I delete them using the rsync option: –delete-after
And when i rsync again the damn files appears in my drive!

Is this normal?

Thx a lot

This approach has been successful. We made a couple tweeks.

The target shares were mounted with the “noperm” option. Initially, CentOS was trying to enforce permissions in a seemly inconsistent way. By adding noperm, the Windows permissions were inherited properly from those defined for the directory tree by the NAS.

We used SSH as the rsync transport. We used the High Performance Networking version with encryption disabled. We use an encrypted VPN, so that’s redundant and performance impacting.

Thanks so much for your feedback. I’m still surprised I could find a documented solution out there. This situation can’t be the unique can it?

I’ve got two distinct file types in the shares. One is a relatively large set of small files (a couple K each) in a deep directory tree. None of these files ever gets deleted (at least not yet). The other set is fewer larger files (a few MB to a couple hundred MB)that get modified frequently.

I’ll probably run multiple clients, so that I can get more parallelism to overcome the latency, but also to attack the different file sets and different and to run them at offset intervals.

So, you’re trying to mirror two NAS devices.

You probably could do it each way. Mounting both shares on one machine via cifs and then rsyncing them would probably be the easiest.
If you’re trying to do it for backup purposes you could use the second way by making a local copy from the first NAS then rsync to the second NAS.

Guess you’d have to do it both ways and see which way is quickest and most reliable. I think the second way would probably be quicker since the data would go Server 1 > Local Copy > Server 2 without the traffic of transferring it to Server 2 whilst grabbing it from one. Effectively slowing down the whole process. Full Speed Download Sync > Local > Full Speed Upload Sync seems like it would be faster initially but the remote CIFS mounts might do better once its synced up. Try it with some smaller directories and see if my theory is correct.

I was thinking about mounting both shares via mount.cifs and rsync’ing between them. Or alternatively client/server rsync’ing between systems each with one of the two volumes mounted.

Am I crazy?

I’ve had trouble with commercial packages that can’t handle lots of files completing syncs in a short period of time. My NASes are from different vendors, so using vendor specific software is out of the question.