locktest man page

locktest — Find differences in locking between two SMB servers


locktest {//server1/share1} {//server2/share2} [-U user%pass] [-U user%pass] [-s seed] [-o numops] [-a] [-O] [-E] [-Z] [-R range] [-B base] [-M min]


locktest is a utility for detecting differences in behaviour in locking between SMB servers. It will run a random set of locking operations against //server1/share1 and then the same random set against //server2/share2 and display the differences in the responses it gets.

This utility is used by the Samba team to find differences in behaviour between Samba and Windows servers.


-U user%pass
Specify the user and password to use when logging on on the shares. This parameter can be specified twice (once for the first server, once for the second).
-s seed
Seed the random number generator with the specified value.
-o numops
Set the number of operations to perform.
Print the operations that are performed.
Backtrack to find minimal number of operations required to make the response to a certain call differ.
Enable oplocks.
Hide unlock fails.
enable exact error code checking
enable the zero/zero lock
-R range
set lock range
-B base
set lock base
-M min
set min lock length
Use kerberos


This man page is correct for version 4.0 of the Samba suite.

See Also



This utility is part of the Samba[1] suite, which is developed by the global Samba Team[2].

locktest was written by Andrew Tridgell.

This manpage was written by Jelmer Vernooij.





Samba Team


01/12/2017 Samba 4.0 Test Suite