[Samba] MYOB and Samba- the proverbial...

[Marian Mlcoch, Ing]

Hi your mistake is that oplock is share parameter not global...
And best is use veto oplock files share parameter try read manual...

oplocks (S)
This boolean option tells smbd whether to issue oplocks (opportunistic
locks) to file open requests on this share. The oplock code can dramatically
(approx. 30% or more) improve the speed of access to files on Samba servers.
It allows the clients to aggressively cache files locally and you may want
to disable this option for unreliable network environments (it is turned on
by default in Windows NT Servers). For more information see the file
Speed.txt in the Samba docs/ directory.

Oplocks may be selectively turned off on certain files with a share. See the
veto oplock files parameter. On some systems oplocks are recognized by the
underlying operating system. This allows data synchronization between all
access to oplocked files, whether it be via Samba or NFS or a local UNIX
process. See the kernel oplocks parameter for details.

See also the kernel oplocks and level2 oplocks parameters.

Default: oplocks = yes

First
remove oplocks and kernel oplocks from your global conf and second try
determine what file generates problem and on share with this use

veto oplock files (S)
This parameter is only valid when the oplocks parameter is turned on for a
share. It allows the Samba administrator to selectively turn off the
granting of oplocks on selected files that match a wildcarded list, similar
to the wildcarded list used in the veto files parameter.

Default: No files are vetoed for oplock grants

You might want to do this on files that you know will be heavily contended
for by clients. A good example of this is in the NetBench SMB benchmark
program, which causes heavy client contention for files ending in .SEM. To
cause Samba not to grant oplocks on these files you would use the line
(either in the [global] section or in the section for the particular
NetBench share :

Example: veto oplock files = /*.SEM/

Or full oplocks = no on share no global.

Bye.


----- Original Message ----- 
From: "Adrian Bolzan" <Adrian.Bolzan at aot.com.au>
To: <samba at lists.samba.org>
Sent: Thursday, July 24, 2003 8:47 AM
Subject: [Samba] MYOB and Samba- the proverbial...


> Hi,
>
> We use redHat 9.0, Samba 2.2.8 and WinXP Pro clients.
>
> MYOB premier 7 is installed on the Workstation, and is a multi-user
> version.
>
> Every time someone accesses a MYOB data file shared on the
> Samba server all users lose their connections to Samba and a reboot
> of the server is required (not just a restart of samba!).
>
> Trawlng google and lists it seems that this is a common problem but
> usually fixed by setting "oplocks = no".  This has not worked for us...
>
> any thoughts would be appreciated.
>
> adrian
>
>
> smb.conf:
>
> #======================= Global Settings
> #=====================================
> [global]
>    workgroup = tucksgrp
>    netbios name = tuckssvr
>    server string = Samba Server
>    printcap name = /etc/printcap
>    load printers = yes
>    printing = cups
>    guest account = smbguest
>    log file = /var/log/samba/%m.log
>    log level = 2
>    max log size = 0
>    security = user
>    encrypt passwords = yes
>    smb passwd file = /etc/samba/smbpasswd
>    unix password sync = Yes
>    passwd program = /usr/bin/passwd %u
>
>    passwd chat = *New*password* %n\n *Retype*new*password*
> %n\n
>    *passwd:*all*authentication*tokens*updated*successfully*
>
>    pam password change = yes
>    obey pam restrictions = yes
>
>    socket options = TCP_NODELAY IPTOS_LOWDELAY
> SO_KEEPALIVE SO_RCVBUF=16384 SO_SNDBUF=16384
>
>    local master = yes
>    os level = 64
>    domain master = yes
>    preferred master = yes
>    domain logons = yes
>    domain admin group = root @admins
>    logon script = logon.bat
>    logon path = \\tuckssvr\profiles\%U
>    logon home = \\tuckssvr\%U
>    logon drive = Z:
>    wins support = yes
>    dns proxy = no
>    oplocks = no
>    kernel oplocks = no
>
>
> #============================ Share Definitions
> #==============================
> [homes]
>    comment = Home Directories
>    browseable = no
>    writable = yes
>    valid users = %S
>    create mode = 0664
>    directory mode = 0775
>
>  [netlogon]
>    comment = Network Logon Service
>    path = /home/netlogon
>    guest ok = yes
>    writable = no
>    share modes = no
>
> [profiles]
>     path = /home/profiles
>     browseable = no
>     create mode = 0600
>     directory mode = 0700
>     guest ok = yes
>     read only = no
>     profile acls = yes
>     csc policy = disable
>
> [shared]
>    comment = Public Stuff
>    path = /home/shared
>    public = yes
>    writable = yes
>    force group = tucks
>    printable = no
>    write list = @tucks
>    create mode = 0660
>    directory mode = 0770
>
> [company]
>    comment = Company Directory
>    path = /home/shared/company
>    public = yes
>    writable = yes
>    force group = tucks
>    printable = no
>    write list = @tucks
>    create mode = 0660
>    directory mode = 0770
>
> [myob]
>    comment = MYOB data
>    path = /home/shared/myob
>    public = yes
>    writable = yes
>    force group = tucks
>    printable = no
>    write list = @tucks
>    create mode = 0660
>    directory mode = 0770
>
> [printers]
>    comment = All Printers
>    path = /var/spool/samba
>    browseable = no
>    guest ok = no
>    writable = no
>    printable = yes
> ----------------------------------------------------------
>
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