Rsync 3.1 is extremely slow (ext4 » ntfs)

[Kalimohan]

I am using rsync for many years for various backup scenarios. One backup goes from my KUbuntu 15.10 ext4 hard disk to a (Windos) ntfs share.

With rsync 3.0.9 from Ubuntu Precise this was a very fast and comfortable task. Since rsync version 3.1.0 everything is extremely slow. So I tried many things from removing (-a -z ...) to adding (-W --modify-window=1 --inplace ...) rsync options, but no avail. There is also no difference if the synchronization is via network or USB. With other ext4 hard disks everything is just fine, as always.

I wasted a lot of time searching, but the culprit is rsync 3.1 alone. Today I installed the old rsync version 3.0.9 from Ubuntu Precise and voilà rsync is working again.

I do not understand why you provide a broken package and why it is broken for so many years. Or does nobody else use rsync between ext4 and ntfs?

[Kalimohan (kalimohan)]

Did not work either.

So rsync to ntfs hard disks are not possible since Ubuntu 15.10 any more.
:-(

[Kalimohan (kalimohan)]

Now I have a reasonable configuration for this issue:
rsync -rvtDu --modify-window=1 --delete /from/tmp/ /to/tmp

I can live with that.
Case closed.

[Joshua Powers (powersj)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. In an effort to keep an up-to-date list of bugs to work I have reviewed this report to verify it still requires a fix and it occurs on a supported version of Ubuntu.

You appear to have found a workable rsync command line to use.

It is unfortunate that we were unable to resolve this defect in a more timely manner, however there appears to be no further action required at this time. I am therefore moving the bug to 'Incomplete'. If you disagree or have additional details, please feel free to add a comment and then change the status of the bug to 'Confirmed'.

[Launchpad Janitor (janitor)]

[Expired for rsync (Ubuntu) because there has been no activity for 60 days.]