[Samba] locking issue with solidworks

[Tony McGrew]

I have a samba share set up for 3 engineers.  The software they are using on w2k clients is solidworks.  It is a modelling program that uses sometimes hundreds of files at once, and these files have to be shared.  Occasionally the solidworks program will crash with an unhandled error.  The solidworks people tell us that it is because of how our server is handling locking.  The problem seems to be that the first engineer opens a  file with read/write access, then a second engineer will open the same file with read only access.  The first engineer will then modify and save the file, then the second engineer will crash and loose all his work since the last save We can make this happen at will.  IS there a way to get around this?

 

Here is the locking portion of my smb.conf file:

 

kernel oplocks = Yes
lock spin count = 3
lock spin time = 10
oplock break wait time = 0

 

 

fake oplocks = No
locking = Yes
oplocks = Yes
level2 oplocks = Yes
oplock contention limit = 2
posix locking = Yes
strict locking = No
share modes = Yes

Here is a portion of the log.

 

[2002/09/26 12:14:58, 0] smbd/oplock.c:oplock_break(796)
  oplock_break: receive_smb timed out after 30 seconds.
  oplock_break failed for file 0-SOLIDWORKS/LASER/84-00025-00.SLDDRW (dev = 805, inode = 1667967, file_id = 3690).
[2002/09/26 12:14:58, 0] smbd/oplock.c:oplock_break(868)
  oplock_break: client failure in oplock break in file 0-SOLIDWORKS/LASER/84-00025-00.SLDDRW
[2002/09/26 12:14:58, 0] smbd/reply.c:reply_lockingX(4489)
  reply_lockingX: Error : oplock break from client for fnum = 9933 and no oplock granted on this file (0-SOLIDWORKS/LASER/84-00025-00.SLDDRW).

 

The system is RH7.3 with samba 2.2.5 from the RPM.  ANy help will be greatly appreciated.

Tony McGrew
www.multicam.com