[Samba] rsync copy operation fails on a CIFS mount

[Rowland Penny]

On Sun, 2021-08-01 at 17:11 +0200, SZIGETVÁRI János via samba wrote:
> Dear Members,
> 
> Do you happen to have any recommendations on where I should begin?
> 
> Best Regards,
> János
> 
> SZIGETVÁRI János <jszigetvari at gmail.com> ezt írta (időpont: 2021.
> júl. 30.,
> P, 12:52):
> 
> > Dear Members,
> > 
> > I work for a company that (among others) sells Ubuntu-based log
> > storage
> > appliances. I ran into a problem, where I'm trying to copy a large
> > amount
> > of data over to a CIFS mount from a Ubuntu 18.04 based appliance to
> > a
> > Windows 2012 R2 Storage Server, and rsync fails after 1-2-3 hours
> > into the
> > copy operation with something like:
> > rsync: failed to set times on "FILENAME.U5EgGX": No such device
> > (19)"
> > 
> > and I see a number of kernel logs just prior to that, that look
> > like this:
> > 
> > kernel: [3819786.441711] CIFS VFS: No task to wake, unknown frame
> > received! NumMids 1
> > kernel: [3819786.441717] 00000000: 6c000000 424d53fe 00000040
> > 00000000
> >  ...l.SMB at .......
> > kernel: [3819786.441718] 00000010: 00000012 00000001 00000000
> > ffffffff
> >  ................
> > kernel: [3819786.441720] 00000020: ffffffff 00000000 00000000
> > 00000000
> >  ................
> > kernel: [3819786.441721] 00000030: 00000000 00000000 00000000
> > 00000000
> >  ................
> > kernel: [3819786.441722] 00000040: 00000000
> > 
> > Now who should I turn to get to the end of this problem?
> > Should I file a bug for the Samba project? Or is it the kernel code
> > that
> > may be affected? If that is the case, who should I turn to?
> > 
> > I also tried to google around for a while, and I found the same
> > exact
> > package hexdump on the linux-cifs mailing list from 2012:
> > https://www.spinics.net/lists/linux-cifs/msg06634.html
> > 
> > In that thread the person reporting the problem failed to reproduce
> > the
> > problem a few weeks after reporting it.
> > There it was recommended to try and mount the share with SMB v1,
> > but that
> > is out of the question nowdays.
> > 
> > We tried forcing the mount to happen with vers=3 and 3.02, but it
> > made no
> > difference.
> > 
> > Best Regards,
> > János Szigetvári
> > --

I know rsync comes under the Samba banner, but it has nothing to do
with the 'Samba' packages, I suggest you try here: 
https://lists.samba.org/mailman/listinfo/rsync

Rowland