rsync: writefd_unbuffered failed to write 4092 bytes

とか出て途中で rsync が止まる件について。

[Bug 1959] writefd_unbuffered failed to write 4092 bytes phase send_file_entry broken pipe

http://lists.samba.org/archive/rsync/2006-February/014774.html

これか。
I found by limiting the bandwidth and setting a large timeout that the
problem/symptoms went away. ie I added the following switches:
--bwlimit=8192 --timeout=600
だそうだ。