id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc 791,"""Ignoring SIGUSR1"" log message flood",petrerodan,," I am doing automated testing of openvpn servers. for this I have openvpn client processes that are run under a controlled environment. when an error like 'TLS Error: TLS key negotiation failed' is detected in the openvpn client's stdout my script sends a SIGTERM to the process, waits a few seconds and then sends a SIGKILL if the process is still present. the problem is that the process floods stdout with a lot of ""Ignoring SIGUSR1 received during exit notification"" messages that end up filling filesystems in just a few seconds time. basically with just 2 SIGTERM signals received during 9 seconds the openvpn process ends up logging 125MB of garbage with verb=3. this happens with OpenVPN ver. 2.3.12 and a 4.8.10 kernel: bucharest-at01 tmp # grep -c 'Ignoring SIGUSR1' openvpn_20161214203536.log 1642099 bucharest-at01 tmp # stat openvpn_20161214203536.log File: 'openvpn_20161214203536.log' Size: 124800386 Blocks: 243760 IO Block: 4096 regular file Device: fe02h/65026d Inode: 30823 Links: 1 Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2016-12-14 20:35:36.323271405 +0000 Modify: 2016-12-14 20:36:45.234740589 +0000 Change: 2016-12-14 20:36:45.234740589 +0000 bucharest-at01 tmp # head -n20 openvpn_20161214203536.log Wed Dec 14 20:35:36 2016 OpenVPN 2.3.12 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [MH] [IPv6] built on Sep 29 2016 Wed Dec 14 20:35:36 2016 library versions: OpenSSL 1.0.2j 26 Sep 2016, LZO 2.08 Wed Dec 14 20:35:36 2016 Socket Buffers: R=[212992->212992] S=[212992->212992] Wed Dec 14 20:35:36 2016 UDPv4 link local: [undef] Wed Dec 14 20:35:36 2016 UDPv4 link remote: [AF_INET]CENSORED:443 Wed Dec 14 20:36:36 2016 [UNDEF] Inactivity timeout (--ping-exit), exiting Wed Dec 14 20:36:36 2016 SIGTERM received, sending exit notification to peer Wed Dec 14 20:36:36 2016 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity) Wed Dec 14 20:36:36 2016 TLS Error: TLS handshake failed Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification Wed Dec 14 20:36:36 2016 Ignoring SIGUSR1 received during exit notification bucharest-at01 tmp # tail -n1 openvpn_20161214203536.log Wed Dec 14 20:36:45 2016 Ignoring SIGUSR1 received during exit notification ",Bug / Defect,closed,major,,Generic / unclassified,OpenVPN 2.3.9 (Community Ed),Patch Queue: Merged,fixed,,