[Samba] locking with samba and getting read-only to work with libreoffice

[Dale]

On 2/8/21 10:04 AM, Rowland penny via samba wrote:
> On 08/02/2021 15:35, Jelle de Jong via samba wrote:
>> Hello everybody,
>>
>> I been experiencing some challenges with samba and locking with 
>> LibreOffice.
>>
>> The expected behaviour is that userA can open an file with 
>> LibreOffice (that also creates its own lockfile) and that userB can 
>> open the same file gets a warning that the file is in use (this is 
>> working) then gets the option to read-only of make a copy, but this 
>> does not work. The file becomes impossible to read to other users 
>> when it gets opened. I do not know why or how....
>>
>> The file manger is also creating errors when opening a file with 
>> LibreOffice but try to make a copy from an other system on the share.
>>
>> I get error like:
>>
>> Data could not be read from file.
>> Error splicing file: Permission denied
>>
>> smbstatus:
>> 1716515      1376000004  DENY_NONE  0x12019f    RDWR       NONE 
>> /srv/storage/shares   Iedereen/shared_file_test_01.docx   Mon Feb 8 
>> 16:28:28 2021
>>
>> I tried some of the options bellow but no luck...
>>
>> #       oplocks = no
>> #       level2 oplocks = no
>>         veto oplock files = /.~lock*/
>>
>> #       oplocks = no
>> #       locking = no
>> #       strict locking = no
>> #       blocking locks = no
>> #       kernel oplocks = no
>>         posix locking = no
>>
>> # testparm --version
>> Version 4.12.3
>>
>> Can somebody help me out? Can you get LibreOffice read-only access 
>> working on opened files on your samba shares?
>>
>> Kind regards,
>>
>> Jelle de Jong
>>
>
> As far as I am aware oplocks should work, so it could be a LibreOffice 
> problem, but it is hard to say because you have done what a lot of 
> people do, they give us very little to go on. You have given us 
> fragments of your smb.conf, please post your entire smb.conf , it may 
> help.
>
> Rowland

I had success with

     veto oplock files = /*.docx/*.xlsx/

for as many file extension types as you need.  It was especially useful 
with Access database files where many users were saving records 
concurrently.

Dale