03-05-2010
read/write,write/write lock with smbclient fails
Hi,
We have smb client running on two of the linux boxes and smb server on another linux system. During a backup operation which uses smb, read of a file was allowed while write to the same file was going on.Also simultaneous writes to the same file were allowed.Following are the settings in the smb.conf file:
lock directory =/var/samba/lock
locking=yes
strict locking = no
oplocks=yes
level2 oplocks = no
kernel oplocks =yes
raw read= yes
raw write = yes
Could anyone please let me know that what can I do to disallow read while write is going on and also restrict simultaneous writes?
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LEARN ABOUT CENTOS
locktest
LOCKTEST(1) Test Suite LOCKTEST(1)
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/
Samba 4.0 06/17/2014 LOCKTEST(1)