[Solved] TorrentFile: failed to fix suffix on file

[oli004]

Hi

I'm having trouble syncing a folder and need a push in the right direction.

The error seems to be:

[20170310 14:40:01.541] JOURNAL[6733]: TorrentFile: failed to fix suffix on file "/project/.sync/5C0C2B65DC5EA2243F5F16A5CC5A4B1C8E355121.!sync" ("/project/mount1/sub1/sub2/test.conf") - 18

The rslsync user is the owner of the specified folder /project and its subfolders. Write tests to the specified location as the rslsync user are also successful. Starting rslsync as root also led to the same error.

The folder project on the failing machine is structured in the following way:

/project
    /mount1            Mountpoint with option --bind to /mnt/disk1 (in /etc/fstab)
       /sub1           Subfolder on /mnt/disk1
          /sub2        Subfolder on /mnt/disk1/sub1
    /folder1           local folder in /project
       /mount2         Mountpoint with option --bind to /mnt/disk2/folder1  (in /etc/fstab)
       /mount3         Mountpoint with option --bind to /mnt/disk2/folder2  (in /etc/fstab)
    /folder2           local folder in /project

As said, all the folders and also all the mountpoints are owned by rslsync (chown -R rslsync:rslsync /project)

Can anyone push me in the right direction, where to look for the error or better yet the solution?
Does anyone know this specific error?
Do I have to specify options when mounting the mountpoints via --bind? Is mounting via --bind not supported anymore by Resilio Sync?

The version of Resilio Sync is 2.4.4 (732) on Debian Stretch 9 installed via the official deb-package repository.

I'm also attaching the full excerpt from sync.log concerning this problem. As you can see, Resilio Sync is constantely trying to create the file, failes and tries again.

Thanks for your help.

Greetings from Germany

Oli4

 

[Helen]

Oli4, support received your report, it will be looked into. I'm removing your logs from public access. 

[oli004]

Hi

@Helen: Thanks, that is very considered of you.

Resilio Sync Support's answer pushed me in the right direction.

The problem seems to be, that as the partial downloads of a file are saved in .sync folder and are moved to there correct location after download completion... this file-move action is not supported cross-partition (meaning .sync folder lies on a different partition as the resulting location of the file).

A workaround seems to be 'mhddfs'.

mhddfs combines several disks/mountpoints into one folder/virtual file system. With this, moving the files from .sync folder does not seem to be a cross-partition action for Resilio Sync anymore, since apparently mhddfs (or the underlying fuse) takes care of the cross-partition action.

This is my working line in /etc/fstab:
 

mhddfs#/mnt/disk1,/mnt/disk2 /project fuse defaults,allow_other,nonempty,default_permissions 0 0

Thanks to Support for the help.

Kind regards
Oli4

Edited March 15, 2017 by oli004