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Re: rsync fails with EOPNOTSUPP on Windows share mounted over GVFS

Hi Ondrej:

First of all, thanks for your answer.



first of all, let me say that I strongly advise using "mount -t cifs"
for such kind of tasks like backups over rsync. GVfs is designed
to be used over GIO API by GNOME applications. Fuse mount point
provided by GVfs is a just limited fallback...


Yes, the more I try to use GVfs, the more I realise about its shortcomings.

The trouble is, sometimes I need to mount Windows shares without being root. And that is the only way I know 
of.

Besides, it is such a shame that GVfs is almost there, but not quite. If only you could fix its last 
remaining issues... 8-)




Back to your issue. GVfs doesn't have such cache and I am a bit confused what
you did and where you see the file (is /home/rdiez/WindowsShares symlink
to /run/user/[uid]/gvfs/?).


Yes, it is symlink'ed. I wrote the following script to automate mounting my shares and symlinking them:

https://github.com/rdiez/Tools/blob/master/MountWindowsShares/mount-windows-shares-gvfs.sh



It might be possible that the fuse daemon crashed and rsync write something
in /run/user/[UID]/gvfs/smb... in the meantime. So, you can see some file
written by rsync in fuse mountpoint, but the file doesn't exist in smb share... 



OK, thanks for the hint. I'll take a look the next time it happens.

How would I check whether the daemon has crashed? Is that a user-space application too? What is it called? I 
am using Kubuntu LTS 16.04.2, but I also have a similar Xubuntu system. Sometimes I get a crash dialog about 
a user-space application that just crashed, but I am not sure whether I would get such a notification from a 
system service.

I guess that, if the daemon crashes, it gets restarted automatically. Is it possible to write something to 
/run/user/[UID]/gvfs/smb while the daemon is down? Would it land on the local filesystem then? I just tried 
to write there without any mounted network shares, but my user account does not have write permissions to the 
root /run/user/[UID]/gvfs directory.


Is there a way to turn on debug/trace logging on the GVfs daemon, to see what is going on?


Regards,
  rdiez
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