The Samba copy file call flow

GongJinrong jinronggong at
Mon May 5 05:02:30 MDT 2014

Hi, Richard

   Thanks for your advice, and I will update it to a new version, with your excellent paper "Writing a Samba VFS", I wrote a VFS module, but when I debug the samba code, I found a strange thing, the close operation always is delayed about 15 seconds when I do a file copy, can the close operation be called just after writing all data immediately?

-----Original Message-----
From: samba-technical-bounces at [mailto:samba-technical-bounces at] On Behalf Of Richard Sharpe
Sent: Monday, May 05, 2014 3:47 AM
To: GongJinrong
Cc: samba-technical
Subject: Re: The Samba copy file call flow

On Sun, May 4, 2014 at 1:50 AM, GongJinrong <jinronggong at> wrote:
> Thanks Brad, my installed samba is really old, I installed it by yum 
> in CentOS 6.3, and now the yum version is updated to 3.6.9, I will 
> update it, thanks a lots for your advice^^.


Even 3.6.9 is really old, and you should try to use something more recent. The SerNet folks were making source and binary RPMs available for more recent version of 3.6, so you should probably go with those if you want to stick with a 3.6.x version, and installing their RPMs is not so hard.

I notice that the latest there is from March in 2014 which is quite recent:

However, for Samba 4 you will need to register with them, as it says

Building an RPM from their source RPM is also not that hard, especially as it seems you want to make some mods.

> -----Original Message-----
> From: samba-technical-bounces at
> [mailto:samba-technical-bounces at] On Behalf Of Brad 
> Hards
> Sent: Sunday, May 04, 2014 2:30 PM
> To: samba-technical at
> Subject: Re: The Samba copy file call flow
> On Sun, 4 May 2014 02:15:21 PM GongJinrong wrote:
>>  my samba version is 3.5.10,
> This is almost three years old. Perhaps you could choose a newer 
> version - I'd recommend the latest 4.1 release, but even 3.6.23 (if 
> you really do not want to go to Samba 4) would be better - there are 
> quite a few security fixes since
> 3.5.10 (see for 
> the release).
> I don't know the details of the VFS question you are asking though.
> Brad

Richard Sharpe

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