Qtdsync backup to a file server with rsync daemon

[Fireball]

Hi, it's nice to see that there is some progress again on Qtdsync.

Initially I used this application to backup to my external USB drives.
Now I switched to a dedicated server to backup my data and I managed to set up Qtdsync accordingly.
While the data is copied to the server there seems to be an issue with the hard-link functionality.

On the server I have an rsync daemon running. The conf file looks like this:

pid file = /var/run/rsyncd.pid
log file = /var/log/rsyncd.log
use chroot = no
uid = nobody
gid = nobody
max connections = 4
timeout = 600

[Backup]
path = /mnt/user0/Backup
comment = /Backup Verzeichnis
read only = no
list = yes

This is what I see during the run:

Backup Set Dokumente
Verbinde mit 192.168.178.123...
rsync command line:
rsync.exe
"-rltv"
"--exclude=/cygdrive"
"--exclude=/proc"
"/cygdrive/C/Users/test/AppData/Local/Temp/QtdSync_2015.03.08_23.56.09/Dokumente/"
"rsync://test@192.168.178.123/Backup/Backup_Data/Dokumente/"

C:\Users\test\Documents
Bitte warten...
rsync command line:
rsync.exe
"-rltv"
"--progress"
"--hard-links"
"--delete"
"--ignore-errors"
"--force"
"--no-whole-file"
"-z"
"--link-dest=../../2014.12.03_22.04.40/Documents"
"--exclude=/cygdrive"
"--exclude=/proc"
"/cygdrive/C/Users/test/Documents/"
"rsync://test@192.168.178.123/Backup/Backup_Data/Dokumente/2015.03.08_23.56.09/Documents"

sending incremental file list
created directory Backup_Data/Dokumente/2015.03.08_23.56.09/Documents
rsync: link "/Backup_Data/Dokumente/2015.03.08_23.56.09/Documents/desktop.ini" (in Backup) => ../../2014.12.03_22.04.40/Documents/desktop.ini failed: Function not implemented (38)
rsync: link "/Backup_Data/Dokumente/2015.03.08_23.56.09/Documents/indexfile.txt" (in Backup) => ../../2014.12.03_22.04.40/Documents/indexfile.txt failed: Function not implemented (38)

I checked content on the server and it seems there are no hard-links set.
It will always make a new copy.
What's wrong? What does "function not implemented (38)" mean?
Is the config file on the server sufficient?
The server-side file system is Reiser.

Thanks for the support!

[Fireball]

Many viewers, unfortunately no help...
I did some searching on the error "Function not implemented (38)"

I found a discussion resulting in omitting the permission settings for the rsync command.
Instead of using -a use -rltD (which is the same just without -pgo)
Unfortunately the default options of qtdsync are:
"-rltv"
"--progress"
"--hard-links"
"--delete"
"--ignore-errors"
"--force"
"--no-whole-file"
"-z"
"--link-dest=../../2014.12.03_22.04.40/Documents"
"--exclude=/cygdrive"
"--exclude=/proc"

No -a and therefore no need to omit -pgo.

Then I remembered having had some issues with times not being set.
More digging...
https://bugzilla.openvz.org/show_bug.cgi?id=798
https://bugzilla.samba.org/show_bug.cgi?id=4977

I thought I could set -rlv instead of -rltv but that cannot be changed in qtdsync.

I tried to omit the -t option using --no-times and --no-t in that advanced options. Did not help.
I also tried --size-only and also both options at once. No effect.

Any help appreciated!

[Fireball]

Another update on this.
In that server is an unprotected (not part of the array) cache drive.
This drive is also formatted with the ReiserFS.

I did a new Backup set onto this drive and all following backups will
be performed successfully with hard-links.
It seems there is a problem when writing to the user shares on the array.