Backing up to NAS with rsync

[ramack]

Last month I bought a Zyxel NAS326 (RAID 1 2x 4TB HDD) to use as a backup target for my Debian desktop and a couple of Windows laptops. From my Debian machine I mount the NAS
sudo -s mount -v -t cifs -o username=username,uid=1000,gid=1000 //192.168.1.XX/username/ /home/username/NAS326/

Then I use rsync to backup to the NAS
rsync -vartH --exclude={'.*','NAS326'} /home/username/ /home/username/NAS326/DesktopBackUp/username/

All files are being copied each time, so the date, file size, or something else isn't being compared correctly. This seems to be a somewhat common issue, but I haven't been able to find a solution yet. The closest I've found is here:
https://serverfault.com/questions/26241 ... every-time

Any ideas? Maybe mount as or with a different FS other than cifs?

[lindi]

Can you SSH to the NAS? Does the NAS have rsync?

[donald]

rsync -avzxtH

-a Archive
-v Be verbose
-z Compress files during transfer
-x Don't cross filesystem boundaries (I.E. stay within mount points)
-t Copy transfer times
-H Preserve hard links

[ramack]

Can you SSH to the NAS? Does the NAS have rsync?

I"m not near it, but I'm pretty sure I can ssh into it and yes it does have rsync.

[ramack]

rsync -avzxtH

-a Archive
-v Be verbose
-z Compress files during transfer
-x Don't cross filesystem boundaries (I.E. stay within mount points)
-t Copy transfer times
-H Preserve hard links

I'll add the x and z options, run the command and report back with the results.

Thanks to both of your for the suggestions.

[lindi]

The point is that if it has ssh and rsync you could omit cifs completely. If you run rsync against a locally mounted cifs filesystem it is going to need to download all metadata locally to do the comparison. If you use rsync with ssh it will do this on the NAS itself.

[ramack]

The point is that if it has ssh and rsync you could omit cifs completely. If you run rsync against a locally mounted cifs filesystem it is going to need to download all metadata locally to do the comparison. If you use rsync with ssh it will do this on the NAS itself.

Looks like I can only ssh into the NAS with the admin account and not a regular user despite having regular user sub-directories in /home. I'm looking into see why that is...I would have thought that any user could ssh into the NAS. I don't use ssh much, but i've been able to ssh into other Linux boxes on LANs as long as I knew the username & password which was typically my account, just on a different Linux machine on the same network.

[reinob]

Check if your NAS supports the rsync daemon (vs cifs, ssh, etc.)

Then you can use something like

Code: Select all

rsync -av /home/username/ user@server::module

(where in the server you define the "module" module as pointing to the appropriate directory).

[ramack]

Check if your NAS supports the rsync daemon (vs cifs, ssh, etc.)

Then you can use something like

Code: Select all

rsync -av /home/username/ user@server::module

(where in the server you define the "module" module as pointing to the appropriate directory).

Only root/admin can.