Reproducible Data Corruption Issue

[Volker Lendecke]

On Fri, Oct 10, 2014 at 06:11:24PM +0000, Green, Paul wrote:
> Volker Lendecke [mailto:Volker.Lendecke at sernet.de] wrote:
> > 
> > I'd call this some unexpected behaviour (bug) of the Linux cifs client
> > with Samba. My understanding of the document is that the target file is
> > only being accessed via Samba, both ftp clients come in via a Linux cifs
> > mount. If that is a misunderstanding on my side, please correct me.
> 
> You are correct.
> 
> > I believe this *should* work and not cause corruption. It would be
> > interesting to me to see the full logs and network traces, if possible
> > together with an strace -ttT of both ftp server processes.
> 
> I have updated Samba Bugzilla issue #10865 with the
> requested information. Let me know if any further
> information would be helpful.

The tcpdump logs are the stdout of tcpdump. Unfortunately, that is
missing a lot of information. If possible, can you repeat the test and
do network traces according to

https://wiki.samba.org/index.php/Capture_Packets

to get the raw traces? Also, the ftp server and the Samba server seem
to have different clocks. The strace is a bit past 12pm, the Samba
server is right before 5pm. Not super-important, but if possible, can
you coordinate both clocks?

Thanks,

Volker

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