Too many open files

Each process on a computer is allowed to open a limited number of handles to files. Resilio Connect Agent needs to trace al the files in a job, especially sync jobs, and thus may exceed the limit. As a result, this error appear, valid mainly for Linux agents.

 View the current limit in the system:

ulimit -n
ulimit -Sn  //soft limit
ulimit -Hn  //hard limit

To view the current number of open files by rslgent: 

lsof -p <pid_of_agent> | wc -l 

If number of open files exceeds the system limit, you might want to increase the limits with 

sudo sysctl fs.file-max=N

and restart the agent. Not advised to set N more than 65535.

Error code SE_TOO_MANY_OPEN_FILES