138 Cardwell Hall  Manhattan, Ks   66506    785-532-0561 
Kansas State University                          Department of Mathematics
->->->->->->->->->->->->->->->->->->---<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-<

Hi James,
 I took the smb.conf file you sent me and made the following
two changes from your file:
   username map = /usr/local/samba/lib/umap
   guest account = guest

I then restarted the server. Unfortunately I still get the same
behavior. It must be something small I am missing but I can't figure
it out. I was running samba 2.0 beta 4 but then switched back to 
version 1.9.18p10. On the PC side I am running Windows 95
(4.00.950) and Novell NetWare Client 32 (Maybe Novell has something
to do with it). Well If you can think of anything else I might
try please let me know. Thanks for your help so far.

David.
(I am including the output of testparms at the end of this,
maybe it will give somebody a clue)

On Tue, 15 Dec 1998, James Thompson wrote:
> On Tue, 15 Dec 1998, David J. Reiter wrote:
> >
> >  Thanks for the advice. I tried it out but I still got the same
> > behavior. If you can think of any other parameter please let
> > me know. Thanks,
> > 
> 
> Thats the exact same problem I had and someone sugested the two options I
> sent you which fixed my problem. Here's a complete section of my
smb.conf
> I'm running Samba version 1.9.18p10.  I hate to ask but you did restart
> the daemons after changing oplocks from False to no ? 
> 
> [global]
>  ;Tuning Parameters
>    dead time = 3
>    socket options = TCP_NODELAY
>  ;Domain Logon Setup
>    os level = 2
>    domain master = yes
>    preferred master = yes
>    domain logons = yes
>    logon script = network.bat
>    security = user
>    password level = 8
>    wins support = yes
>  ;File system info
>    preserve case = yes
>  ;Printing
>    printing = sysv
>    printcap name = /usr/local/samba/printcap
> ;   load printers = yes
>  ;Misc
>    guest account = ftp 
>    server string = KSU Mathematics Samba Server
> 
> ;  This next option sets a separate log file for each client. Remove
> ;  it if you want a combined log file.
>    log file = /usr/local/samba/log.%m
> 
> ;  You will need a world readable lock directory and "share
modes=yes"
> ;  if you want to support the file sharing modes for multiple users
> ;  of the same files
> ;  lock directory = /usr/local/samba/var/locks
> ;  share modes = yes
> 
> [homes]
>   allow hosts = 129.130.6.
>   comment = Home Directories
>   browseable = no
>   read only = no
>   create mode = 0750
>   preserve case = yes
>   sync always = yes
>   oplocks = no
> 
Here is the output from testparms

Load smb config files from /usr/local/samba/lib/smb.conf
Processing section "[homes]"
Loaded services file OK.
Press enter to see a dump of your service definitions
# Global parameters
	debuglevel = 2
	syslog = 1
	syslog only = No
	protocol = NT1
	security = USER
	max disk size = 0
	lpq cache time = 10
	announce as = NT
	encrypt passwords = No
	update encrypted = No
	getwd cache = Yes
	read prediction = No
	read bmpx = Yes
	read raw = Yes
	write raw = Yes
	use rhosts = No
	load printers = Yes
	null passwords = No
	strip dot = No
	interfaces = 
	bind interfaces only = No
	networkstation user login = No
	password server = 
	socket options = TCP_NODELAY
	netbios name = 
	netbios aliases = 
	smbrun = /usr/local/samba/bin/smbrun
	log file = /usr/local/samba/log.%m
	config file = 
	smb passwd file = /usr/local/samba/private/smbpasswd
	hosts equiv = 
	preload = 
	server string = KSU Mathematics Samba Server
	printcap name = lpstat
	lock dir = /usr/local/samba/var/locks
	root directory = /
	default service = 
	message command = 
	dfree command = 
	passwd program = /usr/local/samba/bin/smbpasswd
	passwd chat = *old*password* %o\n *new*password* %n\n *new*password* %n\n
*changed*
	passwd chat debug = No
	valid chars = 
	workgroup = WORKGROUP
	username map = /usr/local/samba/lib/umap
	character set = 
	logon script = 
	logon path = \\%N\%U\profile
	logon drive = 
	logon home = \\%N\%U
	remote announce = 
	remote browse sync = 
	socket address = 0.0.0.0
	homedir map = 
	announce version = 4.2
	max log size = 5000
	mangled stack = 50
	max mux = 50
	max xmit = 65535
	max packet = 65535
	name resolve order = lmhosts host wins bcast
	packet size = 65535
	password level = 8
	username level = 0
	keepalive = 0
	deadtime = 3
	time offset = 0
	read size = 16384
	shared mem size = 102400
	coding system = 
	client code page = 850
	os level = 2
	max ttl = 14400
	max wins ttl = 259200
	min wins ttl = 21600
	lm announce = Auto
	lm interval = 60
	dns proxy = Yes
	wins support = Yes
	wins proxy = No
	wins server = 
	preferred master = Yes
	local master = Yes
	domain master = Yes
	domain logons = Yes
	browse list = Yes
	unix realname = No
	NIS homedir = No
	unix password sync = No
	time server = No
	ole locking compatibility = Yes
	printer driver file = /usr/local/samba/lib/printers.def


# Default service parameters
	comment = 
	copy = 
	include = 
	exec = 
	postexec = 
	root preexec = 
	root postexec = 
	alternate permissions = No
	revalidate = No
	default case = lower
	case sensitive = No
	preserve case = Yes
	short preserve case = No
	mangle case = No
	mangling char = ~
	browseable = Yes
	available = Yes
	path = 
	username = 
	guest account = guest
	invalid users = 
	valid users = 
	admin users = 
	read list = 
	write list = 
	volume = 
	force user = 
	force group = 
	read only = Yes
	max connections = 0
	min print space = 0
	create mask = 0744
	force create mode = 00
	directory mask = 0755
	force directory mode = 00
	set directory = No
	status = Yes
	hide dot files = Yes
	delete veto files = No
	veto files = 
	hide files = 
	veto oplock files = 
	guest only = No
	guest ok = No
	print ok = No
	postscript = No
	map system = No
	map hidden = No
	map archive = Yes
	locking = Yes
	strict locking = No
	share modes = Yes
	oplocks = Yes
	only user = No
	wide links = Yes
	follow symlinks = Yes
	sync always = No
	strict sync = No
	mangled names = Yes
	fake oplocks = No
	printing = sysv
	print command = lp -c -d%p %s; rm %s
	lpq command = lpstat -o%p
	lprm command = cancel %p-%j
	lppause command = 
	lpresume command = 
	queuepause command = disable %p
	queueresume command = enable %p
	printer = 
	printer driver = NULL
	printer driver location = 
	hosts allow = 
	hosts deny = 
	dont descend = 
	magic script = 
	magic output = 
	mangled map = 
	delete readonly = No
	dos filetimes = No
	dos filetime resolution = No
	fake directory create times = No

[homes]
	comment = Home Dir
	browseable = No
	read only = No
	create mask = 0750
	oplocks = No
	sync always = Yes
	hosts allow = 137.51.150.

[IPC$]
	comment = IPC Service (KSU Mathematics Samba Server)
	path = /tmp
	status = No
	guest ok = Yes

>
> Whatever I try the PC still shows me the old version of a file
> after I modify it on the unix side. If anyone can see anything
> wrong with my smb.conf file please let me know. Thanks in
> advance,
>

Do you mean, you open file on PC (e.g. with notepad), then _close_ it on PC,
modify on Unix, open _again_ on PC and still see the old content? I just did
it on samba-2.1prealpha from WinNT and it works O.K. Oplocks have nothing to
do with it, as they are hold only as long as file is open. If it does not
work for you - what OS/version etc do you have?

If you mean, you have file _opened_ on PC, modify on Unix, and wonder, why
it is not changed on PC - this is normal. Why should it change on PC? PC has
no way to know, that file was modified on Unix and never tries to update it.
As far as PC is concerned, file was fully read.

The point in setting oplocks off is to let _Unix_ see changes made on PC -
not other way round.

/andrej

On Wed, 16 Dec 1998, Andrej Borsenkow wrote:
> >
> > Whatever I try the PC still shows me the old version of a file
> > after I modify it on the unix side. If anyone can see anything
> > wrong with my smb.conf file please let me know. Thanks in
> > advance,
> >
> 
> 
> Do you mean, you open file on PC (e.g. with notepad), then _close_ it on
PC,
> modify on Unix, open _again_ on PC and still see the old content? I just
did
> it on samba-2.1prealpha from WinNT and it works O.K. Oplocks have nothing
to
> do with it, as they are hold only as long as file is open. If it does not
> work for you - what OS/version etc do you have?
  Yes this is what I mean. We are running samba on a sparc 10/Solaris
  2.5.1 machine. The PC is running Win 95, and also has novelle netware.
  I have seen the sambe behavior running samba 2.0 beta 4 and 1.9.18p10.

  If you have any ideas what might be causing the problem please let me 
  know, Thanks,

David.
> 
> If you mean, you have file _opened_ on PC, modify on Unix, and wonder, why
> it is not changed on PC - this is normal. Why should it change on PC? PC
has
> no way to know, that file was modified on Unix and never tries to update
it.
> As far as PC is concerned, file was fully read.
> 
> The point in setting oplocks off is to let _Unix_ see changes made on PC -
> not other way round.
> 
> /andrej
> 
> 
> 
>