As @spzm seems to have a reproduction in a very specific case and was asking for next steps, I suggest engagement of rsync upstream:
https://pserver.samba.org/rsync/lists.html The level of deep rsync expertise necessary to turn this problem into something actionable is likely watching over there. If a thread is started, updating this bug with a link to the thread would be helpful. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1528921 Title: rsync hangs on select(5, [], [4], [], {60, 0} To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rsync/+bug/1528921/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs