On Wed, Nov 17, 2021 at 04:14:23PM +0100, Baptiste Jonglez wrote: > Given this behaviour, it seems likely that rsync ends up running the > "noop_io_until_death()" function and loops there forever. > > Reverting f9bb8f76ee on top of the Debian package indeed fixes the issue > for us on this machine.
Actually, both these assertions were red herrings :/ Reverting f9bb8f76ee worked for a few backups, but now it's back to the same hanging issue. And rsync is not stuck in noop_io_until_death() as I thought: it's actually stuck trying to read some data from backuppc through the SSH connection. I have added more details in the upstream bug report: https://github.com/WayneD/rsync/issues/256 In any case, I believe it's completely unrelated to Philipp's issue with rsync taking 100% CPU. But it's definitely the same issue as the one reported by Andreas at the beginning of this bug report. Baptiste
