---
name: "locktest"
section: "1"
platform: "linux"
package: "samba"
version: "2:4.25.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/locktest"
---

# locktest(1)

Find differences in locking between two SMB servers

## NAME

locktest - Find differences in locking between two SMB servers

## SYNOPSIS

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

## DESCRIPTION

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.

## OPTIONS

- \-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.

- \-a

  Print the operations that are performed.

- \-A

  Backtrack to find minimal number of operations required to make the response to a certain call differ.

- \-O

  Enable oplocks.

- \-u

  Hide unlock fails.

- \-E

  enable exact error code checking

- \-Z

  enable the zero/zero lock

- \-R range

  set lock range

- \-B base

  set lock base

- \-M min

  set min lock length

- \-k

  Use kerberos

## VERSION

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

## SEE ALSO

Samba

## AUTHOR

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.

## NOTES

- 1\.

  Samba

  http://www.samba.org/

- 2\.

  Samba Team

  http://www.samba.org/samba/team/