Rsync timeout RN316 6.10.3

[olest]

After some of the later firmware updates I started getting timeout errors when doing rsync backup from my readynas to remote NAS (Synology).

rsync: [sender] write error: Connection reset by peer (104)
rsync error: error in socket IO (code 10) at io.c(829) [sender=3.1.3]

If I enable compression it only fails sometimes.

It only happens on jobs with many or large files.

I see nowhere to set rsync timeout value.

[StephenB]

Do you see the same error if you run rsync on the Synology instead of as a ReadyNAS backup job?

Anything change on the synology over this timeframe?

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@olest wrote:

I see nowhere to set rsync timeout value.

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There isn't a setting exposed for it.  But a connection reset isn't the same as a timeout.  Generally the reset error means the connection has actually been broken.  

Are the two NAS on the same network?

[olest]

I havn't tried to run the job reverse from the Synology.

The backup is done over a 100Mbit IPSEC VPN connection.

Tried to ping from the Readynas to the Synology while doing rsync from Readynas and I get 0% packet loss (0 packets lost) but the backup still fails.

[StephenB]

I'd look at the full logs on both systems, and also try running the rsync on the synology and see if it behaves the same way.

[olest]

The Synology does not support backup FROM a rsync server.

Where do I find the logs?

[StephenB]

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@olest wrote:

The Synology does not support backup FROM a rsync server.

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I think you could run it using ssh.  This is intended as a test.

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@olest wrote:

Where do I find the logs?

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Download the log zip file from the logs page.

[olest]

Trying to do rsync the reverse way from Synology using Synology Active Backup for Business - I'll update with the result later.

Does Readynas Rsync use BLOCK LEVEL transfer for each file or does it transfer the whole file if it has changed?

[StephenB]

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@olest wrote:

Does Readynas Rsync use BLOCK LEVEL transfer for each file or does it transfer the whole file if it has changed?

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The backup jobs are transfering the entire file when it changes.  The rsync daemon should support the block level transfers, so you should be able to run that on the synology (using the NAS as a remote source or destination).