it stopped full backup multiple times. This time it succeeded, One difference, I have ran the full backup script again immediately after the full backup failure happened after running for almost 20 Hours (2026-06-19 10:49:12.739 P00 ERROR: [101]: raised from remote-0 ssh protocol on '10.140.0.202': NULL result required to complete request) . After this time stamp I scheduled the full backup again on 2026-06-19 11:19 Hrs and it completed the next day 2026-06-20 05:20 Hrs. (~= 18 Hrs).
I assume the full backup continues from the last point from where it stopped , not afresh when you reschedule the full backup again ?
As suggested, add the ServerAliveInterval 60 ServerAliveCountMax 3 vars in sshd_config next time and observe the difference.
Thank you,
Krshane.
On Sat, Jun 20, 2026 at 8:22 PM Greg Sabino Mullane <htamfids@gmail.com> wrote:
Smells like a timeout of some sort to me. Could be a firewall dropping an "idle" connection. How long does the diff backup take to complete? How long from when you kick off the full backup to the time it errors out? Is that timeout consistent? See if you have ServerAliveInterval set in your ssh config, and if not, consider adding it (and related vars).
