[Samba] rsync copy operation fails on a CIFS mount

[ve2cii at ve2cii.com]

     Hi,

    I am going to go out on a limb here.
For windows there is a timer for sharing that will disconnect the share 
after some
time. This was broken at one point and the share would disconnect even 
when data
was flowing.  I solved my issue by turning off this timer.

On 8/6/21 09:25, Rowland Penny via samba wrote:
> On Fri, 2021-08-06 at 15:06 +0200, SZIGETVÁRI János via samba wrote:
>> Hi Rowland and Nico,
>>
>> I wasn't at all saying that the problem is rsync related. I just
>> included
>> its output and the error string for context.
>> The whole thing seems to us as if something would go wrong between
>> the
>> kernel CIFS code and the remote Windows server providing the share,
>> after a
>> few hours into the copy operation.
>>
>> Unfortunately this is an appliance we are talking about, and we can't
>> easily modify subcomponents to work entirely differently than before.
>> Regarding the directory structure of the data we copy: we usually aim
>> to
>> move few or several directories every day, with each directory
>> containing
>> about 150 GB of data, with one larger file (around 100 GB in size),
>> and
>> 1000+ smaller files, with a size of below 100 MB each. Either way, we
>> far
>> from tens of thousands of files per directory.
>>
>> The source files that are being moved are not in active use. We are
>> talking
>> about an archive job for files that are not being written to any
>> longer.
>> And even on the destination side, the only purpose of the storage
>> server is
>> to work as an off-appliance storage space, so neither the host, nor
>> are
>> other clients accessing the files on the destination side, while they
>> are
>> being copied or even afterwards.
>> The archive jobs use locks to ensure that only one is running at a
>> time,
>> and execute sequentially if multiple jobs queue up.
>>
>> So all in all, I would kindly ask for tips how to troubleshoot this
>> problem, and whether a bug report should be opened for Samba or the
>> kernel
>> CIFS code, or if I should ask for help at one of the other samba-*
>> mailing
>> lists.
>>
> I seem to remember saying that rsync has its own mailing list and so
> has the CIFS protocol: http://lists.samba.org/pipermail/cifs-protocol/
>
> It looks to myself that Samba has nothing to do with your problem (I
> could be wrong). I think you need to ask on the cifs-protocol list,
> they should be able to point you in the right direction, even if it is
> back here.
>
> Rowland
>
>
>