[ERROR] Failed to write to mysql.slow_log

[ERROR] Failed to write to mysql.slow_log

I have a mysql server5.6.Always output error information to the error log file. [ERROR] Failed to write to mysql.slow_log.I have no problem with disk and memory and os,Is there any other reason?

Hi csxuedn , this forum is for Percona Monitoring and Management, I believe you’ll find more readers if you could re-post in MySQL and Percona Server. Thanks