Slow/No response - pipe error: Too many open files


OS: Debian GNU/Linux 8
block-backend: ceph
version: seafile-pro-server_6.3.10_x86-64_Ubuntu

since we added the Real-time Backup Server, we get after some hours sync the error message “pipe error: Too many open files” (seaf-server over 1024 open files)on the primary Seafile Server in the seafile.log and the server response is very very bad.
Increasing “Max open files” to 49152 removes the LogMessage but did not solve the issue over 1024 open files.

what can we do?

best regards Rainer